Commission of Inquiry into Oukasie Violence
- UDF
- Authors: UDF
- Date: 1990
- Subjects: UDF
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/250651 , vital:52035
- Description: In June 1990, the United Democratic Front [UDF] appointed Brian Cumin, National Director of Lawyers for Human Rights as Commissioner to investigate and report on the reasons for the violence in Oukasie Township, Brits, since February 1986. Brian Cumin was empowered to appoint additional Commissioners to assist him. David Bam and Mpho Molefe, both practising Attorneys in Pretoria were duly appointed as co-commissioners. As part of their report on the reasons for the violence in Oukasie, the Commissioners have taken the liberty of making recommendations to the United Democratic Front.
- Full Text:
- Date Issued: 1990
- Authors: UDF
- Date: 1990
- Subjects: UDF
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/250651 , vital:52035
- Description: In June 1990, the United Democratic Front [UDF] appointed Brian Cumin, National Director of Lawyers for Human Rights as Commissioner to investigate and report on the reasons for the violence in Oukasie Township, Brits, since February 1986. Brian Cumin was empowered to appoint additional Commissioners to assist him. David Bam and Mpho Molefe, both practising Attorneys in Pretoria were duly appointed as co-commissioners. As part of their report on the reasons for the violence in Oukasie, the Commissioners have taken the liberty of making recommendations to the United Democratic Front.
- Full Text:
- Date Issued: 1990
Community-based co-operative ventures in Port Elizabeth
- Authors: Davies, William J
- Date: 1990
- Subjects: Cities and towns -- Africa Cooperative societies Economic development Producer cooperatives Port Elizabeth (South Africa) -- Economic conditions
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2329 , vital:20276 , ISBN 0868102032
- Description: This Working Paper reports on the results of an investigation into community-based co-operative ventures in Port Elizabeth. It represents part of an on-going research programme dealing with Black economic development undertaken by the Development Studies Unit (DSU) at Rhodes University. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1990
- Authors: Davies, William J
- Date: 1990
- Subjects: Cities and towns -- Africa Cooperative societies Economic development Producer cooperatives Port Elizabeth (South Africa) -- Economic conditions
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2329 , vital:20276 , ISBN 0868102032
- Description: This Working Paper reports on the results of an investigation into community-based co-operative ventures in Port Elizabeth. It represents part of an on-going research programme dealing with Black economic development undertaken by the Development Studies Unit (DSU) at Rhodes University. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1990
COSATU Regional education programme
- COSATU
- Authors: COSATU
- Date: 1990
- Subjects: COSATU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/154403 , vital:39695
- Description: This document should be used by ail of us involved in Education as a basis for discussion on organising education in the Federation. We have pulled together all the relevant information and reccommen- dations which we hope will assist Led- comm, Educators and our constitutional structures in understanding what our tasks are in the locals and in affiliates. The Redcomm agreed that an Education Programme must go beyond being just a number of workshops and seminars. It must be a dynamic process which must contribute to the strengthening of our structures, improving the quality of our debates and promoting leadership of the working class in our struggle for democracy.
- Full Text:
- Date Issued: 1990
- Authors: COSATU
- Date: 1990
- Subjects: COSATU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/154403 , vital:39695
- Description: This document should be used by ail of us involved in Education as a basis for discussion on organising education in the Federation. We have pulled together all the relevant information and reccommen- dations which we hope will assist Led- comm, Educators and our constitutional structures in understanding what our tasks are in the locals and in affiliates. The Redcomm agreed that an Education Programme must go beyond being just a number of workshops and seminars. It must be a dynamic process which must contribute to the strengthening of our structures, improving the quality of our debates and promoting leadership of the working class in our struggle for democracy.
- Full Text:
- Date Issued: 1990
Dealing with distress: a medical anthropological analysis of the search for health in a rural Transkeian village
- Authors: Simon, Christian Michael
- Date: 1990
- Subjects: Medical care -- South Africa -- Transkei -- Jotelo , Poor -- Health and hygiene -- South Africa -- Transkei , Transkei (South Africa) -- Economic conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2082 , http://hdl.handle.net/10962/d1001599
- Description: This study aims to characterize and understand the search for health in a rural Transkeian community. It begins with the observation that the people of Jotelo have to negotiate considerable hardships in their daily lives. These hardships include the impact of malnutrition, undernourishment and a wide range of diseases like tuberculosis, typhoid and gastro-enteritis. To survive ill-health, people develop numerous practical strategies. Most significantly, they attempt to maximise availalble resources, like cash, their relations with others and local medical facilities. Hence the study attempts to characterize how and why patients select various kinds of therapy in their search for health. By focusing on patients' recourses to treatment, the study reveals that the search for health is as much a personal experience as it is a social and economic one. This idea is developed in an analysis of the links betw'een work, illness and social reproduction. The point which emerges from this discussion captures the central theme of the study: the search for health is a profoundly personal, social and economic experience. This notion is strengthened by an examination of the historical and contemporary nature of local health and health care. It is observed that health and health care is intimately linked to the local and wider political economy. This not only serves to contextualise the discussion on patients' actual experiences, but points to the fact that these experiences are part of wider processes. By depicting the search for health in this way, the study hopes to have illustrated what people do in times of illness and why. Yet it also claims to have gone beyond such a depiction. By abstracting from its findings, it aims to conclude that the search for health is not merely caused by various local and wider processes, to which it has referred. In other words, it hopes to avoid a deterministic view of patients' experiences in times of distress. Instead, it is argued that the search for health is ultimately an integral part of the local and wider economic and political environment
- Full Text:
- Date Issued: 1990
- Authors: Simon, Christian Michael
- Date: 1990
- Subjects: Medical care -- South Africa -- Transkei -- Jotelo , Poor -- Health and hygiene -- South Africa -- Transkei , Transkei (South Africa) -- Economic conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2082 , http://hdl.handle.net/10962/d1001599
- Description: This study aims to characterize and understand the search for health in a rural Transkeian community. It begins with the observation that the people of Jotelo have to negotiate considerable hardships in their daily lives. These hardships include the impact of malnutrition, undernourishment and a wide range of diseases like tuberculosis, typhoid and gastro-enteritis. To survive ill-health, people develop numerous practical strategies. Most significantly, they attempt to maximise availalble resources, like cash, their relations with others and local medical facilities. Hence the study attempts to characterize how and why patients select various kinds of therapy in their search for health. By focusing on patients' recourses to treatment, the study reveals that the search for health is as much a personal experience as it is a social and economic one. This idea is developed in an analysis of the links betw'een work, illness and social reproduction. The point which emerges from this discussion captures the central theme of the study: the search for health is a profoundly personal, social and economic experience. This notion is strengthened by an examination of the historical and contemporary nature of local health and health care. It is observed that health and health care is intimately linked to the local and wider political economy. This not only serves to contextualise the discussion on patients' actual experiences, but points to the fact that these experiences are part of wider processes. By depicting the search for health in this way, the study hopes to have illustrated what people do in times of illness and why. Yet it also claims to have gone beyond such a depiction. By abstracting from its findings, it aims to conclude that the search for health is not merely caused by various local and wider processes, to which it has referred. In other words, it hopes to avoid a deterministic view of patients' experiences in times of distress. Instead, it is argued that the search for health is ultimately an integral part of the local and wider economic and political environment
- Full Text:
- Date Issued: 1990
Development issues in the Eastern Cape: a review and assessment: proceedings of a symposium organised under the auspices of the Institute of Social and Economic Research at Rhodes University and the Development Society of Southern Africa, held in Port Elizabeth on March 24, 1986
- Rhodes University. Institute of Social and Economic Reseaerch, Development Society of Southern Africa
- Authors: Rhodes University. Institute of Social and Economic Reseaerch , Development Society of Southern Africa
