Studies on the use of essential oils for the control of Sitophilus Zeamais (Motschulsky) (Coleoptera; Curculionidae): a pest of stored maize grains
- Odeyemi, Oluwakemi Oluwaseyi
- Authors: Odeyemi, Oluwakemi Oluwaseyi
- Date: 2008
- Subjects: Curculionidae , Essences and essential oils , Corn -- Diseases and pests -- South Africa , Biological pest control agents -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD (Botany)
- Identifier: vital:11301 , http://hdl.handle.net/10353/168 , Curculionidae , Essences and essential oils , Corn -- Diseases and pests -- South Africa , Biological pest control agents -- South Africa
- Description: The common maize weevil, Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae), a well known pest of stored-maize grain in most parts of the world, was identified as one of the major constraints of harvested maize grains in the Eastern Cape Province, South Africa. The use of plants or their products is one of the recent methods being investigated for insect pest control worldwide. Therefore, the main aim of the present study was to identify available plants in the Eastern Cape that could be used to combat the problem of Sitophilus zeamais in stored-maize grains. For the realization of the aims of this research, the following studies were carried out; a preliminary survey was conducted to obtain baseline information on the farmers’ knowledge and experience of indigenous insect pest control methods in the Eastern Cape. Also, studies on the insecticidal potential of the essential oils of some plants were investigated against the maize weevil. The quality parameters of maize grains treated with the essential oils was also studied and, using a rat model, the toxicity of the essential oils was investigated. The outcome from this study revealed that there is awareness amongst the farmers in the Eastern Cape on the use of plants or their products to control insect pests. Unfortunately, such methods are currently being neglected and the knowledge of their application was found to be eroding. Among the various essential oils screened were those from Mentha longifolia L. and Tagetes minuta L. which evoked an appreciable level of contact, fumigant and repellent toxicity on the maize weevil. Further work done to determine the effects of the oils on maize stored over a period of three months revealed that the two oils had no adverse effect on the proximate compositions and some quality parameters of the stored maize. However, the toxicological study conducted on rats showed that the oils at tested concentrations exhibited some level of toxicity. It is, therefore, suggested that the essential oils of M. longifolia and T. minuta should not be used to treat maize grains intended for human consumption.
- Full Text:
- Date Issued: 2008
- Authors: Odeyemi, Oluwakemi Oluwaseyi
- Date: 2008
- Subjects: Curculionidae , Essences and essential oils , Corn -- Diseases and pests -- South Africa , Biological pest control agents -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD (Botany)
- Identifier: vital:11301 , http://hdl.handle.net/10353/168 , Curculionidae , Essences and essential oils , Corn -- Diseases and pests -- South Africa , Biological pest control agents -- South Africa
- Description: The common maize weevil, Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae), a well known pest of stored-maize grain in most parts of the world, was identified as one of the major constraints of harvested maize grains in the Eastern Cape Province, South Africa. The use of plants or their products is one of the recent methods being investigated for insect pest control worldwide. Therefore, the main aim of the present study was to identify available plants in the Eastern Cape that could be used to combat the problem of Sitophilus zeamais in stored-maize grains. For the realization of the aims of this research, the following studies were carried out; a preliminary survey was conducted to obtain baseline information on the farmers’ knowledge and experience of indigenous insect pest control methods in the Eastern Cape. Also, studies on the insecticidal potential of the essential oils of some plants were investigated against the maize weevil. The quality parameters of maize grains treated with the essential oils was also studied and, using a rat model, the toxicity of the essential oils was investigated. The outcome from this study revealed that there is awareness amongst the farmers in the Eastern Cape on the use of plants or their products to control insect pests. Unfortunately, such methods are currently being neglected and the knowledge of their application was found to be eroding. Among the various essential oils screened were those from Mentha longifolia L. and Tagetes minuta L. which evoked an appreciable level of contact, fumigant and repellent toxicity on the maize weevil. Further work done to determine the effects of the oils on maize stored over a period of three months revealed that the two oils had no adverse effect on the proximate compositions and some quality parameters of the stored maize. However, the toxicological study conducted on rats showed that the oils at tested concentrations exhibited some level of toxicity. It is, therefore, suggested that the essential oils of M. longifolia and T. minuta should not be used to treat maize grains intended for human consumption.
- Full Text:
- Date Issued: 2008
Studies towards the synthesis of novel, coumarin-based HIV-1 protease inhibitors
- Authors: Rashamuse, Thompho Jason
- Date: 2008
- Subjects: Coumarins , Protease Inhibitors , HIV infections -- Treatment , HIV (Viruses) , AIDS (Disease) -- Treatment , Heterocyclic compounds -- Derivatives
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4359 , http://hdl.handle.net/10962/d1005024 , Coumarins , Protease Inhibitors , HIV infections -- Treatment , HIV (Viruses) , AIDS (Disease) -- Treatment , Heterocyclic compounds -- Derivatives
- Description: A series of the Baylis-Hillman adducts have been obtained by reacting protected O-benzylated and unprotected substituted salicylaldehydes with methyl acrylate or tertbutyl acrylate, respectively, using DABCO as catalyst. Treatment of the Baylis-Hillman adducts with HCl in a mixture of acetic acid and acetic anhydride afforded the corresponding 3-(chloromethyl)coumarin derivatives with yields of up to 94%. Similar use of HI afforded the corresponding 3-(iodomethyl)coumarins but, depending on the reaction time, the reduced 3-methyl analogues could also be obtained. Arbuzov reactions of the 3-(halomethyl)coumarin derivatives have been undertaken to afford 4-phosphorylated and 1’-phosphorylated derivatives, regioselectivity being dependent on the halide-leaving group. The 3-(chloromethyl)coumarin derivatives have been subjected to nucleophilic (SN) attack by benzylamine to give the corresponding 3- [(benzylamino)methyl]coumarin derivatives in yields of up to 74%. Further treatment of the 3-[(benzylamino)methyl]coumarin derivatives with chloroacetyl chloride afforded the chloroacetamide derivatives, which exhibit hindered rotation about the amine C(O)-N bond. The acetamide derivatives have also been subjected to Arbuzov reaction conditions to afford the phosphorylated derivatives in yields of up to 86%. In a preliminary modelling study, hydrolysed analogues of the synthesized phosphorylated derivatives have been docked into the active site of the HIV-1 protease enzyme using the Cerius-2 Ligandfit software module to provide an insight into potential receptor-ligand hydrogen bonding interactions.
- Full Text:
- Date Issued: 2008
- Authors: Rashamuse, Thompho Jason
- Date: 2008
- Subjects: Coumarins , Protease Inhibitors , HIV infections -- Treatment , HIV (Viruses) , AIDS (Disease) -- Treatment , Heterocyclic compounds -- Derivatives
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4359 , http://hdl.handle.net/10962/d1005024 , Coumarins , Protease Inhibitors , HIV infections -- Treatment , HIV (Viruses) , AIDS (Disease) -- Treatment , Heterocyclic compounds -- Derivatives
- Description: A series of the Baylis-Hillman adducts have been obtained by reacting protected O-benzylated and unprotected substituted salicylaldehydes with methyl acrylate or tertbutyl acrylate, respectively, using DABCO as catalyst. Treatment of the Baylis-Hillman adducts with HCl in a mixture of acetic acid and acetic anhydride afforded the corresponding 3-(chloromethyl)coumarin derivatives with yields of up to 94%. Similar use of HI afforded the corresponding 3-(iodomethyl)coumarins but, depending on the reaction time, the reduced 3-methyl analogues could also be obtained. Arbuzov reactions of the 3-(halomethyl)coumarin derivatives have been undertaken to afford 4-phosphorylated and 1’-phosphorylated derivatives, regioselectivity being dependent on the halide-leaving group. The 3-(chloromethyl)coumarin derivatives have been subjected to nucleophilic (SN) attack by benzylamine to give the corresponding 3- [(benzylamino)methyl]coumarin derivatives in yields of up to 74%. Further treatment of the 3-[(benzylamino)methyl]coumarin derivatives with chloroacetyl chloride afforded the chloroacetamide derivatives, which exhibit hindered rotation about the amine C(O)-N bond. The acetamide derivatives have also been subjected to Arbuzov reaction conditions to afford the phosphorylated derivatives in yields of up to 86%. In a preliminary modelling study, hydrolysed analogues of the synthesized phosphorylated derivatives have been docked into the active site of the HIV-1 protease enzyme using the Cerius-2 Ligandfit software module to provide an insight into potential receptor-ligand hydrogen bonding interactions.
- Full Text:
- Date Issued: 2008
Suicide ideation among police members in the Eastern Cape
- De Bruin, Carmelitia Elmarie
- Authors: De Bruin, Carmelitia Elmarie
- Date: 2008
- Subjects: Police -- South Africa -- Eastern Cape , Suicide , Suicide -- Psychological aspects , Police -- South Africa -- Job stress
- Language: English
- Type: Thesis , Masters , M Soc Sc (C Psy)
- Identifier: vital:11852 , http://hdl.handle.net/10353/146 , Police -- South Africa -- Eastern Cape , Suicide , Suicide -- Psychological aspects , Police -- South Africa -- Job stress
- Description: Suicide, the endpoint of the continuum that begins with suicide ideation, is known to be an important precursor of attempted suicides. The purpose of this study was to determine the level of suicide ideation of police members and to determine the differences between suicide ideation of various demographic variables, in particular, the gender, rank and race groups of police members. The convenience sample (N = 111) was drawn from police stations in the Nelson Mandela Metropole in the Eastern Cape Province. The Adult Suicide Ideation Questionnaire (ASIQ) and a Biographical Questionnaire were administered. The results indicated that 1.4 % of the sample showed significant levels of suicidal ideation scoring a high score above 31 (i.e., above the 97th percentile by ASIQ). The T-test, One-way (ANOVA) and the Pearson Chi-Square analysis showed no significant differences between suicide ideation and the demographic variables based on the police station, age, gender, race, rank, years of service, years of current position, educational qualifications, marital status, presence of medical conditions, number of alcoholic drinks consumed per week, smoking behaviour and exercise behaviour. However, participants with previous suicide attempts had significant high scores on ASIQ.
