Browsing by Title
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Kobo, Hlabishi Isaac; Tucker, William D.; Norman, Michael (Telkom, 2010)[more][less]
Abstract: This paper discusses a way of offering voice instant messaging based on Internet Protocol using Session Initiation Protocol. The purpose of this investigation is to enhance the modern social communication amongst the people of South Africa who are already accustomed to text-based instant messaging. The proposed application aims to implement the traditional Push-to-Talk technology using Internet Protocol. Thus the proposed IP-based Push-to-Talk is a new approach to voice communication which emulates a walkie-talkie system. On the mobile phone IP-Push-to-Talk herein referred to as Push-to-Talk over a cell phone can be viewed as a voice SMS. The adoption of a Push-to-Talk service was inspired by the fact that it applies half-duplex communication. This enhances the primary objective of offering a cheap voice instant messaging. In half-duplex communication, only one person can talk at a time, thereby avoiding bidirectional charging. The project was implemented on two platforms, a PC and a mobile phone. The PC Push-to-Talk was implemented through client server approach whilst the mobile Push-to-Talk through a peer-to-peer approach. Several software engineering strategies were used for user requirements gathering as well for testing. Six users participated in the test and the results were gathered through questionnaires. The results showed that, half-duplex communication is efficient and yet very economical as it makes less usage of system resources. URI: http://hdl.handle.net/10566/623 Files in this item: 1
KoboNormanTucker-SATNAC2010.pdf (532.1Kb) -
Jeffries, Michael; Tucker, William D. (Telkom, 2001)[more][less]
Abstract: The Session Initiation Protocol and H.323 dominate the Voice over IP world. These signaling protocols are responsible for call setup and call tear down by IP telephony solutions. This project analyses and discusses the underlying H.323 and SIP interoperability issues and intends to build a scalable solution for the interoperability of these protocols. The gateway maps the call sequences between the two protocols. A test scenario establishes a barrage of call setup and tear down requests to test the scalability of any H.323/SIP interoperability solution. URI: http://hdl.handle.net/10566/465 Files in this item: 1
JeffriesTuckerSIP2001.pdf (65.32Kb) -
Jeffries, Michael; Tucker, William D. (Telkom, 2000)[more][less]
Abstract: Current VoIP signaling protocols are interoperable with the PSTN SS7 via H.323-to-SS7 or SIP-to-SS7 gateways. As we move toward the Next Generation Network, the PSTN falls away and we work toward carrier-grade VoIP interoperability between H.323, SIP, and other future VoIP signaling protocols. This paper present a Work in Progress to design and implement a solution based on the Internet Protocol itself. URI: http://hdl.handle.net/10566/425 Files in this item: 1
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Mohamed, Nadia; Peerbhay, Fathima (Health and Medical Publishing Group, 2012)[more][less]
Abstract: This article serves to report on the introduction of an innovative ‘blended learning’ approach in the Paediatric Dentistry Department at the University of the Western Cape (UWC) in Cape Town, South Africa. This intervention was the first of its kind to be introduced at UWC’s dentistry faculty. Methods Educational resources were placed online to supplement didactic and clinical teaching and in so-doing, compensate for the lack of chair side teaching. An online learning platform was thus provided for students to engage with. Results Forty-seven percent of students accessed the site. The evaluation of the course by these 4th and 5th year students was mostly positive. Students who did not access the site provided a variety of reasons for not doing so, with the main reasons being the ‘lack of time’ (40%) and ‘lack of IT resources’ (41%). Conclusion This intervention highlighted the fact that ‘blended learning’ definitely has its place in the dentistry curriculum, especially if minor issues like access to resources can be addressed. The Paediatric Dentistry department at the University of Western Cape is continually pursuing current trends in teaching to provide an education that is on par with global standards. URI: http://hdl.handle.net/10566/524 Files in this item: 1
MohamedDentistryE-learning2011.pdf (471.1Kb) -
Frantz, Jose M. (Faculty of Community and Health Sciences, University of the Western Cape, 2008)[more][less]
