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Recontextualising issues in the 'NISTCOL" environmental education curriculum module for Primary Diploma by Distance Learning in Zambia

  • Authors: Moose, John
  • Date: 2009
  • Subjects: Environmental education -- Zambia
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1722 , http://hdl.handle.net/10962/d1003605
  • Description: This study investigated the recontextualising of the NISTCOL environmental education curriculum module for the Primary Teachers’ Diploma by Distance Learning (PTDDL) in Zambia. It focused on three case sites, the NISTCOL EE curriculum module for PTDDL and the University of Zambia, the National In-Service Teacher’s College (NISTCOL) and four basic schools: chalimbana, Bimbe, Chongwe and Silver Rest. The study looked at teacher professional development in environmental education in Zambia. The aims and goals were to investigate the NISTCOL EE curriculum and identifying issues that were associated with lecturers in the recontextualising process and further examine what issues were associated with curriculum recontextualisation in Zambian schools. For the conceptual constructs, the research drew on Bernstein’s (1990) framework of pedagogic discourse, it traced how the pedagogic discourse was de-located from the field of production and re-located into the pedagogic practice of each stated case above. It further examined the continuities, discontinuities and changes in the official environmental discourse as it was recontextualised. The study particularly focused on Bernstein’s conceptual constructs of selective appropriation and ideological transformation. In each case the Bernstein framework is used to analyze the process to identify recontextualising issues influencing pedagogical practice in the Zambian schools and college. The study revealed that each case under focus was unique but through examining the environmental discourse and pedagogical discourse in each case recontextalising issues were identified. Each case was influenced by different factors, such as lack of policy synergy, lack of EE vision at national level in Zambia, experience and knowledge, ideologies and emphasis, and depth of engagement. These factors provided me with a deeper insight into the curriculum recontextualising processes in Zambian schools.
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Redress : debates informing exhibitions and acquisitions in selected South African public art galleries (1990-1994)

  • Authors: Cook, Shashi Chailey
  • Date: 2009
  • Subjects: South African National Gallery Exhibitions Durban Art Gallery Exhibitions Joahnnesburg Art Gallery Exhibitions Art -- South Africa -- Exhibitions Art, South African Exhibitions South Africa History Exhibitions
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2399 , http://hdl.handle.net/10962/d1002195
  • Description: This thesis centres on the debates informing the progress of three public art galleries in South Africa between 1990 and 1994. This was a period of great change in the country, spanning from the unbanning of left-wing political parties and Nelson Mandela’s release from prison, to the first democratic elections which resulted in his inauguration as President of South Africa. The study focuses specifically on the Johannesburg Art Gallery, the South African National Gallery, and the Durban Art Gallery, delineating the events and exhibitions held, the programmes initiated, and the artists represented by these galleries during this post-apartheid/pre-democracy phase of the country’s history. The debates relevant to these galleries linked to those prevalent in the arts, museology, and politics at the time. Many contemporary South African artists called attention to apartheid oppression and human rights abuses during the 1980s. After 1990, with these pressures alleviating, there was a stage of uncertainty as to the role, responsibility, and focus of visual art in a post-‘struggle’ context, however there was also an unprecedented upswing in interest and investment in it. On a practical level, the administration of the arts was being re-evaluated and contested by both independent and politically-aligned arts groups. Public art museums and sponsored art competitions and exhibitions made increasing efforts to be ‘representative’ of South Africans of all races, cultures, creeds, sexes and genders. The many conferences, committees, and conventions created during this transitional era focused on the creation of policies that would assist in nation-building; historical and cultural redress and regeneration; and the education and representation of previously disadvantaged groups. This coincided with a revolution in museological discourses internationally, from the theorization of a museum as a place of commemoration and conservation, to a forum for discussion and revision between both academic and non-academic communities. With the sharing of the process of constructing history and knowledge, came the challenging dynamics involved in the representation of identity and history. In all of these groups - the arts, museology, and South African politics - the predominant issue seemed to be a negotiation between the bid to open up control to more parties, and the reluctance of some parties to relinquish control. While the emphasis is on significant changes that were implemented in the transitional period, the study locates the changes at the Johannesburg Art Gallery, the South African National Gallery and the Durban Art Gallery within their historical, geographical, and socio-political context. Various artists working in these locations during this era are also discussed, as the changes in their status, and the progressions in their subject matter, materials, and concerns are interesting to examine more nuanced definitions of the ‘political’, probing the politics of identity, sexuality, gender, race, geography, and belief systems. Some artists also focused specifically on post-apartheid preoccupations with territory, trauma, conflict, memory and freedom. This kind of artwork was assiduously acquired during the early ‘90s by public art galleries, whose exhibitions and collecting focus and policies were undergoing considerable revision and redress. This thesis examines these changes in light of their socio-political contexts, as well as in light of shifting national and international imperatives and conceptions of museums and museum practice.
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Reflections on the sine causa requirements and the condictiones in South African law

