The fisheries potential of Marcusenius pongolensis, Oreochromis mossambicus and Schilbe intermedius in Mnjoli dam, Swaziland
- Authors: Khumalo, Nokuthula
- Date: 2006
- Subjects: Mozambique tilapia , Marcusenius pongolensis , Schilbe intermedius , Fishes -- Swaziland , Fisheries -- Swaziland , Tilapia -- Swaziland
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5283 , http://hdl.handle.net/10962/d1005127 , Mozambique tilapia , Marcusenius pongolensis , Schilbe intermedius , Fishes -- Swaziland , Fisheries -- Swaziland , Tilapia -- Swaziland
- Description: This thesis investigates aspects of the diversity, abundance and biology of the fish species inhabiting Mnjoli Dam, an irrigation dam that is located in the rural lowveld region of Swaziland. Specific objectives for this thesis were: to determine the fish species present and select three principal species based on their abundance; to investigate the relative abundance and distribution of the three selected species; and to describe key population parameters, such as growth, maturity, reproductive seasonality and mortality. The three dominant species were selected on their fisheries potential. These were Marcusenius pongolensis, Oreochromis mossambicus and Schilbe intermedius. Marcusenius pongolensis was the most abundant species in terms of both catch per unit effort and mass. Catch rates were shown to vary according to habitat type. Age and growth parameters were obtained from sectioned otoliths. Marginal zone analysis showed that annulus formation occurred in winter for all three species. The maximum-recorded ages were 8, 6 and 8 for M. pongolensis, O. mossambicus and S. intermedius, respectively. Growth for the three species was best described by the three parameter von Bertalanffy growth model as Lt = 1.88.67(1- exp⁻¹·⁴⁸⁽t⁺°·⁶⁷⁾) mm FL for M. pongolensis; Lt = 226.83(1- exp⁻°·⁴⁽t⁺²·°²⁾) mm TL for O. mossambicus and Lt = 214.59(1- exp⁻°·⁶°⁽t⁺¹·²°⁾) mm FL for S. intermedius. Sexual maturity was estimated for male and female M. pongolensis at 134 mm FL and 119 mm FL, respectively. Oreochromis mossambicus matured at 239 mm TL and S. intermedius at 205 mm FL. Two spawning peaks for M. pongolensis and S. intermedius were observed, one at the onset of summer (November) and the second at the beginning of autumn (February-March). Oreochromis mossambicus also exhibited two spawning peaks, one in spring (September) and the second in autumn (February –March). Mean mortality rate (Z), estimated using catch curve analysis was 0.77 year⁻¹ for M. pongolensis, 0.49 year⁻¹ for O. mossambicus and 0.79 year⁻¹ for S. intermedius. Natural mortality was assumed to be equal to Z since there is no fishery activity at the dam. Size specific selectivity curves were developed for each species. Of all the mesh sizes used, the 44 mm mesh size net had the highest catch rates in terms of numbers for M. pongolensis and S. intermedius. The 75mm mesh caught the highest catch rates for O. mossambicus. . The 44mm and 75 mm meshes seem to be the most suitable mesh sizes for harvesting the candidate species. It is concluded that no commercial fishery should be established on the dam, yet a small subsistence fishery could be a possible option. Management options such as input controls, open and closed seasons and areas and minimum sizes are discussed.
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The forensic aesthetic in art
- Authors: Spargo, Natascha
- Date: 2006
- Subjects: Violence in art Psychic trauma -- Pictorial works Aesthetics Human figure in art Smith, Kathryn, 1975-
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2435 , http://hdl.handle.net/10962/d1004624
- Description: From Introduction: The 'forensic aesthetic' presents the viewer with traces and debris - the residue that haunts sites of transgression, violence and death. In his book Scene of the Crime, art critic and curator Ralph Rugoff (1997:62) defines the forensic aesthetic as follows: "Inextricably linked to an unseen history, this type of art embodies a fractured relationship to time. Like a piece of evidence, its present appearance is haunted by an indeterminate past, which we confront in the alienated form of fossilized and fragmented remnants." Through its play on seemingly insignificant detail&, clues and traces, the forensic aesthetic suggests that meaning is dispersed, fragmentary and uncertain. According to Rugoff (1997:17), the forensic aesthetic "aims to engage the viewer in a process of mental reconstruction". It compels the viewer to adopt a 'forensic gaze' : to sift through broken narratives and fragments of information, reading the artwork as one might read a sample of evidence. Rugoff (1997:62) argues that: "[S]uch art insists that 'content is something that can't be seen' ... it requires that the viewer arrive at an interpretation by examining traces and marks and reading them as clues. In addition, it is marked by a strong sense of aftermath. ... Taken as a whole, this art puts us in a position akin to that of [the] forensic anthropologist or scientist, forcing us to speculatively piece together histories that remain largely invisible to the eye." One might argue that some of the earliest known examples of the forensic aesthetic in art presented themselves in the Renaissance period in the form of the pseudo-forensic anatomical drawings of Leonardo da Vinci. In his Studies of the Hand (fig. 1), for example, Da Vinci methodically represents the underlying structures of the human hand in a series of drawings that are scattered intermittently across the page. The remainder of the page is covered with hand-written notations. In this work, the artist approaches the human body with a scientific, almost forensic, gaze. Here the body is presented in fragments, rather than as a whole. According to Rugoff (1997:86&88), the forensic aesthetic addresses the body "not as a coherent whole but as a site of prior actions ... as a dispersed territory of clues and traces". When read in terms of the mode of the forensic aesthetic, Da Vinci's Studies of the Hand may be said to look at the human body as forensic object. In this way, this work may be said to speak of the manner in which the forensic gaze operates in the context of the artwork. Throughout the following essay, I discuss the various ways in which the forensic aesthetic manifests itself in art. I have necessarily been selective in the artworks that I have chosen for discussion, as this topic is very broad indeed. In