An annotated checklist of the species of the Labroid fish families Labridae and Scaridae
- Parenti, Paolo, Randall, John E, 1924-
- Authors: Parenti, Paolo , Randall, John E, 1924-
- Date: 2000
- Language: English
- Type: Text
- Identifier: vital:15028 , http://hdl.handle.net/10962/d1019894 , ISSN 0073-4381 , Ichthyological Bulletin J.L.B. Smith Institute of Ichthyology; No. 68
- Description: An annotated checklist of the species of the fish families Labridae and Scaridae is presented; 541 valid species are recognized, including 68 genera and 453 species of labrids and 10 genera and 88 species of scarids. Thirty undescribed species of wrasses and two undescribed parrotfish species are also included. A list of nominal species is given, with their present assignments; nominal species of uncertain status are placed as incertae sedis and listed separately. A list of nomina nuda is also provided. The valid genera and species are listed alphabetically, with their synonyms and distributions. Examination of the original descriptions and type material (when extant) of previously unplaced nominal species of labroid fishes led to identification of 69 new synonyms. The generic names Artisia de Beaufort, 1939 and Emmeekia Jordan & Evermann, 1896 are here recognized as new synonyms of Halichoeres Ruppell, 1835. For the Labridae, 65 new synonyms of valid species are listed. Labrus psittaculus Richardson, 1840, a valid species of Pseudolabrus, is a primary homonym of Labrus psittaculus Lacepede, 1801; the next available name for this species is Labrichthys rubicunda Macleay, 1881 and the new combination Pseudolabrus rubicundus is proposed. The following new combinations are included: Pseudojulis inornatus Gilbert, 1890 is a valid species of Pseudojuloides; Xyrichtys perlas Wellington et al., 1994 is a valid species of Novaculichthys. For Scaridae, Sparus abildgaardi Bloch, 1791 is a senior synonym of Sparisoma chrysopterum (Bloch & Schneider, 1801), but a request of the International Commission has been made to reject abildgaardi in order to conserve S. chrysopterum; and Scarus visayanus Herre, 1933 is a new synonym of Scarus tricolor Bleeker, 1847. Pseudoscarus microcheilos Bleeker, 1861 is a synonym of Chlorurus strongylocephalus (Bleeker, 1854). , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 2000
- Authors: Parenti, Paolo , Randall, John E, 1924-
- Date: 2000
- Language: English
- Type: Text
- Identifier: vital:15028 , http://hdl.handle.net/10962/d1019894 , ISSN 0073-4381 , Ichthyological Bulletin J.L.B. Smith Institute of Ichthyology; No. 68
- Description: An annotated checklist of the species of the fish families Labridae and Scaridae is presented; 541 valid species are recognized, including 68 genera and 453 species of labrids and 10 genera and 88 species of scarids. Thirty undescribed species of wrasses and two undescribed parrotfish species are also included. A list of nominal species is given, with their present assignments; nominal species of uncertain status are placed as incertae sedis and listed separately. A list of nomina nuda is also provided. The valid genera and species are listed alphabetically, with their synonyms and distributions. Examination of the original descriptions and type material (when extant) of previously unplaced nominal species of labroid fishes led to identification of 69 new synonyms. The generic names Artisia de Beaufort, 1939 and Emmeekia Jordan & Evermann, 1896 are here recognized as new synonyms of Halichoeres Ruppell, 1835. For the Labridae, 65 new synonyms of valid species are listed. Labrus psittaculus Richardson, 1840, a valid species of Pseudolabrus, is a primary homonym of Labrus psittaculus Lacepede, 1801; the next available name for this species is Labrichthys rubicunda Macleay, 1881 and the new combination Pseudolabrus rubicundus is proposed. The following new combinations are included: Pseudojulis inornatus Gilbert, 1890 is a valid species of Pseudojuloides; Xyrichtys perlas Wellington et al., 1994 is a valid species of Novaculichthys. For Scaridae, Sparus abildgaardi Bloch, 1791 is a senior synonym of Sparisoma chrysopterum (Bloch & Schneider, 1801), but a request of the International Commission has been made to reject abildgaardi in order to conserve S. chrysopterum; and Scarus visayanus Herre, 1933 is a new synonym of Scarus tricolor Bleeker, 1847. Pseudoscarus microcheilos Bleeker, 1861 is a synonym of Chlorurus strongylocephalus (Bleeker, 1854). , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 2000
Acanthurus tristis, a valid Indian Ocean surgeonfish (Perciformes: Acanthuridae)
- Randall, John E, 1924-, J.L.B. Smith Institute of Ichthyology
- Authors: Randall, John E, 1924- , J.L.B. Smith Institute of Ichthyology
- Date: 1993-01
- Subjects: Surgeonfishes , Fishes -- South Africa
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70933 , vital:29762 , 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. 54 , After examination of Col. Tickell’s unpublished manuscript and colour paintings of Burmese fishes, Day (1888) listed the surgeonfish Acanthurus tristis Tickell as a synonym of A. tennentii Gunther (1861); he gave the dorsal-fin spine count of 8 and provided a colour description, including mention of a white margin on the caudal fin. Of the species of Acanthurus, only A. pyroferus Kittlitz from the Pacific has 8 dorsal spines. Randall (1956a) treated tristis as a synonym of this pecies; the differences in colouration between tristis and pyroferus were regarded as within the range of variability of the latter. Both forms were observed together in Bali in 1982-1991. A. tristis is therefore regarded as a valid species and is redescribed. In the interest of stability of nomenclature, a neotype for A. tristis is designated.
- Full Text:
- Date Issued: 1993-01
- Authors: Randall, John E, 1924- , J.L.B. Smith Institute of Ichthyology
- Date: 1993-01
- Subjects: Surgeonfishes , Fishes -- South Africa
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70933 , vital:29762 , 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. 54 , After examination of Col. Tickell’s unpublished manuscript and colour paintings of Burmese fishes, Day (1888) listed the surgeonfish Acanthurus tristis Tickell as a synonym of A. tennentii Gunther (1861); he gave the dorsal-fin spine count of 8 and provided a colour description, including mention of a white margin on the caudal fin. Of the species of Acanthurus, only A. pyroferus Kittlitz from the Pacific has 8 dorsal spines. Randall (1956a) treated tristis as a synonym of this pecies; the differences in colouration between tristis and pyroferus were regarded as within the range of variability of the latter. Both forms were observed together in Bali in 1982-1991. A. tristis is therefore regarded as a valid species and is redescribed. In the interest of stability of nomenclature, a neotype for A. tristis is designated.
