Creating a relationship: a discourse analysis focusing on the construction of identities and relationships in distance education materials for a teacher upgrade programme
- Authors: Van der Mescht, Caroline
- Date: 2005
- Subjects: Distance education -- South Africa Teachers -- Training of -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1467 , http://hdl.handle.net/10962/d1003348
- Description: Distance education, and therefore the writing of distance materials, is a growing field in South Africa. This makes it potentially a site of innovation and change as writers experiment with ways of creating effective teaching situations at long range. The Fort Hare Distance Education Project materials seem to be a response to both the increased need for teacher upgrade programmes and the need for innovation to tailor those programmes to the needs of local teachers in a changing society. This innovative attempt to communicate with tertiary distance students has unusual features which suggest that they are worth investigation. Using discourse analysis, including the work of Scollon and Scollon on politeness theory, and an analysis of visual elements using categories developed by Kress and van Leeuwen, this study focuses on 18 pages of a sample text, booklet 9, “A Whole Language Approach,” to investigate how the writer-reader relationship and the identity of the reader are constructed. The analysis reveals a complex, interlocking construction of identity and relationship, producing and resolving apparent contradictions as writers move from one position to another while they negotiate their ongoing and evolving relationship with the readers. Features of identity and relationship operating through the text include issues of authority, changing roles of teachers and learners, trust, what constitutes appropriate language and materials, acknowledging prior learning in under-qualified professionals, ownership of the text, hierarchy and egalitarianism, and stereotyping. The study suggests that the Fort Hare Distance Project materials offer an example of strategies suited to local students which should benefit those who design such courses. It further suggests that visual analysis together with discourse analysis provides insights which seem not to be accessible through a study of the verbal text, and that an analysis of visual elements may widen a researcher’s options. It reveals ways in which writers can negotiate conflicting positions and consciously or unconsciously attempt to resolve contradictions and ambivalence. It suggests issues which need to be negotiated in any text written in South Africa for a similar audience.
- Full Text:
- Date Issued: 2005
- Authors: Van der Mescht, Caroline
- Date: 2005
- Subjects: Distance education -- South Africa Teachers -- Training of -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1467 , http://hdl.handle.net/10962/d1003348
- Description: Distance education, and therefore the writing of distance materials, is a growing field in South Africa. This makes it potentially a site of innovation and change as writers experiment with ways of creating effective teaching situations at long range. The Fort Hare Distance Education Project materials seem to be a response to both the increased need for teacher upgrade programmes and the need for innovation to tailor those programmes to the needs of local teachers in a changing society. This innovative attempt to communicate with tertiary distance students has unusual features which suggest that they are worth investigation. Using discourse analysis, including the work of Scollon and Scollon on politeness theory, and an analysis of visual elements using categories developed by Kress and van Leeuwen, this study focuses on 18 pages of a sample text, booklet 9, “A Whole Language Approach,” to investigate how the writer-reader relationship and the identity of the reader are constructed. The analysis reveals a complex, interlocking construction of identity and relationship, producing and resolving apparent contradictions as writers move from one position to another while they negotiate their ongoing and evolving relationship with the readers. Features of identity and relationship operating through the text include issues of authority, changing roles of teachers and learners, trust, what constitutes appropriate language and materials, acknowledging prior learning in under-qualified professionals, ownership of the text, hierarchy and egalitarianism, and stereotyping. The study suggests that the Fort Hare Distance Project materials offer an example of strategies suited to local students which should benefit those who design such courses. It further suggests that visual analysis together with discourse analysis provides insights which seem not to be accessible through a study of the verbal text, and that an analysis of visual elements may widen a researcher’s options. It reveals ways in which writers can negotiate conflicting positions and consciously or unconsciously attempt to resolve contradictions and ambivalence. It suggests issues which need to be negotiated in any text written in South Africa for a similar audience.
