List of Titles

Influence of cyclodextrins on the fluorescence, photostability and singlet oxygen quantum yields of zinc phthalocyanine and naphthalocyanine complexes

- Tau, Prudence, Ogunsipe, Abimbola O, Maree, Suzanne, Maree, M David, Nyokong, Tebello

Authors: Tau, Prudence , Ogunsipe, Abimbola O , Maree, Suzanne , Maree, M David , Nyokong, Tebello
Date: 2003
Subjects: To be catalogued
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/304775 , vital:58488 , xlink:href="https://doi.org/10.1142/S1088424603000562"
Description: The effects of formation of cyclodextrin inclusion complexes on the photochemical and photophysical properties of zinc phthalocyanine (ZnPc) and various peripherally substituted zinc phthalocyanines as well as zinc naphthalocyanine (ZnNPc) are investigated. The cyclodextrins employed were the hydroxypropyl-γ-cyclodextrin and unsubstituted β-cyclodextrin. Job's plots were employed to confirm the stoichiometry of the inclusion complexes and showed 2:1 and 4:1 (cyclodextrin:phthalocyanine) inclusion behavior. The phthalocyanine inclusion complexes showed larger singlet oxygen quantum yield (ϕΔ) values when compared to the free phthalocyanines before inclusion, for complexes 1 (zinc naphthalocyanine), 2 (zinc tetranitrophthalocyanine) and 4 (zinc tetra-tert-butylphenoxyphthalocyanine). The fluorescence quantum yields generally remained unchanged following inclusion.
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Insect Pest Management and Ecological Research, G.H. Walter: book review

- Villet, Martin H

Authors: Villet, Martin H
Date: 2003
Subjects: To be catalogued
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/451735 , vital:75073 , https://hdl.handle.net/10520/EJC32546
Description: This book is a 275-page argument for the place of theoretical biology in pest management research. Its general message is that contemporary pest management research emphasizes application of technology or strategic research at the expense of application of knowledge or tactical research, and that even the application of knowledge should actually be subservient to the development and extension of knowledge, theoretical research. Whenever we study a pest, we are presented with an opportunity to enhance, rather than merely apply, knowledge. It is argued that pest management research is currently failing itself because it is not doing this, and several areas of theoretical biology are identified as offering ways out of this situation.
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Insect Pest Management and Ecological Research, GH Walter book review

- Villet, Martin H

Authors: Villet, Martin H
Date: 2003
Subjects: To be catalogued
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/442060 , vital:73952 , https://doi.org/10.1111/j.1570-7458.2009.00824.x
Description: This book is a 275-page argument for the place of theoretical biology in pest management research. Its general message is that contemporary pest management research emphasizes application of technology or strategic research at the expense of application of knowledge or tactical research, and that even the application of knowledge should actually be subservient to the development and extension of knowledge, theoretical research. Whenever we study a pest, we are presented with an opportunity to enhance, rather than merely apply, knowledge. It is argued that pest management research is currently failing itself because it is not doing this, and several areas of theoretical biology are identified as offering ways out of this situation.
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Intelligent design and biology