- Full Text:
- Date Issued: 1993-01
Additions to the fish fauna of the Maldives Islands
- Adam, Shiham, Merrett, Nigel R, Anderson, R Charles, Randall, John E, 1924-, Kuiter, Rudie H
- Authors: Adam, Shiham , Merrett, Nigel R , Anderson, R Charles , Randall, John E, 1924- , Kuiter, Rudie H
- Date: 1998
- Language: English
- Type: Text
- Identifier: vital:15030 , http://hdl.handle.net/10962/d1019905 , ISSN 0073-4381 , Ichthyological Bulletin of the J.L.B. Smith Institute of Ichthyology; No. 67
- Description: Part 1: We report here information on the occurrence of the deep demersal fish species known to date from the Maldivian Exclusive Economic Zone below a depth of 180 m. Collections of Maldivian deep demersal fishes are held by The Natural History Museum, London (BMNH); the Bernice P. Bishop Museum, Honolulu; the Field Museum of Natural History, Chicago; the Marine Research Section, Ministry of Fisheries and Agriculture, Male, Republic of Maldives; the South African Museum, Cape Town; and the Zoological Survey of India, at the Indian Museum, Calcutta. Specimens from all of these institutions have been studied by the authors. In addition, the authors carried out sampling of the slope shark fishery during March - April 1996, which resulted in a significant new collection of shark material. A total of 99 deep demersal species are reported here which includes 36 new records for the Maldives. The six most speciose families are the Macrouridae (7 species), Congridae (5), Lutjanidae (5), Squalidae (4), Ogocephalidae (4) and Halosauridae (4). , Part 2: Seventy-eight fish species are recorded from the Maldives for the first time. A further 30, which have been recorded in the literature but not included in previous reviews of Maldivian fishes, are listed. The total known shore and epipelagic fish fauna of the Maldives now stands at 1007 species. The total known demersal and epipelagic fish fauna is raised to 1090. , Rhodes University Libraries (Digitisation)
- Full Text:
- Authors: Adam, Shiham , Merrett, Nigel R , Anderson, R Charles , Randall, John E, 1924- , Kuiter, Rudie H
- Date: 1998
- Language: English
- Type: Text
- Identifier: vital:15030 , http://hdl.handle.net/10962/d1019905 , ISSN 0073-4381 , Ichthyological Bulletin of the J.L.B. Smith Institute of Ichthyology; No. 67
- Description: Part 1: We report here information on the occurrence of the deep demersal fish species known to date from the Maldivian Exclusive Economic Zone below a depth of 180 m. Collections of Maldivian deep demersal fishes are held by The Natural History Museum, London (BMNH); the Bernice P. Bishop Museum, Honolulu; the Field Museum of Natural History, Chicago; the Marine Research Section, Ministry of Fisheries and Agriculture, Male, Republic of Maldives; the South African Museum, Cape Town; and the Zoological Survey of India, at the Indian Museum, Calcutta. Specimens from all of these institutions have been studied by the authors. In addition, the authors carried out sampling of the slope shark fishery during March - April 1996, which resulted in a significant new collection of shark material. A total of 99 deep demersal species are reported here which includes 36 new records for the Maldives. The six most speciose families are the Macrouridae (7 species), Congridae (5), Lutjanidae (5), Squalidae (4), Ogocephalidae (4) and Halosauridae (4). , Part 2: Seventy-eight fish species are recorded from the Maldives for the first time. A further 30, which have been recorded in the literature but not included in previous reviews of Maldivian fishes, are listed. The total known shore and epipelagic fish fauna of the Maldives now stands at 1007 species. The total known demersal and epipelagic fish fauna is raised to 1090. , Rhodes University Libraries (Digitisation)
- Full Text:
Agreement and coordination in XiTsonga, SeSotho and IsiXhosa: an optimality theoretic perspective
- Authors: Mitchley, Hazel
- Date: 2016
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/3423 , vital:20491
- Description: This thesis provides a unified Optimality Theoretic analysis of subject-verb agreement with coordinated preverbal subjects in three Southern Bantu languages: Xitsonga (S53), Sesotho (S33), and isiXhosa (S41). This analysis is then used to formulate a typology of agreement resolution strategies and the contexts which trigger them. Although some accounts in the Bantu literature suggest that agreement with coordinate structures is avoided by speakers (e.g. Schadeberg 1992, Voeltz 1971) especially when conjuncts are from different noun classes, I show that there is ample evidence to the contrary, and that the subject marker used is dependent on several factors, including (i) the [-HUMAN] specification on the conjuncts, (ii) whether the conjuncts are singular or plural, (iii) whether or not the conjuncts both carry the same noun class feature, and (iv) the order of the conjuncts. This thesis shows that there are various agreement resolution strategies which can beused: 1) agreement with the [+HUMAN] feature on the conjuncts, 2) agreement with the[-HUMAN] feature on the conjuncts, 3) agreement with the noun class feature on both conjuncts, 4) agreement with the noun class feature on the conjunct closest to the verb, and 5) agreement with the noun class feature on the conjunct furthest from the verb. Not all of these strategies are used by all languages, nor are these strategies interchangeable in the languages which do use them – instead, multiple factors conspire to trigger the use of a specific agreement strategy within a specific agreement featural context. I show that these effects can be captured using Optimality Theory (Prince and Smolensky 2004). The analysis makes use of seven constraints: RES#, MAX[+H], MAX[-H], DEP[-H], MAXNC, DEPNC, and AGREECLOSEST. The hierarchical ranking of these constraints not only accounts for the confinement of particular strategies to specific agreement featural contexts within a language, but also accounts for the cross-linguistic differences in the use of these strategies. I end off by examining the typological implications which follow from the OT analysis provided in this thesis.
- Full Text:
- Date Issued: 2016
- Authors: Mitchley, Hazel
- Date: 2016
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/3423 , vital:20491
- Description: This thesis provides a unified Optimality Theoretic analysis of subject-verb agreement with coordinated preverbal subjects in three Southern Bantu languages: Xitsonga (S53), Sesotho (S33), and isiXhosa (S41). This analysis is then used to formulate a typology of agreement resolution strategies and the contexts which trigger them. Although some accounts in the Bantu literature suggest that agreement with coordinate structures is avoided by speakers (e.g. Schadeberg 1992, Voeltz 1971) especially when conjuncts are from different noun classes, I show that there is ample evidence to the contrary, and that the subject marker used is dependent on several factors, including (i) the [-HUMAN] specification on the conjuncts, (ii) whether the conjuncts are singular or plural, (iii) whether or not the conjuncts both carry the same noun class feature, and (iv) the order of the conjuncts. This thesis shows that there are various agreement resolution strategies which can beused: 1) agreement with the [+HUMAN] feature on the conjuncts, 2) agreement with the[-HUMAN] feature on the conjuncts, 3) agreement with the noun class feature on both conjuncts, 4) agreement with the noun class feature on the conjunct closest to the verb, and 5) agreement with the noun class feature on the conjunct furthest from the verb. Not all of these strategies are used by all languages, nor are these strategies interchangeable in the languages which do use them – instead, multiple factors conspire to trigger the use of a specific agreement strategy within a specific agreement featural context. I show that these effects can be captured using Optimality Theory (Prince and Smolensky 2004). The analysis makes use of seven constraints: RES#, MAX[+H], MAX[-H], DEP[-H], MAXNC, DEPNC, and AGREECLOSEST. The hierarchical ranking of these constraints not only accounts for the confinement of particular strategies to specific agreement featural contexts within a language, but also accounts for the cross-linguistic differences in the use of these strategies. I end off by examining the typological implications which follow from the OT analysis provided in this thesis.
- Full Text:
- Date Issued: 2016
A multi-threading software countermeasure to mitigate side channel analysis in the time domain
- Authors: Frieslaar, Ibraheem
- Date: 2019
- Subjects: Computer security , Data encryption (Computer science) , Noise generators (Electronics)
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/71152 , vital:29790
- Description: This research is the first of its kind to investigate the utilisation of a multi-threading software-based countermeasure to mitigate Side Channel Analysis (SCA) attacks, with a particular focus on the AES-128 cryptographic algorithm. This investigation is novel, as there has not been a software-based countermeasure relying on multi-threading to our knowledge. The research has been tested on the Atmel microcontrollers, as well as a more fully featured system in the form of the popular Raspberry Pi that utilises the ARM7 processor. The main contributions of this research is the introduction of a multi-threading software based countermeasure used to mitigate SCA attacks on both an embedded device and a Raspberry Pi. These threads are comprised of various mathematical operations which are utilised to generate electromagnetic (EM) noise resulting in the obfuscation of the execution of the AES-128 algorithm. A novel EM noise generator known as the FRIES noise generator is implemented to obfuscate data captured in the EM field. FRIES comprises of hiding the execution of AES-128 algorithm within the EM noise generated by the 512 Secure Hash Algorithm (SHA) from the libcrypto++ and OpenSSL libraries. In order to evaluate the proposed countermeasure, a novel attack methodology was developed where the entire secret AES-128 encryption key was recovered from a Raspberry Pi, which has not been achieved before. The FRIES noise generator was pitted against this new attack vector and other known noise generators. The results exhibited that the FRIES noise generator withstood this attack whilst other existing techniques still leaked out secret information. The visual location of the AES-128 encryption algorithm in the EM spectrum and key recovery was prevented. These results demonstrated that the proposed multi-threading software based countermeasure was able to be resistant to existing and new forms of attacks, thus verifying that a multi-threading software based countermeasure can serve to mitigate SCA attacks.