- Date: 1990
- Subjects: Black people -- South Africa -- Cape of Good Hope -- Economic conditions -- Congresses Eastern Cape (South Africa) -- Economic policy -- Congresses
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2340 , vital:20277 , ISBN 0868101400
- Description: Conditions in the Eastern Cape are generally characterised by rising levels of African community frustration and anger and by decreasing levels of economic activity. These, in turn, have led to high and increasing unemployment and to sustained confrontation and conflict as Africans increasingly seek to satisfy legitimate aspirations in a system which has consistently denied them full and free participation in economic and political decision-making. Consumer and school boycotts, work stay-aways and mass protest are the external manifestations of deep-seated grievances because there are no other appropriate forms of community expression. The Eastern Cape has become destabilised by an escalating spiral of violence, repression and reaction, followed by more repression and further violence. Such circumstances are not conducive to sound socio-economic development and it has now become imperative to address the real causes of community antagonism. The symptoms abound and it is these that the authorities have attempted to address, without any significant success. A necessary precondition to addressing local issues is to know what they are and to understand how they affect people's lives. However, such awareness and understanding cannot be secured without communication, discussion and negotiation - and there is no doubt that too little of this takes place in the region. Organised commerce and industry and some local development agencies have made sincere efforts to engage in honest and frank deliberation with the people; but their ability to produce the goods, and to mobilise fundamental change is limited by the constraints of national government policy. In the final analysis, therefore, responsibility for development lies at the national level and a prerequisite for development requires a commitment to change; not just tinkering with the system structure, but a thorough and comprehensive shake-down of that system to introduce a new order. It was against the background of these imperatives that the Institute of Social and Economic Research at Rhodes University and the Development Society of Southern Africa organised a Symposium under the title of "Development Issues in the Eastern Cape: A Review and Assessment" which was held in Port Elizabeth on March 24 1986. The objective of the symposium was twofold: first, to provide a forum at which a range of pertinent development issues could be tentatively explored, and secondly, to provide a platform on which to build a network of on-going communication and negotiation so as to contribute towards intergroup understanding and cooperation, thereby creating an environment in which joint endeavour towards change can be facilitated. The proceedings of the Symposium are contained in this volume, the publication of which represents 'a first step in the process of establishing a forum for local communication, debate and action; a forum designed to establish the economic and political development imperatives for the Eastern Cape and to ensure that these are unequivocally conveyed to government. An essential point of departure for such a forum is that existing and prior policies and strategies have failed and that solutions cannot be found by attempting to remould a structure that is flawed. A new mould must be devised, one that incorporates a totally innovative approach to socio-economic, political and community development in the Eastern Cape. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1990
- Authors: Rhodes University. Institute of Social and Economic Reseaerch , Development Society of Southern Africa
- Date: 1990
- Subjects: Black people -- South Africa -- Cape of Good Hope -- Economic conditions -- Congresses Eastern Cape (South Africa) -- Economic policy -- Congresses
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2340 , vital:20277 , ISBN 0868101400
- Description: Conditions in the Eastern Cape are generally characterised by rising levels of African community frustration and anger and by decreasing levels of economic activity. These, in turn, have led to high and increasing unemployment and to sustained confrontation and conflict as Africans increasingly seek to satisfy legitimate aspirations in a system which has consistently denied them full and free participation in economic and political decision-making. Consumer and school boycotts, work stay-aways and mass protest are the external manifestations of deep-seated grievances because there are no other appropriate forms of community expression. The Eastern Cape has become destabilised by an escalating spiral of violence, repression and reaction, followed by more repression and further violence. Such circumstances are not conducive to sound socio-economic development and it has now become imperative to address the real causes of community antagonism. The symptoms abound and it is these that the authorities have attempted to address, without any significant success. A necessary precondition to addressing local issues is to know what they are and to understand how they affect people's lives. However, such awareness and understanding cannot be secured without communication, discussion and negotiation - and there is no doubt that too little of this takes place in the region. Organised commerce and industry and some local development agencies have made sincere efforts to engage in honest and frank deliberation with the people; but their ability to produce the goods, and to mobilise fundamental change is limited by the constraints of national government policy. In the final analysis, therefore, responsibility for development lies at the national level and a prerequisite for development requires a commitment to change; not just tinkering with the system structure, but a thorough and comprehensive shake-down of that system to introduce a new order. It was against the background of these imperatives that the Institute of Social and Economic Research at Rhodes University and the Development Society of Southern Africa organised a Symposium under the title of "Development Issues in the Eastern Cape: A Review and Assessment" which was held in Port Elizabeth on March 24 1986. The objective of the symposium was twofold: first, to provide a forum at which a range of pertinent development issues could be tentatively explored, and secondly, to provide a platform on which to build a network of on-going communication and negotiation so as to contribute towards intergroup understanding and cooperation, thereby creating an environment in which joint endeavour towards change can be facilitated. The proceedings of the Symposium are contained in this volume, the publication of which represents 'a first step in the process of establishing a forum for local communication, debate and action; a forum designed to establish the economic and political development imperatives for the Eastern Cape and to ensure that these are unequivocally conveyed to government. An essential point of departure for such a forum is that existing and prior policies and strategies have failed and that solutions cannot be found by attempting to remould a structure that is flawed. A new mould must be devised, one that incorporates a totally innovative approach to socio-economic, political and community development in the Eastern Cape. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1990
Die verhouding tussen literêre teorie en kritiek in die Afrikaanse literêre sisteem binne die sg. "nuwe paradigma" aan die hand van gekose figure Marianne de Jong, Joan Hambidge en Gerrit Olivier
- Mudzanani, Nndanduleni Bethuel
- Authors: Mudzanani, Nndanduleni Bethuel
- Date: 1990
- Subjects: Olivier, Gerrit, 1954- , Hambidge, Joan, 1956- , De Jong, Marianne , Afrikaans literature -- History and criticism , Afrikaans literature -- Criticism and interpretation
- Language: Afrikaans
- Type: Thesis , Masters , MA
- Identifier: vital:3599 , http://hdl.handle.net/10962/d1002174 , Olivier, Gerrit, 1954- , Hambidge, Joan, 1956- , De Jong, Marianne , Afrikaans literature -- History and criticism , Afrikaans literature -- Criticism and interpretation
- Description: Currently, in the period of Poststructualism literature is widely approached as a cultural and social phenomenon and the aims of literary studies as the illuminating of social codes, ideology etc. embedded in literature. This study evaluates the contribution of specific critics working within the so-called "New paradigm". The concept "New paradigm" is used as an umbrella term covering a number of distinct developments, referring to literature as a system of literary "actions" rather than as a canon of books. In recent years several Afrikaans critics have embraced or adapted current theories in the domains of Deconstruction, Ideology Criticism, Literary, Sociology, Recepticm Aesthetics, Semiotics and Feminism. This study explores and evaluates the application of such theoretical paradigms to their work in the field of practical criticism. This study also explores the relationship between current theories of literature and their antecedents. The notion of current literary theory and practice not only as a broadening of scope and content of the notion of the "literary" but on the other hand as a liberation of theory and practice from an over-deterministic thrust (i.e. the approach of literature as no more than a set of social documents) is also evaluated in this study. A twofold aim of this study can thus be defined: a. to determine the extent to which the shift from the "old" to "new" theories was made necessary by the developing literary and social scene; b. to examine the links beween theory and practice in the work of specific, key figures in Afrikaans. Is it possible for theory and practice to be separated? Is there an important consistence in the relationship between the two in the work of the figures chosen?