- Ramsden, Sean

Authors: Ramsden, Sean
Date: 2003
Subjects: Hume, David, 1711-1776 , Darwin, Charles, 1809-1882 , Paley, William, 1743-1805 , Dembski, William A., 1960- , Behe, Michael J., 1952- , Evolution (Biology) , Probabilities , Naturalism , Intelligent design (Teleology)
Language: English
Type: Thesis , Masters , MA
Identifier: vital:2739 , http://hdl.handle.net/10962/d1007561 , Hume, David, 1711-1776 , Darwin, Charles, 1809-1882 , Paley, William, 1743-1805 , Dembski, William A., 1960- , Behe, Michael J., 1952- , Evolution (Biology) , Probabilities , Naturalism , Intelligent design (Teleology)
Description: The thesis is that contrary to the received popular wisdom, the combination of David Hume's sceptical enquiry and Charles Darwin's provision of an alternative theoretical framework to the then current paradigm of natural theology did not succeed in defeating the design argument. I argue that William Paley's work best represented the status quo in the philosophy of biology circa 1800 and that with the logical mechanisms provided us by William Dembski in his seminal work on probability, there is a strong argument for thr work of Michael Behe to stand in a similar position today to that of Paley two centuries ago. The argument runs as follows: In Sections 1 and 2 of Chapter 1 I introduce the issues. In Section 3 I argue that William Paley's exposition of the design argument was archetypical of the natural theology school and that given Hume's already published criticism of the argument, Paley for one did not feel the design argument to be done for. I further argue in Section 4 that Hume in fact did no such thing and that neither did he see himself as having done so, but that the design argument was weak rather than fallacious. In Section 5 I outline the demise of natural theology as the dominant school of thought in the philosophy of biology, ascribing this to the rise of Darwinism and subsequently neo-Darwinism. I argue that design arguments were again not defeated but went into abeyance with the rise of a new paradigm associated with Darwinism, namely methodological naturalism. In Chapter 2 I advance the project by a discussion of William Dembski's formulation of design inferences, demonstrating their value in both everyday and technical usage. This is stated in Section 1. In Sections 2 and 3 I discuss Dembski's treatment of probability, whilst in Section 4 I examine Dembski's tying of different levels of probability to different mechanisms of explanation used in explicating the world. Section 5 is my analysis of the logic of the formal statement of the design argument according to Dembski. In Section 6 I encapsulate objections to Dembski. I conclude the chapter (with Section 7) by claiming that Dembski forwards a coherent model of design inferences that can be used in demonstrating that there is little difference between the way that Paley came to his conclusions two centuries ago and how modem philosophers of biology (such as I take Michael Behe to be, albeit that by profession he is a scientist) come to theirs when offering design explanations. Inference to the best explanation is demonstrated as lying at the crux of design arguments. In Chapter 3 I draw together the work of Michael Behe and Paley, showing through the mechanism of Dembski's work that they are closely related in many respects and that neither position is to be lightly dismissed. Section 1 introduces this. In Section 2 I introduce Behe's concept of irreducible complexity in the light of (functional) explanation. Section 3 is a detailed analysis of irreducible complexity. Section 4 raises and covers objections to Behe with the general theme being that (neo-) Darwinians beg the question against him. In Section 4 I apply the Dembskian mechanic directly to Behe's work. I argue that Behe does not quite meet the Dembskian criteria he needs to in order for his argument to stand as anything other than defeasible. However, in Section 5 I conclude by arguing that this is exactly what we are to expect from Behe's and similar theories, even within competing paradigms, in the philosophy of biology, given that inference to the best explanation is the logical lever therein at work. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
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Intercohort cannibalism and parturition-associated behaviour of captive-bred swordtail, Xiphophorus helleri (Pisces: Poeciliidae)