Chapter One, I explore the tradition of the forensic aesthetic in art by way of a select number of artworks. This chapter focuses on investigating the way in which these works, whether consciously or unconsciously, speak of associations between violence and representation through the mode of the forensic aesthetic. The contents of Chapter Two concentrate on the work of South African artist Kathryn Smith. Smith's work may be said to possess a forensic quality, in that it references forensic practices and techniques. Her work has not been the topic of a lengthy monograph, but it has been considered in various exhibition catalogues, reviews and articles. For example, an essay by Colin Richards entitled 'Dead Certainties' (2004) investigates the forensic quality of Smith's imagery in terms of its play on notions of the trace. Similarly, an article by Maureen de Jager, entitled 'Evidence and Artifice' (2004), examines the manner in which Smith's work transgresses the boundaries between 'forensics and fantasy'. In her book, Through the Looking Glass (2004), Brenda Schmahmann addresses Smith's Still Life series (figs. 9, 10, 11) in relation to the issue of self-representation, exploring the relationship between the 'self' and the body as 'other'. Lastly, a review by James Sey, which was published in Art/South Africa (2004), considers Smith's work in terms of its aesthetic appeal, which serves as a framing device for the uncomfortable subject matter that informs the bulk of her imagery. My reading of Kathryn Smith's work departs from and expands on the available literature in that it focuses on the manner in which her images comment self-critically on the act of representation. I have chosen to focus on Smith's work in particular, as it uses the mode of the forensic aesthetic to speak of the field of artistic practice - a motif that runs throughout my own body of work as well. Moreover, Smith's work, like my own work, may be said to engage with the forensic aesthetic in a South African context. In Chapter Two, I compare a number of Smith's works to the artworks discussed in Chapter One, and examine the manner in which they speak of the links between art and crime. Chapter Three concentrates on outlining the ways in which my own work reads off the conventions of forensic investigation. In this chapter I discuss the manner in which my work, by way of a forensic approach, draws parallels between the medium of photography and the mechanisms of trauma. I focus on works that have been included in my Master's exhibition, Vigil (2005). The following essay is a study in representations of violence in art. In the course of this essay, I contextualize the forensic aesthetic as a mode of representation, as well as address the manner in which the forensic aesthetic seems to allow for, even facilitate, self-conscious reflection on the practices of representation itself.
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The ichthyofauna in a small temporarily open/closed Eastern Cape estuary, South Africa
- Authors: Lukey, James Robert
- Date: 2006
- Subjects: Estuarine fishes -- South Africa -- Eastern Cape , Marine fishes -- South Africa -- Eastern Cape , Estuaries -- South Africa -- Eastern Cape , Estuarine fishes -- Habitat -- South Africa -- Eastern Cape , Fish populations -- South Africa -- Eastern Cape , Fishes -- Growth -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5287 , http://hdl.handle.net/10962/d1005131 , Estuarine fishes -- South Africa -- Eastern Cape , Marine fishes -- South Africa -- Eastern Cape , Estuaries -- South Africa -- Eastern Cape , Estuarine fishes -- Habitat -- South Africa -- Eastern Cape , Fish populations -- South Africa -- Eastern Cape , Fishes -- Growth -- South Africa -- Eastern Cape
- Description: The ichthyofaunal community structure, population dynamics and movement patterns in the small temporarily open/closed (TOCE) Grant’s Valley estuary, situated along the Eastern Cape coastline, were investigated over the period May 2004 to April 2005. Community structure in the littoral zone was assessed, while growth of selected ichthyofaunal species was investigated using the MULTIFAN model. Population size was assessed using mark recapture models and movement within the estuary using the Hilborn (1990) model. Total ichthyofaunal densities and biomass within the littoral zone ranged between 0.31 to 21.45 fish m⁻² and 0.20 to 4.67 g wwt m⁻², with the highest values typically recorded during the summer. Results of the study indicated that the ichthyofaunal community structure within the estuary was closely linked to the mouth phase and the establishment of a link to the marine environment via overtopping events. In the absence of any link to the sea, the ichthyofaunal community was numerically dominated by estuarine resident species, mainly Gilchristella aestuaria and to a lesser extent, by the river goby, Glossogobius callidus which collectively comprised ca. 88% of all fish sampled. The establishment of the link to the marine environment contributed to an increased contribution of marine breeding species (e.g. Rhabdosargus holubi, Myxus capensis and Atherina breviceps) to the total ichthyofaunal abundances. In contrast, total ichthyofaunal biomass was almost always dominated by marine breeding species by virtue of their larger sizes. Results of hierarchical cluster analyses did not identify any spatial patterns in the ichthyofaunal community within the littoral zone. Results of MULTIFAN analysis indicated estuarine resident fish species bred over an extended period with peaks occurring in the summer months. Conversely, marine breeding fish were shown to recruit into the estuary following overtopping and breaching events. Results of the mark-recapture experiment indicated a population of ca. 12 000 (11 219 – 13 311) individuals greater than 50mm SL. Marine-breeding species (R. holubi, Monodactylus falciformis, and two mullet species) numerically dominated the ichthyofauna, possibly as a result of their effective use of overtopping events. The two mullet species, M. capensis and Liza richardsonii, and the Cape stumpnose, R. holubi moved extensively throughout the estuary, while the remaining species exhibited restricted movement patterns possibly due to the preference for refuge and foraging areas associated with reed beds. The observed movement patterns of individual fish species appeared to be associated with both foraging behaviour and habitat selection.