- Full Text:
- Date Issued: 2005
Equity in the South African legal system a critical ethnography
- Authors: Leiper, Jonathan
- Date: 2004
- Subjects: Court interpreting and translating -- South Africa , Language and languages -- Law and legislation -- South Africa , Translators -- Training of -- South Africa , Translators -- Legal status, laws, etc. -- South Africa , Law -- Translating -- South Africa , Law -- South Africa -- Language
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2355 , http://hdl.handle.net/10962/d1002637 , Court interpreting and translating -- South Africa , Language and languages -- Law and legislation -- South Africa , Translators -- Training of -- South Africa , Translators -- Legal status, laws, etc. -- South Africa , Law -- Translating -- South Africa , Law -- South Africa -- Language
- Description: This thesis focuses on the process of interpreting and the difficulties faced by interpreters in the Magistrates' Court in Grahamstown, South Africa. More particularly, the thesis seeks to establish whether the constitutional guarantee of language equity can be applied to the courts - given the numerous problems with interpreting. Respondents from different spheres of the legal profession were interviewed in order to ascertain their perspectives on the state of interpreting, problems that are encountered by interpreters and attitudes displayed by other members of the legal profession towards interpreters. The methodology used in the thesis is that of a critical ethnography. As such, the research also has a critical focus, seeking to determine the ideologies and interests of different ):articipants in the legal process. On the basis of the data collected, a number of conclusions are drawn. The first is that interpreting in South Africa is in trouble. The system of interpreting is beset by a number of different problems. This study describes four different types of problems that are faced by interpreters: linguistic problems, environmental problems, training and administrative issues, and poor status in the eyes of the other participants in the legal process. Together the cumulative effect of these problems is the undermining of the principle of equity in the justice system. Finally, the thesis provides various practical and achievable solutions to the problems outlined above, specifically those faced by interpreters. The researcher also critically evaluates the efforts and motives of the Department of Justice and Constitutional Development.
- Full Text:
- Date Issued: 2004
- Authors: Leiper, Jonathan
- Date: 2004
- Subjects: Court interpreting and translating -- South Africa , Language and languages -- Law and legislation -- South Africa , Translators -- Training of -- South Africa , Translators -- Legal status, laws, etc. -- South Africa , Law -- Translating -- South Africa , Law -- South Africa -- Language
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2355 , http://hdl.handle.net/10962/d1002637 , Court interpreting and translating -- South Africa , Language and languages -- Law and legislation -- South Africa , Translators -- Training of -- South Africa , Translators -- Legal status, laws, etc. -- South Africa , Law -- Translating -- South Africa , Law -- South Africa -- Language
- Description: This thesis focuses on the process of interpreting and the difficulties faced by interpreters in the Magistrates' Court in Grahamstown, South Africa. More particularly, the thesis seeks to establish whether the constitutional guarantee of language equity can be applied to the courts - given the numerous problems with interpreting. Respondents from different spheres of the legal profession were interviewed in order to ascertain their perspectives on the state of interpreting, problems that are encountered by interpreters and attitudes displayed by other members of the legal profession towards interpreters. The methodology used in the thesis is that of a critical ethnography. As such, the research also has a critical focus, seeking to determine the ideologies and interests of different ):articipants in the legal process. On the basis of the data collected, a number of conclusions are drawn. The first is that interpreting in South Africa is in trouble. The system of interpreting is beset by a number of different problems. This study describes four different types of problems that are faced by interpreters: linguistic problems, environmental problems, training and administrative issues, and poor status in the eyes of the other participants in the legal process. Together the cumulative effect of these problems is the undermining of the principle of equity in the justice system. Finally, the thesis provides various practical and achievable solutions to the problems outlined above, specifically those faced by interpreters. The researcher also critically evaluates the efforts and motives of the Department of Justice and Constitutional Development.
- Full Text:
- Date Issued: 2004
Law and culture in the new constitutional dispensation with specific reference to the custom of circumcision as practiced in the Eastern Cape
- Authors: Momoti, Ndyebo Kingsworth
- Date: 2004
- Subjects: Xhosa (African people) -- Social life and customs Xhosa (African people) -- Rites and ceremonies Circumcision -- Law and legislation -- South Africa -- Eastern Cape Initiation rites -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:3685 , http://hdl.handle.net/10962/d1003200
- Description: This study examines the custom of circumcision in the context of culture, law and the Constitution. In Chapter 1 the writer considers the pervasive role of culture in the context of the current debate in relation to equality versus culture. In Chapter 2 the writer considers the origin, development and the legal significance of the custom of circumcision in the Eastern Cape. In Chapter 3 the writer traces the circumstances leading to the enactment of the Provincial statute governing circumcision of children. In this chapter the writer also poses the question whether an aspect of morality can effectively be regulated by law. Chapter 4 looks at the question of cultural rights in terms of the Constitution and the possible effect of the promulgation of the Commission for the Promotion and Protection of the Rights of Cultural, Religious and Linguistic Communities Act 19 of 2000 on the approach of the courts in respect of constitutional challenges directed at some aspects of customary law. Chapter 5 looks at the custom of circumcision and the need for the protection of children. The writer raises the issue of the role of traditional leaders in the eradication of abuses associated with circumcision. The last Chapter comments on the reasons for the failure of the new Act governing circumcision in the Province.
