A quantitative survey of knowledge, attitudes and behaviour, related to AIDS/HIV, among Zulu speaking standard eight high school students
- Authors: Harvey, Brian
- Date: 1997
- Subjects: AIDS (Disease) -- South Africa -- KwaZulu-Natal , AIDS (Disease) -- Social aspects -- South Africa -- KwaZulu-Natal , AIDS (Disease) in adolescence -- South Africa -- KwaZulu-Natal -- Attitudes
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2987 , http://hdl.handle.net/10962/d1002496 , AIDS (Disease) -- South Africa -- KwaZulu-Natal , AIDS (Disease) -- Social aspects -- South Africa -- KwaZulu-Natal , AIDS (Disease) in adolescence -- South Africa -- KwaZulu-Natal -- Attitudes
- Description: AIDS is a serious South African health problem, with HIV infection in KwaZulu-Natal being at the local epidemic's forefront. Adolescents in this province are at additional risk because of their lifestyles. Information on existing risky behaviour and its psychosocial concomitants can provide an important base for educational interventions aimed at reducing further transmission. This study aims to provide baseline information on knowledge, attitudes and reported behaviour, relating to HIV/AIDS, among adolescents in KwaZulu-Natal. A survey, using an anonymous, self-administered questionnaire with closed-ended questions to collect data, was conducted among standard eight Zulu-speaking students (N = 1511) in five parts of the province. The theoretical framework that informed data collection was drawn from the Health Belief Model and Bandura's Social Cognitive Theory. The data generated were first analysed descriptively, providing percentages for responses to individual items. Secondly, cross-tabulations were calculated for relevant items using three independent biographical variables, namely: Locality (rural/peri-urban), gender and students' reports of sexual activity. The results showed inadequate knowledge concerning HIV/AIDS to provide a foundation for developing healthier attitudes. Although most students acknowledged the disease's severity, few reported feeling personally susceptible, denying the immediacy of the threat. Additionally, cues to action and the perceived benefits of adopting preventive behaviours were not influential. Barriers preventing condom use were not primarily logistical, with personal concerns being the main barriers to change. Furthermore, perceived self-efficacy in preventive behaviours was low. Recommendations regarding areas for future research, as well as considerations which will enhance the effectiveness of risk reducing interventions among similar populations, are provided.
- Full Text:
- Date Issued: 1997
- Authors: Harvey, Brian
- Date: 1997
- Subjects: AIDS (Disease) -- South Africa -- KwaZulu-Natal , AIDS (Disease) -- Social aspects -- South Africa -- KwaZulu-Natal , AIDS (Disease) in adolescence -- South Africa -- KwaZulu-Natal -- Attitudes
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2987 , http://hdl.handle.net/10962/d1002496 , AIDS (Disease) -- South Africa -- KwaZulu-Natal , AIDS (Disease) -- Social aspects -- South Africa -- KwaZulu-Natal , AIDS (Disease) in adolescence -- South Africa -- KwaZulu-Natal -- Attitudes
- Description: AIDS is a serious South African health problem, with HIV infection in KwaZulu-Natal being at the local epidemic's forefront. Adolescents in this province are at additional risk because of their lifestyles. Information on existing risky behaviour and its psychosocial concomitants can provide an important base for educational interventions aimed at reducing further transmission. This study aims to provide baseline information on knowledge, attitudes and reported behaviour, relating to HIV/AIDS, among adolescents in KwaZulu-Natal. A survey, using an anonymous, self-administered questionnaire with closed-ended questions to collect data, was conducted among standard eight Zulu-speaking students (N = 1511) in five parts of the province. The theoretical framework that informed data collection was drawn from the Health Belief Model and Bandura's Social Cognitive Theory. The data generated were first analysed descriptively, providing percentages for responses to individual items. Secondly, cross-tabulations were calculated for relevant items using three independent biographical variables, namely: Locality (rural/peri-urban), gender and students' reports of sexual activity. The results showed inadequate knowledge concerning HIV/AIDS to provide a foundation for developing healthier attitudes. Although most students acknowledged the disease's severity, few reported feeling personally susceptible, denying the immediacy of the threat. Additionally, cues to action and the perceived benefits of adopting preventive behaviours were not influential. Barriers preventing condom use were not primarily logistical, with personal concerns being the main barriers to change. Furthermore, perceived self-efficacy in preventive behaviours was low. Recommendations regarding areas for future research, as well as considerations which will enhance the effectiveness of risk reducing interventions among similar populations, are provided.