- Full Text:
- Date Issued: 1990
- Authors: Mudzanani, Nndanduleni Bethuel
- Date: 1990
- Subjects: Olivier, Gerrit, 1954- , Hambidge, Joan, 1956- , De Jong, Marianne , Afrikaans literature -- History and criticism , Afrikaans literature -- Criticism and interpretation
- Language: Afrikaans
- Type: Thesis , Masters , MA
- Identifier: vital:3599 , http://hdl.handle.net/10962/d1002174 , Olivier, Gerrit, 1954- , Hambidge, Joan, 1956- , De Jong, Marianne , Afrikaans literature -- History and criticism , Afrikaans literature -- Criticism and interpretation
- Description: Currently, in the period of Poststructualism literature is widely approached as a cultural and social phenomenon and the aims of literary studies as the illuminating of social codes, ideology etc. embedded in literature. This study evaluates the contribution of specific critics working within the so-called "New paradigm". The concept "New paradigm" is used as an umbrella term covering a number of distinct developments, referring to literature as a system of literary "actions" rather than as a canon of books. In recent years several Afrikaans critics have embraced or adapted current theories in the domains of Deconstruction, Ideology Criticism, Literary, Sociology, Recepticm Aesthetics, Semiotics and Feminism. This study explores and evaluates the application of such theoretical paradigms to their work in the field of practical criticism. This study also explores the relationship between current theories of literature and their antecedents. The notion of current literary theory and practice not only as a broadening of scope and content of the notion of the "literary" but on the other hand as a liberation of theory and practice from an over-deterministic thrust (i.e. the approach of literature as no more than a set of social documents) is also evaluated in this study. A twofold aim of this study can thus be defined: a. to determine the extent to which the shift from the "old" to "new" theories was made necessary by the developing literary and social scene; b. to examine the links beween theory and practice in the work of specific, key figures in Afrikaans. Is it possible for theory and practice to be separated? Is there an important consistence in the relationship between the two in the work of the figures chosen?
- Full Text:
- Date Issued: 1990
Enrichment strategies for gifted English first language (HG) pupils at the senior secondary level : a critical evaluation of a programme implemented at Grey Boys' High School, Port Elizabeth, 1986-1988
- Authors: Cunningham, Gregory Mark
- Date: 1990
- Subjects: English language -- Study and teaching (Secondary) -- South Africa -- Eastern Cape Gifted children -- Education (Secondary) -- South Africa -- Eastern Cape Gifted children -- Education -- Research
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1510 , http://hdl.handle.net/10962/d1003392
- Description: Programmes developed specifically for the gifted and talented pupil are not a novel idea. Yet, by comparison, the history of gifted education is a brief one. Highly gifted and talented pupils often have difficulty being challenged in a conventional classroom situation. Since classroom instruction is usually designed for the benefit of pupils who function at the level of the majority of their peer age-group, this teaching, no matter how well done, may not be appropriate for the extremely gifted pupil whose abilities differ greatly from this group. Even special programmes for gifted and talented students may be designed for a broad group of gifted students and may not meet the specific needs of the gifted child, especially ones with a special intellectual talent. While it is important to bear aspects such as the characteristics of giftedness and the attributes of the talented individual in mind, the basis of this dissertation examines what enrichment and acceleration strategies may be utilised by the English First Language (HG) teacher when presented with a preselected group of pupils who are gifted in English, utilising a composite gifted educational model as a mechanism for the development of this specific programme.
- Full Text:
- Date Issued: 1990
- Authors: Cunningham, Gregory Mark
- Date: 1990
- Subjects: English language -- Study and teaching (Secondary) -- South Africa -- Eastern Cape Gifted children -- Education (Secondary) -- South Africa -- Eastern Cape Gifted children -- Education -- Research
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1510 , http://hdl.handle.net/10962/d1003392
- Description: Programmes developed specifically for the gifted and talented pupil are not a novel idea. Yet, by comparison, the history of gifted education is a brief one. Highly gifted and talented pupils often have difficulty being challenged in a conventional classroom situation. Since classroom instruction is usually designed for the benefit of pupils who function at the level of the majority of their peer age-group, this teaching, no matter how well done, may not be appropriate for the extremely gifted pupil whose abilities differ greatly from this group. Even special programmes for gifted and talented students may be designed for a broad group of gifted students and may not meet the specific needs of the gifted child, especially ones with a special intellectual talent. While it is important to bear aspects such as the characteristics of giftedness and the attributes of the talented individual in mind, the basis of this dissertation examines what enrichment and acceleration strategies may be utilised by the English First Language (HG) teacher when presented with a preselected group of pupils who are gifted in English, utilising a composite gifted educational model as a mechanism for the development of this specific programme.
