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Rhenium(V)-Imido complexes with potentially multidentate ligands containing the amino group

  • Authors: Booysen, Irvin Noel
  • Date: 2007
  • Subjects: Rhenium , Ligands
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:10385 , http://hdl.handle.net/10948/479 , Rhenium , Ligands
  • Description: The complex trans-[Re(dab)Cl3(PPh3)2] (H2dab=1,2-diaminobenzene) was prepared from the reaction of trans-[ReOCl3(PPh3)2] with H2dab in ethanol. The ligand dab is coordinated to the rhenium(V) centre through a dianionic imido nitrogen only, in a distorted octahedral coordination geometry around the metal ion. The complex trans-[Re(ada)Cl3(PPh3)2] (H2ada=2-aminodiphenylamine) was prepared from the reaction of trans-[ReOCl3(PPh3)2] with H2ada in acetonitrile. The ligand ada is coordinated to the rhenium(V) centre through a dianionic imido nitrogen only, in a distorted octahedral coordination geometry around the metal ion. Surprisingly, the Re-Cl bond length trans to the Re=N bond is shorter than the two equatorial Re-Cl bond lengths. The reaction of equimolar quantities of cis-[ReO2I(PPh3)2] with 5,6-diamino-1,3- dimethyluracil (H2ddd) in acetonitrile led to the formation of [Re(ddd)(Hddd)I(PPh3)2](ReO4). The X-ray crystal structure shows that the ligand ddd is coordinated monodentately through the doubly deprotonated amino nitrogen and is therefore present as an imide. The chelate Hddd is coordinated bidentately via the neutral amino nitrogen, which is coordinated trans to the imido nitrogen, and the singly deprotonated amido nitrogen, trans to the iodide. The reaction of equimolar quantities of [NH4(ReO4)] with H2ddd in methanol under reflux conditions led to the isolation of [C12H12N6O4] as only product. The [ReO4]- ion is therefore instrumental in the formation of [C12H12N6O4], and since the product contains no rhenium in any oxidation state, the conclusion is that [ReO4]- catalyses the oxidative deamination of H2ddd. The X-ray crystal structure consists of two centrosymmetric, tricyclic rings, comprising a central pyrazine ring and two terminal pyrimidine rings. The reaction of a twofold molar excess of H2apb (H2apb=2-(2-aminophenyl)-1Hbenzimidazole) with trans-[ReO2(py)4]Cl in ethanol gave the green product of the formulation [ReO(Hapb)(apb)] in good yield. The rhenium atom lies in a distorted trigonal-bipyramidal environment. The two imidazole N(2) atoms lie in the apical positions trans to each other, with the oxo-oxygen and two amido N(1) atoms in the trigonal plane. The complex has C2-symmetry. The two amino groups are singly deprotonated and provide a negative charge each, so that they are coordinated as amides. The oxo group provides two negative charges. In order to obtain electroneutrality for the rhenium(V) complex, the two coordinated imidazole nitrogens provide one negative charge. The complex salt trans-[Re(mps)Cl(PPh3)2](ReO4) (H3mps=N-(2-amino-3- methylphenyl)salicylideneimine) was prepared by the reaction of trans- [ReOCl3(PPh3)2] with a twofold molar excess of H3mps. The X-ray crystal structure shows that the trianionic ligand mps acts as a tridentate chelate via the doubly deprotonated amino nitrogen (which is present in trans- [Re(mps)Cl(PPh3)2](ReO4) as an imide), the neutral imino nitrogen and the deprotonated phenolic oxygen. The [ReO4]- anion has approximately regular tetrahedral geometry. Two significant hydrogen bonds are formed between two of the perrhenyl oxygens and the water of crystallization. The six-coordinated complex cis-[Re(mps)Cl2(PPh3)2] was prepared by the reaction of trans-[ReOCl3(PPh3)2] with a twofold molar excess of H3mps in benzene. The Xray crystal structure shows that the mps ligand coordinates as a tridentate chelate via the doubly deprotonated 2-amino nitrogen, the neutral imino nitrogen and the phenolate oxygen. The imide and phenolate oxygen coordinate trans to each other in a distorted octahedral geometry around the rhenium(V) centre, with the two chlorides in cis positions.
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  • Date Issued: 2007