- Full Text:
- Date Issued: 2019
- Authors: Frieslaar, Ibraheem
- Date: 2019
- Subjects: Computer security , Data encryption (Computer science) , Noise generators (Electronics)
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/71152 , vital:29790
- Description: This research is the first of its kind to investigate the utilisation of a multi-threading software-based countermeasure to mitigate Side Channel Analysis (SCA) attacks, with a particular focus on the AES-128 cryptographic algorithm. This investigation is novel, as there has not been a software-based countermeasure relying on multi-threading to our knowledge. The research has been tested on the Atmel microcontrollers, as well as a more fully featured system in the form of the popular Raspberry Pi that utilises the ARM7 processor. The main contributions of this research is the introduction of a multi-threading software based countermeasure used to mitigate SCA attacks on both an embedded device and a Raspberry Pi. These threads are comprised of various mathematical operations which are utilised to generate electromagnetic (EM) noise resulting in the obfuscation of the execution of the AES-128 algorithm. A novel EM noise generator known as the FRIES noise generator is implemented to obfuscate data captured in the EM field. FRIES comprises of hiding the execution of AES-128 algorithm within the EM noise generated by the 512 Secure Hash Algorithm (SHA) from the libcrypto++ and OpenSSL libraries. In order to evaluate the proposed countermeasure, a novel attack methodology was developed where the entire secret AES-128 encryption key was recovered from a Raspberry Pi, which has not been achieved before. The FRIES noise generator was pitted against this new attack vector and other known noise generators. The results exhibited that the FRIES noise generator withstood this attack whilst other existing techniques still leaked out secret information. The visual location of the AES-128 encryption algorithm in the EM spectrum and key recovery was prevented. These results demonstrated that the proposed multi-threading software based countermeasure was able to be resistant to existing and new forms of attacks, thus verifying that a multi-threading software based countermeasure can serve to mitigate SCA attacks.
- Full Text:
- Date Issued: 2019
Fishes of the family Pseudochromidae (Perciformes) in the Western Indian Ocean (with plates 1-5); and a note on Anisochromis Kenya
- Lubbock, Roger, Smith, Margaret Mary
- Authors: Lubbock, Roger , Smith, Margaret Mary
- Date: 1977
- Subjects: Pseudochromidae -- Indian Ocean , Marine fishes -- Indian Ocean
- Language: English
- Type: Text
- Identifier: vital:14987 , http://hdl.handle.net/10962/d1018955 , Ichthyological Bulletin of the J.L.B. Smith Institute of Ichthyology; No. 35
- Description: An account is given of pseudochromid fishes from the western Indian Ocean. Seven species of Pseudochromis (four of which are new) and six species of Chlidichthys (three of which are new) are recorded and described, with details of ecology. Keys are provided. , This note lists specimens caught to date and increase in distribution of Anisochromis kenyae. Two colour illustrations demonstrate the sexual dichromatism. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1977
- Authors: Lubbock, Roger , Smith, Margaret Mary
- Date: 1977
- Subjects: Pseudochromidae -- Indian Ocean , Marine fishes -- Indian Ocean
- Language: English
- Type: Text
- Identifier: vital:14987 , http://hdl.handle.net/10962/d1018955 , Ichthyological Bulletin of the J.L.B. Smith Institute of Ichthyology; No. 35
- Description: An account is given of pseudochromid fishes from the western Indian Ocean. Seven species of Pseudochromis (four of which are new) and six species of Chlidichthys (three of which are new) are recorded and described, with details of ecology. Keys are provided. , This note lists specimens caught to date and increase in distribution of Anisochromis kenyae. Two colour illustrations demonstrate the sexual dichromatism. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1977
An assessment of the nutritional status of young black school children in the Albany Magisterial District, Eastern Cape
- Authors: Fincham, Robert John
- Date: 1981
- Subjects: Schools -- South Africa -- Grahamstown Africans -- Nutrition Nutrition surveys -- South Africa -- Eastern Cape Malnutrition -- South Africa -- Eastern Cape Children -- South Africa -- Nutrition
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2172 , vital:20262 , ISBN 0868100773
- Description: This working paper covers a survey conducted between 16 and 30 January 1980 of 3 171 black Sub A and Sub B pupils 8 years old or younger, at schools in both the rural and urban areas of the Albany Magisterial District, Eastern Cape. The survey, under the auspices of the Institute of Social and Economic Research (ISER), Rhodes University, was carried out as a result of a request from Dr J. D. Krynauw, Regional Director of Health Services in the Eastern Cape, to assess levels of nutrition of black children. Newspaper reports (see Appendix 1) of low levels of nutrition and high infant mortality rates among young black children in the Eastern Cape appeared to suggest a chronic nutritional situation, a situation not perceived as such by the Department of Health. A comprehensive pilot study was instituted on written request from Dr Krynauw in late October 1979. A report of the pilot study findings was presented in May 1980 to the Department of Health (Fincham, 1980). The present paper elaborates on that report and also includes analyses of data not presented before. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1981
- Authors: Fincham, Robert John
- Date: 1981
- Subjects: Schools -- South Africa -- Grahamstown Africans -- Nutrition Nutrition surveys -- South Africa -- Eastern Cape Malnutrition -- South Africa -- Eastern Cape Children -- South Africa -- Nutrition
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2172 , vital:20262 , ISBN 0868100773
- Description: This working paper covers a survey conducted between 16 and 30 January 1980 of 3 171 black Sub A and Sub B pupils 8 years old or younger, at schools in both the rural and urban areas of the Albany Magisterial District, Eastern Cape. The survey, under the auspices of the Institute of Social and Economic Research (ISER), Rhodes University, was carried out as a result of a request from Dr J. D. Krynauw, Regional Director of Health Services in the Eastern Cape, to assess levels of nutrition of black children. Newspaper reports (see Appendix 1) of low levels of nutrition and high infant mortality rates among young black children in the Eastern Cape appeared to suggest a chronic nutritional situation, a situation not perceived as such by the Department of Health. A comprehensive pilot study was instituted on written request from Dr Krynauw in late October 1979. A report of the pilot study findings was presented in May 1980 to the Department of Health (Fincham, 1980). The present paper elaborates on that report and also includes analyses of data not presented before. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1981
Black urban employment and Coloured labour preference
- Bekker, S B, Coetzee, Johannes Hendrik
- Authors: Bekker, S B , Coetzee, Johannes Hendrik
- Date: 1980
- Subjects: Black people -- Employment -- South Africa -- Cape Town Colored people (South Africa) -- Employment -- South Africa -- Cape Town Labor supply -- South Africa -- Cape Town Health services administration -- South Africa
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2216 , vital:20266 , ISBN 0868100420
- Description: State control over the labour market usually results in the creation of different categories of labour, each having partial and unequal access to that market. In the Third World, typically, justification for control arises from an over-supply of unskilled rural labour and a small demand for such labour in the wage economy. To reduce massive urban unemployment, the state attempts to control the process of rural-urban migration by, inter alia, manipulating the labour market. ^ In South Africa, the civilised labour policy of the Pact government and the highly sophisticated system of black influx control introduced after the Second World War are two examples of such state control. In these cases, racial categories of labour, having differential access to the labour market, were created. The policy of Coloured Labour Preference is another South African example which is of particular interest since it is applied solely to one region of the Republic. Since 1962, when it was administratively coordinated for the first time, this policy has been applied in the Western Cape, a region comprising the 68 magisterial districts situated south-west of Port Elizabeth, Kimberley and the Orange River. In this region, black work-seekers' access to the labour market is severely curtailed. A series of regulations, particular to the Western Cape, are applied with the object of restricting the number of blacks resident in the region; denying blacks permanent rights of sojourn in the region; restricting the scope of employment for blacks in the region; and favouring coloured above black work-seekers throughout the region. In short, the policy aims to replace black by coloured labour and thereby aims to reduce to a minimum the number of blacks in the region. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1980
- Authors: Bekker, S B , Coetzee, Johannes Hendrik
- Date: 1980
- Subjects: Black people -- Employment -- South Africa -- Cape Town Colored people (South Africa) -- Employment -- South Africa -- Cape Town Labor supply -- South Africa -- Cape Town Health services administration -- South Africa
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2216 , vital:20266 , ISBN 0868100420
- Description: State control over the labour market usually results in the creation of different categories of labour, each having partial and unequal access to that market. In the Third World, typically, justification for control arises from an over-supply of unskilled rural labour and a small demand for such labour in the wage economy. To reduce massive urban unemployment, the state attempts to control the process of rural-urban migration by, inter alia, manipulating the labour market. ^ In South Africa, the civilised labour policy of the Pact government and the highly sophisticated system of black influx control introduced after the Second World War are two examples of such state control. In these cases, racial categories of labour, having differential access to the labour market, were created. The policy of Coloured Labour Preference is another South African example which is of particular interest since it is applied solely to one region of the Republic. Since 1962, when it was administratively coordinated for the first time, this policy has been applied in the Western Cape, a region comprising the 68 magisterial districts situated south-west of Port Elizabeth, Kimberley and the Orange River. In this region, black work-seekers' access to the labour market is severely curtailed. A series of regulations, particular to the Western Cape, are applied with the object of restricting the number of blacks resident in the region; denying blacks permanent rights of sojourn in the region; restricting the scope of employment for blacks in the region; and favouring coloured above black work-seekers throughout the region. In short, the policy aims to replace black by coloured labour and thereby aims to reduce to a minimum the number of blacks in the region. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1980
Who goes to parliament?