- Full Text:
- Date Issued: 1997
A new species of the flatfish genus Chascanopsetta (Pleuronectiformes: Bothidae), from the coasts of Kenya and Somalia with comments on C.lugubris
- Hensley, Dannie A, Smale, Malcolm J, J.L.B. Smith Institute of Ichthyology
- Authors: Hensley, Dannie A , Smale, Malcolm J , J.L.B. Smith Institute of Ichthyology
- Date: 1997-12
- Subjects: Fishes -- Indian Ocean , Flatfishes -- Indian Ocean
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70987 , vital:29768 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 59 , Six species of the genus Chascanopsetta are currently recognized. Recent work on otolith morphology from specimens identified as C. lugubris raised the possibility that three forms of C. lugubris are found in the western Indian Ocean. Re-examination of the voucher specimens showed that one of these forms is a new species, C. kenyaensis, from Kenya and Somalia. The other two forms may show differences in otolith morphology due to ontogeny. The new species most closely resembles C. prorigera from the Hawaiian Archipelago, Emperor Seamounts, and the western North Atlantic. These two species differ in lateral-line scale counts, body depth, upper-jaw length, and coloration. Many comparative specimens of C. lugubris were examined. It was found that this species’ distribution rounds the Cape of Good Hope from the southwestern Indian Ocean into the southeastern Atlantic. Specimens from this southern African region show higher dorsal- and anal-fin ray counts than those from more northern areas in the Atlantic, western Pacific, and Indian oceans. There is some indication that what some authors refer to as the Indo-West Pacific subspecies C. lugubris lugubris rounds the Cape of Good Hope and also occurs in parts of the eastern Atlantic. A more thorough comparison of C. lugubris from different regions is needed.
- Full Text:
- Date Issued: 1997-12
- Authors: Hensley, Dannie A , Smale, Malcolm J , J.L.B. Smith Institute of Ichthyology
- Date: 1997-12
- Subjects: Fishes -- Indian Ocean , Flatfishes -- Indian Ocean
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70987 , vital:29768 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 59 , Six species of the genus Chascanopsetta are currently recognized. Recent work on otolith morphology from specimens identified as C. lugubris raised the possibility that three forms of C. lugubris are found in the western Indian Ocean. Re-examination of the voucher specimens showed that one of these forms is a new species, C. kenyaensis, from Kenya and Somalia. The other two forms may show differences in otolith morphology due to ontogeny. The new species most closely resembles C. prorigera from the Hawaiian Archipelago, Emperor Seamounts, and the western North Atlantic. These two species differ in lateral-line scale counts, body depth, upper-jaw length, and coloration. Many comparative specimens of C. lugubris were examined. It was found that this species’ distribution rounds the Cape of Good Hope from the southwestern Indian Ocean into the southeastern Atlantic. Specimens from this southern African region show higher dorsal- and anal-fin ray counts than those from more northern areas in the Atlantic, western Pacific, and Indian oceans. There is some indication that what some authors refer to as the Indo-West Pacific subspecies C. lugubris lugubris rounds the Cape of Good Hope and also occurs in parts of the eastern Atlantic. A more thorough comparison of C. lugubris from different regions is needed.
- Full Text:
- Date Issued: 1997-12
A new species of Bothus (Pleuronectiformes: Bothidae) from Mozambique
- Hensley, Dannie A, J.L.B. Smith Institute of Ichthyology
- Authors: Hensley, Dannie A , J.L.B. Smith Institute of Ichthyology
- Date: 1997-02
- Subjects: Fishes -- Mozambique
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70976 , vital:29767 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 58 , Bothus swio is described based on one adult male specimen collected off the coast of Mozambique. Males of this species appear to differ from all known congeners because of their narrow interobital region. Other characters useful for its identification are lack of ocular appendages, relative positions of the anterior margins of the eyes, number of lateral-line scales, length and colour pattern of the ocular-side pectoral fin, lack of orbital spines, dorsal- and anal-fin ray counts, and lack of colour pattern on the blind side. Bothus swio most closely resembles B. pantherinus and B. tricirrhitus.