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The impact of inbound logistics activities on the operational performance of the postal services organization in South Africa
- Authors: Tabeni, Mvelo
- Date: 2006
- Subjects: South African Post Office Postal service -- South Africa Business logistics Business logistics -- Cost effectiveness Delivery of goods -- Management Physical distribution of goods Customer services -- Management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:797 , http://hdl.handle.net/10962/d1004577
- Description: Introduction and Relevant Details: This research investigates the impact of inbound logistics' activities on the operational performance of the business within the branches of the South African Post Office (SAPO) in the Eastern Cape Province. The study basically hypothesises a statistically significant positive correlation between inbound logistics' activities and the operational performance of the business with regards to revenue generation and operational costs in particular. A sample of 100 branch offices was randomly selected. A 50-item questionnaire was administered by mail to the branches to collect the data during September 2005, and statistical tests for correlation were conducted on at least five dependent variables; stock procurement costs, effects on revenue, number of stock variation occurrences, order variation occurrences and the stock holding effects. Results of Data Analysis: The results of 88 respondents (88%) showed the existence of the significant positive relationship between the inbound logistics activities and the operational performance of the business at the South African Post Office branches as proposed by the study. The Spearman Rank Correlation tests were above 0.7 for most of the tested variables, showing a strong relationship. The inbound logistics' activities were also found to be positively correlated to revenue generation as well as to the operational expenses of the business. Conclusion and Recommendations: The findings allowed the researcher to conclude also that whatever improvements are made to the inbound logistics will also impact on the operational performance of the business, while failures in the inbound logistics will do so negatively. Business endeavours to maximise revenue and minimise costs are directly affected by the inbound logistics' activities. The branches of the SAPO seemed to be dissatisfied with most of the services rendered by the Supply Distribution Centre (SOC) of the SAPO, and such services have negatively affected the achievement of revenue targets at the branches as well as the operational costs. Holistic approaches to developing positive perceptions in the branches together with improving service activities at the SOC are recommended. Collaborative initiatives between branches and the SOC, reviewing the lead-times and the establishment of proper structures to handle supply chain queries, enhanced by information system technology to provide accurate and up-to-date information to branches and related parties about stock order issues are required . Areas of further research highlighted include the inbound logistics' activities of the SOC and the effectiveness of company policies as a guide to Supply Chain Management (SCM).
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The investigation, development and characterisation of novel zirconium-based tanning agents
- Authors: Guthrie-Strachan, Jeffry James
- Date: 2006
- Subjects: Zirconium Tanning Leather
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4319 , http://hdl.handle.net/10962/d1004977
- Description: Various oxygen- and nitrogen-donor ligands were investigated as potential zirconium masking agents in zirconium tanning. α-Hydroxycarboxylic acid ligands were identified as effective zirconium(IV) chelators in acidic aqueous solution. Glycolic acid, lactic acid, mandelic acid, 4-hydroxymandelic acid, 4-chloromandelic acid and 4-bromomandelic acid complexes were synthesised, isolated and characterised using a range of analytical techniques. Linear Free Energy Relationships were examined to optimise the stability of the zirconium complexes. Hammett [sigma] plots and Yukawa-Tsuno modified σ plots of the mandelate ligand and zirconium complex series indicated that inductive effects dominate within the benzene ring, however, mesomeric effects are significant outside the ring. Zirconium 4-hydroxymandelate complex solutions were identified as the most effective tanning agents and achieved shrinkage temperatures of 80 and 97ºC for hide powder and goatskin, respectively. The zirconium and 4-hydroxymandelic acid interact synergistically to yield leather equivalent to combination tanned leather in one step. Tanning was performed similarly to vegetable tanning processes with a pickle pH of approximately 5 and fixation was achieved upon acidification. Pilot-scale tanning of goatskin produced white tanned leathers and crust leathers which were physically and aesthetically comparable to matched chromium tanned material.
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The poetry of N.H. Brettell : a critical edition
- Authors: Hacksley, Reginald Gregory
- Date: 2006
- Subjects: Brettell, N H -- Criticism and interpretation South African poetry (English) -- History and criticism
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2289 , http://hdl.handle.net/10962/d1008072
- Description: This thesis presents for the first time a critical reading edition of all known poems by N. H. Brettell. It makes no claim to being definitive, nor does it attempt to establish a final text. It represents merely the best thinking of the editor. Brettell printed and circulated his poetry primarily in hand-made illustrated volumes in a process reminiscent of the scribal publication of the seventeenth century. Only 137 of his 206 extant poems were commercially published during his lifetime. In this study all known printed versions of Brettell's poetry whether in privately printed or commercially published form were examined. All variant readings were recorded and are shown. Wherever possible the relationships between texts are also noted. The poems in this edition are ordered in each case according to the version in the latest datable privately produced collection. The commentary and critical introduction were compiled with the general reader in mind. No previous familiarity with southern African fauna and flora is assumed: animals, birds and insects are described and their scientific names supplied. Expressions current in ordinary British or South African English and present in non-specialist dictionaries are not glossed, but archaic and dialectal forms felt to require explication are briefly explained. So too are less familiar South African dialectal expressions which have been assimilated into the South African English lexicon. Intertextual, Christian and mythological references, both African and Western, are annotated in an attempt to make such references accessible to readers who may not share Brettell's cultural background. The intention is to close the changing distance between the text and the audience. An essay discussing the merits, potential and limitations of electronic scholarly editing is included as part of the textual introduction. A CD-Rom containing Brettell's watercolour illustrations in his privately produced collections and audio-clips of him reading his poetry accompanies this thesis.
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The politics in and around governance in the New Partnership for Africa's Development
- Authors: Roussel, Jean Thierry Kevin
- Date: 2006
- Subjects: New Partnership for Africa's Development , Sustainable development -- Africa , Economic development -- Africa , Africa -- Foreign economic relations , Africa -- Economic conditions , Africa -- Politics and government
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2827 , http://hdl.handle.net/10962/d1003037 , New Partnership for Africa's Development , Sustainable development -- Africa , Economic development -- Africa , Africa -- Foreign economic relations , Africa -- Economic conditions , Africa -- Politics and government
- Description: This study examines the prominence of the term governance and its use in multilateral organisations, in particular the New Partnership for African Development. It argues that the term governance is contentious and needs to be reviewed. This is in light of the elevation of governance as a requisite for development, which has come about through the development of NEPAD. This is primarily a study on the position of the state in multilateral regimes and how governance will affect the state and non-state actors. The politics in and around governance are therefore important in any assessment of African development as governance becomes a developmental necessity. The African Rennaisance and African Union have become ‘beacons of hope’ for Africa and these have been discussed here. We can see NEPAD as a historical development that fits into the African Renaissance. This has been a mechanism to ensure state survival and the states that drive NEPAD have played a significant role in providing legitimacy to Africa’s calls for development. This thesis attempts to explain the shift in developmental policy in that NEPAD has seemingly become the first African development strategy that has the support of the West. Through this thesis, we will examine the role that the Post Washington consensus has played in getting this phase of African development started. What becomes significant here is the way in which governance has been accepted as the gauge for support in development. This study therefore aims to offer a means by which to analyse governance in multilateral organisations. As the term is contentious, three paradigms on governance will be provided in order to refine governance in such a way that it can be applied in analysis. This thesis shows that governance can be refined into corporatist, prebendal and conciliar forms. The form of governance that NEPAD will take has implications for the type of reconfiguration of the state brought about by governance.