- Authors: Stultz, Newell Maynard
- Date: 1975
- Subjects: Legislators -- South Africa South Africa -- Politics and government -- 1948-1994 South Africa -- Politics and government
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2747 , vital:20322 , ISBN 0949980560
- Description: The focus here is upon the 1 169 white men and the twelve white women who were elected or nominated to the South African Parliament in Cape Town between 1910 and the conclusion of the 1970 general and Senate elections.1 Because of the integrated nature of government at the national level in South Africa, an examination of all parliamentarians concurrently produces information on all cabinet ministers during the same period, and for most if not all of the top leaders of the major political parties as well. Hence, recognizing the unitary structure of the South African regime - sometimes expressed in the principle of the 'sovereignty of Parliament' - it seems possible to designate these 1 181 persons as the formally ascendant South African political elite during the country's first six decades. Moreover, there is no reason to doubt that this number includes nearly all of the persons who exercised disproportionately great real power during these years, excepting, of course, those few non-whites who may be thought to have been politically influential at the national level. Every indication is that political life in South Africa centred on these individuals, or at least on some of them, for clearly not all were of equal political importance. Yet even the leaders within this select group, whom we shall also consider separately in detail, frequently (although not in every case) rose to prominence within the institution of Parliament, in part on the basis of their ability to influence and control its deliberations. An understanding of the backgrounds of all parliamentarians thus not only helps to describe the body itself, but may also contribute a new appreciation of the political power of the country's top leadership. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1975
- Authors: Stultz, Newell Maynard
- Date: 1975
- Subjects: Legislators -- South Africa South Africa -- Politics and government -- 1948-1994 South Africa -- Politics and government
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2747 , vital:20322 , ISBN 0949980560
- Description: The focus here is upon the 1 169 white men and the twelve white women who were elected or nominated to the South African Parliament in Cape Town between 1910 and the conclusion of the 1970 general and Senate elections.1 Because of the integrated nature of government at the national level in South Africa, an examination of all parliamentarians concurrently produces information on all cabinet ministers during the same period, and for most if not all of the top leaders of the major political parties as well. Hence, recognizing the unitary structure of the South African regime - sometimes expressed in the principle of the 'sovereignty of Parliament' - it seems possible to designate these 1 181 persons as the formally ascendant South African political elite during the country's first six decades. Moreover, there is no reason to doubt that this number includes nearly all of the persons who exercised disproportionately great real power during these years, excepting, of course, those few non-whites who may be thought to have been politically influential at the national level. Every indication is that political life in South Africa centred on these individuals, or at least on some of them, for clearly not all were of equal political importance. Yet even the leaders within this select group, whom we shall also consider separately in detail, frequently (although not in every case) rose to prominence within the institution of Parliament, in part on the basis of their ability to influence and control its deliberations. An understanding of the backgrounds of all parliamentarians thus not only helps to describe the body itself, but may also contribute a new appreciation of the political power of the country's top leadership. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1975
The eucharist in St John's Gospel : an examination of the extent to which it is justifiable to see allusions to the eucharist in St John's Gospel
- Authors: Verryn, Paul
- Date: 1979
- Subjects: Bible -- John -- Commentaries Lord's Supper
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1229 , http://hdl.handle.net/10962/d1007273
- Description: This thesis shows that the incarnation of Jesus Christ is an ever present reality for St. John. Christ's abiding presence is known to those who are committed to him because he is their Saviour and Lord. This presence is especially real when his disciples, the believers, the Church gather for worship. In the eucharist, which is an act of worship, the meaning and purpose of the incarnation becomes apparent for St. Paul. By showing that aspects of John's understanding of the incarnation co-incide with the early Church's doctrine of eucharist (as portrayed by St. Paul) the conclusion is reached that we have eucharistic allusions in the gospel of John. Furthermore, John presents Jesus in contrast to the Old Covenant. Jesus supersedes the Old Covenant and establishes the new covenant of love. Just as the Old Covenant was celebrated in the Passover, so the eucharist re-enacts the new covenant. By alluding to the old sacrament, John shows how the eucharist fulfils the true meaning of Passover. After a brief examination of existing methodologies, I present the working hypothesis for this dissertation as outlined above. In a fairly detailed exegesis of Jn 6 (with digressions to other relevant passages in John) which is divided into three sections (In 6:1-21 6:22-48, 6:49-71), I have tried to show that John sees the eucharist as a celebration which emphasises the community of the church, which re-enacts God's great demonstration of love (typified especially in the death of Jesus) and which foreshadows that great heavenly banquet, when, all will be gathered to him. I reach the conclusion therefore that we are justified in finding allusions in the eucharist in the gospel of John.
- Full Text:
- Date Issued: 1979
- Authors: Verryn, Paul
- Date: 1979
- Subjects: Bible -- John -- Commentaries Lord's Supper
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1229 , http://hdl.handle.net/10962/d1007273
- Description: This thesis shows that the incarnation of Jesus Christ is an ever present reality for St. John. Christ's abiding presence is known to those who are committed to him because he is their Saviour and Lord. This presence is especially real when his disciples, the believers, the Church gather for worship. In the eucharist, which is an act of worship, the meaning and purpose of the incarnation becomes apparent for St. Paul. By showing that aspects of John's understanding of the incarnation co-incide with the early Church's doctrine of eucharist (as portrayed by St. Paul) the conclusion is reached that we have eucharistic allusions in the gospel of John. Furthermore, John presents Jesus in contrast to the Old Covenant. Jesus supersedes the Old Covenant and establishes the new covenant of love. Just as the Old Covenant was celebrated in the Passover, so the eucharist re-enacts the new covenant. By alluding to the old sacrament, John shows how the eucharist fulfils the true meaning of Passover. After a brief examination of existing methodologies, I present the working hypothesis for this dissertation as outlined above. In a fairly detailed exegesis of Jn 6 (with digressions to other relevant passages in John) which is divided into three sections (In 6:1-21 6:22-48, 6:49-71), I have tried to show that John sees the eucharist as a celebration which emphasises the community of the church, which re-enacts God's great demonstration of love (typified especially in the death of Jesus) and which foreshadows that great heavenly banquet, when, all will be gathered to him. I reach the conclusion therefore that we are justified in finding allusions in the eucharist in the gospel of John.