- Full Text:
- Date Issued: 2004
- Authors: Momoti, Ndyebo Kingsworth
- Date: 2004
- Subjects: Xhosa (African people) -- Social life and customs Xhosa (African people) -- Rites and ceremonies Circumcision -- Law and legislation -- South Africa -- Eastern Cape Initiation rites -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:3685 , http://hdl.handle.net/10962/d1003200
- Description: This study examines the custom of circumcision in the context of culture, law and the Constitution. In Chapter 1 the writer considers the pervasive role of culture in the context of the current debate in relation to equality versus culture. In Chapter 2 the writer considers the origin, development and the legal significance of the custom of circumcision in the Eastern Cape. In Chapter 3 the writer traces the circumstances leading to the enactment of the Provincial statute governing circumcision of children. In this chapter the writer also poses the question whether an aspect of morality can effectively be regulated by law. Chapter 4 looks at the question of cultural rights in terms of the Constitution and the possible effect of the promulgation of the Commission for the Promotion and Protection of the Rights of Cultural, Religious and Linguistic Communities Act 19 of 2000 on the approach of the courts in respect of constitutional challenges directed at some aspects of customary law. Chapter 5 looks at the custom of circumcision and the need for the protection of children. The writer raises the issue of the role of traditional leaders in the eradication of abuses associated with circumcision. The last Chapter comments on the reasons for the failure of the new Act governing circumcision in the Province.
- Full Text:
- Date Issued: 2004
An economic analysis of eradicating alien vegetation as an alternative to conventional water supply schemes: a case study of the Krom and Kouga
- Authors: Carpenter, Robert Charles
- Date: 1999
- Subjects: Alien plants -- South Africa , Water-supply -- South Africa , Kouga River (South Africa)
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1000 , http://hdl.handle.net/10962/d1002735 , Alien plants -- South Africa , Water-supply -- South Africa , Kouga River (South Africa)
- Description: South Africa is classified as an arid to semi-arid region and water scarcity in South Africa has been identified as a key factor limiting socioeconomic development in the next century. In the Algoa region, the total urban plus agricultural water demand is expected to exceed the supply by the year 2005. The Kouga Working for Water Project aims to increase the base flow to the existing dams which supply the Port Elizabeth metropolitan area through the eradication of invasive alien trees in the riparian areas of the Krom and Kouga catchments. This thesis analyses the economic efficiency of optimal catchment management as a water supply scheme. A cost-benefit analysis is conducted for the Kouga eradication programme, and its desirability is evaluated in terms of the net present value (NPV) and the internal rate of return (IRR) criteria. In order to compare the cost-e~i.ciency of the eradication programme to alternative water supply augmentation schemes the Unit Reference Value (URV) is calculated for the project. The NPV for the project is calculated using a discount rate of 7% and amounts to nearly R24 million. This positive NPV indicates that the project is economically desirable in that it results in the improvement of human welfare. The IRR decision rule supports this finding. The URV of the eradication scheme is found to be competitive to that generated by more conventional schemes. Considered in the evaluation of the project are a host of environmental benefits that accompany the eradication of alien vegetation. This is in contrast to alternative schemes which result in several detrimental impacts to the environment. The economic analysis concludes that the eradication of alien vegetation is an efficient and desirable alternative water supply augmentation scheme. The conclusions drawn from the analysis of the eradication programme in this catchment area can be extended to other catchment areas, with the aim of promoting the most efficient supply of water.
- Full Text:
- Date Issued: 1999
- Authors: Carpenter, Robert Charles
- Date: 1999
- Subjects: Alien plants -- South Africa , Water-supply -- South Africa , Kouga River (South Africa)
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1000 , http://hdl.handle.net/10962/d1002735 , Alien plants -- South Africa , Water-supply -- South Africa , Kouga River (South Africa)
- Description: South Africa is classified as an arid to semi-arid region and water scarcity in South Africa has been identified as a key factor limiting socioeconomic development in the next century. In the Algoa region, the total urban plus agricultural water demand is expected to exceed the supply by the year 2005. The Kouga Working for Water Project aims to increase the base flow to the existing dams which supply the Port Elizabeth metropolitan area through the eradication of invasive alien trees in the riparian areas of the Krom and Kouga catchments. This thesis analyses the economic efficiency of optimal catchment management as a water supply scheme. A cost-benefit analysis is conducted for the Kouga eradication programme, and its desirability is evaluated in terms of the net present value (NPV) and the internal rate of return (IRR) criteria. In order to compare the cost-e~i.ciency of the eradication programme to alternative water supply augmentation schemes the Unit Reference Value (URV) is calculated for the project. The NPV for the project is calculated using a discount rate of 7% and amounts to nearly R24 million. This positive NPV indicates that the project is economically desirable in that it results in the improvement of human welfare. The IRR decision rule supports this finding. The URV of the eradication scheme is found to be competitive to that generated by more conventional schemes. Considered in the evaluation of the project are a host of environmental benefits that accompany the eradication of alien vegetation. This is in contrast to alternative schemes which result in several detrimental impacts to the environment. The economic analysis concludes that the eradication of alien vegetation is an efficient and desirable alternative water supply augmentation scheme. The conclusions drawn from the analysis of the eradication programme in this catchment area can be extended to other catchment areas, with the aim of promoting the most efficient supply of water.
