Research portfolio
- Authors: Katewa, E N M
- Date: 2004
- Subjects: Rundu College of Education (Namibia) Education -- Namibia Educational change -- Namibia College teachers -- Training of -- Namibia Curriculum planning -- Namibia Curriculum change -- Namibia Teaching -- Namibia Universities and colleges -- Namibia -- Curricula
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1734 , http://hdl.handle.net/10962/d1003617
- Description: The purpose of this study is to investigate the contradiction between the teaching of integration in ETP and the actual practice of compartmentalisation within ETP at the Rundu College of Education. The second part of this study is to explore and examine the way teacher educators could integrate subjects into their specialisation areas at college level. It is hoped that this study will contribute to the following: • The reason (s) why there is a contradiction between the teaching in ETP and the actual practice of compartmentalisation within the ETP. • Examining and investigating factors that have contributed to the teaching in a compartmentalised way.
- Full Text:
- Date Issued: 2004
- Authors: Katewa, E N M
- Date: 2004
- Subjects: Rundu College of Education (Namibia) Education -- Namibia Educational change -- Namibia College teachers -- Training of -- Namibia Curriculum planning -- Namibia Curriculum change -- Namibia Teaching -- Namibia Universities and colleges -- Namibia -- Curricula
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1734 , http://hdl.handle.net/10962/d1003617
- Description: The purpose of this study is to investigate the contradiction between the teaching of integration in ETP and the actual practice of compartmentalisation within ETP at the Rundu College of Education. The second part of this study is to explore and examine the way teacher educators could integrate subjects into their specialisation areas at college level. It is hoped that this study will contribute to the following: • The reason (s) why there is a contradiction between the teaching in ETP and the actual practice of compartmentalisation within the ETP. • Examining and investigating factors that have contributed to the teaching in a compartmentalised way.
- Full Text:
- Date Issued: 2004
The effects of selected proline-based cyclic dipeptides on growth and induction of apoptosis in cancer cells
- Authors: Brauns, Seth Clint Aron
- Date: 2004
- Subjects: Cyclic peptides , Antineoplastic agents -- Testing , Apoptosis
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:11088 , http://hdl.handle.net/10948/396 , Cyclic peptides , Antineoplastic agents -- Testing , Apoptosis
- Description: An increasing number of cyclic dipeptides (CDPs) have been shown to exhibit important biological activity including antifungal, antibacterial, anticonvulsant and immunomodulatory activity. Furthermore, some CDP derivatives have been shown to exhibit antitumour activity in vitro and in vivo. Several proline-based CDPs that exhibit biological activity have been detected in various processed foods and beverages. In the present study, the potential of seven proline-based CDPs to inhibit cancer cell growth was investigated in HT-29 (colon), HeLa (cervical), MCF-7 (breast) and WHCO3 (oesophageal) cancer cell lines. The CDPs used in this study were cyclo(Phe-Pro), cyclo(Tyr-Pro), cyclo(Gly-Pro), cyclo(Pro- Pro), cyclo(His-Pro), cyclo(Leu-Pro) and cyclo(Thr-Pro). The sulforhodamine B (SRB) cell growth assay was used in an initial screening phase to investigate the effects of the CDPs in HT-29, HeLa and MCF-7 cells. After exposing the cells to 10mM of the respective CDPs for 48 hours, the SRB assay results showed that only cyclo(Phe-Pro) exhibited more than 50% growth inhibition (p<0.01) in the three cell lines. The other CDPs showed comparatively marginal growth-inhibitory effects, except for cyclo(Tyr-Pro), which exhibited a pronounced effect in MCF-7 cells compared to HT-29 and HeLa cells. The MTT assay was used to confirm the SRB assay results for cyclo(Phe-Pro) and cyclo(Tyr-Pro), extending the investigation to the use of the fourth cell line WHCO3 and using a longer exposure time of 72 hours. The MTT assay demonstrated a dosedependent (0.008-10 mM) growth inhibition by cyclo(Phe-Pro) with an IC50 value of 4.04 ± 1.15 mM for HT-29 cells. Cyclo(Phe-Pro) was subsequently used to investigate whether the growth-inhibitory effects of this CDP were related to the induction of apoptosis in HT-29 cells. Hoechst 33342 staining showed that 5mM cyclo(Phe-Pro) induced characteristic chromatin condensation and nuclear fragmentation in 18.3 ± 2.8% (p<0.01) of HT-29 cells after 72 hours. Furthermore, annexin V binding revealed that HT-29 cells treated with 5 mM cyclo(Phe-Pro) displayed phosphatidylserine externalization after 48 hours. In addition, it was shown that 10 mM cyclo(Phe-Pro) induced poly(ADP-ribose)polymerase PARP cleavage, one of the hallmark events of apoptosis. The use of the broad-range caspase inhibitor Z-VAD-FMK, showed that this PARP cleavage was caspase-dependent, which in turn was confirmed by demonstrating an increase in caspase-3 activity (p<0.01) in cyclo(Phe- Pro)-treated HT-29 cells. In conclusion, these findings demonstrate that cyclo(Phe-Pro) inhibited the growth of HT- 29, MCF-7, HeLa and WHCO3 cells, and induced apoptosis in HT-29 colon cancer cells, suggesting the potential antitumour activity of cyclo(Phe-Pro)-related CDPs.
- Full Text:
- Date Issued: 2004
- Authors: Brauns, Seth Clint Aron
- Date: 2004
- Subjects: Cyclic peptides , Antineoplastic agents -- Testing , Apoptosis
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:11088 , http://hdl.handle.net/10948/396 , Cyclic peptides , Antineoplastic agents -- Testing , Apoptosis
- Description: An increasing number of cyclic dipeptides (CDPs) have been shown to exhibit important biological activity including antifungal, antibacterial, anticonvulsant and immunomodulatory activity. Furthermore, some CDP derivatives have been shown to exhibit antitumour activity in vitro and in vivo. Several proline-based CDPs that exhibit biological activity have been detected in various processed foods and beverages. In the present study, the potential of seven proline-based CDPs to inhibit cancer cell growth was investigated in HT-29 (colon), HeLa (cervical), MCF-7 (breast) and WHCO3 (oesophageal) cancer cell lines. The CDPs used in this study were cyclo(Phe-Pro), cyclo(Tyr-Pro), cyclo(Gly-Pro), cyclo(Pro- Pro), cyclo(His-Pro), cyclo(Leu-Pro) and cyclo(Thr-Pro). The sulforhodamine B (SRB) cell growth assay was used in an initial screening phase to investigate the effects of the CDPs in HT-29, HeLa and MCF-7 cells. After exposing the cells to 10mM of the respective CDPs for 48 hours, the SRB assay results showed that only cyclo(Phe-Pro) exhibited more than 50% growth inhibition (p<0.01) in the three cell lines. The other CDPs showed comparatively marginal growth-inhibitory effects, except for cyclo(Tyr-Pro), which exhibited a pronounced effect in MCF-7 cells compared to HT-29 and HeLa cells. The MTT assay was used to confirm the SRB assay results for cyclo(Phe-Pro) and cyclo(Tyr-Pro), extending the investigation to the use of the fourth cell line WHCO3 and using a longer exposure time of 72 hours. The MTT assay demonstrated a dosedependent (0.008-10 mM) growth inhibition by cyclo(Phe-Pro) with an IC50 value of 4.04 ± 1.15 mM for HT-29 cells. Cyclo(Phe-Pro) was subsequently used to investigate whether the growth-inhibitory effects of this CDP were related to the induction of apoptosis in HT-29 cells. Hoechst 33342 staining showed that 5mM cyclo(Phe-Pro) induced characteristic chromatin condensation and nuclear fragmentation in 18.3 ± 2.8% (p<0.01) of HT-29 cells after 72 hours. Furthermore, annexin V binding revealed that HT-29 cells treated with 5 mM cyclo(Phe-Pro) displayed phosphatidylserine externalization after 48 hours. In addition, it was shown that 10 mM cyclo(Phe-Pro) induced poly(ADP-ribose)polymerase PARP cleavage, one of the hallmark events of apoptosis. The use of the broad-range caspase inhibitor Z-VAD-FMK, showed that this PARP cleavage was caspase-dependent, which in turn was confirmed by demonstrating an increase in caspase-3 activity (p<0.01) in cyclo(Phe- Pro)-treated HT-29 cells. In conclusion, these findings demonstrate that cyclo(Phe-Pro) inhibited the growth of HT- 29, MCF-7, HeLa and WHCO3 cells, and induced apoptosis in HT-29 colon cancer cells, suggesting the potential antitumour activity of cyclo(Phe-Pro)-related CDPs.
- Full Text:
- Date Issued: 2004
Isolation of genes encoding heat shock protein 70 (hsp70s) from the coelacanth, Latimeria chalumnae
- Modisakeng, Keoagile W, Dorrington, Rosemary A, Blatch, Gregory L
- Authors: Modisakeng, Keoagile W , Dorrington, Rosemary A , Blatch, Gregory L
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:6459 , http://hdl.handle.net/10962/d1005788
- Description: Under stress conditions, proteins unfold or misfold, leading to the formation of aggregates. Molecular chaperones can be defined as proteins that facilitate the correct folding of other proteins, so that they attain a stable tertiary structure. In addition, they promote the refolding and degradation of denatured proteins after cellular stress. Heat shock proteins form one of the main classes of molecular chaperones. We are interested in determining if the genome of the coelacanth (Latimeria chalumnae) encodes a heat shock protein-based cytoprotection mechanism. We have isolated 50 kb and larger coelacanth genomic DNA from frozen skin tissue of L. chalumnae. From the alignments of several fish Hsp70 proteins, conserved regions at the N- and C-termini were identified. Codon usage tables were constructed from published coelacanth genes and degenerate primers were designed to isolate the full-length hsp70 gene and regions encoding the ATPase and the peptide binding domains. Since it is known that the tilapia and Fugu inducible hsp70 genes are intronless, we proceeded on the assumption that a coelacanth inducible hsp70 would also be intronless. A large fragment (1840 bp) encoding most of a coelacanth Hsp70 protein, and two partial fragments encoding a coelacanth Hsp70ATPase domain (1048 bp) and peptide binding domain (873 bp), were isolated by polymerase chain reaction amplification. Protein sequences translated from all the nucleotide sequences were closely identical to typical Hsp70s. This is the first study to provide evidence for a cytoprotection mechanism in the coelacanth involving an inducible Hsp70.