- Full Text:
- Date Issued: 1997-02
- Authors: Hensley, Dannie A , J.L.B. Smith Institute of Ichthyology
- Date: 1997-02
- Subjects: Fishes -- Mozambique
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70976 , vital:29767 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 58 , Bothus swio is described based on one adult male specimen collected off the coast of Mozambique. Males of this species appear to differ from all known congeners because of their narrow interobital region. Other characters useful for its identification are lack of ocular appendages, relative positions of the anterior margins of the eyes, number of lateral-line scales, length and colour pattern of the ocular-side pectoral fin, lack of orbital spines, dorsal- and anal-fin ray counts, and lack of colour pattern on the blind side. Bothus swio most closely resembles B. pantherinus and B. tricirrhitus.
- Full Text:
- Date Issued: 1997-02
The role of interpreters in medical communication in the Eastern Cape
- Authors: Hobson, Carol Bonnin
- Date: 1997
- Subjects: Translating and interpreting -- South Africa -- Eastern Cape , Communication in medicine -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2349 , http://hdl.handle.net/10962/d1002631 , Translating and interpreting -- South Africa -- Eastern Cape , Communication in medicine -- South Africa -- Eastern Cape
- Description: This study aimed to investigate the role of the interpreter in medical communication in the Eastern Cape. This role was found to be a complex and varied one. Interpreters do not only change the words of one language into equivalent words in the other language, but act as advisers, explainers, cultural mediators, supervisors and advocates of the patient. In order to fulfil these functions, they communicate independently within the medical consultation and do not merely interpret what has been said by each participant. Rather, they tailor the message to the participants and the situation by adding to the message, omitting parts of it and changing it where necessary. This does not happen in an arbitrary fashion, but is subject to influence from a number of non-linguistic and linguistic contextual factors. These factors are discussed in this study and included in a suggested model of the interpreted medical consultation, which differs from other models of interpreting which were found to be more adequate for the-situation of conference interpreting than for community interpreting, of which medical interpreting is an example. Data was collected from interviews with interpreters and patients apd from interviews and questionnaires given to medical professionals. The results suggest that using trained medical interpreters in the interpreted medical consultation may solve some of the problems that arise and medical professienals should be encouraged to, learn the languages of their patients to alleviate some of the misunderstanding which occurs. The study also raises questions about the way in which we view interpreting and shows that community interpreting does not always observe the ideals envisaged by theories of interpreting.
- Full Text:
- Date Issued: 1997
- Authors: Hobson, Carol Bonnin
- Date: 1997
- Subjects: Translating and interpreting -- South Africa -- Eastern Cape , Communication in medicine -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2349 , http://hdl.handle.net/10962/d1002631 , Translating and interpreting -- South Africa -- Eastern Cape , Communication in medicine -- South Africa -- Eastern Cape
- Description: This study aimed to investigate the role of the interpreter in medical communication in the Eastern Cape. This role was found to be a complex and varied one. Interpreters do not only change the words of one language into equivalent words in the other language, but act as advisers, explainers, cultural mediators, supervisors and advocates of the patient. In order to fulfil these functions, they communicate independently within the medical consultation and do not merely interpret what has been said by each participant. Rather, they tailor the message to the participants and the situation by adding to the message, omitting parts of it and changing it where necessary. This does not happen in an arbitrary fashion, but is subject to influence from a number of non-linguistic and linguistic contextual factors. These factors are discussed in this study and included in a suggested model of the interpreted medical consultation, which differs from other models of interpreting which were found to be more adequate for the-situation of conference interpreting than for community interpreting, of which medical interpreting is an example. Data was collected from interviews with interpreters and patients apd from interviews and questionnaires given to medical professionals. The results suggest that using trained medical interpreters in the interpreted medical consultation may solve some of the problems that arise and medical professienals should be encouraged to, learn the languages of their patients to alleviate some of the misunderstanding which occurs. The study also raises questions about the way in which we view interpreting and shows that community interpreting does not always observe the ideals envisaged by theories of interpreting.
