A development and management framework for a new Octopus vulgaris fishery in South Africa
- Authors: Oosthuizen, Ané
- Date: 2004
- Subjects: Common octopus -- South Africa Octopus fisheries -- South Africa Octopus fisheries -- South Africa -- Economic aspects Fishery management -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5255 , http://hdl.handle.net/10962/d1005098
- Description: A new policy incorporating an operational protocol was developed for the establishment of new fisheries in South Africa. The common octopus, Octopus vulgaris was used as a candidate species for the project. The operational protocol consisted of a three-phased development framework, namely information gathering (Phase 0), an experimental fishery (Phase 1) and the final implementation of a commercial fishery (Phase 2). The present study focussed on phase 0 of this theoretical framework and protocol and was implemented by using a proposed octopus pot fishery in South Africa as a case study. Phase 0 included a desktop study, information gathering in the field, an economic feasibility study and the formulation of a Fishery Management Plan and experimental design for the fishery. Information gaps identified during the desktop study were addressed during field investigations into the population structure and biology of O. vulgaris along the southeast coast. Immature females were found to use the intertidal area to feed and grow before migrating to the subtidal area to mature and spawn. Mean size differed substantially between intertidal and subtidal areas, with larger octopus found subtidally. Age and growth trials using tetracycline as a marker showed that O. vulgaris deposit daily growth lines in their beaks. A genetic study showed that there is most likely only one panmitic population along the coast. The economic feasibility study indicated that a longline pot fishery could be feasible provided a 30% catch in 6600 pots/month is attained. Only existing, debt-free vessels should be used in this fishery. The Fishery Management Plan proposed in this study includes management measures such as effort limitation of licences and gear, size restrictions, vessel monitoring systems, and observer programmes. Based on the population dynamics and biology of O. vulgaris it is suggested that a precautionary approach to developing fisheries for this species in both the inter- and subtidal areas along the South African coast.
- Full Text:
- Authors: Oosthuizen, Ané
- Date: 2004
- Subjects: Common octopus -- South Africa Octopus fisheries -- South Africa Octopus fisheries -- South Africa -- Economic aspects Fishery management -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5255 , http://hdl.handle.net/10962/d1005098
- Description: A new policy incorporating an operational protocol was developed for the establishment of new fisheries in South Africa. The common octopus, Octopus vulgaris was used as a candidate species for the project. The operational protocol consisted of a three-phased development framework, namely information gathering (Phase 0), an experimental fishery (Phase 1) and the final implementation of a commercial fishery (Phase 2). The present study focussed on phase 0 of this theoretical framework and protocol and was implemented by using a proposed octopus pot fishery in South Africa as a case study. Phase 0 included a desktop study, information gathering in the field, an economic feasibility study and the formulation of a Fishery Management Plan and experimental design for the fishery. Information gaps identified during the desktop study were addressed during field investigations into the population structure and biology of O. vulgaris along the southeast coast. Immature females were found to use the intertidal area to feed and grow before migrating to the subtidal area to mature and spawn. Mean size differed substantially between intertidal and subtidal areas, with larger octopus found subtidally. Age and growth trials using tetracycline as a marker showed that O. vulgaris deposit daily growth lines in their beaks. A genetic study showed that there is most likely only one panmitic population along the coast. The economic feasibility study indicated that a longline pot fishery could be feasible provided a 30% catch in 6600 pots/month is attained. Only existing, debt-free vessels should be used in this fishery. The Fishery Management Plan proposed in this study includes management measures such as effort limitation of licences and gear, size restrictions, vessel monitoring systems, and observer programmes. Based on the population dynamics and biology of O. vulgaris it is suggested that a precautionary approach to developing fisheries for this species in both the inter- and subtidal areas along the South African coast.
- Full Text:
A fuzzy classification technique for predicting species' distributions: applications using invasive alien plants and indigenous insects
- Robertson, Mark P, Villet, Martin H, Palmer, Anthony R
- Authors: Robertson, Mark P , Villet, Martin H , Palmer, Anthony R
- Date: 2004
- Language: English
- Type: text , Article
- Identifier: vital:6897 , http://hdl.handle.net/10962/d1011659 , http://dx.doi.org/10.1111/j.1366-9516.2004.00108.x
- Description: A new predictive modelling technique called the fuzzy envelope model (FEM) is introduced. The technique can be used to predict potential distributions of organisms using presence-only locality records and a set of environmental predictor variables. FEM uses fuzzy logic to classify a set of predictor variable maps based on the values associated with presence records and combines the results to produce a potential distribution map for a target species. This technique represents several refinements of the envelope approach used in the BIOCLIM modelling package. These refinements are related to the way in which FEMs deal with uncertainty, the way in which this uncertainty is represented in the resultant potential distribution maps, and the way that these maps can be interpreted and applied. To illustrate its potential use in biogeographical studies, FEM was applied to predicting the potential distribution of three invasive alien plant species (Lantana camara L., Ricinus communis L. and Solanum mauritianum Scop.), and three native cicada species (Capicada decora Germar, Platypleura deusta Thun. and P. capensis L.) in South Africa, Lesotho and Swaziland. These models were quantitatively compared with models produced by means of the algorithm used in the BIOCLIM modelling package, which is referred to as a crisp envelope model (the CEM design). The average performance of models of the FEM design was consistently higher than those of the CEM design. There were significant differences in model performance among species but there was no significant interaction between model design and species. The average maximum kappa value ranged from 0.70 to 0.90 for FEM design and from 0.57 to 0.89 for the CEM design, which can be described as 'good' to 'excellent' using published ranges of agreement for the kappa statistic. This technique can be used to predict species' potential distributions that could be used for identifying regions at risk from invasion by alien species. These predictions could also be used in conservation planning in the case of native species.
- Full Text:
- Authors: Robertson, Mark P , Villet, Martin H , Palmer, Anthony R
- Date: 2004
- Language: English
- Type: text , Article
- Identifier: vital:6897 , http://hdl.handle.net/10962/d1011659 , http://dx.doi.org/10.1111/j.1366-9516.2004.00108.x
- Description: A new predictive modelling technique called the fuzzy envelope model (FEM) is introduced. The technique can be used to predict potential distributions of organisms using presence-only locality records and a set of environmental predictor variables. FEM uses fuzzy logic to classify a set of predictor variable maps based on the values associated with presence records and combines the results to produce a potential distribution map for a target species. This technique represents several refinements of the envelope approach used in the BIOCLIM modelling package. These refinements are related to the way in which FEMs deal with uncertainty, the way in which this uncertainty is represented in the resultant potential distribution maps, and the way that these maps can be interpreted and applied. To illustrate its potential use in biogeographical studies, FEM was applied to predicting the potential distribution of three invasive alien plant species (Lantana camara L., Ricinus communis L. and Solanum mauritianum Scop.), and three native cicada species (Capicada decora Germar, Platypleura deusta Thun. and P. capensis L.) in South Africa, Lesotho and Swaziland. These models were quantitatively compared with models produced by means of the algorithm used in the BIOCLIM modelling package, which is referred to as a crisp envelope model (the CEM design). The average performance of models of the FEM design was consistently higher than those of the CEM design. There were significant differences in model performance among species but there was no significant interaction between model design and species. The average maximum kappa value ranged from 0.70 to 0.90 for FEM design and from 0.57 to 0.89 for the CEM design, which can be described as 'good' to 'excellent' using published ranges of agreement for the kappa statistic. This technique can be used to predict species' potential distributions that could be used for identifying regions at risk from invasion by alien species. These predictions could also be used in conservation planning in the case of native species.
