Physiological and non-physiological induction of gastrointestinal differentiation
- Authors: Brauns, Seth Clint Aron
- Date: 1999
- Subjects: Gastrointestinal system -- Differentiation , Gastrointestinal system -- Physiology
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:11089 , http://hdl.handle.net/10948/d1015521
- Description: The human colonic carcinoma cell lines HT-29 and Caco-2 both exhibit structural and functional differentiation under appropriate culture conditions. HT-29 can be induced to differentiate by treatment with short-chain fatty acids or acetoacetate. Caco-2 cells differentiate spontaneously upon contact inhibition. In this study HT-29 cells were treated with 5 mM acetate, propionate, butyrate and acetoacetate (physiological inducers) to assess their effects on the expression of carbonic anhydrase 1, sucrase-isomaltase and alkaline phosphatase which are reported to be markers of gastrointestinal differentiation. The maturation induction observed was compared to that of the spontaneous differentiation observed in Caco-2 cells. Assays were performed over an 18 day period. Results showed a close correlation (p < 0.05) between HT-29 and Caco-2 cell on days 4 and 12. These results indicate that differentiation reported in both cell lines is comparable and can be used as a basis for further comparative studies. In addition, parallel experiments to the above were conducted using a selection of nine rationally designed cyclic dipeptides (CDPs) potential drug entities which were chosen as non-physiological inducers. The results showed that the cyclic dipeptides were able to induce the gastrointestinal phenotype as observed in HT-29 cells treated with physiological inducers. Studies on the effects of energy-related metabolism in HT-29 and Caco-2 cells as induced by physiological and non-physiological inducers indicated that energy metabolism is a significant role player in gastrointestinal differentiation. The results reported show a decrease in ATP concentrations indicating that the cyclic dipeptides, like physiological inducers, affect the energy state of the HT-29 cells and thus may effect the differentiation of these cells. A positive correlation was found between histone phsophorylation and differentiation confirming that histone phsophorylation was partly responsible for the decrease in ATP concentrations. It is suggested that the induction of differentiation in HT- 29 cells could be either due to non-specific transcription of genes by activation of a chromatin switch or specific by the activation of signal transduction pathways based on the flux of ATP through the cells. Differential display RT-PCR is probably the most sensitive method that could be used to validate the suggestion of either a nonspecific transcription of genes or a specific differentiation reported for HT-29 cells.
- Full Text:
- Date Issued: 1999
- Authors: Brauns, Seth Clint Aron
- Date: 1999
- Subjects: Gastrointestinal system -- Differentiation , Gastrointestinal system -- Physiology
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:11089 , http://hdl.handle.net/10948/d1015521
- Description: The human colonic carcinoma cell lines HT-29 and Caco-2 both exhibit structural and functional differentiation under appropriate culture conditions. HT-29 can be induced to differentiate by treatment with short-chain fatty acids or acetoacetate. Caco-2 cells differentiate spontaneously upon contact inhibition. In this study HT-29 cells were treated with 5 mM acetate, propionate, butyrate and acetoacetate (physiological inducers) to assess their effects on the expression of carbonic anhydrase 1, sucrase-isomaltase and alkaline phosphatase which are reported to be markers of gastrointestinal differentiation. The maturation induction observed was compared to that of the spontaneous differentiation observed in Caco-2 cells. Assays were performed over an 18 day period. Results showed a close correlation (p < 0.05) between HT-29 and Caco-2 cell on days 4 and 12. These results indicate that differentiation reported in both cell lines is comparable and can be used as a basis for further comparative studies. In addition, parallel experiments to the above were conducted using a selection of nine rationally designed cyclic dipeptides (CDPs) potential drug entities which were chosen as non-physiological inducers. The results showed that the cyclic dipeptides were able to induce the gastrointestinal phenotype as observed in HT-29 cells treated with physiological inducers. Studies on the effects of energy-related metabolism in HT-29 and Caco-2 cells as induced by physiological and non-physiological inducers indicated that energy metabolism is a significant role player in gastrointestinal differentiation. The results reported show a decrease in ATP concentrations indicating that the cyclic dipeptides, like physiological inducers, affect the energy state of the HT-29 cells and thus may effect the differentiation of these cells. A positive correlation was found between histone phsophorylation and differentiation confirming that histone phsophorylation was partly responsible for the decrease in ATP concentrations. It is suggested that the induction of differentiation in HT- 29 cells could be either due to non-specific transcription of genes by activation of a chromatin switch or specific by the activation of signal transduction pathways based on the flux of ATP through the cells. Differential display RT-PCR is probably the most sensitive method that could be used to validate the suggestion of either a nonspecific transcription of genes or a specific differentiation reported for HT-29 cells.
- Full Text:
- Date Issued: 1999
Population dynamics and growth rates of the brown mussel (Perna perna) on wave exposed and wave sheltered shores of South Africa
- Authors: Lindsay, Tracy Lynn
- Date: 1999
- Subjects: Perna -- South Africa , Mussels -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5741 , http://hdl.handle.net/10962/d1005427 , Perna -- South Africa , Mussels -- South Africa
- Description:
Population dynamics of Perna perna in low shore mussel beds were investigated over a 15 month period at six sites along the south coast of South Africa, with particular reference to the effects of wave exposure. The degree of exposure was first quantitatively ascertained using the dissolution of cement blocks to measure average wave force and dynamometers to measure maximum wave force. The mean mass loss of the cement blocks was higher at Diaz Cross and Kwaai Hoek than at Mgwalana, Rufanes and Riet River. No data were available for Fish River. The mean maximum wave force encountered at Diaz Cross, Kwaai Hoek and Fish River was significantly higher (p
- Full Text:
- Date Issued: 1999
- Authors: Lindsay, Tracy Lynn
- Date: 1999
- Subjects: Perna -- South Africa , Mussels -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5741 , http://hdl.handle.net/10962/d1005427 , Perna -- South Africa , Mussels -- South Africa
- Description:
Population dynamics of Perna perna in low shore mussel beds were investigated over a 15 month period at six sites along the south coast of South Africa, with particular reference to the effects of wave exposure. The degree of exposure was first quantitatively ascertained using the dissolution of cement blocks to measure average wave force and dynamometers to measure maximum wave force. The mean mass loss of the cement blocks was higher at Diaz Cross and Kwaai Hoek than at Mgwalana, Rufanes and Riet River. No data were available for Fish River. The mean maximum wave force encountered at Diaz Cross, Kwaai Hoek and Fish River was significantly higher (p
- Full Text:
- Date Issued: 1999
Postconcussive sequelae in contact sport : rugby versus non-contact sport controls
- Authors: Dickinson, Arlene
- Date: 1999
- Subjects: Head -- Wounds and injuries -- Psychology Brain -- Concussion -- Complications Sports injuries
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2381 , http://hdl.handle.net/10962/d1008455
- Description: The effects of repeated mild concussive head injury on professional rugby players were examined. Data were collected for rugby players (n=26) and cricket player controls (n=21) using a comprehensive neuropsychological test battery comprising five modalities (Verbal Memory, Visual Memory, Verbal Fluency, Visuoperceptual Tracking and Hand Motor Dexterity) and a self-report Postconcussive Symptomology Questionnaire. Group statistical comparisons of the percentage of individuals with deficit were carried out for (i) rugby versus cricket; (ii) rugby forwards versus rugby backs; and (iii) rugby forwards versus cricket. Rugby players performed significantly poorer than controls on SA W AIS Digit Symbol Substitution subtest and on the Trail Making Test. On Digits Forward and Digit Symbol Incidental Recall, the results approached significance with the rugby players showing a tendency toward impairment on these tests. Rugby players exhibited impairment in areas of visuoperceptual tracking, speed of information processing and attention, and there are tendencies of impairment in verbal and/or visual memory. Results obtained on the self-report questionnaire strongly reinforced cognitive test results and a significant proportion of rugby players reported difficulties with sustained attention, memory and lowered frustration tolerance as well as symptoms of anxiety and depression. It was consistently noted that players in the more full contact positions (rugby forwards) were most susceptible to impairment, confirming that these players, who are exposed to repeated mild head injuries, are at greater risk of exhibiting postconcussive sequelae.
- Full Text:
- Date Issued: 1999
- Authors: Dickinson, Arlene
- Date: 1999
- Subjects: Head -- Wounds and injuries -- Psychology Brain -- Concussion -- Complications Sports injuries
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2381 , http://hdl.handle.net/10962/d1008455
- Description: The effects of repeated mild concussive head injury on professional rugby players were examined. Data were collected for rugby players (n=26) and cricket player controls (n=21) using a comprehensive neuropsychological test battery comprising five modalities (Verbal Memory, Visual Memory, Verbal Fluency, Visuoperceptual Tracking and Hand Motor Dexterity) and a self-report Postconcussive Symptomology Questionnaire. Group statistical comparisons of the percentage of individuals with deficit were carried out for (i) rugby versus cricket; (ii) rugby forwards versus rugby backs; and (iii) rugby forwards versus cricket. Rugby players performed significantly poorer than controls on SA W AIS Digit Symbol Substitution subtest and on the Trail Making Test. On Digits Forward and Digit Symbol Incidental Recall, the results approached significance with the rugby players showing a tendency toward impairment on these tests. Rugby players exhibited impairment in areas of visuoperceptual tracking, speed of information processing and attention, and there are tendencies of impairment in verbal and/or visual memory. Results obtained on the self-report questionnaire strongly reinforced cognitive test results and a significant proportion of rugby players reported difficulties with sustained attention, memory and lowered frustration tolerance as well as symptoms of anxiety and depression. It was consistently noted that players in the more full contact positions (rugby forwards) were most susceptible to impairment, confirming that these players, who are exposed to repeated mild head injuries, are at greater risk of exhibiting postconcussive sequelae.