- Full Text:
- Date Issued: 1997
Theories of exchange rates and the methodology of economics
- Authors: Hodge, Duncan
- Date: 1997
- Subjects: Foreign exchange rates Economics -- Methodology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:1012 , http://hdl.handle.net/10962/d1002747
- Description: This thesis is an exercise in applied methodology. Ideas in the history and philosophy of science which have proved to be influential in the methodology of economics, and in shaping economists' self-image in this regard, are selected for closer analysis and criticism. The main ideas that are addressed are those of empiricism, with emphasis on the methodological falsificationism of Karl Popper and Imre Lakatos, and Laudan's problem solving model of scientific progress . The thesis examines the relationship between empirical evidence, in the form of both econometric test results and stylized facts, and the development of theories about exchange rates and the open economy. This analysis begins with Cassel's formulation of purchasing power parity theory in 1916, through the elasticities, absorption, and Mundell-Fleming models of exchange rates and the balance of payments, up to the present day monetary and asset market models. This is done with regard to the broad methodological issues examined earlier in the thesis. Some of the main empirical and methodological difficulties in testing such theories are addressed, with particular reference to the role played by the Duhem-Quine thesis and the ceteris paribus assumption. Although some of these difficulties may be regarded as a matter of degree compared to similar problems in the natural sciences, it is argued that this difference is significant for the workability of falsification in economics . Moreover, the presence of hypotheses about expectations in many economic theories appears to be a substantive difference such that the difficulties posed by the Duhem-Quine thesis apply with much greater force in a social science like economics. The main conclusions are that neither the Popperian nor Lakatosian versions of falsification are seriously practiced in the area of exchange rate economics and that, unlike the position taken by advocates of falsification such as Mark Blaug, it would be inappropriate and misguided to do so. A tentative case is made, with some reference to the theories surveyed in this thesis, for the possibly greater relevance of Laudan' s more pragmatic problem solving model for the methodology of economics, particularly as regards his analysis and emphasis on conceptual problem solving in the progress of knowledge.
- Full Text:
- Date Issued: 1997
- Authors: Hodge, Duncan
- Date: 1997
- Subjects: Foreign exchange rates Economics -- Methodology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:1012 , http://hdl.handle.net/10962/d1002747
- Description: This thesis is an exercise in applied methodology. Ideas in the history and philosophy of science which have proved to be influential in the methodology of economics, and in shaping economists' self-image in this regard, are selected for closer analysis and criticism. The main ideas that are addressed are those of empiricism, with emphasis on the methodological falsificationism of Karl Popper and Imre Lakatos, and Laudan's problem solving model of scientific progress . The thesis examines the relationship between empirical evidence, in the form of both econometric test results and stylized facts, and the development of theories about exchange rates and the open economy. This analysis begins with Cassel's formulation of purchasing power parity theory in 1916, through the elasticities, absorption, and Mundell-Fleming models of exchange rates and the balance of payments, up to the present day monetary and asset market models. This is done with regard to the broad methodological issues examined earlier in the thesis. Some of the main empirical and methodological difficulties in testing such theories are addressed, with particular reference to the role played by the Duhem-Quine thesis and the ceteris paribus assumption. Although some of these difficulties may be regarded as a matter of degree compared to similar problems in the natural sciences, it is argued that this difference is significant for the workability of falsification in economics . Moreover, the presence of hypotheses about expectations in many economic theories appears to be a substantive difference such that the difficulties posed by the Duhem-Quine thesis apply with much greater force in a social science like economics. The main conclusions are that neither the Popperian nor Lakatosian versions of falsification are seriously practiced in the area of exchange rate economics and that, unlike the position taken by advocates of falsification such as Mark Blaug, it would be inappropriate and misguided to do so. A tentative case is made, with some reference to the theories surveyed in this thesis, for the possibly greater relevance of Laudan' s more pragmatic problem solving model for the methodology of economics, particularly as regards his analysis and emphasis on conceptual problem solving in the progress of knowledge.