- Full Text:
- Date Issued: 2004
- Authors: Modisakeng, Keoagile W , Dorrington, Rosemary A , Blatch, Gregory L
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:6459 , http://hdl.handle.net/10962/d1005788
- Description: Under stress conditions, proteins unfold or misfold, leading to the formation of aggregates. Molecular chaperones can be defined as proteins that facilitate the correct folding of other proteins, so that they attain a stable tertiary structure. In addition, they promote the refolding and degradation of denatured proteins after cellular stress. Heat shock proteins form one of the main classes of molecular chaperones. We are interested in determining if the genome of the coelacanth (Latimeria chalumnae) encodes a heat shock protein-based cytoprotection mechanism. We have isolated 50 kb and larger coelacanth genomic DNA from frozen skin tissue of L. chalumnae. From the alignments of several fish Hsp70 proteins, conserved regions at the N- and C-termini were identified. Codon usage tables were constructed from published coelacanth genes and degenerate primers were designed to isolate the full-length hsp70 gene and regions encoding the ATPase and the peptide binding domains. Since it is known that the tilapia and Fugu inducible hsp70 genes are intronless, we proceeded on the assumption that a coelacanth inducible hsp70 would also be intronless. A large fragment (1840 bp) encoding most of a coelacanth Hsp70 protein, and two partial fragments encoding a coelacanth Hsp70ATPase domain (1048 bp) and peptide binding domain (873 bp), were isolated by polymerase chain reaction amplification. Protein sequences translated from all the nucleotide sequences were closely identical to typical Hsp70s. This is the first study to provide evidence for a cytoprotection mechanism in the coelacanth involving an inducible Hsp70.
- Full Text:
- Date Issued: 2004
A critical evaluation of outcomes based education from a developmental perspective in South Africa with particular reference to the Eastern Cape.
- Mdikane, Knowledge Mzwandile
- Authors: Mdikane, Knowledge Mzwandile
- Date: 2004
- Subjects: Reconstruction and Development Programme (South Africa) Competency-based education -- South Africa -- Eastern Cape Educational change -- South Africa -- Eastern Cape Education -- Social aspects -- South Africa -- Eastern Cape Curriculum change -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:6057 , http://hdl.handle.net/10962/d1006663
- Description: This research study seeks to examine the impact of Outcomes-Based Education (OBE)from a developmental perspective in the Eastern Cape. Two schools were selected as research sites, one from a previously advantaged area and the other from a previously disadvantaged area. These schools were evaluated on their understanding of OBE and its relationship to development. OBE was introduced in South Africa under controversial circumstances because of the legacy of apartheid education from which we are coming. Because of that, schools in South Africa reflect the inequalities that are resulting from apartheid legislation. In 1994 the government introduced the Reconstruction and Development Programme (RDP) to eradicate all the discrepancies resulting from apartheid. On the educational sphere, OBE was the curriculum policy aimed at eradicating the legacy of apartheid education. The then Minister of Education was convinced that OBE or Curriculum 2005 would be a developmental approach to education and would take South Africa into the 21st century. Ever since its introduction, educators have encountered many problems with the implementation of OBE, especially in the previously disadvantaged areas of the Eastern Cape. The researcher used semi-structured interviews to collect data from the respondents. However, one set of questionnaires was prepared for the educators, students, parents and education government officials. Because of the qualitative nature of the questionnaire the data collected was also analyzed qualitatively. Each question was analyzed from each of the focus groups and the researcher established findings that were analyzed in relation to the literature review. The researcher then was able to reach his own conclusions on the impact that OBE has on the South African education system and recommendations on what could be done for OBE to be successfully implemented and to be developmentally effective in previously disadvantaged areas of South Africa. The recommendations propose useful interventions, which could be made by the government to assist all the stakeholders involved in education in both an understanding and better implementation of OBE in Previously Disadvantaged Areas (PDA’s). They include provision of support to stakeholders and that teachers should be taught about the relationship between OBE and reconstruction. The research study focuses mainly on OBE and its relationship to development in urban or Previously Advantaged Areas (PAA’s) of two Eastern Cape schools. It will be relevant to the Eastern Cape Education Department in its efforts to implement OBE in schools and it could be a source of knowledge to educators. The conclusion that has been reached, however, is that there is a lot of ignorance about this new system of education to both educators and parents. There is also evidence of ignorance to matters pertaining to the relationship between OBE and it’s relationship to the Reconstruction and Development Programme (RDP). A major recommendation that is made then is that for OBE to be relevant in the South African context, it should help to improve the lives of ordinary people in South Africa, especially in Previously Disadvantaged Areas.
- Full Text:
- Date Issued: 2004
- Authors: Mdikane, Knowledge Mzwandile
- Date: 2004
- Subjects: Reconstruction and Development Programme (South Africa) Competency-based education -- South Africa -- Eastern Cape Educational change -- South Africa -- Eastern Cape Education -- Social aspects -- South Africa -- Eastern Cape Curriculum change -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:6057 , http://hdl.handle.net/10962/d1006663
- Description: This research study seeks to examine the impact of Outcomes-Based Education (OBE)from a developmental perspective in the Eastern Cape. Two schools were selected as research sites, one from a previously advantaged area and the other from a previously disadvantaged area. These schools were evaluated on their understanding of OBE and its relationship to development. OBE was introduced in South Africa under controversial circumstances because of the legacy of apartheid education from which we are coming. Because of that, schools in South Africa reflect the inequalities that are resulting from apartheid legislation. In 1994 the government introduced the Reconstruction and Development Programme (RDP) to eradicate all the discrepancies resulting from apartheid. On the educational sphere, OBE was the curriculum policy aimed at eradicating the legacy of apartheid education. The then Minister of Education was convinced that OBE or Curriculum 2005 would be a developmental approach to education and would take South Africa into the 21st century. Ever since its introduction, educators have encountered many problems with the implementation of OBE, especially in the previously disadvantaged areas of the Eastern Cape. The researcher used semi-structured interviews to collect data from the respondents. However, one set of questionnaires was prepared for the educators, students, parents and education government officials. Because of the qualitative nature of the questionnaire the data collected was also analyzed qualitatively. Each question was analyzed from each of the focus groups and the researcher established findings that were analyzed in relation to the literature review. The researcher then was able to reach his own conclusions on the impact that OBE has on the South African education system and recommendations on what could be done for OBE to be successfully implemented and to be developmentally effective in previously disadvantaged areas of South Africa. The recommendations propose useful interventions, which could be made by the government to assist all the stakeholders involved in education in both an understanding and better implementation of OBE in Previously Disadvantaged Areas (PDA’s). They include provision of support to stakeholders and that teachers should be taught about the relationship between OBE and reconstruction. The research study focuses mainly on OBE and its relationship to development in urban or Previously Advantaged Areas (PAA’s) of two Eastern Cape schools. It will be relevant to the Eastern Cape Education Department in its efforts to implement OBE in schools and it could be a source of knowledge to educators. The conclusion that has been reached, however, is that there is a lot of ignorance about this new system of education to both educators and parents. There is also evidence of ignorance to matters pertaining to the relationship between OBE and it’s relationship to the Reconstruction and Development Programme (RDP). A major recommendation that is made then is that for OBE to be relevant in the South African context, it should help to improve the lives of ordinary people in South Africa, especially in Previously Disadvantaged Areas.
- Full Text:
- Date Issued: 2004
Catalytic activity of iron and cobalt phthalocyanine complexes towards the oxidation of cyclohexene using tert-butylhydroperoxide and chloroperoxybenzoic acid
- Sehlotho, Nthapo, Nyokong, Tebello
- Authors: Sehlotho, Nthapo , Nyokong, Tebello
- Date: 2004
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/290257 , vital:56729 , xlink:href="https://doi.org/10.1016/j.molcata.2003.08.014"
- Description: Cyclohexene oxidation using tert-butylhydroperoxide (TBHP) or chloroperoxybenzoic acid (CPBA) in the presence of iron(II) polychlorophthalocyanine (Cl16PcFe), iron(II) phthalocyanine (PcFe) and cobalt(II) phthalocyanine (PcCo), results in the formation of the following products: cyclohexene oxide, 2-cyclohexene-1-ol and 2-cyclohexene-1-one. Adipic acid was also formed after long reaction times. The selectivity for 2-cyclohexene-1-one is favoured when Cl16PcFe or PcCo catalysts are employed, while PcFe is selective towards the formation of 2-cyclohexene-1-ol. The Cl16PcFe catalyst is transformed into a μ-oxo dimer (Cl16PcFeIIIOIIIFePcCl16) during the oxidation process. The catalytic process using the unsubstituted PcCoII and PcFeII catalysts involved PcMIII species as an intermediate. The active form of the Cl16PcFe catalyst was stable to degradation in that it was still active even after 4 weeks of continued catalysis.
- Full Text:
- Date Issued: 2004
- Authors: Sehlotho, Nthapo , Nyokong, Tebello
- Date: 2004
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/290257 , vital:56729 , xlink:href="https://doi.org/10.1016/j.molcata.2003.08.014"
- Description: Cyclohexene oxidation using tert-butylhydroperoxide (TBHP) or chloroperoxybenzoic acid (CPBA) in the presence of iron(II) polychlorophthalocyanine (Cl16PcFe), iron(II) phthalocyanine (PcFe) and cobalt(II) phthalocyanine (PcCo), results in the formation of the following products: cyclohexene oxide, 2-cyclohexene-1-ol and 2-cyclohexene-1-one. Adipic acid was also formed after long reaction times. The selectivity for 2-cyclohexene-1-one is favoured when Cl16PcFe or PcCo catalysts are employed, while PcFe is selective towards the formation of 2-cyclohexene-1-ol. The Cl16PcFe catalyst is transformed into a μ-oxo dimer (Cl16PcFeIIIOIIIFePcCl16) during the oxidation process. The catalytic process using the unsubstituted PcCoII and PcFeII catalysts involved PcMIII species as an intermediate. The active form of the Cl16PcFe catalyst was stable to degradation in that it was still active even after 4 weeks of continued catalysis.