Abstract: A number of initiatives were launched in various countries worldwide to provide quality physical education in schools. However, the promotion of participation in sport and specifically elite sport is still regarded to be economically more feasible, than the introduction of physical education in schools and “sport for all” programmes at community level. In order to improve the current situation, the conventional ideas of the school physical education programme needs to be reconsidered and more serious consideration should be given to the preferences and needs of the key stakeholders. The aim of the study was to determine the views of teachers and learners with regards to physical education and the promotion of physical activity in a local community school. Participants included learners and teachers involved in life orientation and coaching of sport in a high school in a local community in the Western Cape, South Africa. The school was purposively selected as it caters for the previously disadvantaged learners in the area. Data was collected by means of focus group discussions. The results indicated that both the learners and teachers appreciated the benefits associated with participation in physical education but also highlighted significant barriers that prevented the effective implementation of physical education programmes in the school. South Africa needs a structured, cost effective approach to physical and health education in schools that stipulates national objectives and detailed strategies to realize the objectives. URI: http://hdl.handle.net/10566/118 Files in this item: 1
FrantzPhysicalEducation2008.pdf (46.38Kb) -
Grobler, Sias; Majeed, Abdul; Moola, Mohamad H.; Rossouw, Roelof; van Wyk Kotze, Theuns (Bentham Open, 2011)[more][less]
Abstract: To clinically evaluate the effectiveness of Nite White 10% carbamide peroxide with amorphous calcium phosphate, potassium nitrate and fluoride over a 6-month follow-up period. Nite White was applied nightly for 14 days, according to the manufacturer’s instructions. The color of teeth 11 and 21 of twenty one subjects was measured with a spectrophotometer (L*; a*; b*). Subjects were instructed to take note of any tooth sensitivity and gingival irritation. For all three components (L*, a* and b*) statistical significant differences (p<0.05) in the values between base-line (prebleaching) and; after treatment, after 1-month, after 3-months as well as after 6-months were found (Wilcoxon Signed Rank Sum Test). Significant differences were also found amongst the E*ab (0-14days) values and; E*ab (0-1 month), E*ab (0-3 months) and E*ab (0-6 months). However, no significant differences were found between pairs of E*ab (0-1 month), E*ab (0-3 months) and E*ab (0-6months). The decrease in E*ab was the highest after 1 month (~30%). The highest decrease in L* was about 58% after 1 month. Over the 14-day treatment period tooth sensitivity was 24.5%. Conclusions: Nite White ACP demonstrated significant tooth-whitening (unit increase = 5.29) with a low tooth sensitivity (25%) probably due to the presence of amorphous calcium phosphate, potassium nitrate, and fluoride. The whitening effect decreased the most after one month and then maintained well even after a 6 month period (units 3.89). URI: http://hdl.handle.net/10566/586 Files in this item: 1
GroblervivoSpectrophotometric2011.pdf (287.8Kb) -
Vuza, Xolisa; Tucker, William D. (Telkom, 2004)[more][less]
Abstract: We intend adding video messaging and conferencing to Multimodal Telemedicine Intecommunicator (MuTI), a previous system that has already been in place in the target environment. This is to allow a semi-synchronous communication to occur over the Internet Protocol. Videoconferencing can be used to communicate synchronously and video messaging in a store and forward fashion can be used to communicate asynchronously. MuTI supports store and forward of still images, voicemail and text. The system also supports real time communication by means of audio. The aim of this research is to learn how to bridge the digital divide by building applications that are useful and relevant to the users we build for. We are developing this application together with the users of the application in an iterative fashion where we build the prototypes and show the users at each cycle. The feedback that we get from the users plays an important role in building a prototype for the next cycle. The software will be instrumented to provide statistics about the system usage. We are also going to get data from the users by using questionnaires and compare this data with the statistics about software usage to see how much the system has been used and which features in the system do the users like. We are using a rural South African context in conducting this research. We hope to bring about guidelines and recommendations on how to develop applications to bridge the digital divide in a developing world context. URI: http://hdl.handle.net/10566/435 Files in this item: 1
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Wakefield, Lorenzo (Institute for Security Studies, 2011)[more][less]