Rhodes University 2007 Graduation Ceremonies Address

  • Authors: Badat, Saleem
  • Date: 2007
  • Subjects: Rhodes University
  • Language: English
  • Type: Text
  • Identifier: vital:7628 , http://hdl.handle.net/10962/d1012595
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  • Date Issued: 2007

Rhodes University : into 2007 and beyond

  • Authors: Badat, Saleem
  • Date: 2007
  • Subjects: Rhodes University
  • Language: English
  • Type: text
  • Identifier: vital:7655 , http://hdl.handle.net/10962/d1015783
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  • Date Issued: 2007

Rhodes University EE and Sustainability Unit

  • Authors: Lotz-Sisitka, Heila , Schudel, Ingrid J
  • Date: 2007
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/294423 , vital:57220 , xlink:href="https://doi.org/10.1177/097340820700100127"
  • Description: In the early 1990s, in response to the emphasis laid on environment and development issues by the new South African Constitution, Rhodes University undertook several initiatives such as establishing the first Chair of Environmental Education (EE) in Africa. Another important initiative was the introduction of an open-entry participatory course for environmental educators. Owing to its flexible format and practice-based methodology, the course gained rapid popularity, necessitating the setting up of a Service Centre to help meet the increased demand. The Chair and the Service Centre have been providing a range of short courses in environment and sustainability education to professionals, and are today widely known as the Rhodes University Environmental Education and Sustainability Unit (RUEESU). The Unit offers PhD and Masters level programmes in EE, encourages meaningful research in key thematic areas, and is actively involved in publishing, and policy transformation. It also endeavours to define the role of Universities in enabling sustainability education.
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  • Date Issued: 2007

Rhodes University Graduation Ceremony 2007

  • Authors: Rhodes University
  • Date: 2007
  • Language: English
  • Type: text
  • Identifier: vital:8140 , http://hdl.handle.net/10962/d1007252
  • Description: Rhodes University Graduation Ceremonies 1820 Settlers National Monument Thursday, 12 April 2007 at 18:00 [and] Friday, 13 April 2007 at 10:30; 14:30 & 18:00 [and] Saturday, 14 April 2007 at 10:30
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  • Date Issued: 2007

Rhodes University Orientation Week : Welcome address of the vice-chancellor of Rhodes University, Dr Saleem Badat, 5 February 2007

  • Authors: Badat, Saleem
  • Date: 2007
  • Subjects: Rhodes University
  • Language: English
  • Type: text
  • Identifier: vital:7651 , http://hdl.handle.net/10962/d1015779
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  • Date Issued: 2007

Rhodes University postgraduates orientation welcome, 9 Feb 2007

  • Authors: Badat, Saleem
  • Date: 2007
  • Subjects: Rhodes University
  • Language: English
  • Type: text
  • Identifier: vital:7653 , http://hdl.handle.net/10962/d1015781
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  • Date Issued: 2007