- Full Text:
A geological evaluation of marine diamond placer deposits on the central Namibian inner shelf : a case study of the Hottentot Bay area
- Authors: Rau, Grant
- Date: 2004 , 2013-06-03
- Subjects: Diamond mines and mining -- Namibia , Ocean mining -- Namibia , Marine mineral resources
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5038 , http://hdl.handle.net/10962/d1007554 , Diamond mines and mining -- Namibia , Ocean mining -- Namibia , Marine mineral resources
- Description: This study focusses on the marine diamond placers within Exclusive Prospecting Licence 1950 and Mining Licence 103a, located northwest of the north-facing Hottentot Bay which is 60 km north of Lüderitz, along the central Namibian coastline. The thesis follows the natural geological evolution of the marine placer deposit from primary source, through alluvial and/or glacial transportation, concentration along the coastline by wave, aeolian and alluvial/sheet-wash processes and finally marine diamond placer preservation. All of these processes are reviewed as they are important in understanding of the evolution marine placer deposits. The poly-cyclic role of coastal aeolian, alluvial, and marine processes, in marine placer enrichment is shown to be particularly important in considered target identification and prioritisation. A detailed bathymetric, sonographic and seismic interpretation, is an integral part of diamond placer exploration, and was used to examine and describe surficial and sub-bottom characteristics within the study area. Marine placers are formed along palaeo-strandlines during periods of marine transgression and regression and are therefore fundamental in marine placer exploration. A detailed bathymetry map, compiled for this study, of the area between Lüderitz Bay and Clara Hill, provides the foundation for a detailed terrace level investigation. Regionally, twelve well-developed stillstand levels are identified, nine of which fall into the study area. These interpretations are compared with global eustatic as well as terrace and resource/reserve levels in the Lüderitz area and are found to correlate well. Sediment dynamic studies involve the use of accredited application software for wave refraction modelling, to determine the wave angle and orbital wave velocity at the seabed. Bedload velocities, required to move diamonds of specific sizes, can be empirically determined and therefore areas of diamond entrainment and deposition can be modelled and target features delineated and prioritised. These detailed interpretations provide a sound platform for evaluating diamond placer process models in the study area. By integrating both previously published and newly formulated ideas, a revised, holistic model for the formation of marine diamond placer deposits in central Namibian is postulated. The proposed model is tested by comparing it to the lateral distribution of presently defined resource/reserve areas in the Lüderitz area and shows a close correlation with most of these enriched deposits. Based on this model, a matrix for the delineation and prioritisation of marine placer deposits is developed and the best target features within the study area are identified. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Authors: Rau, Grant
- Date: 2004 , 2013-06-03
- Subjects: Diamond mines and mining -- Namibia , Ocean mining -- Namibia , Marine mineral resources
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5038 , http://hdl.handle.net/10962/d1007554 , Diamond mines and mining -- Namibia , Ocean mining -- Namibia , Marine mineral resources
- Description: This study focusses on the marine diamond placers within Exclusive Prospecting Licence 1950 and Mining Licence 103a, located northwest of the north-facing Hottentot Bay which is 60 km north of Lüderitz, along the central Namibian coastline. The thesis follows the natural geological evolution of the marine placer deposit from primary source, through alluvial and/or glacial transportation, concentration along the coastline by wave, aeolian and alluvial/sheet-wash processes and finally marine diamond placer preservation. All of these processes are reviewed as they are important in understanding of the evolution marine placer deposits. The poly-cyclic role of coastal aeolian, alluvial, and marine processes, in marine placer enrichment is shown to be particularly important in considered target identification and prioritisation. A detailed bathymetric, sonographic and seismic interpretation, is an integral part of diamond placer exploration, and was used to examine and describe surficial and sub-bottom characteristics within the study area. Marine placers are formed along palaeo-strandlines during periods of marine transgression and regression and are therefore fundamental in marine placer exploration. A detailed bathymetry map, compiled for this study, of the area between Lüderitz Bay and Clara Hill, provides the foundation for a detailed terrace level investigation. Regionally, twelve well-developed stillstand levels are identified, nine of which fall into the study area. These interpretations are compared with global eustatic as well as terrace and resource/reserve levels in the Lüderitz area and are found to correlate well. Sediment dynamic studies involve the use of accredited application software for wave refraction modelling, to determine the wave angle and orbital wave velocity at the seabed. Bedload velocities, required to move diamonds of specific sizes, can be empirically determined and therefore areas of diamond entrainment and deposition can be modelled and target features delineated and prioritised. These detailed interpretations provide a sound platform for evaluating diamond placer process models in the study area. By integrating both previously published and newly formulated ideas, a revised, holistic model for the formation of marine diamond placer deposits in central Namibian is postulated. The proposed model is tested by comparing it to the lateral distribution of presently defined resource/reserve areas in the Lüderitz area and shows a close correlation with most of these enriched deposits. Based on this model, a matrix for the delineation and prioritisation of marine placer deposits is developed and the best target features within the study area are identified. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
A new broom: feature
- Cocks, Michelle L, Dold, Anthony P, Sizane, Nomtunzi
- Authors: Cocks, Michelle L , Dold, Anthony P , Sizane, Nomtunzi
- Date: 2004
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141404 , vital:37969 , https://hdl.handle.net/10520/EJC112779
- Description: Traditional grass brooms keep certain cultural practices alive in urban areas and provide rural people with a means to earn an income.
- Full Text:
- Authors: Cocks, Michelle L , Dold, Anthony P , Sizane, Nomtunzi
- Date: 2004
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141404 , vital:37969 , https://hdl.handle.net/10520/EJC112779
- Description: Traditional grass brooms keep certain cultural practices alive in urban areas and provide rural people with a means to earn an income.
- Full Text:
A phenological and bioclimatic analysis of honey yield in South Africa
- Authors: Illgner, Peter Mark
- Date: 2004
- Subjects: Bee culture -- South Africa -- Statistics Honeybee -- South Africa Bee culture -- South Africa -- Management Honey plants -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5813 , http://hdl.handle.net/10962/d1007153
- Description: This study has investigated the interaction between honeybees and their forage plants and the impact of selected climatic variables on honey production in South Africa. Twenty-seven scale-hive records from 25 localities have been used as a measure of colony honey reserves. At least 944 plant species are visited by honeybees in South Africa for their nectar and/or pollen, with more than half providing both rewards. The entire honeybee flora encompasses 532 genera and 137 families. The flowering phenologies of the different reward categories of the indigenous forage plants are all significantly and positively correlated at the 0.05 level. Similarly, species offering both rewards are significantly and positively correlated with the flowering phenology of the null flora. The same results were obtained for correlations between the different reward categories of the exotic forage plants in South Africa. Of the 30 species pairs which fulfilled the criteria for selection, 23 occurred in sympatry, 5 in allopatry and 2 in possible parapatry. There is evidence for both competition and facilitation within different indigenous species pairs. The lack of geographical correlation in the intra-annual variation in honey stores and the near absence of any statistically significant (p < 0.05) honey related intra-annual intracolonial correlations may indicate that the former is more important than the latter for the determination of the level of honey reserves within a colony. Only one statistically significant correlation was found between either scale-hive record from the University of Pretoria Experimental Farm and any of the selected climatic variables. A one month lag period and/or possible seasonal effects were detected for each variable, with the exception of the duration of sunshine, in the autocorrelation analyses. A possible 12 month seasonal period was also identified in the single series fourier analyses for a number of variables. Similarly, 12 months was also the most frequently recurring period in the crossspectral results for the one scale-hive record (H42). Any activities which have an impact on the landscape have the potential to affect honeybees and/or their forage plants. Honeybee crop or plant pollination may also enhance yields for commercial farmers and facilitate rural food security.
- Full Text:
- Authors: Illgner, Peter Mark
- Date: 2004
- Subjects: Bee culture -- South Africa -- Statistics Honeybee -- South Africa Bee culture -- South Africa -- Management Honey plants -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5813 , http://hdl.handle.net/10962/d1007153
- Description: This study has investigated the interaction between honeybees and their forage plants and the impact of selected climatic variables on honey production in South Africa. Twenty-seven scale-hive records from 25 localities have been used as a measure of colony honey reserves. At least 944 plant species are visited by honeybees in South Africa for their nectar and/or pollen, with more than half providing both rewards. The entire honeybee flora encompasses 532 genera and 137 families. The flowering phenologies of the different reward categories of the indigenous forage plants are all significantly and positively correlated at the 0.05 level. Similarly, species offering both rewards are significantly and positively correlated with the flowering phenology of the null flora. The same results were obtained for correlations between the different reward categories of the exotic forage plants in South Africa. Of the 30 species pairs which fulfilled the criteria for selection, 23 occurred in sympatry, 5 in allopatry and 2 in possible parapatry. There is evidence for both competition and facilitation within different indigenous species pairs. The lack of geographical correlation in the intra-annual variation in honey stores and the near absence of any statistically significant (p < 0.05) honey related intra-annual intracolonial correlations may indicate that the former is more important than the latter for the determination of the level of honey reserves within a colony. Only one statistically significant correlation was found between either scale-hive record from the University of Pretoria Experimental Farm and any of the selected climatic variables. A one month lag period and/or possible seasonal effects were detected for each variable, with the exception of the duration of sunshine, in the autocorrelation analyses. A possible 12 month seasonal period was also identified in the single series fourier analyses for a number of variables. Similarly, 12 months was also the most frequently recurring period in the crossspectral results for the one scale-hive record (H42). Any activities which have an impact on the landscape have the potential to affect honeybees and/or their forage plants. Honeybee crop or plant pollination may also enhance yields for commercial farmers and facilitate rural food security.