Abstract: The Child Justice Act 75 of 2008 mandates the Minister of Justice and Constitutional Development to report annually on the implementation of the Child Justice Act to the Parliamentary Portfolio Committee on Justice and Constitutional Development. On 1 April 2011 a year had passed since the implementation of the Child Justice Act. This article interrogates the annual report presented to parliament on the first year of implementation of the Act, and concludes that it is not possible to accurately assess whether the Child Justice Act was implemented fully during the year, as the statistics provided in the annual report by different departments are unclear and incomparable. The article also reflects those aspects of the Act that have been implemented. URI: http://hdl.handle.net/10566/561 Files in this item: 1
WakefieldChildJustice2011.pdf (1.255Mb) -
Dewing, Sarah; Mathews, Cathy; Schaay, Nikki; Cloete, Allanise; Simbayi, Leickness; Louw, Johann (Springer, 2013)[more][less]
Abstract: There is growing interest in standard care programmes for antiretroviral (ARV) adherence support. In South Africa, individual counselling following ARV initiation is a main strategy for supporting adherence in the public sector. Egan’s client-centred ‘‘Skilled Helper’’ counselling model is the predominant model used in HIV counselling in this context. This study evaluated counselling delivered by lay ARV adherence counsellors in Cape Town in terms of adherence to Egan’s model. Thirty-eight transcripts of counselling sessions with non-adherent patients were analysed based on the methods of content analysis. These sessions were conducted by 30 counsellors. Generally counsellors’ practice adhered neither to Egan’s model nor a client-centred approach. Inconsistent with evidence-based approaches to counselling for ARV adherence support, counsellors mainly used informationgiving and advice as strategies for addressing clients’ nonadherence. Recommendations for improving practice are made. The question as to how appropriate strategies from developed countries are for this setting is also raised. URI: http://hdl.handle.net/10566/510 Files in this item: 1
DewingARV-Support2013.pdf (186.3Kb) -
Hart, Genevieve (Elsevier, 2010)[more][less]
Abstract: Job satisfaction was investigated at a South African university library undergoing change on many fronts. The study included 31 members of staff and the data were gathered via interviews/questionnaires, informed by standard HRM job satisfaction theory. The study found a “love–hate” relationship between respondents and their work. The key positive finding is that 61% report overall job satisfaction—with the core work of an academic library, providing for the information needs of clients, the source. However, only 51% claim to be proud to work at their library and 50% are open to other job offers. Causes for the restlessness include a sense of stagnation, frustration with inadequate resources, and anger at poor remuneration. URI: http://hdl.handle.net/10566/252 Files in this item: 1
HartJobSatisfaction2010.pdf (1.839Mb) -
Tapela, Barbara (PLAAS, University of the Western Cape, 2005)[more][less]
Abstract: This report is based on research carried out between June 2003 and April 2005 in the Greater Sekhukhune Cross-Border District Municipality, which straddles the boundaries of the Mpumalanga and Limpopo provinces. This research took place in two case-study sites, namely the Hereford and the Phetwane Irrigation Schemes. However, this report focuses on findings from Hereford only. The research was primarily concerned with the impact of BEE, articulated through joint ventures, on the ‘livelihoods’ of people living in emerging small-scale irrigation schemes in some of the least affluent rural areas within the municipality. URI: http://hdl.handle.net/10566/71 Files in this item: 1
Tapela_Joint2005.pdf (816.7Kb) -
Lalu, Premesh; Harris, Brent (Southern African Literature and Culture Centre, UKZN, 1996)[more][less]
Abstract: This article draws inspiration from Jauss's theorisation of the concepts of horizon, reception, and construction. The problem we confront relates to the way we receive, interpret, and apply texts without cognisance of the ways our horizons advance, limit, and intersect with a multiplicity of meanings that might not have been foreseen by the text's contemporaries. What are the distances between public encounters with the past on the one hand, and on the other the testimonies heard by the Commission or readings of trauma offered by social scientists and historians? In this paper we wish to offer a tentative response to this question by reflecting on various readings of the trial of Andrew Zondo and the public testimony of Lephina Zondo at the TRC. We are interested in the ways in which truths, and histories, are produced "by virtue of multiple forms of constraint". URI: http://currentwriting.ukzn.ac.za Files in this item: 1
Lalu_Horizons1996.pdf (1.269Mb) -
Conradie, Ernst (Stellenbosch University, 2008)[more][less]