- Full Text:
- Date Issued: 1990
Essential fatty acids and ascorbic acid- interactions and effects on melanoma growth
- Authors: Gardiner, Neil Stockenstrom
- Date: 1990
- Subjects: Fatty acids , Melanoma , Mice -- Diseases
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4549 , http://hdl.handle.net/10962/d1018230
- Description: The present study was carried out to determine the effects and possible mechanisms of action of the essential fatty acids (EFAs) (linoleic acid (LA), gamma-linolenic acid (GLA) and arachidonic acid (AA)) and ascorbic acid (Asc) on BL6 murine melanoma growth in cell culture and in mice. Interactions between the nutrients in influencing melanoma growth as well as possible mechanisms of the interactions were also examined in the above systems. Cell culture studies revealed that all three EFAs (0-SOμg/ml) and Asc (0-200μg/ml) significantly inhibited melanoma growth at the concentrations used. The EF As were also found to significantly inhibit growth, although to a lesser extent than BL6 cells, of monkey kidney (LLCMK) cells which were used as a non-malignant control cell line. Asc in contrast was found not to inhibit growth of these cells. Supplementation of Asc (lOO)μg/ml) to EFA containing (0-50μg/ml) medium was found to significantly increase inhibition of cell growth in both cell lines, and in the BL6 cells in particular, after taking into account the growth inhibitory effects of Asc in the absence of EFAs. The mechanism of cell growth inhibition by the EF As appeared to involve lipid peroxidation but not enhanced prostaglandin (PG) or leukotriene (LT) synthesis. While Asc was found to increase both lipid peroxidation and PG synthesis in the cells, these mechanisms and enhanced LT synthesis did not appear to have played a role in the inhibition of cell growth by Asc or in the growth inhibitory interaction between Asc and the EF As. In vivo studies revealed that diets containing essential or polyunsaturated fatty acids (EFAs/PUFAs) in the form of vegetable oils, and in particular GLA in the form of evening primrose oil, significantly promoted melanoma growth in mice when compared with an EFA/PUFA free diet containing predominantly saturated fats (SF). Supplementary dietary Asc in contrast was found to significantly inhibit melanoma growth in mice fed EFA/PUFA, and in particular GLA, containing diets but not in mice fed SF cont~g diets. This result appears to indicate the occurrence of an interaction between the two nutrients. Ul The mechanism of tumour promotion by the EP As/PUP As did not appear to have involved enhanced PG or LT synthesis or lipid peroxidation. Since dietary EPA/PUPA manipulation was found to significantly alter the EPA content of tissues, including the melanomas, the mechanism of tumour promotion may have involved changes in the EPA composition of the tumour cells. While supplementary Asc was found to significantly increase the Asc content of certain tissues, including the melanomas, which may have played a role in tumour growth inhibition by Asc, it was found not to affect the EPA content of tissues. Enhanced PG or LT synthesis and lipid perox:idation did not appear to have been involved in the tumour growth inhibitory interaction between Asc and the EP As/PUP As. THe activity of the enzyme delta-6-desaturase, a key enzyme in EF A metabolism which catalyses the desaturation of LA to GLA, and the influence of Asc on activity of the enzyme were also examined. The cultured cells, and BL6 cells in particular, were found to contain significant activity of the enzyme. Whereas murine liver microsomal fractions were found to contain delta-6-desaturase activity, microsomes from melanomas grown in mice were found to lack activity of the enzyme. The significant tumour promoting effects of the GLA containing EPO diet may have been the result of the lack of delta-6-desaturase activity in tumour cells grown in mice. Asc was found to stimulate activity of the enzyme in cultured BL6 cells but not in LLCM.K cells, while dietary Asc and EF A/PUP A manipulation did not influence activity of the enzyme in microsomal fractions. This study has confirmed previous reports of the in vivo tumour promoting effects of dietary EP As/PUP As and the tumour growth inhibitory effects of Asc. The in vitro cell growth inhibitory effects of Asc and the EP As also confirm the results of previous reports. Previous studies investigating possible interactions between Asc and EP As/PUP As in influencing tumour cell growth could not be located in the relevant literature. This study may therefore be one of the first investigations of any such interaction between these nutrients in tumour cells. While this study was not able to identify the mechanisms involved in the different tumour promoting or tumour growth inhibitory effects of the two nutrients in the two systems, it did eliminate a number of potential mechanisms. The results of this study also emphasise the difficulty of attempting to compare the results of in vitro and in vivo studies.
- Full Text:
- Date Issued: 1990
- Authors: Gardiner, Neil Stockenstrom
- Date: 1990
- Subjects: Fatty acids , Melanoma , Mice -- Diseases
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4549 , http://hdl.handle.net/10962/d1018230
- Description: The present study was carried out to determine the effects and possible mechanisms of action of the essential fatty acids (EFAs) (linoleic acid (LA), gamma-linolenic acid (GLA) and arachidonic acid (AA)) and ascorbic acid (Asc) on BL6 murine melanoma growth in cell culture and in mice. Interactions between the nutrients in influencing melanoma growth as well as possible mechanisms of the interactions were also examined in the above systems. Cell culture studies revealed that all three EFAs (0-SOμg/ml) and Asc (0-200μg/ml) significantly inhibited melanoma growth at the concentrations used. The EF As were also found to significantly inhibit growth, although to a lesser extent than BL6 cells, of monkey kidney (LLCMK) cells which were used as a non-malignant control cell line. Asc in contrast was found not to inhibit growth of these cells. Supplementation of Asc (lOO)μg/ml) to EFA containing (0-50μg/ml) medium was found to significantly increase inhibition of cell growth in both cell lines, and in the BL6 cells in particular, after taking into account the growth inhibitory effects of Asc in the absence of EFAs. The mechanism of cell growth inhibition by the EF As appeared to involve lipid peroxidation but not enhanced prostaglandin (PG) or leukotriene (LT) synthesis. While Asc was found to increase both lipid peroxidation and PG synthesis in the cells, these mechanisms and enhanced LT synthesis did not appear to have played a role in the inhibition of cell growth by Asc or in the growth inhibitory interaction between Asc and the EF As. In vivo studies revealed that diets containing essential or polyunsaturated fatty acids (EFAs/PUFAs) in the form of vegetable oils, and in particular GLA in the form of evening primrose oil, significantly promoted melanoma growth in mice when compared with an EFA/PUFA free diet containing predominantly saturated fats (SF). Supplementary dietary Asc in contrast was found to significantly inhibit melanoma growth in mice fed EFA/PUFA, and in particular GLA, containing diets but not in mice fed SF cont~g diets. This result appears to indicate the occurrence of an interaction between the two nutrients. Ul The mechanism of tumour promotion by the EP As/PUP As did not appear to have involved enhanced PG or LT synthesis or lipid peroxidation. Since dietary EPA/PUPA manipulation was found to significantly alter the EPA content of tissues, including the melanomas, the mechanism of tumour promotion may have involved changes in the EPA composition of the tumour cells. While supplementary Asc was found to significantly increase the Asc content of certain tissues, including the melanomas, which may have played a role in tumour growth inhibition by Asc, it was found not to affect the EPA content of tissues. Enhanced PG or LT synthesis and lipid perox:idation did not appear to have been involved in the tumour growth inhibitory interaction between Asc and the EP As/PUP As. THe activity of the enzyme delta-6-desaturase, a key enzyme in EF A metabolism which catalyses the desaturation of LA to GLA, and the influence of Asc on activity of the enzyme were also examined. The cultured cells, and BL6 cells in particular, were found to contain significant activity of the enzyme. Whereas murine liver microsomal fractions were found to contain delta-6-desaturase activity, microsomes from melanomas grown in mice were found to lack activity of the enzyme. The significant tumour promoting effects of the GLA containing EPO diet may have been the result of the lack of delta-6-desaturase activity in tumour cells grown in mice. Asc was found to stimulate activity of the enzyme in cultured BL6 cells but not in LLCM.K cells, while dietary Asc and EF A/PUP A manipulation did not influence activity of the enzyme in microsomal fractions. This study has confirmed previous reports of the in vivo tumour promoting effects of dietary EP As/PUP As and the tumour growth inhibitory effects of Asc. The in vitro cell growth inhibitory effects of Asc and the EP As also confirm the results of previous reports. Previous studies investigating possible interactions between Asc and EP As/PUP As in influencing tumour cell growth could not be located in the relevant literature. This study may therefore be one of the first investigations of any such interaction between these nutrients in tumour cells. While this study was not able to identify the mechanisms involved in the different tumour promoting or tumour growth inhibitory effects of the two nutrients in the two systems, it did eliminate a number of potential mechanisms. The results of this study also emphasise the difficulty of attempting to compare the results of in vitro and in vivo studies.