- Full Text:
- Date Issued: 1999
Printmaking at the Dakawa Art and Craft Project : the impact of ANC cultural policy and Swedish practical implementation on two printmakers trained during South Africa's transformation years
- Authors: Baillie, Giselle Katherine
- Date: 1999
- Subjects: Prints -- Technique Dakawa art and craft project Printmakers -- South Africa -- Grahamstown Prints -- Technique -- Study and teaching
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2394 , http://hdl.handle.net/10962/d1002190
- Description: In 1998, the national Department of Arts, Culture, Science and Technology published a document aimed at the growth of culture industries in South Africa (DACST, "Creative South Africa", July 1998). Focussing on aspects of economic growth which this development could generate for South Africa, it nonetheless points to issues of cultural understanding which need to be addressed. Projects aimed at the development of arts and culture in South Africa have followed troubled paths. While projects aimed at establishing discourse for this development have succeeded on many levels, the imperatives of showcasing, rather than implementing cultural concepts appropriate to South African contexts, have tended to dominate. When the Dakawa Art and Craft Project was established by the ANC, in 1992, in Grahamstown, as the locus for the deve! opment of an arts and culture discourse in the liberated South Africa, all seemed set for success. Yet, less than four years after opening, the Project was closed. While speculatory reasons for closure tended to focus on financial and administrative problems, the basis for this closure had its roots in problems of cultural understanding manifesting themselves at the Project. These reflected a lack of cultural understanding on the part of the ANC and SIDA, the Swedish administrators sent to the Project, and the lack of clear cultural guidelines on the part of the trainees to the Project itself. These reasons for the Project's failure are integral to an understanding of arts add culture development and needs in South Africa today. As other projects, aimed at the same issues of development grow, an understanding of the history of the Project's failure is essential, for it poses questions still in need of answers. Part One examines the historical significance of the Dakawa Art and Craft Project between 1982 and 1994, recording the reasons for its establishment, the path of implementation it followed, and the cultural misunderstandings it posed to development. Part Two examines the cultural context of the trainees to the Project, followed by an account of the printmaking teaching practice, and the effects of cultural concepts on two printmakers trained during the Project's initial establishment, at the time of South Africa's political transformation.
- Full Text:
- Date Issued: 1999
- Authors: Baillie, Giselle Katherine
- Date: 1999
- Subjects: Prints -- Technique Dakawa art and craft project Printmakers -- South Africa -- Grahamstown Prints -- Technique -- Study and teaching
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2394 , http://hdl.handle.net/10962/d1002190
- Description: In 1998, the national Department of Arts, Culture, Science and Technology published a document aimed at the growth of culture industries in South Africa (DACST, "Creative South Africa", July 1998). Focussing on aspects of economic growth which this development could generate for South Africa, it nonetheless points to issues of cultural understanding which need to be addressed. Projects aimed at the development of arts and culture in South Africa have followed troubled paths. While projects aimed at establishing discourse for this development have succeeded on many levels, the imperatives of showcasing, rather than implementing cultural concepts appropriate to South African contexts, have tended to dominate. When the Dakawa Art and Craft Project was established by the ANC, in 1992, in Grahamstown, as the locus for the deve! opment of an arts and culture discourse in the liberated South Africa, all seemed set for success. Yet, less than four years after opening, the Project was closed. While speculatory reasons for closure tended to focus on financial and administrative problems, the basis for this closure had its roots in problems of cultural understanding manifesting themselves at the Project. These reflected a lack of cultural understanding on the part of the ANC and SIDA, the Swedish administrators sent to the Project, and the lack of clear cultural guidelines on the part of the trainees to the Project itself. These reasons for the Project's failure are integral to an understanding of arts add culture development and needs in South Africa today. As other projects, aimed at the same issues of development grow, an understanding of the history of the Project's failure is essential, for it poses questions still in need of answers. Part One examines the historical significance of the Dakawa Art and Craft Project between 1982 and 1994, recording the reasons for its establishment, the path of implementation it followed, and the cultural misunderstandings it posed to development. Part Two examines the cultural context of the trainees to the Project, followed by an account of the printmaking teaching practice, and the effects of cultural concepts on two printmakers trained during the Project's initial establishment, at the time of South Africa's political transformation.
- Full Text:
- Date Issued: 1999
Promoting learning in science: a case study of the appropriateness and implications of group work
- Authors: Ngcoza, Kenneth Mlungisi
- Date: 1999
- Subjects: Group work in education Science -- Study and teaching (Secondary) -- South Africa Museums and schools -- South Africa Albany Museum (Grahamstown, South Africa)
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1718 , http://hdl.handle.net/10962/d1003601
- Description: This research project, using a qualitative case study methodology, reports on the appropriateness and implications of using group work in promoting cooperative learning in science. In this study, group work is seen as providing a social support mechanism for learning through interactive "hands-on" activities, designed to give learners opportunities to discuss and share ideas so that they can grasp science concepts. The Science Olympiad Project class composed of approximately thirty-six (36) learners formed the case study for this unit. The Science Olympiad Project is a project concerned with the promotion of science in the primary schools in Grahamstown. From this group, twenty two (22) learners (12 girls and 10 boys) were interviewed and kept journals. The Science Olympiad facilitator (a science teacher from one of the schools involved in the project) and two teachers who attended the science classes and whose learners are part of the project were interviewed. Semi-structured interviews, journals kept by the learners and the researcher (who was a participant observer and a co-facilitator), observations and discussions constituted sources of data for the research project. The analysis of data indicated that the learners found science during the Science Olympiad Project classes interesting and challenging. There were many benefits reported by the learners including the use of group work, the effect of "hands-on" activities, their attitudes and perceptions towards science and the role of excursions. Teachers found the learner-centred approaches adopted helped to encourage the learners to be actively involved in their own learning. One concern raised by the teachers was what would happen to those learners who have been identified as enthusiastic in science when they go to secondary schools. The implications of the results to improve and sustain the project are discussed.
- Full Text:
- Date Issued: 1999
- Authors: Ngcoza, Kenneth Mlungisi
- Date: 1999
- Subjects: Group work in education Science -- Study and teaching (Secondary) -- South Africa Museums and schools -- South Africa Albany Museum (Grahamstown, South Africa)
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1718 , http://hdl.handle.net/10962/d1003601
- Description: This research project, using a qualitative case study methodology, reports on the appropriateness and implications of using group work in promoting cooperative learning in science. In this study, group work is seen as providing a social support mechanism for learning through interactive "hands-on" activities, designed to give learners opportunities to discuss and share ideas so that they can grasp science concepts. The Science Olympiad Project class composed of approximately thirty-six (36) learners formed the case study for this unit. The Science Olympiad Project is a project concerned with the promotion of science in the primary schools in Grahamstown. From this group, twenty two (22) learners (12 girls and 10 boys) were interviewed and kept journals. The Science Olympiad facilitator (a science teacher from one of the schools involved in the project) and two teachers who attended the science classes and whose learners are part of the project were interviewed. Semi-structured interviews, journals kept by the learners and the researcher (who was a participant observer and a co-facilitator), observations and discussions constituted sources of data for the research project. The analysis of data indicated that the learners found science during the Science Olympiad Project classes interesting and challenging. There were many benefits reported by the learners including the use of group work, the effect of "hands-on" activities, their attitudes and perceptions towards science and the role of excursions. Teachers found the learner-centred approaches adopted helped to encourage the learners to be actively involved in their own learning. One concern raised by the teachers was what would happen to those learners who have been identified as enthusiastic in science when they go to secondary schools. The implications of the results to improve and sustain the project are discussed.
- Full Text:
- Date Issued: 1999
Protectionism and compliance with the GATT article XXIV in selected regional trade arrangements
- Authors: Grimett, Leticia Anthea
- Date: 1999
- Subjects: General Agreement on Tariffs and Trade (Organization) , International trade , Tariff -- Law and legislation , Protectionism , Free trade -- South Africa , South Africa -- Commerce
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:3673 , http://hdl.handle.net/10962/d1003188 , General Agreement on Tariffs and Trade (Organization) , International trade , Tariff -- Law and legislation , Protectionism , Free trade -- South Africa , South Africa -- Commerce
- Description: The General Agreement on Tariffs and Trade (GATT) 1994 has resulted in the GATT Contracting States making a renewed commitment to freer global trade and trade liberalisation. These Contracting States signalled their commitment to GATT policies and principles by undertaking to abolish all those non-tariff barriers which were not converted to tariffs and to decrease all tariffs applied by their domestic economies. The movement away from protectionism is intended to bring contracting states in line with the GATT most-favoured-nation and national treatment principles. The only exceptions to these principles are the regional trade arrangements which can be implemented in accordance with Article XXIV of GATT 1947 and the Understanding on the Implementation of Article XXIV of GATT 1947. Regional trade arrangements such as customs unions and free-trade areas have been allowed by the GATT as they are deemed to promote trade liberalisation through the removal of substantially all trade restrictions between countries party to these trade arrangements. In practice this has not been the case, however, as these regional trade arrangements have been known to apply very protectionist trade policies. This research determines whether regional trade arrangements are inherently protective ie does the nature of these regional trade arrangements encourage protectionism? The external trade policies of the European Union (EU), Association of Southeast Asian Nations (ASEAN), Southern African Development Community (SADC) and the Southern African Customs Union (SACU) are analysed to determine whether the contracting parties to regional trade arrangements have corrupted the GATT provisions and so contributed towards the protectionist nature of these regional trade arrangements. The internal trade provisions relating to the implementation of these regional trade arrangements have also been discussed to determine their compliance with Article XXIV of GATT 1947. As all the selected regional trade arrangements have direct or indirect links to South Africa, the implications of the policies chosen by these parties for South Africa have also been discussed. Analysis of the EU, SADC, SACU and ASEAN has shown that prior to the adoption of the GATT 1994, the free-trade areas and customs unions were not implemented in accordance with Article XXIV provisions. These regional trade arrangements have been moulded to fit the economic aspirations of the relevant contracting states. Of the regional trade arrangements accepted by the GATT, free-trade areas have been found to be the least protectionist and are the least likely to be perverted by contracting parties. Customs unions, on the other hand, may encourage contracting parties to protect their economies as they rely on group participation rather than individual participation. Individual Member States become responsible to the group which provides these states with greater economic power. As a result Member States are motivated to protect the new group entity from outside competition. In this way, they are inherently protective. Safeguards are therefore necessary to protect individual non-Member States from such behaviour. The implications of protectionism for South Africa, SADC and SACU have also been discussed.