Abstract: This essay reconstructs the way in which Jürgen Moltmann tells the story of God’s work. This is done on the basis of a review essay by Douglas Farrow who identifies a neo-Platonic structure in Moltmann’s systematic contributions to theology. The argument of this essay is that Moltmann fails to distinguish adequately between creation and fall. This has significant implications for his understanding of salvation, church and eschatological consummation. In this way theology becomes preoccupied with the doctrine of providence and thus with the theodicy problem. URI: http://hdl.handle.net/10566/384 Files in this item: 1
ConradieMoltmann2008.pdf (136.6Kb) -
Yi, Long; Connan, James (Association for Computing Machinery, 2007)[more][less]
Abstract: Self-tuning has been an elusive goal for operating systems and is becoming a pressing issue for modern operating systems. Well-trained system administrators are able to tune an operating system to achieve better system performance for a specific system class. Unfortunately, the system class can change when the running applications change. Our model for self-tuning operating system is based on a monitor-classify-adjust loop. The idea of this loop is to continuously monitor certain performance metrics, and whenever these change, the system determines the new system class and dynamically adjusts tuning parameters for this new class. This paper describes KernTune, a prototype tool that identifies the system class and improves system performance automatically. A key aspect of KernTune is the notion of Artificial Intelligence (AI) oriented performance tuning. It uses a support vector machine (SVM) to identify the system class, and tunes the operating system for that specific system class. This paper presents design and implementation details for KernTune. It shows how KernTune identifies a system class and tunes the operating system for improved performance. URI: http://hdl.handle.net/10566/53 Files in this item: 1
Yi_KernTune(2007).pdf (262.3Kb) -
Yi, Long; Tucker, William D. (Telkom, 2008)[more][less]
Abstract: This paper describes Kiara, an open source SIPbased communication system that provides the building blocks to enable Deaf relay services. We have implemented a prototype that provides real-time text, voice and video to a variety of end user devices over a variety of networks. The work-in-progress concerns the addition of relay services for the Deaf. URI: http://hdl.handle.net/10566/523 Files in this item: 1
YiTuckerKiara2008.pdf (173.6Kb) -
Rowe, Michael (Faculty of Community and Health Sciences, University of the Western Cape, 2009)[more][less]
Abstract: Institutions of higher learning are under pressure to respond to the changing needs of today's learners and the use of information and communication technology has been at the forefront of that change. Furthermore, the use of social software to enable people to interact with each other in a dynamic way has been identified as one possible solution. This survey sought to identify the knowledge and attitudes of South African physiotherapy students towards the use of social software in a physiotherapy department. The design was a cross-sectional, descriptive survey that took place in a university physiotherapy department in the Western Cape, South Africa. It included 135 students and used a self-developed questionnaire. Results showed that these students had only a superficial understanding of social software and that they did not make use of common services. They did however, show an openness to new approaches and a willingness to interact with lecturers outside the traditional classroom setting. A lack of access to appropriate technology was identified as one possible factor for their lack of understanding. Conclusion Any attempt to incorporate social software to improve teaching and learning practice into this department would have to be accompanied by significant training and support. URI: http://hdl.handle.net/10566/62 Files in this item: 1
Rowe_Knowledge2009.pdf (68.47Kb) -
Frantz, Jose M. (Faculty of Community and Health Sciences, University of the Western Cape, 2008)[more][less]
Abstract: Objective: The author aimed to develop a valid and reliable questionnaire that would measure the knowledge of learners relating to risk factors for chronic disease of lifestyle such as stroke, diabetes and hypertension. The questionnaire was intended to be used as part of a health education programme aimed at improving the knowledge of learners as it relates to risk factors for chronic diseases of lifestyle. Method: The development of the questionnaire was guided by Williams 9 steps of questionnaire design and was influenced by the national curriculum of education’s life orientation programme and literature. A 31 item questionnaire was designed and presented to an expert panel. Content validity was done by the expert panel and face validity was tested through informal discussions with high school learners. Reliability testing was done using the test-retest method and Kappa co-efficient was used to test stability of the items. The questionnaire was administered to 40 high school learners but only 30 did the test the second time. Results: The questionnaire yielded a reliability analysis that revealed internal consistency with a Cronbach’s alpha of 0.897. The average score obtained by learners using this questionnaire was 14. The questionnaire can be used for learners with a grade 10 education. The questionnaire also highlighted that learners had a moderate knowledge relating to risk factors for chronic diseases of lifestyle and the need for appropriate information interventions was emphasized URI: http://hdl.handle.net/10566/115 Files in this item: 1