- Full Text:
A phenomenological exploration of adoptive parents' motivation for and experience of transracial adoption in South Africa
- Authors: Attwell, Terry-Anne
- Date: 2004
- Subjects: Interracial adoption -- South Africa , Race awareness in children -- South Africa , Prejudices in children -- South Africa , Adoption -- Law and legislation -- South Africa , Children's rights -- South Africa , South Africa -- Race relations
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2927 , http://hdl.handle.net/10962/d1002436 , Interracial adoption -- South Africa , Race awareness in children -- South Africa , Prejudices in children -- South Africa , Adoption -- Law and legislation -- South Africa , Children's rights -- South Africa , South Africa -- Race relations
- Description: Prior to the democratic elections of 1994, South Africa was daunted by legislation flooded with racial segregation. Adoption across racial lines is, because of South Africa’s racially segregated past, a relatively recent phenomenon in this country. The number of legal adoptions has increased dramatically, especially after its legalization in 1991. Parents may adopt across racial lines for an array of different reasons, from not being able to conceive a baby, to wanting to give a child the best opportunity in life. This study explored the experiences of white parents who have adopted black children, paying particular attention to how they deal with issues of “racial” identity. In-depth interviews were used to generate qualitative data pertaining to the parental perceptions of their motivation for, and experiences of adopting a child transracially in South Africa. The study aimed to explore their motivation for adopting and experiences, as well as issues relating to “racial” identity. Recommendations have been made to assist parents who are interested in adopting transracially. The report presents findings relating to the unique characteristics of the participants who have adopted transracially. These include adopters’ motivation and thought processes before taking the relevant steps to adopt transracially; the support that they have received from others in their decision to adopt transracially; communication patterns; their relevant concerns regarding the future of their adopted child; and issues pertaining to race, culture, heritage, prejudices and stereotypes. The findings suggest that parents were pragmatic, without regrets, in their views about adopting across racial lines. The parents’ motivations for adopting across racial lines were very similar to various perspectives, but were all due to the fact that they were unable to have biological children. Parents were aware of the child’s identity and cultural issues, which may be more perceptible in the future. Their perceptions, views and opinions, and the future concerns of their children were not unrealistic. Due to the children’s young age a follow-up study of these children should be considered.
- Full Text:
- Authors: Attwell, Terry-Anne
- Date: 2004
- Subjects: Interracial adoption -- South Africa , Race awareness in children -- South Africa , Prejudices in children -- South Africa , Adoption -- Law and legislation -- South Africa , Children's rights -- South Africa , South Africa -- Race relations
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2927 , http://hdl.handle.net/10962/d1002436 , Interracial adoption -- South Africa , Race awareness in children -- South Africa , Prejudices in children -- South Africa , Adoption -- Law and legislation -- South Africa , Children's rights -- South Africa , South Africa -- Race relations
- Description: Prior to the democratic elections of 1994, South Africa was daunted by legislation flooded with racial segregation. Adoption across racial lines is, because of South Africa’s racially segregated past, a relatively recent phenomenon in this country. The number of legal adoptions has increased dramatically, especially after its legalization in 1991. Parents may adopt across racial lines for an array of different reasons, from not being able to conceive a baby, to wanting to give a child the best opportunity in life. This study explored the experiences of white parents who have adopted black children, paying particular attention to how they deal with issues of “racial” identity. In-depth interviews were used to generate qualitative data pertaining to the parental perceptions of their motivation for, and experiences of adopting a child transracially in South Africa. The study aimed to explore their motivation for adopting and experiences, as well as issues relating to “racial” identity. Recommendations have been made to assist parents who are interested in adopting transracially. The report presents findings relating to the unique characteristics of the participants who have adopted transracially. These include adopters’ motivation and thought processes before taking the relevant steps to adopt transracially; the support that they have received from others in their decision to adopt transracially; communication patterns; their relevant concerns regarding the future of their adopted child; and issues pertaining to race, culture, heritage, prejudices and stereotypes. The findings suggest that parents were pragmatic, without regrets, in their views about adopting across racial lines. The parents’ motivations for adopting across racial lines were very similar to various perspectives, but were all due to the fact that they were unable to have biological children. Parents were aware of the child’s identity and cultural issues, which may be more perceptible in the future. Their perceptions, views and opinions, and the future concerns of their children were not unrealistic. Due to the children’s young age a follow-up study of these children should be considered.
- Full Text:
A phenomenological hermeneutic investigation into the psychoanalytic psychotherapist's experience of using the psychoanalytic couch
- Authors: Milton, Christopher
- Date: 2004
- Subjects: Freud, Sigmund, 1856-1939 -- Criticism and interpretation Psychoanalysis Psychotherapy Psychotherapy -- Methods
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3162 , http://hdl.handle.net/10962/d1007655
- Description: The aim of this study was to describe and critically explore the psychoanalytic, psychotherapist's lived experience of the technique of using the couch. Through examination of the literature a question was formulated that would disclose the analyst's experience of the technique of using the couch. Four experienced psychoanalytic practitioners who could be operationally defined as 'analysts' were interviewed. Using a phenomenological method the protocols were comprehensively analyzed to produce descriptions of the general structure of the experience. These were then texturally enhanced using interleaved direct citations from the interviews. The structural and textural 'findings ' so produced were then hermeneutically dialogued with contemporary psychoanalytic notions of critical discourse and intersubjectivity. The phenomenological ' findings ' of the study disclosed the meaning of the couch as context-based, paradoxical and ambiguous. The couch was found to be a symbol of the analyst as analyst and the process as authentic analysis. Furthermore, at its best, the couch was found to mediate a mode of being that is containing and intimate and in which psychological life may be evoked, tracked and interpreted. The most significant contributor to this mode of being was found to be privacy, which, in particular, helps the analyst maintain an analytic attitude. The couch was also found to be significantly implicated in the generation of an intersubjective analytic third and to support reverie. These 'findings' were hermeneutically dialogued with literature on the couch as well as contemporary psychoanalytic theoretical notions. The dialogue fell into three foci. The first focus entailed deconstructing the meaning of the couch as context-based and ambiguous and not essential. The second pursued critiques of the role that the couch plays in domination, of its function as a symbol/evocative object and of the way in which it shapes being-together, bodily attunement, privacy, the intersubjective analytic third and reverie. Finally the 'findings' were critically examined in terms of both Lacan's notion 'analytic discourse ' and its role in revealing/concealing the analysand as subject. The study concludes with an examination of its own limitations and suggestions for further research.
- Full Text:
- Authors: Milton, Christopher
- Date: 2004
- Subjects: Freud, Sigmund, 1856-1939 -- Criticism and interpretation Psychoanalysis Psychotherapy Psychotherapy -- Methods
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3162 , http://hdl.handle.net/10962/d1007655
- Description: The aim of this study was to describe and critically explore the psychoanalytic, psychotherapist's lived experience of the technique of using the couch. Through examination of the literature a question was formulated that would disclose the analyst's experience of the technique of using the couch. Four experienced psychoanalytic practitioners who could be operationally defined as 'analysts' were interviewed. Using a phenomenological method the protocols were comprehensively analyzed to produce descriptions of the general structure of the experience. These were then texturally enhanced using interleaved direct citations from the interviews. The structural and textural 'findings ' so produced were then hermeneutically dialogued with contemporary psychoanalytic notions of critical discourse and intersubjectivity. The phenomenological ' findings ' of the study disclosed the meaning of the couch as context-based, paradoxical and ambiguous. The couch was found to be a symbol of the analyst as analyst and the process as authentic analysis. Furthermore, at its best, the couch was found to mediate a mode of being that is containing and intimate and in which psychological life may be evoked, tracked and interpreted. The most significant contributor to this mode of being was found to be privacy, which, in particular, helps the analyst maintain an analytic attitude. The couch was also found to be significantly implicated in the generation of an intersubjective analytic third and to support reverie. These 'findings' were hermeneutically dialogued with literature on the couch as well as contemporary psychoanalytic theoretical notions. The dialogue fell into three foci. The first focus entailed deconstructing the meaning of the couch as context-based and ambiguous and not essential. The second pursued critiques of the role that the couch plays in domination, of its function as a symbol/evocative object and of the way in which it shapes being-together, bodily attunement, privacy, the intersubjective analytic third and reverie. Finally the 'findings' were critically examined in terms of both Lacan's notion 'analytic discourse ' and its role in revealing/concealing the analysand as subject. The study concludes with an examination of its own limitations and suggestions for further research.