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The politics of transformation in South Africa: an evaluation of education policies and their implementation with particular reference to the Eastern Cape Province
- Authors: Rembe, Symphorosa Wilibald
- Date: 2006
- Subjects: Educational change -- South Africa -- Eastern Cape Education -- Political aspects -- South Africa -- Eastern Cape Education and state -- South Africa -- Eastern Cape Post-apartheid era -- South Africa South Africa -- Politics and government -- 1994-
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2826 , http://hdl.handle.net/10962/d1003036
- Description: The post-apartheid government of South Africa has committed itself to achieving fundamental transformation of the education system. The government has adopted policies and measures that aimed to bring about the goals of equity and redress, and to enhance democracy and participation of all groups in development and decision making processes at all levels. It is acknowledged that the democratic government has accomplished a lot in education within this short period and has made numerous strides in enhancing equity, redress and social justice; providing high quality education for all the people of South Africa; bringing about democratisation and development; and enhancing effectiveness and efficiency. However, despite these apparent achievements, this study shows that there have been a number of setbacks and contradictions in the policies which have affected the process of bringing about fundamental changes and transformation in the education sector. The setbacks and contradictions resulted from factors which have affected the type of policies developed to transform the education sector. They also affected the formulation and implementation of the policies, thereby limiting the achievements of the goals of transformation agenda in education. Hence, this study examined the politics of transformation and change in the education sector by examining the type of policies that have been put in place; their formulation, implementation and outcome. The main research questions are: • What kind or type of policies have been put in place to transform the education sector? • How and by whom were the policies formulated? • How are these policies being implemented and what have been the outcomes of the process? Transformation and in particular the policy process is beset with continuous debate, contestation and struggle for the success of ideas and interests which are pursued by individual actors, groups and policy networks through the institutions. During these different stages policies are modified, constituted and reconstituted. As a result, they give rise to intended and unintended outcomes which are likely to support or contradict the objectives of those policies. Hence, the process cannot be explained using only one approach or theory. Therefore, this study has been situated in ideas, group and network and institutional approaches or theories to examine the factors that have affected education policies, their formulation and implementation and the overall transformation of education in South Africa. It contends that policy change and variation result from interaction of ideas and interests within patterns of group and policy networks and preset institutions. The study adopts qualitative interpretive methodology in order to question, understand and explain institutions; interests groups and ideas; socio economic and power relations involved in the process. It also appraises the framework for action. In addition to conducting literature review, unstructured interviews were held with officials from provincial and national Departments of Education, members of national and provincial legislatures, principals, teachers, members of school governing bodies, learners, Non-governmental organisations, Community based organisations, Faith based organisations, teachers’ and workers’ unions. Observations were made during meetings of school governing bodies. The study draws reference from the Eastern Cape Province between 1994 and 2002 and looks at the school level (Basic and Further Education levels). Reference is also made to selective policy instruments namely, the South African Schools Act (SASA) (1996), Curriculum 2005 and Norms and Standards for School Funding (1999). Overall, the findings of the study have shown that various factors have led to setbacks and contradictions in the policies that were adopted in education. They have also affected the formulation and implementation of the policies, hence exerting certain limitations on the achievements of the goals of transformation in education. The factors identified in the findings are the outcome of the negotiated settlement and subsequent changes made by the apartheid government in education before the 1994 elections; constraints and unequal participation of different groups in education policy development in various established structures and avenues; drawbacks in the implementation of education policies by decentralised structures and agents at various levels. This was exacerbated by lack of capacity, lack of adequate resources, lack of commitment and will among some of the civil servants coupled with corruption and mismanagement. The legacy of apartheid and the homeland governments, together with existing backlogs added another layer. Consequently, there were challenges in the economic policy which led to inadequate funding for education. The findings of this study show that competing ideas and interests advanced by groups and networks have impact on decision making, policy content and implementation. Therefore, some policies will reflect and maintain the interests of those individual actors, groups and policy networks that exerted most influence. The findings also reveal that institutional norms and rules, inadequate resources, lack of capacity and skilled human resources and economic environment, constrain decision making, policy content and implementation.
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The population structure of two estuarine fish species, atherina breviceps (Pisces: Atherinidae) and gilchristella aestuaria (Pisces: Clupeidae), along the Southern African coastline
- Authors: Norton, Olivia Bridget
- Date: 2006
- Subjects: Estuarine fishes -- South Africa , Estuarine ecology -- South Africa , Clupeidae -- South Africa , Silversides -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5745 , http://hdl.handle.net/10962/d1005431 , Estuarine fishes -- South Africa , Estuarine ecology -- South Africa , Clupeidae -- South Africa , Silversides -- South Africa
- Description: Phylogeographic patterns of coastal organisms with different life histories and breeding strategies may reveal patterns not consistent with the current delineation of the biogeographic provinces around South Africa. The subdivision of the South African coastline into these three main climatological or biogeographic regions: namely the cool temperate west coast, the warm temperate south coast and the subtropical east coast, is based on average seawater temperatures and hydrological conditions. Genealogies of two estuarine fish species Atherina breviceps, a marine breeder, and Gilchristella aestuaria, an estuarine spawner, were reconstructed using mitochondrial DNA (mtDNA) control region sequences. The study comprised two components, an assessment of a small dataset of both fish species to compare their population structure along the South African coastline and a more comprehensive investigation of the phylogeography of G. aestuaria collected from 21 estuaries around the coast. The comparative study of A. breviceps and G. aestuaria indicate different population distribution patterns along the South African coastline. Results of the A. breviceps analysis demonstrate substantial gene flow due to the random mixing of alleles, while the comparative G. aestuaria dataset indicates a more structured population and considerably less gene flow. The G. aestuaria population demonstrates geographic separation into four groups, namely the west coast (Great Berg), Bot (south coast), Seekoei (south coast) and east coast (Bushmans, Kasouga and Cefane). Results from the larger G. aestuaria dataset indicate that the phylogeographic patterns observed during this study do not conform to existing biogeographic boundaries along the southern African coastline. The delineation identified during this study between the warm temperate and subtropical regions is further south than originally perceived and this southward extension can be ascribed to the prevailing hydrology. The life history patterns and ecology of these two estuarine fish species appears key to understanding their population structure. These factors interact with environmental characteristics such as physical oceanography and the distribution of estuaries (along the coastline) to explain the observed distribution patterns and population structure of A. breviceps and G. aestuaria.