- Full Text:
- Date Issued: 1997
Belethe
- Hogsback festival participants, Composer not specified, Dargie, Dave
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345998 , vital:63340 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349b-02
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345998 , vital:63340 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349b-02
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
Icamagu livumile
- Hogsback festival participants, Ntsikana, Dargie, Dave
- Authors: Hogsback festival participants , Ntsikana , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345905 , vital:63330 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-01
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
- Authors: Hogsback festival participants , Ntsikana , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345905 , vital:63330 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-01
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
Yaka Yaka Ndemka
- Hogsback festival participants, Composer not specified, Dargie, Dave
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345946 , vital:63335 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-06
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345946 , vital:63335 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-06
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
Icamagu livumile
- Hogsback festival participants, Thukani, M. J., Dargie, Dave
- Authors: Hogsback festival participants , Thukani, M. J. , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345971 , vital:63337 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-08
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
- Authors: Hogsback festival participants , Thukani, M. J. , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345971 , vital:63337 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-08
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
Somagwaza
- Hogsback festival participants, Composer not specified, Dargie, Dave
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345976 , vital:63338 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-09
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345976 , vital:63338 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-09
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
Bayeza kusasa
- Hogsback festival participants, Composer not specified, Dargie, Dave
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/346003 , vital:63341 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349b-03
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/346003 , vital:63341 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349b-03
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
Nomyayi
- Hogsback festival participants, Composer not specified, Dargie, Dave
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345936 , vital:63333 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-04
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345936 , vital:63333 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-04
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
Title not specified
- Hogsback festival participants, Composer not specified, Dargie, Dave
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345993 , vital:63339 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349b-01
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345993 , vital:63339 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349b-01
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
Cengeletshani
- Hogsback festival participants, Souma, N, Dargie, Dave
- Authors: Hogsback festival participants , Souma, N , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345923 , vital:63332 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-03
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
- Authors: Hogsback festival participants , Souma, N , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345923 , vital:63332 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-03
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
Umngqokolo
- Hogsback festival participants, Thukani, M. J., Dargie, Dave
- Authors: Hogsback festival participants , Thukani, M. J. , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345956 , vital:63336 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-07
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
- Authors: Hogsback festival participants , Thukani, M. J. , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345956 , vital:63336 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-07
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
Zinyanya zami nivumela ntoni
- Hogsback festival participants, Composer not specified, Dargie, Dave
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/346020 , vital:63342 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349b-04
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/346020 , vital:63342 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349b-04
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
Yaka Yaka Ndemka
- Hogsback festival participants, Souma, N, Dargie, Dave
- Authors: Hogsback festival participants , Souma, N , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345918 , vital:63331 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-02
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
- Authors: Hogsback festival participants , Souma, N , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345918 , vital:63331 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-02
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
Ahomna
- Hogsback festival participants, Composer not specified, Dargie, Dave
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345941 , vital:63334 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-05
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
- Authors: Hogsback festival participants , Composer not specified , Dargie, Dave
- Date: 1997
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Hogsback sa
- Language: IsiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/345941 , vital:63334 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC349a-05
- Description: Xhosa music at Hogsback festival
- Full Text: false
- Date Issued: 1997