- Full Text:
- Date Issued: 1990
Etetwa labuya
- Nogcinile and group of Xhosa women, Tracey, Andrew T N
- Authors: Nogcinile and group of Xhosa women , Tracey, Andrew T N
- Date: 1990
- Subjects: Xhosa (African people) -- South Africa , Folk music , Mouth bow , Sub-Saharan African music , Africa South Africa Lady Frere f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/93758 , vital:30923 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC029b-08
- Description: Traditional Thembu song accompanied by umrhubhe mouth bow.
- Full Text: false
- Date Issued: 1990
- Authors: Nogcinile and group of Xhosa women , Tracey, Andrew T N
- Date: 1990
- Subjects: Xhosa (African people) -- South Africa , Folk music , Mouth bow , Sub-Saharan African music , Africa South Africa Lady Frere f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/93758 , vital:30923 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC029b-08
- Description: Traditional Thembu song accompanied by umrhubhe mouth bow.
- Full Text: false
- Date Issued: 1990
Ezma ndohamba
- Nonogcinile, Nomillion and group, Tracey, Andrew T N and Gerhard Kubik
- Authors: Nonogcinile, Nomillion and group , Tracey, Andrew T N and Gerhard Kubik
- Date: 1990
- Subjects: Xhosa (African people) -- South Africa , Folk music , Folk dance , Sub-Saharan African music , Africa South Africa Lady Frere f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/93487 , vital:30886 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC028a-04
- Description: Traditional Thembu umngqungqo women's song for girls initiation.
- Full Text: false
- Date Issued: 1990
- Authors: Nonogcinile, Nomillion and group , Tracey, Andrew T N and Gerhard Kubik
- Date: 1990
- Subjects: Xhosa (African people) -- South Africa , Folk music , Folk dance , Sub-Saharan African music , Africa South Africa Lady Frere f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/93487 , vital:30886 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC028a-04
- Description: Traditional Thembu umngqungqo women's song for girls initiation.
- Full Text: false
- Date Issued: 1990
Fest-Quest '89: a survey of visitors to the 1989 Standard Bank Arts Festival
- Authors: Davies, William J
- Date: 1990
- Subjects: Standard Bank National Arts Festival Art festivals -- South Africa Performing arts -- South Africa Art and society -- South Africa
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/1730 , vital:20220 , ISBN 0868101990
- Description: The Standard Bank National Arts Festival is an annual event which invades the City of Grahamstown in early July. Over the years, it has become an important national cultural showcase of theatre, dance, music, and fine art. It also attracts a wide variety of handicraft and hone industry vendors, which together with other peripheral activities, transforms the City into a bustling place imbued with a festive atmosphere. Apart from its cultural significance, the Festival means a great deal to the local economy because it attracts visitors from all over the country who spend several million rand whilst they are in Grahamstown. The Development Studies Unit at Rhodes University and the 1820 Foundation have monitored the nature and extent of the festival's impact on Grahamstown since 1987. Information is collected by means of a voluntary questionnaire (the Fest-Quest) which provides a useful resource for the Festival organisers as well as insights into the relative economic importance of the occasion. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1990
- Authors: Davies, William J
- Date: 1990
- Subjects: Standard Bank National Arts Festival Art festivals -- South Africa Performing arts -- South Africa Art and society -- South Africa
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/1730 , vital:20220 , ISBN 0868101990
- Description: The Standard Bank National Arts Festival is an annual event which invades the City of Grahamstown in early July. Over the years, it has become an important national cultural showcase of theatre, dance, music, and fine art. It also attracts a wide variety of handicraft and hone industry vendors, which together with other peripheral activities, transforms the City into a bustling place imbued with a festive atmosphere. Apart from its cultural significance, the Festival means a great deal to the local economy because it attracts visitors from all over the country who spend several million rand whilst they are in Grahamstown. The Development Studies Unit at Rhodes University and the 1820 Foundation have monitored the nature and extent of the festival's impact on Grahamstown since 1987. Information is collected by means of a voluntary questionnaire (the Fest-Quest) which provides a useful resource for the Festival organisers as well as insights into the relative economic importance of the occasion. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1990
Household, production and the organisation of cooperative labour in Shixini, Transkei
- Authors: Heron, Gavin Stewart
- Date: 1990
- Subjects: Xhosa (African people) , Agriculture -- South Africa -- Transkei , Agriculture, Cooperative -- South Africa -- Transkei , Cooperative societies -- South Africa -- Transkei
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2109 , http://hdl.handle.net/10962/d1007448 , Xhosa (African people) , Agriculture -- South Africa -- Transkei , Agriculture, Cooperative -- South Africa -- Transkei , Cooperative societies -- South Africa -- Transkei
- Description: Incidences of cooperation in agricultural activity are widespread phenomena in low-income third world communities. Two forms of cooperative labour groupings are identified in Shixini, Transkei . These are the work party and the ploughing company. It is argued that different organisational principles operate in the different cooperative forms. Work parties are based on principles of neighbourhood whi Ie ploughing companies are organised around kinship relationships. Factors which determine the principle of organisation are social values; the wider South African economic system; ecology; reciprocity; the constitution and structure of the household; economic differentiation; and labour demand and supply. The dissertation is divided into five chapters. The first is an overview of the Shixini social, economic and political systems. This chapter discusses the influence of the wider South African politico-economic system on agricultural production; the Shixini!Transkei political context; kinship and its relation to social organisation; and the likely effects of an agricultural 'betterment' scheme on the area. The second chapter is an overview of agricultural production in Shixini. It is found that the most significant determinants of agricultural production is the structure and constitution of the household and the way in which stock is distributed in the community. The third and fourth chapters describe and analyse Xhosa work parties and ploughing companies . Argument is lead as to the reasons for the specific organisational principles operating in each case. The penultimate chapter is an analysis of sacred and secular ritual. It is argued that both ritual forms reveal cooperative principles of organisation. Secular ritual dramatises the organisation of work parties while sacred ritual dramatises kinship relationships and so, the organisation of ploughing companies. , KMBT_363
- Full Text:
- Date Issued: 1990
- Authors: Heron, Gavin Stewart
- Date: 1990
- Subjects: Xhosa (African people) , Agriculture -- South Africa -- Transkei , Agriculture, Cooperative -- South Africa -- Transkei , Cooperative societies -- South Africa -- Transkei
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2109 , http://hdl.handle.net/10962/d1007448 , Xhosa (African people) , Agriculture -- South Africa -- Transkei , Agriculture, Cooperative -- South Africa -- Transkei , Cooperative societies -- South Africa -- Transkei