- Full Text:
- Date Issued: 1979
Border port : a study of East London, South Africa, with special reference to the white population
- Watts, H L, Agar-Hamilton, J A I
- Authors: Watts, H L , Agar-Hamilton, J A I
- Date: 1970
- Subjects: East London (South Africa) -- Economic conditions East London (South Africa) -- Social conditions
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2824 , vital:20329
- Description: While there are studies of the Border region, which give a picture of the economic, industrial, and physical features of the dominant centre of East London and of its Bantu population, no detailed study of the White population of the city had, prior to 1954, been published. So it was that in 1964 the present study was commenced as primarily a sociological analysis of the White population of East London. It was designed to deal with this gap in our knowledge of the region. The study includes a description of the historical development of the city, and some reference to its regional setting. The White population of the city is analysed in some detail. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1970
- Authors: Watts, H L , Agar-Hamilton, J A I
- Date: 1970
- Subjects: East London (South Africa) -- Economic conditions East London (South Africa) -- Social conditions
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2824 , vital:20329
- Description: While there are studies of the Border region, which give a picture of the economic, industrial, and physical features of the dominant centre of East London and of its Bantu population, no detailed study of the White population of the city had, prior to 1954, been published. So it was that in 1964 the present study was commenced as primarily a sociological analysis of the White population of East London. It was designed to deal with this gap in our knowledge of the region. The study includes a description of the historical development of the city, and some reference to its regional setting. The White population of the city is analysed in some detail. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1970
Fishes of the family Apogonidae of the Western Indian Ocean and the Red Sea
- Smith, J.L.B. (James Leonard Brierley), 1897-1968
- Authors: Smith, J.L.B. (James Leonard Brierley), 1897-1968
- Date: 1961
- Subjects: Cardinalfishes , Fishes -- Classification , Fishes -- Indian Ocean , Fishes -- Red Sea
- Language: English
- Type: Text
- Identifier: vital:14985 , http://hdl.handle.net/10962/d1018952 , Ichthyological Bulletin; No. 22
- Description: Fishes of the family Apogonidae of the Western Indian Ocean and the Red Sea. Small and relatively feeble as most of these fishes are many cover an astonishing range. Some are found over truly vast areas of the Indo-Pacific, ranging from Southern Africa to the mid-Pacific. As a result, workers on even mid-Pacific Apogonidae need to give heed to the fauna of the Red Sea and of the Western Indian Ocean, from where, as in the case of the Parrot fishes, many early types were described. Failure to do this has caused species from the Pacific described as new, later to be proved identical with those long known from the Red Sea or the Indian Ocean. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1961
- Authors: Smith, J.L.B. (James Leonard Brierley), 1897-1968
- Date: 1961
- Subjects: Cardinalfishes , Fishes -- Classification , Fishes -- Indian Ocean , Fishes -- Red Sea
- Language: English
- Type: Text
- Identifier: vital:14985 , http://hdl.handle.net/10962/d1018952 , Ichthyological Bulletin; No. 22
- Description: Fishes of the family Apogonidae of the Western Indian Ocean and the Red Sea. Small and relatively feeble as most of these fishes are many cover an astonishing range. Some are found over truly vast areas of the Indo-Pacific, ranging from Southern Africa to the mid-Pacific. As a result, workers on even mid-Pacific Apogonidae need to give heed to the fauna of the Red Sea and of the Western Indian Ocean, from where, as in the case of the Parrot fishes, many early types were described. Failure to do this has caused species from the Pacific described as new, later to be proved identical with those long known from the Red Sea or the Indian Ocean. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1961
Development and assessment of gastric-retentive sustained release metronidazole microcapsules
- Authors: Makan, Anjana
- Date: 2017
- Subjects: Metronidazole , Drug delivery systems , Helicobacter pylori , High performance liquid chromatography , Gas chromatography , Drugs , Drugs Controlled release
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/59240 , vital:27491
- Description: Helicobacter pylori is one of the most common pathogenic bacterial infections and is the leading cause of gastritis, gastroduodenal ulcer disease and gastric cancers. Studies have revealed the prevalence of Helicobacter pylori is high in many countries around the globe. Although Helicobacter pylori is highly sensitive to antimicrobial agents in vitro the clinical eradication rate of the disease is still low. The instability of API at gastric pH, low concentration of API in the gastric mucosa and short gastric residence times are the main reasons for poor eradication rates. The high prevalence rate of this disease necessitates the design and development of gastric-retentive site specific oral dosage forms for the optimized delivery of existing therapeutic molecules and may be an approach to improving the eradication rate of Helicobacter pylori. Metronidazole (MTZ) is a 5-nitroimidazole derivative that exhibits antibiotic and antiprotozoal activity. MTZ is used in combination with other compounds for the treatment of Helicobacter pylori in peptic ulcer disease. MTZ is a potential candidate for inclusion in a sustained release gastric-retentive delivery system that acts in the stomach and since it is unstable in the intestinal/colonic environment enhancing gastric residence time would be a therapeutic advantage. MTZ is a cost-effective therapy that exhibits good anti-microbial activity and has a favourable pharmacokinetic profile. A sustained release gastric-retentive formulation is therefore proposed as an approach to enhance the local delivery of MTZ and improve treatment outcomes for patients infected with Helicobacter pylori. A stability indicating Reversed-Phase High Performance Liquid Chromatography (RP- HPLC) method for the quantitation of MTZ in pharmaceutical dosage forms was developed and optimised using a Central Composite Design (CCD) approach. The RP-HPLC method was found to be linear, accurate, precise, sensitive, selective, and was applied to the analysis of MTZ in commercially available medicines. Preformulation studies were conducted as preparative work prior to manufacture gastric- retentive sustained release MTZ microcapsules. The experiments conducted were tailored for the development of sustained release MTZ microcapsules using a solvent evaporation method. The particle size and shape of the microcapsules was investigated using Scanning Electron Microscopy (SEM). MTZ- excipient compatibility studies were performed using Fourier Transform Infra-red Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC) and X-Ray Diffraction (XRD). The results revealed that no definite interaction between MTZ and intended excipients to be used for manufacture of MTZ formulations occurred. A solvent evaporation procedure was used for the manufacture of MTZ microcapsules. Preliminary formulations were manufactured using two different grades of Methocel® at various levels. In addition the impact of processing parameters on performance was also investigated. The formulations were assessed in terms of in vitro release, buoyancy, yield, encapsulation efficiency and microcapsule size. Formulation optimisation was undertaken using a CCD approach and numerical optimisation was used to predict an optimised formulation composition that would produce minimal initial MTZ release, maximum MTZ release at 12 hours and maximum buoyancy, encapsulation efficiency and yield. The kinetics of MTZ release from microcapsules was established by fitting in vitro release data to different mathematical models. Higuchi model and first-order model appeared to best fit the data as majority of the formulation batches had highest R2 values for these models. Short-term stability assessment of the optimised formulation was established by undertaking stability studies at 25°C/60% RH and 40°C/75%RH. No significant changes in any of the CQA were observed over 30 days of stability testing. A gas chromatographic (GC) method was developed and validated for the quantitation of residual acetone and n-hexane. The optimised formulation contained 213.60 ppm/g acetone and 25.23 ppm/g n-hexane which are well below the limits set for residual solvents. In conclusion, gastric-retentive sustained release MTZ microcapsules with potential for further development and optimisation have been successfully developed and assessed in these studies. , Thesis (MSc) -- Faculty of Pharmacy, Pharmacy, 2017
- Full Text:
- Date Issued: 2017
- Authors: Makan, Anjana
- Date: 2017
- Subjects: Metronidazole , Drug delivery systems , Helicobacter pylori , High performance liquid chromatography , Gas chromatography , Drugs , Drugs Controlled release
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/59240 , vital:27491
- Description: Helicobacter pylori is one of the most common pathogenic bacterial infections and is the leading cause of gastritis, gastroduodenal ulcer disease and gastric cancers. Studies have revealed the prevalence of Helicobacter pylori is high in many countries around the globe. Although Helicobacter pylori is highly sensitive to antimicrobial agents in vitro the clinical eradication rate of the disease is still low. The instability of API at gastric pH, low concentration of API in the gastric mucosa and short gastric residence times are the main reasons for poor eradication rates. The high prevalence rate of this disease necessitates the design and development of gastric-retentive site specific oral dosage forms for the optimized delivery of existing therapeutic molecules and may be an approach to improving the eradication rate of Helicobacter pylori. Metronidazole (MTZ) is a 5-nitroimidazole derivative that exhibits antibiotic and antiprotozoal activity. MTZ is used in combination with other compounds for the treatment of Helicobacter pylori in peptic ulcer disease. MTZ is a potential candidate for inclusion in a sustained release gastric-retentive delivery system that acts in the stomach and since it is unstable in the intestinal/colonic environment enhancing gastric residence time would be a therapeutic advantage. MTZ is a cost-effective therapy that exhibits good anti-microbial activity and has a favourable pharmacokinetic profile. A sustained release gastric-retentive formulation is therefore proposed as an approach to enhance the local delivery of MTZ and improve treatment outcomes for patients infected with Helicobacter pylori. A stability indicating Reversed-Phase High Performance Liquid Chromatography (RP- HPLC) method for the quantitation of MTZ in pharmaceutical dosage forms was developed and optimised using a Central Composite Design (CCD) approach. The RP-HPLC method was found to be linear, accurate, precise, sensitive, selective, and was applied to the analysis of MTZ in commercially available medicines. Preformulation studies were conducted as preparative work prior to manufacture gastric- retentive sustained