A collated digital, geological map database for the central Namaqua Province using geographical information system technology
- Authors: Holland, Henry
- Date: 1997
- Subjects: Geographic information systems , Namaqua Province (South Africa) -- Maps Databases , Geology Maps , Cartography
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4936 , http://hdl.handle.net/10962/d1005548 , Geographic information systems , Namaqua Province (South Africa) -- Maps Databases , Geology Maps , Cartography
- Description: The genlogy of the Namaqua Province is notoriously difficult to map and interpret due to polymetamorphic and multiple deformation events and limlted outcrop. Current maps of the Province reflect diverse interpretations of stratigraphy as a consequence of these difficulties. A Geographic Information System is essentially a digital database and a set of functions and procedures to capture, analyse and manipulate spatially related data. A GIS is therefore ideally suited to the study and analysis of maps. A digital map database was established, using modem GIS technology, to facilitate the collation of existing maps of an area in the Central Namaqua Province (CNP). This database is based on a lithological classification system similar to that used by Harris (1992), rather than on an interpretive stratigraphic model. In order to establish the database, existing geological maps were scanned into a GIS, and lines of outcrop and lithological contacts were digitised using a manual line following process, which is one of the functions native to a GIS. Attribute data were then attached to the resultant polygons. The attribute database consists of lithological, textural and mineralogical data, as well as stratigraphical classification data according to the South African Committee for Stratigraphy (SACS), correlative names assigned to units by the Precambrian Research Unit, the Geological Survey of South Africa, the Bushmanland Research group and the University of the Orange Free State. Other attribute data included in the database, are tectonic and absolute age information, and the terrane classification for the area. This database reflects the main objective of the project and also serves as a basis for further expansion of a geological GIS for the CNP. Cartographic and database capabilities of the GIS were employed to produce a collated lithological map of the CNP. A TNTmipsTM Spatial Manipulation Language routine was written to produce a database containing two fields linked to each polygon, one for lithology and one for a correlation probability factor. Correlation factors are calculated in this routine from three variables, namely the prominence a worker attached to a specific lithology within a unit or outcrop, the agreement amongst the various workers on the actual lithology present within an outcrop, and the correspondence between the source of the spatial element (mapped outcrop) and the source of the attribute data attached to it. Outcrops were displayed on the map according to the lithology with the highest correlation factor, providing a unique view of the spatial relationships and distribution patterns of lithological units in the CNP. A second map was produced indicating the correlation factors for lithologies within the CNP. Thematic maps are produced in a GIS by selecting spatial elements according to a set of criteria, usually based on the attribute database, and then displaying the elements as maps. Maps created by this process are known as customised maps, since users of the GIS can customise the selection and display of elements according to their needs. For instance, all outcrops of rock units containing particular lithologies of a given age occurring in a specific terrane can be displayed - either on screen or printed out as a map. The database also makes it possible to plot maps according to different stratigraphic classification systems. Areas where various workers disagree on the stratigraphic classification of units can be isolated, and displayed as separate maps in order to aid in the collation process. The database can assist SACS in identifying areas in the CNP where stratigraphic classification is still lacking or agreements on stratigraphic nomenclature have not yet been attained. More than one database can be attached to the spatial elements in a GIS, and the Namaqua-GIS can therefore be expanded to include geochemical, geophysical, economic, structural and geographical data. Other data on the area, such as more detailed maps, photographs and satellite images can be attached to the lithological map database in the correct spatial relationship. Another advantage of a GIS is the facility to continually update the database(s) as more information becomes available and/or as interpretation of the area is refined.
- Full Text:
- Date Issued: 1997
- Authors: Holland, Henry
- Date: 1997
- Subjects: Geographic information systems , Namaqua Province (South Africa) -- Maps Databases , Geology Maps , Cartography
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4936 , http://hdl.handle.net/10962/d1005548 , Geographic information systems , Namaqua Province (South Africa) -- Maps Databases , Geology Maps , Cartography
- Description: The genlogy of the Namaqua Province is notoriously difficult to map and interpret due to polymetamorphic and multiple deformation events and limlted outcrop. Current maps of the Province reflect diverse interpretations of stratigraphy as a consequence of these difficulties. A Geographic Information System is essentially a digital database and a set of functions and procedures to capture, analyse and manipulate spatially related data. A GIS is therefore ideally suited to the study and analysis of maps. A digital map database was established, using modem GIS technology, to facilitate the collation of existing maps of an area in the Central Namaqua Province (CNP). This database is based on a lithological classification system similar to that used by Harris (1992), rather than on an interpretive stratigraphic model. In order to establish the database, existing geological maps were scanned into a GIS, and lines of outcrop and lithological contacts were digitised using a manual line following process, which is one of the functions native to a GIS. Attribute data were then attached to the resultant polygons. The