- Full Text:
- Date Issued: 2008
- Authors: De Bruin, Carmelitia Elmarie
- Date: 2008
- Subjects: Police -- South Africa -- Eastern Cape , Suicide , Suicide -- Psychological aspects , Police -- South Africa -- Job stress
- Language: English
- Type: Thesis , Masters , M Soc Sc (C Psy)
- Identifier: vital:11852 , http://hdl.handle.net/10353/146 , Police -- South Africa -- Eastern Cape , Suicide , Suicide -- Psychological aspects , Police -- South Africa -- Job stress
- Description: Suicide, the endpoint of the continuum that begins with suicide ideation, is known to be an important precursor of attempted suicides. The purpose of this study was to determine the level of suicide ideation of police members and to determine the differences between suicide ideation of various demographic variables, in particular, the gender, rank and race groups of police members. The convenience sample (N = 111) was drawn from police stations in the Nelson Mandela Metropole in the Eastern Cape Province. The Adult Suicide Ideation Questionnaire (ASIQ) and a Biographical Questionnaire were administered. The results indicated that 1.4 % of the sample showed significant levels of suicidal ideation scoring a high score above 31 (i.e., above the 97th percentile by ASIQ). The T-test, One-way (ANOVA) and the Pearson Chi-Square analysis showed no significant differences between suicide ideation and the demographic variables based on the police station, age, gender, race, rank, years of service, years of current position, educational qualifications, marital status, presence of medical conditions, number of alcoholic drinks consumed per week, smoking behaviour and exercise behaviour. However, participants with previous suicide attempts had significant high scores on ASIQ.
- Full Text:
- Date Issued: 2008
Synthesis, photochemical and photophysical properties of gallium and indium phthalocyanine derivatives
- Authors: Chauke, Vongani Portia
- Date: 2008
- Subjects: Phthalocyanines , Photochemotherapy , Electrochemistry , Gallium , Indium
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4375 , http://hdl.handle.net/10962/d1005040 , Phthalocyanines , Photochemotherapy , Electrochemistry , Gallium , Indium
- Description: The syntheses of octasubstituted and unsusbstitituted Gallium(III) chloride and indium(III) chloride phthalocyanines (GaPc and InPc), their photophysical, photochemical and nonlinear optical parameters are hereby presented. The photocatalytic oxidation of 1-hexene using the synthesized GaPc and InPc complexes as well as electrochemical characterization is also presented in this thesis. Fluorescence quantum yields do not vary much among the four Ga complexes, except for complex 21c; therefore it was concluded that the effect of substituents is not significant among them. Solvents however, had an effect on the results. Lower Φ[subscript F] values were obtained in low viscosity solvents like toluene, relative to highly viscous solvents, such as DMSO. The triplet quantum yields were found to be lower in DMSO than in DMF and toluene. The rate constants for fluorescence, intersystem crossing and internal conversion as well as fluorescence and triplet lifetimes are reported. Photodegradation and singlet oxygen quantum yields have also been reported. There was no clear correlation between the latter parameters. It was however established that the four gallium MPcs were stable, within the allowed stability range for phthalocyanines. High quantum yields of triplet state (Φ[subscript T] ranging from 0.70 to 0.91 in dimethysulfoxide, DMSO) and singlet oxygen generation (Φ[subscript greek capital letter delta], ranging from 0.61 to 0.79 in DMSO) were obtained. Short triplet lifetimes 50 to 60 μs were obtained in DMSO). Calculated non-linear parameters of these complexes are compared with those of the corresponding GaPc derivatives and tetrasubstituted GaPc and InPc complexes. The optical limiting threshold intensity (I[subscript lim]) values for the InPc and GaPc derivatives were calculated and compared with those of corresponding tetrasubstituted InPc and GaPc complexes. The octasubstituted were found to be better optical limiters. Photocatalytic oxidation of 1-hexene by GaPc (21a-c) and InPc (22a-c) derivatives is also presented. The photocatalytic oxidation products for 1-hexene were 1,2- epoxyhexane and 1-hexen-3-ol. The % conversion values of 1-hexene and % selectivity of 1,2-epoxyhexane were generally higher for InPc derivatives. Even though InPc derivatives showed better photocatalytic results than GaPc derivatives, the former were less stable relative to the latter. Both type I and type II mechanism were implicated in the photocatalysis mechanism.
- Full Text:
- Date Issued: 2008
- Authors: Chauke, Vongani Portia
- Date: 2008
- Subjects: Phthalocyanines , Photochemotherapy , Electrochemistry , Gallium , Indium
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4375 , http://hdl.handle.net/10962/d1005040 , Phthalocyanines , Photochemotherapy , Electrochemistry , Gallium , Indium
- Description: The syntheses of octasubstituted and unsusbstitituted Gallium(III) chloride and indium(III) chloride phthalocyanines (GaPc and InPc), their photophysical, photochemical and nonlinear optical parameters are hereby presented. The photocatalytic oxidation of 1-hexene using the synthesized GaPc and InPc complexes as well as electrochemical characterization is also presented in this thesis. Fluorescence quantum yields do not vary much among the four Ga complexes, except for complex 21c; therefore it was concluded that the effect of substituents is not significant among them. Solvents however, had an effect on the results. Lower Φ[subscript F] values were obtained in low viscosity solvents like toluene, relative to highly viscous solvents, such as DMSO. The triplet quantum yields were found to be lower in DMSO than in DMF and toluene. The rate constants for fluorescence, intersystem crossing and internal conversion as well as fluorescence and triplet lifetimes are reported. Photodegradation and singlet oxygen quantum yields have also been reported. There was no clear correlation between the latter parameters. It was however established that the four gallium MPcs were stable, within the allowed stability range for phthalocyanines. High quantum yields of triplet state (Φ[subscript T] ranging from 0.70 to 0.91 in dimethysulfoxide, DMSO) and singlet oxygen generation (Φ[subscript greek capital letter delta], ranging from 0.61 to 0.79 in DMSO) were obtained. Short triplet lifetimes 50 to 60 μs were obtained in DMSO). Calculated non-linear parameters of these complexes are compared with those of the corresponding GaPc derivatives and tetrasubstituted GaPc and InPc complexes. The optical limiting threshold intensity (I[subscript lim]) values for the InPc and GaPc derivatives were calculated and compared with those of corresponding tetrasubstituted InPc and GaPc complexes. The octasubstituted were found to be better optical limiters. Photocatalytic oxidation of 1-hexene by GaPc (21a-c) and InPc (22a-c) derivatives is also presented. The photocatalytic oxidation products for 1-hexene were 1,2- epoxyhexane and 1-hexen-3-ol. The % conversion values of 1-hexene and % selectivity of 1,2-epoxyhexane were generally higher for InPc derivatives. Even though InPc derivatives showed better photocatalytic results than GaPc derivatives, the former were less stable relative to the latter. Both type I and type II mechanism were implicated in the photocatalysis mechanism.
- Full Text:
- Date Issued: 2008
Synthesis, photophysics and electrochemical study of tin macrocycles
- Authors: Khene, Mielie Samson
- Date: 2008
- Subjects: Electrochemistry , Photochemistry , Phthalocyanines , Macrocyclic compounds , Spectrum analysis
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4376 , http://hdl.handle.net/10962/d1005041 , Electrochemistry , Photochemistry , Phthalocyanines , Macrocyclic compounds , Spectrum analysis
- Description: Three non-peripherally substituted tin(IV) macrocylic compounds, octahexylphthalocyaninato dichlorotin(IV) (35a), octahexyltetrabenzo-5,10,15-triazaporphyrinato dichlorotin(IV) (35b) and octadecylphthalocyaninato dichlorotin(IV) (35c) were synthesized and their photophysical and electrochemical behaviour studied. Complex (35b), containing a CH group in place of one of the aza nitrogen atom of the phthalocyanine core, shows a split Q band due to its lower symmetry. The triplet state quantum yields were found to be lower than would be expected on the basis of the heavy atom effect of tin as the central metal for phthalocyanine derivatives (35a and 35c). In contrast, (35b) shows a triplet quantum yield ΦT = 0.78. The triplet state lifetimes were solvent dependent, and were higher in THF than in toluene. Cyclic voltammetry and spectroelectrochemistry of the complexes revealed only ring based redox processes. This thesis also reports on the microwave syntheses of tetrasulphonated tin phthalocyanine and tetrasulphonated tin α,β,γ-tetrabenzcorrole. The latter was only formed at low ratios (< 1:8) of 4-sulfophthalic acid to urea. Both complexes are aggregated in aqueous media, but can be partly or fully disaggregated by the addition of Triton X-100. The SnTSTBC complex has lower triplet life times and yields, while binding constant and quenching (of bovine serum albumin) constant are lower for SnTSTBC, compared to SnTSPc. Finally Non-peripherally (α) tetra- (40) and octa-(38a) substituted dodecyl-mercapto tin(IV) phthalocyanines where synthesized and the electrochemical behavior studied. Cyclic voltammetry and spectroelectrochemistry show ring-based reductions for (38a) and (40); the former shows two ring oxidations, while the latter shows only one ring based oxidation. The adsorption kinetics of (38a) and (40) on a gold electrode have been investigated by electrochemical impedance spectroscopy (EIS). The equilibrium constant (K) for the adsorption and the Gibbs free energy ΔG(ads) of the self-assembled monolayer (SAMs) were evaluated based on the Frumkin isotherm. The interaction factor between adsorbate –adsorbate molecules is also discussed.