- Description: Incidences of cooperation in agricultural activity are widespread phenomena in low-income third world communities. Two forms of cooperative labour groupings are identified in Shixini, Transkei . These are the work party and the ploughing company. It is argued that different organisational principles operate in the different cooperative forms. Work parties are based on principles of neighbourhood whi Ie ploughing companies are organised around kinship relationships. Factors which determine the principle of organisation are social values; the wider South African economic system; ecology; reciprocity; the constitution and structure of the household; economic differentiation; and labour demand and supply. The dissertation is divided into five chapters. The first is an overview of the Shixini social, economic and political systems. This chapter discusses the influence of the wider South African politico-economic system on agricultural production; the Shixini!Transkei political context; kinship and its relation to social organisation; and the likely effects of an agricultural 'betterment' scheme on the area. The second chapter is an overview of agricultural production in Shixini. It is found that the most significant determinants of agricultural production is the structure and constitution of the household and the way in which stock is distributed in the community. The third and fourth chapters describe and analyse Xhosa work parties and ploughing companies . Argument is lead as to the reasons for the specific organisational principles operating in each case. The penultimate chapter is an analysis of sacred and secular ritual. It is argued that both ritual forms reveal cooperative principles of organisation. Secular ritual dramatises the organisation of work parties while sacred ritual dramatises kinship relationships and so, the organisation of ploughing companies. , KMBT_363
- Full Text:
- Date Issued: 1990
ICEF Energy conference
- CWIU
- Authors: CWIU
- Date: 1990
- Subjects: CWIU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/152450 , vital:39279
- Description: The decline in world energy consumption caused by the twin oil price hikes of 1973 and 1979 checked development in the major market economies and triggered the process of industrial restructuring that has so profoundly affected all sectors and all regions. ore efficient use of more expensive energy and strategic policy changes have made major contributions to easing the historical reliance upon energy inputs - especially in the case of oil. As a result the ratio between energy consumption and growth of gross world production has diminished by nearly 25 % over the past fifteen years. It has been estimated that full use of available energy-efficient technologies could cut per capita energy use by as much as 50% without impeding economic growth. The extent to which these gains are realized will depend upon a wide variety of economic and developmental factors, among which the price management of fuels is a very important one. here has also been a change in the industrial mix of the major OECD economies with the decline of old industries using high energy imputs and the rise of high technology sectors with different and lower energy requirements. The shift of much basic manufacturing to new locations in the developing world and to the hitherto centrally planned economies is likely to precipitate a further important change in energy requirements. emand for energy is forecast to continue to grow at only about half the rate of general economic growth over the short to medium term. Consumption is very uneven on a world scale, however. In 1988 the world consumed energy equivalent to some 8 billion tonnes of oil (Tonnes Oil Equivalent, or TOE) - an average of 1.3 tonnes for every man, woman and child on Earth. While citizens of the USA will consume an average of 8 TOE per capita, however, the average for both Japan and Western Europe is around 3 TOE, while people in the Third World still rely on fuelwood and dried animal dung as important energy resources, consuming only a small fraction of a TOE each in many cases.
- Full Text:
- Date Issued: 1990
- Authors: CWIU
- Date: 1990
- Subjects: CWIU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/152450 , vital:39279
- Description: The decline in world energy consumption caused by the twin oil price hikes of 1973 and 1979 checked development in the major market economies and triggered the process of industrial restructuring that has so profoundly affected all sectors and all regions. ore efficient use of more expensive energy and strategic policy changes have made major contributions to easing the historical reliance upon energy inputs - especially in the case of oil. As a result the ratio between energy consumption and growth of gross world production has diminished by nearly 25 % over the past fifteen years. It has been estimated that full use of available energy-efficient technologies could cut per capita energy use by as much as 50% without impeding economic growth. The extent to which these gains are realized will depend upon a wide variety of economic and developmental factors, among which the price management of fuels is a very important one. here has also been a change in the industrial mix of the major OECD economies with the decline of old industries using high energy imputs and the rise of high technology sectors with different and lower energy requirements. The shift of much basic manufacturing to new locations in the developing world and to the hitherto centrally planned economies is likely to precipitate a further important change in energy requirements. emand for energy is forecast to continue to grow at only about half the rate of general economic growth over the short to medium term. Consumption is very uneven on a world scale, however. In 1988 the world consumed energy equivalent to some 8 billion tonnes of oil (Tonnes Oil Equivalent, or TOE) - an average of 1.3 tonnes for every man, woman and child on Earth. While citizens of the USA will consume an average of 8 TOE per capita, however, the average for both Japan and Western Europe is around 3 TOE, while people in the Third World still rely on fuelwood and dried animal dung as important energy resources, consuming only a small fraction of a TOE each in many cases.
- Full Text:
- Date Issued: 1990
Ihule lendoda
- Ngqoko married women villagers, Tracey, Andrew T N
- Authors: Ngqoko married women villagers , Tracey, Andrew T N
- Date: 1990
- Subjects: Xhosa (African people) -- South Africa , Folk music , folk dance , Sub-Saharan African music , Africa South Africa Lady Frere f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/93694 , vital:30916 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC029b-01
- Description: Traditional Thembu umngqungqo married women's song for girls initiation.
- Full Text: false
- Date Issued: 1990
- Authors: Ngqoko married women villagers , Tracey, Andrew T N
- Date: 1990
- Subjects: Xhosa (African people) -- South Africa , Folk music , folk dance , Sub-Saharan African music , Africa South Africa Lady Frere f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/93694 , vital:30916 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC029b-01
- Description: Traditional Thembu umngqungqo married women's song for girls initiation.
- Full Text: false
- Date Issued: 1990
Imithandazo
- Ngqoko married women villagers, Tracey, Andrew T N
- Authors: Ngqoko married women villagers , Tracey, Andrew T N
- Date: 1990
- Subjects: Xhosa (African people) -- South Africa , Folk music , folk dance , Sub-Saharan African music , Africa South Africa Lady Frere f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/93731 , vital:30920 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC029b-05
- Description: Traditional Thembu umngqungqo married women's song for girls initiation.
- Full Text: false
- Date Issued: 1990
- Authors: Ngqoko married women villagers , Tracey, Andrew T N
- Date: 1990
- Subjects: Xhosa (African people) -- South Africa , Folk music , folk dance , Sub-Saharan African music , Africa South Africa Lady Frere f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/93731 , vital:30920 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC029b-05
- Description: Traditional Thembu umngqungqo married women's song for girls initiation.