- Full Text:
- Date Issued: 2004
An assessment of a light-attraction fishery in southern Lake Malawi
- Weyl, Olaf L F, Kazembe, Jacqueline, Booth, Anthony J, Mandere, D S
- Authors: Weyl, Olaf L F , Kazembe, Jacqueline , Booth, Anthony J , Mandere, D S
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123683 , vital:35472 , https://doi.org/10.2989/16085910409503787
- Description: This study provides the first quantitative assessment of the light-attraction component of a small-scale purse seine, locally known as a chilimira net, fishery in two areas of southern Lake Malawi. For monitoring purposes the shoreline of Lake Malawi is divided into a number of statistical strata. Two strata (‘2.1’ in the southeast arm and ‘3.1’ in the southwest arm of the lake) were selected for this study. Catch per unit effort in stratum 2.1 was generally lower than that recorded in stratum 3.1 but nets in stratum 2.1 fished more frequently, leading to similar annual catches in the two strata. Annual catch was estimated as 19.4 (CI = 15.9–23.5) tons net–1 year–1 in stratum 2.1 and 23.5 (CI = 19.5–28.1) tons net–1 year–1 in stratum 3.1 respectively. A total of 62 species from 28 cichlid genera, and 13 species from nine non-cichlid genera, were identified from the samples. Of the 37 genera identified, only five; Copadichromis, Dimidiochromis, Engraulicypris, Oreochromis and Rhamphochromis, contributed more than 5% to the total annual catch in either stratum. Their combined contribution to the annual catch was in excess of 85% in both strata. Comparisons showed that catch-composition was dependent on area. Length-frequency distributions of major target species in the catch showed that the fishery targeted juveniles in stratum 2.1, while in stratum 3.1 most individuals were harvested after reaching their lengthat-maturity. The dependence of catch-composition and size-selection on area indicates that management interventions for this fishery need to be area-specific. Since the fishery targets a diverse species assemblage, effort limitation or area closure may be the only viable management options, until such time as additional biological and fisheries data are available for the application of stock assessment models.
- Full Text:
- Date Issued: 2010
- Authors: Weyl, Olaf L F , Kazembe, Jacqueline , Booth, Anthony J , Mandere, D S
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123683 , vital:35472 , https://doi.org/10.2989/16085910409503787
- Description: This study provides the first quantitative assessment of the light-attraction component of a small-scale purse seine, locally known as a chilimira net, fishery in two areas of southern Lake Malawi. For monitoring purposes the shoreline of Lake Malawi is divided into a number of statistical strata. Two strata (‘2.1’ in the southeast arm and ‘3.1’ in the southwest arm of the lake) were selected for this study. Catch per unit effort in stratum 2.1 was generally lower than that recorded in stratum 3.1 but nets in stratum 2.1 fished more frequently, leading to similar annual catches in the two strata. Annual catch was estimated as 19.4 (CI = 15.9–23.5) tons net–1 year–1 in stratum 2.1 and 23.5 (CI = 19.5–28.1) tons net–1 year–1 in stratum 3.1 respectively. A total of 62 species from 28 cichlid genera, and 13 species from nine non-cichlid genera, were identified from the samples. Of the 37 genera identified, only five; Copadichromis, Dimidiochromis, Engraulicypris, Oreochromis and Rhamphochromis, contributed more than 5% to the total annual catch in either stratum. Their combined contribution to the annual catch was in excess of 85% in both strata. Comparisons showed that catch-composition was dependent on area. Length-frequency distributions of major target species in the catch showed that the fishery targeted juveniles in stratum 2.1, while in stratum 3.1 most individuals were harvested after reaching their lengthat-maturity. The dependence of catch-composition and size-selection on area indicates that management interventions for this fishery need to be area-specific. Since the fishery targets a diverse species assemblage, effort limitation or area closure may be the only viable management options, until such time as additional biological and fisheries data are available for the application of stock assessment models.
- Full Text:
- Date Issued: 2010
Constructing a cardinal measure of democratic development in a transition polity: the Nigerian example
- Dinneya, Godson E, Tsegaye, Asrat
- Authors: Dinneya, Godson E , Tsegaye, Asrat
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:6076 , http://hdl.handle.net/10962/d1003837
- Description: Existing measures of the level of democracy present in a given state treat democracy as a product and therefore place undue emphasis on actual freedoms enjoyed by the citizens of the country. In transition polities where the actual levels of freedom are low despite continuing efforts to democratize, democracy should be seen as a process rather than a product. A measure that dilutes the end product to capture today's struggles against undemocratic structures and policies does so in order to recognize the foundations these inputs lay for future democratic development. Nigeria exemplifies the many polities in transition on the African continent. This essay looks at the major political events that typify the processes of power change, quality of governance, political environment and democratic dividends, and uses them to construct democratization indices to determine the pattern and level of democratization in Nigeria since political independence. This exercise sets the stage for assessing the impacts of various dimensions of democratization on the performance of the Nigerian economy.
- Full Text:
- Date Issued: 2004
- Authors: Dinneya, Godson E , Tsegaye, Asrat
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:6076 , http://hdl.handle.net/10962/d1003837
- Description: Existing measures of the level of democracy present in a given state treat democracy as a product and therefore place undue emphasis on actual freedoms enjoyed by the citizens of the country. In transition polities where the actual levels of freedom are low despite continuing efforts to democratize, democracy should be seen as a process rather than a product. A measure that dilutes the end product to capture today's struggles against undemocratic structures and policies does so in order to recognize the foundations these inputs lay for future democratic development. Nigeria exemplifies the many polities in transition on the African continent. This essay looks at the major political events that typify the processes of power change, quality of governance, political environment and democratic dividends, and uses them to construct democratization indices to determine the pattern and level of democratization in Nigeria since political independence. This exercise sets the stage for assessing the impacts of various dimensions of democratization on the performance of the Nigerian economy.
- Full Text:
- Date Issued: 2004
Towards sustainable utilisation of the fishery resources of the Kowie Estuary, South Africa
- Authors: Nsubuga, Yvonne Nakalo
- Date: 2004
- Subjects: Estuarine fisheries -- South Africa -- Eastern Cape -- Kowie Estuary , Estuarine ecology -- South Africa -- Eastern Cape -- Kowie Estuary
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4761 , http://hdl.handle.net/10962/d1007154 , Estuarine fisheries -- South Africa -- Eastern Cape -- Kowie Estuary , Estuarine ecology -- South Africa -- Eastern Cape -- Kowie Estuary
- Description: The annual biomass of fish caught from estuaries in South Africa is currently estimated at over 24,800 tons. These estuarine fishes are caught by over 73,000 fishers, most of them recreational. Annual income derived from South Africa’s total estuarine fishery was worth approximately R430,000,000 in 1997. There is increasing concern that unless our estuarine fisheries are effectively managed, we will not be able to sustain these benefits into the future. Two factors that contribute to inadequate management of the estuarine fisheries in South Africa are a lack of data on which to base management decisions, and the lack of indicators by which to assess trends towards sustainability. The main aims of this study were to provide a description of the Kowie estuary fishery, identify suitable indicators of sustainability for this fishery, and assess its sustainability. Boat-based and shore-based roving creel surveys were carried out on the Kowie estuary between July 2000 and June 2001; 1,091 interviews were conducted with linefishers, and 277 interviews with bait collectors. In the boat-based interviews, data were collected on fisher demographics, fishing site, fishing method, choice of bait, fishing duration and catch statistics. In the shore-based surveys, additional data were collected from shore-based linefishers and bait collectors on their perceptions, attitudes, and knowledge of fishery regulations. Total annual fishing effort on the Kowie estuary was estimated at 30,952 angler hours (SD=154); 84% of it recreational, and the rest subsistence. Most fishing occurred during December and January, and decreased during winter, especially June and July. The annual yield of fish from the estuary was estimated at 16,240 fish (SD=667) or 5.99 tons (SD=0.81). By number, recreational anglers caught 69% of the annual catch. Three species dominated the catch by number: Rhabdosargus holubi (62%), Pomadasys commersonnii (17%) and Argyrosomus japonicus (7%). By mass, the dominant species caught were Argyrosomus japonicus (60%) and Pomadasys commersonnii (19%). Overall catch rate on the estuary was 0.57 fish.ang.⁻¹h⁻¹ (SD=0.24), or 0.298 kg ang.⁻¹h⁻¹ (SD=0.31). Overall catch rate by number was highest in the subsistence sector at 1.13 fish.ang.⁻¹h⁻¹(SD=0.70), while the boat-based recreational sector recorded the highest overall catch rate by mass (0.427 kg.ang.⁻¹h⁻¹, SD=0.625). Argyrosomus japonicus had the highest overall catch rate by mass on the estuary (0.496 kg ang.⁻¹h⁻¹), and Rhabdosargus holubi the highest overall catch rate by number (1.233 fish.ang.⁻¹h⁻¹). Only 19% of the catch of R. holubi was above the minimum legal size, while the estimates for P. commersonnii and A. japonicus were 21% and 25%, respectively. The annual number of bait collecting outings on the estuary was estimated at 2,889, of which 75% were subsistence. The highest numbers of bait collecting outings were recorded in December and April. The Bay of Biscay was the most popular site for bait collecting. A total of five invertebrate species were collected from the estuary to be used as bait, of which the mud prawn Upogebia africana was the dominant species. Total annual number of mud prawns collected from the estuary was estimated at 260,648; of which 41% was collected by subsistence bait collectors. Thirteen indicators were selected to assess sustainability in three fishery sectors on the Kowie estuary: namely, the shore-based recreational linefishery, the subsistence linefishery and the subsistence bait fishery. Social sustainability was evaluated on the basis of the use fishery resources to fulfil Maslow's basic human needs of food and employment, safety and security, affiliation, self-esteem and selfactualisation. Indicators of ecosystem sustainability assessed the productivity, diversity, disturbance and degree of water quality in the estuary. Institutional sustainability was assessed on the basis that management systems in the fishery should be results-oriented, consent-based, truth-seeking and adaptable. Data on indicator performance was collected during the shore-based roving creel survey, and from published literature. Arbitrarily set reference points were used to assess indicator performance, which was graded on a scale from 1 (indicating minimum probability of sustainability) to 4 (indicating maximum probability of sustainability). Sustainability was illustrated with the aid of amoeba plots. Overall sustainability was low in all three fishery sectors investigated. Nine of the 13 indicators in the shore-based recreational fishery performed poorly, while 11 of 13 in the subsistence line fishery, and 10 of 13 in the subsistence bait fishery, performed poorly. In all three fishery sectors all four selected indicators of institutional sustainability performed poorly. The probability of social sustainability was higher in the shore-based recreational line fishery, where the performance of two of the five selected indicators was very good. The probability of ecological sustainability was lowest in the shore-based recreational linefishery, while in the subsistence linefishery only one selected indicator performed very well. Recommendations made towards assessing sustainability in small-scale estuarine fisheries include the formulation of national policy for assessing sustainability in fisheries, the involvement of fishers in the assessment process, use of fisher perceptions where data gaps exist, and the use of research results to guide future management decisions. Management changes recommended for the Kowie estuary fishery include the formulation of an effective and integrated management plan, identification of the key stakeholders in the fishery, inclusion of fishers in management, the protection of the estuary’s Zostera capensis beds, and the establishment of a programme to increase research and monitoring in the fishery.