release MTZ microcapsules. The experiments conducted were tailored for the development of sustained release MTZ microcapsules using a solvent evaporation method. The particle size and shape of the microcapsules was investigated using Scanning Electron Microscopy (SEM). MTZ- excipient compatibility studies were performed using Fourier Transform Infra-red Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC) and X-Ray Diffraction (XRD). The results revealed that no definite interaction between MTZ and intended excipients to be used for manufacture of MTZ formulations occurred. A solvent evaporation procedure was used for the manufacture of MTZ microcapsules. Preliminary formulations were manufactured using two different grades of Methocel® at various levels. In addition the impact of processing parameters on performance was also investigated. The formulations were assessed in terms of in vitro release, buoyancy, yield, encapsulation efficiency and microcapsule size. Formulation optimisation was undertaken using a CCD approach and numerical optimisation was used to predict an optimised formulation composition that would produce minimal initial MTZ release, maximum MTZ release at 12 hours and maximum buoyancy, encapsulation efficiency and yield. The kinetics of MTZ release from microcapsules was established by fitting in vitro release data to different mathematical models. Higuchi model and first-order model appeared to best fit the data as majority of the formulation batches had highest R2 values for these models. Short-term stability assessment of the optimised formulation was established by undertaking stability studies at 25°C/60% RH and 40°C/75%RH. No significant changes in any of the CQA were observed over 30 days of stability testing. A gas chromatographic (GC) method was developed and validated for the quantitation of residual acetone and n-hexane. The optimised formulation contained 213.60 ppm/g acetone and 25.23 ppm/g n-hexane which are well below the limits set for residual solvents. In conclusion, gastric-retentive sustained release MTZ microcapsules with potential for further development and optimisation have been successfully developed and assessed in these studies. , Thesis (MSc) -- Faculty of Pharmacy, Pharmacy, 2017
- Full Text:
- Date Issued: 2017
Leadership development within a learner representative council: a Namibian primary school case study
- Authors: Tjihuro, Jaqueline
- Date: 2018
- Subjects: School management and organization Namibia , Educational leadership Namibia , Student participation in administration Namibia , Student government Namibia
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/61558 , vital:28036
- Description: Learners in Namibian primary schools are seemingly not brave enough to stand and raise their voice on issues that concern them. This is what Shekupakela-Nelulu (2008) wrote after a study she conducted on the Learners’ Representative Council (LRC) of a school in Namibia. She refers to a time when “the involvement of students in school affairs was seen by the regime as a political act and attempts by student leaders to involve themselves in educational issues were often quashed” (ibid., p. i). This situation will be all too familiar to South African readers, where a public holiday, Youth Day, was declared to mark the apartheid regime’s brutal treatment of learner protestors on June 16, 1976. While Namibia has not experienced events of such magnitude, the notion of learner voice is equally problematic and worthy of investigation. The absence of leadership development opportunities for learners has led to this research study which seeks to answer the central research question: How can learner leadership be developed in a LRC? I used an interpretive paradigm, adopting a qualitative approach in the study. Concurrently, the study was framed and guided by the second generation of Cultural Historical Activity Theory (CHAT) as an analytical tool to achieve my research goal. The following questions guided the study in two phases. Phase one: What were the perceived causes for the nonsustainability of the learner leadership (LL) club at the school? Phase two: How is the notion of learner leadership understood in the school? How is leadership developed on the LRC? What enables and constrains leadership development of learners on the LRC? The research participants were thirty LRC members from grades 6 and 7 and15 teachers who teach the LRC members. The principal and three HOD’s were also research participants being part of the Senior Management team. One of the HOD’s also fulfils the role of the guardian teacher to the LRC. A school board chairperson also participated in the Change Laboratory Workshop. Data was generated through multiple data sources such as questionnaires, individual interviews, a focus group interview and observation. The findings from phase one of the study revealed that the learner leadership club’s intervention was a success during the 2014 academic year, but the absence of the learner leadership club as an extra-mural activity affected the sustainability of the club into the next academic year 2015. Findings from phase two revealed that leadership opportunities did exist at the school for learner leadership development. However, a few challenges emerged relating to traditional views of leadership and constraining factors that could affect learner leadership development at the school. Thus, Change Laboratory workshops were held to find solutions to the challenges, in order to promote and enhance learner leadership development, hopefully for the future of the Namibian child.
- Full Text:
- Date Issued: 2018
Leadership development within a learner representative council: a Namibian primary school case study
- Authors: Tjihuro, Jaqueline
- Date: 2018
- Subjects: School management and organization Namibia , Educational leadership Namibia , Student participation in administration Namibia , Student government Namibia
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/61558 , vital:28036
- Description: Learners in Namibian primary schools are seemingly not brave enough to stand and raise their voice on issues that concern them. This is what Shekupakela-Nelulu (2008) wrote after a study she conducted on the Learners’ Representative Council (LRC) of a school in Namibia. She refers to a time when “the involvement of students in school affairs was seen by the regime as a political act and attempts by student leaders to involve themselves in educational issues were often quashed” (ibid., p. i). This situation will be all too familiar to South African readers, where a public holiday, Youth Day, was declared to mark the apartheid regime’s brutal treatment of learner protestors on June 16, 1976. While Namibia has not experienced events of such magnitude, the notion of learner voice is equally problematic and worthy of investigation. The absence of leadership development opportunities for learners has led to this research study which seeks to answer the central research question: How can learner leadership be developed in a LRC? I used an interpretive paradigm, adopting a qualitative approach in the study. Concurrently, the study was framed and guided by the second generation of Cultural Historical Activity Theory (CHAT) as an analytical tool to achieve my research goal. The following questions guided the study in two phases. Phase one: What were the perceived causes for the nonsustainability of the learner leadership (LL) club at the school? Phase two: How is the notion of learner leadership understood in the school? How is leadership developed on the LRC? What enables and constrains leadership development of learners on the LRC? The research participants were thirty LRC members from grades 6 and 7 and15 teachers who teach the LRC members. The principal and three HOD’s were also research participants being part of the Senior Management team. One of the HOD’s also fulfils the role of the guardian teacher to the LRC. A school board chairperson also participated in the Change Laboratory Workshop. Data was generated through multiple data sources such as questionnaires, individual interviews, a focus group interview and observation. The findings from phase one of the study revealed that the learner leadership club’s intervention was a success during the 2014 academic year, but the absence of the learner leadership club as an extra-mural activity affected the sustainability of the club into the next academic year 2015. Findings from phase two revealed that leadership opportunities did exist at the school for learner leadership development. However, a few challenges emerged relating to traditional views of leadership and constraining factors that could affect learner leadership development at the school. Thus, Change Laboratory workshops were held to find solutions to the challenges, in order to promote and enhance learner leadership development, hopefully for the future of the Namibian child.
- Full Text:
- Date Issued: 2018
Annotated checklist of the epipelagic and shore fishes of the Maldive Islands
- Randall, John E, 1924-, Anderson, R Charles
- Authors: Randall, John E, 1924- , Anderson, R Charles
- Date: 1993
- Language: English
- Type: Text
- Identifier: vital:15035 , http://hdl.handle.net/10962/d1019913 , ISSN 0073-4381 , ISBN 0-86810-261-X , Ichthyological Bulletin of the J.L.B. Smith Insitute of Ichthyology; No. 59
- Description: A historical resume of fish collecting in the Maldive Islands is presented, beginning with the collection o f J. Stanley Gardiner in 1899-1900. Specimens of Maldives fishes have been examined at the Marine Research Section of the Ministry of Fisheries and Agriculture, Republic of Maldives and the five museums which house most of the fishes that have been collected in the islands: the Natural History Museum, London; Bernice P. Bishop Museum, Honolulu; California Academy of Sciences, San Francisco; Field Museum of Natural History, Chicago; and the Senckenberg Museum, Frankfurt. A total of 899 species of epipelagic and shore fishes are recorded from the Maldives; 201 of these are new records for the islands. Thirty-two of the 899 are recorded by generic name only. Some of these could not be identified to species due to poor condition or to their being juveniles, but most appear to be undescribed. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1993
- Authors: Randall, John E, 1924- , Anderson, R Charles
- Date: 1993
- Language: English
- Type: Text
- Identifier: vital:15035 , http://hdl.handle.net/10962/d1019913 , ISSN 0073-4381 , ISBN 0-86810-261-X , Ichthyological Bulletin of the J.L.B. Smith Insitute of Ichthyology; No. 59
- Description: A historical resume of fish collecting in the Maldive Islands is presented, beginning with the collection o f J. Stanley Gardiner in 1899-1900. Specimens of Maldives fishes have been examined at the Marine Research Section of the Ministry of Fisheries and Agriculture, Republic of Maldives and the five museums which house most of the fishes that have been collected in the islands: the Natural History Museum, London; Bernice P. Bishop Museum, Honolulu; California Academy of Sciences, San Francisco; Field Museum of Natural History, Chicago; and the Senckenberg Museum, Frankfurt. A total of 899 species of epipelagic and shore fishes are recorded from the Maldives; 201 of these are new records for the islands. Thirty-two of the 899 are recorded by generic name only. Some of these could not be identified to species due to poor condition or to their being juveniles, but most appear to be undescribed. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1993