- Full Text:
- Date Issued: 2008
- Authors: Khene, Mielie Samson
- Date: 2008
- Subjects: Electrochemistry , Photochemistry , Phthalocyanines , Macrocyclic compounds , Spectrum analysis
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4376 , http://hdl.handle.net/10962/d1005041 , Electrochemistry , Photochemistry , Phthalocyanines , Macrocyclic compounds , Spectrum analysis
- Description: Three non-peripherally substituted tin(IV) macrocylic compounds, octahexylphthalocyaninato dichlorotin(IV) (35a), octahexyltetrabenzo-5,10,15-triazaporphyrinato dichlorotin(IV) (35b) and octadecylphthalocyaninato dichlorotin(IV) (35c) were synthesized and their photophysical and electrochemical behaviour studied. Complex (35b), containing a CH group in place of one of the aza nitrogen atom of the phthalocyanine core, shows a split Q band due to its lower symmetry. The triplet state quantum yields were found to be lower than would be expected on the basis of the heavy atom effect of tin as the central metal for phthalocyanine derivatives (35a and 35c). In contrast, (35b) shows a triplet quantum yield ΦT = 0.78. The triplet state lifetimes were solvent dependent, and were higher in THF than in toluene. Cyclic voltammetry and spectroelectrochemistry of the complexes revealed only ring based redox processes. This thesis also reports on the microwave syntheses of tetrasulphonated tin phthalocyanine and tetrasulphonated tin α,β,γ-tetrabenzcorrole. The latter was only formed at low ratios (< 1:8) of 4-sulfophthalic acid to urea. Both complexes are aggregated in aqueous media, but can be partly or fully disaggregated by the addition of Triton X-100. The SnTSTBC complex has lower triplet life times and yields, while binding constant and quenching (of bovine serum albumin) constant are lower for SnTSTBC, compared to SnTSPc. Finally Non-peripherally (α) tetra- (40) and octa-(38a) substituted dodecyl-mercapto tin(IV) phthalocyanines where synthesized and the electrochemical behavior studied. Cyclic voltammetry and spectroelectrochemistry show ring-based reductions for (38a) and (40); the former shows two ring oxidations, while the latter shows only one ring based oxidation. The adsorption kinetics of (38a) and (40) on a gold electrode have been investigated by electrochemical impedance spectroscopy (EIS). The equilibrium constant (K) for the adsorption and the Gibbs free energy ΔG(ads) of the self-assembled monolayer (SAMs) were evaluated based on the Frumkin isotherm. The interaction factor between adsorbate –adsorbate molecules is also discussed.
- Full Text:
- Date Issued: 2008
Synthetic, spectrometric and computer modelling studies of novel ATP analogues
- Gxoyiya, Babalwa Siliziwe Blossom
- Authors: Gxoyiya, Babalwa Siliziwe Blossom
- Date: 2008
- Subjects: Spectrum analysis Tuberculosis -- Treatment Chemotherapy Adenosine triphosphate Adenosine triphosphate -- Synthesis Adenosine triphosphate -- Computer simulation Adenosine triphosphate -- Spectrometric imaging Glutamine synthetase Tuberculosis -- Chemotherapy
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4386 , http://hdl.handle.net/10962/d1005051
- Description: This study has been concerned with the design and synthesis of A TP analogues with the potential to act as inhibitors of glutamine synthetase - a novel target for therapeutic intervention in the treatment of tuberculosis. Using a structural -analogy approach, various 3-indolylalkanoic acid, benzimidazole and pyrazolo[3,4-dJpyrimidine derivatives have been prepared and characterized. Alkylation of the heterocyclic bases using 4-(bromomethyl)-2,2-dimethyl-1 ,3-d ioxolane, 2-(bromomethoxy)ethyl acetate and 2-(chloroethoxy)ethanol in the presence of either NaH or BulOK afforded the corresponding N-alkylated derivatives of benzimidazole and 4-aminopyrazolo[3,4-dJpyrimidine (4-APP). Similar reactions with 3-indo lylalkanoic esters resulted in O-alkyl cleavage with the formation of new esters. Alkylation of benzimidazole with allyl bromide, 4-bromobutene and 2-methylbut-2-ene has also been shown to afford the corresponding l-alkenylbenzimidazoles in moderate to excellent yield (43-96%). Subsequent oxidation of these products using CTAP, gave the dihydroxy derivatives in poor to good yields (26-77%). Phosphorylation of various hydroxy derivatives of benzimidazole and 4-APP has been achieved using diethyl chlorophosphate to afford the corresponding monophosphate and 1,2-diphosphate esters. Glycosylation of each of the heterocyclic bases has been successfully achieved using 1,2,3,4,6-penta-O-acetyl-D-glucopyranose and SnCl4 in acetonitri le, while methanolysis of the resulting tetraacetates, using methanolic NaOMe, afforded the hydroxy derivatives in good yield (50-70%). Various 1- and 2-dimensional NMR spectroscopic methods (e.g., IH, 13C, lip, COSY, HSQC and HMBC) have been used to confirm the structures of the synthesized A IP analogues. The application of NMR prediction programmes has been explored, permitting assessment of their agreement with the experimental data and confirmation of assigned structures. High-resolution electron impact (EI) mass spectrometric data have been used to explore the mass fragmentation pathways exhibited by selected derivatives, and certain common fragmentations have been identified. Molecular modelling of selected products as potential glutamine synthetase ligands has been performed on the Accelrys Cerius2 platform, and interactive receptor-ligand docking studies have been conducted using the Ligand-Fit module. These studies have revealed possible hydrogen-boding interactions between the selected analogues and various amino acid residues in the glutamine synthetase active site.
- Full Text:
- Date Issued: 2008
- Authors: Gxoyiya, Babalwa Siliziwe Blossom
- Date: 2008
- Subjects: Spectrum analysis Tuberculosis -- Treatment Chemotherapy Adenosine triphosphate Adenosine triphosphate -- Synthesis Adenosine triphosphate -- Computer simulation Adenosine triphosphate -- Spectrometric imaging Glutamine synthetase Tuberculosis -- Chemotherapy
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4386 , http://hdl.handle.net/10962/d1005051
- Description: This study has been concerned with the design and synthesis of A TP analogues with the potential to act as inhibitors of glutamine synthetase - a novel target for therapeutic intervention in the treatment of tuberculosis. Using a structural -analogy approach, various 3-indolylalkanoic acid, benzimidazole and pyrazolo[3,4-dJpyrimidine derivatives have been prepared and characterized. Alkylation of the heterocyclic bases using 4-(bromomethyl)-2,2-dimethyl-1 ,3-d ioxolane, 2-(bromomethoxy)ethyl acetate and 2-(chloroethoxy)ethanol in the presence of either NaH or BulOK afforded the corresponding N-alkylated derivatives of benzimidazole and 4-aminopyrazolo[3,4-dJpyrimidine (4-APP). Similar reactions with 3-indo lylalkanoic esters resulted in O-alkyl cleavage with the formation of new esters. Alkylation of benzimidazole with allyl bromide, 4-bromobutene and 2-methylbut-2-ene has also been shown to afford the corresponding l-alkenylbenzimidazoles in moderate to excellent yield (43-96%). Subsequent oxidation of these products using CTAP, gave the dihydroxy derivatives in poor to good yields (26-77%). Phosphorylation of various hydroxy derivatives of benzimidazole and 4-APP has been achieved using diethyl chlorophosphate to afford the corresponding monophosphate and 1,2-diphosphate esters. Glycosylation of each of the heterocyclic bases has been successfully achieved using 1,2,3,4,6-penta-O-acetyl-D-glucopyranose and SnCl4 in acetonitri le, while methanolysis of the resulting tetraacetates, using methanolic NaOMe, afforded the hydroxy derivatives in good yield (50-70%). Various 1- and 2-dimensional NMR spectroscopic methods (e.g., IH, 13C, lip, COSY, HSQC and HMBC) have been used to confirm the structures of the synthesized A IP analogues. The application of NMR prediction programmes has been explored, permitting assessment of their agreement with the experimental data and confirmation of assigned structures. High-resolution electron impact (EI) mass spectrometric data have been used to explore the mass fragmentation pathways exhibited by selected derivatives, and certain common fragmentations have been identified. Molecular modelling of selected products as potential glutamine synthetase ligands has been performed on the Accelrys Cerius2 platform, and interactive receptor-ligand docking studies have been conducted using the Ligand-Fit module. These studies have revealed possible hydrogen-boding interactions between the selected analogues and various amino acid residues in the glutamine synthetase active site.
- Full Text:
- Date Issued: 2008
Teachers' perceptions of participative management in a primary school in Namibia
- Authors: Kambonde, Samuel Angaleni
- Date: 2008
- Subjects: Education, Elementary -- Namibia Teachers -- Namibia School management and organization -- Namibia Educational leadership -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1795 , http://hdl.handle.net/10962/d1003680
- Description: Participative management, a key theme in contemporary management literature, is one of the central aims of the decentralization policy in Namibian education. Current perceptions of participative management on the part of teachers in Namibia are therefore of topical interest. This study set out to explore such perceptions among teachers in a Namibian primary school. The study is an interpretive case study focusing on six individual teachers’ understanding and experience of participative management within their place of work, a primary school in the Oshikoto region of Namibia. Semi-structured interviews, observation and document analysis were used to gather data. The study revealed a strong sense of commitment among the respondents to participative management and its accompanying practices, such as shared decision making and broad stakeholder involvement. Participative management was implemented chiefly through a committee structure for school organisation and government. Respondents also highlighted challenges facing participative management, such as the persistence of autocratic leadership, conflicts of interest in decision making, laziness and unwillingness among staff members, and a lack of understanding among parents concerning their role in the schooling of their children. HIV/AIDS was also seen to pose challenges to the free and frequent participation of stakeholders. The chief recommendation arising from these findings is that school leaders and managers’ understanding of tenets of participative management, such as site-based management and democratic management approaches, requires improvement and development.