- Full Text: false
- Date Issued: 1990
Immunolocalisation of, and ultrastructural changes in the LH gonadotropes of Miniopterus schreibersii and Rhinolophus capensis (Mammalia: Chiroptera) in relation to their reproductive cycles
- Authors: Bojarski, Christina
- Date: 1990
- Subjects: Bats -- Reproduction
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5589 , http://hdl.handle.net/10962/d1002039
- Description: LH gonadotropes are successfully identified in the anterior pituitary of Minioptems schreibersii and Rhinolophus capensis, using immunogold labelling at the light and electron microscopy level. The gonadotropes are oval to polygonal in shape and possess numerous small secretory granules, which contain LH throughout the year. Their distribution is similar in both species, although the abundance varies slightly between species and sexes. Seasonal changes are detected in gonadotrope ultrastructure, pituitary LH levels, and plasma hormone levels, and activity pattern of LH gonadotropes generally coincide with reproductive activity in both bat species. In female M. schreibersii gonadotrope activity, pituitary LH, and plasma LH levels coincide with development, implantation and gestation. During the delayed implantation gonadotropes are inactive and and high follicular period of plasma LH levels are low, coinciding with corpus luteum inactivity and low plasma progesterone levels. Implantation coincides with increased activity of the gonadotrope activity, increased plasma LH levels, reactivation of the corpus luteum and elevated plasma progesterone levels. Activation of LH gonadotropes towards the end of hibernation may be initiated by the winter solstice, which marks the change to increasing daylength. In female R capensis gonadotrope activity and high pituitary and plasma LH levels occur towards the end of follicular development. During hibernation gonadotrope activity and plasma LH levels decrease. Ovulation coincides with increasing gonadotrope activity (which follows the winter solstice), although a preovulatory peak in plasma LH is not detected. In male M. schreibersii and R. capensis, gonadotrope activity and high plasma LH and testosterone levels coincide with spermatogenesis, except during a period of reproductive inactivity in spring in male M. schreibersii, where gonadotropes appear active and plasma LH and testosterone levels are high. The reason for this apparent activity is not known. Male sperm storage during hibernation in male R. capensis coincides with low gonadotrope activity and low plasma LH and testosterone levels. Factors initiating gonadotrope activity and hence spermatogenesis are probably decreasing daylength (summer solstice) in M. schreibersii and increasing ambient temperatures and food abundance (following the hibernation period) in R.capensis.
- Full Text:
- Date Issued: 1990
- Authors: Bojarski, Christina
- Date: 1990
- Subjects: Bats -- Reproduction
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5589 , http://hdl.handle.net/10962/d1002039
- Description: LH gonadotropes are successfully identified in the anterior pituitary of Minioptems schreibersii and Rhinolophus capensis, using immunogold labelling at the light and electron microscopy level. The gonadotropes are oval to polygonal in shape and possess numerous small secretory granules, which contain LH throughout the year. Their distribution is similar in both species, although the abundance varies slightly between species and sexes. Seasonal changes are detected in gonadotrope ultrastructure, pituitary LH levels, and plasma hormone levels, and activity pattern of LH gonadotropes generally coincide with reproductive activity in both bat species. In female M. schreibersii gonadotrope activity, pituitary LH, and plasma LH levels coincide with development, implantation and gestation. During the delayed implantation gonadotropes are inactive and and high follicular period of plasma LH levels are low, coinciding with corpus luteum inactivity and low plasma progesterone levels. Implantation coincides with increased activity of the gonadotrope activity, increased plasma LH levels, reactivation of the corpus luteum and elevated plasma progesterone levels. Activation of LH gonadotropes towards the end of hibernation may be initiated by the winter solstice, which marks the change to increasing daylength. In female R capensis gonadotrope activity and high pituitary and plasma LH levels occur towards the end of follicular development. During hibernation gonadotrope activity and plasma LH levels decrease. Ovulation coincides with increasing gonadotrope activity (which follows the winter solstice), although a preovulatory peak in plasma LH is not detected. In male M. schreibersii and R. capensis, gonadotrope activity and high plasma LH and testosterone levels coincide with spermatogenesis, except during a period of reproductive inactivity in spring in male M. schreibersii, where gonadotropes appear active and plasma LH and testosterone levels are high. The reason for this apparent activity is not known. Male sperm storage during hibernation in male R. capensis coincides with low gonadotrope activity and low plasma LH and testosterone levels. Factors initiating gonadotrope activity and hence spermatogenesis are probably decreasing daylength (summer solstice) in M. schreibersii and increasing ambient temperatures and food abundance (following the hibernation period) in R.capensis.
- Full Text:
- Date Issued: 1990
Ini ndakuenda mai
- Z. Chimozi and partner, Tracey, Andrew T N
- Authors: Z. Chimozi and partner , Tracey, Andrew T N
- Date: 1990
- Subjects: Nyanja (African people) -- Malawi , Folk music -- Malawi , Mouth bow -- Africa , Percussion instruments -- Africa , Sub-Saharan African music , Africa Malawi Chileka f-sx
- Language: Nyu
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/75287 , vital:30395 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC018-01
- Description: Traditional Chinyungwe song accompanied by kadimbwa mouth bow and rattles.
- Full Text: false
- Date Issued: 1990
- Authors: Z. Chimozi and partner , Tracey, Andrew T N
- Date: 1990
- Subjects: Nyanja (African people) -- Malawi , Folk music -- Malawi , Mouth bow -- Africa , Percussion instruments -- Africa , Sub-Saharan African music , Africa Malawi Chileka f-sx
- Language: Nyu
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/75287 , vital:30395 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC018-01
- Description: Traditional Chinyungwe song accompanied by kadimbwa mouth bow and rattles.
