Browsing by Title
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Naidoo, Vaughn; Tucker, William D. (Telkom, 2001)[more][less]
Abstract: Next Generation Networks use policy-based network management and QoS protocols to provide voice services on IP networks. Large numbers of older equipment still push IP packets. We present several solutions that include legacy equipment into a PBNM and QoS system. A static design uses traffic shaping at the legacy edge. A dynamic solution uses a Quasi-PEP implemented over RSVP and COPS. Preliminary test results are presented for the static solution. Collected data shows that the solution decreases packet loss on the legacy side. URI: http://hdl.handle.net/10566/519 Files in this item: 1
NaidooTuckerNextGenNetworks2001.pdf (59.43Kb) -
Cliffe, Lionel (PLAAS, University of the Western Cape, 2007)[more][less]
Abstract: Since the 2005 Land Summit, new approaches to land reform have been on the agenda, yet there remains little clarity on the way forward. The main focus has been on means of accelerating the redistribution of land through new modes of acquiring land. Acquisition is an important matter but if treated in isolation risks mis-specifying the core problems evident in land reform in South Africa. A new phase of land reform located within a wider agrarian reform is needed and will require new institutional arrangements. Any alternative strategy will have to revise the institutional mechanisms that have been handling land reform thus far. Are the procedures and the institutions that are in place to design and implement land reform adequate and appropriate to the kind of new tasks envisaged? What new farming units and activities are intended, and what post-transfer support will be required to make this agricultural system productive? This paper explores mechanisms appropriate to one kind of agricultural alternative: a vision of a productive, small-scale essentially household farm sector. URI: http://hdl.handle.net/10566/66 Files in this item: 1
Cliffe_Policy2007.pdf (365.8Kb) -
Ravjee, Neetha (University of the West Indies, Distance Education Centre, 2007)[more][less]
Abstract: Introduction: The appearance of information and communication technologies (ICTs) at the intersection of competing perspectives on higher education transformation in South Africa suggests that the increasing use of ICTs is not an automatic ‘good in itself’ but needs to be problematised. This paper first describes the new ICT-related practices emerging in South African higher education institutions, and then identifies and compares four broad approaches informing the relation of these new practices to higher education change. The first three approaches conceive of this relationship in terms of the role of ICTs in effecting specific changes in higher education institutions, while the fourth approaches the relation discursively. The final section describes access patterns in ‘dual-mode’ institutions, and asks whether the emerging trends are redefining the meanings of access to higher education. In thinking about how to re-imagine current elearning practices outside of the tight globalisation script, this paper supports a framework that both embraces the possibilities offered by online pedagogies, and problematises central aspects of the political economy and cultural politics of e-learning in higher education. URI: http://hdl.handle.net/10566/413 Files in this item: 1
RavjeeElearningICT2007.pdf (311.1Kb) -
Piper, Laurence; Nadvi, Lubna (Zed Books, 2010)[more][less]
Abstract: This chapter seeks to explore the character of popular mobilization in South Africa, mostly at the local level. This is done through exploring the interaction of two independent processes. The first concerns the relative empowerment of political parties and the disempowerment of civil society (especially social movements) by the democratization process in South Africa. The second concerns the introduction of new institutions of public participation in local governance. Hence, while the latter are portrayed as ‘invited spaces’ in which communities can engage the local state constructively, the poor design of these spaces, a lack of genuine will on the part of elites and the relative power of key social actors mean that, in practice, they are either meaningless processes or simply co-opted by political parties. Notably, civil society has tended either to disengage from the local state and focus on provincial and national levels, or to resort to forms of popular protest to be heard by local government – the non-governmental organization (NGO) sector usually favouring the first approach and social movements the second. URI: http://hdl.handle.net/10566/488 Files in this item: 1
PiperPartyDominance2010.pdf (133.1Kb) -
Glaser, Meryl; Tucker, William D.; Mashao, Daniel (Telkom, 2004)[more][less]