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The power of hegemonic theory in Southern Africa: why Lesotho cannot develop an independent foreign policy
- Authors: Mahao, Lehloenya
- Date: 2006
- Subjects: Hegemony -- South Africa , Lesotho -- Politics and government , Lesotho -- Foreign relations -- South Africa , South Africa -- Foreign relations -- Lesotho
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2799 , http://hdl.handle.net/10962/d1003009 , Hegemony -- South Africa , Lesotho -- Politics and government , Lesotho -- Foreign relations -- South Africa , South Africa -- Foreign relations -- Lesotho
- Description: This thesis critiques hegemonic theory – especially the impact of a hegemonic state on the ability of small states to develop an independent foreign policy. The research uses Lesotho as a case study of a subordinate state in relation to the Republic of South Africa (RSA) as a hegemonic state. It draws on the history of Lesotho’s quest for sovereignty and argues that this sovereignty is constantly eroded to the advantage of its hegemonic neighbour. This constrains Lesotho’s ability to develop an independent foreign policy.
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The puzzle of domination in society : seeking solutions in the African context
- Authors: Madonko, Thokozile
- Date: 2006
- Subjects: Rosen, Michael. On voluntary servitude , Fanon, Frantz, 1925-1961 , Fanon, Frantz, 1925-1961 -- Political and social views , Biko, Steve, 1946-1977 , Ideology , Black people -- Race identity , Ideology -- Psychological aspects , Ideology -- Sociological aspects , Power (Social sciences) , Consciousness , Racism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2855 , http://hdl.handle.net/10962/d1007260 , Rosen, Michael. On voluntary servitude , Fanon, Frantz, 1925-1961 , Fanon, Frantz, 1925-1961 -- Political and social views , Biko, Steve, 1946-1977 , Ideology , Black people -- Race identity , Ideology -- Psychological aspects , Ideology -- Sociological aspects , Power (Social sciences) , Consciousness , Racism
- Description: The presence of human destitution, impoverishment and degradation in the midst of plenty has puzzled social thinkers for millennia. One of the oldest and grandest of theories: the theory of ideology attempts to provide an answer to the puzzle of domination in society. Michael Rosen, in his book On Voluntary Servitude (1996), argues that the solution provided by the theory of ideology is problematic. Furthermore, on the basis of his critique, Rosen argues that we should abandon the theory of ideology and consider alternatives to it. Even though many contemporary academics have turned away from the theory of ideology, because they view it as an imprisoning meta-theory, this study explores the possibility of there being a meta-theory that could help us to make sense of the world. Through an examination of Rosen's critique this thesis shows that Rosen is too quick in his dismissal of the theory of ideology because he fails to consider that a revised functionalist theory of ideology can be expanded to account for the mechanism(s) that ensure that, over time, the society in question acquires ideological consciousness to further its welfare. This thesis shows that Rosen is correct in his criticism of the theory of ideology's explanation of domination because the content, history and social effects of ideological consciousness cannot be fully explained in terms of their role in promoting or stabilising relations of domination. In light of Rosen's criticism the thesis shows that if one provides both an explanation of the psychological motivations of individuals and of the nature of the oppressive society in which they find themselves then what I call an integrated theory of ideology can be developed. In order to illustrate the importance of an integrated theory of ideology the study moves away from high-level theoretical abstraction to concrete social analyses, focusing on the work of Frantz Fanon and Steve Biko and their explanations of domination. The reason this study focuses on their work is because in their role as social scientists, Fanon and Biko provided a powerful critique of colonial, post-colonial and neo-colonial society. It will be argued that Fanon and Biko were able to provide a lasting critique of colonial reality because they offered their critique within the framework of such an integrated theory. Consequently, this study argues that, as Fanon and Biko's work illustrate, an integrated theory of ideology qua critical theory ought not to be abandoned because it is crucial for understanding and resisting forms of oppression that exist in the world today.