  • Authors: Glover, Graham B
  • Date: 2009
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/70668 , vital:29687 , https://hdl.handle.net/10520/EJC54716
  • Description: The condictiones present interesting and difficult challenges of classification for the modern South African jurist. Their casuistic development has made them difficult to work with, and for a long time it was argued that a single general enrichment action should take their place. But the Supreme Court of Appeal in McCarthy Retail Ltd v Shortdistance Carriers CC 2001 3 SA 482 (SCA) chose not to follow this path, and instead preferred the idea that a general enrichment action should be subsidiary to the traditional actions. This has breathed new life into debates on the future of the condictiones. This article first examines the current range of application of the condictiones. It then proceeds to show how the courts in the first decade of the 21st century seem to have eschewed the technicalities inherent in pleading the condictiones, and have preferred rather to resolve cases by applying the general requirements of enrichment liability, in contrast to the injunction in McCarthy. The difficulty with this approach is the lack of substance that is given to the sine causa requirement. The article proceeds to examine the various theories about how we in South Africa should understand and give content to the sine causa requirement. This provides a springboard for considering the possible futures of the condictiones. Broadly, it seems that two options are possible: either to collapse the condictiones into one action to deal with cases of enrichment by transfer; or largely to retain the status quo. The most recent decisions of the Supreme Court of Appeal indicate that the latter, more conservative option is likely to be chosen in the short-term. If this approach is to be adopted, it will require a further review of how each of the constituent condictiones fulfils a particular function. A revisionist view of the condictio indebiti is postulated by way of example.
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Reform in defence of sovereignty: South Africa in the UN Security Council, 2007–2008

  • Authors: Bischoff, Paul, 1954-
  • Date: 2009
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/161431 , vital:40626 , https://0-doi.org.wam.seals.ac.za/10.1177/000203970904400205
  • Description: After 1994, South Africa became the sine qua non of an internationalist state, willing to promote cooperation amongst a plurality of actors, believing common interests to be more important than their differences. This raised the hopes of constitutionalists, and those who believed in the expansion of a liberal democratic peace. South Africa has acted out two seemingly contradictory roles: those of a reformer and those of a conserver. By 2007–2008 she had shifted towards the latter, conservative-reformist position. Thus, South Africa's voting record at the General Assembly expressed her overriding concern to regionalise African issues and minimise the US and the West shaping political events. This brought her foreign policy into sharper relief. But while in some sense successful, it came at a price: a controversy about her surrendering her internationalism and principles on human rights for African unity and traditional sovereignty. But it also marked the arrival of South Africa in the world of international Realpolitik.
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Regulating franchise operations in South Africa : a study of the existing legal framework with suggestions for reform.

  • Authors: Woker, Tanya Ann
  • Date: 2009
  • Subjects: Franchise Association of Southern Africa , Franchises (Retail trade) -- Law and legislation -- South Africa , South Africa. Dept. of Trade and Industry , Common law -- South Africa , Commercial law -- South Africa
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:3721 , http://hdl.handle.net/10962/d1015719
  • Description: This thesis analyses the existing legal framework that applies to franchising in South Africa today. The study begins with an examination of the history and nature of the franchise contract, focusing particularly on the nature of the franchise relationship. This study is undertaken in order to substantiate the argument that franchising is a unique method of doing business. There is a need therefore to recognise that the franchise contract is a special contract in its own right, just like contracts of sale, lease, insurance and suretyship. The study then goes on to examine the problems which are experienced in the sector, as well as the law which must provide solutions to these problems. The research will show that in a modern commercial world the existing legal framework, especially the common law, cannot adequately deal with many of these problems. The complex relationship between franchising and competition law is also explored. A common thread that emerges from franchise disputes is the lack of protection afforded to the interests of franchisees. Franchisees tend to be at the mercy of economically stronger franchisors, hence the belief that there is a need for a stronger regulatory framework. The study then shifts to proposals for reform. In 2000 the Department of Trade and Industry (DTI) established the Franchise Steering Committee in conjunction with the Franchise Association of South Africa (FASA) to review the regulatory environment. This Committee drafted franchise legislation which aimed to bring the regulation of the sector under the control of the DTI. This legislation has not been implemented and the DTI has changed its strategy. Instead of dealing with franchising independently, franchising will fall within the scope of consumer protection legislation. Both the consumer protection legislation and the legislation proposed by the Franchise Steering Committee are thoroughly examined and explained. Shortcomings in the proposals are highlighted and an alternative approach is recommended. It is proposed that franchise-specific legislation should be introduced but that this legislation should establish a system of co-regulation between the government and the franchise sector.
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Repetitive symbolic play as a therapeutic process