Abstract: Following on the development of several prototypes, we have built a semi-automated Deaf Telephony prototype on the SoftBridge platform. This prototype relays text and speech between Deaf users on the Internet and hearing users on the telephone system. Previous work with a pilot trial in the laboratory revealed several opportunities for enhancement. We added a Wizard of Oz (WoOz) to replace the poorly performing automatic speech recognition functionality as well as H.323 breakout, more extensive logging and advanced call initiation functionality. In order to trial the current prototype, we initiated an Information and Communication Technology (ICT) training programme with the Deaf Community of Cape Town. Twenty Deaf users participated in the training. In addition to the training, much baseline user data was collected to give an indication of how Deaf users communicate with hearing users as well as how familiar they are with ICT devices and services. The work for the rest of this year requires us to recruit and train a WoOz operator. Subsequent trials will essentially consist of monthly cycles of prototype introduction, training, automated metric and log collection, user feedback and then feature enhancement. Linguistic analyses of the text output of the Deaf users will be analyzed. We hope to refine the SoftBridge prototype to fit the needs of the Deaf and hearing users, from both technical and social viewpoints. We expect that these iterative cycles will continue for some time and will teach us many lessons regarding multi-modal semi-synchronous IP-based communications systems. URI: http://hdl.handle.net/10566/447 Files in this item: 1
GlaserTuckerMashaoDeafTelephony2004.pdf (133.0Kb) -
Igumbor, Ehimario U.; Puoane, Thandi; Gansky, Stuart A.; Plesh, Octavia (James Cook University, 2011)[more][less]
Abstract: Background: Despite the acknowledgement that chronic pain may be a problem for adults in rural settings, there is a lack of epidemiological investigations on its occurrence in rural South Africa. Objectives: To estimate the prevalence of chronic pain among adults in a rural community in South Africa and characterize the localization, severity, risk indicators and responses of pain sufferers. Methods: Cross-sectional analytical study using face-to-face interviews. Interviews elicited information on socio-demographic characteristics, general health status and presence of pain. Among those reporting pain, the duration, frequency, severity, activity limitation and impact was determined. Univariate statistics were used to describe the prevalence of chronic pain while bivariable χ2 tests and multivariable logistic regression models were used to assess the relationship of socio-demographic characteristics and reported health status with chronic pain. Results: A total of 394 adults were interviewed representing a response rate of 92.8%. Of these, 169 (42.9%; 95% CI: 37.4%-47.1%) reported suffering from chronic pain. The common sites were the back, knee, ankles, head and shoulders. The median pain score was 6 on a scale of 0-10 (IQR= 5-8) and the median number of sites of pain was 1 (IQR= 1-2). The type of pain slightly varied with age with younger adults reporting more back pain and headaches while older people reported more joint pain. Female gender (adjusted odds-ratio AOR= 2.2, 95% CI: 1.9-2.8) and being older than 50 years (AOR= 3.1, 95% CI:2.7-3.9) were identified as risk indicators for chronic pain in the sample. Respondents reported that they self-treated (88.3%); consulted with a doctor or nurse (74.3%); traditional-healer (24.5%) and spiritual-healer (4%). Most respondents (63.4%) reported only transient relief of their pain. Conclusions: Chronic pain is an important health problem in the surveyed community. Further comparative studies on the relationship with risk factors are needed meanwhile interventions targeting females and the elderly are recommended. URI: http://hdl.handle.net/10566/430 Files in this item: 1
IgumborChronicPain2011.pdf (180.6Kb) -
Bradley, Hazel A.; Puoane, Thandi (International Society on Hypertension in Blacks, 2007)[more][less]
Abstract: The project aimed to identify factors that contribute to hypertension and diabetes and to design and implement appropriate local interventions to prevent these non-communicable diseases and promote healthy lifestyles. This was a community-based participatory action research project in which researchers and community health workers (CHWs) were the main participants. The triple A approach to planning interventions was used, that is, the process of assessing the situation, analyzing the findings, and taking action based on this analysis. Both qualitative and quantitative methods were employed. Twenty-two CHWs working in site C, Khayelitsha, a deprived urban area of Cape Town, South Africa, participated in the study. Findings from the situational assessment indicated a lack of knowledge among CHWs and the community about hypertension and diabetes and the risk factors for these non-communicable diseases. Economic constraints and cultural beliefs and practices influenced