- Full Text:
- Date Issued: 2008
- Authors: Kambonde, Samuel Angaleni
- Date: 2008
- Subjects: Education, Elementary -- Namibia Teachers -- Namibia School management and organization -- Namibia Educational leadership -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1795 , http://hdl.handle.net/10962/d1003680
- Description: Participative management, a key theme in contemporary management literature, is one of the central aims of the decentralization policy in Namibian education. Current perceptions of participative management on the part of teachers in Namibia are therefore of topical interest. This study set out to explore such perceptions among teachers in a Namibian primary school. The study is an interpretive case study focusing on six individual teachers’ understanding and experience of participative management within their place of work, a primary school in the Oshikoto region of Namibia. Semi-structured interviews, observation and document analysis were used to gather data. The study revealed a strong sense of commitment among the respondents to participative management and its accompanying practices, such as shared decision making and broad stakeholder involvement. Participative management was implemented chiefly through a committee structure for school organisation and government. Respondents also highlighted challenges facing participative management, such as the persistence of autocratic leadership, conflicts of interest in decision making, laziness and unwillingness among staff members, and a lack of understanding among parents concerning their role in the schooling of their children. HIV/AIDS was also seen to pose challenges to the free and frequent participation of stakeholders. The chief recommendation arising from these findings is that school leaders and managers’ understanding of tenets of participative management, such as site-based management and democratic management approaches, requires improvement and development.
- Full Text:
- Date Issued: 2008
Teaching reading in grade 4 Namibian classrooms : a case study
- Authors: Mutenda, Josephine
- Date: 2008
- Subjects: Literacy -- Study and teaching (Elementary) -- Namibia English language -- Study and teaching (Elementary) -- Namibia Reading (Elementary) -- Namibia Second language acquisition
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1797 , http://hdl.handle.net/10962/d1003682
- Description: Literacy is currently a topic of great concern in Namibia. Learners in this country have difficulty in reading and writing, and are often functionally illiterate. This study focuses on the beliefs, experiences and practices of teachers of reading in English to second language learners in Grade 4. Grade 4 is the transitional grade from mother tongue to English as the medium of instruction. The switch to English makes teaching reading in that language especially challenging. The study is structured according to the case study mode of enquiry, with the target respondents comprising Grade 4 teachers. Classroom observation, interviews and document analysis were used as means of collecting data. The main findings revealed that beliefs and experience had an impact on the way in which reading was taught in this study. It emerged that the teachers’ childhood experiences of literacy and learning to read are perpetuated in their beliefs, their attitudes, their basic conceptualization of reading and their current practices, all of which directly affect the children in their classes. Although the teachers’ professional training also had some influence on their teaching methods, neither of the two teachers interviewed had received much in-service support on how to teach reading, and they depended to a large extent on their recall of how they had learned to read themselves. Both teachers were taught in a traditional, teacher-centered way, involving phonics, rote-learning and drilling. Because they see themselves as competent readers, they believe that these approaches were effective and worth sustaining. Tentative recommendations arising from analysis of the data indicate possible areas for improvement in the teaching of reading, and offer guidelines to help teachers cope with the challenge.
- Full Text:
- Date Issued: 2008
- Authors: Mutenda, Josephine
- Date: 2008
- Subjects: Literacy -- Study and teaching (Elementary) -- Namibia English language -- Study and teaching (Elementary) -- Namibia Reading (Elementary) -- Namibia Second language acquisition
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1797 , http://hdl.handle.net/10962/d1003682
- Description: Literacy is currently a topic of great concern in Namibia. Learners in this country have difficulty in reading and writing, and are often functionally illiterate. This study focuses on the beliefs, experiences and practices of teachers of reading in English to second language learners in Grade 4. Grade 4 is the transitional grade from mother tongue to English as the medium of instruction. The switch to English makes teaching reading in that language especially challenging. The study is structured according to the case study mode of enquiry, with the target respondents comprising Grade 4 teachers. Classroom observation, interviews and document analysis were used as means of collecting data. The main findings revealed that beliefs and experience had an impact on the way in which reading was taught in this study. It emerged that the teachers’ childhood experiences of literacy and learning to read are perpetuated in their beliefs, their attitudes, their basic conceptualization of reading and their current practices, all of which directly affect the children in their classes. Although the teachers’ professional training also had some influence on their teaching methods, neither of the two teachers interviewed had received much in-service support on how to teach reading, and they depended to a large extent on their recall of how they had learned to read themselves. Both teachers were taught in a traditional, teacher-centered way, involving phonics, rote-learning and drilling. Because they see themselves as competent readers, they believe that these approaches were effective and worth sustaining. Tentative recommendations arising from analysis of the data indicate possible areas for improvement in the teaching of reading, and offer guidelines to help teachers cope with the challenge.
- Full Text:
- Date Issued: 2008
Technical constraints to smallholder agriculture: case study of Nkonkobe Municipality, Eastern Cape, South Africa
- Authors: Pote, Peter Paul Takawira
- Date: 2008
- Subjects: Farms, Small -- South Africa -- Eastern Cape , Farms -- South Africa -- Technology , Agricultural productivity -- South Africa -- Eastern Cape , Agriculture -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc Agric (Agricultural Economics)
- Identifier: vital:11193 , http://hdl.handle.net/10353/84 , Farms, Small -- South Africa -- Eastern Cape , Farms -- South Africa -- Technology , Agricultural productivity -- South Africa -- Eastern Cape , Agriculture -- South Africa -- Eastern Cape
- Description: Using data drawn from a sample of 80 farmers in the Kat River valley, this thesis presents the results of an assessment of the technical constraints affecting smallholder development and their implications for market access. A review of the relevant literature on the smallholder farm sector, technical change and technical constraints affecting smallholder farmers along with an overview of the agricultural marketing environment in South Africa has been presented. A critical review of the theoretical framework for consideration of technical change in agricultural development, with particular attention to the induced innovation model was undertaken. General information on the institutional set up was obtained by open-ended interviews of community leaders and focus groups. These interviews supplemented information obtained through literature study and document analysis. The other method of data collection employed was the single-visit household survey using structured questionnaires. The demographic and socio-economic characteristics of the surveyed farmers are described in this study. The selection process of the variables influencing market access was done by employing correlation and logistic regression analyses. Correlation analysis was conducted to ascertain the relationship among variables to find out the extent to which they mirror theory or intuition regarding their causation to constraints influencing market access. The logistic model was employed in the step-wise manner using each of key production inputs as response variables sequentially. On the basis of a binary logistic model, it can be concluded that the farmers still operate under a number of technical constraints. The most influential constraints are information, asset ownership, value of agricultural production and extension assistance. The study reflects the previous findings in South Africa that the legacy of apartheid continues to negatively impact on its agricultural economy. Key words: Technical Constraints, Technical Change,Market Access, Smallholder Farmers, Agricultural Development, Induced Innovation Model, Kat River Valley, Correlation analysis, Theoretical framework and Binary Logistic Model
- Full Text:
- Date Issued: 2008
- Authors: Pote, Peter Paul Takawira
- Date: 2008
- Subjects: Farms, Small -- South Africa -- Eastern Cape , Farms -- South Africa -- Technology , Agricultural productivity -- South Africa -- Eastern Cape , Agriculture -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc Agric (Agricultural Economics)
- Identifier: vital:11193 , http://hdl.handle.net/10353/84 , Farms, Small -- South Africa -- Eastern Cape , Farms -- South Africa -- Technology , Agricultural productivity -- South Africa -- Eastern Cape , Agriculture -- South Africa -- Eastern Cape
- Description: Using data drawn from a sample of 80 farmers in the Kat River valley, this thesis presents the results of an assessment of the technical constraints affecting smallholder development and their implications for market access. A review of the relevant literature on the smallholder farm sector, technical change and technical constraints affecting smallholder farmers along with an overview of the agricultural marketing environment in South Africa has been presented. A critical review of the theoretical framework for consideration of technical change in agricultural development, with particular attention to the induced innovation model was undertaken. General information on the institutional set up was obtained by open-ended interviews of community leaders and focus groups. These interviews supplemented information obtained through literature study and document analysis. The other method of data collection employed was the single-visit household survey using structured questionnaires. The demographic and socio-economic characteristics of the surveyed farmers are described in this study. The selection process of the variables influencing market access was done by employing correlation and logistic regression analyses. Correlation analysis was conducted to ascertain the relationship among variables to find out the extent to which they mirror theory or intuition regarding their causation to constraints influencing market access. The logistic model was employed in the step-wise manner using each of key production inputs as response variables sequentially. On the basis of a binary logistic model, it can be concluded that the farmers still operate under a number of technical constraints. The most influential constraints are information, asset ownership, value of agricultural production and extension assistance. The study reflects the previous findings in South Africa that the legacy of apartheid continues to negatively impact on its agricultural economy. Key words: Technical Constraints, Technical Change,Market Access, Smallholder Farmers, Agricultural Development, Induced Innovation Model, Kat River Valley, Correlation analysis, Theoretical framework and Binary Logistic Model
- Full Text:
- Date Issued: 2008
Temperature dependence of the HartRAO pointing model
- Authors: Copley, Charles Judd
- Date: 2008
- Subjects: Astronomical instruments , Observatories -- South Africa , Telescopes , Astronomical observatories , Astronomy -- Data processing , Antennas (Electronics)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5491 , http://hdl.handle.net/10962/d1005277 , Astronomical instruments , Observatories -- South Africa , Telescopes , Astronomical observatories , Astronomy -- Data processing , Antennas (Electronics)
- Description: This thesis investigates control aspects of the Hartebeeshoek Radio Astronomy Observatory (HartRAO) antenna. The installation of a new 22 GHz receiver has required the pointing accuracy to be improved to less than 4 mdeg. The effect of thermal conditions on the the HartRAO antenna pointing offset is investigated using a variety of modelling techniques including simple geometric modelling, neural networks and Principal Component Analysis (PCA). Convincing results were obtained for the Declination pointing offset, where applying certain model predictions to observations resulted in an improvement in Declination pointing offset from 5.5 mdeg to 3.2 mdeg (≈50%). The Right Ascension pointing model was considerably less convincing with an improvement of approximately from 5.5 mdeg to 4.5 mdeg (≈20%) in the Right Ascension pointing offset. The Declination pointing offset can be modelled sufficiently well to reduce the pointing offset to less than 4 mdeg, however further investigation of the underlying causes is required for the Right Ascension pointing offset.