- Full Text:
- Date Issued: 2004
- Authors: Nsubuga, Yvonne Nakalo
- Date: 2004
- Subjects: Estuarine fisheries -- South Africa -- Eastern Cape -- Kowie Estuary , Estuarine ecology -- South Africa -- Eastern Cape -- Kowie Estuary
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4761 , http://hdl.handle.net/10962/d1007154 , Estuarine fisheries -- South Africa -- Eastern Cape -- Kowie Estuary , Estuarine ecology -- South Africa -- Eastern Cape -- Kowie Estuary
- Description: The annual biomass of fish caught from estuaries in South Africa is currently estimated at over 24,800 tons. These estuarine fishes are caught by over 73,000 fishers, most of them recreational. Annual income derived from South Africa’s total estuarine fishery was worth approximately R430,000,000 in 1997. There is increasing concern that unless our estuarine fisheries are effectively managed, we will not be able to sustain these benefits into the future. Two factors that contribute to inadequate management of the estuarine fisheries in South Africa are a lack of data on which to base management decisions, and the lack of indicators by which to assess trends towards sustainability. The main aims of this study were to provide a description of the Kowie estuary fishery, identify suitable indicators of sustainability for this fishery, and assess its sustainability. Boat-based and shore-based roving creel surveys were carried out on the Kowie estuary between July 2000 and June 2001; 1,091 interviews were conducted with linefishers, and 277 interviews with bait collectors. In the boat-based interviews, data were collected on fisher demographics, fishing site, fishing method, choice of bait, fishing duration and catch statistics. In the shore-based surveys, additional data were collected from shore-based linefishers and bait collectors on their perceptions, attitudes, and knowledge of fishery regulations. Total annual fishing effort on the Kowie estuary was estimated at 30,952 angler hours (SD=154); 84% of it recreational, and the rest subsistence. Most fishing occurred during December and January, and decreased during winter, especially June and July. The annual yield of fish from the estuary was estimated at 16,240 fish (SD=667) or 5.99 tons (SD=0.81). By number, recreational anglers caught 69% of the annual catch. Three species dominated the catch by number: Rhabdosargus holubi (62%), Pomadasys commersonnii (17%) and Argyrosomus japonicus (7%). By mass, the dominant species caught were Argyrosomus japonicus (60%) and Pomadasys commersonnii (19%). Overall catch rate on the estuary was 0.57 fish.ang.⁻¹h⁻¹ (SD=0.24), or 0.298 kg ang.⁻¹h⁻¹ (SD=0.31). Overall catch rate by number was highest in the subsistence sector at 1.13 fish.ang.⁻¹h⁻¹(SD=0.70), while the boat-based recreational sector recorded the highest overall catch rate by mass (0.427 kg.ang.⁻¹h⁻¹, SD=0.625). Argyrosomus japonicus had the highest overall catch rate by mass on the estuary (0.496 kg ang.⁻¹h⁻¹), and Rhabdosargus holubi the highest overall catch rate by number (1.233 fish.ang.⁻¹h⁻¹). Only 19% of the catch of R. holubi was above the minimum legal size, while the estimates for P. commersonnii and A. japonicus were 21% and 25%, respectively. The annual number of bait collecting outings on the estuary was estimated at 2,889, of which 75% were subsistence. The highest numbers of bait collecting outings were recorded in December and April. The Bay of Biscay was the most popular site for bait collecting. A total of five invertebrate species were collected from the estuary to be used as bait, of which the mud prawn Upogebia africana was the dominant species. Total annual number of mud prawns collected from the estuary was estimated at 260,648; of which 41% was collected by subsistence bait collectors. Thirteen indicators were selected to assess sustainability in three fishery sectors on the Kowie estuary: namely, the shore-based recreational linefishery, the subsistence linefishery and the subsistence bait fishery. Social sustainability was evaluated on the basis of the use fishery resources to fulfil Maslow's basic human needs of food and employment, safety and security, affiliation, self-esteem and selfactualisation. Indicators of ecosystem sustainability assessed the productivity, diversity, disturbance and degree of water quality in the estuary. Institutional sustainability was assessed on the basis that management systems in the fishery should be results-oriented, consent-based, truth-seeking and adaptable. Data on indicator performance was collected during the shore-based roving creel survey, and from published literature. Arbitrarily set reference points were used to assess indicator performance, which was graded on a scale from 1 (indicating minimum probability of sustainability) to 4 (indicating maximum probability of sustainability). Sustainability was illustrated with the aid of amoeba plots. Overall sustainability was low in all three fishery sectors investigated. Nine of the 13 indicators in the shore-based recreational fishery performed poorly, while 11 of 13 in the subsistence line fishery, and 10 of 13 in the subsistence bait fishery, performed poorly. In all three fishery sectors all four selected indicators of institutional sustainability performed poorly. The probability of social sustainability was higher in the shore-based recreational line fishery, where the performance of two of the five selected indicators was very good. The probability of ecological sustainability was lowest in the shore-based recreational linefishery, while in the subsistence linefishery only one selected indicator performed very well. Recommendations made towards assessing sustainability in small-scale estuarine fisheries include the formulation of national policy for assessing sustainability in fisheries, the involvement of fishers in the assessment process, use of fisher perceptions where data gaps exist, and the use of research results to guide future management decisions. Management changes recommended for the Kowie estuary fishery include the formulation of an effective and integrated management plan, identification of the key stakeholders in the fishery, inclusion of fishers in management, the protection of the estuary’s Zostera capensis beds, and the establishment of a programme to increase research and monitoring in the fishery.
- Full Text:
- Date Issued: 2004
Qongqothwane
- Nduna, S., Xakayi, S., Mgidi, A., Composer not specified, Dargie, Dave
- Authors: Nduna, S. , Xakayi, S. , Mgidi, A. , Composer not specified , Dargie, Dave
- Date: 2004
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Alice sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/343149 , vital:62974 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC344a-02
- Description: UFH music students accompanied by different types of marimba
- Full Text: false
- Date Issued: 2004
- Authors: Nduna, S. , Xakayi, S. , Mgidi, A. , Composer not specified , Dargie, Dave
- Date: 2004
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Alice sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/343149 , vital:62974 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC344a-02
- Description: UFH music students accompanied by different types of marimba
- Full Text: false
- Date Issued: 2004
Distinct kimberlite pipe classes with contrasting eruption processes
- Skinner, E M W, Marsh, Julian S
- Authors: Skinner, E M W , Marsh, Julian S
- Date: 2004
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/150603 , vital:38988 , https://doi.org/10.1016/j.lithos.2004.03.044
- Description: Field and Scott Smith [Field, M., Scott Smith, B.H., 1999. Contrasting geology and near-surface emplacement of kimberlite pipes in southern Africa and Canada. Proc. 7th Int. Kimb. Conf. (Eds. Gurney et al.) 1, 214–237.] propose that kimberlite pipes can be grouped into three types or classes. Classical or Class 1 pipes are the only class with characteristic low temperature, diatreme-facies kimberlite in addition to hypabyssal- and crater-facies kimberlite. Class 2 and 3 pipes are characterized only by hypabyssal-and crater-facies kimberlite.
- Full Text: false
- Date Issued: 2004
- Authors: Skinner, E M W , Marsh, Julian S
- Date: 2004
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/150603 , vital:38988 , https://doi.org/10.1016/j.lithos.2004.03.044
- Description: Field and Scott Smith [Field, M., Scott Smith, B.H., 1999. Contrasting geology and near-surface emplacement of kimberlite pipes in southern Africa and Canada. Proc. 7th Int. Kimb. Conf. (Eds. Gurney et al.) 1, 214–237.] propose that kimberlite pipes can be grouped into three types or classes. Classical or Class 1 pipes are the only class with characteristic low temperature, diatreme-facies kimberlite in addition to hypabyssal- and crater-facies kimberlite. Class 2 and 3 pipes are characterized only by hypabyssal-and crater-facies kimberlite.