- Full Text:
- Date Issued: 1999
Isolation and identification of Beta-Lactam Producing Microorganisms using PCR based methodologies
- Authors: Krallis, Myrsini
- Date: 1997
- Subjects: Polymerase chain reaction , Bacterial genetics , Fungi -- Genetics , Beta lactam antibiotics , Microbial enzymes
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4155 , http://hdl.handle.net/10962/d1018237
- Description: The polymerase chain reaction (PCR) was investigated as a potential tool in microbial screening for 13-lactam. producing organisms. Optimization of PCR conditions and the addition of acetamide to the PCR reaction allowed for the successful amplification of the isopenicillin N synthetase (lPNS) gene in S. clavuligerus, S. tanashiensis, S. griseus, S. olivaceus, S. lipmanii, and S. chartreusis. PCR was used to produce a radiolabelled probe from S. clavuligerus that was used to detect analogous genes in bacteria and fungi. Southern blot and dot blot analysis using the lPNS probe revealed the presence of IPNS-like sequences in seventeen organisms. Fourteen of these sequences belonged to known 13-lactam. producing organisms; one unidentified soil isolate; and two non-/3-lactam. producing organisms viz. S. venezuelae ATCC 10712 and S. hygroscopicus ATCC 21703. The lPNS gene was also detected in a 13-lactam producer (S. chartreusis) that had lost its ability to produce antibiotic. It would therefore have been overlooked in a conventional antibiotic screening program. The use of PCR, coupled with Southern hybridization and dot blot analysis, increased the sensitivity and specificity of the antibiotic screening procedures and allowed for the investigation of evolutionary relationships between the eukaryotes and the prokaryotes. A preliminary investigation into the potential use of RAPD PCR and protein fmgerprinting as tools for solving discrepancies in streptomycete identification was conducted. A variety of streptomycete species that were chosen as being representative of a number of numerical taxonomic classes were amplified using various RAPD primers. Streptomycetes appear to be genetically diverse organisms as was reflected by their RAPD and protein profiles. The application of PCR in an antibiotic screening program showed great potential as a specific and sensitive tool in the detection of /3-lactam producers and in the elimination of duplicate strains.
- Full Text:
- Date Issued: 1997
- Authors: Krallis, Myrsini
- Date: 1997
- Subjects: Polymerase chain reaction , Bacterial genetics , Fungi -- Genetics , Beta lactam antibiotics , Microbial enzymes
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4155 , http://hdl.handle.net/10962/d1018237
- Description: The polymerase chain reaction (PCR) was investigated as a potential tool in microbial screening for 13-lactam. producing organisms. Optimization of PCR conditions and the addition of acetamide to the PCR reaction allowed for the successful amplification of the isopenicillin N synthetase (lPNS) gene in S. clavuligerus, S. tanashiensis, S. griseus, S. olivaceus, S. lipmanii, and S. chartreusis. PCR was used to produce a radiolabelled probe from S. clavuligerus that was used to detect analogous genes in bacteria and fungi. Southern blot and dot blot analysis using the lPNS probe revealed the presence of IPNS-like sequences in seventeen organisms. Fourteen of these sequences belonged to known 13-lactam. producing organisms; one unidentified soil isolate; and two non-/3-lactam. producing organisms viz. S. venezuelae ATCC 10712 and S. hygroscopicus ATCC 21703. The lPNS gene was also detected in a 13-lactam producer (S. chartreusis) that had lost its ability to produce antibiotic. It would therefore have been overlooked in a conventional antibiotic screening program. The use of PCR, coupled with Southern hybridization and dot blot analysis, increased the sensitivity and specificity of the antibiotic screening procedures and allowed for the investigation of evolutionary relationships between the eukaryotes and the prokaryotes. A preliminary investigation into the potential use of RAPD PCR and protein fmgerprinting as tools for solving discrepancies in streptomycete identification was conducted. A variety of streptomycete species that were chosen as being representative of a number of numerical taxonomic classes were amplified using various RAPD primers. Streptomycetes appear to be genetically diverse organisms as was reflected by their RAPD and protein profiles. The application of PCR in an antibiotic screening program showed great potential as a specific and sensitive tool in the detection of /3-lactam producers and in the elimination of duplicate strains.