  • Authors: Campbell, Megan
  • Date: 2009
  • Subjects: Play therapy Symbolic play Child psychology Developmental psychology
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2944 , http://hdl.handle.net/10962/d1002453
  • Description: Child centred play therapy theory explains that the facilitative environment of the relationship between child and play therapist allows the child the opportunity to confront emotional pain imbedded in lived, relational experiences, and in so doing process and gain mastery over it. However very little research exists into how the child, through his use of repetitive, symbolic play, as a therapeutic process, achieves this resolution. This research project aims to address this gap in research by exploring and describing repetitive symbolic play as a therapeutic process within child centred play therapy that facilitates change in the child‟s sense of self, assisting him towards healthy adjustment. The research project uses a young boys‟ therapeutic process as a case study, employing a qualitative research design that draws from interpretative research. Fourteen repetitive play sequence themes were analysed within the context of the case formulation and follow-up feedback meetings that took place throughout the therapy process. Using a hermeneutic enquiry the researcher illustrates how the child‟s sense of self, dependent on his perceptions of his external environment, became far more congruent, as evident through his behaviour, when his environment, first in play therapy, then at home and at school became more consistent, supportive and nurturing. Within this facilitative environment the researcher then describes how the child used repetitive symbolic play to address and process emotional issues relating to earlier experiences within his external environment. Hermeneutic analysis suggests that the child‟s use of repetitive symbolic play within the facilitative relationship between him and his therapist became a therapeutic process in and of itself that contributed towards self-directed healing, and change within his sense of self, that promoted healthier adjustment within his environment.
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Restoration of degraded subtropical thickets in the Baviaanskloof Megareserve, South Africa: the role of carbon stocks and Portulacaria afra survivorship

  • Authors: Powell, Michael John
  • Date: 2009
  • Subjects: Portulacaria afra -- South Africa -- Eastern Cape , Portulacaceae -- South Africa -- Eastern Cape , Biodiversity conservation -- South Africa -- Eastern Cape , Plant conservation -- South Africa -- Eastern Cape , Shrubs -- South Africa -- Eastern Cape , Succulent plants -- South Africa -- Eastern Cape , Baviaanskloof (South Africa)
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4764 , http://hdl.handle.net/10962/d1007164 , Portulacaria afra -- South Africa -- Eastern Cape , Portulacaceae -- South Africa -- Eastern Cape , Biodiversity conservation -- South Africa -- Eastern Cape , Plant conservation -- South Africa -- Eastern Cape , Shrubs -- South Africa -- Eastern Cape , Succulent plants -- South Africa -- Eastern Cape , Baviaanskloof (South Africa)
  • Description: The semi-arid forms of subtropical thicket in the Eastern and Western Cape have been heavily degraded through unsustainable pastoralism over the last century or more. The degraded areas exhibit a significant loss of above-ground and belowground carbon stocks, and consequently provide an opportunity for restoration through the formal and informal carbon markets. A prerequisite for the attainment of carbon credits is to ensure sound carbon stock baselines prior to effecting restoration. I report on the carbon stocks (including sub-pools) for a number of intact subtropical thicket types, as well as the differentials between the intact and degraded states (including the sub-pools). Total carbon stocks (TCS in t C ha⁻¹) for intact vegetation (to a soil depth 0–25 cm), ranged from 87.73±6.51 to 70.64±17.24. For degraded vegetation (including old lands), TCS (t C ha⁻¹) ranged from 34.05±3.61 to 21.03±2.70. For all vegetation types, the differentials in TCS along the degradation gradient (0–25 cm) are highly significant and strengthen the possibility for carbon credit financing to catalyse the restoration of the degraded semi-arid subtropical thickets. This study has shown a mean loss of 57.23 t C ha⁻¹ in Baviaanskloof spekboom thickets, when measured to a soil depth of 25 cm. Portulacaria afra is a key species within the semi-arid subtropical thickets, being a canopy dominant and a driver of soil nutrient status, but has been largely lost from the degraded landscapes. Degraded semi-arid subtropical thicket vegetation lacks regeneration via seedling recruitment; restoration therefore requires the manual replanting of P. afra using cut truncheons. Survivorship trials were undertaken infield in 2005 to establish restoration protocols for P. afra, with survivorship being recorded in 2006 and 2008. Overall survivorship for all treatments was found to be 43.2±2.8% in 2006, dropping to 35.8±2.7% in 2008. Planting posture (flat or upright) showed the most significant results of all the factors tested in 2006 and 2008. Micro-damming also influenced survivorship in that micro-damming was associated with marginally higher survivorship (47.4 ±2.0% with damming vs. 39.1±1.5% without damming in 2006, and 39.3±1.9% vs. 32.3±1.5% in 2008). Higher planting density only showed a significant positive impact on survivorship in 2008. Neither stem diameter nor clumping significantly affected degree of survival. A key finding in the study has been the non-static nature of P. afra truncheon survivorship, even after being well established (three years since planting). The results from the study will guide the restoration protocols for the restoration of degraded subtropical thickets, where P. afra requires replanting.
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Restructuring of the Port Elizabeth Hospital Complex: a perspective from the planned change management approach