Rhodes University Research Report 2007

  • Authors: Rhodes University
  • Date: 2007
  • Language: English
  • Type: Text
  • Identifier: vital:562 , http://hdl.handle.net/10962/d1011958
  • Description: [From Introduction] For the past 8 years Rhodes University has maintained a research output record (based on publications and Masters and PhD graduates) which has placed it consistently amongst the top three universities in the country on the basis of outputs per capita academic staff member. The past year was no exception. Journal publications were the highest to date (261.9 units) and Masters and PhD graduates (274 units) are amongst the highest achieved, largely due to the record number of PhD graduates (33) in the Science Faculty. In recent years this per capita output has consistently been over 60% higher than the national average. An encouraging aspect of the journal publications in 2007 is the increase in the percentage of articles in subsidy earning journals. While it is appreciated that the most appropriate journals in certain fields of research are not always those that are on the Department of Education’s approved lists, it is financially critical to the University’s research effort and the University as a whole that subsidy earning outputs are maximised. Another positive outcome of the most recent audit of Rhodes’s research outputs (2006; 2007 data will only be available at the end of 2008) is that 89% of the publications in the form of books, chapters and conference proceedings submitted to the Department of Education were approved for subsidy. This is a significantly higher percentage approval than in the past. The award of two highly prestigious NRF/DST Research Chairs to Profs Tebello Nyokong and Christopher McQuaid as part of the first round of the SA Research Chairs Initiative was another major achievement. These Chairs will significantly enhance the research profile and productivity of the University as will the recent award of the highly prestigious Centre of Excellence in Nanotechnology to be headed by Prof Nyokong. Only three such centres of excellence have been established and were officially launched by the Minister of Science and Technology in November 2007. The Centre will be host to researchers from throughout South Africa and will focus on novel technologies for cancer treatment and the development of new biosensors for disease treatment and water contamination. An encouraging statistic recently released by the National Research Foundation indicates that Rhodes has the fourth highest percentage (15.4%) of rated researchers in the country which is an excellent achievement. NRF ratings are awarded to researchers in all disciplines who are regarded as national and international leaders in their fields. Amongst these researchers, three were also recognised by the University and were awarded the Vice-Chancellor’s Research Awards (see highlights section). Postgraduate students have once again been the cornerstone of much of the research activities in all Faculties and have contributed significantly to the research outputs of the University both as co-authors on publications and through the good graduation rates of Masters and PhD candidates. This is particularly evident for example in the Science Faculty, in which Masters and Doctoral students contributed to over 90% of the Faculty and 60% of the University’s outputs. A key factor in the high profile and success of postgraduates at Rhodes is the excellent supervision they receive and all supervisors are to be congratulated for their dedicated approach to what has become an increasingly onerous academic responsibility. They and the Research Office have benefited enormously from the very able support of the Postgraduate Liaison Committee chaired for a second year by Dan Parker. The work of this committee is highly valued. Finally, this will be my last contribution to the annual Rhodes Research Reports as I will be retiring at the end of 2008. I would like to wish my successor with responsibility for Research at Rhodes, the new DVC: R&D Dr Peter Clayton, every success in the future which I am confident will see research at the University going from strength to strength. I would also like to take the opportunity to express my sincere and grateful thanks to all those who have supported me and contributed to the success of Rhodes research in my past 10 years as Dean of Research. This includes two Vice-Chancellors, members of Senior Management, Deans, Heads of Department and staff and postgraduate students in both academic departments and administrative divisions. In particular, a very big thank you to all the staff who have worked in the Research Office and have made such a significant contribution over this past decade. Special mention must be made of my first Assistant, Moira Pogrund, who was instrumental in the establishment and success of the Research Office from its inception in 1998. She gave true meaning to the word efficiency and her outstanding contribution is being continued by the excellent work of her successor, Dr Heather Davies-Coleman. John Gillam has been a tower of strength in the management and administration of postgraduate financial aid and has been an invaluable advisor and confidant to countless postgraduate students over this period.
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  • Date Issued: 2007

Role playing African development : an international comparison

  • Authors: Fox, Roddy C , Assmo, P , Kjellgren, H
  • Date: 2007
  • Language: English
  • Type: Conference paper
  • Identifier: vital:6665 , http://hdl.handle.net/10962/d1006676
  • Description: The African Development Game is a role playing simulation developed to demonstrate the difficulties six African countries face in reaching the Millennium Development Goals. The game has been played in three different countries, South Africa, Sweden and Finland, to examine its utility as a learning tool for students who are unfamiliar both with the Millennium Development Goals and the problems of African development. Analysis of the games played in South Africa and Sweden. is based on a comparison of student reflections supplemented by participant observation and spreadsheet information of economic performances. Marked differences in the types of learning and success in repaying debt were observed between the two groups of students. They all commented, however, on the effectiveness of the role play as a learning tool.
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  • Date Issued: 2007

Roles : "I am as intently observed as the people photograph"

  • Authors: Pelser, Monique Myren
  • Date: 2007
  • Subjects: Hugo, Pieter Portrait photography Self-portraits Photography, Artistic -- Philosophy
  • Language: English
  • Type: Thesis , Masters , MFA
  • Identifier: vital:2457 , http://hdl.handle.net/10962/d1007647
  • Description: With this dissertation I propose an investigation of how the photographic portrait attempts to construct and confirm identity through the representation of types. Drawing from theoretical texts by Roland Barthes and Robert Sobieszek and engaging with my own process of self-portraiture, as a means of troubling the usual power relations involved between the photographer and the sitter, I will demonstrate the dialectical nature of these roles involved in photographic portraiture. Looking at Pieter Hugo's portraits of judges in Botswana permits me to deal with issues of masquerade and how fashions and uniforms mask an individual allowing him/her to perform roles and stereotypes in society. Referring to another set of Hugo's images from his ongoing series Looking Aside, I will explore the paradoxical nature of the portrait through the dialectic of the 'self 'and 'other' subject and object split through an exploration of notions of skin and prosthetic skin and the relationship to the liminal space 'opened' between subject and object, or viewer and image.
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  • Date Issued: 2007