- Full Text:
- Date Issued: 1997
An examination of the suitability of some contemporary South African fiction for readers in the post-developmental reading stage
- Authors: Cole, Lorna
- Date: 1992
- Subjects: Children's literature, South African -- History and criticism Children -- Books and reading -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1530 , http://hdl.handle.net/10962/d1003412
- Description: Adverse criticism regarding the quantity and quality of children's books in South Africa appear in such respected sources as The Oxford Companion to Children's Literature and The Companion to South African English Literature, the authors of which are of the opinion that South African children are dependent solely upon Eurocentric literature for their reading material. In recent years however, local publishers have attempted to redress this imbalance by offering prizes for unpublished works. These prizes have acted as incentives for aspiring writers, many of whom have had novels published specifically for children in the post-developmental reading stage. This study critically examines some of these prizewinning works of fantasy and contemporary realism, in an effort to gauge their literary worth within the context of accepted criteria for judging children's literature. Accolades from adults are not however a guarantee that the prizewinning books will be received with equal acclaim by the children for whom they are written. For this reason, five children in the post-developmental reading stage were asked to pass their opinions and non-literary judgments on the books. Although the critical evaluation of the indigenous works proves them to be eminently worthy of the prizes which they received on publication, the children did not rate them as highly as certain imported works. The works of fantasy by Marguerite Poland rated poorly in terms of their popularity despite the fact that the children said that in a non-circumscribed context, they choose fantasy in preference to contemporary realism. Within the context of the indigenous literature which they read for this study though, they preferred the works of contemporary realism as they were able to identify with particular aspects of the novels. Indigenous literature for children in the post-developmental reading stage is a comparatively new phenomenon which needs to be nurtured if it is to attain any lasting status. The onus rests upon the teachers of literature and librarians to introduce the literature and make the books more accessible to young readers. Publishers need perhaps to engage the views and opinions of the audience for whom the books are written in an effort to publish books which, without in any way detracting from their literary worth, will deal with subjects favoured by young readers.
- Full Text:
- Date Issued: 1992
- Authors: Cole, Lorna
- Date: 1992
- Subjects: Children's literature, South African -- History and criticism Children -- Books and reading -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1530 , http://hdl.handle.net/10962/d1003412
- Description: Adverse criticism regarding the quantity and quality of children's books in South Africa appear in such respected sources as The Oxford Companion to Children's Literature and The Companion to South African English Literature, the authors of which are of the opinion that South African children are dependent solely upon Eurocentric literature for their reading material. In recent years however, local publishers have attempted to redress this imbalance by offering prizes for unpublished works. These prizes have acted as incentives for aspiring writers, many of whom have had novels published specifically for children in the post-developmental reading stage. This study critically examines some of these prizewinning works of fantasy and contemporary realism, in an effort to gauge their literary worth within the context of accepted criteria for judging children's literature. Accolades from adults are not however a guarantee that the prizewinning books will be received with equal acclaim by the children for whom they are written. For this reason, five children in the post-developmental reading stage were asked to pass their opinions and non-literary judgments on the books. Although the critical evaluation of the indigenous works proves them to be eminently worthy of the prizes which they received on publication, the children did not rate them as highly as certain imported works. The works of fantasy by Marguerite Poland rated poorly in terms of their popularity despite the fact that the children said that in a non-circumscribed context, they choose fantasy in preference to contemporary realism. Within the context of the indigenous literature which they read for this study though, they preferred the works of contemporary realism as they were able to identify with particular aspects of the novels. Indigenous literature for children in the post-developmental reading stage is a comparatively new phenomenon which needs to be nurtured if it is to attain any lasting status. The onus rests upon the teachers of literature and librarians to introduce the literature and make the books more accessible to young readers. Publishers need perhaps to engage the views and opinions of the audience for whom the books are written in an effort to publish books which, without in any way detracting from their literary worth, will deal with subjects favoured by young readers.