- Full Text: false
- Date Issued: 2004
Geographic susceptibility of Helicoverpa armigera (Lepidoptera: Noctuidae) to insecticidal proteins in Bt-cotton in South Africa
- Van Jaarsveld, Martha Johanna
- Authors: Van Jaarsveld, Martha Johanna
- Date: 2004
- Subjects: Helicoverpa armigera , Noctuidae , Lepidoptera , Cotton -- Diseases and pests -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5701 , http://hdl.handle.net/10962/d1005387 , Helicoverpa armigera , Noctuidae , Lepidoptera , Cotton -- Diseases and pests -- South Africa
- Description: Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) (African bollworm) is a typical noctuid with a very catholic taste in food plants and whose larvae feed on a wide range of cultivated and wild plants. It has been identified as the most polyphagous and injurious pest in South Africa. Helicoverpa armigera is also a key pest of cotton in many parts of the world. This key pest requires extensive control as it adversely effects yield and has built up resistance to synthetic pyrethroid insecticides. Cotton is an important crop produced by commercial and small-scale farmers in South Africa. The local demand for cotton has not been exceeded yet, but to satisfy a demanding market, pest control costs play an important role in cotton production. The threat of an insect pest that has already shown resistance prompted the present study to investigate the possibility of resistance to Bt-cotton. Genetically engineered or Bt-cotton was introduced commercially in 1996 in South Africa. All Bt-cotton plants contain one or more foreign genes derived from the soil-dwelling bacterium, Bacillus thuringiensis (Berliner), which produces protein crystals. These crystals were isolated and transferred into the genome of a cotton plant resulting in the plant producing it’s own protein insecticide. In 1998, Monsanto (Pty) Ltd requested research into the geographic susceptibility of H. armigera to the insecticidal proteins in Bt-cotton in SA. Laboratory reared and field sampled populations of H. armigera were exposed to a diet mixed with various baseline concentrations of the Bt-gene Cry1Ac freeze dried protein. This study also determined the performance of H. armigera and Spodoptera littoralis (Boisduval) on different Bt-cotton field cultivars containing different Cry-protein genes. Results obtained indicated a significant difference in susceptibility in two field populations of H. armigera to the Bt-protein Cry1Ac, even though the LD50,s in the 2003 season did not indicate resistance. Bt-cotton cultivar 15985 BX controlled H. armigera and S. littoralis larvae, the best followed in descending order by cultivar 15985 X, 15985 B and DP50 B. Results on H. armigera also indicated that the Cry-proteins in the plant parts of the different cultivars did not diminish as the season progressed. The Bt-cotton cultivars induced retarded growth of larvae, due to either a repellent effect or lack of feeding by larvae. Widespread adoption of Bt-cotton by South African farmers led to regional declines in bollworm populations, reduced insecticide use, and increased yields. Genetically modified crops therefore contribute to a cost effective, sustainable, productive and efficient form of agriculture, with a resultant positive impact on the environment. As the market for commercial Bt-cotton in South Africa expands, it is recommended that a monitoring programme for potential resistant genes in H. armigera should be implemented at least every 2 - 3 years. This will ensure that effective resistance management strategies are utilised. Coupled with this are the Biosafety Risks regarding the effect of new proteins expressed in transgenic plants, which require further studies.
- Full Text:
- Date Issued: 2004
- Authors: Van Jaarsveld, Martha Johanna
- Date: 2004
- Subjects: Helicoverpa armigera , Noctuidae , Lepidoptera , Cotton -- Diseases and pests -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5701 , http://hdl.handle.net/10962/d1005387 , Helicoverpa armigera , Noctuidae , Lepidoptera , Cotton -- Diseases and pests -- South Africa
- Description: Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) (African bollworm) is a typical noctuid with a very catholic taste in food plants and whose larvae feed on a wide range of cultivated and wild plants. It has been identified as the most polyphagous and injurious pest in South Africa. Helicoverpa armigera is also a key pest of cotton in many parts of the world. This key pest requires extensive control as it adversely effects yield and has built up resistance to synthetic pyrethroid insecticides. Cotton is an important crop produced by commercial and small-scale farmers in South Africa. The local demand for cotton has not been exceeded yet, but to satisfy a demanding market, pest control costs play an important role in cotton production. The threat of an insect pest that has already shown resistance prompted the present study to investigate the possibility of resistance to Bt-cotton. Genetically engineered or Bt-cotton was introduced commercially in 1996 in South Africa. All Bt-cotton plants contain one or more foreign genes derived from the soil-dwelling bacterium, Bacillus thuringiensis (Berliner), which produces protein crystals. These crystals were isolated and transferred into the genome of a cotton plant resulting in the plant producing it’s own protein insecticide. In 1998, Monsanto (Pty) Ltd requested research into the geographic susceptibility of H. armigera to the insecticidal proteins in Bt-cotton in SA. Laboratory reared and field sampled populations of H. armigera were exposed to a diet mixed with various baseline concentrations of the Bt-gene Cry1Ac freeze dried protein. This study also determined the performance of H. armigera and Spodoptera littoralis (Boisduval) on different Bt-cotton field cultivars containing different Cry-protein genes. Results obtained indicated a significant difference in susceptibility in two field populations of H. armigera to the Bt-protein Cry1Ac, even though the LD50,s in the 2003 season did not indicate resistance. Bt-cotton cultivar 15985 BX controlled H. armigera and S. littoralis larvae, the best followed in descending order by cultivar 15985 X, 15985 B and DP50 B. Results on H. armigera also indicated that the Cry-proteins in the plant parts of the different cultivars did not diminish as the season progressed. The Bt-cotton cultivars induced retarded growth of larvae, due to either a repellent effect or lack of feeding by larvae. Widespread adoption of Bt-cotton by South African farmers led to regional declines in bollworm populations, reduced insecticide use, and increased yields. Genetically modified crops therefore contribute to a cost effective, sustainable, productive and efficient form of agriculture, with a resultant positive impact on the environment. As the market for commercial Bt-cotton in South Africa expands, it is recommended that a monitoring programme for potential resistant genes in H. armigera should be implemented at least every 2 - 3 years. This will ensure that effective resistance management strategies are utilised. Coupled with this are the Biosafety Risks regarding the effect of new proteins expressed in transgenic plants, which require further studies.
- Full Text:
- Date Issued: 2004
Rare earth element geochemistry of the Insizwa lobe of the Mount Ayliff Complex, Eastern Cape, South Africa
- Authors: Marsh, Julian S
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:6736 , http://hdl.handle.net/10962/d1007548
- Description: New rare earth element (REE) data from all lithologies of the Insizwa lobe, Mount Ayliff Complex, are presented. On the basis of size and type of Eu anomaly, the geochemical subdivision of the complex as previously described is sustained and, additionally, the Top Gabbronorite of the Central Zone is shown to have formed from a magma that was compositionally distinct from other Central Zone magmas. The Basal Zone crystallized from magmas with large negative Eu anomalies probably acquired through crustal contamination. Previously recognized compositional heterogeneity in the contact rocks is also a feature of the REE. Overall, the Insizwa magmas had higher La/Sm ratios and, to a lesser extent, higher Gd/Yb ratios than Karoo basalts and appear to have no representatives in the basalt lava sequence of Lesotho.
- Full Text:
- Date Issued: 2004
- Authors: Marsh, Julian S
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:6736 , http://hdl.handle.net/10962/d1007548
- Description: New rare earth element (REE) data from all lithologies of the Insizwa lobe, Mount Ayliff Complex, are presented. On the basis of size and type of Eu anomaly, the geochemical subdivision of the complex as previously described is sustained and, additionally, the Top Gabbronorite of the Central Zone is shown to have formed from a magma that was compositionally distinct from other Central Zone magmas. The Basal Zone crystallized from magmas with large negative Eu anomalies probably acquired through crustal contamination. Previously recognized compositional heterogeneity in the contact rocks is also a feature of the REE. Overall, the Insizwa magmas had higher La/Sm ratios and, to a lesser extent, higher Gd/Yb ratios than Karoo basalts and appear to have no representatives in the basalt lava sequence of Lesotho.
- Full Text:
- Date Issued: 2004
Design and evaluation of a new pharmaceutical pictogram sequence to convey medicine usage
- Mansoor, Leila E, Dowse, Roslind
- Authors: Mansoor, Leila E , Dowse, Roslind
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:6402 , http://hdl.handle.net/10962/d1006338
- Description: Pictorials may be used to augment textual instructions in the depiction of safety and warning information on medicines. The objective of this study was to design, develop and evaluate a simple and culturally appropriate pictogram sequence for using nystatin suspension, and to assess its understandability in low-literate Xhosa participants. A new pharmaceutical pictogram sequence was designed through focus group discussions and evaluated in a 2-phase process. The results of Phase 1 (30 participants) identified various problems associated with the new pictogram sequence. It was modified accordingly and re-evaluated in Phase 2 with 20 participants. All participants belonged to the Xhosa group, had between 0 and 7 years of formal schooling and had English as their second language. Acceptance of the new pictogram sequence was based on international standards (ANSI and ISO criterion) for evaluating the comprehensibility of pictograms. In Phase 1, the new pictogram sequence was correctly interpreted by 66.7% of the participants and this complied with the ISO criterion of 67% correct. In Phase 2, 95% of the participants were able to correctly interpret the new pictogram sequence. This result complied with the ANSI criterion of 85% correct, therefore, this new pictogram sequence was considered to be acceptable. This study has illustrated the success of using a consultative approach in the design of new pictograms.
- Full Text:
- Date Issued: 2004
- Authors: Mansoor, Leila E , Dowse, Roslind
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:6402 , http://hdl.handle.net/10962/d1006338
- Description: Pictorials may be used to augment textual instructions in the depiction of safety and warning information on medicines. The objective of this study was to design, develop and evaluate a simple and culturally appropriate pictogram sequence for using nystatin suspension, and to assess its understandability in low-literate Xhosa participants. A new pharmaceutical pictogram sequence was designed through focus group discussions and evaluated in a 2-phase process. The results of Phase 1 (30 participants) identified various problems associated with the new pictogram sequence. It was modified accordingly and re-evaluated in Phase 2 with 20 participants. All participants belonged to the Xhosa group, had between 0 and 7 years of formal schooling and had English as their second language. Acceptance of the new pictogram sequence was based on international standards (ANSI and ISO criterion) for evaluating the comprehensibility of pictograms. In Phase 1, the new pictogram sequence was correctly interpreted by 66.7% of the participants and this complied with the ISO criterion of 67% correct. In Phase 2, 95% of the participants were able to correctly interpret the new pictogram sequence. This result complied with the ANSI criterion of 85% correct, therefore, this new pictogram sequence was considered to be acceptable. This study has illustrated the success of using a consultative approach in the design of new pictograms.