- Full Text:
- Date Issued: 2008
- Authors: Copley, Charles Judd
- Date: 2008
- Subjects: Astronomical instruments , Observatories -- South Africa , Telescopes , Astronomical observatories , Astronomy -- Data processing , Antennas (Electronics)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5491 , http://hdl.handle.net/10962/d1005277 , Astronomical instruments , Observatories -- South Africa , Telescopes , Astronomical observatories , Astronomy -- Data processing , Antennas (Electronics)
- Description: This thesis investigates control aspects of the Hartebeeshoek Radio Astronomy Observatory (HartRAO) antenna. The installation of a new 22 GHz receiver has required the pointing accuracy to be improved to less than 4 mdeg. The effect of thermal conditions on the the HartRAO antenna pointing offset is investigated using a variety of modelling techniques including simple geometric modelling, neural networks and Principal Component Analysis (PCA). Convincing results were obtained for the Declination pointing offset, where applying certain model predictions to observations resulted in an improvement in Declination pointing offset from 5.5 mdeg to 3.2 mdeg (≈50%). The Right Ascension pointing model was considerably less convincing with an improvement of approximately from 5.5 mdeg to 4.5 mdeg (≈20%) in the Right Ascension pointing offset. The Declination pointing offset can be modelled sufficiently well to reduce the pointing offset to less than 4 mdeg, however further investigation of the underlying causes is required for the Right Ascension pointing offset.
- Full Text:
- Date Issued: 2008
That-has-been a discussion on the body cast as that which fixes a subject in time, in relation to notions surrounding the photograph
- Authors: Maree, Christine Fae
- Date: 2008
- Subjects: Barthes, Roland. Camera Lucida Photography, Artistic Photography -- Philosophy Photographic criticism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2412 , http://hdl.handle.net/10962/d1002208
- Description: Much like a photograph, a casts creates a replica of its referent, thereby immobilising the subject in time. While the subject continues in time and hence ages and inevitably dies the replica does not. With this basic notion of fixing a subject, I have built an argument to contextualise my sculptures, which are made using casts of elderly people. In this discussion I have looked at my works through the ideas of different theorists. The main theorist I have cited is Roland Barthes, specifically with regards to his notion of the photograph as discussed in his book Camera Lucida. I have also referenced three particular artists: Rachel Whiteread, Diane Arbus and Churchill Madikida, as I have found each of their works relate to my work in various ways, creating a different reading from each viewpoint.
- Full Text:
- Date Issued: 2008
- Authors: Maree, Christine Fae
- Date: 2008
- Subjects: Barthes, Roland. Camera Lucida Photography, Artistic Photography -- Philosophy Photographic criticism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2412 , http://hdl.handle.net/10962/d1002208
- Description: Much like a photograph, a casts creates a replica of its referent, thereby immobilising the subject in time. While the subject continues in time and hence ages and inevitably dies the replica does not. With this basic notion of fixing a subject, I have built an argument to contextualise my sculptures, which are made using casts of elderly people. In this discussion I have looked at my works through the ideas of different theorists. The main theorist I have cited is Roland Barthes, specifically with regards to his notion of the photograph as discussed in his book Camera Lucida. I have also referenced three particular artists: Rachel Whiteread, Diane Arbus and Churchill Madikida, as I have found each of their works relate to my work in various ways, creating a different reading from each viewpoint.
- Full Text:
- Date Issued: 2008
The "other" Africans : re-examining representations of sexuality in the work of Nicholas Hlobo and Zanele Muholi
- Authors: Makhubu, Nomusa
- Date: 2008
- Subjects: Hlobo, Nicholas Muholi, Zanele Women in art Photography, Artistic Homosexuality in art Sex in art Performance art Art, African
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2410 , http://hdl.handle.net/10962/d1002206
- Description: Nicholas Hlobo, a sculptor and performance artist, and Zanele Muholi, a photographer and activist, explore different ways of representing sexuality, particularly homosexuality. It is extremely difficult to discuss African sexuality in light of the stain of colonial attitudes that have exoticised and ascribed hypersexuality to African bodies. Moreover, sexuality is often not discussed in the construction of so-called African traditions and this has contributed to rendering African-ness as an exclusive identity. Tensions within and between categories of African-ness are compounded by constituted regulations. For example, Hlobo investigates the obligation of circumcision which seems to contrast the lifestyle and contexts in which he works and resides, and Muholi represents the existence of homosexual and transgender relations, even within conservative categories. The visual imagery of these two artists investigates the boundaries set by different social constructs. These set boundaries have also affected crimes against bisexual, transgender and homosexual individuals, which are reaching an alarming rate. Hlobo questions the validity of structures that marginalise homosexual individuals through drawing attention to the ambivalence of certain statutes. Muholi seeks to publicise the injustices imposed upon homosexual individuals in order to demonstrate the weight of that crisis. Although the South African legal system condones liberated expressions of sexual identity, due to social prejudices homosexual individuals are still treated as if they are not entitled to basic human rights. As a result, hate-crimes are not reported, and when they are they are not taken seriously. Hlobo and Muholi not only bring these issues to light, but also point out the dilemma inscribed in the social and political history of (South) Africa with regards to collective and individual identities. This thesis seeks to provide an analysis of the visual language used by Hlobo and Muholi to subvert the notion that homosexuality is “un-African” and to complicate concepts of gender, sexuality and identity.
- Full Text:
- Date Issued: 2008
- Authors: Makhubu, Nomusa
- Date: 2008
- Subjects: Hlobo, Nicholas Muholi, Zanele Women in art Photography, Artistic Homosexuality in art Sex in art Performance art Art, African
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2410 , http://hdl.handle.net/10962/d1002206
- Description: Nicholas Hlobo, a sculptor and performance artist, and Zanele Muholi, a photographer and activist, explore different ways of representing sexuality, particularly homosexuality. It is extremely difficult to discuss African sexuality in light of the stain of colonial attitudes that have exoticised and ascribed hypersexuality to African bodies. Moreover, sexuality is often not discussed in the construction of so-called African traditions and this has contributed to rendering African-ness as an exclusive identity. Tensions within and between categories of African-ness are compounded by constituted regulations. For example, Hlobo investigates the obligation of circumcision which seems to contrast the lifestyle and contexts in which he works and resides, and Muholi represents the existence of homosexual and transgender relations, even within conservative categories. The visual imagery of these two artists investigates the boundaries set by different social constructs. These set boundaries have also affected crimes against bisexual, transgender and homosexual individuals, which are reaching an alarming rate. Hlobo questions the validity of structures that marginalise homosexual individuals through drawing attention to the ambivalence of certain statutes. Muholi seeks to publicise the injustices imposed upon homosexual individuals in order to demonstrate the weight of that crisis. Although the South African legal system condones liberated expressions of sexual identity, due to social prejudices homosexual individuals are still treated as if they are not entitled to basic human rights. As a result, hate-crimes are not reported, and when they are they are not taken seriously. Hlobo and Muholi not only bring these issues to light, but also point out the dilemma inscribed in the social and political history of (South) Africa with regards to collective and individual identities. This thesis seeks to provide an analysis of the visual language used by Hlobo and Muholi to subvert the notion that homosexuality is “un-African” and to complicate concepts of gender, sexuality and identity.
- Full Text:
- Date Issued: 2008
The African Peer Review Mechanism : towards Africa's governance audit
- Authors: Molete, Nathan Teboho
- Date: 2008
- Subjects: African Peer Review Mechanism New Partnership for Africa's Development Peer review -- Africa Auditing -- Africa Africa -- Politics and government -- 1960-
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2867 , http://hdl.handle.net/10962/d1007681
- Description: The concept of accountability has grown to become an integral part of a broader political and socio-economic transformation. Closely associated to it is the concept of "auditing" which has established itself as a main driving force of accountability and a core means of delivering it. The extent of the rise and expansion of "auditing" has subsequently come to influence every aspect of modern life and this has led to a situation in which practices have had to adapt to the principles of "auditing" processes. Auditing has become prevalent in both the public and private spheres and this impact has far reaching consequences. The concept of "auditing" is evident in the African Peer Review Mechanism (APRM) and is central to its review process. This thesis focuses on the concept of "auditing" in order to illustrate how the APRM has borrowed and applied insights from other disciplinary practices so as to enhance an understanding of accountability and transparency as features of "good governance" and to explicate how these concepts are conceived within the framework of the New Partnership for Africa's Development (NEPAD). It also clarifies the relationship that exists between "peer review" and "auditing" and argues that rather than being considered as two poles marked by distance from each other "auditing" and "peer review" are closely related and mutually constitutive.
- Full Text:
- Date Issued: 2008
- Authors: Molete, Nathan Teboho
- Date: 2008
- Subjects: African Peer Review Mechanism New Partnership for Africa's Development Peer review -- Africa Auditing -- Africa Africa -- Politics and government -- 1960-
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2867 , http://hdl.handle.net/10962/d1007681
- Description: The concept of accountability has grown to become an integral part of a broader political and socio-economic transformation. Closely associated to it is the concept of "auditing" which has established itself as a main driving force of accountability and a core means of delivering it. The extent of the rise and expansion of "auditing" has subsequently come to influence every aspect of modern life and this has led to a situation in which practices have had to adapt to the principles of "auditing" processes. Auditing has become prevalent in both the public and private spheres and this impact has far reaching consequences. The concept of "auditing" is evident in the African Peer Review Mechanism (APRM) and is central to its review process. This thesis focuses on the concept of "auditing" in order to illustrate how the APRM has borrowed and applied insights from other disciplinary practices so as to enhance an understanding of accountability and transparency as features of "good governance" and to explicate how these concepts are conceived within the framework of the New Partnership for Africa's Development (NEPAD). It also clarifies the relationship that exists between "peer review" and "auditing" and argues that rather than being considered as two poles marked by distance from each other "auditing" and "peer review" are closely related and mutually constitutive.