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The regulation of tax practitioners in South Africa: a proposed model
- Authors: Woodbridge, Taryn
- Date: 2006
- Subjects: Income tax -- Law and legislation -- South Africa , Taxation -- Law and legislation -- South Africa , South African Revenue Service
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:891 , http://hdl.handle.net/10962/d1003128 , Income tax -- Law and legislation -- South Africa , Taxation -- Law and legislation -- South Africa , South African Revenue Service
- Description: Tax practitioners in South Africa have been operating in an unregulated tax industry. This has allowed certain tax practitioners to fail in their duties to their clients, as many do not have to abide by any code of conduct or ethical principles, to the detriment of the public. Other than the provisions in the Income Tax Act, 58 of 1962, there has been no regulation. As a result of losses suffered by taxpayers either through the incompetence, ignorance or negligence of a tax practitioner, as substantiated by case law, and increased costs borne by the South African Revenue Services due to unnecessary queries and tax disputes, the Minister of Finance, Trevor Manuel, introduced the concept of tax industry regulation in his Budget Speech in 2002. This resulted in the introduction of section 67 A into the Income Tax Act, providing for a registration process for tax practitioners. All practising tax practitioners were required to register with the Commissioner for the South African Revenue Services by 30 June 2005. In addition, a discussion paper was issued in 2002 setting out the proposal of the Revenue Services to regulate the tax industry through the formation of an Association of Tax Practitioners. This proposal includes various contentious issues and casts significant doubt on whether the proposed model is the most suitable. The goal of the research was therefore to evaluate the current status of tax advisory services in order to demonstrate the need for regulation and to compare the proposed SARS model with two established regulatory authorities: the Estate Agency Affairs Board and the Australian Tax Agents Board. A conceptual model for regulation was developed in order to test all the models against a simple regulatory framework to determine whether each was aligned to certain best practices proposed in this framework. The research methodology was qualitative in nature, involving the critical interpretation of documentary data and data generated during a public discussion forum of tax practitioners. It was concluded that the SARS proposal is too prescriptive and, at the same time, too broad in its scope. In order to address the key objective, identified as protection of the taxpaying public, a simplified regulation procedure was recommended, which would adhere to the proposed regulatory framework. , KMBT_363
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The relationship between interest rates and inflation in South Africa : revisiting Fisher's hypothesis
- Authors: Mitchell-Innes, Henry Alexander
- Date: 2006
- Subjects: Fisher effect (Economics) , Interest rates -- South Africa , Interest rates -- Effect of inflation -- South Africa , Inflation (Finance) -- South Africa , Monetary policy -- South Africa , Banks and banking, Central -- South Africa , South Africa -- Economic conditions
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:991 , http://hdl.handle.net/10962/d1002726 , Fisher effect (Economics) , Interest rates -- South Africa , Interest rates -- Effect of inflation -- South Africa , Inflation (Finance) -- South Africa , Monetary policy -- South Africa , Banks and banking, Central -- South Africa , South Africa -- Economic conditions
- Description: This thesis investigates the relationship between expected inflation and nominal interest rates in South Africa and the extent to which the Fisher effect hypothesis holds. The hypothesis, proposed by Fisher (1930), that the nominal rate of interest should reflect movements in the expected rate of inflation has been the subject of much empirical research in many industrialised countries. This wealth of literature can be attributed to various factors including the pivotal role that the nominal rate of interest and, perhaps more importantly, the real rate of interest plays in the economy. The validity of the Fisher effect also has important implications for monetary policy and needs to be considered by central banks. Few studies have been conducted in South Africa to validate this important hypothesis. The analysis uses the 3-month bankers’ acceptance rate and the 10-year government bond rate to proxy both short- and long-term interest rates. The existence of a long-run unit proportional relationship between nominal interest rates and expected inflation is tested using Johansen’s cointegration test. The data is analysed for the period April 2000 to July 2005 as the research aims to establish whether the Fisher relationship holds within an inflation targeting monetary policy framework. The short-run Fisher effect is not empirically verified. This is due to the effects of the monetary policy transmission mechanism and implies that short-term nominal interest rates are a good indication of the stance of monetary policy. A long-run cointegrating relationship is established between long-term interest rates and expected inflation. The long-run adjustment is less than unity, which can be attributed to the credibility of the inflation-targeting framework.
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The relationship between the development and use of teaching and learning support materials: the case of "A year of special days" booklet
- Authors: Urenje, Shepherd
- Date: 2006
- Subjects: Southern African Development Community Teaching -- Aids and devices -- South Africa Environmental education -- South Africa -- Case studies Environmental education -- Curricula -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1724 , http://hdl.handle.net/10962/d1003607
- Description: This research is an interpretive case study, which investigated the relationship between the development and use of the teaching and learning support material, “A Year of Special Days”. An in depth investigation was conducted in South Africa and Zimbabwe where developers and users of the booklet were asked to contribute their experiences with the booklet through questionnaires, semi-structured interviews and workshops. Developers contributed on the purpose for which the booklet was produced while the users explained how the booklet was being used in different contexts. The research also tracked the development and use of booklet in the Southern African Development Community (SADC) region through a workshop held at the Environmental Education Association of Southern Africa (EEASA) Conference in Lusaka, Zambia, in May 2005. Some personal interviews and informal encounters with people who have used it in the past and those using it now were also conducted at EEASA. This case study explored the axes of tension between the development and use of the resource material, “A Year of Special Days”, with the view to informing development and use of materials at the SADC Centre. A long-term intention is to use the framework developed, for similar work in the wider SADC region. The research recommended on how the SADC Centre can track the relationship between the materials developed at the Centre and their use in different contexts. The study established that the booklet “A Year of Special Days” was initially developed for informal education by faith communities mainly in the Anglican Church but turned out to be a resource more applicable for formal education mainly in the national school system of South Africa for environmental learning. That the resource material lacked effective monitoring support from the developers for the initial intended users where there was no formal education structure was an important link in materials development. It is important for resource materials developers to facilitate the participatory monitoring and evaluation of resource materials when they are in use. The study also established that SADC resources materials are easily adaptable and that the process of resource materials development offers important networking opportunities, which allow the adaptation and adoption of similar resource materials for local contexts. The booklet was adapted and adopted by at least eight countries in the form of a booklet, a calendar or a poster. This study provides some recommendations that may be used to guide the Southern African Development Community Regional Environmental Education Programme (REEP) to enhance processes in the development and adaptation of teaching and learning support materials by environmental educators in southern Africa.