- Full Text:
- Date Issued: 2004
Dismissal for medical incapacity
- Authors: Boy, Anthony Albert
- Date: 2004
- Subjects: Employees -- Dismissal of -- Law and legislation -- South Africa , Capacity and disability -- South Africa , Labor laws and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:11047 , http://hdl.handle.net/10948/316 , Employees -- Dismissal of -- Law and legislation -- South Africa , Capacity and disability -- South Africa , Labor laws and legislation -- South Africa
- Description: Labour law in South Africa has evolved over the past century at an ever increasing pace. The establishment of a democratic government in 1995 has been the trigger for a large number of labour law statutes being promulgated, particularly with reference to the laws governing the employment relationship and dismissal. From very humble and employer biased dispute resolution application under the common law of contract, labour law in this country has evolved through the various acts culminating in a labour law system which is highly regulated and codified. Dismissal for medical incapacity in this treatise is reviewed with regard to the applicable statutes and the various codes of good practice as the law has evolved and developed from the period covered by the common law through that covered by the 1995 LRA up to and including the current period. Particular attention is paid to both substantive and procedural requirements as well as the remedies applicable under the different legal regimes and the pertinent tribunals and courts. Regard is also given to the duration and causes of incapacity and the effect this may have on the applicable remedy applied by these tribunals. It will become apparant that the medically incapacitated employee occupied a relatively weak and vulnerable position under the common law as opposed to the current position under the 1995 LRA. The influence of the remedies applied by the tribunals under the 1956 LRA are clearly evident in the current regulations and codes under the 1995 LRA which contain specific statutory provisions for employees not to be unfairly dismissed. Distinctions are drawn between permissible and impermissible dismissals, with medical incapacity falling under the former. v Furthermore, a distinction is drawn statutorily between permanent and temporary illhealth/ injury incapacity with detailed guidelines for substantive and procedural fairness requirements to be met by employers. The powers of the specialist tribunals (CCMA, Bargaining Councils and Labour Courts) are regulated by statutory provisions and deal with appropriate remedies (reinstatement and/or compensation) a wardable in appropriate circumstances. Certain specific areas nonetheless still remain problematic for these tribunals and hence questions that require clear direction from the drafters of our law are: 1. How to distinguish misconduct in alcohol and drug abuse cases? 2. What degree of intermittent absenteeism is required before dismissal would be warranted? In certain other areas the tribunals have been fairly consistent and prescriptive in their approach and remedies awarded. Included here would be permanent incapacity, HIV cases and misconduct. It will emerge, however, that under the 1995 LRA the position of employees and the protections afforded them have been greatly increased.
- Full Text:
- Date Issued: 2004
- Authors: Boy, Anthony Albert
- Date: 2004
- Subjects: Employees -- Dismissal of -- Law and legislation -- South Africa , Capacity and disability -- South Africa , Labor laws and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:11047 , http://hdl.handle.net/10948/316 , Employees -- Dismissal of -- Law and legislation -- South Africa , Capacity and disability -- South Africa , Labor laws and legislation -- South Africa
- Description: Labour law in South Africa has evolved over the past century at an ever increasing pace. The establishment of a democratic government in 1995 has been the trigger for a large number of labour law statutes being promulgated, particularly with reference to the laws governing the employment relationship and dismissal. From very humble and employer biased dispute resolution application under the common law of contract, labour law in this country has evolved through the various acts culminating in a labour law system which is highly regulated and codified. Dismissal for medical incapacity in this treatise is reviewed with regard to the applicable statutes and the various codes of good practice as the law has evolved and developed from the period covered by the common law through that covered by the 1995 LRA up to and including the current period. Particular attention is paid to both substantive and procedural requirements as well as the remedies applicable under the different legal regimes and the pertinent tribunals and courts. Regard is also given to the duration and causes of incapacity and the effect this may have on the applicable remedy applied by these tribunals. It will become apparant that the medically incapacitated employee occupied a relatively weak and vulnerable position under the common law as opposed to the current position under the 1995 LRA. The influence of the remedies applied by the tribunals under the 1956 LRA are clearly evident in the current regulations and codes under the 1995 LRA which contain specific statutory provisions for employees not to be unfairly dismissed. Distinctions are drawn between permissible and impermissible dismissals, with medical incapacity falling under the former. v Furthermore, a distinction is drawn statutorily between permanent and temporary illhealth/ injury incapacity with detailed guidelines for substantive and procedural fairness requirements to be met by employers. The powers of the specialist tribunals (CCMA, Bargaining Councils and Labour Courts) are regulated by statutory provisions and deal with appropriate remedies (reinstatement and/or compensation) a wardable in appropriate circumstances. Certain specific areas nonetheless still remain problematic for these tribunals and hence questions that require clear direction from the drafters of our law are: 1. How to distinguish misconduct in alcohol and drug abuse cases? 2. What degree of intermittent absenteeism is required before dismissal would be warranted? In certain other areas the tribunals have been fairly consistent and prescriptive in their approach and remedies awarded. Included here would be permanent incapacity, HIV cases and misconduct. It will emerge, however, that under the 1995 LRA the position of employees and the protections afforded them have been greatly increased.
- Full Text:
- Date Issued: 2004
Mapping the Radio KC community : a case study assessing the impact of participatory research methods in assisting community radio producers to identify programming content
- Authors: Davidson, Brett Russell
- Date: 2004
- Subjects: Radio broadcasting -- South Africa -- Paarl , Radio stations -- South Africa -- Paarl , Radio journalism -- South Africa -- Paarl , Radio broadcasters -- Research -- South Africa -- Paarl , Mass media -- Political aspects -- South Africa , Mass media -- Social aspects -- South Africa , Radio in community development
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3497 , http://hdl.handle.net/10962/d1003716 , Radio broadcasting -- South Africa -- Paarl , Radio stations -- South Africa -- Paarl , Radio journalism -- South Africa -- Paarl , Radio broadcasters -- Research -- South Africa -- Paarl , Mass media -- Political aspects -- South Africa , Mass media -- Social aspects -- South Africa , Radio in community development
- Description: This thesis deals with the introduction of participatory research methods to programming staff working at Radio KC, a South African community radio station based in Paarl, in the Western Cape province. The focus is on a series of workshops conducted at the station, dealing with research tools developed to enable station workers to undertake research of their community. The aim was to determine, by means ofa case study, whether the introduction of participatory research methods could improve the ability of community broadcasters to facilitate democratic participation among the communities in which they operate. More particularly, the thesis assesses whether the application of such methods has improved the ability of the programming staff that were involved in this case study to identify a wider range of stories and voices within their target community, for inclusion in programming content. The participatory research techniques that are applied at the radio station are based on ideas in 'civic mapping' developed by Harwood and McCrehan (1996) under the auspices of The Pew Center for Civic Journalism, and supplemented by insights from Friedland (2001) and Downs and Stea (1977) about the cognitive, normative and imagined dimensions of community. All of the ideas and techniques were adapted for the South African situation. The findings of the research project illustrate that for community stations, the key concepts of 'community' and 'participation' are highly complex ones and that stations need assistance to apply these concepts in their everyday practice. The account of the intervention at Radio KC shows that the process did indeed assist the individual research participants to better deal with the application of these concepts. It did not, however, make much impact on the station as a whole. Reasons for this are believed to lie in the organisational dynamics of the station, and the fact that the model as applied in this case did not provide a means for tackling the agendas, investments and power relations that define the activities of individuals at a given community radio station - what Hochheimer (1993) talks about as the entrenchment of power and personalities. In order to address these shortcomings, an attempt is made to develop a model for future application, which places the mapping process within the context of a broader strategic planning process, focussed on a station's programming schedule.
- Full Text:
- Date Issued: 2004
- Authors: Davidson, Brett Russell
- Date: 2004
- Subjects: Radio broadcasting -- South Africa -- Paarl , Radio stations -- South Africa -- Paarl , Radio journalism -- South Africa -- Paarl , Radio broadcasters -- Research -- South Africa -- Paarl , Mass media -- Political aspects -- South Africa , Mass media -- Social aspects -- South Africa , Radio in community development
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3497 , http://hdl.handle.net/10962/d1003716 , Radio broadcasting -- South Africa -- Paarl , Radio stations -- South Africa -- Paarl , Radio journalism -- South Africa -- Paarl , Radio broadcasters -- Research -- South Africa -- Paarl , Mass media -- Political aspects -- South Africa , Mass media -- Social aspects -- South Africa , Radio in community development
- Description: This thesis deals with the introduction of participatory research methods to programming staff working at Radio KC, a South African community radio station based in Paarl, in the Western Cape province. The focus is on a series of workshops conducted at the station, dealing with research tools developed to enable station workers to undertake research of their community. The aim was to determine, by means ofa case study, whether the introduction of participatory research methods could improve the ability of community broadcasters to facilitate democratic participation among the communities in which they operate. More particularly, the thesis assesses whether the application of such methods has improved the ability of the programming staff that were involved in this case study to identify a wider range of stories and voices within their target community, for inclusion in programming content. The participatory research techniques that are applied at the radio station are based on ideas in 'civic mapping' developed by Harwood and McCrehan (1996) under the auspices of The Pew Center for Civic Journalism, and supplemented by insights from Friedland (2001) and Downs and Stea (1977) about the cognitive, normative and imagined dimensions of community. All of the ideas and techniques were adapted for the South African situation. The findings of the research project illustrate that for community stations, the key concepts of 'community' and 'participation' are highly complex ones and that stations need assistance to apply these concepts in their everyday practice. The account of the intervention at Radio KC shows that the process did indeed assist the individual research participants to better deal with the application of these concepts. It did not, however, make much impact on the station as a whole. Reasons for this are believed to lie in the organisational dynamics of the station, and the fact that the model as applied in this case did not provide a means for tackling the agendas, investments and power relations that define the activities of individuals at a given community radio station - what Hochheimer (1993) talks about as the entrenchment of power and personalities. In order to address these shortcomings, an attempt is made to develop a model for future application, which places the mapping process within the context of a broader strategic planning process, focussed on a station's programming schedule.