- Jones, Clifford Louis Wilshire

Authors: Jones, Clifford Louis Wilshire
Date: 2003
Subjects: Poeciliidae -- Behavior Xiphophorus helleri Fish culture
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:5351 , http://hdl.handle.net/10962/d1007812
Description: Adult fish that belong to the family Poeciliidae cannibalise juveniles, both in the wild and under captive conditions, but this behaviour has only been partly investigated in the Poeciliidae in some of the commercially valuable species. The objective of the research is to develop an understanding of intercohort cannibalism and parturition-associated behaviour in captive-bred swordtail (Xiphophorus helleri), with applications to industry and future research of other poeciliids. Experiments investigating the effect of adult stocking density and sex ratio on the production of juveniles were used to determine if cannibalism occurs under culture conditions. The average rate of intercohort cannibalism ranged from (5.5 to 53.9%), and was positively density dependent and independent of sex ratio, indicating that males and females were probably equally cannibalistic. The highest number of juveniles (1725.7±141.4) produced per tank over 70 days was obtained from two males and eight females. To develop a better understanding of adult and juvenile behaviour during parturition, fish were observed under controlled laboratory conditions using video and behaviours such as attack (burst of speed by an adult in the direction of a juvenile), escape (avoidance of cannibalism after attack) and cannibalism (predation of a live juvenile by an adult), for example, were identified. Under laboratory conditions most young escaped in downward direction after attack (49%) and most utilised the refuge made that was made available. Furthermore, most attacks (62-65%) and cannibalism (57-84%) occurred at the bottom. Since the presence of refuge significantly increased the rate of juvenile survival under culture conditions, it was hypothesised that the rate of cannibalism could be reduced under farming conditions if juveniles were protected when they escaped downwards. This hypothesis was accepted as it was found that refuge at the bottom of the water column or the inclusion of a false-bottom reduced the rate of cannibalism by 49% and 72%, respectively. Similarly, the hypothesise that the rate of cannibalism could be reduced if juveniles where given protection when escaping sideways (32% of juveniles escaped sideways in the laboratory) was also accepted when tested under farm-scale conditions because a false-side reduced the rate of cannibalism by an average of 45%. Since males and females were equally responsible for cannibalising juveniles in the laboratory, it was hypothesised that the rate of cannibalism would decrease proportionately with the removal of males (Le. 20% of the cannibals) from the population; the removal of males under farming conditions resulted in a 19.5% reduction in the rate of cannibalism. Since older juveniles were better able to escape cannibalism than neonates and since adults habituate to stimuli that previously resulted in attack behaviour, it was hypothesised that the rate of cannibalism would remain unaffected by the length of time that juveniles were exposed to adults in the breeding tanks. This hypothesis was also accepted when tested under farm conditions. However, some hypotheses based on laboratory observations were not accepted. For example, a constant low light intensity did not appear to decrease the rate of cannibalism under farm conditions; also, the occurrence of dead and deformed juveniles went unnoticed in the laboratory, and under farm conditions, where adults did not have access to the bottom of the tank, 10% of the harvest consisted of dead and deformed juveniles. It is concluded that technologies, such as bottom-refuge or a false-side, that increase the size of the liveharvest and allow for the removal of potentially less viable offspring are recommended for the commercial production of poeciliids. The overall similarity of X. helleri behaviour between the laboratory experiments and the farm-scale trials suggests that the post-partum behaviour of X. helleri remains consistent under these different conditions; thus, behaviour under one set of conditions may be used to predict behaviour under other conditions. The application and significance of extrapolations to industry and future research of X. helleri and possibly other poeciliids were discussed and the most applicable laboratory observations with the highest extrapolation capacity were proposed. Furthermore, techniques were developed to aid industry and future researchers in making predictions relating to behaviour of X. helleri under different conditions based on laboratory observations. The results were used to develop a model indicating that selection pressures against cannibalism are not likely to exist at the rate of cannibalism observed here since the potential genetic gain through kin survival and inclusive fitness was shown to be greater than any potential genetiC loss experienced by a victim of cannibalism. The model was successfully tested under a range of social conditions. Other possible explanations for cannibalism in poeciliids, such as parental manipulation, nutritional advantages, opportunistic predation and the recovery of energy are discussed. It is suggested that the most likely proximate cause of cannibalism under captive conditions is opportunistic predation. The theory that cannibalism ensures that only viable genes of the victim are expressed, through inclusive fitness, is a possible ultimate cause of cannibalism, which may have been inherited from feral ancestors of captive-bred X. helleri.
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Intra-versus inter-industry specialisation, labour market adjustment and poverty: implications for regional integration in Southern Africa