Rural internet connectivity: a development in Dwesa-Cwebe, Eastern Cape, South Africa

  • Authors: Mandioma, Martin
  • Date: 2007
  • Subjects: Internet -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MSc (Computer Science)
  • Identifier: vital:11376 , http://hdl.handle.net/10353/78 , Internet -- South Africa -- Eastern Cape
  • Description: This thesis presents aspects of Internet connectivity in rural South Africa. The work looks at government initiatives being undertaken to connect rural communities to up-to-date information networks. Various projects that seek to connect rural areas of South Africa, as well as other remote areas around the world, are discussed. These projects present many novel ideas that have been successfully used to link rural communities in remote areas with the information age. In particular, wired and wireless access technologies that can be implemented to connect remote communities to the Internet are discussed. A field test utilizing GPRS, VSAT and WiMAX was implemented in Dwesa-Cwebe, Eastern Cape Province, South Africa. VSAT proved to offer better Internet connectivity in terms of throughput and latency. WiMAX was then successfully implemented to relay the signal over the remote area of Dwesa-Cwebe, thus effectively providing Internet connectivity to an area with limited cell phone coverage and no telephone lines.
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  • Date Issued: 2007

SAIAB extension opening : lunch for the Deputy-Minister of Science and Technology

Satellite television use among Zimbabwean professionals : an investigation into audience consumption of SABC Africa's '60 Minutes live in Africa'

  • Authors: Mugoni, Petronella Chipo
  • Date: 2007
  • Subjects: Direct broadcast satellite television -- Zimbabwe Television viewers -- Zimbabwe Television viewers -- Zimbabwe -- Case studies Television broadcasting of news -- Zimbabwe
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:3512 , http://hdl.handle.net/10962/d1007707
  • Description: Within the context of debates surrounding the consumption of global media by local audiences in Third World countries, this study explores the reasons behind satellite television subscription, and consumption of international news among a sample of young professional men and women in contemporary Zimbabwe. The study seeks to uncover how the research participants respond to news broadcast on SABC Africa's '60 minutes live in Africa', a programme which they can only access via satellite television in their country. Working within the frame of audience studies which insists on understanding media consumption and reception in context, this study examines how the respondents, situated within the specific Zimbabwe context, characterised as it is by serious social, economic and political challenges, respond to both regional news and news about their country on '60 minutes live in Africa'. Within the frame of qualitative research the study employs a two-stage sampling procedure and data collection strategy to uncover the factors that underpin international media consumption and reception by professional men and women situated in a country undergoing rapid change. The findings of the study point to the various social and individual factors that underlie media consumption choices as well as to the different socially patterned reasons why local audiences are either attracted to, or reject global media. The study found that SABC Africa's '60 minutes live in Africa' is more popular and better received than Western-broadcast programmes on channels such as BBC, CNN, and Sky News among Zimbabwean professionals. I also uncovered some evidence that cultural proximity and relevance are of supreme importance in determining which media audiences chose to consume and what level of engagement they bring to their reception of global media. These and other findings directly confront media models that privilege beliefs in cultural imperialism and the dominance of Western media and their effects on Third World audiences.
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  • Date Issued: 2007

Satisfied and dissatisfied South Africans: results from the General Household Survey in international comparison