the community’s food choices and participation in physical activity. On the basis of these findings, a training program was proposed that would provide CHWs with the skills to prevent hypertension and diabetes in their community. A program was developed and piloted by the project team. A health club that focuses on promoting healthy lifestyles is currently being piloted. This paper illustrates the unique involvement of CHWs in a successful participatory action research project on the prevention of hypertension and diabetes and promotion of health in a deprived urban setting. The project emphasizes the importance of involving local people in community-based initiatives to promote health and identifies that the primary role of health services is to develop appropriate skills in the local community, monitor activities, and facilitate a link with primary health services. URI: http://hdl.handle.net/10566/182 Files in this item: 1
BradleyPuoanePrevention2007.pdf (184.0Kb) -
Mujuzi, Jamil Ddamulira (Juta Law, 2008)[more][less]
Abstract: When the death penalty was declared unconstitutional in South Africa, the government enacted the Criminal Law Amendment Act in 1997 which, amongst other things, stipulated that a person convicted of some of the scheduled offences was to be sentenced to life imprisonment unless there were substantial and compelling circumstances. Many courts interpreted substantial and compelling circumstances in many different, and at times confusing, ways. The Supreme Court of Appeal clarified the meaning of substantial and compelling circumstance in the well-known Malgas case in which it held, inter alia, that courts should not lightly depart from imposing severe sentences, since the legislature had singled out the scheduled offences to be punished severely because they are serious offences. One of the criteria the Court set was that courts should not rely on ‘speculative hypotheses favourable to the offender’ to avoid imposing life sentences. However, recently, in the Nkomo case, the Court held that the prospect of rehabilitation of the offender is a substantial and compelling circumstance to justify the imposition of a lesser sentence. This article analyses rehabilitation as an objective of punishment and highlights the likely challenges associated with the approach the Court seems to be adopting. URI: http://hdl.handle.net/10566/420 Files in this item: 1
MujuziLifeImprisonment2008.pdf (214.8Kb) -
Albertus, Chesne (University of the Western Cape, 2012)[more][less]
Abstract: This paper is aimed at critically assessing the new section 79 of the Correctional Services Act and whether it creates a medical parole system which protects the dignity of inmates and gives due consideration to public safety. URI: http://hdl.handle.net/10566/518 Files in this item: 1
AlbertusMedicalParole2012.pdf (722.4Kb) -
Hart, Genevieve (LIASA Forum Press, 2004)[more][less]
Abstract: The paper explores the impact of educational change in South Africa on public libraries. It surveys the recent literature to conclude that the position of school libraries is precarious and that public librarians feel victimised by the new curriculum. This represents a puzzling contradiction, as librarians’ expectations were that the ethos and methodologies of the new curriculum, Curriculum 2005 (C2005), would provide a more favourable climate. The curriculum has indeed brought increased use of public libraries by school learners yet there has been little recognition in official quarters of the educational role of public libraries. It is suggested that, if librarians are to gain a better footing in curriculum planning, they need to engage with educationists as to the role libraries play in resource-based learning. They will need to provide documented evidence by means of research studies. As an example of such a study, the paper describes the author’s study of school learners’ use of two public libraries in a disadvantaged community in Cape Town. The libraries were found to be playing a crucial role in the learning programme of the learners. However, it is suggested that the two libraries need to design more systematic structured programmes if the needs of school learners for information literacy education are to be met. This might require explicit endorsement of their educational role by their own governance structures and the provincial Education Department. URI: http://hdl.handle.net/10566/441 Files in this item: 1
HartPublicLibraries2004.pdf (240.5Kb) -
Cowan, Donald A.; Sayed, Muhammed F.; Tsekoa, Tsepo L.; Cameron, Rory A.; Sewell, B. Trevor (Academy of Science of South Africa (ASSAf), 2004)[more][less]