FrantzQuestionnaire2008.pdf (372.6Kb) -
Ntumba, Alexis; Scott, Vera; Igumbor, Ehimario U. (OpenJournals Publishing, 2012)[more][less]
Abstract: Background: Namibia bears a large burden of Human Immunodeficiency Virus (HIV), and the youth are disproportionately affected. Objectives: To explore the current knowledge, attitudes and behaviour of female adolescents attending family planning to HIV prevention. Methods: A cross-sectional study design was used on a sample 251 unmarried female adolescents aged from 13 years to 19 years accessing primary care services for contraception using an interviewer-administered questionnaire. Data were analysed using Epi Info 2002. Crude associations were assessed using cross-tabulations of knowledge, attitude and behaviour scores against demographic variables. Chi-square tests and odds ratios were used to assess associations from the cross-tabulations. All p-values < 0.05 were considered statistically significant. Results: A quarter of sexually active teenagers attending the family-planning services did not have adequate knowledge of HIV prevention strategies. Less than a quarter (23.9%) always used a condom. Most respondents (83.3%) started sexual intercourse when older than 16 years, but only 38.6% used a condom at their sexual debut. The older the girls were at sexual debut, the more likely they were to use a condom for the event (8% did so at age 13 years and 100% at age 19 years). Conclusions: Knowledge of condom use as an HIV prevention strategy did not translate into consistent condom use. One alternate approach in family-planning facilities may be to encourage condom use as a dual protection method. Delayed onset of sexual activity and consistent use of condoms should be encouraged amongst schoolchildren, in the school setting. URI: http://hdl.handle.net/10566/515 Files in this item: 1
NtumbaHIVFemaleAdolescents2012.pdf (438.9Kb) -
Wotshela, Luvoyo (Univ. of Fort Hare) (Published by History Dept, University of the Western Cape, 2009)[more][less]
Abstract: Since its initiation, South Africaʼs post-apartheid land reform programme has generated extensive analysis and critique that in turn has yielded a body of scholarship. Discussion revolves around the official policy of the programme, the challenges associated with its implementation and its reception at local levels. It cannot be overstated that much of the discourse on the formulation of the programme itself commenced in the dying years of apartheid, through a series of workshops, policy conferences, research projects and publications. Prompted by glaring disparities in the countryʼs social and living conditions and primarily by entrenched imbalanced landownership, contemporary land reform dialogue has a well-built backdrop. What, however, is our understanding of local community politics that played perceptible roles in triggering land redistribution and facilitating patterns of settlement? This article gives some insight into a veiled history of interplay between community mobilisation politics, governance and official land reform policy in the Lukhanji municipality of the Eastern Cape during South Africaʼs transitional years of 1995 to 2006. After outlining how land redistribution was initially driven by forces operating outside government action, the article proceeds to illustrate the frailty of the government land redistribution accomplishment. Moreover, it demonstrates the complex nature of a rural setting that has arisen from community-facilitated and incipient government land redistribution achievements in the area. URI: http://hdl.handle.net/10566/103 Files in this item: 1
WotshelaLand2009.pdf (520.8Kb) -
Bock, Zannie (Taylor & Francis, 2008)[more][less]
Abstract: This paper explores how two testifiers at the Human Rights Violation hearings of South Africa's Truth and Reconciliation Commission in 1996 used selected markers of evaluation (shifts in tense, the inclusion of direct speech and code-switching) to express evaluative meanings and position themselves, the police and their audiences in relation to their narratives. Both testifiers are mothers of young activists who were pursued, detained and tortured by police in the 1980s. The paper argues that it is through the subtle though significant linguistic choices the women make that their perspective is construed and their 'narrative truth' realized. URI: http://hdl.handle.net/10566/267 Files in this item: 1
Bock_Language2008.pdf (555.2Kb)