- Full Text:
- Date Issued: 2008
The antecedents of customer satisfaction in a financial institution : a qualitative study
- Authors: Bleske, Adrian
- Date: 2008
- Subjects: Standard Bank Properties , Banks and banking -- South Africa , Banks and banking -- Customer services -- South Africa , Financial services industry -- South Africa , Bank management -- South Africa , Banks and banking -- Customer services -- Effect of marketing on
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:840 , http://hdl.handle.net/10962/d1015482
- Description: The following is a case study report on the Cape Town business unit of Standard Bank Properties. The research project falls within the ambit of services marketing which introduces several unique management challenges for service businesses that sell services as a core offering. The principal aim of the case study is to gain an understanding of why customers bank at the business unit and to discover what aspects are critical to customer satisfaction. A further goal of the research is to examine how the business unit could improve customer satisfaction and to highlight any impediments to further improving customer satisfaction at the business unit. It is generally regarded that quality customer service is essential to building customer relationships and hence the research project emphasis on services marketing and customer satisfaction within a financial services context. The paper commences with an overview of the South African Banking Sector and its unique challenges such as the Financial Service Charter and newly introduced legislation such as Financial Intelligence Centre Act. The case study will specifically investigate the property finance industry and a detailed analysis of the business unit's operations and process flow will also be undertaken. The reason for this background information is to assist the reader to understand how the business unit operates. The research project will investigate four unique differences between goods marketing and services marketing whereafter three theoretical propositions are introduced, namely the dyadic interaction and service encounter, the Service Profit Chain and finally Relationship Marketing. Evidence in the form of a narrative will be led from insights obtained from interviews conducted with customers and staff at the business unit against these propositions with support (or otherwise) from independent surveys and documents from the business unit. The result of this analysis is the identification of several areas of concern specifically: New employees and the service encounter, Problems with FICA, Lack of a customer complaint handling system, Empowerment issues, Turnaround times, Reliance on key staff These insights together with the evidence from the literature review will be analysed and several recommendations made to improve customer service and ultimately customer satisfaction at the business unit. Several recommendations for further research are offered as well as the identification of limitations including but not limited to the specificity of the case study report.
- Full Text:
- Date Issued: 2008
- Authors: Bleske, Adrian
- Date: 2008
- Subjects: Standard Bank Properties , Banks and banking -- South Africa , Banks and banking -- Customer services -- South Africa , Financial services industry -- South Africa , Bank management -- South Africa , Banks and banking -- Customer services -- Effect of marketing on
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:840 , http://hdl.handle.net/10962/d1015482
- Description: The following is a case study report on the Cape Town business unit of Standard Bank Properties. The research project falls within the ambit of services marketing which introduces several unique management challenges for service businesses that sell services as a core offering. The principal aim of the case study is to gain an understanding of why customers bank at the business unit and to discover what aspects are critical to customer satisfaction. A further goal of the research is to examine how the business unit could improve customer satisfaction and to highlight any impediments to further improving customer satisfaction at the business unit. It is generally regarded that quality customer service is essential to building customer relationships and hence the research project emphasis on services marketing and customer satisfaction within a financial services context. The paper commences with an overview of the South African Banking Sector and its unique challenges such as the Financial Service Charter and newly introduced legislation such as Financial Intelligence Centre Act. The case study will specifically investigate the property finance industry and a detailed analysis of the business unit's operations and process flow will also be undertaken. The reason for this background information is to assist the reader to understand how the business unit operates. The research project will investigate four unique differences between goods marketing and services marketing whereafter three theoretical propositions are introduced, namely the dyadic interaction and service encounter, the Service Profit Chain and finally Relationship Marketing. Evidence in the form of a narrative will be led from insights obtained from interviews conducted with customers and staff at the business unit against these propositions with support (or otherwise) from independent surveys and documents from the business unit. The result of this analysis is the identification of several areas of concern specifically: New employees and the service encounter, Problems with FICA, Lack of a customer complaint handling system, Empowerment issues, Turnaround times, Reliance on key staff These insights together with the evidence from the literature review will be analysed and several recommendations made to improve customer service and ultimately customer satisfaction at the business unit. Several recommendations for further research are offered as well as the identification of limitations including but not limited to the specificity of the case study report.
- Full Text:
- Date Issued: 2008
The applicability of the motivated strategies for learning questionnaire (MSLQ) for South Africa
- Authors: Somtsewu, Nolwazi
- Date: 2008
- Subjects: Educational tests and measurements -- South Africa -- Evaluation , Motivation in education -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9925 , http://hdl.handle.net/10948/657 , Educational tests and measurements -- South Africa -- Evaluation , Motivation in education -- South Africa
- Description: Admissions assessment batteries at most South African higher education institutions augment matriculation results with assessment data from cognitive and non-cognitive measures, in order to identify potentially successful students. The Motivated Strategies for Learning Questionnaire (MSLQ) is a non-cognitive measure, developed in the United States of America to assess the motivational orientation and use of learning strategies among college students. Numerous international studies have confirmed the reliability and validity of the MSLQ. Presently only three quantitative studies have been conducted in the South African higher education context, and in these, researchers have focused on the predictive validity, construct validity and reliability of the MSLQ when used with multicultural and multilingual groups of test-takers. An overview of these studies revealed a confirmation of adequate reliability of the MSLQ, and whereas it was established that nine of the fifteen subscales of the MSLQ are significantly related to the academic success of undergraduate students, limited support was found for the construct validity of the measure. As a result of these findings, a lack of qualitative methods for confirming or disconfirming the quantitative results was noted. The general aim of this study was to explore the applicability of the MSLQ in a higher education South African context, with respect to aspects related to bias, through assessing the item content with specific reference to language and cultural appropriateness. This was to ensure that items on the MSLQ did not favour or disadvantage any cultural and language groups. Investigations in this regard are a necessity in a country like South Africa in an effort to promote fair assessment practices. In order to achieve the above-mentioned aim, a quantitative and qualitative approach was utilised following an exploratory-descriptive research method. The researcher employed a non-probability, purposive sampling procedure to select post-graduate participants employed at the Nelson Mandela Metropolitan University (NMMU) to act as expert reviewers. A Bias Review Form was the primary mode of data collection and this enabled the researcher to collect the biographical details of the expert reviewers, their ratings of the language and cultural appropriateness of each item, and their comments, suggestions and recommendations for improving identified problematic items. Descriptive statistics were used to analyse the reviewers’ responses to the short biographical questionnaire included on the Bias Review Form, while frequency counts were calculated based on the reviewers’ responses to the language and cultural appropriateness of each item. The reviewers’ comments were analyzed into themes using Tesch’s model of content analysis. Three main themes relating to potential bias were identified, namely, language, culture and item characteristics. Guba’s model was employed for assessing the trustworthiness of the qualitative data and for data verification.
- Full Text:
- Date Issued: 2008
- Authors: Somtsewu, Nolwazi
- Date: 2008
- Subjects: Educational tests and measurements -- South Africa -- Evaluation , Motivation in education -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9925 , http://hdl.handle.net/10948/657 , Educational tests and measurements -- South Africa -- Evaluation , Motivation in education -- South Africa
- Description: Admissions assessment batteries at most South African higher education institutions augment matriculation results with assessment data from cognitive and non-cognitive measures, in order to identify potentially successful students. The Motivated Strategies for Learning Questionnaire (MSLQ) is a non-cognitive measure, developed in the United States of America to assess the motivational orientation and use of learning strategies among college students. Numerous international studies have confirmed the reliability and validity of the MSLQ. Presently only three quantitative studies have been conducted in the South African higher education context, and in these, researchers have focused on the predictive validity, construct validity and reliability of the MSLQ when used with multicultural and multilingual groups of test-takers. An overview of these studies revealed a confirmation of adequate reliability of the MSLQ, and whereas it was established that nine of the fifteen subscales of the MSLQ are significantly related to the academic success of undergraduate students, limited support was found for the construct validity of the measure. As a result of these findings, a lack of qualitative methods for confirming or disconfirming the quantitative results was noted. The general aim of this study was to explore the applicability of the MSLQ in a higher education South African context, with respect to aspects related to bias, through assessing the item content with specific reference to language and cultural appropriateness. This was to ensure that items on the MSLQ did not favour or disadvantage any cultural and language groups. Investigations in this regard are a necessity in a country like South Africa in an effort to promote fair assessment practices. In order to achieve the above-mentioned aim, a quantitative and qualitative approach was utilised following an exploratory-descriptive research method. The researcher employed a non-probability, purposive sampling procedure to select post-graduate participants employed at the Nelson Mandela Metropolitan University (NMMU) to act as expert reviewers. A Bias Review Form was the primary mode of data collection and this enabled the researcher to collect the biographical details of the expert reviewers, their ratings of the language and cultural appropriateness of each item, and their comments, suggestions and recommendations for improving identified problematic items. Descriptive statistics were used to analyse the reviewers’ responses to the short biographical questionnaire included on the Bias Review Form, while frequency counts were calculated based on the reviewers’ responses to the language and cultural appropriateness of each item. The reviewers’ comments were analyzed into themes using Tesch’s model of content analysis. Three main themes relating to potential bias were identified, namely, language, culture and item characteristics. Guba’s model was employed for assessing the trustworthiness of the qualitative data and for data verification.
- Full Text:
- Date Issued: 2008
The application of section 197 of the Labour Relations Act in an outsourcing context
- Authors: Biggs, Lynn
- Date: 2008
- Subjects: South Africa. Labour Relations Act (1995) , Labor laws and legislation -- South Africa , Contracting out -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10193 , http://hdl.handle.net/10948/751 , South Africa. Labour Relations Act (1995) , Labor laws and legislation -- South Africa , Contracting out -- Law and legislation -- South Africa
- Description: Section 197 of the Labour Relations Act (LRA) in both its original form and in its current form caused much confusion and debate. Originally it was interpreted that section 197 allowed for the automatic transfer of employees in cases where there was a transfer of the whole or part of a business, trade or undertaking as a going concern. That meant that the contracts of employment transfer to the new owner and that the employees could not refuse to be transferred. Various judges were tasked with interpreting this section in its original form and thus different interpretations emerged with the Labour Appeal Court ultimately deciding in the NEHAWU v University of Cape Town matter that employers involved in the transfer can decide between them, not to transfer the employees. The LAC further held that “outsourcing” does not necessarily entail a transfer of a business. Section 197 was amended in 2002 and the effect of the provisions is that the old employer is not required to seek the consent of the employees before their contracts are transferred and that the employment contracts transfer automatically. However, the current section has also raised some difficulties especially relating to: when does a transfer of a business as a going concern take place; what constitutes a “business”; when is an entity part of a business, trade, undertaking or service? A more glaring controversy relates to whether section 197 applies to “second-generation contracting out or outsourcing”. All provisions of the LRA should be interpreted in the context to advance economic development, social justice, labour peace and democratisation of the workplace. One of the primary objects of the LRA is to give effect to and to regulate the fundamental rights of the Constitution of the Republic of South Africa, 1996. Thus section 197 is to be interpreted in light of the objectives of the LRA as well as to promote the spirit, purport and objects of the Bill of Rights. The common law and international law are both important sources of comparison. The common law allows employers who transfer businesses free to decide whether or not the transfer will include the employees of the transferor. International law, particularly the European Union and the United Kingdom, favour the approach that when an entity is transferred, it retains its identity after the transfer and the safeguarding of employee rights in the context of business transfers. European and English jurisprudence have shown that almost any combination of events can constitute a transfer of a business.