attribute database consists of lithological, textural and mineralogical data, as well as stratigraphical classification data according to the South African Committee for Stratigraphy (SACS), correlative names assigned to units by the Precambrian Research Unit, the Geological Survey of South Africa, the Bushmanland Research group and the University of the Orange Free State. Other attribute data included in the database, are tectonic and absolute age information, and the terrane classification for the area. This database reflects the main objective of the project and also serves as a basis for further expansion of a geological GIS for the CNP. Cartographic and database capabilities of the GIS were employed to produce a collated lithological map of the CNP. A TNTmipsTM Spatial Manipulation Language routine was written to produce a database containing two fields linked to each polygon, one for lithology and one for a correlation probability factor. Correlation factors are calculated in this routine from three variables, namely the prominence a worker attached to a specific lithology within a unit or outcrop, the agreement amongst the various workers on the actual lithology present within an outcrop, and the correspondence between the source of the spatial element (mapped outcrop) and the source of the attribute data attached to it. Outcrops were displayed on the map according to the lithology with the highest correlation factor, providing a unique view of the spatial relationships and distribution patterns of lithological units in the CNP. A second map was produced indicating the correlation factors for lithologies within the CNP. Thematic maps are produced in a GIS by selecting spatial elements according to a set of criteria, usually based on the attribute database, and then displaying the elements as maps. Maps created by this process are known as customised maps, since users of the GIS can customise the selection and display of elements according to their needs. For instance, all outcrops of rock units containing particular lithologies of a given age occurring in a specific terrane can be displayed - either on screen or printed out as a map. The database also makes it possible to plot maps according to different stratigraphic classification systems. Areas where various workers disagree on the stratigraphic classification of units can be isolated, and displayed as separate maps in order to aid in the collation process. The database can assist SACS in identifying areas in the CNP where stratigraphic classification is still lacking or agreements on stratigraphic nomenclature have not yet been attained. More than one database can be attached to the spatial elements in a GIS, and the Namaqua-GIS can therefore be expanded to include geochemical, geophysical, economic, structural and geographical data. Other data on the area, such as more detailed maps, photographs and satellite images can be attached to the lithological map database in the correct spatial relationship. Another advantage of a GIS is the facility to continually update the database(s) as more information becomes available and/or as interpretation of the area is refined.
- Full Text:
- Date Issued: 1997
Biologically active natural products from South African marine invertebrates
- Authors: Hooper, Gregory John
- Date: 1997
- Subjects: Natural products -- South Africa Marine metabolites -- South Africa Marine invertebrates -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3761 , http://hdl.handle.net/10962/d1003239
- Description: This thesis describes the chemical and biological investigation of the extracts of six different marine invertebrate organisms collected along the South African coastline. The work on these extracts has resulted in the isolation and structural elucidation of twenty-one previously undescribed secondary metabolites; The history of marine natural product chemistry in South Africa has not previously been reviewed and so a comprehensive review covering the literature from the 1940's up until the end of 1995 is presented here. The marine ascidian Pseudodistoma species collected in the Tsitsikamma Marine Reserve was shown to contain four new unsaturated amino alcohols [47], [48], [49] and [50] which were isolated as their acetyl derivatives. These compounds exhibited strong antimicrobial activity. Four new pyrroloiminoquinone alkaloids, the tsitsikammamines A [90] to D [93],were isolated from a new genus of Latrunculid sponge collected in the Tsitsikamma Marine Reserve. These highly pigmented compounds also possessed strong antimicrobial activity. An investigation of two phenotypic colour variants of the soft coral Capnella thyrsoidea resulted in the isolation of the known steroid 5α-pregna-1, 20-dien-3-one [97] and an additional six new metabolites, 16β-hydroxy-5α-pregna-1 ,20-dien-3-one 16-acetate [98], 3α,16β-dihydroxy-5α-pregna-1, 20-diene 3,16-diacetate [99] and four xenicane diterpenes, the tsitsixenicins A [100] to D [103]. This is the first reported isolation of xenicane diterpenes from the soft coral family Nephtheiidae. Tsitsixenicin A and B showed good anti-inflammatory activity by inhibiting superoxide production in both rabbit and human cell neutrophils. A further four new metabolites were isolated from two soft corals which could only be identified to the genus level and were designated Alcyonium species A and species B. Alcyonium species A was collected in the Tsitsikamma Marine Reserve and yielded two new polyhydroxysterols, cholest-5-ene-3β, 7β, 19-triol 19-acetate [121] and cholest-5,24-diene-3β, 7β, 19-triol 19-acetate [122]. The soft coral Alcyonium species B was collected off Aliwal Shoal and was found to contain two known xenicane diterpenes, 9-deacetoxy-14, 15-deepoxyxeniculin [110] and zahavin A [16], and two new xenicane diterpenes, 7 -epoxyzahavin A [123] and xeniolide C [124]. Compounds [110], [16] and [123] exhibited strong anti-inflammatory activity and compounds [110] and [16] showed good antithrombotic activity. The endemic soft coral A/cyanium fauri collected at Riet Point near Port Alfred yielded the new sesquiterpene hydroquinone rietone [141] in high yierd, fogether with the minor compounds 8'-acetoxyrietone [142] and 8'-desoxyrietone [143]. Rietone exhibited moderate activity in the NCl's in-vitro anti-HIV bioassays.