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The response of an original equipment manufacturer to the Motor Industry Development Programme: a case study
- Authors: Franse, Ricardo
- Date: 2006
- Subjects: Motor Industry Development Programme Automobile industry and trade -- South Africa -- Case studies Automobile industry and trade -- Government policy -- South Africa Foreign trade regulation -- South Africa -- Case studies South Africa -- Commercial policy -- Case studies
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:761 , http://hdl.handle.net/10962/d1003882
- Description: On the 21st September 1995, the government introduced the Motor Industry Development Programme (MIDP), in compliance with the General Agreement on Tariffs and Trade (GATT) and the World Trade Organization (WTO). Deliberate efforts by the South African government were required to promote structural changes to the domestic motor industry by opening up the economy to international competition through a programme of tariff reduction and export promotion. The integration of the South African automotive industry into global markets would have been extremely difficult, if not impossible, without the MIDP and it would thus be safe to conclude that the economic performance of the researched would have been close to impossible if it was not for the MIDP. The MIDP, as an economic policy, has been embraced by the researched company as a "vehicle" to drive corporate goals in terms of value creation for all stakeholders. The research proposition that the MIDP as an economic policy has contributed to the economic performance of the researched company is examined. In this respect, Annual and Management Accounting reports were analyzed to determine the effect the MIDP has had on the researched company over the last ten years. In addition, two semi-structured interviews were also conducted with the Strategic Finance Planning executive and the Financial Controller of the company. The results show that the MIDP has had positive spin-offs for the researched company. The same results should be valid for the other original equipment manufacturers (OEMs) in the local automotive industry that have embraced the MIDP as a vehicle to create economic value added.
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The role of nutrients in the biological control of water lettuce, Pistia stratiotes lamarck (Araceae) by the leaf-feeding weevil, Neohydronomus affinis Hustache (Coleoptera: Curculionidae) with particular reference to eutrophic conditions
- Authors: Moore, Gareth Ryan
- Date: 2006
- Subjects: Water lettuce -- Biological control , Araceae , Beetles , Curculionidae , Weeds -- Biological control , Pests -- Biological control
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5759 , http://hdl.handle.net/10962/d1005447 , Water lettuce -- Biological control , Araceae , Beetles , Curculionidae , Weeds -- Biological control , Pests -- Biological control
- Description: Water lettuce, Pistia stratiotes Lamarck (Araceae) is a South American plant that has the potential to be a very damaging and important aquatic weed in many tropical countries, including South Africa. It has the potential to rapidly multiply vegetatively and completely cover watercourses in a very short space of time outside of its natural range under ideal conditions and without its natural enemies. In such instances, the weed may cause hindrances to water transport and fishing, increasing chances of malaria, as well as affecting the natural ecology of the system. Water lettuce can also set seed, which may lay dormant for long periods, germinating when conditions are favourable. It is therefore very necessary to adopt control methods against the weed where it is a problem. However, water lettuce has also been effectively and completely controlled in many countries by the leaf-feeding weevil, Neohydronomus affinis Hustache. High nutrient levels in the form of nitrates and phosphates have been shown to have largely negative effects on biological control in several studies, with control being incomplete or taking longer than in similar areas with lower nutrient levels. The effectiveness of N. affinis on the biological control of water lettuce was investigated in a laboratory study, growing P. stratiotes plants with and without insects at different nutrient concentrations. In these studies biological control of water lettuce with N. affinis was found to be complete under eutrophic nutrient conditions, although control took longer when higher nutrient levels were tested. A field site study was conducted at a sewage settlement pond in Cape Recife Nature Reserve near Port Elizabeth, South Africa. This highly eutrophic system was used as a field example for the effectiveness of biocontrol of P. stratiotes by N. affinis under eutrophic conditions. The weevils at Cape Recife caused a massive and rapid crash in the percentage coverage of the weed, from 100% in May 2003, to approximately 0.5 % in September 2003. Plant growth parameters were also found to decrease considerably in size correspondingly with this crash from May 2003 until spring 2003. Plant size only again started to increase gradually but steadily through spring 2003 and into summer. In the laboratory studies, the fecundity of weevils was shown to be much higher on plants grown under higher nutrient concentrations than on plants grown in lower nutrient concentrations. The results from the wing-muscle analysis under different nutrient concentrations were not easy to interpret, and there were few differences in wing muscle state between most of the concentrations. From these findings it is suggested that nutrient concentration, particularly high levels of nitrates and phosphates is not a limiting factor in terms of effective biological control of P. stratiotes with N. affinis, but that under high nutrient conditions biological control might take longer.
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The role of salinity as an abiotic driver of ecological condition in a rural agricultural catchment
- Authors: Lerotholi, Sekhonyana
- Date: 2006
- Subjects: Soils, Salts in -- South Africa -- Kat River , Water salinization -- South Africa -- Kat River , Water quality -- South Africa -- Kat River , Salinization -- Control -- South Africa -- Kat River , Agricultural pollution -- South Africa -- Kat River , Aquatic ecology -- South Africa -- Kat River , Salinity -- South Africa -- Kat River
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4852 , http://hdl.handle.net/10962/d1005528 , Soils, Salts in -- South Africa -- Kat River , Water salinization -- South Africa -- Kat River , Water quality -- South Africa -- Kat River , Salinization -- Control -- South Africa -- Kat River , Agricultural pollution -- South Africa -- Kat River , Aquatic ecology -- South Africa -- Kat River , Salinity -- South Africa -- Kat River
- Description: The Kat River is an agricultural catchment that drains salt rich geology. Potential salinity impacts on ecological condition of the river were investigated. Monthly salt concentrations and flow discharges were monitored at ten sites along the Kat River below the Kat Dam. Monthly salt loads were computed to relate salinity to land use and ionic data used to assess the toxicity of major salts using the TIMS model. Concentration duration curves for sodium chloride were derived from flow concentration relationships, representing sodium chloride concentrations to which the aquatic ecosystem had been exposed. The ecological condition was assessed at nineteen sites using SASS5 biotic index over four seasons. Finally, the modelled instream salt concentrations and bioasessments were evaluated in terms of the modelled level of species protection afforded at different salt concentrations. Species Sensitivity Distributions (SSDs) were used for this exercise. There was a general downstream increase in salinity with the minimum concentrations recorded at the Fairbain tributary (84 mg/L) and maximum levels at the sewage outfall in Fort Beaufort (1222 mg/L). There was evidence that citrus irrigation upstream of Fort Beaufort increased salinisation. Sodium chloride, and to a lesser extent magnesium sulphate, were the dominant salts in the Kat River catchment, with the latter being more toxic. However these had little or no impact on the aquatic ecosystem. Flow-derived sodium chloride concentrations showed that both the Balfour and Blinkwater tributaries were in a fair/ poor condition. However with regard to ecological condition, it was demonstrated that the river is generally in a good state except for the Blinkwater River and the lower catchment. Degraded habitat condition at the Blinkwater was responsible for poor ecological condition. Integrating SSD derived classes, sodium chloride classes and ecological condition indicated that sodium chloride is a driver of ecological condition at the sewage treatment works and the subsequent site (only two of nineteen biomonitoring sites).