  • Authors: Moller, Valerie
  • Date: 2007
  • Language: English
  • Type: Article
  • Identifier: vital:7112 , http://hdl.handle.net/10962/d1010744
  • Description: Who are the satisfied South Africans 10 years into democracy? How do material factors contribute to their life satisfaction? These are the questions addressed in this paper. Earlier South African research has consistently found a close positive relationship between life satisfaction and material standards of living in the apartheid and post-apartheid era. Recently, a new source of information has become available to shed further light on the association between material and subjective well-being. In 2002, Statistics South Africa, the country’s official source of statistical information, agreed to ask South Africans participating in the General Household Survey whether they were satisfied or dissatisfied with life. The 2002 General Household Survey (n26’000) used a measure developed for the Euromodule that allows for international comparison. The wide-ranging information contained in South Africa’s official household survey offers a unique opportunity to explore what makes for satisfied and dissatisfied South Africans in relation to their material living standards. Results indicate that the improved living standards afforded to many black South Africans under democracy are associated with increases in life satisfaction. Furthermore, habituation does not appear to have diluted the positive relationship between living standards and well-being. However, political factors continue to play an important role in shaping subjective well-being. In conclusion, it is argued that material gains might also have restored the pride and dignity denied to black South Africans in the past.
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  • Date Issued: 2007

Securing media streams in an Asterisk-based environment and evaluating the resulting performance cost

  • Authors: Clayton, Bradley
  • Date: 2007 , 2007-01-08
  • Subjects: Asterisk (Computer file) , Computer networks -- Security measures , Internet telephony -- Security measures
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4647 , http://hdl.handle.net/10962/d1006606 , Asterisk (Computer file) , Computer networks -- Security measures , Internet telephony -- Security measures
  • Description: When adding Confidentiality, Integrity and Availability (CIA) to a multi-user VoIP (Voice over IP) system, performance and quality are at risk. The aim of this study is twofold. Firstly, it describes current methods suitable to secure voice streams within a VoIP system and make them available in an Asterisk-based VoIP environment. (Asterisk is a well established, open-source, TDM/VoIP PBX.) Secondly, this study evaluates the performance cost incurred after implementing each security method within the Asterisk-based system, using a special testbed suite, named DRAPA, which was developed expressly for this study. The three security methods implemented and studied were IPSec (Internet Protocol Security), SRTP (Secure Real-time Transport Protocol), and SIAX2 (Secure Inter-Asterisk eXchange 2 protocol). From the experiments, it was found that bandwidth and CPU usage were significantly affected by the addition of CIA. In ranking the three security methods in terms of these two resources, it was found that SRTP incurs the least bandwidth overhead, followed by SIAX2 and then IPSec. Where CPU utilisation is concerned, it was found that SIAX2 incurs the least overhead, followed by IPSec, and then SRTP.
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  • Date Issued: 2007

Securing softswitches from malicious attacks

  • Authors: Opie, Jake Weyman
  • Date: 2007
  • Subjects: Internet telephony -- Security measures , Computer networks -- Security measures , Digital telephone systems , Communication -- Technological innovations , Computer network protocols , TCP/IP (Computer network protocol) , Switching theory
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4683 , http://hdl.handle.net/10962/d1007714 , Internet telephony -- Security measures , Computer networks -- Security measures , Digital telephone systems , Communication -- Technological innovations , Computer network protocols , TCP/IP (Computer network protocol) , Switching theory
  • Description: Traditionally, real-time communication, such as voice calls, has run on separate, closed networks. Of all the limitations that these networks had, the ability of malicious attacks to cripple communication was not a crucial one. This situation has changed radically now that real-time communication and data have merged to share the same network. The objective of this project is to investigate the securing of softswitches with functionality similar to Private Branch Exchanges (PBX) from malicious attacks. The focus of the project will be a practical investigation of how to secure ILANGA, an ASTERISK-based system under development at Rhodes University. The practical investigation that focuses on ILANGA is based on performing six varied experiments on the different components of ILANGA. Before the six experiments are performed, basic preliminary security measures and the restrictions placed on the access to the database are discussed. The outcomes of these experiments are discussed and the precise reasons why these attacks were either successful or unsuccessful are given. Suggestions of a theoretical nature on how to defend against the successful attacks are also presented.
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  • Date Issued: 2007

