3. Electronic Theses and Dissertations (ETDs) - All submissions
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Item Evaluation of unilateral cleft lip repairs and the evolution of a new technique based on experience and research(2011-04-14) Christofides, Efthimios AndreasEvolution of cleft lip repair has been ongoing for many years. The reason for the various techniques stems from the advances relevant to function and aesthetics of the repair. Unfortunately, the literature does not reveal the long term results of many of these procedures with reference to normal lip anthropometrics. The reason for this is that the normal lip anthropometrics have not been adequately described. This study aims to describe a new technique for unilateral cleft lip repair and to substantiate its evolution by comparing it to the normal upper lips as well as to the most popular current technique of cleft lip repair (Millard technique). This will be done by the following steps: 1. Evaluate the most commonly used current technique of unilateral cleft lip repair (Millard rotation advancement), both objectively and subjectively. 2. Assess the normal anthropometric measurements of the horizontal lip dimensions. a. To assess normal horizontal lip dimensions according to different age categories to serve as reference values for further studies. b. To assess the timing where the lip is fully developed. vi c. To assess Cupid’s bow length in relation to horizontal lip length at different ages, thereby assessing dynamic changes with growth. 3. Compare the currently used technique of unilateral cleft lip repair to normal values indicating the anatomical drawbacks to the technique. 4. Describe a new technique for unilateral cleft lip repair which eliminates some of the unwanted drawbacks of the Millard technique. This new technique has the distinct advantage of maintaining better lip symmetry and not breaching anatomical landmarks of the lip. This technique is referred to as the straight line repair and is easy to teach and the results are reproducibleItem A business analysis methodology(2008-03-06T07:06:46Z) Bachoo, AvsharnSynopsis Business analysis is defined as the process in which business needs are identified and solutions proposed. This process is regarded as one of the most important parts of systems development because no other part is more difficult to rectify later. However, current business analysis methodologies are inadequate because they are at a too high level and only address portions of the complete business analysis process. In particular, the lack of clear objectives, relevance and outcomes of the phases make business analysis methodologies inadequate. Moreover, activities, techniques and tools not mapped to those phases are also problematic. The aim of this research was to develop a business analysis methodology for business analysts in the South African financial services environment. The intentions were to identify the phases, as well as objectives, relevance and outcomes for each of these phases. Furthermore, this research intended to identify appropriate activities, techniques and tools to address the objectives of each phase of a methodology. This was done by presenting a literature review of previous research relating to business analysis methodologies. For information gathering, 45 participants (comprising of business analysts, project managers, IS managers and CIOs) contributed to this research, 22 of whom were interviewed individually while 23 participated in focus group interviews. The data from each of these methods was analysed independently and did not influence or feed into any of the other methods. Once the individual interviews and focus group interviews had been transcribed, content analysis and analysis within and between interviews (Merriam, 1998; Strauss, 1987) was used to analyse the information gathered independently. The phases of a business analysis methodology identified by the research are the: • feasibility phase; • business case phase; • analysis and design phase; and • post-implementation evaluation phase. Objectives, relevance and outcomes of these phases were also identified. In addition, activities, techniques and tools were mapped to each of these phases.Item Closure of tailings facilities: Current practice review and guidelines for success(2006-11-17T10:17:16Z) Mark, RobinsThis research project has been prepared to satisfy the requirements of the University of the Witwatersrand, Faculty of Engineering and the Built Environment for the degree of Master of Science (Civil) in Geotechnical Engineering and Materials (50/50). Contained within the project is a review of international past and current tailings facility closure techniques. Guidelines and minimum requirements for successful closure have been developed and are presented.