- Cattaneo, Nicolette S, Fryer, David

Authors: Cattaneo, Nicolette S , Fryer, David
Date: 2003
Subjects: To be catalogued
Language: English
Type: text , working paper
Identifier: http://hdl.handle.net/10962/470188 , vital:77334 , ISBN
Description: Although there is little doubt that increasing trade enhances overall welfare, the literature provides strong theoretical arguments and empirical evidence that there may be important adverse effects for particular groups and countries. It is useful to divide these into two categories. Firstly, there are the long run distributional consequences of trade, such as those highlighted by the Stolper-Samuelson theorem. Secondly, to the extent that the adjustment to equilibrium is not smooth, there are important dislocations associated with the movement of factors between industries in the transition period. These adverse effects are important, both because of their welfare implications, and because the affected groups or countries will constitute a source of political resistance to trade. Offsetting this picture, however, is the important view that such effects, both in terms of the long-run distributional consequences and the dislocations during adjustment, are likely to be less if liberalisation leads to intra-industry rather than inter-industry specialisation.
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Introduction [to the book "Scatter the Shrilling Bones" by Sithembele Isaac Xhegwana]

- Wright, Laurence

Authors: Wright, Laurence
Date: 2003
Language: English
Type: text , article
Identifier: vital:7056 , http://hdl.handle.net/10962/d1007417
Description: preprint , Scatter the Shrilling Bones by Sithembele Xhegwana comprises an ordered sequence of poems that conveys a journey both literal and spiritual. Revisitation is the organizing principle of the collection – the return to rural sources and origins by a consciousness estranged and illumined by modernity (cf. ‘The Return’). Underlying the collection is the theme of the night journey, whose archetype in western culture is Odysseus’ descent to the underworld – a pattern identified as such in the concluding essay ‘Starting from my Place: Notes on an Aesthetic’. The underworld here is literally the return to the home territory – a journey from Cape Town to the rural Eastern Cape – but also a revisiting of the mental world of traditional Africa: ‘Here at home, here all guilt begins’ (‘Homecoming’). The return journey is haunted by nightmare memories of mental illness, the schizophrenic episodes accompanying (or occasioned by?) the poet’s initial encounters with modernity. This illness is represented as both pathological and cultural – a price paid for challenging and rejecting the old certainties while grappling with new assumptions: “He undermines the ancestors, That’s why he suffers. Let him.” (‘To Himself’)
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Investigation of the comparative cost-effectiveness of different strategies for the management of multidrug-resistant tuberculosis

- Rockcliffe, Nicole

Authors: Rockcliffe, Nicole
Date: 2003
Subjects: Tuberculosis , Multidrug resistance , Tuberculosis -- Treatment
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:3788 , http://hdl.handle.net/10962/d1003266 , Tuberculosis , Multidrug resistance , Tuberculosis -- Treatment
Description: The tuberculosis epidemic is escalating in South Africa as well as globally. This escalation is exacerbated by the increasing prevalence of multidrug-resistant tuberculosis (MDRTB), which is defined by the World Health Organisation (WHO) as resistance of Mycobacteria to at least isoniazid and rifampicin. Multi-drug resistant tuberculosis is estimated to occur in 1-2% of newly diagnosed tuberculosis (TB) patients and in 4-8% of previously treated patients. MDRTB is both difficult and expensive to treat, costing up to 126 times that of drug-sensitive TB. Resource constrained countries such as South Africa often lack both the money and the infrastructure to treat this disease. The aim of this project was to determine whether the performance of a systematic review with subsequent economic modelling could influence the decision making process for policy makers. Data was gathered and an economic evaluation of MDRTB treatment was performed from the perspective of the South African Department of Health. Three treatment alternatives were identified: a protocol regimen of second line anti-tuberculosis agents, as recommended in the South African guidelines for MDRTB, an appropriate regimen designed for each patient according to the results of culture and drug susceptibility tests, and non-drug management. A decision-analysis model using DATA 3.0 by Treeage® was developed to estimate the costs of each alternative. Outcomes were measured in terms of cost alone as well as the ‘number of cases cured’ and the number of ‘years of life saved’ for patients dying, being cured or failing treatment. Drug, hospital and laboratory costs incurred using each alternative were included in the analysis. A sensitivity analysis was performed on all variables in order to identify threshold values that would change the outcome of the evaluation. Results of the decision analysis indicate that the individualised regimen was both the cheaper and more cost-effective regimen of the two active treatment options, and was estimated to cost R50 661 per case cured and R2 070 per year of life saved. The protocol regimen was estimated to cost R73 609 per case cured and R2 741 per year of life saved. The outcome of the decision analysis was sensitive to changes in some of the variables used to model the disease, particularly the daily cost of drugs, the length of time spent in hospital and the length of treatment received by those patients dying or failing treatment. This modelling exercise highlighted significant deficiencies in the quality of evidence on MDRTB management available to policy makers. Pragmatic choices based on operational and other logistic concerns may need to be reviewed when further information becomes available. A case can be made for the establishment of a national database of costing and efficacy information to guide future policy revisions of the South African MDRTB treatment programme, which is resource intensive and of only moderate efficacy. However, due to the widely disparate range of studies on which this evaluation was based, the outcome of the study may not be credible. In this case, the use of a systematic review with subsequent economic modelling could not validly influence policy-makers to change the decision that they made on the basis of drug availability.
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IsiXhosa insect names from the Eastern Cape, South Africa