- Full Text:
- Date Issued: 1992
The taxonomy and life history of the blue stingray, Dasyatis marmorata capensis (Batoidea : Dasyatidae) from Southern Africa
- Cowley, Paul D (Paul Denfer), 1964-
- Authors: Cowley, Paul D (Paul Denfer), 1964-
- Date: 1990
- Subjects: Stingrays -- Africa, Southern Dasyatidae
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5183 , http://hdl.handle.net/10962/d1001959
- Description: The blue stingray, Dasyatis marmorata capensis is an important recreational shore angling species, especially amongst tournament anglers, in South Africa. The taxonomy and aspects of the biology of this species were investigated from specimens collected between March 1987 and May 1989, from various localities along the southern African coastline. Morphological comparisons were made between Dasyatis pastinaca, Dasyatis marmorata and the local variety. The results indicated that the local variety is different to D. pastinaca in colouration, disc length size, and vertebral and radial counts. The proposed new sub-species Dasyatis marmorata capensis is closest to Dasyatis marmorata of the north-eastern Atlantic coast, but differs in snout angle, disc length and snout to vent length. Analysis of catch per unit of effort data revealed that the blue stingray exhibits distinct seasonality. Adult and sub-adult fish undertake an annual onshore/offshore migration and invade the inshore region between spring and summer, while juveniles remain offshore and utilize this zone as a nursery area. Length-at-age and growth rates for both sexes were estimated from bands formed seasonally in the vertebral centra. The derived von Bertalanffy growth parameters indicated that females reach a greater asymptotic size (913.8 mm DW) and have a slower growth rate (K = -0.07) than males (531.8 mm DW, K = -0.17). Growth rates of juvenile captive specimens compared favourably with back calculated values, at approximately 65 mm/year, for the first year of growth. Dasyatis marmorata capensis is an aplacental viviparous elasmobranch with a well defined annual breeding cycle. Young are released , at a size of 170-200 mm DW, from October to December after a gestation period of approximately nine months. An average fecundity of 3.07 was calculated . Examination of gonadal development indicated that sexual maturity is first attained at a size of 408 and 500 mm DW in males and females, respectively, corresponding to ages 4.5 and 7 years. Size-related food habits were determined independently from three depth zones. The major prey items for each size class were directly related to the abundance of the infauna of the different depth zones. Polychaeta, amphipoda and stomatopoda were the major prey items in the offshore zone. In the nearshore zone, the dominant prey species were Balanoglossus capensis and Callianassa spp .. The high incidence of empty stomachs and the presence of prey items which occur in greatest abundance beyond the surf zone indicated that this zone is not utilized for the purposes of feeding.
- Full Text:
- Date Issued: 1990
- Authors: Cowley, Paul D (Paul Denfer), 1964-
- Date: 1990
- Subjects: Stingrays -- Africa, Southern Dasyatidae
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5183 , http://hdl.handle.net/10962/d1001959
- Description: The blue stingray, Dasyatis marmorata capensis is an important recreational shore angling species, especially amongst tournament anglers, in South Africa. The taxonomy and aspects of the biology of this species were investigated from specimens collected between March 1987 and May 1989, from various localities along the southern African coastline. Morphological comparisons were made between Dasyatis pastinaca, Dasyatis marmorata and the local variety. The results indicated that the local variety is different to D. pastinaca in colouration, disc length size, and vertebral and radial counts. The proposed new sub-species Dasyatis marmorata capensis is closest to Dasyatis marmorata of the north-eastern Atlantic coast, but differs in snout angle, disc length and snout to vent length. Analysis of catch per unit of effort data revealed that the blue stingray exhibits distinct seasonality. Adult and sub-adult fish undertake an annual onshore/offshore migration and invade the inshore region between spring and summer, while juveniles remain offshore and utilize this zone as a nursery area. Length-at-age and growth rates for both sexes were estimated from bands formed seasonally in the vertebral centra. The derived von Bertalanffy growth parameters indicated that females reach a greater asymptotic size (913.8 mm DW) and have a slower growth rate (K = -0.07) than males (531.8 mm DW, K = -0.17). Growth rates of juvenile captive specimens compared favourably with back calculated values, at approximately 65 mm/year, for the first year of growth. Dasyatis marmorata capensis is an aplacental viviparous elasmobranch with a well defined annual breeding cycle. Young are released , at a size of 170-200 mm DW, from October to December after a gestation period of approximately nine months. An average fecundity of 3.07 was calculated . Examination of gonadal development indicated that sexual maturity is first attained at a size of 408 and 500 mm DW in males and females, respectively, corresponding to ages 4.5 and 7 years. Size-related food habits were determined independently from three depth zones. The major prey items for each size class were directly related to the abundance of the infauna of the different depth zones. Polychaeta, amphipoda and stomatopoda were the major prey items in the offshore zone. In the nearshore zone, the dominant prey species were Balanoglossus capensis and Callianassa spp .. The high incidence of empty stomachs and the presence of prey items which occur in greatest abundance beyond the surf zone indicated that this zone is not utilized for the purposes of feeding.