  • Authors: Qwesha, Babalwa
  • Date: 2009
  • Subjects: Hospitals -- Administration -- South Africa -- Port Elizabeth Organizational change -- Management -- South Africa Case studies
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:762 , http://hdl.handle.net/10962/d1003883
  • Description: The research objectives which underpin this study were threefold. Firstly was to analyze the Port Elizabeth Hospital Complex (PEHC) restructuring process from a planned changed management perspective in particular the three stage model of Lewin (1951) which include unfreezing the current equilibrium, moving to a new position and refreezing in the new position. Secondly was to analyze how unforeseen circumstances were dealt with. Thirdly was to analyse the setting of objectives and measurements of targets to monitor progress. The study is based on the restructuring that took place in the PEHC which was called “Rationalization”. The research indicates that the development and implementation of the rationalization cannot be understood from the perspective of the three stage model of Lewin (1951). The conclusion was based on the manager’s perceptions of their analysis of the restructuring in the light of the theory of the three stage model of Lewin (1951). The study has shown that: · Rationalisation began by gathering information on the shortcomings of the structure of the three hospitals, but did not understand the degree of readiness to change. · The timescales for achieving rationalization were not clearly defined. · It was driven from the top with clear objectives and no timescales. · There was no structure that prepared the employees to go through the process of rationalisation. · There was lack of capacity of middle managers to respond to the workers in an encouraging way. · Rationalisation sub-committees had limited time to meet with employees at the sectional level. · External stakeholder involvement was not mobilized to its full potential. · Rationalisation was not an open process that involved both formal and informal employees. · Budget constraints and staff shortages were not informed by the restructuring needs. · Workers did not feel secure about the current and future work practises. · There was no feeling that the change will be beneficial to their wellbeing and to the organisation’s goals and mission · There was no monitoring and evaluation put in place to track progress. · There was centralisation of even the most basic administrative functions. The study seems to imply that the restructuring in the PEHC bears no resemblance to the Lewin (1951) planned change model and therefore cannot be understood from the perspective of this model. Given the initiative to rationalize, the PEHC management can learn from the model of Lewin (1951) planned change.
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Review of South African research and interventions in the development of a policy strategy on teen-aged pregnancy