Abstract: Microbial nitrile hydratases are important industrial enzymes that catalyse the conversion of nitriles to the corresponding amides. Bacillus strain RAPc8 nitrile hydratase has recently been cloned and functionally expressed in E. coli. Here, the purification, crystallization and preliminary X-ray diffraction data of this nitrile hydratase are described. The heterotetrameric enzyme was crystallized using the hanging-drop vapour-diffusion method. Crystals produced in the presence of 30% PEG 400, 0.1 M MES (pH 6.5) and 0.1 M magnesium chloride were selected for X-ray diffraction studies. A data set complete to 2.5 Å was collected under cryoconditions at the in-house X-ray source at the University of the Western Cape. The space group was determined to be primitive tetragonal (P41212) with unit cell dimensions a = 106.61 Å, b = 106.61 Å, c=83.23 Å, = = =90°; with one dimer per asymmetric unit. Solution of the three-dimensional structure via molecular replacement is in progress. URI: http://hdl.handle.net/10566/167 Files in this item: 1
TsekoaPurification2004.pdf (784.0Kb) -
McMillan, Wendy; Parker, M.E. (Routledge, 2005)[more][less]
Abstract: This paper discusses quality evaluation of health sciences mentoring programmes. The discussion highlights the way in which perceptions of what constitutes quality shape evaluative purposes. Potential tensions between the evaluative purposes of various stakeholders are brought to the fore. To this end, the discussion explores the ways in which accountability shapes the evaluative purposes of funders and how the desire for programme knowledge and development frames the evaluative purposes of academics. Various approaches to programme evaluation are examined. The potential of reflective practice as a tool for examining quality for knowledge and development of programmes is considered. The paper concludes by presenting a framework for evaluating various aspects of quality in mentoring programmes. URI: http://hdl.handle.net/10566/85 Files in this item: 1
McMillan_Quality2005.pdf (300.2Kb) -
Luescher-Mamashela, Thierry (Faculty of Education, University of the Free State, 2009)[more][less]
Abstract: The racial desegregation of the student bodies of historically white universities in South Africa has had significant political implications for student politics and university governance. I discuss two key moments in the governance history of the University of Cape Town (UCT) critically. The first involves the experience of racial parallelism in student governance in the late 1980s and early 1990s, making specific reference to the re-conceptualisation of the UCT Students’ Representative Council (SRC) as a ‘NUSAS-SRC’, along with the recognition of the political salience of race in the student body. The second traces the origins of the demographic representivity rule in the university’s statute to student demands for the dissolution of the UCT Council, and its replacement by a Transformation Forum in the early 1990s. I thus show that the recognition of race as politically significant in university governance is the outcome of a deliberate struggle, by students in general, and black students in particular, to de-privatise and politicise any sense of racial/racist marginalisation, and therefore to open up race as a topic for deliberation in the political realm of the post-apartheid university. Thus, the institutionalisation of race has come to serve the interests of the struggle for non-racialism. Description: Research article URI: http://hdl.handle.net/10566/226 Files in this item: 1
LuescherDesegregation2009.pdf (145.3Kb) -
Zinn, Sandy (Library and Information Association of South Africa, 2009)[more][less]
Abstract: E-learning has come of age in South African higher education but scepticism, caution and an inadequate reward system for innovative teaching methods have resulted in a slow uptake by academics. Within this milieu the author pioneered a course in the ACE School Librarianship programme. The study describes the e-learning experiences of the course participants gleaned from questionnaire responses to questions related to experiences of ICTs, the Internet and online learning, ability to navigate the e-learning environment, utilization of elements of the learning management system and implementation of course ideas in their respective schools and personal lives. The study also provides an opportunity for the author to reflect on her pioneering experiences with e-learning and how she would approach it differently next time. The main lessons learned were that 1) the e-learning environment is not necessarily intuitive and participants need opportunities to digest novel features such as the discussion forum; 2) several of the advantages and disadvantages of e-learning that appear in the research literature are identified in this study; and 3) setting up an e-learning course is best achieved incrementally. URI: http://hdl.handle.net/10566/526 Files in this item: 1
ZinnE-learning2009.pdf (350.4Kb) -
Segers, Vaughn; Connan, James (2009)[more][less]
Abstract: This paper discusses an implementation for gesture recognition using eigenvectors under controlled conditions. This application of eigenvector recognition is trained on a set of defined hand images. Training images are processed using eigen techniques from the OpenCV image processing library. Test images are then compared in real-time. These techniques are outlined below. URI: http://hdl.handle.net/10566/63 Files in this item: 1