The life and work of Benjamin Tyamzashe: a contemporary Xhosa composer
- Authors: Hansen, Deirdre Doris
- Date: 1968
- Subjects: Xhosa (African people) -- Music , Hymns, Xhosa , Tyamzashe, Benjamin John Peter (1890-1978) , Composers, Black -- South Africa
- Language: English , Xhosa
- Type: Book
- Identifier: vital:550 , http://hdl.handle.net/10962/d1020214
- Description: The present paper is a digest of the thesis submitted under the same title, by Miss Deirdre Hansen for the Degree of Master of Music of Rhodes University in 1968. This work includes a large number of musical illustrations, which illuminate in detail many aspects of the works of Benjamin Tyamzashe. The section containing these has been reduced to its essentials, but what is here given should enable the reader to understand the manner in which Tyamzashe's ability as a composer has developed, and to give him his rightful place among his contemporaries. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1968
- Authors: Hansen, Deirdre Doris
- Date: 1968
- Subjects: Xhosa (African people) -- Music , Hymns, Xhosa , Tyamzashe, Benjamin John Peter (1890-1978) , Composers, Black -- South Africa
- Language: English , Xhosa
- Type: Book
- Identifier: vital:550 , http://hdl.handle.net/10962/d1020214
- Description: The present paper is a digest of the thesis submitted under the same title, by Miss Deirdre Hansen for the Degree of Master of Music of Rhodes University in 1968. This work includes a large number of musical illustrations, which illuminate in detail many aspects of the works of Benjamin Tyamzashe. The section containing these has been reduced to its essentials, but what is here given should enable the reader to understand the manner in which Tyamzashe's ability as a composer has developed, and to give him his rightful place among his contemporaries. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1968
On high-altitude and high- latitude frost environments
- Authors: Hansen, Christel Dorothee
- Date: 2018
- Subjects: Frost -- Drakensberg Mountains , Frost -- Prince Edward Islands -- Marion Island , Frost -- Antarctica -- Queen Maud Land , Climatic geomorphology -- Southern Hemisphere , Permafrost -- Southern Hemisphere , Periglacial processes -- Southern Hemisphere , Frost environments -- Southern Hemisphere
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/62383 , vital:28169
- Description: Frost environments occur throughout the world, with associated processes occurring across climatic zones. Climatic geomorphology proposes that climatic zones, largely derived from annual average air temperature and precipitation values, have specific landforms and processes active within that zone. This study offers unique insights into the frost environments of three locations in the Southern Hemisphere, namely the Eastern Cape Drakensberg of South Africa, sub-Antarctic Marion Island, and Dronning Maud Land of Antarctica. The Drakensberg ranges from temperate to alpine, Marion Island is hyper-maritime, and Dronning Maud Land a polar desert. Drivers and forcings on the ground frost regime are identified, as are future climatic scenarios. Altitude and latitude were identified as the most important locational drivers, while air temperature showed highest correlation with freezing events. The initiation of a freeze event correlated strongly with maximum ground temperatures. Vegetation cover was found to ameliorate frost cycles, thereby increasing ground temperatures. Dronning Maud Land of Antarctica is characterised by annual frost (permafrost), with limited seasonal thaw in summer. Thawing cycles reflected the depth of the active layer, which ranged from just under 60 cm for Robertskollen (at lowest altitude) to less than 15 cm on Slettfjell (at greatest altitude). Marion Island had the most active frost environment, exhibiting both seasonal frost, and ubiquitous shallow diurnal frost cycles. The Drakensberg were largely frost-free, with limited seasonal frost and few diurnal freeze- thaw events. Diurnal frost processes were found to be azonal, and present at all three study locations. Evidence of landforms derived from diurnal frost processes were evident in each zone. Equifinality/convergence of form was present to a degree. The presence of patterned ground, which was not wholly derived from frost processes, suggests a measure of equifinality. Furthermore, openwork block deposits, of which not all are either blockstreams nor blockfields, are not necessarily the result of frost processes. The periglacial environment is poorly defined and methods to delineate this environment, as well as other climatic zones, should include additional parameters. Delineating zones on annual (and limited) monthly averages based on predominantly temperature, is not sufficient. While concepts of climatic geomorphology may be applied in a general sense, this framework is not suited to working at smaller scales. Specifically, periglacial environments should be delineated using ground moisture, as well as air temperature. Furthermore, vegetation and snow cover are important, as are soil textural properties.
- Full Text:
- Date Issued: 2018
- Authors: Hansen, Christel Dorothee
- Date: 2018
- Subjects: Frost -- Drakensberg Mountains , Frost -- Prince Edward Islands -- Marion Island , Frost -- Antarctica -- Queen Maud Land , Climatic geomorphology -- Southern Hemisphere , Permafrost -- Southern Hemisphere , Periglacial processes -- Southern Hemisphere , Frost environments -- Southern Hemisphere
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/62383 , vital:28169
- Description: Frost environments occur throughout the world, with associated processes occurring across climatic zones. Climatic geomorphology proposes that climatic zones, largely derived from annual average air temperature and precipitation values, have specific landforms and processes active within that zone. This study offers unique insights into the frost environments of three locations in the Southern Hemisphere, namely the Eastern Cape Drakensberg of South Africa, sub-Antarctic Marion Island, and Dronning Maud Land of Antarctica. The Drakensberg ranges from temperate to alpine, Marion Island is hyper-maritime, and Dronning Maud Land a polar desert. Drivers and forcings on the ground frost regime are identified, as are future climatic scenarios. Altitude and latitude were identified as the most important locational drivers, while air temperature showed highest correlation with freezing events. The initiation of a freeze event correlated strongly with maximum ground temperatures. Vegetation cover was found to ameliorate frost cycles, thereby increasing ground temperatures. Dronning Maud Land of Antarctica is characterised by annual frost (permafrost), with limited seasonal thaw in summer. Thawing cycles reflected the depth of the active layer, which ranged from just under 60 cm for Robertskollen (at lowest altitude) to less than 15 cm on Slettfjell (at greatest altitude). Marion Island had the most active frost environment, exhibiting both seasonal frost, and ubiquitous shallow diurnal frost cycles. The Drakensberg were largely frost-free, with limited seasonal frost and few diurnal freeze- thaw events. Diurnal frost processes were found to be azonal, and present at all three study locations. Evidence of landforms derived from diurnal frost processes were evident in each zone. Equifinality/convergence of form was present to a degree. The presence of patterned ground, which was not wholly derived from frost processes, suggests a measure of equifinality. Furthermore, openwork block deposits, of which not all are either blockstreams nor blockfields, are not necessarily the result of frost processes. The periglacial environment is poorly defined and methods to delineate this environment, as well as other climatic zones, should include additional parameters. Delineating zones on annual (and limited) monthly averages based on predominantly temperature, is not sufficient. While concepts of climatic geomorphology may be applied in a general sense, this framework is not suited to working at smaller scales. Specifically, periglacial environments should be delineated using ground moisture, as well as air temperature. Furthermore, vegetation and snow cover are important, as are soil textural properties.
- Full Text:
- Date Issued: 2018
An exploration of leadership development in a learner representative structure in a secondary school, Oshana Region, Namibia
- Kadhepa-Kandjengo, Selma Ndeyapo
- Authors: Kadhepa-Kandjengo, Selma Ndeyapo
- Date: 2018
- Subjects: School management and organization -- Namibia , Educational leadership -- Namibia , Education, Secondary -- Namibia , Student government -- Namibia , Student participation in administration -- Namibia , Cultural Historical Activity Theory
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/62450 , vital:28193
- Description: Before independence, Namibia inherited a system of Bantu education which was hierarchical, authoritarian and non-democratic. Upon independence, the educational sector went through numerous reforms which were meant to transform education and to make it more democratic, whereby all stakeholders can broadly participate. In spite of these reforms, leadership of schools has remained a hierarchical system, where a principal who, as an individual, runs the school without recognition of the potential leadership of others. Recent studies on leadership have called for shared leadership, whereby leadership is a practice, permeable to learner leaders and not associated with individuals. This research study aims to explore learner leadership development in the Learner Representative Council (LRC) structure at a secondary school in Namibia. The motivation of this research study was twofold - firstly, my personal interest in learner leadership was aroused by my teaching experience. The second reason was due to my realisation that the area was under-researched in Namibia, hence I wanted to fill the existing gap on learner leadership. The study critically engaged learners and teachers to help me get an understanding of learner leadership and the factors enabling learner leadership development. I also found that challenges which resulted in contradictions, hampered leadership development. The study took an interventionist approach and second generation Cultural Historical Activity Theory was used to surface tensions and contradictions affecting learner leadership development. Change Laboratory workshops enabled the expansive learning process with the 12 LRC members. Data was collected using semi-structured interviews, questionnaires, observation, document analysis and journaling. The study found that learner leadership was understood more in terms of traditional views of leadership, whereby a learner needed to possess certain qualities in order to lead. The findings further pointed out that the LRC members were mainly involved in managerial roles and not really leadership roles, as such, and they were not involved in decision-making at the school. Although provision for the LRC body is made in an Educational Act, historical and cultural forces account for teachers’ reluctance to support the LRC members, as well as for silence of learner voice. I hope that findings from this research study strengthen learner leadership structures in schools and contribute to the creation of knowledge on learner leadership in Namibia.