Securitisation and its application to low cost housing finance in South Africa

  • Authors: Zimbwa, Allan Golden
  • Date: 2007
  • Subjects: South Africa. Constitution , Human rights -- Government policy -- South Africa , Right to housing -- South Africa , Housing -- Law and legislation -- South Africa , Housing policy -- South Africa , Low income housing -- South Africa
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:1011 , http://hdl.handle.net/10962/d1002746 , South Africa. Constitution , Human rights -- Government policy -- South Africa , Right to housing -- South Africa , Housing -- Law and legislation -- South Africa , Housing policy -- South Africa , Low income housing -- South Africa
  • Description: Section 26 of the Constitution of South Africa Act 108 of 1996 provides that housing is a basic human right and that the government must take reasonable legislative and other measures to achieve the realisation of this right. A number of measures were taken to try to resolve this socio-economic issue. A number of housing institutions were established , various pieces of legislation were passed and housing subsidies were provided. However, housing backlogs remain a challenge. In March 1994 the housing backlog was estimated between 1,3 and 1,8 million units. When more than a million houses were provided by 2001 , the housing backlog had increased to between 2 and 3 million houses. To date subsidies in excess of R29 billion have been spent on housing provision. A study by the Department of Housing concluded that, at the current rate of increase of housing funding vis-a-vis the growing backlog and rapid urbanisation, the household backlog will not be changed in ten years' time. The United States of America (USA) had a similar low cost housing problem, but securitisation alleviated it with the participation of government agencies Fannie Mae, Ginnie Mae and Freddie Mac. In South Africa, the NHFC tried to emulate the USA model by establishing Gateway Home Loans (Pty) Limited (Gateway) in 1999. Gateway, however, was not a success. This research investigates whether securitisation can be applied in South Africa to alleviate the low cost housing issue. The study finds that there is a credit availability gap for the low income sector earning less than R8 000 per month because of the perceived risk of default and unwillingness by banks to lend to this sector. The increase in housing backlog that continues unabated, inadequate housing finance system to low income earners, the lessons learnt from the failure of Gateway, the success factors of the USA securitisation model and the sound and sophisticated South African financial system are the rationale for applying securitisation. A proposal of how to effectively apply securitisation to low cost housing in South Africa is provided with recommendations to revive the primary market.
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  • Date Issued: 2007

Segregated housing and contested identities: the case of the King William's Town coloured community, 1895 - 1946

  • Authors: Victor, Stephanie Emilia
  • Date: 2007
  • Subjects: Colored people (South Africa) -- Race identity Colored people (South Africa) -- Political activity South Africa -- Race relations Colored people (South Africa) -- Housing Housing -- South Africa -- King William's Town Colored people (South Africa) -- Relocation Colored people (South Africa) -- South Africa -- King William's Town
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2568 , http://hdl.handle.net/10962/d1002421
  • Description: This thesis is a case study of the dynamics of coloured housing in King William's Town between 1895 and 1946. The impact of spatial segregation on pre-apartheid coloured settlements in the Eastern Cape has largely been ignored up to the present. This needs to be rectified as the lack of in-depth enquiry can lead to misinterpretations that may influence contemporary politics and identity formation. Through research based on primary sources, it has become apparent that segregation in King William's Town was safeguarded and rationalized through the discourses of sanitation and civilization, and the practices of relocation and removal. The existing slum cond itions were used as a convenient excuse to implement municipal control. Segregation compounded the problem of poverty, inequitable access to housing and the provision of basic services. As a result, local coloured housing was increasingly characterised by a shortage of decent accommodation and basic services, decreasing home ownership and increasing municipal tenancy. In addition, through the implementation of the 1923 Natives (Urban Areas) Act and the 1934 Slums Act, high sanitation standards were set, but the Council itself provided inferior services. Ironically, conditions in the relocated municipal settlements were also not on par with the provisions stipulated in the Slums Act that were used to effect removal in the first place. The implementation of racially exclusive housing was, therefore, not driven by a single role player. It was pioneered by the local authorities, legalised by national government and supported by the coloured elite, when needed, in an attempt to access decent housing. This occurred mainly through the political manoeuvring of the coloured elite, and specifically the African Political (later People's) Organisation (APO), the Afrikaanse Nasionale Bond (AN B) and the locally constituted Coloured Welfare Association (CWA) in King William 's Town. These organisations attempted to procure access to housing within the narrow boundaries of a prescribed identity. Segregated housing therefore fostered and sustained coloured identity. It consolidated feelings of separateness and division and provided impetus for the construction of race and even racial tension. Coloured identity attempted to serve as a rallying point to overcome differences in religion, family and social networks and place of residence in order to procure access to housing. It was not, however, able to overcome the occasional division between settlements, caused by well-developed placeidentities, which still inform the contemporary housing milieu. The coloured elite initially did not question the legitimacy of coloured identity. Only in 1939, under threats of increased residential segregation, combined with the resulting opposition in coloured protest politics, was the legitimacy of coloured identity publicly contested . By 1943, with the creation of the Coloured Advisory Council (CAC), local coloured unity proved to be insufficient. A division within the ranks of the local coloured elite was evident. As a result, the expression of coloured identity still remains contested in contemporary King William's Town.
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  • Date Issued: 2007