- Full Text:
- Date Issued: 2004
Language and value: towards accepting a richer linguistic ecology for South Africa
- Authors: Wright, Laurence
- Date: 2004
- Language: English
- Type: text , article
- Identifier: vital:7042 , http://hdl.handle.net/10962/d1007383 , https://doi.org/10.1075/lplp.28.2.05wri
- Description: preprint , Language policy debate is often obscured by two factors: failure to acknowledge different time-frames attending contrasting positions, and failure to recognise that ordinary people are motivated by their perceived best interests in the present. This article argues that the key to more general public acceptance of linguistic ecological diversity in South Africa is to shift the emphasis from policy development to practical language cultivation issues. Provide the requisite cultivation support, and acceptance of a revitalised future for African languages becomes more assured. It should also be understood that the modernisation of African languages in South Africa has a political dimension concerning which South African language commentators are strangely silent. This political thrust may not be entirely congruent with the concerns of those whose brief for African languages is primarily cultural or ecological – if, indeed, they are even aware of it. Finally, it needs to be recognised that language development under conditions of controlled influence, as in the civil service or schooling, is potentially achievable (with whatever difficulty), but that this must be complemented by authentic contemporary intellectual work published in African languages if the linguistic dimension of the African Renaissance is to take off.
- Full Text:
- Date Issued: 2004
- Authors: Wright, Laurence
- Date: 2004
- Language: English
- Type: text , article
- Identifier: vital:7042 , http://hdl.handle.net/10962/d1007383 , https://doi.org/10.1075/lplp.28.2.05wri
- Description: preprint , Language policy debate is often obscured by two factors: failure to acknowledge different time-frames attending contrasting positions, and failure to recognise that ordinary people are motivated by their perceived best interests in the present. This article argues that the key to more general public acceptance of linguistic ecological diversity in South Africa is to shift the emphasis from policy development to practical language cultivation issues. Provide the requisite cultivation support, and acceptance of a revitalised future for African languages becomes more assured. It should also be understood that the modernisation of African languages in South Africa has a political dimension concerning which South African language commentators are strangely silent. This political thrust may not be entirely congruent with the concerns of those whose brief for African languages is primarily cultural or ecological – if, indeed, they are even aware of it. Finally, it needs to be recognised that language development under conditions of controlled influence, as in the civil service or schooling, is potentially achievable (with whatever difficulty), but that this must be complemented by authentic contemporary intellectual work published in African languages if the linguistic dimension of the African Renaissance is to take off.
- Full Text:
- Date Issued: 2004
A conceptual framework for the e-enabling of automotive supply chanins
- Authors: Cameron, Hilton John
- Date: 2004
- Subjects: Electronic commerce , Business logistics
- Language: English
- Type: Thesis , Masters , MTech (Information Technology)
- Identifier: vital:10791 , http://hdl.handle.net/10948/209 , Electronic commerce , Business logistics
- Description: Supply chains encompass all of the diverse activities that are associated with the flow and transformation of goods, right from the beginning stage of the raw materials, all the way through to the consumer. Supply chains are broken into three distinct parts, namely upstream activities involving the material and service inputs from suppliers, internal activities involving the manufacture and packaging of the goods, and downstream activities, which involve the distribution and sale of the goods. Since the inception of the automotive industry, buyers and suppliers have been linked in rigid, inflexible relationships. With the advent of the Internet, however, supply chains are becoming less rigid and more efficient. E-enabling an automotive supply chain involves two distinct spheres of interest, namely, the sphere of automotive supply chains and that of e-business. Both spheres are evolving fast and becoming increasingly complex. Due to the increasing complexity, there is a lack of understanding with regard to incorporating e-business principles effectively into automotive supply chains. In order to address this lack of understanding, the dissertation proposes a conceptual framework that can be used to assist in the process of e-enabling an automotive supply chain. Before the dissertation ventures to propose this conceptual framework, a number of challenges that may be encountered when attempting to enable an automotive supply chain are highlighted. The proposed framework, therefore, specifically aims to position activities conceptually in such a way that it can be argued that the identified challenges are considered at the appropriate time in the e-enabling process. The framework therefore, focuses on the entire process, starting at the planning phase and going right through to the implementation phase. As such, the framework consists of various phases, with each phase containing a myriad of activities. The different phases of the framework include developing a strategic business plan, designing an information technology architecture, identifying system and resource requirements, creating a project plan and finally implementing the project. These phases aim to address the entire e-enabling process. The contribution that this dissertation makes is in the form of a conceptual framework which may be followed during the e-enabling process. The framework aims to provide direction and to ensure that the many activities that are involved in the e-enabling process are considered. The dissertation also highlights the many challenges that may be encountered when enabling a supply chain. Lastly a prototype application has been developed using a new Internet technology. The prototype has been developed in order to ascertain the new technologies suitability to the e-enabled supply chain environment.
- Full Text:
- Date Issued: 2004
- Authors: Cameron, Hilton John
- Date: 2004
- Subjects: Electronic commerce , Business logistics
- Language: English
- Type: Thesis , Masters , MTech (Information Technology)
- Identifier: vital:10791 , http://hdl.handle.net/10948/209 , Electronic commerce , Business logistics
- Description: Supply chains encompass all of the diverse activities that are associated with the flow and transformation of goods, right from the beginning stage of the raw materials, all the way through to the consumer. Supply chains are broken into three distinct parts, namely upstream activities involving the material and service inputs from suppliers, internal activities involving the manufacture and packaging of the goods, and downstream activities, which involve the distribution and sale of the goods. Since the inception of the automotive industry, buyers and suppliers have been linked in rigid, inflexible relationships. With the advent of the Internet, however, supply chains are becoming less rigid and more efficient. E-enabling an automotive supply chain involves two distinct spheres of interest, namely, the sphere of automotive supply chains and that of e-business. Both spheres are evolving fast and becoming increasingly complex. Due to the increasing complexity, there is a lack of understanding with regard to incorporating e-business principles effectively into automotive supply chains. In order to address this lack of understanding, the dissertation proposes a conceptual framework that can be used to assist in the process of e-enabling an automotive supply chain. Before the dissertation ventures to propose this conceptual framework, a number of challenges that may be encountered when attempting to enable an automotive supply chain are highlighted. The proposed framework, therefore, specifically aims to position activities conceptually in such a way that it can be argued that the identified challenges are considered at the appropriate time in the e-enabling process. The framework therefore, focuses on the entire process, starting at the planning phase and going right through to the implementation phase. As such, the framework consists of various phases, with each phase containing a myriad of activities. The different phases of the framework include developing a strategic business plan, designing an information technology architecture, identifying system and resource requirements, creating a project plan and finally implementing the project. These phases aim to address the entire e-enabling process. The contribution that this dissertation makes is in the form of a conceptual framework which may be followed during the e-enabling process. The framework aims to provide direction and to ensure that the many activities that are involved in the e-enabling process are considered. The dissertation also highlights the many challenges that may be encountered when enabling a supply chain. Lastly a prototype application has been developed using a new Internet technology. The prototype has been developed in order to ascertain the new technologies suitability to the e-enabled supply chain environment.
- Full Text:
- Date Issued: 2004
Design and implementation of robotic control for industrial applications
- Authors: Will, Desmond Jeffrey
- Date: 2004
- Subjects: Robotics
- Language: English
- Type: Thesis , Masters , MTech (Electrical Engineering)
- Identifier: vital:10819 , http://hdl.handle.net/10948/213 , Robotics
- Description: Background: With the pressing need for increased productivity and delivery of end products of uniform quality, industry is turning more and more to computer-based automation. At the present time, most of industrial automated manufacturing is carried out by specialpurpose machines, designed to perform specific functions in a manufacturing process. The inflexibility and generally high cost of these machines often referred to as hard automation systems, have led to a broad-based interest in the use of robots capable of performing a variety of manufacturing functions in a more flexible working environment and at lower production costs. A robot is a reprogrammable general-purpose manipulator with external sensors that can perform various assembly tasks. A robot may possess intelligence, which is normally due to computer algorithms associated with its controls and sensing systems. Industrial robots are general-purpose, computer-controlled manipulators consisting of several rigid links connected in series by revolute or prismatic joints. Most of today’s industrial robots, though controlled by mini and microcomputers are basically simple positional machines. They execute a given task by playing back a prerecorded or preprogrammed sequence of motion that has been previously guided or taught by the hand-held control teach box. Moreover, these robots are equipped with little or no external sensors for obtaining the information vital to its working environment. As a result robots are used mainly for relatively simple, repetitive tasks. More research effort has been directed in sensory feedback systems, which has resulted in improving the overall performance of the manipulator system. An example of a sensory feedback system would be: a vision Charge-Coupled Device (CCD) system. This can be utilized to manipulate the robot position dependant on the surrounding robot environment (various object profile sizes). This vision system can only be used within the robot movement envelope
- Full Text:
- Date Issued: 2004
- Authors: Will, Desmond Jeffrey
- Date: 2004
- Subjects: Robotics
- Language: English
- Type: Thesis , Masters , MTech (Electrical Engineering)
- Identifier: vital:10819 , http://hdl.handle.net/10948/213 , Robotics
- Description: Background: With the pressing need for increased productivity and delivery of end products of uniform quality, industry is turning more and more to computer-based automation. At the present time, most of industrial automated manufacturing is carried out by specialpurpose machines, designed to perform specific functions in a manufacturing process. The inflexibility and generally high cost of these machines often referred to as hard automation systems, have led to a broad-based interest in the use of robots capable of performing a variety of manufacturing functions in a more flexible working environment and at lower production costs. A robot is a reprogrammable general-purpose manipulator with external sensors that can perform various assembly tasks. A robot may possess intelligence, which is normally due to computer algorithms associated with its controls and sensing systems. Industrial robots are general-purpose, computer-controlled manipulators consisting of several rigid links connected in series by revolute or prismatic joints. Most of today’s industrial robots, though controlled by mini and microcomputers are basically simple positional machines. They execute a given task by playing back a prerecorded or preprogrammed sequence of motion that has been previously guided or taught by the hand-held control teach box. Moreover, these robots are equipped with little or no external sensors for obtaining the information vital to its working environment. As a result robots are used mainly for relatively simple, repetitive tasks. More research effort has been directed in sensory feedback systems, which has resulted in improving the overall performance of the manipulator system. An example of a sensory feedback system would be: a vision Charge-Coupled Device (CCD) system. This can be utilized to manipulate the robot position dependant on the surrounding robot environment (various object profile sizes). This vision system can only be used within the robot movement envelope
- Full Text:
- Date Issued: 2004
The unfair labour practice relating to promotion
- Authors: Abrahams, Dawood
- Date: 2004
- Subjects: Unfair labor practices -- South Africa , Promotions -- South Africa , Labor laws and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:11035 , http://hdl.handle.net/10948/329 , Unfair labor practices -- South Africa , Promotions -- South Africa , Labor laws and legislation -- South Africa
- Description: This article deals with the South African law relating to promotions. As promotion disputes mostly arise as alleged unfair labour practices, a short discussion on how the concept of an unfair labour practice developed in South Africa is undertaken. In this regard the common law is studied in order to see whether it makes provision for protection of employees subjected to unfair labour practices relating to promotions. Through this study one soon realises that the common law is in fact inadequate to deal with unfair labour practices relating to promotions, and thus an enquiry into various legislative provisions are undertaken. The impact of the all-important Wiehahn Commission of Enquiry, established in 1979, is also briefly discussed. In this article an attempt is made to define the term ‘promotion’. In this regard reference is made to some cases adjudicated upon by the Commission for Conciliation Mediation and Arbitration (the “CCMA”). The cases referred to seem to favour the view that when one is defining the term ‘promotion’, regard must be had to the employment relationship between the employer and the employee, as well as the nature of the employee’s current work in relation to the work applied for, in order to establish whether in fact a promotion has taken place. It is necessary to consider what unfair conduct is defined as in the context of promotions. It seems that managerial prerogative is at the center of the enquiry into unfair conduct of the employer. Further to the analysis of unfair conduct, various principles that govern both procedural and substantive unfairness are considered. These principles are dealt with separately with reference to case law. Lastly the dispute resolution mechanisms are considered and a brief discussion on remedies is undertaken. The remedies are discussed with reference to case law, as well as the provisions of the Labour Relations Act 66 of 1995 as amended by the Labour Relations Amendment Act 12 of 2002. The broad headings of this article are accordingly unfair labour practices, definition of promotions, unfair conduct of the employer, onus of proof and remedies. It is concluded with the proposition that once an employer has set policies and procedures in place in dealing with promotions, then such an employer should stick to those policies and procedures within the context of the law, as well as within the percepts of the vague and nebulous term of ‘fairness’. Should the employer fail to do so, the majority of cases indicate that such an employer will be guilty of an unfair labour practice relating to promotion.