  • Authors: Macleod, Catriona I , Tracey, Tiffany
  • Date: 2009
  • Subjects: To be catalogued
  • Language: English
  • Type: text , review
  • Identifier: http://hdl.handle.net/10962/434425 , vital:73058 , ISBN review , https://www.researchgate.net/profile/Catriona-Macleod-3/publication/43108043_Review_of_South_African_Research_and_Interventions_in_the_Development_of_a_Policy_Strategy_on_Teen-Aged_Pregnancy/links/0c960539ff3f3595e6000000/Review-of-South-African-Research-and-Interventions-in-the-Development-of-a-Policy-Strategy-on-Teen-Aged-Pregnancy.pdf
  • Description: In line with international trends, current South African policy and plans identify sexual and reproductive health as a key priority area for health intervention. Both the prevention of unwanted pregnancies amongst teenagers and the provision of support to those who do conceive contribute to the overall aim of enhancing reproductive health. This report represents a first step in the review of youth and adolescent health policy with regards to pregnancy amongst teenagers. It consists of a review of the scientific literature published in the last 10 years supplemented by information gathered in interviews with key informants from a range of key directorates and organisations. Two broad principles frame this report. The first is the adoption of a nuanced and criti cal approach to understanding ‘adolescent pregnancy’ in context. The second is the adoption of a human rights based perspective that underlies much of South Africa’s legislation and policy with respect to youth sexuality and reproduction.
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Reviews: Unsettling Questions: Palestine, Israel, the Holy Land and Zion

Rhodes University 2009 Graduation Ceremonies Address

  • Authors: Badat, Saleem
  • Date: 2009
  • Language: English
  • Type: text
  • Identifier: vital:7585 , http://hdl.handle.net/10962/d1006575
  • Description: From introduction: To be awarded a degree or diploma from Rhodes University entails dedicated endeavour. When you joined us you were told that at Rhodes learning and education is a partnership, a relationship of mutual commitment to the pursuit of knowledge and understanding, to the development of expertise and skills, and to the embrace of appropriate values and attitudes. Your graduation is testimony that you have fulfilled your side of the partnership. You have displayed the necessary commitment and willingness to learn, to acquire knowledge and to develop expertise. Your achievement, the fruits of many months and years of toil, is,ultimately, your own great accomplishment.
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Rhodes University Graduation Ceremony 2009

  • Authors: Rhodes University
  • Date: 2009
  • Language: English
  • Type: text
  • Identifier: vital:8138 , http://hdl.handle.net/10962/d1007250
  • Description: Rhodes University Graduation Ceremonies [at] 1820 Settlers National Monument Thursday, 16 April at 18:00 [and] Friday, 17 April at 10:30; 14:30 & 18:00 [and] Saturday, 18 April at 10:30
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Rhodes University Library Annual Report 2009: Library Director’s Review

  • Authors: Thomas, G M E
  • Date: 2009
  • Language: English
  • Type: text
  • Identifier: http://hdl.handle.net/10962/59941 , vital:27713
  • Description: [From the Introduction] As you read through this annual overview of the work carried out by the staff of the Rhodes University Library Services Division, I am sure you will be impressed by their achievements during a year marked by major building construction and a demanding institutional review of our services and staffing structures.
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Rhodes University Research Report 2009

  • Authors: Rhodes University
  • Date: 2009
  • Language: English
  • Type: Text
  • Identifier: vital:564 , http://hdl.handle.net/10962/d1011966
  • Description: [From Introduction] Rhodes University maintained and improved its track record of research performance in 2009, a very pleasing trend given that it came directly after a large increase of accredited publication outputs in 2008 of 20.3%, and a flattening of the growth curve was expected. The increase in accredited publication units for 2009 of 6.4% (from 330.02 units to 350.99 units) is closer to the growth rate for the sector as a whole. This continued increase in research publications was achieved against the backdrop of substantial financial constraints and changes in the funding programmes of the National Research Foundation, a primary source of funding for researchers at Rhodes, which produced significant discontinuities in funding for several established researchers. Our journal output, (which accounts for 86% of our total accredited publishing output for higher education subsidy purposes) grew by 5.1% from 2008 to 2009 (from 287.82 units to 302.64 units). The previous year’s growth was 11.3% in this category. Coupled with Rhodes’s high volume of accredited journal outputs in relation to its size, a very pleasing quality measure was that 81.6% of Journal outputs (amongst the highest proportions in the sector) appeared in international accredited journals. Our output from accredited conference proceedings, (which in 2009 amounted to 7% of our total accredited publishing output) shrunk by 27.5% (from 33.22 units down to 24.07 units) from 2008 to 2009 – but from a small base where more year-on-year variance can be expected. This category had grown by 202% in the preceding year, so the 2009 reduction cannot be taken to represent a trend. The book outputs (which in 2009 amounted to 7% of our total accredited publishing output) increased by 170% – again from a very small base (from 8.89 units up to 24.28 units), where year-on-year variance is expected. This category had grown by 91% in the previous year, but had seen a negative growth of 83% in the year before that. The 2009 growth in this category is a combination of increased submissions, and an improved acceptance rate. The staff responsible for this process in the Research Office, and the researchers who made the submissions, are to be warmly congratulated. I add my warm thanks and congratulations to all of our researchers, funders, collaborators and partners who contributed to the excellent research results of 2009.
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Rich Representation and Visualisation of Time-Series Data