- Full Text:
- Date Issued: 1990
Some aspects of the reproductive endocrinology of the catfish, Clarias Gariepinus (Burchell, 1822)
- Authors: Rennie, Susan Elizabeth
- Date: 1981
- Subjects: Catfishes Clarias gariepinus
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5339 , http://hdl.handle.net/10962/d1005924
- Description: A description is given of the location, anatomy and morphology of the endocrine glands likely to be involved in controlling the reproductive cycle of C. gariepinus. Methods of identifying the secretory tissues in the light and electron microscopes are outlined. A review of the published results on homologous tissues from other teleosts is included and directions for further research on the endocrinology of C. gariepinus are discussed.
- Full Text:
- Date Issued: 1981
- Authors: Rennie, Susan Elizabeth
- Date: 1981
- Subjects: Catfishes Clarias gariepinus
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5339 , http://hdl.handle.net/10962/d1005924
- Description: A description is given of the location, anatomy and morphology of the endocrine glands likely to be involved in controlling the reproductive cycle of C. gariepinus. Methods of identifying the secretory tissues in the light and electron microscopes are outlined. A review of the published results on homologous tissues from other teleosts is included and directions for further research on the endocrinology of C. gariepinus are discussed.
- Full Text:
- Date Issued: 1981
Some properties of magnetospheric electrons observed west of Sanae
- Authors: Greener, James G
- Date: 1973
- Subjects: Magnetosphere
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5523 , http://hdl.handle.net/10962/d1012091 , Magnetosphere
- Description: The southern hemisphere has always been the neglected twin in the field ot geophysical research. The reasons for this are certainly not in the realm of science but in the history of man and his development in the northern half of the globe. Geophysically, however, our southern half provides a wealth of interesting problems and anomalies. Roederer (1966) explains the use of this word 'anomaly' by showing what some of the oddities of the southern hemisphere are, and by contrasting them with the corresponding regions of the earth across the equator. The principal feature is of course the geomagnetic surface field strength minimum at a point in the South Atlantic ocean very near the coast of Brazil. Intro., p. 1.
- Full Text:
- Date Issued: 1973
- Authors: Greener, James G
- Date: 1973
- Subjects: Magnetosphere
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5523 , http://hdl.handle.net/10962/d1012091 , Magnetosphere
- Description: The southern hemisphere has always been the neglected twin in the field ot geophysical research. The reasons for this are certainly not in the realm of science but in the history of man and his development in the northern half of the globe. Geophysically, however, our southern half provides a wealth of interesting problems and anomalies. Roederer (1966) explains the use of this word 'anomaly' by showing what some of the oddities of the southern hemisphere are, and by contrasting them with the corresponding regions of the earth across the equator. The principal feature is of course the geomagnetic surface field strength minimum at a point in the South Atlantic ocean very near the coast of Brazil. Intro., p. 1.
- Full Text:
- Date Issued: 1973
A comparison of attitudes toward intensive competition among high school pupils
- Authors: Potgieter, Justus R
- Date: 1971
- Subjects: Competition (Psychology) in adolescence Competition (Psychology) Interpersonal relations Motivation (Psychology)
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1930 , http://hdl.handle.net/10962/d1007604
- Description: From Preface: As a teacher with experience in competitive sport, the author became interested in the topic of athletic competition when joining the staff of an all-boys' school. The competitive aspect of sport at such a school can make quite an impression on an inexperienced teacher. The question then arose; Is this competitive atmosphere universal? Is this type of competition acceptable and desirable in our schools? Being a teacher of Physical Education as well as other subjects and also being actively involved in the coaching of senior sports teams the author regarded himself suitably qualified to investigate the matter of athletic competition in our schools.
- Full Text:
- Date Issued: 1971
- Authors: Potgieter, Justus R
- Date: 1971
- Subjects: Competition (Psychology) in adolescence Competition (Psychology) Interpersonal relations Motivation (Psychology)
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1930 , http://hdl.handle.net/10962/d1007604
- Description: From Preface: As a teacher with experience in competitive sport, the author became interested in the topic of athletic competition when joining the staff of an all-boys' school. The competitive aspect of sport at such a school can make quite an impression on an inexperienced teacher. The question then arose; Is this competitive atmosphere universal? Is this type of competition acceptable and desirable in our schools? Being a teacher of Physical Education as well as other subjects and also being actively involved in the coaching of senior sports teams the author regarded himself suitably qualified to investigate the matter of athletic competition in our schools.