- Mkize, Nolwazi, Villet, Martin H, Robertson, Mark P

Authors: Mkize, Nolwazi , Villet, Martin H , Robertson, Mark P
Date: 2003
Language: English
Type: Article
Identifier: vital:6859 , http://hdl.handle.net/10962/d1011148
Description: We present a list of isiXhosa names for a wide diversity of South African insects, and their English translations and scientific names, to contribute to bridging the knowledge gap between rural development workers and isiXhosa speakers. We interviewed 51 people in their homes at eight sites across the Eastern Cape and also included words from a published dictionary. We found 151 insect names, and categorized them into personal, dialectal and standard categories. Response-frequency distributions of the categories of names showed that the dialectal and standard lists were essentially complete. Sample accumulation curves showed levelling-off within sites and across the whole study, demonstrating that samples were adequate. The literal translations of some names show that isiXhosa speakers relate insects either to people, to their habitat and/or to their behaviour. The list can contribute to the standardization of knowledge of insects' indigenous names in South Africa for a variety of practical applications such as agricultural training and health services.
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Isolation of antigenic peptides of Cowdria ruminantium and their encoding genes using a genome-derived phage display library

- Fehrsen, Jeanni

Authors: Fehrsen, Jeanni
Date: 2003
Subjects: Bacteriophages -- Genetics Ruminants -- Diseases Heartwater
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:3920 , http://hdl.handle.net/10962/d1003979
Description: The development of new and effective vaccines and immunodiagnostic reagents requires the characterisation of antigenically relevant proteins and their interactions with the products of the immune system. Phage display technology was investigated as a means of elucidating some of the antigenic properties of the rickettsial parasite, Cowdria ruminantium (Cowdria). Randomly fragmented gene-derived libraries have been useful in elucidating viral and other epitopes, but only limited work has been done with entire genomes. A phage display library expressing a repertoire of Cowdria peptides was constructed. It was sufficiently large to represent the organism's genome, but lacked phages displaying peptides coded for by genes containing a Pvu II restriction enzyme site, including the one coding for the major antigenic protein 1 (MAP1). This was considered advantageous since MAP1 is immunodominant and has already been well characterised. Affinity selection with antibodies against Cowdria proteins other than MAP1 allowed several antibody-reactive peptides to be isolated. These selected sequences were placed in the context of the genome by screening a lambda bacteriophage library and by comparison with Cowdria DNA sequences. Apart from showing that antigenic mimics were present in the phage display library, six open reading frames encoding putative Cowdria proteins were identified. All had similarities to, or motifs in common with, membrane proteins and are thus likely to be exposed to the host's humoral immune system. Some of the proteins identified were larger than the antigens used to elicit the antibodies used for selection, probably as a result of the presence of cross-reactive epitopes. Despite limitations experienced when extending a fragmented-gene approach for epitope location to genomes, it was possible to identify an antigenic region on MAP1 by comparison with selected mimics. In addition, binding peptide sequences were identified with two monoclonal antibodies that had been raised against non-Cowdria antigens. An epitope on the VP7 protein of bluetongue virus was identified and peptides were found that reacted with a monoclonal antibody directed against malignant catarrhal fever virus. Thus, apart from being able to identify several potentially important Cowdria epitopes and genes, the fragmented-genome library holds promise as a universal reagent for identifying useful mimics.
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Isolation, expression and purification of the hydantoin hydrolysing enzymes of agrobacterium tumefaciens