  • Authors: Kerr, Simon , Foster, Gregory G , Irwin, Barry V W
  • Date: 2009
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/428130 , vital:72488 , https://www.researchgate.net/profile/Barry-Ir-win/publication/265821926_Rich_Representation_and_Visualisation_of_Time-Series_Data/links/5548a1350cf26a7bf4daefb1/Rich-Representation-and-Visualisation-of-Time-Series-Data.pdf
  • Description: Currently the majority of data is visualized using static graphs and ta-bles. However, static graphs still leave much to be desired and provide only a small insight into trends and changes between values. We pro-pose a move away from purely static representations of data towards a more fluid and understandable environment for data representation. This is achieved through the use of an application which animates time based data. Animating time based data allows one to see nuances within a dataset from a more comprehensive perspective. This is espe-cially useful within the time based data rich telecommunications indus-try. The application comprises of two parts-the backend manages raw data which is then passed to the frontend for animation. A play function allows one to play through a time series. Which creates a fluid and dy-namic environment for exploring data. Both the advantages and disad-vantages of this approach are investigated and an application is intro-duced which can be used to animate and explore datasets.
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Rights, duties and remedies under the United Nations Convention on Contracts for the International Sale of Goods: an investigation into the CISG's compatibility with South African law

  • Authors: Oosthuizen, Beverley-Claire
  • Date: 2009
  • Subjects: United Nations Convention on Contracts for the International Sale of Goods (1980) , Sales -- South Africa , Commercial law -- South Africa , South Africa -- Law and legislation
  • Language: English
  • Type: Thesis , Masters , LLM
  • Identifier: vital:3691 , http://hdl.handle.net/10962/d1003206 , United Nations Convention on Contracts for the International Sale of Goods (1980) , Sales -- South Africa , Commercial law -- South Africa , South Africa -- Law and legislation
  • Description: This thesis analyses the compatibility of the United Nations Convention on Contracts for the International Sale of Goods (CISG) with the South African law of sale. An initial examination of the historical development of the CISG reveals its ambitions of becoming the primary source of law governing international contracts of sale. The goal of this research is to determine whether South Africa should ratify the CISG. The CISG has been ratified by most of the leading trading States in the world. In order to gain a better understanding of the advantages and disadvantages of ratification, a comparative study has been undertaken. The stance taken toward the CISG by the United Kingdom and Germany has been examined. The United Kingdom has staunchly avoided ratifying the CISG, despite having agreed thereto a number of years ago. Germany however has taken a different approach and has welcomed the CISG. The experiences of these foreign States serve as a useful guide when assessing the specific challenges that exist in South Africa concerning the adoption of the CISG. The most important aspect of this study is the direct comparison between the legal provisions housed in the CISG and their counterparts under South African law. A careful investigation has been conducted into the rights, duties, and remedies under the CISG. This investigation is followed by an examination of the corresponding rights, duties, and remedies under the South African domestic law of sale. It is evident from these explorations that the rights and duties under the CISG strongly resemble those under South African law. The direct comparison revealed however that certain remedies found in the CISG do not have a counterpart under South African law. Despite this discrepancy, there are no legal principles in the CISG that are completely unknown in South African law. While certain remedies housed in the CISG cannot be found in an identical form under South African law, sufficiently similar legal principles can be found, which frequently lead to the same results as those under the CISG. This study is concluded with a recommendation concerning South Africa’s adoption of the CISG.
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Salinity induced physiological responses in juvenile dusky kob, Argyrosomus japonicus (Sciaenidae)