- Full Text:
A resource-based learning approach to professional development: the case of the ACEE (Rhodes University Advanced Certificate in Environmental Education)
- Agria Russo, Vladimir Kiluange
- Authors: Agria Russo, Vladimir Kiluange
- Date: 2004
- Subjects: Rhodes University Advanced Certificate in Environmental Education Teaching -- Aids and devices -- South Africa Environmental education -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1741 , http://hdl.handle.net/10962/d1003625
- Description: This interpretative case study derives and examines the characterising features of the resource-based learning approach used in the Rhodes University Advanced Certificate in Environmental Education (ACEE), particularly in Module 1 (Environment and Environmental Issues) and Module 3 (Contemporary Environmental Issues). The study explores processes of resource-based learning through the analysis of three individual case stories of participants’ experience in adaptive use of learning support materials in different work contexts. It discusses the relationship between thematic categories related to participants’ experience of assignment work, and course design and course implementation. This study indicates that resource-based learning processes in the ACEE involve curriculum deliberation and the use of resource packs in supporting participants’ practice. It also indicates that the ACEE’s practice-based orientation to workplace-based assignments plays an important role in supporting the adaptive use of learning support materials, encouraging lifelong learning and developing applied competence. It highlights the significance of reflexive narration of practice in improving course participants’ educational practice. A diagrammatic representation of the unfolding and intermeshed characterising features of resource-based learning is presented. The study argues that resource-based learning in the ACEE appears to create possibilities for the course participants to become scaffolders and co-constructors of their own learning. It notes that resource-based learning can enable course participants to take ownership of their educational and workplace needs, and to develop skills and competences necessary to respond to environmental issues and risks in southern Africa. This study examines the potential that the reflexive narration of practice has in supporting course participants to engage in better ways of doing things in their workplace-based contexts. This study provides some recommendations to enhance the Advanced Certificate in Environmental Education as well as some ‘fuzzy generalisations’ that might guide the Southern African Development Community (SADC) Regional Environmental Education Programme (REEP) in the development and adaptation of professional development courses in southern Africa.
- Full Text:
- Authors: Agria Russo, Vladimir Kiluange
- Date: 2004
- Subjects: Rhodes University Advanced Certificate in Environmental Education Teaching -- Aids and devices -- South Africa Environmental education -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1741 , http://hdl.handle.net/10962/d1003625
- Description: This interpretative case study derives and examines the characterising features of the resource-based learning approach used in the Rhodes University Advanced Certificate in Environmental Education (ACEE), particularly in Module 1 (Environment and Environmental Issues) and Module 3 (Contemporary Environmental Issues). The study explores processes of resource-based learning through the analysis of three individual case stories of participants’ experience in adaptive use of learning support materials in different work contexts. It discusses the relationship between thematic categories related to participants’ experience of assignment work, and course design and course implementation. This study indicates that resource-based learning processes in the ACEE involve curriculum deliberation and the use of resource packs in supporting participants’ practice. It also indicates that the ACEE’s practice-based orientation to workplace-based assignments plays an important role in supporting the adaptive use of learning support materials, encouraging lifelong learning and developing applied competence. It highlights the significance of reflexive narration of practice in improving course participants’ educational practice. A diagrammatic representation of the unfolding and intermeshed characterising features of resource-based learning is presented. The study argues that resource-based learning in the ACEE appears to create possibilities for the course participants to become scaffolders and co-constructors of their own learning. It notes that resource-based learning can enable course participants to take ownership of their educational and workplace needs, and to develop skills and competences necessary to respond to environmental issues and risks in southern Africa. This study examines the potential that the reflexive narration of practice has in supporting course participants to engage in better ways of doing things in their workplace-based contexts. This study provides some recommendations to enhance the Advanced Certificate in Environmental Education as well as some ‘fuzzy generalisations’ that might guide the Southern African Development Community (SADC) Regional Environmental Education Programme (REEP) in the development and adaptation of professional development courses in southern Africa.
- Full Text:
A study of Ted Hughes's Birthday letters
- Authors: Highman, Kathryn Barbara
- Date: 2004
- Subjects: Hughes, Ted, 1930-1998 Criticism and interpretation Hughes, Ted, 1930-1998 Birthday Letters
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2193 , http://hdl.handle.net/10962/d1002235
- Description: This thesis focusses on the literary self-reflexivity of Birthday Letters, Ted Hughes's collection of poems addressed to his long-dead first wife, poet Sylvia Plath. By close attention to the language of select poems and a discussion of cross-referencing images and allusions across the volume, and intertextually, I argue that the collection is more self-consciously ordered and designed than the mainly biographical criticism the work has met with suggests. The thesis focusses on the poets' art rather than the biographical context of Birthday Letters, though it does not draw a neat distinction between their lives and their poetry - rather it demonstrates how Birthday Letters itself treats the relationship of art to life thematically. The introduction outlines the context of the volume's genesis and publication and the notions of poetry, myth and drama out of which Hughes works, and introduces the central metaphor of metamorphosis as figured in Ariel's song "Full Fathom Five" from The Tempest, as well as the importance of that play to Plath. Each of the chapters that follow focusses on a cluster of inter-related imagery through a discussion of four or five key poems. Chapter One examines Hughes's portrayal of himself as imprisoned by Plath's poetic portraits, and relates this to the recurring motifs of the snapshot and the Medusa myth. The poems discussed emphasize Hughes's consciousness of the metamorphic and "magical" relationship of art to life. The second chapter discusses Hughes's use of the myth of the labyrinth and the Minotaur, tracing it back to Plath's writings and reading, and pointing out its self-reflexivity: the labyrinth figures Hughes's own loss as well as the labyrinthine nature of writing. The third chapter considers the themes of possession and loss, and how they attach themselves to images of houses and jewels. Possession and loss tum, self-reflexively, upon issues of inheritance and remembrance, notably Hughes's inheritance of Plath's poetic legacy, and his remembrance of her and her poetry through his own poetry. The conclusion pursues connections between the observations made in the separate chapters, outlining the larger context out of which the poems emerge, and returning to the trope of metamorphosis as figured in "Full Fathom Five"
- Full Text:
- Authors: Highman, Kathryn Barbara
- Date: 2004
- Subjects: Hughes, Ted, 1930-1998 Criticism and interpretation Hughes, Ted, 1930-1998 Birthday Letters
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2193 , http://hdl.handle.net/10962/d1002235
- Description: This thesis focusses on the literary self-reflexivity of Birthday Letters, Ted Hughes's collection of poems addressed to his long-dead first wife, poet Sylvia Plath. By close attention to the language of select poems and a discussion of cross-referencing images and allusions across the volume, and intertextually, I argue that the collection is more self-consciously ordered and designed than the mainly biographical criticism the work has met with suggests. The thesis focusses on the poets' art rather than the biographical context of Birthday Letters, though it does not draw a neat distinction between their lives and their poetry - rather it demonstrates how Birthday Letters itself treats the relationship of art to life thematically. The introduction outlines the context of the volume's genesis and publication and the notions of poetry, myth and drama out of which Hughes works, and introduces the central metaphor of metamorphosis as figured in Ariel's song "Full Fathom Five" from The Tempest, as well as the importance of that play to Plath. Each of the chapters that follow focusses on a cluster of inter-related imagery through a discussion of four or five key poems. Chapter One examines Hughes's portrayal of himself as imprisoned by Plath's poetic portraits, and relates this to the recurring motifs of the snapshot and the Medusa myth. The poems discussed emphasize Hughes's consciousness of the metamorphic and "magical" relationship of art to life. The second chapter discusses Hughes's use of the myth of the labyrinth and the Minotaur, tracing it back to Plath's writings and reading, and pointing out its self-reflexivity: the labyrinth figures Hughes's own loss as well as the labyrinthine nature of writing. The third chapter considers the themes of possession and loss, and how they attach themselves to images of houses and jewels. Possession and loss tum, self-reflexively, upon issues of inheritance and remembrance, notably Hughes's inheritance of Plath's poetic legacy, and his remembrance of her and her poetry through his own poetry. The conclusion pursues connections between the observations made in the separate chapters, outlining the larger context out of which the poems emerge, and returning to the trope of metamorphosis as figured in "Full Fathom Five"
- Full Text:
A study of the criteria teachers use when selecting learning material
- Authors: Koch, Lynn
- Date: 2004
- Subjects: Textbooks -- South Africa -- Evaluation Curriculum planning -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1780 , http://hdl.handle.net/10962/d1003665
- Description: This study investigates the criteria teachers use when selecting and evaluating learning support material, in particular, English second language textbooks. The study seeks to determine what informs the criteria that teachers use for selection. The study is conducted against the backdrop of Curriculum 2005 (C2005) and outlines the C2005 revision process and the subsequent introduction of the Revised National Curriculum Statement (RNCS). Through a series of focus group interviews, the researcher explores the criteria teachers use for evaluation. Many of the teachers in this study did not have clearly articulated criteria; rather, they drew on implicit criteria and mentioned favoured qualities or attributes that they looked for in a textbook. In addition, the teachers in the focus groups used criteria that had been ‘told’ rather than ‘owned’ and had not developed their own sets of criteria. This research concludes that teachers are caught between two conflicting sets of criteria: those of their pre-service training and those of the new curriculum, which is currently being mediated to them through brief orientations. Drawing on recent literature, the researcher argues that in order to shift deep-seated literacy practices, teacher training needs to be prolonged, in-depth and ongoing.