Selecting stories to tell: the gatekeeping of international news at SAfm

  • Authors: Ticha, Abel Akara
  • Date: 2007
  • Subjects: South African Broadcasting Corporation SAfm (South Africa) Radio broadcasting -- South Africa Foreign news -- South Africa Radio journalism -- South Africa
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:3499 , http://hdl.handle.net/10962/d1004520
  • Description: The premise of this thesis is that the selection of international news to be aired on the bulletins of SAfm by SABC Radio News staff is influenced by more complex factors than could be seen solely from the prism of an empirical journalistic paradigm. Drawing from data obtained through participant observation and interviewing, it is noted that there has been a revolution from a propagandist approach during apartheid to a professional approach following the demise of apartheid, in the selection of international news for bulletins on SAfm. Using Lewin's theory of forces in decision making and locating it within four out of five levels of a framework of gatekeeping analysis provided by Shoemaker (1991) and Shoemaker et al (200 I), it is concluded that the delimiting well-tested routines of newsmaking act as powerful companions of individuals' selection decisions of international news broadcast on SAfm's bulletins. However, these routines are adapted to meet the organisational demands of the SABC, which as a Public Service Broadcaster (PBS) has embraced the discourse of South African nationalism/panAfricanism, as a major philosophy underpinning the Corporation's coverage of the world. Therefore, some individual, routine and organisational factors influencing the se lection of international news broadcast on SAfm's bulletins, are predetermined and co-determined by the social system (the ideological/discursive structure), which is promoted by certain social institutions. Instances of spokespersons of such institutions as governments, international governmental and non-governmental organisations, etc., officiating the news abound; the gatekeepers use them to meet routine professional standards of journalism. This potentially works to sustain the hegemonic discourses of the powerful in international affairs (in tenns of core/peripheral nations relations, and elite classlruled majority relations) though there is a conscious oppositional effort to modify or dwarf stories that explicitly promote imperialism and to hold rulers accountable to the public. It is posited that the time is ripe for newsworkers responsible for the production of bulletins for SAfm to take the risk that may be necessary to inject a few changes in routine practices that could limit the engineering of consent to the powerful elites in the international arena.
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  • Date Issued: 2007

Self-efficacy and the recognition of prior learning

  • Authors: Rudman, Neville
  • Date: 2007
  • Subjects: Accreditation (Education) -- South Africa , Universities and colleges -- Accreditation -- South Africa , Experiential learning -- South Africa
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:9536 , http://hdl.handle.net/10948/689 , Accreditation (Education) -- South Africa , Universities and colleges -- Accreditation -- South Africa , Experiential learning -- South Africa
  • Description: The Recognition of Prior Learning (RPL), a mechanism grounded in the educational transformational policies of the African National Congress to redress the historical legacy of Apartheid, is a relatively new (and often contested) concept in South Africa. This research endeavors to investigate the effect of a module, which forms part of a B.Ed (upgrade) programme and is based on the processes and principles of RPL, on students’ (in-service teachers’) self-efficacy and their skills in terms of the development and execution of work schedules and lesson plans (the RPL-focus of the module). The methodology includes the gathering of quantitative and qualitative data through the administering of pre- and post- self-efficacy questionnaires, assessment of the portfolios of evidence produced by the students, and the feedback obtained from the focus-group interviews. The data indicate a statistically significant improvement in the participating students’ self-efficacy and draw attention to the negative issue of context in previously disadvantaged South African schools. The significance of this research lies not only in the interrogation of an innovative approach to dealing with RPL issues in an academic programme, and its possible influence on teacher self-efficacy, but also in its contribution to the academic debate about the RPL process which is currently taking place both locally and internationally.
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  • Date Issued: 2007
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