- Full Text:
- Date Issued: 1999
- Authors: Grimett, Leticia Anthea
- Date: 1999
- Subjects: General Agreement on Tariffs and Trade (Organization) , International trade , Tariff -- Law and legislation , Protectionism , Free trade -- South Africa , South Africa -- Commerce
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:3673 , http://hdl.handle.net/10962/d1003188 , General Agreement on Tariffs and Trade (Organization) , International trade , Tariff -- Law and legislation , Protectionism , Free trade -- South Africa , South Africa -- Commerce
- Description: The General Agreement on Tariffs and Trade (GATT) 1994 has resulted in the GATT Contracting States making a renewed commitment to freer global trade and trade liberalisation. These Contracting States signalled their commitment to GATT policies and principles by undertaking to abolish all those non-tariff barriers which were not converted to tariffs and to decrease all tariffs applied by their domestic economies. The movement away from protectionism is intended to bring contracting states in line with the GATT most-favoured-nation and national treatment principles. The only exceptions to these principles are the regional trade arrangements which can be implemented in accordance with Article XXIV of GATT 1947 and the Understanding on the Implementation of Article XXIV of GATT 1947. Regional trade arrangements such as customs unions and free-trade areas have been allowed by the GATT as they are deemed to promote trade liberalisation through the removal of substantially all trade restrictions between countries party to these trade arrangements. In practice this has not been the case, however, as these regional trade arrangements have been known to apply very protectionist trade policies. This research determines whether regional trade arrangements are inherently protective ie does the nature of these regional trade arrangements encourage protectionism? The external trade policies of the European Union (EU), Association of Southeast Asian Nations (ASEAN), Southern African Development Community (SADC) and the Southern African Customs Union (SACU) are analysed to determine whether the contracting parties to regional trade arrangements have corrupted the GATT provisions and so contributed towards the protectionist nature of these regional trade arrangements. The internal trade provisions relating to the implementation of these regional trade arrangements have also been discussed to determine their compliance with Article XXIV of GATT 1947. As all the selected regional trade arrangements have direct or indirect links to South Africa, the implications of the policies chosen by these parties for South Africa have also been discussed. Analysis of the EU, SADC, SACU and ASEAN has shown that prior to the adoption of the GATT 1994, the free-trade areas and customs unions were not implemented in accordance with Article XXIV provisions. These regional trade arrangements have been moulded to fit the economic aspirations of the relevant contracting states. Of the regional trade arrangements accepted by the GATT, free-trade areas have been found to be the least protectionist and are the least likely to be perverted by contracting parties. Customs unions, on the other hand, may encourage contracting parties to protect their economies as they rely on group participation rather than individual participation. Individual Member States become responsible to the group which provides these states with greater economic power. As a result Member States are motivated to protect the new group entity from outside competition. In this way, they are inherently protective. Safeguards are therefore necessary to protect individual non-Member States from such behaviour. The implications of protectionism for South Africa, SADC and SACU have also been discussed.
- Full Text:
- Date Issued: 1999
Re-creating home: British colonialism, culture and the Zuurveld environment in the nineteenth century
- Authors: Payne, Jill
- Date: 1999
- Subjects: Imperialism -- Social aspects , Imperialism -- Environmental aspects -- South Africa , Imperialism -- Environmental aspects -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2552 , http://hdl.handle.net/10962/d1002404 , Imperialism -- Social aspects , Imperialism -- Environmental aspects -- South Africa , Imperialism -- Environmental aspects -- South Africa -- Eastern Cape
- Description: This thesis centres on the environmental impact of British colonialism in the Zuurveld during the nineteenth century. Within this context, it addresses the extent to which human-engineered environmental change is dictated by cultural mindset. Consideration of the links between culture and landscape transformation illuminates a little-considered aspect of the colonial experience in the Zuurveld. The British worldview at the turn of the eighteenth century is examined, with special reference to attitudes towards the environment. The changes which occurred in this attitude while the colonists adjusted to a foreign environment are traced. Precolonial societies manipulated the environment to a certain extent, but it was the British colonists who were to have the most profound effect on the ecosystem. The colonists impacted on the Zuurveld in a variety of ways. Much of the environmental change they induced resulted from their attempts to construct a familiar world from the alien landscape surrounding them. Attempts to "re-create home" in the Zuurveld were closely linked to the desire to exert control over what was to the colonists an "untamed wilderness." To this end land was cleared and new land use methods put into practice. Wildlife species threatening productivity were eliminated or forced through loss of habitat to retreat to the peripheries of the settlement. Exotic flora and fauna took the place of indigenes. The introduction of a capitalist economy meant that greater demands were made on the carrying capacity of the land. Conservation legislation introduced to limit increasing environmental degradation and protect commercial productivity simultaneously limited African access to the environment. Control of the land was closely linked to control of Africans: their labour was needed to facilitate the subjugation of the environment. Only through an appreciation of the British colonial mentality can changes to the Zuurveld environment during the nineteenth century be fully understood. Consequently, this study indicates that cultural mindset can play a pivotal role in shaping the environment.
- Full Text:
- Date Issued: 1999
- Authors: Payne, Jill
- Date: 1999
- Subjects: Imperialism -- Social aspects , Imperialism -- Environmental aspects -- South Africa , Imperialism -- Environmental aspects -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2552 , http://hdl.handle.net/10962/d1002404 , Imperialism -- Social aspects , Imperialism -- Environmental aspects -- South Africa , Imperialism -- Environmental aspects -- South Africa -- Eastern Cape
- Description: This thesis centres on the environmental impact of British colonialism in the Zuurveld during the nineteenth century. Within this context, it addresses the extent to which human-engineered environmental change is dictated by cultural mindset. Consideration of the links between culture and landscape transformation illuminates a little-considered aspect of the colonial experience in the Zuurveld. The British worldview at the turn of the eighteenth century is examined, with special reference to attitudes towards the environment. The changes which occurred in this attitude while the colonists adjusted to a foreign environment are traced. Precolonial societies manipulated the environment to a certain extent, but it was the British colonists who were to have the most profound effect on the ecosystem. The colonists impacted on the Zuurveld in a variety of ways. Much of the environmental change they induced resulted from their attempts to construct a familiar world from the alien landscape surrounding them. Attempts to "re-create home" in the Zuurveld were closely linked to the desire to exert control over what was to the colonists an "untamed wilderness." To this end land was cleared and new land use methods put into practice. Wildlife species threatening productivity were eliminated or forced through loss of habitat to retreat to the peripheries of the settlement. Exotic flora and fauna took the place of indigenes. The introduction of a capitalist economy meant that greater demands were made on the carrying capacity of the land. Conservation legislation introduced to limit increasing environmental degradation and protect commercial productivity simultaneously limited African access to the environment. Control of the land was closely linked to control of Africans: their labour was needed to facilitate the subjugation of the environment. Only through an appreciation of the British colonial mentality can changes to the Zuurveld environment during the nineteenth century be fully understood. Consequently, this study indicates that cultural mindset can play a pivotal role in shaping the environment.
- Full Text:
- Date Issued: 1999
Removal of lead from solution by the non-viable biomass of the water fern Azolla filiculoides
- Authors: Sanyahumbi, Douglas
- Date: 1999
- Subjects: Azolla , Heavy metals -- Absorption and adsorption , Lead , Water -- Purification -- Biological treatment
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3901 , http://hdl.handle.net/10962/d1003960 , Azolla , Heavy metals -- Absorption and adsorption , Lead , Water -- Purification -- Biological treatment
- Description: The removal of lead from aqueous solution and lead-acid battery manufacturing waste-water by the non-viable biomass of the water fern Azolla filiculoides was investigated in both batch and column reactors. The maximum lead uptake by the Azolla biomass at a pH value of approximately 5, was found to be 100 mg lead/g biomass from aqueous solution. Lead removal varied from 30% of the initial lead concentration at pH 1.5 to approximately 95% at pH values of 3.5 and 5.6. Lead removal from aqueous solution decreased to 30% of the initial lead concentration if the lead concentration was initially over 400 mg/l. At initial lead concentrations of less than 400 mg/l, percentage lead removal was found to be over 90% of the initial lead concentration. Lead removal remained at approximately 90% between 10°C and 50°C. Biomass concentration (4-8 mg/l) had little effect on lead removal. The presence of iron (Fe) and lead, copper (Cu) and lead or all three metal ions in solution at varying ratios to each other did not appear to have any significant effect on lead removal. Percentage lead, copper and iron removal from aqueous solution was 80-95, 45-50 and 65-75% respectively for the different multiple-metal solutions studied. No break-through points were observed for lead removal from aqueous solutions in column reactors, with initial lead concentrations of less than 100 mg/l at varying flow rates of 2, 5 and 10 ml/min. This suggested that flow rate, and therefore retention time, had little effect on percentage lead removal from aqueous solution, which was more that 95%, at low initial lead concentrations (less than 100 mg/l). At initial lead concentrations of 200 mg/l or more, an increase in flow rate, which equates to a decrease in column retention time, resulted in break-through points occurring earlier in the column run. Percentage lead removal values, from lead-acid battery efiluent in column systems, of over 95% were achieved. Desorption of approximately 30% and 40% of bound lead was achieved, with 0.5 M HNO₃ in a volume of 50 ml, from two lead-acid battery. Repeated adsorption and desorption of lead by the Azalia biomass over 10 cycles did not result in any decrease in the percentage lead removal from effluent, which strongly suggested that the Azalla biomass could be re-used a number of times without deterioration in its physical integrity, or lead removal capacity. No evidence of deterioration in the Azolla biomass's physical integrity after 10 successive adsorption and desorption procedures was observed using scanning electron microscopy. The Azolla filiculoides biomass was, therefore, found to be able to effectively remove lead from aqueous solution and lead-acid battery effluent repeatedly, with no observed reduction in it's uptake capacity or physical integrity.
- Full Text:
- Date Issued: 1999
- Authors: Sanyahumbi, Douglas
- Date: 1999
- Subjects: Azolla , Heavy metals -- Absorption and adsorption , Lead , Water -- Purification -- Biological treatment
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3901 , http://hdl.handle.net/10962/d1003960 , Azolla , Heavy metals -- Absorption and adsorption , Lead , Water -- Purification -- Biological treatment
- Description: The removal of lead from aqueous solution and lead-acid battery manufacturing waste-water by the non-viable biomass of the water fern Azolla filiculoides was investigated in both batch and column reactors. The maximum lead uptake by the Azolla biomass at a pH value of approximately 5, was found to be 100 mg lead/g biomass from aqueous solution. Lead removal varied from 30% of the initial lead concentration at pH 1.5 to approximately 95% at pH values of 3.5 and 5.6. Lead removal from aqueous solution decreased to 30% of the initial lead concentration if the lead concentration was initially over 400 mg/l. At initial lead concentrations of less than 400 mg/l, percentage lead removal was found to be over 90% of the initial lead concentration. Lead removal remained at approximately 90% between 10°C and 50°C. Biomass concentration (4-8 mg/l) had little effect on lead removal. The presence of iron (Fe) and lead, copper (Cu) and lead or all three metal ions in solution at varying ratios to each other did not appear to have any significant effect on lead removal. Percentage lead, copper and iron removal from aqueous solution was 80-95, 45-50 and 65-75% respectively for the different multiple-metal solutions studied. No break-through points were observed for lead removal from aqueous solutions in column reactors, with initial lead concentrations of less than 100 mg/l at varying flow rates of 2, 5 and 10 ml/min. This suggested that flow rate, and therefore retention time, had little effect on percentage lead removal from aqueous solution, which was more that 95%, at low initial lead concentrations (less than 100 mg/l). At initial lead concentrations of 200 mg/l or more, an increase in flow rate, which equates to a decrease in column retention time, resulted in break-through points occurring earlier in the column run. Percentage lead removal values, from lead-acid battery efiluent in column systems, of over 95% were achieved. Desorption of approximately 30% and 40% of bound lead was achieved, with 0.5 M HNO₃ in a volume of 50 ml, from two lead-acid battery. Repeated adsorption and desorption of lead by the Azalia biomass over 10 cycles did not result in any decrease in the percentage lead removal from effluent, which strongly suggested that the Azalla biomass could be re-used a number of times without deterioration in its physical integrity, or lead removal capacity. No evidence of deterioration in the Azolla biomass's physical integrity after 10 successive adsorption and desorption procedures was observed using scanning electron microscopy. The Azolla filiculoides biomass was, therefore, found to be able to effectively remove lead from aqueous solution and lead-acid battery effluent repeatedly, with no observed reduction in it's uptake capacity or physical integrity.