- Full Text:
- Date Issued: 2004
- Authors: Abrahams, Dawood
- Date: 2004
- Subjects: Unfair labor practices -- South Africa , Promotions -- South Africa , Labor laws and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:11035 , http://hdl.handle.net/10948/329 , Unfair labor practices -- South Africa , Promotions -- South Africa , Labor laws and legislation -- South Africa
- Description: This article deals with the South African law relating to promotions. As promotion disputes mostly arise as alleged unfair labour practices, a short discussion on how the concept of an unfair labour practice developed in South Africa is undertaken. In this regard the common law is studied in order to see whether it makes provision for protection of employees subjected to unfair labour practices relating to promotions. Through this study one soon realises that the common law is in fact inadequate to deal with unfair labour practices relating to promotions, and thus an enquiry into various legislative provisions are undertaken. The impact of the all-important Wiehahn Commission of Enquiry, established in 1979, is also briefly discussed. In this article an attempt is made to define the term ‘promotion’. In this regard reference is made to some cases adjudicated upon by the Commission for Conciliation Mediation and Arbitration (the “CCMA”). The cases referred to seem to favour the view that when one is defining the term ‘promotion’, regard must be had to the employment relationship between the employer and the employee, as well as the nature of the employee’s current work in relation to the work applied for, in order to establish whether in fact a promotion has taken place. It is necessary to consider what unfair conduct is defined as in the context of promotions. It seems that managerial prerogative is at the center of the enquiry into unfair conduct of the employer. Further to the analysis of unfair conduct, various principles that govern both procedural and substantive unfairness are considered. These principles are dealt with separately with reference to case law. Lastly the dispute resolution mechanisms are considered and a brief discussion on remedies is undertaken. The remedies are discussed with reference to case law, as well as the provisions of the Labour Relations Act 66 of 1995 as amended by the Labour Relations Amendment Act 12 of 2002. The broad headings of this article are accordingly unfair labour practices, definition of promotions, unfair conduct of the employer, onus of proof and remedies. It is concluded with the proposition that once an employer has set policies and procedures in place in dealing with promotions, then such an employer should stick to those policies and procedures within the context of the law, as well as within the percepts of the vague and nebulous term of ‘fairness’. Should the employer fail to do so, the majority of cases indicate that such an employer will be guilty of an unfair labour practice relating to promotion.
- Full Text:
- Date Issued: 2004
Jah children the experience of Rastafari children in South Africa as members of a minority group with particular reference to communities in the former Cape Province
- Authors: Bain, Pauline
- Date: 2004
- Subjects: Rastafari movement -- South Africa -- Eastern Cape , Rastafari movement -- South Africa -- Western Cape , Rastafari movement -- South Africa -- Northern Cape , Reggae music -- South Africa -- History and criticism , Rastafarian ethics -- South Africa , Rastafari movement -- Doctrines , Children of minorities -- South Africa -- Education , Socialization -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2087 , http://hdl.handle.net/10962/d1002650 , Rastafari movement -- South Africa -- Eastern Cape , Rastafari movement -- South Africa -- Western Cape , Rastafari movement -- South Africa -- Northern Cape , Reggae music -- South Africa -- History and criticism , Rastafarian ethics -- South Africa , Rastafari movement -- Doctrines , Children of minorities -- South Africa -- Education , Socialization -- South Africa
- Description: This thesis is an ethnography of Rastafari childhood in the former Cape Province, South Africa, through the eyes of both parents and children. If children are a ‘muted group’, then what are the identity formation implications for “double-muted” groups, the children of ethnic minorities whose voices are not heard? Rasta parents’ experience of the struggle, ie. the opposition to apartheid, has shaped the Rastafari chant of ‘equal rights’ and ‘justice’ into a distinctly South African form of protest and resistance. Their childhood experiences have resulted in a desire to provide a better life for their children, using Rastafari as a vehicle. This is expressed in a continuation of the struggle that was started during apartheid, in the Rasta ideology children grow up learning. The Rasta child has become a contested body in this struggle. The South African Government, through policy, has a mandate to protect the child, and legislature exists to do so in accordance with international law. However, as child-raising differs phenomenally from culture to culture, these goals on the part of the State start infringing upon the rights and freedoms of minorities to raise their children according to their own cultural goals. This study examines the tension between Rastafari and government with regards to child raising, specifically looking at the following main points of contestation: public health, public schools and policy/legislation; in order to examine how Rasta children negotiate their identity in the face of these conflicting messages and struggles. Their identity can be influenced by three main groups, the Rasta family they grow up in; school; and multi-media. What these children choose to accept or reject in their worldview is moderated by their own agency. This study shows that this tension results in a new generation of Rastafari children, who are strongly grounded in an identity as Rastafari and take pride in this identity. It also illustrates how Rastafari are impacting on and changing government policy through resistance. Their successes in challenging the state on the grounds of multiculturalism and religious freedom, has helped in the attainment of a sense of dignity.
- Full Text:
- Date Issued: 2004
- Authors: Bain, Pauline
- Date: 2004
- Subjects: Rastafari movement -- South Africa -- Eastern Cape , Rastafari movement -- South Africa -- Western Cape , Rastafari movement -- South Africa -- Northern Cape , Reggae music -- South Africa -- History and criticism , Rastafarian ethics -- South Africa , Rastafari movement -- Doctrines , Children of minorities -- South Africa -- Education , Socialization -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2087 , http://hdl.handle.net/10962/d1002650 , Rastafari movement -- South Africa -- Eastern Cape , Rastafari movement -- South Africa -- Western Cape , Rastafari movement -- South Africa -- Northern Cape , Reggae music -- South Africa -- History and criticism , Rastafarian ethics -- South Africa , Rastafari movement -- Doctrines , Children of minorities -- South Africa -- Education , Socialization -- South Africa
- Description: This thesis is an ethnography of Rastafari childhood in the former Cape Province, South Africa, through the eyes of both parents and children. If children are a ‘muted group’, then what are the identity formation implications for “double-muted” groups, the children of ethnic minorities whose voices are not heard? Rasta parents’ experience of the struggle, ie. the opposition to apartheid, has shaped the Rastafari chant of ‘equal rights’ and ‘justice’ into a distinctly South African form of protest and resistance. Their childhood experiences have resulted in a desire to provide a better life for their children, using Rastafari as a vehicle. This is expressed in a continuation of the struggle that was started during apartheid, in the Rasta ideology children grow up learning. The Rasta child has become a contested body in this struggle. The South African Government, through policy, has a mandate to protect the child, and legislature exists to do so in accordance with international law. However, as child-raising differs phenomenally from culture to culture, these goals on the part of the State start infringing upon the rights and freedoms of minorities to raise their children according to their own cultural goals. This study examines the tension between Rastafari and government with regards to child raising, specifically looking at the following main points of contestation: public health, public schools and policy/legislation; in order to examine how Rasta children negotiate their identity in the face of these conflicting messages and struggles. Their identity can be influenced by three main groups, the Rasta family they grow up in; school; and multi-media. What these children choose to accept or reject in their worldview is moderated by their own agency. This study shows that this tension results in a new generation of Rastafari children, who are strongly grounded in an identity as Rastafari and take pride in this identity. It also illustrates how Rastafari are impacting on and changing government policy through resistance. Their successes in challenging the state on the grounds of multiculturalism and religious freedom, has helped in the attainment of a sense of dignity.
- Full Text:
- Date Issued: 2004