- Full Text:
- Date Issued: 2008
- Authors: Biggs, Lynn
- Date: 2008
- Subjects: South Africa. Labour Relations Act (1995) , Labor laws and legislation -- South Africa , Contracting out -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10193 , http://hdl.handle.net/10948/751 , South Africa. Labour Relations Act (1995) , Labor laws and legislation -- South Africa , Contracting out -- Law and legislation -- South Africa
- Description: Section 197 of the Labour Relations Act (LRA) in both its original form and in its current form caused much confusion and debate. Originally it was interpreted that section 197 allowed for the automatic transfer of employees in cases where there was a transfer of the whole or part of a business, trade or undertaking as a going concern. That meant that the contracts of employment transfer to the new owner and that the employees could not refuse to be transferred. Various judges were tasked with interpreting this section in its original form and thus different interpretations emerged with the Labour Appeal Court ultimately deciding in the NEHAWU v University of Cape Town matter that employers involved in the transfer can decide between them, not to transfer the employees. The LAC further held that “outsourcing” does not necessarily entail a transfer of a business. Section 197 was amended in 2002 and the effect of the provisions is that the old employer is not required to seek the consent of the employees before their contracts are transferred and that the employment contracts transfer automatically. However, the current section has also raised some difficulties especially relating to: when does a transfer of a business as a going concern take place; what constitutes a “business”; when is an entity part of a business, trade, undertaking or service? A more glaring controversy relates to whether section 197 applies to “second-generation contracting out or outsourcing”. All provisions of the LRA should be interpreted in the context to advance economic development, social justice, labour peace and democratisation of the workplace. One of the primary objects of the LRA is to give effect to and to regulate the fundamental rights of the Constitution of the Republic of South Africa, 1996. Thus section 197 is to be interpreted in light of the objectives of the LRA as well as to promote the spirit, purport and objects of the Bill of Rights. The common law and international law are both important sources of comparison. The common law allows employers who transfer businesses free to decide whether or not the transfer will include the employees of the transferor. International law, particularly the European Union and the United Kingdom, favour the approach that when an entity is transferred, it retains its identity after the transfer and the safeguarding of employee rights in the context of business transfers. European and English jurisprudence have shown that almost any combination of events can constitute a transfer of a business.
- Full Text:
- Date Issued: 2008
The assessment of factors contributing to the sustainability of poverty relief projects in the Eastern Cape
- Authors: Makhalane, Vuyisile
- Date: 2008
- Subjects: Economic assistance, Domestic -- South Africa -- Eastern Cape , Poverty -- Economic aspects -- South Africa , Poverty -- South Africa -- Eastern Cape , Poverty -- Government policy -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8218 , http://hdl.handle.net/10948/1005 , Economic assistance, Domestic -- South Africa -- Eastern Cape , Poverty -- Economic aspects -- South Africa , Poverty -- South Africa -- Eastern Cape , Poverty -- Government policy -- South Africa -- Eastern Cape
- Description: The current study aimed at assessing the factors contributing to sustainability of Poverty Relief Projects by the Department of Social Development. The study was conducted in the Eastern Cape within Chris Hani District at Sakhizwe Local Municipality. The study employed both quantitative and qualitative research methods. Purposive sampling procedures have been seen as most suitable for this study and have been utilized to identify participants of the study. The sample consisted of thirty project members from six different projects and also included five Community Development Practitioners from the Department of Social Development. Semi- structured interviews, document review and focus group discussion were used to collect data for the study. The data was analyzed using descriptive statistics and thematic methods. The study revealed factors that contribute to the sustainability of the projects. These factors include the capacity of the project members and the departmental officials to implement and monitor the projects. Management and organization of the project plays an important role in determining the sustainability. Active participation of the project members in the planning of the project is important. Stakeholder participation and sharing of expertise is another important factor in determining the sustainability of the projects. Lastly, the study shows that monitoring and evaluation of the progress is necessary to ensure that the project achieve the desired outcome. It is recommended that the Department of Social Development should consider these factors and add them in the checklist before the funding of the project is approved. It is also important to determine the duration of the project in order to be able to measure its impact in a given period of time.
- Full Text:
- Date Issued: 2008
- Authors: Makhalane, Vuyisile
- Date: 2008
- Subjects: Economic assistance, Domestic -- South Africa -- Eastern Cape , Poverty -- Economic aspects -- South Africa , Poverty -- South Africa -- Eastern Cape , Poverty -- Government policy -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8218 , http://hdl.handle.net/10948/1005 , Economic assistance, Domestic -- South Africa -- Eastern Cape , Poverty -- Economic aspects -- South Africa , Poverty -- South Africa -- Eastern Cape , Poverty -- Government policy -- South Africa -- Eastern Cape
- Description: The current study aimed at assessing the factors contributing to sustainability of Poverty Relief Projects by the Department of Social Development. The study was conducted in the Eastern Cape within Chris Hani District at Sakhizwe Local Municipality. The study employed both quantitative and qualitative research methods. Purposive sampling procedures have been seen as most suitable for this study and have been utilized to identify participants of the study. The sample consisted of thirty project members from six different projects and also included five Community Development Practitioners from the Department of Social Development. Semi- structured interviews, document review and focus group discussion were used to collect data for the study. The data was analyzed using descriptive statistics and thematic methods. The study revealed factors that contribute to the sustainability of the projects. These factors include the capacity of the project members and the departmental officials to implement and monitor the projects. Management and organization of the project plays an important role in determining the sustainability. Active participation of the project members in the planning of the project is important. Stakeholder participation and sharing of expertise is another important factor in determining the sustainability of the projects. Lastly, the study shows that monitoring and evaluation of the progress is necessary to ensure that the project achieve the desired outcome. It is recommended that the Department of Social Development should consider these factors and add them in the checklist before the funding of the project is approved. It is also important to determine the duration of the project in order to be able to measure its impact in a given period of time.
- Full Text:
- Date Issued: 2008
The attitudes of isiXhosa-speaking students toward various languages of learning and teaching (LOLT) issues at Rhodes University
- Authors: Aziakpono, Philomina
- Date: 2008
- Subjects: Rhodes University -- Students -- Attitudes Language and education -- South Africa Xhosa language -- Study and teaching (Higher) -- South Africa English language -- Study and teaching (Higher) -- South Africa Education, Bilingual -- South Africa Language policy -- South Africa Language planning -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2339 , http://hdl.handle.net/10962/d1002621
- Description: This study aims at eliciting opinions and beliefs of isiXhosa-speaking students to revealtheir attitudes toward various languages of learning and teaching (LOLT) issues at RhodesUniversity, and to determine the influence of a number of variables (such as age, gender,schooling background, level of study and field of study) on these attitudes. Another aim of the study is to compare the findings of this research to the recent findings on isiXhosaspeaking students’ language attitudes at the University of the Western Cape (Dyers 1999) and the University of Fort Hare (Dalvit 2004). Qualitative and quantitative methods were used: data was gathered using a survey that employed a questionnaire and interviews (individual and focus group). The questionnaire data is analysed through using percentage scores as well as mean values coupled with Chi-square tests, while the interviews are analysed qualitatively to further confirm the results of the quantitative analysis. Results are also compared with other recent surveys at South African universities. The results reveal that respondents had a generally positive attitude toward English as LOLT, based mainly on instrumental motivations. More importantly, there was a positive attitude toward the use of isiXhosa alongside English. The motivations for the use of isiXhosa were both instrumental and integrative in nature. The majority of respondents who supported a bilingual arrangement did not, however, believe that a fully-fledged bilingual policy would be practical, mainly because of the multilingual nature of Rhodes University. They felt, however, that providing English and isiXhosa exam question-papers, bilingual tutor support and isiXhosa definitions of discipline-specific technical terms would facilitate learning. Most of the variables mentioned above had an influence on the relevant language attitudes, often confirming the findings of other studies. For instance, schooling background greatly influenced the language attitudes of respondents. Those from previously advantaged English-only schools showed very positive attitudes toward an English-only policy, while most respondents from formerly disadvantaged DET bilingual schools were favourably disposed toward a bilingual policy of English and isiXhosa at Rhodes University. A comparison of the findings of this study with those of recent findings on isiXhosa students’ language attitudes at other universities reveals that respondents at the University of Fort Hare were most favourable toward a bilingual policy, those at the University of the Western Cape were to some extent favourable toward a bilingual arrangement, while respondents at Rhodes University were least favourable toward a bilingual policy.