- Clark, Sally-Ann

Authors: Clark, Sally-Ann
Date: 2003
Subjects: Agrobacterium tumefaciens , Amino acids Hydantoin Enzymes
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:4140 , http://hdl.handle.net/10962/d1016233
Description: The production of enantiomerically pure amino acids is of industrial importance as they are used in the synthesis of a number of pharmaceuticals, insecticides and herbicides and biologically active peptides and hormones. A number of microorganisms have been identified which possess hydantoin hydrolysing enzymes that stereoselectively convert racemic hydantoins into anantiomerically pure amino acids. Consequently these microorganisms and their enzymes are sought after as biocatalysts for the production of amino acids. The isolation of novel hydantoin hydrolising enzymes with unique or improved biocatalytic characteristics is of importance for the development of potential biocatalysts to be used in the production of enantiomerically pure amino acids. The genes encoding an N-carbamoyl-amino acid amidohydrolase, an enzyme involved in the hydrolysis of hydantoin, was isolated by screening a genomic DNA library of Agrobacterium tumefacience RU-AE01. Nucleotide sequence analysis of the region upstream of this gene revealed a fragment of a gene encoding the hydantoinase enzyme. I this study, a DNA probe consisting of the gene encoding the N-carbamoyl amino acid amidohydrolase, on a large enough fragment of the genomic DNA library which would allow for the simultaneous isolation the hydantoinase gene located upstream. Recombinant expression of the genes encoding hydantoin hydrolysing enzymes has been used to facilitate the production and purification of these enzymes for their use as biocatalysts. Two genes (ncaR1 and ncaR2) encoding different N-carbamoyl-amino acid amidohydrolases with distinct nucleotide and deduced amino acid sequences were isolated from the genome of A, tumefaciens RU-OR. In this study, the heterologous expression of ncaR1 and ncaR2 was explored. Investigation into the optimisation of the heterologous expression of ncaR1 showed that reducing the growth temperature of the recombinant E. coli producing NcaR1 resulted in a two-fold increase in N-carbamoyl-amino acid amidohydrolase activity and solubility. Furthermore, NcaR1 was produced with a C-terminal 6xHis tag, but NcaR1-6xHis did not possess N-carbamoyl amino acid amidohydrolase activity. Furthermore, purification of NcaR-6xHis under native conditions using affinity chromatography performed, and used for the production of antibodies.
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Judicial enforcement of socio-economic rights under the 1996 constitution : realising the vision of social justice

- Ngcukaitobi, T

Authors: Ngcukaitobi, T
Date: 2003
Subjects: South Africa. Constitution , South Africa. Bill of Rights , Civil rights -- South Africa , Human rights -- South Africa , South Africa -- Politics and government -- 1994- , South Africa -- Economic conditions -- 1991- , South Africa -- Social conditions -- 1994-
Language: English
Type: Thesis , Masters , LLM
Identifier: vital:3689 , http://hdl.handle.net/10962/d1003204 , South Africa. Constitution , South Africa. Bill of Rights , Civil rights -- South Africa , Human rights -- South Africa , South Africa -- Politics and government -- 1994- , South Africa -- Economic conditions -- 1991- , South Africa -- Social conditions -- 1994-
Description: Few legal developments in South Africa and elsewhere in the world in recent times have excited such controversy as the legal recognition of social and economic rights. South Africa has created a special place for itself in world affairs for being one of the countries that recognise socio-economic rights in a justiciable Bill of Rights. Partly this is in response to the appalling levels of poverty prevalent in the country which could potentially destabilise the new democracy. Improvement of the quality of life of every citizen is a crucial step in consolidating the constitutional democracy. The question that will face any court in giving effect to socio-economic rights is: how are these rights to be judicially enforced in a given context? The crux of this thesis lies in the resolution of this question. Firstly this thesis traces the philosophical foundations to the legal recognition of socio-economic rights. It is stated that the recognition of these rights in a justiciable bill of rights requires a conceptually sound understanding of the nature of obligations that these rights place on the state. It is emphasised that it is imperative that access to justice be facilitated to poor and vulnerable members of society for the realisation of the constitutional goal of addressing inequality. Particular concern and priority should in this context be given to women, children and the disabled. The study explores various judicial remedies and makes suggestions on new and innovative constitutional mechanisms for judicial enforcement of these rights. It is concluded that there is an important role to be played by civil society in giving meaningful effect to socio-economic rights.
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Lament for a Species: Anabantidae sandelia bainsii