- Full Text:
- Authors: Koch, Lynn
- Date: 2004
- Subjects: Textbooks -- South Africa -- Evaluation Curriculum planning -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1780 , http://hdl.handle.net/10962/d1003665
- Description: This study investigates the criteria teachers use when selecting and evaluating learning support material, in particular, English second language textbooks. The study seeks to determine what informs the criteria that teachers use for selection. The study is conducted against the backdrop of Curriculum 2005 (C2005) and outlines the C2005 revision process and the subsequent introduction of the Revised National Curriculum Statement (RNCS). Through a series of focus group interviews, the researcher explores the criteria teachers use for evaluation. Many of the teachers in this study did not have clearly articulated criteria; rather, they drew on implicit criteria and mentioned favoured qualities or attributes that they looked for in a textbook. In addition, the teachers in the focus groups used criteria that had been ‘told’ rather than ‘owned’ and had not developed their own sets of criteria. This research concludes that teachers are caught between two conflicting sets of criteria: those of their pre-service training and those of the new curriculum, which is currently being mediated to them through brief orientations. Drawing on recent literature, the researcher argues that in order to shift deep-seated literacy practices, teacher training needs to be prolonged, in-depth and ongoing.
- Full Text:
A Trypanosoma cruzi heat shock protein 40 is able to stimulate the adenosine triphosphate hydrolysis activity of heat shock protein 70 and can substitute for a yeast heat shock protein 40
- Edkins, Adrienne L, Ludewig, Michael H, Blatch, Gregory L
- Authors: Edkins, Adrienne L , Ludewig, Michael H , Blatch, Gregory L
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:6465 , http://hdl.handle.net/10962/d1005794 , http://dx.doi.org/10.1016/j.biocel.2004.01.016
- Description: The process of assisted protein folding, characteristic of members of the heat shock protein 70 (Hsp70) and heat shock protein 40 (Hsp40) molecular chaperone families, is important for maintaining the structural integrity of cellular protein machinery under normal and stressful conditions. Hsp70 and Hsp40 cooperate to bind non-native protein conformations in a process of adenosine triphosphate (ATP)-regulated assisted protein folding. We have analysed the molecular chaperone activity of the cytoplasmic inducible Hsp70 from Trypanosoma cruzi (TcHsp70) and its interactions with its potential partner Hsp40s (T. cruzi DnaJ protein 1 [Tcj1] and T. cruzi DnaJ protein 2 [Tcj2]). Histidine-tagged TcHsp70 (His-TcHsp70), Tcj1 (Tcj1-His) and Tcj2 (His-Tcj2) were over-produced in Escherichia coli and purified by nickel affinity chromatography. The in vitro basal specific ATP hydrolysis activity (ATPase activity) of His-TcHsp70 was determined as 40 nmol phosphate/min/mg protein, significantly higher than that reported for other Hsp70s. The basal specific ATPase activity was stimulated to a maximal level of 60 nmol phosphate/min/mg protein in the presence of His-Tcj2 and a model substrate, reduced carboxymethylated α-lactalbumin. In vivo complementation assays showed that Tcj2 was able to overcome the temperature sensitivity of the ydj1 mutant Saccharomyces cerevisiae strain JJ160, suggesting that Tcj2 may be functionally equivalent to the yeast Hsp40 homologue (yeast DnaJ protein 1, Ydj1). These data suggest that Tcj2 is involved in cytoprotection in a similar fashion to Ydj1, and that TcHsp70 and Tcj2 may interact in a nucleotide-regulated process of chaperone-assisted protein folding.
- Full Text:
- Authors: Edkins, Adrienne L , Ludewig, Michael H , Blatch, Gregory L
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:6465 , http://hdl.handle.net/10962/d1005794 , http://dx.doi.org/10.1016/j.biocel.2004.01.016
- Description: The process of assisted protein folding, characteristic of members of the heat shock protein 70 (Hsp70) and heat shock protein 40 (Hsp40) molecular chaperone families, is important for maintaining the structural integrity of cellular protein machinery under normal and stressful conditions. Hsp70 and Hsp40 cooperate to bind non-native protein conformations in a process of adenosine triphosphate (ATP)-regulated assisted protein folding. We have analysed the molecular chaperone activity of the cytoplasmic inducible Hsp70 from Trypanosoma cruzi (TcHsp70) and its interactions with its potential partner Hsp40s (T. cruzi DnaJ protein 1 [Tcj1] and T. cruzi DnaJ protein 2 [Tcj2]). Histidine-tagged TcHsp70 (His-TcHsp70), Tcj1 (Tcj1-His) and Tcj2 (His-Tcj2) were over-produced in Escherichia coli and purified by nickel affinity chromatography. The in vitro basal specific ATP hydrolysis activity (ATPase activity) of His-TcHsp70 was determined as 40 nmol phosphate/min/mg protein, significantly higher than that reported for other Hsp70s. The basal specific ATPase activity was stimulated to a maximal level of 60 nmol phosphate/min/mg protein in the presence of His-Tcj2 and a model substrate, reduced carboxymethylated α-lactalbumin. In vivo complementation assays showed that Tcj2 was able to overcome the temperature sensitivity of the ydj1 mutant Saccharomyces cerevisiae strain JJ160, suggesting that Tcj2 may be functionally equivalent to the yeast Hsp40 homologue (yeast DnaJ protein 1, Ydj1). These data suggest that Tcj2 is involved in cytoprotection in a similar fashion to Ydj1, and that TcHsp70 and Tcj2 may interact in a nucleotide-regulated process of chaperone-assisted protein folding.
- Full Text:
A Unified Architecture For Automatic Software Updates
- White, Dominic, Irwin, Barry V W
- Authors: White, Dominic , Irwin, Barry V W
- Date: 2004
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428800 , vital:72537 , https://citeseerx.ist.psu.edu/document?repid=rep1type=pdfdoi=6e1cd9269a0c5532faf7a23f82995fcfa39e59bd
- Description: This paper attempts to address the issue of hardening the internal secu-rity of an organisation’s network by easing its patch management. Tradi-tionally security has been modeled on a" hard outer shell" approach, with a firewall protecting the otherwise vulnerable internal network. With the advent of worms using such techniques as social engineering to by-pass the organisational firewall and installing trojans, this approach is no longer sufficient. As a result of these new attacks, emphasis should be placed on improving the security of the internal network. Most research agrees that prompt patching of security vulnerabilities would significantly reduce the vulnerability of these machines. However, this requires sys-tem administrators not only to keep abreast of the flood of patches, but to ensure they are deployed to every machine, in what could be a very large network. These difficulties are worsened by problems the patches themselves often create. This is a difficult task and the failure of system administrators to perform it is echoed in the recent spate of worm at-tacks, with some taking advantage of vulnerabilities for which patches had been released up to six months earlier.
- Full Text:
- Authors: White, Dominic , Irwin, Barry V W
- Date: 2004
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428800 , vital:72537 , https://citeseerx.ist.psu.edu/document?repid=rep1type=pdfdoi=6e1cd9269a0c5532faf7a23f82995fcfa39e59bd
- Description: This paper attempts to address the issue of hardening the internal secu-rity of an organisation’s network by easing its patch management. Tradi-tionally security has been modeled on a" hard outer shell" approach, with a firewall protecting the otherwise vulnerable internal network. With the advent of worms using such techniques as social engineering to by-pass the organisational firewall and installing trojans, this approach is no longer sufficient. As a result of these new attacks, emphasis should be placed on improving the security of the internal network. Most research agrees that prompt patching of security vulnerabilities would significantly reduce the vulnerability of these machines. However, this requires sys-tem administrators not only to keep abreast of the flood of patches, but to ensure they are deployed to every machine, in what could be a very large network. These difficulties are worsened by problems the patches themselves often create. This is a difficult task and the failure of system administrators to perform it is echoed in the recent spate of worm at-tacks, with some taking advantage of vulnerabilities for which patches had been released up to six months earlier.