Segers_Real2009.pdf (179.9Kb) -
Nleya, Ndodana; Tapscott, Chris; Thompson, Lisa; Piper, Laurence; Esau, Esau (Unisa Press, 2011)[more][less]
Abstract: Protest politics in South Africa has a long history and has been deployed differentially in different historical moments. Whereas protests formed an important vehicle during the fight against apartheid, their rebirth and propulsion to the centre of the struggles in the post-apartheid dispensation have come as a surprise to many. A majority of these protests, so-called ‘service delivery protests’, are reported as emanating from communities’ dissatisfaction with municipal service delivery as well as problems relating to lack of communication between council and councillors on the one hand and citizens on the other. In this article, we interrogate data from five study sites located in Cape Town and Pietermaritzburg. While we found support for the importance of service delivery, our data contradicts many widely held assertions as regards what causes these protests. We were able to show, for example, that these so-called ‘service delivery protests’ may actually emanate from reasons that extend beyond service delivery. Since our data indicates that levels of participation in Cape Town are higher than in Pietermaritzburg on the one hand, illustrating perhaps the different provincial contexts, there is also variation between the relatively high participation rates of the ‘black African’ sites of Langa and Khayelitsha, on the one hand, and the lower rates of the ‘coloured’ site of Bonteheuwel, on the other, which we ascribe to the disengagement of the community in Cape Town, from both local and national politics. URI: http://hdl.handle.net/10566/555 Files in this item: 1
NleyaProtestPolitics2011.pdf (2.491Mb) -
Utama, Paku (2011)[more][less]
Abstract: This paper identifies the link between gatekeepers and corruption, and examines how money laundering mechanisms are used to conceal the proceeds of corruption. In order to successfully trace and recover stolen assets, we need to understand how gatekeepers utilize various money laundering mechanisms and offshore financial centres. This writing highlights how gatekeepers operating in the private sector, wittingly or unwittingly, use their expert knowledge of the international financial system to facilitate corruption by helping corrupt leaders legitimate, secure, and obfuscate the movement of the proceeds of corruption within the global banking system. It also looks at potential alternative responses to further curb gatekeeper’s roles in the money laundering process. URI: http://hdl.handle.net/10566/241 Files in this item: 1
UtamaStolenAssets2011.pdf (613.2Kb) -
Langenhoven, Belinda; Dyssel, Michael (Springer, 2007)[more][less]
Abstract: The article reflects the findings of a survey undertaken in Mitchell’s Plain and presents a case study of the factors that impact recycle-related employment tendencies and opportunities in the area of the Cape Flats in South Africa. The article states recycling also has advantages for the creation of formal and informal employment and it can be enhanced with the encouragement of local authorities through incentives URI: http://hdl.handle.net/10566/542 Files in this item: 1
LangenhovenMitchellsPlain2007.pdf (978.8Kb) -
Pretorius, Joelien (University of the Free State, 2008)[more][less]
Abstract: This article traces the politics of meaning-fixing with respect to the role of the defence force as apartheid declined from the mid-1980s, as it was negotiated from a current to a past organising principle of the “security imaginary” in the period 1990 to 1994 and as the post-apartheid period commenced after the 1994 elections. URI: http://hdl.handle.net/10566/454 Files in this item: 1
PretoriusSecurity2008.pdf (663.5Kb) -
Tucker, William D.; Blake, Edwin H.; Marsden, Gary; Pearson, Murray; Westerveld, Rudi (Telkom, 2007)[more][less]
Abstract: This paper reports on three years of research and fieldwork with a rural wireless Internet Protocol communication project. We built a long-range WiFi network and custom communication software to support a rural telehealth project in the remote Eastern Cape. We report on our work using cellular networks, devices and applications as reference technologies because our users and beneficiaries are very comfortable with them. Of most concern are the technological and contextual issues affecting take up of the systems we designed. The paper intends to provide a summary analysis of our experience so that others in the field can learn from our successes and mistakes with respect to rural Information and Communication Technology for Development (ICT4D) in a South African context. URI: http://hdl.handle.net/10566/487 Files in this item: 1
TuckerIP-Communication2007.pdf (1.427Mb)