- Mann, Chris

Authors: Mann, Chris
Date: 2003
Subjects: To be catalogued
Language: English
Type: text , poem
Identifier: http://hdl.handle.net/10962/468851 , vital:77134 , ISBN 0028-4459 , https://journals.co.za/doi/epdf/10.10520/AJA00284459_612
Description: New Coin is one of South Africa's most established and influential poetry journals. It publishes poetry, and poetry-related reviews, commentary and interviews. New Coin places a particular emphasis on evolving forms and experimental use of the English language in poetry in the South African context. In this sense it has traced the most exciting trends and currents in contemporary poetry in South Africa for a decade of more. The journal is published twice a year in June and December by the Institute for the Study of English in Africa (ISEA), Rhodes University.
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Language and value : the place of evaluation in linguistic theory

- Kilpert, Diana Mary

Authors: Kilpert, Diana Mary
Date: 2003
Subjects: Linguistics -- Philosophy Systemic grammar Discourse analysis English language -- Standardization Linguistic analysis (Linguistics) Functionalism (Linguistics) Halliday, M. A. K. (Michael Alexander Kirkwood), 1925- Chomsky, Noam Labov, William Pinker, Steven, 1954- Harris, Roy, 1931-
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:2353 , http://hdl.handle.net/10962/d1002635
Description: It is a central claim of modern linguistic theory that linguists do not prescribe, but describe language as it is, without pronouncing on correctness or judging one variety better than another. This attempt to exclude evaluation is motivated by a desire to be ' politically correct', which hinders objective analysis of language, and by an ill-advised imitation of the natural sciences, which obstructs the discipline's progress towards becoming a science in its own right. It involves linguists, as users of a valued variety, in self-deception and disingenuousness, distances them from the concerns of the ordinary language user, and betrays a failure to understand the involvement of social values in language, the nature of language itself, and the limits of linguistic science. On a wider scale, linguistics reflects society's devaluing and mechanisation of language. Despite growing concern expressed in the literature, and the incoherence that becomes apparent when linguists attempt to address social problems using a theory that regards language as an autonomous object, newcomers to the discipline continue to be taught that anti-prescriptivism is the natural corollary of a scientific approach to language. This thesis suggests that the way out of these difficulties is to rethink the meaning of ' theory' in linguistics. If we take the reflexivity of language seriously, building on M.A.K. Halliday's notion of 'linguistics as metaphor', we are reminded that a linguistic theory is made of language. Metalanguage must use the experiential and interpersonal meaning-making resources of everyday language. It follows that a linguistic theory cannot escape being evaluative, because evaluation is an inherent part of interpersonal meaning. If we fail to notice our own metalinguistic evaluation, this is because language disguises its evaluative meanings, or perhaps we are just not used to thinking of them as part of the grammar. To achieve clarity about the involvement of value in language, we need to turn our metalanguage back on itself - 'using the grammar to think with about the grammar' . Some ways of doing this are demonstrated here, turning the resources of systemic functional linguistics on linguists' own language. The circularity of this process should be seen not as a drawback but as a salutary reminder that linguistics is an interpretive rather than a discovery process. This knowledge should help us revalue language and make a place for evaluation in linguistic theory, paving the way for a socially responsible and productive linguistics.
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Life history traits of Bathyclarias nyasensis (Siluroidei) in Lake Malawi