- Full Text:
- Date Issued: 2018
- Authors: Kadhepa-Kandjengo, Selma Ndeyapo
- Date: 2018
- Subjects: School management and organization -- Namibia , Educational leadership -- Namibia , Education, Secondary -- Namibia , Student government -- Namibia , Student participation in administration -- Namibia , Cultural Historical Activity Theory
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/62450 , vital:28193
- Description: Before independence, Namibia inherited a system of Bantu education which was hierarchical, authoritarian and non-democratic. Upon independence, the educational sector went through numerous reforms which were meant to transform education and to make it more democratic, whereby all stakeholders can broadly participate. In spite of these reforms, leadership of schools has remained a hierarchical system, where a principal who, as an individual, runs the school without recognition of the potential leadership of others. Recent studies on leadership have called for shared leadership, whereby leadership is a practice, permeable to learner leaders and not associated with individuals. This research study aims to explore learner leadership development in the Learner Representative Council (LRC) structure at a secondary school in Namibia. The motivation of this research study was twofold - firstly, my personal interest in learner leadership was aroused by my teaching experience. The second reason was due to my realisation that the area was under-researched in Namibia, hence I wanted to fill the existing gap on learner leadership. The study critically engaged learners and teachers to help me get an understanding of learner leadership and the factors enabling learner leadership development. I also found that challenges which resulted in contradictions, hampered leadership development. The study took an interventionist approach and second generation Cultural Historical Activity Theory was used to surface tensions and contradictions affecting learner leadership development. Change Laboratory workshops enabled the expansive learning process with the 12 LRC members. Data was collected using semi-structured interviews, questionnaires, observation, document analysis and journaling. The study found that learner leadership was understood more in terms of traditional views of leadership, whereby a learner needed to possess certain qualities in order to lead. The findings further pointed out that the LRC members were mainly involved in managerial roles and not really leadership roles, as such, and they were not involved in decision-making at the school. Although provision for the LRC body is made in an Educational Act, historical and cultural forces account for teachers’ reluctance to support the LRC members, as well as for silence of learner voice. I hope that findings from this research study strengthen learner leadership structures in schools and contribute to the creation of knowledge on learner leadership in Namibia.
- Full Text:
- Date Issued: 2018
Karyology of three evolutionarily hexaploid southern African species of yellowfish, Labeobarbus Rüppel, 1836 (Cyprinidae)
- Naran, D, Skelton, Paul H, Villet, Martin H
- Authors: Naran, D , Skelton, Paul H , Villet, Martin H
- Date: 2007
- Language: English
- Type: Article
- Identifier: vital:6855 , http://hdl.handle.net/10962/d1011138 , http://dx.doi.org/10.3377/1562-7020(2007)42[254:KOTEHS]2.0.CO;2
- Description: The karyotypes of three species of yellowfish, namely Labeobarbus marequensis (A. Smith, 1841), L. capensis (A. Smith, 1841) and L. polylepis (Boulenger, 1907), were examined by Giemsa staining using an approach improved for the description of high chromosome numbers. In each case, 2n = 150; no heteromorphic chromosomes were detected; chromosomes in all morphological categories ranged smoothly from large to small, with no distinctly large submetacentric pairs; and metacentric chromosomes showed little variation in size. Labeobarbus marequensis had 26 metacentric (m), 44 submetacentric (sm), 42 subtelocentric (st) and 38 acrocentric (a) chromosomes and a fundamental number (FN) of 262; L. capensis had 16 m, 58 sm, 42 st and 34 a chromosomes and FN = 266; and L. polylepis had 18 m, 60 sm, 42 st and 30 a chromosomes and FN = 270. These results, combined with published literature, imply that Labeobarbus Rüppel, 1836 is an evolutionarily hexaploid African lineage and support its removal from synonymy with the evolutionarily tetraploid Asian genus Tor Gray, 1834. A review of fundamental numbers for conspecific Labeobarbus species examined in different studies implicated karyological technique as a confounding factor in assessing details of karyotypes, leading to recommendations for future karyological studies of barbine fishes. Potential synapomorphies are pointed out in karyological characters of species within Labeobarbus.
- Full Text:
- Date Issued: 2007
- Authors: Naran, D , Skelton, Paul H , Villet, Martin H
- Date: 2007
- Language: English
- Type: Article
- Identifier: vital:6855 , http://hdl.handle.net/10962/d1011138 , http://dx.doi.org/10.3377/1562-7020(2007)42[254:KOTEHS]2.0.CO;2
- Description: The karyotypes of three species of yellowfish, namely Labeobarbus marequensis (A. Smith, 1841), L. capensis (A. Smith, 1841) and L. polylepis (Boulenger, 1907), were examined by Giemsa staining using an approach improved for the description of high chromosome numbers. In each case, 2n = 150; no heteromorphic chromosomes were detected; chromosomes in all morphological categories ranged smoothly from large to small, with no distinctly large submetacentric pairs; and metacentric chromosomes showed little variation in size. Labeobarbus marequensis had 26 metacentric (m), 44 submetacentric (sm), 42 subtelocentric (st) and 38 acrocentric (a) chromosomes and a fundamental number (FN) of 262; L. capensis had 16 m, 58 sm, 42 st and 34 a chromosomes and FN = 266; and L. polylepis had 18 m, 60 sm, 42 st and 30 a chromosomes and FN = 270. These results, combined with published literature, imply that Labeobarbus Rüppel, 1836 is an evolutionarily hexaploid African lineage and support its removal from synonymy with the evolutionarily tetraploid Asian genus Tor Gray, 1834. A review of fundamental numbers for conspecific Labeobarbus species examined in different studies implicated karyological technique as a confounding factor in assessing details of karyotypes, leading to recommendations for future karyological studies of barbine fishes. Potential synapomorphies are pointed out in karyological characters of species within Labeobarbus.
- Full Text:
- Date Issued: 2007
Pomacanthus Rhomboides (Gilchrist and Thompson), the valid name for the South African Angelfish previously known as Pomacanthus Striatus
- Randall, John E, 1924-, J.L.B. Smith Institute of Ichthyology
- Authors: Randall, John E, 1924- , J.L.B. Smith Institute of Ichthyology
- Date: 1988-12
- Subjects: Marine angelfishes -- South Africa -- Nomenclature
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70291 , vital:29642 , 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. 46 , The Indian Ocean angelfish from southern Africa heretofore identified as Pomacanthus striatus (Riippell, 1836) is Pomacanthus rhomboides (Gilchrist and Thompson, 1908). P. striatus is shown to be the young of P. maculosus (Forsskål, 1775) which is not known from South Africa; it occurs in the Red Sea, Persian Gulf, and along the East African coast to at least 13°S. Holacanthus coeruleus Cuvier, described from a juvenile specimen from the Red Sea, is a junior synonym of Pomacanthus asfur (Forsskål), not P. semicirculatus (Cuvier), thus casting doubt on the record of the letter from the Red Sea.
- Full Text:
- Date Issued: 1988-12
- Authors: Randall, John E, 1924- , J.L.B. Smith Institute of Ichthyology
- Date: 1988-12
- Subjects: Marine angelfishes -- South Africa -- Nomenclature
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70291 , vital:29642 , 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. 46 , The Indian Ocean angelfish from southern Africa heretofore identified as Pomacanthus striatus (Riippell, 1836) is Pomacanthus rhomboides (Gilchrist and Thompson, 1908). P. striatus is shown to be the young of P. maculosus (Forsskål, 1775) which is not known from South Africa; it occurs in the Red Sea, Persian Gulf, and along the East African coast to at least 13°S. Holacanthus coeruleus Cuvier, described from a juvenile specimen from the Red Sea, is a junior synonym of Pomacanthus asfur (Forsskål), not P. semicirculatus (Cuvier), thus casting doubt on the record of the letter from the Red Sea.
- Full Text:
- Date Issued: 1988-12