- Full Text:
- Date Issued: 1971
The anatomy of human misery and its therapy : a study of miracles and healing in the life of our Lord and in the early church, until the Council of Nicaea
- Authors: Hawkridge, John Bernard
- Date: 1959
- Subjects: Jesus Christ -- Miracles , Spiritual healing -- Psychological aspects , Healing in the Bible , Church history
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1257 , http://hdl.handle.net/10962/d1012229 , Jesus Christ -- Miracles , Spiritual healing -- Psychological aspects , Healing in the Bible , Church history
- Description: This thesis seeks to show that miracles and healing are inseparable from the Messianic task of Jesus Christ; and that in so far as He commissioned His Church to continue that Messianic task, it is reasonable to expect that miracles and healing would continue. The early history of the Church is examined for evidence confirming this expectation, and a question is asked of the contemporary Church.
- Full Text:
- Date Issued: 1959
- Authors: Hawkridge, John Bernard
- Date: 1959
- Subjects: Jesus Christ -- Miracles , Spiritual healing -- Psychological aspects , Healing in the Bible , Church history
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1257 , http://hdl.handle.net/10962/d1012229 , Jesus Christ -- Miracles , Spiritual healing -- Psychological aspects , Healing in the Bible , Church history
- Description: This thesis seeks to show that miracles and healing are inseparable from the Messianic task of Jesus Christ; and that in so far as He commissioned His Church to continue that Messianic task, it is reasonable to expect that miracles and healing would continue. The early history of the Church is examined for evidence confirming this expectation, and a question is asked of the contemporary Church.
- Full Text:
- Date Issued: 1959
The atonement : a brief discussion
- Authors: Hay, Thomas Alexander
- Date: 1958
- Subjects: Atonement , Satisfaction for sin
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1258 , http://hdl.handle.net/10962/d1012233 , Atonement , Satisfaction for sin
- Description: This first section endeavours briefly to set out the problem, seeing it ln its proper context against the need it fulfils and its historical setting. It attempts to show something of the nature of sin and the need which sin creates; and asks the question Why Atonement? This question can only be answered by an appreciation of the meaning and power of sinfulness. Atonement is necessarily from God's side, and it is costly to God. An important factor in this section is the attempt to see the wholeness of Christ's work; to set the atonement in its true context within the life of Christ. An attempt is made to relate the atonement to the incarnation, The Word made flesh and dwelling among us; to the resurrection, which is not to be misunderstood as a mere evidential appendage to the cross, but to be seen as an essential factor in the salvation of men; and also to the ascension, to the problem of time and eternity, in that while Christ's work was once-for-all, it is nevertheless continued - it was in history, but is not bound within history. When this conception of the unity of Christ's work is grasped then we can turn to a consideration of the cross, always regarded by Faith as the very centre of the atonement. A brief survey is made of the Biblical teaching concerning salvation and the cross; and the centrality of the cross is interpreted sacrificially. Summary, p. x-xi.
- Full Text:
- Date Issued: 1958
- Authors: Hay, Thomas Alexander
- Date: 1958
- Subjects: Atonement , Satisfaction for sin
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1258 , http://hdl.handle.net/10962/d1012233 , Atonement , Satisfaction for sin
- Description: This first section endeavours briefly to set out the problem, seeing it ln its proper context against the need it fulfils and its historical setting. It attempts to show something of the nature of sin and the need which sin creates; and asks the question Why Atonement? This question can only be answered by an appreciation of the meaning and power of sinfulness. Atonement is necessarily from God's side, and it is costly to God. An important factor in this section is the attempt to see the wholeness of Christ's work; to set the atonement in its true context within the life of Christ. An attempt is made to relate the atonement to the incarnation, The Word made flesh and dwelling among us; to the resurrection, which is not to be misunderstood as a mere evidential appendage to the cross, but to be seen as an essential factor in the salvation of men; and also to the ascension, to the problem of time and eternity, in that while Christ's work was once-for-all, it is nevertheless continued - it was in history, but is not bound within history. When this conception of the unity of Christ's work is grasped then we can turn to a consideration of the cross, always regarded by Faith as the very centre of the atonement. A brief survey is made of the Biblical teaching concerning salvation and the cross; and the centrality of the cross is interpreted sacrificially. Summary, p. x-xi.
- Full Text:
- Date Issued: 1958