- Full Text:
- Date Issued: 1997
- Authors: Hooper, Gregory John
- Date: 1997
- Subjects: Natural products -- South Africa Marine metabolites -- South Africa Marine invertebrates -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3761 , http://hdl.handle.net/10962/d1003239
- Description: This thesis describes the chemical and biological investigation of the extracts of six different marine invertebrate organisms collected along the South African coastline. The work on these extracts has resulted in the isolation and structural elucidation of twenty-one previously undescribed secondary metabolites; The history of marine natural product chemistry in South Africa has not previously been reviewed and so a comprehensive review covering the literature from the 1940's up until the end of 1995 is presented here. The marine ascidian Pseudodistoma species collected in the Tsitsikamma Marine Reserve was shown to contain four new unsaturated amino alcohols [47], [48], [49] and [50] which were isolated as their acetyl derivatives. These compounds exhibited strong antimicrobial activity. Four new pyrroloiminoquinone alkaloids, the tsitsikammamines A [90] to D [93],were isolated from a new genus of Latrunculid sponge collected in the Tsitsikamma Marine Reserve. These highly pigmented compounds also possessed strong antimicrobial activity. An investigation of two phenotypic colour variants of the soft coral Capnella thyrsoidea resulted in the isolation of the known steroid 5α-pregna-1, 20-dien-3-one [97] and an additional six new metabolites, 16β-hydroxy-5α-pregna-1 ,20-dien-3-one 16-acetate [98], 3α,16β-dihydroxy-5α-pregna-1, 20-diene 3,16-diacetate [99] and four xenicane diterpenes, the tsitsixenicins A [100] to D [103]. This is the first reported isolation of xenicane diterpenes from the soft coral family Nephtheiidae. Tsitsixenicin A and B showed good anti-inflammatory activity by inhibiting superoxide production in both rabbit and human cell neutrophils. A further four new metabolites were isolated from two soft corals which could only be identified to the genus level and were designated Alcyonium species A and species B. Alcyonium species A was collected in the Tsitsikamma Marine Reserve and yielded two new polyhydroxysterols, cholest-5-ene-3β, 7β, 19-triol 19-acetate [121] and cholest-5,24-diene-3β, 7β, 19-triol 19-acetate [122]. The soft coral Alcyonium species B was collected off Aliwal Shoal and was found to contain two known xenicane diterpenes, 9-deacetoxy-14, 15-deepoxyxeniculin [110] and zahavin A [16], and two new xenicane diterpenes, 7 -epoxyzahavin A [123] and xeniolide C [124]. Compounds [110], [16] and [123] exhibited strong anti-inflammatory activity and compounds [110] and [16] showed good antithrombotic activity. The endemic soft coral A/cyanium fauri collected at Riet Point near Port Alfred yielded the new sesquiterpene hydroquinone rietone [141] in high yierd, fogether with the minor compounds 8'-acetoxyrietone [142] and 8'-desoxyrietone [143]. Rietone exhibited moderate activity in the NCl's in-vitro anti-HIV bioassays.
- Full Text:
- Date Issued: 1997