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The significance of the local trade in natural resource products for livelihoods and poverty alleviation in South Africa
- Authors: Shackleton, Sheona E
- Date: 2006
- Subjects: Poverty -- South Africa Rural poor -- South Africa Natural resources -- South Africa Selling -- Handicraft South Africa -- Commerce
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4776 , http://hdl.handle.net/10962/d1011731
- Description: What role can the commercialisation of natural resource products play in the efforts to reduce poverty and vulnerability and how can this be enhanced? With poverty alleviation at the top of the global development agenda, this is a question posed by many scholars, practitioners, donor agencies and government departments operating at the environment-development interface. However, recent commentary on this issue is mixed and ambiguous, with some observers being quite optimistic regarding the potential of these products, while others hold a counter view. This thesis explores the livelihood contributions and poverty alleviation potential of four products traded locally in the Bushbuckridge municipality, South Africa; namely traditional brooms, reed mats, woodcraft and a beer made from the fruits of Sclerocarya birrea. A common approach, employing both quantitative and qualitative methods, was used to investigate the harvesting, processing and marketing arrangements, sustainability and livelihood contributions of each product. The results illustrate that any inference regarding the potential of the trade to alleviate poverty depends on how poverty is defined and interpreted, and on whether the role of these products is assessed from a holistic livelihood perspective that includes notions of vulnerability, alternatives and choice, diversification and the needs of rural producers themselves. Overall, the products studied were key in enhancing the livelihood security of the poorest members of society, forming an important safety net and assisting in raising household incomes to levels equivalent to the wider population, but generally were unlikely, on their own, to provide a route out of poverty. However, there were notable exceptions, with marked variation evident both within and across products. Incomes often surpassed local wage rates, and a minority of producers were obtaining returns equivalent to or greater than the official minimum wage. Other benefits, such as the opportunity to work from home or to diversify the livelihood portfolio, were also crucial, with the trade representing different livelihood strategies for different households. When viewed within the context of rising unemployment and HIV/AIDS these findings assume greater significance. While the trades were complex and growth limited, livelihood benefits could be improved on a sustainable basis if the sector was given the attention and support it deserves.
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The taxation of black economic empowerment transactions, with specific reference to the financial sector
- Authors: Kamlana, Unathi
- Date: 2006
- Subjects: Black people -- South Africa -- Economic conditions , Business enterprises, Black -- Taxation -- South Africa , Employee empowerment -- South Africa , Income tax -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:896 , http://hdl.handle.net/10962/d1004544 , Black people -- South Africa -- Economic conditions , Business enterprises, Black -- Taxation -- South Africa , Employee empowerment -- South Africa , Income tax -- Law and legislation -- South Africa
- Description: There has been some concern that the pace of expectations being built up regarding the transfer of ownership of the economy into the hands of the previously disadvantaged was not allowing for the due diligence and analysis of the implications of such transactions. Tax legislation relating to the transfer of assets is also not seen to be consistently conducive to this process. The focus of this thesis is taxation and a critical analysis of how the current tax legislation affects most of the transactions which usually form the basis of black economic empowerment. It is argued that tax policy is one of the fundamental instruments available to government to encourage the process of black economic empowerment. It is therefore important to assess whether or not current tax legislation is supportive of the process of black economic empowerment and to suggest ways in which it can be amended to serve this purpose. By means of a literature review and a case study of a Black Economic Empowerment deal in the financial sector, the thesis examines various sections of the Income Tax Act, 58 of 1962, which may have a bearing on black economic empowerment transactions and structures, including corporate restructuring rules, the taxation of trusts, inter-company loans, the use of hybrid financial instruments, the taxation of small business corporations, employee share incentive schemes, connected persons rules and value-shifting arrangements, the general deduction formula and the deductibility of interest incurred on amounts raised to acquire shares. It appears that although some aspects of the current tax legislation lend themselves to assisting black economic empowerment transactions, there are still areas where much improvement is required. , KMBT_363
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The utility of Weingarten's witness positions in the understanding of compassion fatigue in people who care for their own family members with AIDS
- Authors: Bambani, Nomfezeko
- Date: 2006
- Subjects: AIDS (Disease) -- Patients AIDS (Disease) -- Social aspects Home-based family services Community health services HIV-positive persons -- Social aspects Caregivers -- Attitudes Burn out (Psychology) Weingarten, Kathy
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3103 , http://hdl.handle.net/10962/d1004465
- Description: This paper explores the utility of Weingarten's (2003) witness positions in the understanding of compassion fatigue in people who care for their own family members with AIDS. The research is embedded in Weingarten's theory of witnessing and narrative theory and practice. The literature review explores the shift from hospital-based care to community/home-based care which has led to family members assuming the role of caring for their family members with AIDS, an overview of the effects of caring for AIDS patients on caregivers and an overview of Weingarten's (2003) theory of witnessing with special emphasis on the witnessing positions and their consequences. Interviews, based on narrative theory and practice in which Weingarten's theory is rooted, gave access to the participants' experiences, which were then analysed and interpreted through a framework developed from the witnessing theory. This article demonstrates the utility of Weingarten's (2003) theory of witnessing to people who are caregivers to their own family members with AIDS. I argue that witness positions occupied by caregivers during witnessing determine whether the caregivers will experience compassion fatigue. The negative consequences related to compassion fatigue that will be reviewed could probably be prevented through active, intentional, compassionate witnessing.
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