- Full Text:
A unified patch management architecture
- White, Dominic, Irwin, Barry V W
- Authors: White, Dominic , Irwin, Barry V W
- Date: 2004
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428312 , vital:72502 , https://d1wqtxts1xzle7.cloudfront.net/49200003/A_Unified_Patch_Management_Architecture20160928-23008-tl6zi6-libre.pdf?1475130102=andresponse-content-disposi-tion=inline;+filename=A_Unified_Patch_Management_Architecture.pdfandExpires=1714792674andSignature=JMVkFUbxZO5SzFTdhoeVBJk99hD~p5HQhSlLP0sgvU6p6hRRILz8dWwB9M1OPLXDnqYG3RLWyomwNweZtQpFuFwMgyx-EV~7TA0wkCAfzQr0N9YoOjbwcbHA5Fse1c3zFw7rtpwUYoEPyO17TWplLI7IkVArlotnG~3AWf1AKVmhWQ2gvfXAEi361XRwOFlC1d2XLiKQhVTafh7OrAuGt7EDUKuczw1K4u7YZxi5I7ty~704aTvILlKoVkBpVnYC1U3sVmj8BixFhY84MYD~YvM6ym3bVkitE1iDrpFjH40nR8QF5jpkOurB~aikFgNmB1WNXo8kHbyRAjciZQOYhOg__andKey-Pair-Id=APKAJLOHF5GGSLRBV4ZA
- Description: This paper attempts to address the issue of harden-ing the internal security of an organisation’s network by easing its patch management. A unified architecture to aid with this process is proposed, with the view towards the implementation of an open source, cross platform tool to solve this problem.
- Full Text:
- Authors: White, Dominic , Irwin, Barry V W
- Date: 2004
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428312 , vital:72502 , https://d1wqtxts1xzle7.cloudfront.net/49200003/A_Unified_Patch_Management_Architecture20160928-23008-tl6zi6-libre.pdf?1475130102=andresponse-content-disposi-tion=inline;+filename=A_Unified_Patch_Management_Architecture.pdfandExpires=1714792674andSignature=JMVkFUbxZO5SzFTdhoeVBJk99hD~p5HQhSlLP0sgvU6p6hRRILz8dWwB9M1OPLXDnqYG3RLWyomwNweZtQpFuFwMgyx-EV~7TA0wkCAfzQr0N9YoOjbwcbHA5Fse1c3zFw7rtpwUYoEPyO17TWplLI7IkVArlotnG~3AWf1AKVmhWQ2gvfXAEi361XRwOFlC1d2XLiKQhVTafh7OrAuGt7EDUKuczw1K4u7YZxi5I7ty~704aTvILlKoVkBpVnYC1U3sVmj8BixFhY84MYD~YvM6ym3bVkitE1iDrpFjH40nR8QF5jpkOurB~aikFgNmB1WNXo8kHbyRAjciZQOYhOg__andKey-Pair-Id=APKAJLOHF5GGSLRBV4ZA
- Description: This paper attempts to address the issue of harden-ing the internal security of an organisation’s network by easing its patch management. A unified architecture to aid with this process is proposed, with the view towards the implementation of an open source, cross platform tool to solve this problem.
- Full Text:
A yellowwood by any other name: molecular systematics and the taxonomy of Podocarpus and the Podocarpaceae in southern Africa
- Barker, Nigel P, Muller, E M, Mill, R R
- Authors: Barker, Nigel P , Muller, E M , Mill, R R
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:6495 , http://hdl.handle.net/10962/d1004488
- Description: We briefly review the taxonomic history of the Podocarpaceae, with an emphasis on the recognition of numerous segregate genera out of Podocarpus sensu lato. Despite some controversy over the recognition of these genera, molecular data (DNA sequences) provide evidence that supports this taxonomy. The implications for African Podocarpaceae are discussed. In particular, molecular data support the recognition of Afrocarpus as distinct from Podocarpus. Additional taxonomic problems concerning the possible segregation of Podocarpus milanjianus from P. latifolius are addressed using DNA sequence data from the nuclear internal transcribed spacer 2 (ITS2) region. Results of this are inconclusive, and suggest that alternative DNA-based evidence, such as from AFLPs or microsatellites, may be more informative in resolving such species complexes in African Podocarpus.
- Full Text:
- Authors: Barker, Nigel P , Muller, E M , Mill, R R
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:6495 , http://hdl.handle.net/10962/d1004488
- Description: We briefly review the taxonomic history of the Podocarpaceae, with an emphasis on the recognition of numerous segregate genera out of Podocarpus sensu lato. Despite some controversy over the recognition of these genera, molecular data (DNA sequences) provide evidence that supports this taxonomy. The implications for African Podocarpaceae are discussed. In particular, molecular data support the recognition of Afrocarpus as distinct from Podocarpus. Additional taxonomic problems concerning the possible segregation of Podocarpus milanjianus from P. latifolius are addressed using DNA sequence data from the nuclear internal transcribed spacer 2 (ITS2) region. Results of this are inconclusive, and suggest that alternative DNA-based evidence, such as from AFLPs or microsatellites, may be more informative in resolving such species complexes in African Podocarpus.
- Full Text:
Abortion: social implications for nurses conducting termination of pregnancies in East London
- Authors: Naicker, Sumithrie Sasha
- Date: 2004
- Subjects: Abortion -- South Africa -- Eastern Cape , Abortion -- Moral and ethical aspects -- South Africa -- Eastern Cape , Nurses -- Job stress -- South Africa -- Eastern Cape , Liberty of conscience -- South Africa -- Nurses , Emergency contraceptives -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3396 , http://hdl.handle.net/10962/d1018254
- Description: Abortion is a highly controversial subject that has again come into the spotlight in South Africa due to the legalisation of abortion on demand in 1996. The results of various studies conducted since the Choice on Termination of Pregnancy Act 92 of 1996 was implemented, have indicated that abortion providers have met with a great deal of negativism and ostracism. This study focused on the implications of abortion work on nurses' social relationships with family, friends, colleagues and their communities. Recent literature was reviewed on the subject. The researcher however, found little information on this specific aspect of abortion. The study was conducted with abortion nurses from two government designated hospitals in the East London area responsible for abortion services. Thus, results cannot be generalised. This is a qualitative study that aimed at obtaining firsthand information regarding the personal experiences of abortion nurses. A non-probability sampling technique was used viz. criterion sampling. The Interview Guide Approach was used whereby in-depth, semi-structured interviewed were conducted with the guidance of a set of questions in the form of an Interview Schedule. The ten respondents were asked to share their recommendations as to possible measures that could address the challenges mentioned during their interviews. The researcher came to the conclusion that nurses' social relationships and lives are definitely impacted by abortion work. This impact is largely negative as the majority of respondents experience labelling, stigmatization and ostracism from family, friends, and their colleagues. Abortion nurses also experience a lack of social support, ambivalent feelings with regard to abortion, and a range of negative emotions ranging from stress and depression to frustration and anger. A number of repeat abortions are being done and there seems to be a general lack of contraception. The need exists for nurses to go to Value Clarification Workshops and also to get support in terms of compulsory, continuous, counselling. Separate wards should be set up for abortions whilst sex education should be included in school curriculums at both primary and secondary schools. Family planning and facts about the abortion process should also be included in these sex education programmes. Overall. the need exists for family planning initiatives to promote contraception and deter women from using abortion as a means of contraception. As this study reveals, conducting abortions has come at a great cost for the majority of nurses who lack social support and bear the brunt of anti-abortion sentiment expressed by significant others in their lives. The latter being the people who would normally be the one's they would turn to for help, counsel, support and assistance
- Full Text:
- Authors: Naicker, Sumithrie Sasha
- Date: 2004
- Subjects: Abortion -- South Africa -- Eastern Cape , Abortion -- Moral and ethical aspects -- South Africa -- Eastern Cape , Nurses -- Job stress -- South Africa -- Eastern Cape , Liberty of conscience -- South Africa -- Nurses , Emergency contraceptives -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3396 , http://hdl.handle.net/10962/d1018254