  • Authors: Bernatzeder, Andrea Katinka
  • Date: 2009
  • Subjects: Osmoregulation , Argyrosomus -- Effects of salt on -- South Africa , Sciaenidae -- Effects of salt on -- South Africa , Argyrosomus -- Physiology , Sciaenidae -- Physiology , Fishes -- Physiology , Biological control systems , Marine ecology -- South Africa , Fishery management -- South Africa , Mariculture -- South Africa
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:5318 , http://hdl.handle.net/10962/d1005163 , Osmoregulation , Argyrosomus -- Effects of salt on -- South Africa , Sciaenidae -- Effects of salt on -- South Africa , Argyrosomus -- Physiology , Sciaenidae -- Physiology , Fishes -- Physiology , Biological control systems , Marine ecology -- South Africa , Fishery management -- South Africa , Mariculture -- South Africa
  • Description: Fisheries management regulations for dusky kob Argyrosomus japonicus, an important commercial and recreational fisheries species, have failed and the stock is considered collapsed. It is important to take an ecosystems approach to management which includes understanding the effect of environmental factors on recruitment, abundance and distribution. The distribution of early juveniles (20-150 mm TL) in the wild appears to be restricted to the upper reaches of estuaries at salinities below 5 psu. Food availability could not explain the distribution of early juveniles. The aim of this study was to investigate the role of salinity on the distribution of early juvenile dusky kob (<150 mm TL) by examining physiological responses of juveniles exposed to a range of salinities under laboratory conditions. The hypothesis was that the physiological functioning of early juveniles would be optimised at the reduced salinities which they naturally occur at. The objectives of this study were to investigate the effect of salinity on: i) plasma osmolality; ii) growth, food conversion ratio and condition factor; and iii) gill histology with emphasis on chloride cell size and number. A preliminary study was undertaken to determine whether the use of 2-phenoxyethanol had an effect on plasma osmolality. Juveniles pithed prior to blood sampling were used as the control. Plasma osmolality was not affected by exposure or duration of exposure (2, 4, 6, 8, 10 min) to 2-phenoxyethanol. The ability of teleosts to regulate plasma osmolality over a wide range of salinities indicates their degree of ‘physiological euryhalinity’. Plasma osmolality of juveniles exposed to 5, 12 and 35 psu was measured every two weeks over a total of six weeks. Although juveniles were able to regulate plasma osmolality over the duration of the experiment, plasma osmolality at 5 and 12 psu was significantly lower than in fish maintained at 35 psu. Growth is used as an indicator of the relative energy used for osmoregulation at different salinities, as the energy used for osmoregulation becomes unavailable for growth. A nineweek growth experiment was conducted on juveniles exposed to 5, 12 and 35 psu. Juveniles grew and survived at all three salinities. However, growth of juveniles at 5 psu was significantly lower than at 12 and 35 psu. Other than a significantly greater weight gain at 35 psu relative to 12 psu, there was no significant difference in specific growth and length gain between juveniles at 12 and 35 psu. Food conversion ratio and condition factor at 12 and 35 psu were not significantly different, but food conversion ratio and condition factor at 5 psu was significantly greater and lower than at 35 psu respectively. In fish, gills are considered the major organ involved in osmoregulation. Within the gills, chloride cells are the predominant site of ion exchange which is driven by the Na⁺, K⁺- ATPase enzyme. Gill samples of juveniles exposed to 5, 12 and 35 psu for six weeks were examined histologically using light microscopy. Chloride cells of juveniles maintained at 5 psu were significantly more abundant than in juveniles at 12 and 35 psu. Chloride cells of juveniles at 5 psu were significantly larger than in juveniles kept at 12 psu, but not significantly different to those of juveniles kept at 35 psu. The ability of the juvenile fish to regulate plasma osmolality indicates that they are 'physiologically euryhaline', but the reduced growth and proliferation of chloride cells at 5 psu suggests that energy expenditure for osmoregulation is increased at hypoosmotic salinities. Salinity induced physiological responses could therefore not explain the natural distribution of early juvenile dusky kob and it is proposed that other environmental factors (e.g. temperature) are also important. It is also hypothesised that the high conductivity of an estuary in South Africa, to which our understanding is limited, may negate the effect of reduced salinity. Although freshwater input into estuaries is an important factor, further investigations to explain the distribution and abundance of early juveniles is required to make management recommendations. Dusky kob is also becoming an increasingly popular aquaculture species in South Africa. In this regard, early juvenile dusky kob can be grown at salinities as low as 12 psu without negatively affecting growth and production.
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School grounds as a place for environmental learning in the life skills learning programme