- Full Text:
- Date Issued: 2008
- Authors: Aziakpono, Philomina
- Date: 2008
- Subjects: Rhodes University -- Students -- Attitudes Language and education -- South Africa Xhosa language -- Study and teaching (Higher) -- South Africa English language -- Study and teaching (Higher) -- South Africa Education, Bilingual -- South Africa Language policy -- South Africa Language planning -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2339 , http://hdl.handle.net/10962/d1002621
- Description: This study aims at eliciting opinions and beliefs of isiXhosa-speaking students to revealtheir attitudes toward various languages of learning and teaching (LOLT) issues at RhodesUniversity, and to determine the influence of a number of variables (such as age, gender,schooling background, level of study and field of study) on these attitudes. Another aim of the study is to compare the findings of this research to the recent findings on isiXhosaspeaking students’ language attitudes at the University of the Western Cape (Dyers 1999) and the University of Fort Hare (Dalvit 2004). Qualitative and quantitative methods were used: data was gathered using a survey that employed a questionnaire and interviews (individual and focus group). The questionnaire data is analysed through using percentage scores as well as mean values coupled with Chi-square tests, while the interviews are analysed qualitatively to further confirm the results of the quantitative analysis. Results are also compared with other recent surveys at South African universities. The results reveal that respondents had a generally positive attitude toward English as LOLT, based mainly on instrumental motivations. More importantly, there was a positive attitude toward the use of isiXhosa alongside English. The motivations for the use of isiXhosa were both instrumental and integrative in nature. The majority of respondents who supported a bilingual arrangement did not, however, believe that a fully-fledged bilingual policy would be practical, mainly because of the multilingual nature of Rhodes University. They felt, however, that providing English and isiXhosa exam question-papers, bilingual tutor support and isiXhosa definitions of discipline-specific technical terms would facilitate learning. Most of the variables mentioned above had an influence on the relevant language attitudes, often confirming the findings of other studies. For instance, schooling background greatly influenced the language attitudes of respondents. Those from previously advantaged English-only schools showed very positive attitudes toward an English-only policy, while most respondents from formerly disadvantaged DET bilingual schools were favourably disposed toward a bilingual policy of English and isiXhosa at Rhodes University. A comparison of the findings of this study with those of recent findings on isiXhosa students’ language attitudes at other universities reveals that respondents at the University of Fort Hare were most favourable toward a bilingual policy, those at the University of the Western Cape were to some extent favourable toward a bilingual arrangement, while respondents at Rhodes University were least favourable toward a bilingual policy.
- Full Text:
- Date Issued: 2008
The auditor's duty of reasonable care and skill and the expectation to detect fraud
- Kujinga, Benjamin Tanyaradzwa
- Authors: Kujinga, Benjamin Tanyaradzwa
- Date: 2008
- Subjects: Auditing Standards , Accounting fraud , Financial statements -- Law and legislation
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:11115 , http://hdl.handle.net/10353/104 , Auditing Standards , Accounting fraud , Financial statements -- Law and legislation
- Description: Auditors perform a very important task within the context of the affairs of a company because financial reporting can only serve its purpose if stakeholders can rely on its accuracy and reliability. An auditor’s duty is to opine whether an entity’s financial reporting has been done according to the requirements of the law. The responsibility of reporting according to the law lies with an entity’s directors. Auditors cannot issue an absolute assurance as to the lawfulness and reliability of an entity’s financial reporting. However when it is subsequently discovered that the financial reporting was incorrect and that fraud has occurred auditors are often blamed and sued for enormous amounts of money for failing to detect material anomalies in the financial reports. These actions are based on the fact that auditors have a duty to exercise reasonable care and skill in the performance of their duties and through their failure to act as such, have caused financial harm to the clients or third parties. The fact that auditors are only required by law to exercise reasonable care and skill and perform an audit according to the standards of the reasonable auditor and not the most meticulous one, is often not regarded or is sometimes deliberately ignored. This clearly represents a problem in our law, namely that the presence of fraud in financial reports does not in itself suggest negligence on the part of the auditor but is apparently often perceived to do so. This research shows that the auditor’s duty of reasonable care and skill does not necessarily entail the duty to detect fraud. The elements of the duty of reasonable care and skill are identified from case law, legislation and international auditing standards. In order to limit the liability of auditors in general it is important to focus also on the elements of fault (negligence), wrongfulness and causation. This research shows that negligence cannot be established merely by the presence of fraud or material misstatements in financial statements. The responsibility for fair financial reporting lies with the directors. This research gives prominence to this fact which often seems to be ignored for convenience and in order to place the blame on the auditors. This research implicitly asks the question, why are auditors being held responsible for material misstatements in a company’s financial statements and not the directors? Guidelines for determining the extent of an auditor’s liability in this regard are formulated in this research.
- Full Text:
- Date Issued: 2008
- Authors: Kujinga, Benjamin Tanyaradzwa
- Date: 2008
- Subjects: Auditing Standards , Accounting fraud , Financial statements -- Law and legislation
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:11115 , http://hdl.handle.net/10353/104 , Auditing Standards , Accounting fraud , Financial statements -- Law and legislation
- Description: Auditors perform a very important task within the context of the affairs of a company because financial reporting can only serve its purpose if stakeholders can rely on its accuracy and reliability. An auditor’s duty is to opine whether an entity’s financial reporting has been done according to the requirements of the law. The responsibility of reporting according to the law lies with an entity’s directors. Auditors cannot issue an absolute assurance as to the lawfulness and reliability of an entity’s financial reporting. However when it is subsequently discovered that the financial reporting was incorrect and that fraud has occurred auditors are often blamed and sued for enormous amounts of money for failing to detect material anomalies in the financial reports. These actions are based on the fact that auditors have a duty to exercise reasonable care and skill in the performance of their duties and through their failure to act as such, have caused financial harm to the clients or third parties. The fact that auditors are only required by law to exercise reasonable care and skill and perform an audit according to the standards of the reasonable auditor and not the most meticulous one, is often not regarded or is sometimes deliberately ignored. This clearly represents a problem in our law, namely that the presence of fraud in financial reports does not in itself suggest negligence on the part of the auditor but is apparently often perceived to do so. This research shows that the auditor’s duty of reasonable care and skill does not necessarily entail the duty to detect fraud. The elements of the duty of reasonable care and skill are identified from case law, legislation and international auditing standards. In order to limit the liability of auditors in general it is important to focus also on the elements of fault (negligence), wrongfulness and causation. This research shows that negligence cannot be established merely by the presence of fraud or material misstatements in financial statements. The responsibility for fair financial reporting lies with the directors. This research gives prominence to this fact which often seems to be ignored for convenience and in order to place the blame on the auditors. This research implicitly asks the question, why are auditors being held responsible for material misstatements in a company’s financial statements and not the directors? Guidelines for determining the extent of an auditor’s liability in this regard are formulated in this research.
- Full Text:
- Date Issued: 2008
The career development of low socioeconomic status black South African adolescents: a career systems perspective
- Authors: Geijsendorpher, Clare
- Date: 2008
- Subjects: Blacks -- Education -- South Africa , Education and state -- South Africa , Vocational guidance -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9920 , http://hdl.handle.net/10948/670 , Blacks -- Education -- South Africa , Education and state -- South Africa , Vocational guidance -- South Africa
- Description: The adolescent stage of development entails many overt and covert challenges and influences that have bearing on spheres of later life, including career development. With South African counsellors being largely dependent on Western career theories, the influence of contextual factors such as cultural beliefs and historical background on the career development of South African adolescents has been largely ignored. The recent acknowledgement of the unique and complex interrelationship between individuals and their specific social, environmental and societal context has motivated the development of an overarching theoretical framework of career development, the Systems Theory Framework (STF). The present study has therefore employed the STF and a qualitative career assessment measure, the My System of Career Influences (MSCI), to facilitate in exploring and describing the unique systems of career influence on the career development of a group of South African adolescents. A non-probability, purposive sampling technique was employed to obtain the sample from a co-educational, Xhosa-speaking secondary school situated in a low socioeconomic area. The research approach was exploratory and descriptive in nature, and the MSCI assisted in the collection of qualitative and quantitative data from a sample of 64 Grade 9, 10 and 11 female and male black adolescents from low socioeconomic status environments. The qualitative data was subjected to content analysis to identify themes, while frequency counts/percentages were used for the quantitative data. The results of the study indicate that all influences within the three interrelated career systems have an influence on the career development of black adolescents. Furthermore, the MSCI workbook was shown to assist participants in identifying and evaluating significant systemic influences that have contributed to their career development to date. Participants from both genders and all grade levels were able to successfully complete the MSCI workbook and provide reflective comments on their MSCI personalised diagrams. The applicability of both the STF and the MSCI are acknowledged. Limitations and recommendations for future research based on the present findings are suggested.
- Full Text:
- Date Issued: 2008
- Authors: Geijsendorpher, Clare
- Date: 2008
- Subjects: Blacks -- Education -- South Africa , Education and state -- South Africa , Vocational guidance -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9920 , http://hdl.handle.net/10948/670 , Blacks -- Education -- South Africa , Education and state -- South Africa , Vocational guidance -- South Africa
- Description: The adolescent stage of development entails many overt and covert challenges and influences that have bearing on spheres of later life, including career development. With South African counsellors being largely dependent on Western career theories, the influence of contextual factors such as cultural beliefs and historical background on the career development of South African adolescents has been largely ignored. The recent acknowledgement of the unique and complex interrelationship between individuals and their specific social, environmental and societal context has motivated the development of an overarching theoretical framework of career development, the Systems Theory Framework (STF). The present study has therefore employed the STF and a qualitative career assessment measure, the My System of Career Influences (MSCI), to facilitate in exploring and describing the unique systems of career influence on the career development of a group of South African adolescents. A non-probability, purposive sampling technique was employed to obtain the sample from a co-educational, Xhosa-speaking secondary school situated in a low socioeconomic area. The research approach was exploratory and descriptive in nature, and the MSCI assisted in the collection of qualitative and quantitative data from a sample of 64 Grade 9, 10 and 11 female and male black adolescents from low socioeconomic status environments. The qualitative data was subjected to content analysis to identify themes, while frequency counts/percentages were used for the quantitative data. The results of the study indicate that all influences within the three interrelated career systems have an influence on the career development of black adolescents. Furthermore, the MSCI workbook was shown to assist participants in identifying and evaluating significant systemic influences that have contributed to their career development to date. Participants from both genders and all grade levels were able to successfully complete the MSCI workbook and provide reflective comments on their MSCI personalised diagrams. The applicability of both the STF and the MSCI are acknowledged. Limitations and recommendations for future research based on the present findings are suggested.
- Full Text:
- Date Issued: 2008