- Full Text:
- Date Issued: 1999
Reproductive behaviour of Plectroctena mandibularis F. Smith (Hymenoptera: Formicidae), a ponerine ant with ergatoid queens
- Authors: Villet, Martin H
- Date: 1999
- Language: English
- Type: Article
- Identifier: vital:6890 , http://hdl.handle.net/10962/d1011650
- Description: [From the text]: The present study reports on new observations on the reproductive biology of P. mandibularis, particularly the phenology of males, mating behaviour and colony founding, that may help in deciding between alternative explanations for the occurrence of ergatoid queens in this species.
- Full Text:
- Date Issued: 1999
- Authors: Villet, Martin H
- Date: 1999
- Language: English
- Type: Article
- Identifier: vital:6890 , http://hdl.handle.net/10962/d1011650
- Description: [From the text]: The present study reports on new observations on the reproductive biology of P. mandibularis, particularly the phenology of males, mating behaviour and colony founding, that may help in deciding between alternative explanations for the occurrence of ergatoid queens in this species.
- Full Text:
- Date Issued: 1999
Research portfolio
- Muwanga-Zake, Johnnie Wycliffe Frank
- Authors: Muwanga-Zake, Johnnie Wycliffe Frank
- Date: 1999
- Subjects: Science -- Study and teaching Research
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1727 , http://hdl.handle.net/10962/d1003610
- Description: A survey carried out during 1998 in rural schools of the South East Region (Butterworth) in the Eastern Cape Province revealed that science teachers do not seem to know their problems in teaching science. Teachers related their problems to lack of apparatus and laboratories. However, it appeared that lack of conceptual understanding of science and of practical skills prevented teachers from preparing practical approaches in the classrooms. Lack of conceptual understanding could have also been the cause of the teacher's inability to innovate and manipulate apparatus. The call for laboratories also seemed to be caused by lack of knowledge of what is done in a laboratory. Practical approaches to science seemed to be further undermined by the irrelevance of apparatus and science in a rural setting, where few community members and teachers might have never used apparatus or done practical exercises anywhere. It is recommended that an integrated approach towards improving science education is required. That is, by means of workshops, all role-players in science education such as teacher training institutions such as Rhodes University, NGOs, the Department of Education and pre-service as well as in-service teachers, should discuss the problems in science education. There is a need to supply basic apparatus and to make sure that in-service and pre-service courses emphasise skills in the use of apparatus, innovating apparatus and practical experiences, along with improving the teacher's conceptual understanding of science. A science college of education is highly recommended to enable a special focus on the plight of science education in the Eastern Cape Province. It also felt that rural areas require special attention in terms of designing outcomes and learning experiences that bear relevance to that environment. The assumption that science education as perceived in industrialised areas can be beneficial everywhere is dangerous and gives science a bad name in rural areas. The survey also showed that triangulation of research instruments is necessary to increase validity and reliability of any research programme. The most useful method appeared to be video recording the interviews.
- Full Text:
- Date Issued: 1999
- Authors: Muwanga-Zake, Johnnie Wycliffe Frank
- Date: 1999
- Subjects: Science -- Study and teaching Research
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1727 , http://hdl.handle.net/10962/d1003610
- Description: A survey carried out during 1998 in rural schools of the South East Region (Butterworth) in the Eastern Cape Province revealed that science teachers do not seem to know their problems in teaching science. Teachers related their problems to lack of apparatus and laboratories. However, it appeared that lack of conceptual understanding of science and of practical skills prevented teachers from preparing practical approaches in the classrooms. Lack of conceptual understanding could have also been the cause of the teacher's inability to innovate and manipulate apparatus. The call for laboratories also seemed to be caused by lack of knowledge of what is done in a laboratory. Practical approaches to science seemed to be further undermined by the irrelevance of apparatus and science in a rural setting, where few community members and teachers might have never used apparatus or done practical exercises anywhere. It is recommended that an integrated approach towards improving science education is required. That is, by means of workshops, all role-players in science education such as teacher training institutions such as Rhodes University, NGOs, the Department of Education and pre-service as well as in-service teachers, should discuss the problems in science education. There is a need to supply basic apparatus and to make sure that in-service and pre-service courses emphasise skills in the use of apparatus, innovating apparatus and practical experiences, along with improving the teacher's conceptual understanding of science. A science college of education is highly recommended to enable a special focus on the plight of science education in the Eastern Cape Province. It also felt that rural areas require special attention in terms of designing outcomes and learning experiences that bear relevance to that environment. The assumption that science education as perceived in industrialised areas can be beneficial everywhere is dangerous and gives science a bad name in rural areas. The survey also showed that triangulation of research instruments is necessary to increase validity and reliability of any research programme. The most useful method appeared to be video recording the interviews.
- Full Text:
- Date Issued: 1999
Research portfolio : environmental education
- Authors: Le Roux, Kim
- Date: 1999
- Subjects: Environmental education -- South Africa , Environmental education -- Study and teaching -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1738 , http://hdl.handle.net/10962/d1003622
- Full Text:
- Date Issued: 1999
- Authors: Le Roux, Kim
- Date: 1999
- Subjects: Environmental education -- South Africa , Environmental education -- Study and teaching -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1738 , http://hdl.handle.net/10962/d1003622
- Full Text:
- Date Issued: 1999
Rhodes University Graduation Ceremony 1999
- Authors: Rhodes University
- Date: 1999
- Language: English
- Type: text
- Identifier: vital:8133 , http://hdl.handle.net/10962/d1006778
- Description: Rhodes University 1999 Graduation Ceremonies [at] 1820 Settlers National Monument Friday, 9 April 1999 at 18:00 p.m. [and] 10 April 1999 at 10:30 a.m. , The Installation of Gert Johannes Gerwel as Chancellor of Rhodes University to be followed by a Graduation Ceremony 1820 Settlers National Monument Friday, 9 April 1999 at 10:30 a.m. , Rhodes University 1999 Graduation Ceremony City Hall, East London Friday, 7 May 1999 at 18:00 p.m.
- Full Text:
- Date Issued: 1999
- Authors: Rhodes University
- Date: 1999
- Language: English
- Type: text
- Identifier: vital:8133 , http://hdl.handle.net/10962/d1006778
- Description: Rhodes University 1999 Graduation Ceremonies [at] 1820 Settlers National Monument Friday, 9 April 1999 at 18:00 p.m. [and] 10 April 1999 at 10:30 a.m. , The Installation of Gert Johannes Gerwel as Chancellor of Rhodes University to be followed by a Graduation Ceremony 1820 Settlers National Monument Friday, 9 April 1999 at 10:30 a.m. , Rhodes University 1999 Graduation Ceremony City Hall, East London Friday, 7 May 1999 at 18:00 p.m.
- Full Text:
- Date Issued: 1999
SAMWU's Anti-Privatisation campaign 1997-1999
- SAMWU
- Authors: SAMWU
- Date: 1999
- Subjects: SAMWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/111213 , vital:33414
- Description: Last week, SAMWU held lunchtime demonstrations around the country to protest against the privatisation of municipal services. The demonstrations were well attended with reports from the regions indicating that thousands of workers turned out. SAMWU has received an overwhelming show of solidarity from the international community. The General Secretary of UNISON, Britain’s largest public sector union with over 1 million members, wrote that “The UK experience of water privatisation has been huge windfall profits for the companies, record dividends for their shareholders, and massive pay rises for those at the top of these companies. At the same time, employees have suffered job losses, while consumers have had massive price rises. Drought restrictions are widespread and almost one third of all water leaks from old pipes.” The Community and Public Sector Union is Australia wrote that “the Victorian government has pursued similar policies since its election in 1992, and this has resulted in the loss of over 30 000 jobs. Despite the massive effort at privatisation, the state remains the highest taxed state in the nation!” The President of the Public Services Association in Trinidad and Tobago wrote “Our own experience is that Severn Trent of the UK has been granted a loan facility by our government to cover all operational losses for the three year period, thereby taking no risks and collecting management fees of millions of dollars. Water is the most essential commodity for humans and it should never be handed over to the private sector profiteers.” The Executive Committee of Algemene Onderwijsbond, Netherlands wrote: “the evil of privatisation of public holdings is a worldwide problem.. .be convinced of our solidarity and support with your struggle.” SINTAP, the Portuguese Union representing public administration personnel wrote: “We hope the Ministry of Constitutional Development will be able to accept your pilot projects for public sector alternatives to privatisation of water and waste services.” The International Secretary of the 1.3 million member AFSCME (American Federation of State, County and Municipal Employees) wrote: “given its central importance to sustaining life, water must remain in public hands. We applaud your actions to ensure working conditions for those employed in these critical public services and your leadership in educating the community of the danges associated with privatisation.” The President of the Lithuanian Trade Union Federation of Public Services faxed SAMWU’s President a message saying that “in Lithuania, the capital city of Vilnius has been fighting French multinational Lyonnaise Des Eaux for four years. They want to buy our city’s water system for 5 million US dollars and get 30% of the shares, which is valued at 660 000 US dollars. Its profit the company will get from our citizens pockets.”
- Full Text:
- Date Issued: 1999
- Authors: SAMWU
- Date: 1999
- Subjects: SAMWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/111213 , vital:33414
- Description: Last week, SAMWU held lunchtime demonstrations around the country to protest against the privatisation of municipal services. The demonstrations were well attended with reports from the regions indicating that thousands of workers turned out. SAMWU has received an overwhelming show of solidarity from the international community. The General Secretary of UNISON, Britain’s largest public sector union with over 1 million members, wrote that “The UK experience of water privatisation has been huge windfall profits for the companies, record dividends for their shareholders, and massive pay rises for those at the top of these companies. At the same time, employees have suffered job losses, while consumers have had massive price rises. Drought restrictions are widespread and almost one third of all water leaks from old pipes.” The Community and Public Sector Union is Australia wrote that “the Victorian government has pursued similar policies since its election in 1992, and this has resulted in the loss of over 30 000 jobs. Despite the massive effort at privatisation, the state remains the highest taxed state in the nation!” The President of the Public Services Association in Trinidad and Tobago wrote “Our own experience is that Severn Trent of the UK has been granted a loan facility by our government to cover all operational losses for the three year period, thereby taking no risks and collecting management fees of millions of dollars. Water is the most essential commodity for humans and it should never be handed over to the private sector profiteers.” The Executive Committee of Algemene Onderwijsbond, Netherlands wrote: “the evil of privatisation of public holdings is a worldwide problem.. .be convinced of our solidarity and support with your struggle.” SINTAP, the Portuguese Union representing public administration personnel wrote: “We hope the Ministry of Constitutional Development will be able to accept your pilot projects for public sector alternatives to privatisation of water and waste services.” The International Secretary of the 1.3 million member AFSCME (American Federation of State, County and Municipal Employees) wrote: “given its central importance to sustaining life, water must remain in public hands. We applaud your actions to ensure working conditions for those employed in these critical public services and your leadership in educating the community of the danges associated with privatisation.” The President of the Lithuanian Trade Union Federation of Public Services faxed SAMWU’s President a message saying that “in Lithuania, the capital city of Vilnius has been fighting French multinational Lyonnaise Des Eaux for four years. They want to buy our city’s water system for 5 million US dollars and get 30% of the shares, which is valued at 660 000 US dollars. Its profit the company will get from our citizens pockets.”
- Full Text:
- Date Issued: 1999
SAPS members' experience of diversity and diversity training within the SAPS
- Authors: Everton, Wilma
- Date: 1999
- Subjects: Police -- South Africa -- Attitudes , Cross-cultural orientation , Sex discrimination in criminal justice administration -- South Africa , Discrimination in criminal justice administration -- South Africa
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:2973 , http://hdl.handle.net/10962/d1002482 , Police -- South Africa -- Attitudes , Cross-cultural orientation , Sex discrimination in criminal justice administration -- South Africa , Discrimination in criminal justice administration -- South Africa
- Description: During this study, an attempt was made to explore the opinions and attitudes of members of the South African Police Service (SAPS) towards issues of diversity before, immediately after and three months after participating in diversity training workshops presented by the SAPS Training Division during 1997 in Port Elizabeth. The aim of this thesis was not to assess the diversity training itself, but to discover if the training, as currently presented, in any way influenced the attitudes of participants. In order to meet this goal, literature and empirical studies were conducted. The literature study sets the theoretical foundation pertaining to the history of the SAPS and the attitudes and prejudices of and diversity among SAPS members. During the empirical research phase, a non-probability purposive sampling procedure was adopted. Four of a range of diversity workshops presented by the Training Division of the SAPS during 1997 were selected for the purpose of this study. An internal SAPS process was used to nominate members to attend the workshops. The researcher requested the participants in each of the four workshops to complete a self-administered questionnaire before as well as after the workshop concerned. Immediately after each of the four workshops, a short interview was held with each attendee. To explore the stability of any change evident from responses on the questionnaires completed after the workshops, the attendees were again requested to complete the same questionnaire three months later. To increase the validity of any conclusion that attitudinal change was related to the workshop, a control group was used. This study has revealed that a cross-spectrum of SAPS members of both sexes and diverse racial backgrounds believe that various forms of discrimination exist within the SAPS. It confirmed that the diversity training presented by the SAPS Training Division is a useful instrument to heighten members' awareness of the different norms and customs of other cultural/ethnic groups and of the necessity that the SAPS should be constituted of a cross-spectrum of racial groups reflecting the South African society. Finally, based on the research findings, recommendations were made involving management and its supportive services and diversity training.
- Full Text:
- Date Issued: 1999
- Authors: Everton, Wilma
- Date: 1999
- Subjects: Police -- South Africa -- Attitudes , Cross-cultural orientation , Sex discrimination in criminal justice administration -- South Africa , Discrimination in criminal justice administration -- South Africa
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:2973 , http://hdl.handle.net/10962/d1002482 , Police -- South Africa -- Attitudes , Cross-cultural orientation , Sex discrimination in criminal justice administration -- South Africa , Discrimination in criminal justice administration -- South Africa
- Description: During this study, an attempt was made to explore the opinions and attitudes of members of the South African Police Service (SAPS) towards issues of diversity before, immediately after and three months after participating in diversity training workshops presented by the SAPS Training Division during 1997 in Port Elizabeth. The aim of this thesis was not to assess the diversity training itself, but to discover if the training, as currently presented, in any way influenced the attitudes of participants. In order to meet this goal, literature and empirical studies were conducted. The literature study sets the theoretical foundation pertaining to the history of the SAPS and the attitudes and prejudices of and diversity among SAPS members. During the empirical research phase, a non-probability purposive sampling procedure was adopted. Four of a range of diversity workshops presented by the Training Division of the SAPS during 1997 were selected for the purpose of this study. An internal SAPS process was used to nominate members to attend the workshops. The researcher requested the participants in each of the four workshops to complete a self-administered questionnaire before as well as after the workshop concerned. Immediately after each of the four workshops, a short interview was held with each attendee. To explore the stability of any change evident from responses on the questionnaires completed after the workshops, the attendees were again requested to complete the same questionnaire three months later. To increase the validity of any conclusion that attitudinal change was related to the workshop, a control group was used. This study has revealed that a cross-spectrum of SAPS members of both sexes and diverse racial backgrounds believe that various forms of discrimination exist within the SAPS. It confirmed that the diversity training presented by the SAPS Training Division is a useful instrument to heighten members' awareness of the different norms and customs of other cultural/ethnic groups and of the necessity that the SAPS should be constituted of a cross-spectrum of racial groups reflecting the South African society. Finally, based on the research findings, recommendations were made involving management and its supportive services and diversity training.
- Full Text:
- Date Issued: 1999
Seeking health: the hierarchy of resort in utilisation patterns of traditional and western medicine in multi-cultural Katutura, Namibia
- Authors: LeBeau, Debie
- Date: 1999
- Subjects: Traditional medicine -- Namibia -- Katutura (Windhoek) Social medicine -- Namibia -- History Traditional medicine -- Social aspects -- Namibia -- History Medical anthropology -- Namibia
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2103 , http://hdl.handle.net/10962/d1002666
- Description: This thesis examines health care choices patients make when illness and misfortune occur. Research on health seeking behaviour was conducted in Katutura (the African township outside of Windhoek in Namibia) during 1996 and 1997. Due to the availability of a wide range of health care options from both the western and the traditional medical systems, utilisation of traditional medicine represents a conscious choice by patients and is not due to a lack of other alternatives. The use of traditional medicine can therefore be attributed to social, cultural, and personal factors rather than access, cost, and distance to modern health care facilities. A set of theoretical postulates is constructed to explain health seeking behaviour, including western and African concepts of ill health, which integrates both macro and micro-level analysis. Through macro-level analysis, this model postulates that western and traditional medical systems are able to exist within a single society due to the presence of co-existing ideologies (Medical Systems Theory). This model further postulates that social change is a significant attribute of post-colonial Namibian society (Post-colonial Theory). Rapid social change causes social disequilibrium leading to insecurities within the population which increase traditional health care utilisation, especially due to witchcraft accusation. Thus, macro-level theories are used to explain the existence and form of health care alternatives in Katutura; while micro-level analysis is used to examine how people make rational health care choices based on individualised variables within the enabling and constraining umbrella of Namibia's social structure. These variables include the individual's means, goals, desires, and environment of physical and social objects. Health seeking behaviour is influenced by the individual's previous experiences (history), personal constraints, and access to information. Based on data from the 1996 Tradition and Health Survey administered as part of the research for this dissertation, a model for health seeking behaviour is developed to guide the analysis of qualitative data. This model postulates that different patterns of utilisation depend on perceived causes, reasons and origins (aetiology) as well as manifestations of illness. Some illnesses are perceived of as clearly African and some are seen to be clearly western (both of these perceptions result in a single utilisation pattern). Some illnesses have a social/spiritual aetiology but universally recognised manifestations (resulting in a simultaneous utilisation pattern), and some illnesses are of indeterminate aetiology until treatment begins (resulting in a multi-faceted utilisation pattern). In addition to a utilisation pattern based on the aetiology and manifestation of illness, previous health seeking experiences influence, to a certain extent, subsequent health care choices; whereby the failure of one medical system to produce satisfactory results can cause health seekers to shift to another treatment regimen. In Katutura choices patients make are also influenced, to a certain extent, by the urban nature of the health seeking environment. Urban patients seek traditional medicine for a range of social/spiritual aetiologies, due to rapid social change and the experience of new and threatening situations. Urban patients also have more knowledge and experience with the western concept of contagious transmission as opposed to the traditional concept of social/spiritual contamination. In addition, health seeking patterns vary slightly between the different ethnic groups in Katutura. Traditional aetiological beliefs of the different ethnic groups in Katutura are reflected in current cultural beliefs about the cause of illness.
- Full Text:
- Date Issued: 1999
- Authors: LeBeau, Debie
- Date: 1999
- Subjects: Traditional medicine -- Namibia -- Katutura (Windhoek) Social medicine -- Namibia -- History Traditional medicine -- Social aspects -- Namibia -- History Medical anthropology -- Namibia
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2103 , http://hdl.handle.net/10962/d1002666
- Description: This thesis examines health care choices patients make when illness and misfortune occur. Research on health seeking behaviour was conducted in Katutura (the African township outside of Windhoek in Namibia) during 1996 and 1997. Due to the availability of a wide range of health care options from both the western and the traditional medical systems, utilisation of traditional medicine represents a conscious choice by patients and is not due to a lack of other alternatives. The use of traditional medicine can therefore be attributed to social, cultural, and personal factors rather than access, cost, and distance to modern health care facilities. A set of theoretical postulates is constructed to explain health seeking behaviour, including western and African concepts of ill health, which integrates both macro and micro-level analysis. Through macro-level analysis, this model postulates that western and traditional medical systems are able to exist within a single society due to the presence of co-existing ideologies (Medical Systems Theory). This model further postulates that social change is a significant attribute of post-colonial Namibian society (Post-colonial Theory). Rapid social change causes social disequilibrium leading to insecurities within the population which increase traditional health care utilisation, especially due to witchcraft accusation. Thus, macro-level theories are used to explain the existence and form of health care alternatives in Katutura; while micro-level analysis is used to examine how people make rational health care choices based on individualised variables within the enabling and constraining umbrella of Namibia's social structure. These variables include the individual's means, goals, desires, and environment of physical and social objects. Health seeking behaviour is influenced by the individual's previous experiences (history), personal constraints, and access to information. Based on data from the 1996 Tradition and Health Survey administered as part of the research for this dissertation, a model for health seeking behaviour is developed to guide the analysis of qualitative data. This model postulates that different patterns of utilisation depend on perceived causes, reasons and origins (aetiology) as well as manifestations of illness. Some illnesses are perceived of as clearly African and some are seen to be clearly western (both of these perceptions result in a single utilisation pattern). Some illnesses have a social/spiritual aetiology but universally recognised manifestations (resulting in a simultaneous utilisation pattern), and some illnesses are of indeterminate aetiology until treatment begins (resulting in a multi-faceted utilisation pattern). In addition to a utilisation pattern based on the aetiology and manifestation of illness, previous health seeking experiences influence, to a certain extent, subsequent health care choices; whereby the failure of one medical system to produce satisfactory results can cause health seekers to shift to another treatment regimen. In Katutura choices patients make are also influenced, to a certain extent, by the urban nature of the health seeking environment. Urban patients seek traditional medicine for a range of social/spiritual aetiologies, due to rapid social change and the experience of new and threatening situations. Urban patients also have more knowledge and experience with the western concept of contagious transmission as opposed to the traditional concept of social/spiritual contamination. In addition, health seeking patterns vary slightly between the different ethnic groups in Katutura. Traditional aetiological beliefs of the different ethnic groups in Katutura are reflected in current cultural beliefs about the cause of illness.
- Full Text:
- Date Issued: 1999
Size-fractionated phytoplankton biomass and primary production in the Southern Ocean
- Authors: Balarin, Marianne G
- Date: 1999
- Subjects: Biomass -- Analysis , Phytoplankton , Atlantic Ocean
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5765 , http://hdl.handle.net/10962/d1005453 , Biomass -- Analysis , Phytoplankton , Atlantic Ocean
- Description: The factors controlling primary production in the Southern Ocean were investigated over two years during two cruises of the South African National Antarctic Program (SANAP). The first cruise was conducted to the region of the eastern Atlantic sector of the Southern Ocean during the collaborative Scandinavian/South African Antarctic expedition conducted in austral summer (DecemberIFebruary) 1997-1998. Production studies were conducted in the vicinity of the Marginal Ice Zone (MIZ), Interfrontal Zone (IFZ) and Antarctic Polar Front(APF). The second cruise was conducted during the Third Marion Island Oceanographic Survey (MIOS III) to the region of the Sub-Antarctic Prince Edward Islands in austral autumn (April/May) 1998. Size-fractionated production rates were estimated by 14C incorporation using standard JGOFS protocols. Oceanographic data from the first cruise suggest that the three regions can be divided into two distinct regimes. Stations occupied in the vicinity of the MIZ and the APF were characterised by a shallow mixed layer depth « 40m) while at the IFZ-stations, the mixed layer depth exceeded the 1% light depth. Microphytoplankton dominated integrated chlorophyll-a biomass in the MIZ (total chlorophyll a ranged between 15.4 and 41.3 mg Chi-a. m-2) and at the APF (range between 10.7 and 31.4 mg Chi-a. m-2) , comprising > 50% of total chlorophyll-a at all these stations. Xl Within the IFZ (2 stations), nanophytoplankton dominated total integrated Chl-a biomass (range between 5.6 and 8.8 mg Chi-a. m-2) comprising, on average, 36% of the total. Picophytoplankton comprised an average of 12% of the total Chl-a biomass (range between 3.1 and 5.9 mg Chi-a. m-2) in the MIZ, 36% in the IFZ (range between 6.4 and 7.8 mg Chl-a . m-2) and 20% in the vicinity of the APF (range between 6.8 and 10.6 mg Chi-a. m-2). Total integrated primary production ranged between 316 and 729 mg C . m-2. d-1 at stations occupied in the vicinity of the MIZ, and between 292 and 317 mg C . m·2• d-l within the IFZ. At stations occupied in the region of the APF, total integrated production ranged between 708 and 926 mg C . m-2• dol. The contribution of various size fractions to total productivity generally displayed the same pattern as integrated Chl-a biomass. Microphytoplankton formed the most important contributor to total production at stations occupied in the MIZ and at the APF. Within the IFZ, nanophytoplankton dominated total daily production. Nutrient data suggest that concentrations of macro nutrients within the upper water column were above the threshold where growth would be limited. Preliminary results showed that concentrations of iron (Fe) were highest in the southern region of the MIZ and in the vicinity of the APF. During the second cruise, conducted in the vicinity of the Sub-Antarctic Front (SAF) and in the upstream, inter-island and downstream regions of the Prince Edward Islands, there was evidence of fresh water run-off from the islands, (i.e. decreased salinities and increased concentrations of ammonia and nitrate). Oceanographic data collected at the various production stations indicated that the upper water column was well mixed throughout the survey. Total integrated biomass during the study ranged between 8.5 and 20.1 mg Chi-a. m-2• No distinct patterns in total Chl-a biomass were evident. Picophytoplankton dominated total biomass comprising> 45 % of total pigment at all stations. Nanophytoplankton were the second most important contributor to total integrated biomass. Generally xu microphytoplankton contributed < 10 % of total ChI-a. Total daily integrated production was highest (442.6 mg Chi-a. m-2) at the single station occupied in the vicinity of the SAF. Outside this region, total areal production was lower, ranging from 94.5 to 353.0 mg C . m-2. d-1. With the exception of the station occupied in the vicinity of the SAF, total productivity was dominated by nanophytoplankton, which comprised between 48 and 66% of the total. Concentrations of macronutrients did not appear to be limiting to phytoplankton growth. The absence of a phytoplankton bloom in the vicinity of the islands appears to have been related to water column stability, which was influenced by the prevailing oceanographic regime during the survey. Previous studies have shown that when the SAF lies in close proximity to the islands, advecting forces prevail, resulting in the islands functioning as a flow-through system. During this study, the SAF lay immediately north of the islands. As a consequence no water was trapped in the leeward side of the islands. The results of the two cruises suggest that phytoplankton production in the four systems investigated: the Marginal Ice Zone (MIZ), Antarctic Polar Front (APF), Inter Frontal Zone (IFZ) and Prince Edward Islands (PEl), was largely controlled by water column stability. It is probable that the availability of iron, particularly in the region of the MIZ and APF, may have further contributed to the elevated production recorded in these two regions.
- Full Text:
- Date Issued: 1999
- Authors: Balarin, Marianne G
- Date: 1999
- Subjects: Biomass -- Analysis , Phytoplankton , Atlantic Ocean
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5765 , http://hdl.handle.net/10962/d1005453 , Biomass -- Analysis , Phytoplankton , Atlantic Ocean
- Description: The factors controlling primary production in the Southern Ocean were investigated over two years during two cruises of the South African National Antarctic Program (SANAP). The first cruise was conducted to the region of the eastern Atlantic sector of the Southern Ocean during the collaborative Scandinavian/South African Antarctic expedition conducted in austral summer (DecemberIFebruary) 1997-1998. Production studies were conducted in the vicinity of the Marginal Ice Zone (MIZ), Interfrontal Zone (IFZ) and Antarctic Polar Front(APF). The second cruise was conducted during the Third Marion Island Oceanographic Survey (MIOS III) to the region of the Sub-Antarctic Prince Edward Islands in austral autumn (April/May) 1998. Size-fractionated production rates were estimated by 14C incorporation using standard JGOFS protocols. Oceanographic data from the first cruise suggest that the three regions can be divided into two distinct regimes. Stations occupied in the vicinity of the MIZ and the APF were characterised by a shallow mixed layer depth « 40m) while at the IFZ-stations, the mixed layer depth exceeded the 1% light depth. Microphytoplankton dominated integrated chlorophyll-a biomass in the MIZ (total chlorophyll a ranged between 15.4 and 41.3 mg Chi-a. m-2) and at the APF (range between 10.7 and 31.4 mg Chi-a. m-2) , comprising > 50% of total chlorophyll-a at all these stations. Xl Within the IFZ (2 stations), nanophytoplankton dominated total integrated Chl-a biomass (range between 5.6 and 8.8 mg Chi-a. m-2) comprising, on average, 36% of the total. Picophytoplankton comprised an average of 12% of the total Chl-a biomass (range between 3.1 and 5.9 mg Chi-a. m-2) in the MIZ, 36% in the IFZ (range between 6.4 and 7.8 mg Chl-a . m-2) and 20% in the vicinity of the APF (range between 6.8 and 10.6 mg Chi-a. m-2). Total integrated primary production ranged between 316 and 729 mg C . m-2. d-1 at stations occupied in the vicinity of the MIZ, and between 292 and 317 mg C . m·2• d-l within the IFZ. At stations occupied in the region of the APF, total integrated production ranged between 708 and 926 mg C . m-2• dol. The contribution of various size fractions to total productivity generally displayed the same pattern as integrated Chl-a biomass. Microphytoplankton formed the most important contributor to total production at stations occupied in the MIZ and at the APF. Within the IFZ, nanophytoplankton dominated total daily production. Nutrient data suggest that concentrations of macro nutrients within the upper water column were above the threshold where growth would be limited. Preliminary results showed that concentrations of iron (Fe) were highest in the southern region of the MIZ and in the vicinity of the APF. During the second cruise, conducted in the vicinity of the Sub-Antarctic Front (SAF) and in the upstream, inter-island and downstream regions of the Prince Edward Islands, there was evidence of fresh water run-off from the islands, (i.e. decreased salinities and increased concentrations of ammonia and nitrate). Oceanographic data collected at the various production stations indicated that the upper water column was well mixed throughout the survey. Total integrated biomass during the study ranged between 8.5 and 20.1 mg Chi-a. m-2• No distinct patterns in total Chl-a biomass were evident. Picophytoplankton dominated total biomass comprising> 45 % of total pigment at all stations. Nanophytoplankton were the second most important contributor to total integrated biomass. Generally xu microphytoplankton contributed < 10 % of total ChI-a. Total daily integrated production was highest (442.6 mg Chi-a. m-2) at the single station occupied in the vicinity of the SAF. Outside this region, total areal production was lower, ranging from 94.5 to 353.0 mg C . m-2. d-1. With the exception of the station occupied in the vicinity of the SAF, total productivity was dominated by nanophytoplankton, which comprised between 48 and 66% of the total. Concentrations of macronutrients did not appear to be limiting to phytoplankton growth. The absence of a phytoplankton bloom in the vicinity of the islands appears to have been related to water column stability, which was influenced by the prevailing oceanographic regime during the survey. Previous studies have shown that when the SAF lies in close proximity to the islands, advecting forces prevail, resulting in the islands functioning as a flow-through system. During this study, the SAF lay immediately north of the islands. As a consequence no water was trapped in the leeward side of the islands. The results of the two cruises suggest that phytoplankton production in the four systems investigated: the Marginal Ice Zone (MIZ), Antarctic Polar Front (APF), Inter Frontal Zone (IFZ) and Prince Edward Islands (PEl), was largely controlled by water column stability. It is probable that the availability of iron, particularly in the region of the MIZ and APF, may have further contributed to the elevated production recorded in these two regions.
- Full Text:
- Date Issued: 1999
South Africa's "Rainbow People", national pride and happiness
- Moller, Valerie, Dickow, H, Harris, M
- Authors: Moller, Valerie , Dickow, H , Harris, M
- Date: 1999
- Language: English
- Type: Article
- Identifier: vital:7117 , http://hdl.handle.net/10962/d1010751
- Description: Since the first free elections were held in April 1994, South Africans are popularly known as the ''rainbow people''. The paper inquires whether South Africans who experienced pride in their nation in the first years of democracy also perceived a greater sense of subjective well-being. It is proposed that national pride in post-apartheid South Africa might be fused with or work through self-esteem to lift levels of happiness. The paper traces the history of the new integrating civil religion of the rainbow people and the acceptance of the rainbow as a political symbol of unity among the diverse people of South Africa immediately after the 1994 elections and two years later. The proposed link between national pride and happiness was explored with data from two independent national surveys, the 1995 South African World Values Survey conducted by Markinor and a June 1996 MarkData syndicated omnibus survey. The study found that the appeal of the rainbow as political symbol was inclusive of all groups in society and that feelings of national pride and support for the rainbow ideal were positively associated with subjective well-being. As indicated by intensity and frequency measures, the majority of South Africans were proud of their country and could name a national achievement that inspired pride. Better-off South Africans tended to be happier and more satisfied with life but less proud, while the poor were less happy but fiercely proud of their country. Results suggest that belief in South Africa’s ''rainbow nation'' ideal may have assisted in boosting happiness during the transition to a stable democracy, thereby preventing alienation among the losers under the new political dispensation. Supporters of the ideal of the rainbow nation were more optimistic than others about the future of their country.
- Full Text:
- Date Issued: 1999
- Authors: Moller, Valerie , Dickow, H , Harris, M
- Date: 1999
- Language: English
- Type: Article
- Identifier: vital:7117 , http://hdl.handle.net/10962/d1010751
- Description: Since the first free elections were held in April 1994, South Africans are popularly known as the ''rainbow people''. The paper inquires whether South Africans who experienced pride in their nation in the first years of democracy also perceived a greater sense of subjective well-being. It is proposed that national pride in post-apartheid South Africa might be fused with or work through self-esteem to lift levels of happiness. The paper traces the history of the new integrating civil religion of the rainbow people and the acceptance of the rainbow as a political symbol of unity among the diverse people of South Africa immediately after the 1994 elections and two years later. The proposed link between national pride and happiness was explored with data from two independent national surveys, the 1995 South African World Values Survey conducted by Markinor and a June 1996 MarkData syndicated omnibus survey. The study found that the appeal of the rainbow as political symbol was inclusive of all groups in society and that feelings of national pride and support for the rainbow ideal were positively associated with subjective well-being. As indicated by intensity and frequency measures, the majority of South Africans were proud of their country and could name a national achievement that inspired pride. Better-off South Africans tended to be happier and more satisfied with life but less proud, while the poor were less happy but fiercely proud of their country. Results suggest that belief in South Africa’s ''rainbow nation'' ideal may have assisted in boosting happiness during the transition to a stable democracy, thereby preventing alienation among the losers under the new political dispensation. Supporters of the ideal of the rainbow nation were more optimistic than others about the future of their country.
- Full Text:
- Date Issued: 1999
South African small business growth through interfirm linkages
- Authors: Toomey, David Colbert
- Date: 1999
- Subjects: Small business -- South Africa Interorganizational relations Small business -- South Africa -- Growth -- Case studies South Africa -- Economic policy
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2836 , http://hdl.handle.net/10962/d1003046
- Description: Economic stagnation in sub-Saharan Africa since 1970 is well documented. While the causes are varied, the paradigm of nationalistic state-led economic development has changed. Economic development occurs in a global marketplace. Manufacturing has shifted from developed to less developed countries, an opportunity that was seized in Asia and Latin America. South Africa’s labour, unskilled and costly by world standards, is at a disadvantage as an agile and competitive world market seeks skilled labour at the lowest cost. South Africa’s Gear economic policy suggests that 300 000 new jobs need to be created annually until 2004 in order to reduce unemployment. Small, medium and microenterprise growth is central to meeting this target. Numerous government structures to assist small enterprises have been created. Few, however, assist small business with the demands of the marketplace. Most focus on generic skills training and questionable small business finance. This thesis suggests that interfirm linkages between large and small enterprises is one strategy that can assist the growth of small business, create employment and, increase labour skills. International experience shows that generic training is less effective in promoting small business than linking business training to actual market-demands. Interfirm linkages, most often through subcontracting, is a strategy used successfully in Taiwan, Indonesia, Malaysia and Brazil. Such linkages are usually government supported and provide incentives for both large and small businesses to work together productively. Three South African interfirm linkage case studies are critiqued. Case study findings indicate that interfirm linkages expose emerging businesses to market conditions, and can provide access to process technology training, low cost raw materials, creative finance, and new markets. Small business ‘learns by doing’ and also ‘learns while earning’. The state has a role in the development of a vibrant small, medium and microenterprise sector in South Africa. Current support strategies are largely unrelated to market conditions. Interfirm linkages are an approach that applies market forces in the development of small business. Government policy would be wisely directed to support such business interactions.
- Full Text:
- Date Issued: 1999
- Authors: Toomey, David Colbert
- Date: 1999
- Subjects: Small business -- South Africa Interorganizational relations Small business -- South Africa -- Growth -- Case studies South Africa -- Economic policy
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2836 , http://hdl.handle.net/10962/d1003046
- Description: Economic stagnation in sub-Saharan Africa since 1970 is well documented. While the causes are varied, the paradigm of nationalistic state-led economic development has changed. Economic development occurs in a global marketplace. Manufacturing has shifted from developed to less developed countries, an opportunity that was seized in Asia and Latin America. South Africa’s labour, unskilled and costly by world standards, is at a disadvantage as an agile and competitive world market seeks skilled labour at the lowest cost. South Africa’s Gear economic policy suggests that 300 000 new jobs need to be created annually until 2004 in order to reduce unemployment. Small, medium and microenterprise growth is central to meeting this target. Numerous government structures to assist small enterprises have been created. Few, however, assist small business with the demands of the marketplace. Most focus on generic skills training and questionable small business finance. This thesis suggests that interfirm linkages between large and small enterprises is one strategy that can assist the growth of small business, create employment and, increase labour skills. International experience shows that generic training is less effective in promoting small business than linking business training to actual market-demands. Interfirm linkages, most often through subcontracting, is a strategy used successfully in Taiwan, Indonesia, Malaysia and Brazil. Such linkages are usually government supported and provide incentives for both large and small businesses to work together productively. Three South African interfirm linkage case studies are critiqued. Case study findings indicate that interfirm linkages expose emerging businesses to market conditions, and can provide access to process technology training, low cost raw materials, creative finance, and new markets. Small business ‘learns by doing’ and also ‘learns while earning’. The state has a role in the development of a vibrant small, medium and microenterprise sector in South Africa. Current support strategies are largely unrelated to market conditions. Interfirm linkages are an approach that applies market forces in the development of small business. Government policy would be wisely directed to support such business interactions.
- Full Text:
- Date Issued: 1999
Southern African Journal of Gerontology, volume 8, number 1, April 1999
- Ferreira, Monica (editor), Moller, Valerie, HSRC/UCT Centre for Gerontology
- Authors: Ferreira, Monica (editor) , Moller, Valerie , HSRC/UCT Centre for Gerontology
- Date: 1999
- Subjects: Gerontology -- South Africa , Older people -- Care -- South Africa
- Language: English
- Type: Text
- Identifier: vital:8078 , http://hdl.handle.net/10962/d1012912
- Description: [From Editorial] Several contemporary building blocks of African gerontology are used in the papers in this number of SAJG. First, Madzingira draws on 1990s' demographic data sources to examine selected levels, patterns and trends of population ageing in Zimbabwe. She briefly outlines implications of population ageing for socio-economic development in the country, and highlights critical areas such as the future of the family as a safety net for elders, inadequate social-security measures, health care provision, trends in consumption of goods and services, and the ageing population structure in the rural areas. Although based on a descriptive modernization theory model, the paper reflects the continued usefulness of the theory in highlighting the effects of structural lag, but avoids a reliance on stereotypes. Staying in Zimbabwe, Mupedziswa takes up feminist issues and critiques the plight of older female informal-sector traders and their gender-based cumulative disadvantage. The author pertinently and sympathetically examines the women's diminished access to power across the lifespan and their dilemma as they become increasingly frail. Refreshingly, he approaches his investigation from a political economy perspective, and considers the interdependence of this gender-differentiated age cohort and the social structure. Moving to Ghana, Adeku in his paper examines socio-demographic factors in the marital status of older persons. His findings highlight the greater proportion of widows in the older population, which gender differential he explains is a function of both a high mortality rate in older men and remarriage. He also specifically examines gender-based inheritance and other wealth transfer patterns - and hence uses both social exchange theory and political economy theory concepts for explanation, as well as draws on feminist theories to analyse the situations of the older women. Staying in Ghana, Darkwa gives his views on the health-care needs and challenges of older Ghanaians who reside in rural areas. Again, the author addresses a political economy issue, and makes suggestions on how the government could bridge the urban-rural health gap and improve both preventive and curative health-care service delivery to the vast majority of the older Ghanaian population which lives in the rural areas. He also introduces an intriguing notion of the role that communication technology can play in the future provision of health care to Africa's elderly. Finally, revisiting demographic and health transitions in Africa, their implications and related issues, Adamchak reviews the World Health Organization's 1997 report on Ageing in Africa, authored by Nana Araba Apt in Ghana. Adamchak evaluates this "overview" report and its relevance, and examines some of the historical and contemporary African gerontology building blocks with which the report is constructed.
- Full Text:
- Date Issued: 1999
- Authors: Ferreira, Monica (editor) , Moller, Valerie , HSRC/UCT Centre for Gerontology
- Date: 1999
- Subjects: Gerontology -- South Africa , Older people -- Care -- South Africa
- Language: English
- Type: Text
- Identifier: vital:8078 , http://hdl.handle.net/10962/d1012912
- Description: [From Editorial] Several contemporary building blocks of African gerontology are used in the papers in this number of SAJG. First, Madzingira draws on 1990s' demographic data sources to examine selected levels, patterns and trends of population ageing in Zimbabwe. She briefly outlines implications of population ageing for socio-economic development in the country, and highlights critical areas such as the future of the family as a safety net for elders, inadequate social-security measures, health care provision, trends in consumption of goods and services, and the ageing population structure in the rural areas. Although based on a descriptive modernization theory model, the paper reflects the continued usefulness of the theory in highlighting the effects of structural lag, but avoids a reliance on stereotypes. Staying in Zimbabwe, Mupedziswa takes up feminist issues and critiques the plight of older female informal-sector traders and their gender-based cumulative disadvantage. The author pertinently and sympathetically examines the women's diminished access to power across the lifespan and their dilemma as they become increasingly frail. Refreshingly, he approaches his investigation from a political economy perspective, and considers the interdependence of this gender-differentiated age cohort and the social structure. Moving to Ghana, Adeku in his paper examines socio-demographic factors in the marital status of older persons. His findings highlight the greater proportion of widows in the older population, which gender differential he explains is a function of both a high mortality rate in older men and remarriage. He also specifically examines gender-based inheritance and other wealth transfer patterns - and hence uses both social exchange theory and political economy theory concepts for explanation, as well as draws on feminist theories to analyse the situations of the older women. Staying in Ghana, Darkwa gives his views on the health-care needs and challenges of older Ghanaians who reside in rural areas. Again, the author addresses a political economy issue, and makes suggestions on how the government could bridge the urban-rural health gap and improve both preventive and curative health-care service delivery to the vast majority of the older Ghanaian population which lives in the rural areas. He also introduces an intriguing notion of the role that communication technology can play in the future provision of health care to Africa's elderly. Finally, revisiting demographic and health transitions in Africa, their implications and related issues, Adamchak reviews the World Health Organization's 1997 report on Ageing in Africa, authored by Nana Araba Apt in Ghana. Adamchak evaluates this "overview" report and its relevance, and examines some of the historical and contemporary African gerontology building blocks with which the report is constructed.
- Full Text:
- Date Issued: 1999
Southern African Journal of Gerontology, volume 8, number 2, October 1999
- Ferreira, Monica (editor), Moller, Valerie, HSRC/UCT Centre for Gerontology
- Authors: Ferreira, Monica (editor) , Moller, Valerie , HSRC/UCT Centre for Gerontology
- Date: 1999
- Subjects: Gerontology -- South Africa , Older people -- Care -- South Africa
- Language: English
- Type: Text
- Identifier: vital:8079 , http://hdl.handle.net/10962/d1012913
- Description: [From Editorial] The papers included in this special issue highlight some of the issues of elderliness and old age in Africa outlined above. Using different disciplinary approaches, the papers should appeal to age-old researchers in varied fields. In a discussion of old age and ageing in pre-industrial Africa, Sagner moves away from the rather simplistic images of old age which still beset many African gerontologists. Drawing on the Xhosa-speaking peoples in the 19th century he argues that the experience of later life was shaped by gender, kinship and "class" differences as well as by biographical factors, making for a variety of later-life experiences. He points out that old age was not a clear-cut period of life with unique demographic, economic or social characteristics/ conditions, set apart from earlier life phases. However, he notes that (deep) old age was firmly tied to religious and metaphysical beliefs. He argues that loss of bodily functions in (deep) old age was hardly stigmatizing as the loss was socially constructed as a sign of increasing other-worldliness. By linking old age with superhuman agency, the ideological hegemony of old age remained unbroken, despite bodily decline, even though the latter could herald loss of this-worldly status and, finally, abandonment in the bush. Moller and Sotshangaye discuss contemporary relations between Zulu grandmothers and grandchildren in South Africa's KwaZulu-Natal province. Though the grandmothers whom the two authors interviewed expressed deep concern about losing the respect of their grandchildren, in the eyes of the latter old age is, surprisingly, not denigrated as a possible source of moral guidance. Moller and Sotshangaye point out that strains in the grandmothers-grandchildren relationship are located in the rapidly changing social context which easily tends to outdate the elders' teaching, rather than in the intergenerational politics of the family per se. Paradoxically, however, macro-social changes have also led to a re-strengthening of the grandmothers' moral authority. The paper also shows that successful ageing- in the sense of one's personal happiness in old age - is, at least partly, relational defined. , Moving northwards up the subcontinent to Mozambique, da Silva records the results of a case study on the situation of older people who had to cope with several long-standing wars and natural disasters in their lifetimes. She analyses the repercussions which endured displacements, forced migrations and other war-related life-course experiences had on the lives of today's elderly, both at the personal and social level. In detailing social policy propositions she reminds us that there is a fundamental divergence between how older people are represented in some authoritative discourses and the social reality of old age. To overcome the prevailing negative representations of old age is of utmost practical importance, as the problematicity image encourages non-participatory government approaches and hinders thus the empowerment of the elderly. Turning to a methodological plane, Mommersteeg details some of the problems - and advantages - which the use of interpreters in qualitative research settings entail. In keeping with a hermeneutic approach, he shows that the interpreter is in fact a culture broker, rather than a mere provider of a linguistically correct translation. Mommersteeg's paper illustrates very well that interviews which are mediated through interpreters are not dialogically but triologically constituted, as are their "products" - the storied voices of the interviewees. In her article, Coetzee reports on exploratory field research in an old-age centre outside Bloemfontein in South Africa's Free State province. Based on participant observation and in-depth interviews she finds that elderly residents experience old age negatively. Though this subjective reality partly reflects the residents' difficulties in adjusting to their ageing bodies, it is mainly grounded in her subjects' difficulties to construct a framework within which their present position in the world could be instilled with personal/social meaning. Coetzee' s paper stresses both the relevance of a life course perspective and a gender-sensitive approach to the study of old-age experience.
- Full Text:
- Date Issued: 1999
- Authors: Ferreira, Monica (editor) , Moller, Valerie , HSRC/UCT Centre for Gerontology
- Date: 1999
- Subjects: Gerontology -- South Africa , Older people -- Care -- South Africa
- Language: English
- Type: Text
- Identifier: vital:8079 , http://hdl.handle.net/10962/d1012913
- Description: [From Editorial] The papers included in this special issue highlight some of the issues of elderliness and old age in Africa outlined above. Using different disciplinary approaches, the papers should appeal to age-old researchers in varied fields. In a discussion of old age and ageing in pre-industrial Africa, Sagner moves away from the rather simplistic images of old age which still beset many African gerontologists. Drawing on the Xhosa-speaking peoples in the 19th century he argues that the experience of later life was shaped by gender, kinship and "class" differences as well as by biographical factors, making for a variety of later-life experiences. He points out that old age was not a clear-cut period of life with unique demographic, economic or social characteristics/ conditions, set apart from earlier life phases. However, he notes that (deep) old age was firmly tied to religious and metaphysical beliefs. He argues that loss of bodily functions in (deep) old age was hardly stigmatizing as the loss was socially constructed as a sign of increasing other-worldliness. By linking old age with superhuman agency, the ideological hegemony of old age remained unbroken, despite bodily decline, even though the latter could herald loss of this-worldly status and, finally, abandonment in the bush. Moller and Sotshangaye discuss contemporary relations between Zulu grandmothers and grandchildren in South Africa's KwaZulu-Natal province. Though the grandmothers whom the two authors interviewed expressed deep concern about losing the respect of their grandchildren, in the eyes of the latter old age is, surprisingly, not denigrated as a possible source of moral guidance. Moller and Sotshangaye point out that strains in the grandmothers-grandchildren relationship are located in the rapidly changing social context which easily tends to outdate the elders' teaching, rather than in the intergenerational politics of the family per se. Paradoxically, however, macro-social changes have also led to a re-strengthening of the grandmothers' moral authority. The paper also shows that successful ageing- in the sense of one's personal happiness in old age - is, at least partly, relational defined. , Moving northwards up the subcontinent to Mozambique, da Silva records the results of a case study on the situation of older people who had to cope with several long-standing wars and natural disasters in their lifetimes. She analyses the repercussions which endured displacements, forced migrations and other war-related life-course experiences had on the lives of today's elderly, both at the personal and social level. In detailing social policy propositions she reminds us that there is a fundamental divergence between how older people are represented in some authoritative discourses and the social reality of old age. To overcome the prevailing negative representations of old age is of utmost practical importance, as the problematicity image encourages non-participatory government approaches and hinders thus the empowerment of the elderly. Turning to a methodological plane, Mommersteeg details some of the problems - and advantages - which the use of interpreters in qualitative research settings entail. In keeping with a hermeneutic approach, he shows that the interpreter is in fact a culture broker, rather than a mere provider of a linguistically correct translation. Mommersteeg's paper illustrates very well that interviews which are mediated through interpreters are not dialogically but triologically constituted, as are their "products" - the storied voices of the interviewees. In her article, Coetzee reports on exploratory field research in an old-age centre outside Bloemfontein in South Africa's Free State province. Based on participant observation and in-depth interviews she finds that elderly residents experience old age negatively. Though this subjective reality partly reflects the residents' difficulties in adjusting to their ageing bodies, it is mainly grounded in her subjects' difficulties to construct a framework within which their present position in the world could be instilled with personal/social meaning. Coetzee' s paper stresses both the relevance of a life course perspective and a gender-sensitive approach to the study of old-age experience.
- Full Text:
- Date Issued: 1999