  • Authors: Mambinja, Sindiswa
  • Date: 2009
  • Subjects: Environmental education -- Study and teaching (Elementary) -- South Africa --Grahamstown Life skills -- Study and teaching (Elementary) -- South Africa Education -- South Africa -- Curricula Education, Elementary -- South Africa School grounds -- South Africa -- Grahamstown Curriculum-based assessment -- South Africa
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1757 , http://hdl.handle.net/10962/d1003642
  • Description: With the intention of improving my own practice, the study investigated how school grounds could be used for environmental learning in the Foundation Phase Life Skill Learning Programme within the Revised National Curriculum Statement. The research was conducted in the Grade One class of Ntaba Maria Primary School situated in Grahamstown East. The study was an action research case study based on interpretive approach to research. It had two cycles comprised of two lesson plans. The first Lesson Plan focused on an audit of the school grounds to identify environmental issues. The second Lesson Plan was informed by the audit, and addressed one of the identified environmental issues. Data was gathered through analysis of curriculum documents, video recordings and photographs of learning interactions, journal entries and learners’ work. The study highlighted that school grounds provided a context for environmental learning within Life Orientation Learning Area especially when integrated with other learning areas. There were cases however, where assessment standards were only partly addressed. The study also revealed that the Life Orientation Learning Area was also limiting for school grounds learning opportunities in some cases. In other cases the study highlighted the open-ended nature of some of its assessment standards. The study also revealed how school grounds related activities offered opportunities and challenges for constructivist, situated and active learning. Opportunities and challenges regarding group work, language use, active engagement with information learning in authentic settings, and action and action competence; emerged as issues from the analysis. Finally, the study shed light on how reflection on learners’ work and assessment of these could help teachers modify activities and do them differently so as to enhance the achievement of skills, knowledge, attitudes and values. The achievement of investigative and problem-solving skills through the two lesson plans was critically evaluated as the processes of values education employed in the lesson implementation.
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SDF-1 and PDGF enhance αvβ5-mediated ERK activation and adhesion-independent growth of human pre-B cell lines:

  • Authors: Acharya, Mridu , Edkins, Adrienne L , Ozanne, B , Cushley, W
  • Date: 2009
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/165044 , vital:41204 , DOI: 10.1038/leu.2009.126
  • Description: CD23 acts through the αvβ5 integrin to promote growth of human pre-B cell lines in an adhesion-independent manner. αvβ5 is expressed on normal B-cell precursors in the bone marrow. Soluble CD23 (sCD23), short CD23-derived peptides containing the arg-lys-cys (RKC) motif recognized by αvβ5 and anti-αvβ5 monoclonal antibodies (MAbs) all sustain growth of pre-B cell lines. The chemokine stromal cell-derived factor-1 (SDF-1) regulates key processes during B-cell development. SDF-1 enhanced the growth-sustaining effect driven by ligation of αvβ5 with anti-αvβ5 MAb 15F-11, sCD23 or CD23-derived RKC-containing peptides. This effect was restricted to B-cell precursors and was specific to SDF-1.
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Secondary school learners' perceptions of the value of integrating ICT into the curriculum: an exploratory study in the Grahamstown circuit

  • Authors: Mbane, Nombeko Precious
  • Date: 2009
  • Subjects: Educational technology -- South Africa Information technology -- South Africa Education, Secondary -- Curricula -- South Africa Computer-assisted instruction -- South Africa Educational innovations Information technology -- Study and teaching (Secondary) -- South Africa
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1762 , http://hdl.handle.net/10962/d1003647
  • Description: According to the Draft White Paper on e-Education (DoE, 2003), the objective of ICTs in education is to build digital and information literacy so that all learners become confident and competent in using technology to contribute to an innovative and developing South African society. International researchers have acknowledged that little is known about learners’ perceptions of their own learning, but that learners are aware of how technology can be used and have the potential to contribute ideas about ICTs can be used to support their learning. To add to this growing body of research, this study sought to establish secondary school learners’ experiences and perceptions of the value of integrating ICT into the curriculum and the extent to which they believe that ICT is meaningfully integrated into the curriculum. Although some of the schools do not have the necessary ICT infrastructure, this did not preclude the learners from having opinions about the potential benefits and drawbacks of ICT. The findings display the learners’ perceptions on ICT use within the curriculum and how this relates to the available infrastructure in schools.
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