- Description: Abortion is a highly controversial subject that has again come into the spotlight in South Africa due to the legalisation of abortion on demand in 1996. The results of various studies conducted since the Choice on Termination of Pregnancy Act 92 of 1996 was implemented, have indicated that abortion providers have met with a great deal of negativism and ostracism. This study focused on the implications of abortion work on nurses' social relationships with family, friends, colleagues and their communities. Recent literature was reviewed on the subject. The researcher however, found little information on this specific aspect of abortion. The study was conducted with abortion nurses from two government designated hospitals in the East London area responsible for abortion services. Thus, results cannot be generalised. This is a qualitative study that aimed at obtaining firsthand information regarding the personal experiences of abortion nurses. A non-probability sampling technique was used viz. criterion sampling. The Interview Guide Approach was used whereby in-depth, semi-structured interviewed were conducted with the guidance of a set of questions in the form of an Interview Schedule. The ten respondents were asked to share their recommendations as to possible measures that could address the challenges mentioned during their interviews. The researcher came to the conclusion that nurses' social relationships and lives are definitely impacted by abortion work. This impact is largely negative as the majority of respondents experience labelling, stigmatization and ostracism from family, friends, and their colleagues. Abortion nurses also experience a lack of social support, ambivalent feelings with regard to abortion, and a range of negative emotions ranging from stress and depression to frustration and anger. A number of repeat abortions are being done and there seems to be a general lack of contraception. The need exists for nurses to go to Value Clarification Workshops and also to get support in terms of compulsory, continuous, counselling. Separate wards should be set up for abortions whilst sex education should be included in school curriculums at both primary and secondary schools. Family planning and facts about the abortion process should also be included in these sex education programmes. Overall. the need exists for family planning initiatives to promote contraception and deter women from using abortion as a means of contraception. As this study reveals, conducting abortions has come at a great cost for the majority of nurses who lack social support and bear the brunt of anti-abortion sentiment expressed by significant others in their lives. The latter being the people who would normally be the one's they would turn to for help, counsel, support and assistance
- Full Text:
Active anting in captive Cape White-eyes Zosterops pallidus
- Lunt, Nicola, Hulley, Patrick E, Craig, Adrian J F K
- Authors: Lunt, Nicola , Hulley, Patrick E , Craig, Adrian J F K
- Date: 2004
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/465278 , vital:76589 , https://doi.org/10.1111/j.1474-919X.2004.00264.x
- Description: The article focuses on active anting in captive Cape white-eyes Zosterops pallidus. In this study, observation of captive birds at close quarters enables to test some of the stimuli that could elicit this behavior. When anting, birds either brush ants through their plumage or allow ants to crawl over them. Anting has been recorded in more than 160 species of passerine birds worldwide. Nevertheless, it is rarely observed in the wild, perhaps because the actions resemble preening movements or dust-bathing. Experiments were designed to clarify whether white-eyes ant before eating ants, and whether anting is correlated with moult in this species.
- Full Text:
- Authors: Lunt, Nicola , Hulley, Patrick E , Craig, Adrian J F K
- Date: 2004
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/465278 , vital:76589 , https://doi.org/10.1111/j.1474-919X.2004.00264.x
- Description: The article focuses on active anting in captive Cape white-eyes Zosterops pallidus. In this study, observation of captive birds at close quarters enables to test some of the stimuli that could elicit this behavior. When anting, birds either brush ants through their plumage or allow ants to crawl over them. Anting has been recorded in more than 160 species of passerine birds worldwide. Nevertheless, it is rarely observed in the wild, perhaps because the actions resemble preening movements or dust-bathing. Experiments were designed to clarify whether white-eyes ant before eating ants, and whether anting is correlated with moult in this species.
- Full Text:
Additional morphological characteristics of Olive Thrushes and Karoo Thrushes
- Bonnevie, Bo T, Craig, Adrian J F K, Hulley, Patrick E
- Authors: Bonnevie, Bo T , Craig, Adrian J F K , Hulley, Patrick E
- Date: 2004
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/447712 , vital:74669 , https://www.tandfonline.com/doi/pdf/10.2989/00306520409485415
- Description: A southern race of the Olive Thrush, Turdus olivaceus smithi Bonaparte, has recently been proposed as a full species, the Karoo Thrush Turdus smithi (Bowie et al. 2003). Some of the published information on the Olive Thrush Turdus olivaceus olivaceus thus pertains to the Karoo Thrush (eg Kopij 2000), whereas other information deals specifically with the Olive Thrush (eg Winterbottom 1966, Bonnevie et al. 2003). We have ringed, recaptured and recovered both Olive and Karoo Thrushes in the Eastern Cape since 1986, and the two taxa are markedly different in this region. We describe some differences in appearance of the two populations from these data, and compare mass and wing length of living birds, as well as culmen and tarsus lengths of museum specimens from the East London Museum, South Africa. The collection sites of the museum specimens were mapped using ArcView 3.1 (ESRI 1996) together with the ringing sites (Figure 1). Areas of potential sympatry are Oudtshoorn (33 25’S, 22 11’E) and Patensie (33 45’S, 24 48’E).
- Full Text:
- Authors: Bonnevie, Bo T , Craig, Adrian J F K , Hulley, Patrick E
- Date: 2004
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/447712 , vital:74669 , https://www.tandfonline.com/doi/pdf/10.2989/00306520409485415
- Description: A southern race of the Olive Thrush, Turdus olivaceus smithi Bonaparte, has recently been proposed as a full species, the Karoo Thrush Turdus smithi (Bowie et al. 2003). Some of the published information on the Olive Thrush Turdus olivaceus olivaceus thus pertains to the Karoo Thrush (eg Kopij 2000), whereas other information deals specifically with the Olive Thrush (eg Winterbottom 1966, Bonnevie et al. 2003). We have ringed, recaptured and recovered both Olive and Karoo Thrushes in the Eastern Cape since 1986, and the two taxa are markedly different in this region. We describe some differences in appearance of the two populations from these data, and compare mass and wing length of living birds, as well as culmen and tarsus lengths of museum specimens from the East London Museum, South Africa. The collection sites of the museum specimens were mapped using ArcView 3.1 (ESRI 1996) together with the ringing sites (Figure 1). Areas of potential sympatry are Oudtshoorn (33 25’S, 22 11’E) and Patensie (33 45’S, 24 48’E).
- Full Text:
Age, growth and yield-per-recruit analysis of ndunduma Diplotaxodon limnothrissa (Teleostei: Cichlidae), in the southeastern arm of Lake Malawi
- Authors: Kanyerere, Geoffrey Zantute
- Date: 2004
- Subjects: Fishes -- Nyasa, Lake , Cichlids -- Nyasa, Lake , Fishes -- Growth -- Nyasa, Lake , Fishes -- Age -- Nyasa, Lake , Fishery resources -- Malawi , Fishery management -- Malawi
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5214 , http://hdl.handle.net/10962/d1005057 , Fishes -- Nyasa, Lake , Cichlids -- Nyasa, Lake , Fishes -- Growth -- Nyasa, Lake , Fishes -- Age -- Nyasa, Lake , Fishery resources -- Malawi , Fishery management -- Malawi
- Description: Diplotaxodon limnothrissa Turner (1995) is a widely distributed species occurring throughout Lake Malawi, extending from the surface to a depth of at least 220m. It is probably the most abundant cichlid in the lake with biomass estimates of around 87 000 tonnes in the pelagic zone alone. The species is exploited commercially in the southern part of the lake but since its inception the fishery has never been assessed. As such this study investigates some aspects of age and growth of the species besides applying a yield-per-recruit analysis to assess the status of the fishery. Analysis of sectioned sagittal otoliths revealed that D. limnothrissa is fast growing and relatively long-lived species, attaining ages in excess of 10 years. Growth in length was rapid in immature fish, with fish attaining almost half of their maximum size within their first year. Le ngth-at-age was described by the von Bertalanffy growth model with combined-sex growth described as Lt = 211.21(1-exp(- 0.24(t+1.36))) mm TL. Total, natural and fishing mortalities were estimated at 0.76 yr⁻¹, 0.31 yr⁻¹ and 0.45 yr⁻¹ respectively. Per-recruit analysis indicated that the D. limnothrissa stock in the southeast arm of the lake is fully exploited as indicated by the current spawner biomass-per-recruit ratios of 31-55% (SB/R)F=0. Modelling indicated that the current age-at-capture (2.67 years) is lower than the age at which yield is optimised (> 5 years) based on the F₀·₁ harvesting strategy. It is, therefore, recommended that the age-at-capture should be increased from 2.67 to 5 years to optimise yield.