- Full Text: false
- Date Issued: 1990
Initial findings of an investigation into the feasibility of a low level image processing workstation using transputers
- Authors: Cooke, Nicholas Duncan
- Date: 1990 , 2013-02-07
- Subjects: Image processing , Computer graphics , Fourier transformations -- Data processing , Transputers
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4679 , http://hdl.handle.net/10962/d1006702 , Image processing , Computer graphics , Fourier transformations -- Data processing , Transputers
- Description: From Introduction: The research concentrates primarily on a feasibility study involving the setting up of an image processing workstation. As broad as this statement concerning the workstation may seem, there are several factors limiting the extent of the research. This project is not concerned with the design and implementation of a fully-fledged image processing workstation. Rather, it concerns an initial feasibility study of such a workstation, centered on the theme image processing aided by the parallel processing paradigm. In looking at the hardware available for the project, in the context of an image processing environment, a large amount of initial investigation was required prior to that concerned with the transputer and parallel processing. Work was done on the capturing and displaying of images. This formed a vital part of the project. Furthermore, considering that a new architecture was being used as the work horse within a conventional host architecture, the INTEL 80286, several aspects of the host architecture had also to be investigated. These included the actual processing capabilities of the host, the capturing and storing of the images on the host, and most importantly, the interface between the host and the transputer [C0089]. Benchmarking was important in order for good conclusions to be drawn about the viability of the two types of hardware used, both individually and together. On the subject of the transputer as the workhorse, there were several areas whlch required investigation. Initial work had to cover the choice of network topology on whlch the benchmarking of some of the image processing applications were performed. Research into this was based on the previous work of several authors, whlch introduced features relevant to this investigation. The network used for this investigation was chosen to be generally applicable to a broad spectrum of applications in image processing. It was not chosen for its applicability for a single dedicated application, as has been the case for much of the past research performed in image processing [SAN88] [SCH89]. The concept of image processing techniques being implemented on the transputer required careful consideration in respect of what should be implemented. Image processing is not a new subject, and it encompasses a large spectrum of applications. The transputer, with image processing being hlghly suited to it, has attracted a good deal of research. It would not be rash to say that the easy research was covered first. The more trivial operations in image processing, requiring matrix type operations on the pixels attracted, the most coverage. Several researchers in the field of image processing on the transputer have broken the back of this set of problems. Conclusions regarding these operations on the transputer returned a fairly standard answer. An area of image processing which has not produced the same volume of return as that concerning the more trivial operations, is the subject of Fourier Analysis, that is, the Fourier Transform. Thus a major part of this project concerns an investigation into the Fourier Transform in image processing, in particular the Fast Fourier Transform. The network chosen for thls research has placed some constraint upon the degree of parallelism that can be achleved. It should be emphasized that this project is not concerned with the most efficient implementation of a specific image processing algorithm on a dedicated topology. Rather, it looks at the feasibility of a general system in the domain of image processing, concerned with a hlghly computationally intensive operation. This has had the effect of testing the processing power of the hardware used, and contributing a widely applicable parallel algorithm for use in Fourier Analysis. 3 These are discussed more fully in Chapter 2, which covers the work related to tbis project. The results of the investigation are presented along with a discussion of the methods throughout the thesis. The final chapter summarizes the findings of the research, assesses the value of the investigation, and points out areas for future investigation.
- Full Text:
- Date Issued: 1990
- Authors: Cooke, Nicholas Duncan
- Date: 1990 , 2013-02-07
- Subjects: Image processing , Computer graphics , Fourier transformations -- Data processing , Transputers
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4679 , http://hdl.handle.net/10962/d1006702 , Image processing , Computer graphics , Fourier transformations -- Data processing , Transputers
- Description: From Introduction: The research concentrates primarily on a feasibility study involving the setting up of an image processing workstation. As broad as this statement concerning the workstation may seem, there are several factors limiting the extent of the research. This project is not concerned with the design and implementation of a fully-fledged image processing workstation. Rather, it concerns an initial feasibility study of such a workstation, centered on the theme image processing aided by the parallel processing paradigm. In looking at the hardware available for the project, in the context of an image processing environment, a large amount of initial investigation was required prior to that concerned with the transputer and parallel processing. Work was done on the capturing and displaying of images. This formed a vital part of the project. Furthermore, considering that a new architecture was being used as the work horse within a conventional host architecture, the INTEL 80286, several aspects of the host architecture had also to be investigated. These included the actual processing capabilities of the host, the capturing and storing of the images on the host, and most importantly, the interface between the host and the transputer [C0089]. Benchmarking was important in order for good conclusions to be drawn about the viability of the two types of hardware used, both individually and together. On the subject of the transputer as the workhorse, there were several areas whlch required investigation. Initial work had to cover the choice of network topology on whlch the benchmarking of some of the image processing applications were performed. Research into this was based on the previous work of several authors, whlch introduced features relevant to this investigation. The network used for this investigation was chosen to be generally applicable to a broad spectrum of applications in image processing. It was not chosen for its applicability for a single dedicated application, as has been the case for much of the past research performed in image processing [SAN88] [SCH89]. The concept of image processing techniques being implemented on the transputer required careful consideration in respect of what should be implemented. Image processing is not a new subject, and it encompasses a large spectrum of applications. The transputer, with image processing being hlghly suited to it, has attracted a good deal of research. It would not be rash to say that the easy research was covered first. The more trivial operations in image processing, requiring matrix type operations on the pixels attracted, the most coverage. Several researchers in the field of image processing on the transputer have broken the back of this set of problems. Conclusions regarding these operations on the transputer returned a fairly standard answer. An area of image processing which has not produced the same volume of return as that concerning the more trivial operations, is the subject of Fourier Analysis, that is, the Fourier Transform. Thus a major part of this project concerns an investigation into the Fourier Transform in image processing, in particular the Fast Fourier Transform. The network chosen for thls research has placed some constraint upon the degree of parallelism that can be achleved. It should be emphasized that this project is not concerned with the most efficient implementation of a specific image processing algorithm on a dedicated topology. Rather, it looks at the feasibility of a general system in the domain of image processing, concerned with a hlghly computationally intensive operation. This has had the effect of testing the processing power of the hardware used, and contributing a widely applicable parallel algorithm for use in Fourier Analysis. 3 These are discussed more fully in Chapter 2, which covers the work related to tbis project. The results of the investigation are presented along with a discussion of the methods throughout the thesis. The final chapter summarizes the findings of the research, assesses the value of the investigation, and points out areas for future investigation.
- Full Text:
- Date Issued: 1990
Inkomo yotywala
- Nonogcinile, Nomillion and group, Tracey, Andrew T N
- Authors: Nonogcinile, Nomillion and group , Tracey, Andrew T N
- Date: 1990
- Subjects: Xhosa (African people) -- South Africa , Folk music , Claves music , folk dance , Sub-Saharan African music , Africa South Africa Lady Frere f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/93559 , vital:30894 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC028b-03
- Description: Traditional Thembu umngqungqo women's song for girls initiation accompanied by claves.
- Full Text: false
- Date Issued: 1990
- Authors: Nonogcinile, Nomillion and group , Tracey, Andrew T N
- Date: 1990
- Subjects: Xhosa (African people) -- South Africa , Folk music , Claves music , folk dance , Sub-Saharan African music , Africa South Africa Lady Frere f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/93559 , vital:30894 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC028b-03
- Description: Traditional Thembu umngqungqo women's song for girls initiation accompanied by claves.
- Full Text: false
- Date Issued: 1990
Inkosi haiko
- Knowledge and group of Xhosa women, Tracey, Andrew T N
- Authors: Knowledge and group of Xhosa women , Tracey, Andrew T N
- Date: 1990
- Subjects: Xhosa (African people) -- South Africa , Folk music , Hand-clapping music , Drum music , Sub-Saharan African music , Africa South Africa Lady Frere f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/93986 , vital:30979 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC030-13
- Description: Traditional Thembu diviners song (amagqirha) accompanied by drums and clapping.
- Full Text: false
- Date Issued: 1990
- Authors: Knowledge and group of Xhosa women , Tracey, Andrew T N
- Date: 1990
- Subjects: Xhosa (African people) -- South Africa , Folk music , Hand-clapping music , Drum music , Sub-Saharan African music , Africa South Africa Lady Frere f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/93986 , vital:30979 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC030-13
- Description: Traditional Thembu diviners song (amagqirha) accompanied by drums and clapping.
- Full Text: false
- Date Issued: 1990