- Kaunda, E, Hecht, Thomas

Authors: Kaunda, E , Hecht, Thomas
Date: 2003
Subjects: To be catalogued
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/446918 , vital:74570 , https://doi.org/10.1080/15627020.2003.11657193
Description: Life history traits, including age, growth, reproduction and diet of Bathyclarias nyasensis from Lake Malawi were studied between December 1996 and November 1998. Owing to reabsorption of pectoral spines with increasing fish size, and the relatively low number of spines that could be aged reliably, only otoliths were used to age fish. The maximum age for B. nyasensis was estimated at 14 years. There was no difference in growth rate between males and females.
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Locating the institution of traditional leadership within the institutional framework of South Africa's new democracy

- Mashele, Hlukanisa Prince

Authors: Mashele, Hlukanisa Prince
Date: 2003
Subjects: Tribal government -- South Africa , Political leadership -- South Africa , South Africa -- Politics and government -- 1994-
Language: English
Type: Thesis , Masters , MA
Identifier: vital:2858 , http://hdl.handle.net/10962/d1007512 , Tribal government -- South Africa , Political leadership -- South Africa , South Africa -- Politics and government -- 1994-
Description: This study looks into the role of the institution of traditional leadership in post-apartheid South Africa. It seeks to critically engage the debate on how to locate the institution within the new politico-constitutional framework. This is done with the main objective of proposing an altemative to the current state of affairs vis-à-vis traditional leadership and governance in South Africa. In order to clear the ground, the study first deals with the important question of democracy in relation to the institution of traditional leadership. In this regard, the study unearthed that the institution of traditional leadership is fundamentally undemocratic in character, as it is largely based on heredity and devoid of principles of democracy such as equality, accountability, etc. In order to put matters into perspective the study also delves into the history of the institution of traditional leadership with the aim of getting to the role that traditional leaders played in various epochs of South Africa's political development. This investigation reveals that the denting of the integrity of the institution of traditional leadership began with the advent of colonialism and worsened by successive apartheid regimes. It is at these stages of development that the institution was subordinated to a higher authority that sought to use the institution as an instrument of domination and oppression of the black majority. Considering this role, it would seem that the place that the space that the institution occupies in the post-apartheid South African governance framework is a compromise. The institution plays an advisory role at all levels of government - with their houses in both national and provincial legislatures, whilst traditional leaders sit as ex-officio members on local councils. However, traditional leaders fiercely contest this position as, in their view, this limits their powers. The main argument of this study is that for traditional leaders to be given an advisory role in the current and future governance framework of the country is a step in the right direction, as that serves to insulate the institution from active politics. For that reason, the study recommends that the institution of traditional leadership should occupy a cultural space in society - meaning that it should be responsible for the preservation of African customs and culture. This, therefore, means that the institution is better-placed to advise government on cultural and customary aspects of development. Whilst playing this role, the institution of traditional leadership should also -be brought into line with democratic ways of governance.
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Lorine Niedecker Collected Works. Ed. Jenny Penberthy. University of California Press, 2002

- Wessels, Paul

Authors: Wessels, Paul
Date: 2003
Subjects: To be catalogued
Language: English
Type: text , poem
Identifier: http://hdl.handle.net/10962/464663 , vital:76534 , ISBN 0028-4459 , https://journals.co.za/doi/epdf/10.10520/AJA00284459_604
Description: New Coin is one of South Africa's most established and influential poetry journals. It publishes poetry, and poetry-related reviews, commentary and interviews. New Coin places a particular emphasis on evolving forms and experimental use of the English language in poetry in the South African context. In this sense it has traced the most exciting trends and currents in contemporary poetry in South Africa for a decade of more. The journal is published twice a year in June and December by the Institute for the Study of English in Africa (ISEA), Rhodes University.
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