- Full Text:
- Authors: Kanyerere, Geoffrey Zantute
- Date: 2004
- Subjects: Fishes -- Nyasa, Lake , Cichlids -- Nyasa, Lake , Fishes -- Growth -- Nyasa, Lake , Fishes -- Age -- Nyasa, Lake , Fishery resources -- Malawi , Fishery management -- Malawi
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5214 , http://hdl.handle.net/10962/d1005057 , Fishes -- Nyasa, Lake , Cichlids -- Nyasa, Lake , Fishes -- Growth -- Nyasa, Lake , Fishes -- Age -- Nyasa, Lake , Fishery resources -- Malawi , Fishery management -- Malawi
- Description: Diplotaxodon limnothrissa Turner (1995) is a widely distributed species occurring throughout Lake Malawi, extending from the surface to a depth of at least 220m. It is probably the most abundant cichlid in the lake with biomass estimates of around 87 000 tonnes in the pelagic zone alone. The species is exploited commercially in the southern part of the lake but since its inception the fishery has never been assessed. As such this study investigates some aspects of age and growth of the species besides applying a yield-per-recruit analysis to assess the status of the fishery. Analysis of sectioned sagittal otoliths revealed that D. limnothrissa is fast growing and relatively long-lived species, attaining ages in excess of 10 years. Growth in length was rapid in immature fish, with fish attaining almost half of their maximum size within their first year. Le ngth-at-age was described by the von Bertalanffy growth model with combined-sex growth described as Lt = 211.21(1-exp(- 0.24(t+1.36))) mm TL. Total, natural and fishing mortalities were estimated at 0.76 yr⁻¹, 0.31 yr⁻¹ and 0.45 yr⁻¹ respectively. Per-recruit analysis indicated that the D. limnothrissa stock in the southeast arm of the lake is fully exploited as indicated by the current spawner biomass-per-recruit ratios of 31-55% (SB/R)F=0. Modelling indicated that the current age-at-capture (2.67 years) is lower than the age at which yield is optimised (> 5 years) based on the F₀·₁ harvesting strategy. It is, therefore, recommended that the age-at-capture should be increased from 2.67 to 5 years to optimise yield.
- Full Text:
An analysis of automatically scaled F1 layer data over Grahamstown, South Africa
- Jacobs, Linda, Poole, Allon W V, McKinnell, Lee-Anne
- Authors: Jacobs, Linda , Poole, Allon W V , McKinnell, Lee-Anne
- Date: 2004
- Language: English
- Type: text , Article
- Identifier: vital:6808 , http://hdl.handle.net/10962/d1004194
- Description: This paper describes an analysis of automatically scaled F1 layer data over Grahamstown, South Africa (33.3°S, 26.5°E). An application for real time raytracing through the South African ionosphere was identified, and for this application real time evaluation of the electron density profile is essential. Raw real time virtual height data are provided by a Lowell Digisonde (DPS), which employs the automatic scaling software, ARTIST whose output includes the virtual-to-real height data conversion. Experience has shown that there are times when the raytracing performance is degraded because of difficulties surrounding the real time characterisation of the F1 region by ARTIST. The purpose of this investigation is to establish the extent of the problem, the times and conditions under which it occurs, with a view to formulating remedial alternative strategies, such as predictive modelling.
- Full Text:
- Authors: Jacobs, Linda , Poole, Allon W V , McKinnell, Lee-Anne
- Date: 2004
- Language: English
- Type: text , Article
- Identifier: vital:6808 , http://hdl.handle.net/10962/d1004194
- Description: This paper describes an analysis of automatically scaled F1 layer data over Grahamstown, South Africa (33.3°S, 26.5°E). An application for real time raytracing through the South African ionosphere was identified, and for this application real time evaluation of the electron density profile is essential. Raw real time virtual height data are provided by a Lowell Digisonde (DPS), which employs the automatic scaling software, ARTIST whose output includes the virtual-to-real height data conversion. Experience has shown that there are times when the raytracing performance is degraded because of difficulties surrounding the real time characterisation of the F1 region by ARTIST. The purpose of this investigation is to establish the extent of the problem, the times and conditions under which it occurs, with a view to formulating remedial alternative strategies, such as predictive modelling.
- Full Text:
An analysis of the censorship of popular music within the context of cultural struggle in South Africa during the 1980s
- Authors: Drewett, Michael
- Date: 2004
- Subjects: Censorship -- South Africa Popular music -- Censorship -- South Africa Popular music -- Censorship -- South Africa -- History Popular music -- Social aspects -- South Africa Popular music -- Political aspects -- South Africa Popular music -- South Africa -- History and criticism Protest songs -- South Africa -- History and criticism
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3350 , http://hdl.handle.net/10962/d1007098
- Description: The censorship of popular music in South Africa during the 1980s severely affected South African musicians. The apartheid government was directly involved in centralized state censorship by means of the Directorate of Publications, while the South African Broadcasting Corporation exercised government censorship at the level of airplay. Others who assisted state censorship included religious and cultural interest groups. State censorship in turn put pressure on record companies, musicians and others to practice self-censorship. Many musicians who overtly sang about taboo topics or who used controversial language subsequently experienced censorship in different forms, including police harassment. Musicians were also subject to anti-apartheid forms of censorship,such as the United Nations endorsed cultural boycott. Not all instances of censorship were overtly political, but they were always framed by, and took place within, a repressive legal-political system. This thesis found that despite the state's attempt to maintain its hegemony, musicians sought ways of overcoming censorship practices. It is argued that the ensuing struggle cannot be conceived of in simple binary terms. The works of Antonio Gramsci, Michel Foucault and Pierre Bourdieu, in particular, are applied to the South African context in exploring the localized nuances of the cultural struggle over music censorship. It is argued that fragmented resistance to censorship arose out of the very censorship structures that attempted to silence musicians. Textual analysis brought to light that resistance took various forms including songs with provocative lyrics and titles, and more subtle means of bypassing censorship, including the use of symbolism, camouflaged lyrics, satire and crossover performance. Musicians were faced with the challenge of bypassing censors yet nevertheless conveying their message to an audience. The most successful cases negotiated censorial practices while getting an apparent message across to a wide audience. Broader forms of resistance were also explored, including opposition through live performance, counter-hegemonic information on record covers, resistance from exile, alignment with political organizations and legal challenges to state censorship. In addition, some record companies developed strategies of resistance to censorship. The many innovative practices outlined in this thesis demonstrate that even in the context of constraint, resistance is possible. Despite censorship, South African musicians were able to express themselves through approaching their music in an innovative way.
- Full Text:
- Authors: Drewett, Michael
- Date: 2004
- Subjects: Censorship -- South Africa Popular music -- Censorship -- South Africa Popular music -- Censorship -- South Africa -- History Popular music -- Social aspects -- South Africa Popular music -- Political aspects -- South Africa Popular music -- South Africa -- History and criticism Protest songs -- South Africa -- History and criticism
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3350 , http://hdl.handle.net/10962/d1007098
- Description: The censorship of popular music in South Africa during the 1980s severely affected South African musicians. The apartheid government was directly involved in centralized state censorship by means of the Directorate of Publications, while the South African Broadcasting Corporation exercised government censorship at the level of airplay. Others who assisted state censorship included religious and cultural interest groups. State censorship in turn put pressure on record companies, musicians and others to practice self-censorship. Many musicians who overtly sang about taboo topics or who used controversial language subsequently experienced censorship in different forms, including police harassment. Musicians were also subject to anti-apartheid forms of censorship,such as the United Nations endorsed cultural boycott. Not all instances of censorship were overtly political, but they were always framed by, and took place within, a repressive legal-political system. This thesis found that despite the state's attempt to maintain its hegemony, musicians sought ways of overcoming censorship practices. It is argued that the ensuing struggle cannot be conceived of in simple binary terms. The works of Antonio Gramsci, Michel Foucault and Pierre Bourdieu, in particular, are applied to the South African context in exploring the localized nuances of the cultural struggle over music censorship. It is argued that fragmented resistance to censorship arose out of the very censorship structures that attempted to silence musicians. Textual analysis brought to light that resistance took various forms including songs with provocative lyrics and titles, and more subtle means of bypassing censorship, including the use of symbolism, camouflaged lyrics, satire and crossover performance. Musicians were faced with the challenge of bypassing censors yet nevertheless conveying their message to an audience. The most successful cases negotiated censorial practices while getting an apparent message across to a wide audience. Broader forms of resistance were also explored, including opposition through live performance, counter-hegemonic information on record covers, resistance from exile, alignment with political organizations and legal challenges to state censorship. In addition, some record companies developed strategies of resistance to censorship. The many innovative practices outlined in this thesis demonstrate that even in the context of constraint, resistance is possible. Despite censorship, South African musicians were able to express themselves through approaching their music in an innovative way.
- Full Text: