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Modelling and control of combustion in a high velocity air flame (HVAF) thermal spraying process

  • Authors: Barth, Dominic
  • Date: 2010
  • Subjects: Metal spraying , Combustion
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:9644 , http://hdl.handle.net/10948/1266 , Metal spraying , Combustion
  • Description: Thermal spraying is a technology, which is used for coating of components and structures in order to achieve certain tribological characteristics, or for protection against corrosion, excessive temperature and wear. Within thermal spray, there are processes, which utilise combustion of liquid fuel to obtain high velocities flows providing, therefore, good adhesion of coating materials to substrates. These include High Velocity Oxygen Flame (HVOF) and High Velocity Air Flame (HVAF) process, of which the former one is widely used as it has been developed for at least two decades, while HVAF is less common. However, some studies indicate that HVAF has a number of advantages over HVOF, including the economic benefits. The thermal spray gun, based on the HVAF process, has been developed before, but the system was controlled manually. Therefore, there is a need to develop a fully automated controller of an HVAF thermal spray system. Process control of thermal spraying is highly complex as it involves simultaneous control of a number of processes, including; ignition process, combustion process, spraying material melting, as well as control and monitoring of auxiliary equipment. This paper presents the development of a control system for an HVAF thermal spray system, based on a Microchip PIC microcontroller. The designed control system was applied for controlling of thermal spraying of carbides powders, and provided a reliable ignition and stable combustion process, powder feeding and all other functions of control.
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  • Date Issued: 2010

Addressing the idiosyncrasies of contemporary notation in recorder compositions, with specific references to unconventional symbols in Music for a bird by Hans-Martin Linde and Sieben Stucke fur altblokflote by Markus Zahnhausen

  • Authors: Bartle, Lynne
  • Date: 2009
  • Subjects: Musical notation , Musical notation -- Study and teaching , Musical notation -- History , Music -- 20th century
  • Language: English
  • Type: Thesis , Masters , MMus
  • Identifier: vital:8516 , http://hdl.handle.net/10948/920 , http://hdl.handle.net/10948/d1012065 , Musical notation , Musical notation -- Study and teaching , Musical notation -- History , Music -- 20th century
  • Description: This treatise provides recorder performers and teachers with a guide to understanding the unconventional notation symbols encountered in Music for a Bird by Hans-Martin Linde and Sieben Stücke Für Altblockflöte by Markus Zahnhausen. Given the context of the overall history of notation, it argues that the idiosyncrasies of the unconventional notation symbols encountered in the recorder repertoire of contemporary composers such as Linde and Zahnhausen are by no means an anomaly. Throughout history, notated scores have functioned merely as incomplete guides to the reconstruction and the realization of musical works. Along with the decoding of these instructions, a host of acculturated meanings have always been taken for granted on the part of the writers of such guidelines. In the light of the modernist crisis and the resultant exacerbation of the gulf between composers and their audience, however, it would seem that the need for such acculturated intervention is greater then ever before. This treatise serves to bridge the gulf between the works of Linde and Zahnhausen on the one hand, and the average performer and teacher of the recorder on the other, by offering an analysis both of the meaning of the unconventional symbols these works contain as well as of the method according to which they should be executed on the recorder.
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  • Date Issued: 2009

Sustainable training support framework for the wind power industry in South Africa

  • Authors: Barton, Cayleigh Ann
  • Date: 2015
  • Subjects: Wind power industry -- South Africa Wind power industry -- Technological innovations , Energy development Renewable energy sources
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: http://hdl.handle.net/10948/50020 , vital:41985
  • Description: South Africa has emerged as one of the most important renewable energy markets as reflected by the USD 5.5 billion invested in South Africa in 2014 (Merger’s Alliance, 2015). As the opportunity exists for South Africa to take advantage of its above average natural wind resources, the main purpose of the case study research effort was therefore to develop a theoretical sustainable training framework in support of the rapidly growing wind power industry in South Africa. The proposed location for a sustainable training support framework is at the NMMU Business School and Leadership Academy, strategically located in the Eastern Cape. In addition, the NMMU Business School and Leadership Academy has satellite offices all around South Africa, thus creating accessible training and education solutions to most parts of the country. The case study research approach was qualitative in nature, thus providing valuable insight into the case study phenomenon. The researcher focused on a single context, namely the wind power industry in South Africa, and within a single case of the establishment of a sustainable training support framework at the NMMU Business School and Leadership Academy. The embedded, multiple units of analysis comprised of a purposive sample of strategic individuals operating within the South African wind power sector, socio-economic development, education and training industries. In staying within the research design, the case study made use of an in-depth interview process in order to address the research propositions of the case study. The investigative interview questions were fully supported by secondary sources of information. The case study provided valuable insight into the unique South African wind power industry setting, with a focus on education and training in line with the REIPPPP minimum threshold and targets for socio-economic development and job creation. The researcher experienced a lack of responses from industry experts who were contacted for interviews. This lack of response could be considered as a limitation in validating the outcome of the study. The South African wind power industry is one of the most thriving markets in the world (Merger’s Alliance, 2015) and due to its fledging nature; research on the topic under discussion is not readily available. Thus, the research effort provided relevant information regarding the unique setting of the South African wind power industry and added value through the proposition of a sustainable training support framework strategically located at the NMMU Business School.
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  • Date Issued: 2015

Perspectives of teachers on the problem of child sexual abuse in a squatter camp

  • Authors: Bashman, Lindelwa Edna
  • Date: 2008
  • Subjects: Child sexual abuse -- South Africa -- Port Elizabeth , Sexually abused children -- South Africa -- Port Elizabeth
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:9537 , http://hdl.handle.net/10948/684 , Child sexual abuse -- South Africa -- Port Elizabeth , Sexually abused children -- South Africa -- Port Elizabeth
  • Description: Child sexual abuse is a worldwide phenomenon that takes a major toll in squatter camps in South Africa. The conditions under which the squatters live promote and aggravate the abuse. Sadly, the victims hit hardest by the abuse are the children. The negative effects caused by the abuse lead to problems in the educational tasks of these children. This study proposes that teachers can play a significant role in assisting them to overcome their problem. The aim of this study was to: • investigate the perceptions of teachers of the problem of the sexual abuse of children coming from squatter camps; • empower teachers with strategies that will help to alleviate the problem; and • formulate some recommendations on dealing with the situation in the classroom. The literature was reviewed with the aim of substantiating a compact theoretical basis for the study. Various aspects were discussed, such as • the different definitions of child sexual abuse; • short- and long-term effects of the abuse; and • contributory factors of child sexual abuse. This study followed a qualitative design, which is interpretive, naturalistic, descriptive, holistic and exploratory in nature. The participants, chosen purposefully for this study, were ten teachers, teaching children coming from a squatter camp in the Motherwell Township of Nelson Mandela Bay. Themes that emerged from the transcripts of the interviews were: • Sexual abuse has a negative effect on children and causes them to develop problems. • Teachers can play a significant role in assisting learners who are sexually abused. • There are various reasons why sexual abuse is prevalent in squatter camps. The recommendations made are based on the findings of this study and propose to empower teachers so that they will be able to make a difference in the lives of their abused learners.
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  • Date Issued: 2008

Policies, procedures and practices contributing to tensions between labour and management

  • Authors: Basson, Jerome Godfrey
  • Date: 2010
  • Subjects: Labor laws and legislation -- South Africa , Human capital -- South Africa , South Africa -- Politics and government , South Africa -- Constitution
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:9427 , http://hdl.handle.net/10948/1267 , Labor laws and legislation -- South Africa , Human capital -- South Africa , South Africa -- Politics and government , South Africa -- Constitution
  • Description: The Constitution of the Republic of South Africa guarantees the right of education to all citizens of the country. The Eastern Cape Department of Education went a step further by adopting a vision to ensure quality public education that will result in the positive transformation of all schools. Education is therefore a very important part of the life of any society and needs to be protected at all costs. It is therefore important that all obstacles in the way of providing quality public education be removed. It is no secret that the Eastern Cape Department of Education has had a number of battles with some of its social partners. These battles have negatively impacted on the education system. This Department also received the largest slice of the taxpayers’ money. It is time to take serious steps to halt the waste of time and resources. It is against this background that this study wanted to consider policies, procedures and practices that generated tension between the management and labour in the Eastern Cape Department of Education. It is my belief that if tension between the different social partners can be reduced, we would have gone a long way in achieving the vision of the Department of Education. The research methodology that was followed for this study comprised the following: • Literature was reviewed that dealt with labour relations and human resources. • A questionnaire was designed to collect information from the different participants. • The information in the questionnaire was incorporated into the main study where findings were identified and recommendations were formulated.
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  • Date Issued: 2010

Pre and post computerized radiography film reject analysis in a private hospital in Kenya

  • Authors: Batuka, Nabawesi Jennifer
  • Date: 2011
  • Subjects: Radiography, Medical -- Digital techniques
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:10075 , http://hdl.handle.net/10948/1574 , Radiography, Medical -- Digital techniques
  • Description: The production of good quality radiographs is a complex process, given the high level of image quality required (Sniureviciute & Adliene, 2005: 260). Exposure of patients to x-rays, a factor in the production of quality radiographs also entails a risk of radiation injury. In 2006, computerized radiography (CR) was introduced at The Nairobi Hospital to try and reduce the film reject rate, decrease repeats, reduce financial costs of consumables like x-ray films and processing chemicals. However, to date, no formal film reject analysis has been conducted at The Nairobi Hospital. Four years after the incorporation of CR, there is apparently, still a significant number of film rejects, implying operational costs may still be high. The cause of film rejects and overall reject cost is not known. This has led to the research question: “Has the film reject rate in the A & E x-ray unit at The Nairobi Hospital reduced following incorporation of CR?” A quantitative, retrospective, descriptive study involving a reject film analysis of rejected radiographs in the Accident and Emergency (A&E) x-ray unit in the Nairobi Hospital, Kenya was conducted. The researcher collected data for a period of 6 months between 2/12/07 and 28/05/08 using a purpose-designed data collection form. All rejected x-ray films during the study period were included. Capture and analysis of the collected data was completed by the researcher using SPSS 10 and EPINFO computer packages. Permission to conduct the study was obtained from The Nairobi Hospital Education Committee and due consideration to patient and radiographer confidentiality was maintained throughout the study. A total of 851(2.5 percent) x-ray films were collected during the study period. Four hundred and fourteen (2.6 percent) radiographs and 437 (2.5 percent) radiographs were rejected prior to and after the incorporation of CR respectively. Chest radiographs were the most frequently rejected accounting for 277(66.9 percent) and 123 (28.1 percent) prior to and after the incorporation of CR respectively. The most frequently rejected film size was 35x35cm prior to the incorporation of CR (61.6 percent) and 26x35cm film size after the incorporation of CR (91.3 percent). The most frequent cause of film rejects was radiographer causes both prior to and after the incorporation of CR accounting for 496 (58.3 percent). The film reject rate did not significantly reduce after the incorporation of CR, suggesting that there are other factors which contribute to reject rate, other than CR. The study also shows that higher film consumption does not necessarily lead to high reject rates. The percentage value on annual rejects did not change after the incorporation of CR and a demonstrated increase in the annual cost of purchasing x-ray films was attributed to an increase in annual consumption after the incorporation of CR, and also to the higher cost of digital x-ray films. Despite some identified limitations to this study, some recommendations, which included conduction of regular reject analyses and regular continuing professional development with respect to radiographic technique amongst others, were suggested.
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  • Date Issued: 2011

Development of tourism diploma in IsiXhosa-speaking students' academic literacies : a multilingual intervention

  • Authors: Batyi, Thokozile Thelma
  • Date: 2014
  • Subjects: Education, Bilingual -- South Africa -- Port Elizabeth , Language and languages -- Study and teaching -- South Africa -- Port Elizabeth , Education -- Study and teaching (Higher) -- South Africa -- Port Elizabeth , Multilingual communication -- South Africa -- Port Elizabeth
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:8369 , http://hdl.handle.net/10948/d1020194
  • Description: In this study, it is argued that a bi/multilingual instruction is extremely beneficial for bi/multilingual students in higher education in South Africa. Since the adoption of democracy in 1994, cultural and linguistic diversity has become the norm in classrooms at Nelson Mandela Metropolitan University in Port Elizabeth. The testing of bi/multilingual strategies in this study (i.e. translation and development of multilingual glossaries; code-switching by tutor and students during teaching and learning; code-meshing by students online; and reading, speaking and writing bilingually), is an attempt to pedagogically adapt the curriculum to students’ needs. The data was collected from students in their Tourism Communication tutorial. The study was conducted in order to demonstrate that students benefit from bilingual pedagogies, which mobilise isiXhosa and English as languages of learning. Data was collected from tests, a questionnaire and interview, summaries, online discussions, written assignments and reflective journals in order to determine to what extent students’ performance was enhanced by bilingual tuition.
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  • Date Issued: 2014

Investigating public participation strategies in the provision of low-income housing in the Buffalo City Metropolitan Municipality

  • Authors: Batyi, Thomas
  • Date: 2017
  • Subjects: Municipal government -- South Africa -- Eastern Cape -- Citizen participation , Municipal services -- South Africa -- Eastern Cape -- Citizen participation Low-income housing -- South Africa -- Eastern Cape Public housing -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10948/14543 , vital:27749
  • Description: This study investigates the public participation strategies in the provision of low –income housing. The purpose is to look at the effectiveness of the public participation strategies. In order to achieve this goal, it was necessary to review literature on public participation to advance the argument that public participation is an integral part of local government and the community at large. Currently, public participation permeates all legislation, impacting on local government in South Africa. It enhances individual and group esteem and enables municipal functionaries to understand crucial issues that serve as an impetus for policymaking. A supportive objective was to identify challenges that may be experienced by the Buffalo City Metropolitan Municipality with public participation in low-cost houses. The study adopted qualitative data collection instruments, which were used to collect data. The face-to-face interviews with the total sample of this study consisted of fourteen (14) participants comprising six (6) municipal officials, (3 officials from each of the Public Participation and the Integrated Development Units) and four (4) ward councillors and committee members, one (1) each from wards 1, 6, 46 and 47. For the purpose of this study, purposive (non-probability) or judgemental sampling was used. The qualitative data was analysed thematically using coding and categorising data into themes. The findings of this study revealed that there is a lack of public participation by the local communities in development projects. Also, ward committees do not have a platform to participate at the representative forums and during the IDP/budget hearings. In this regard, the study made recommendations on the participation strategies in order to tackle the challenges faced in the provision of low-income housing.
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  • Date Issued: 2017

Property development in Mthatha: an interactive framework

  • Authors: Bavu, Sonwabile
  • Date: 2017
  • Subjects: Real estate development -- South Africa -- Eastern Cape Land use -- South Africa -- Eastern Cape , Sustainable development -- South Africa
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10948/14553 , vital:27761
  • Description: Property development (PD) is basically driven by the need or demand from the people. Sustainable property development has emerged in response to a global problem – and the need to maintain environmental integrity, according to Gurry (2011) cited by Botha (2013: 7). Keeping and Shiers (2004) state that property development, as a whole, has to balance social, economic and environmental needs. Emanating from the above, any successful development project must offer investors security, infrastructure and efficiency and should also put the needs of citizens at the forefront of all its planning activities. Availability of land, existing infrastructure, availability of finance, economic conditions, political influence and corruption always influence growth of property development in any area. This study aims to identify factors that contribute to lack of property development in Mthatha. Data collected shows that the challenges sometimes lead to failure and delays of the development. The purpose of this study is to identify these challenges, investigate the available literature, consider what has been done so far to address these challenges and make recommendations. It is essential to understand the state of the town and perceptions of the people in the area dealing with Property Development. Mthatha is the main focus of the study because of the perceived number of failed and delayed property development initiatives. The primary and secondary data collected provide the basis for understanding challenges that lead to such failures and delays. This research was conducted by means of a review of the related literature and an empirical study. The empirical study was conducted using a quantitative statistical approach by distributing research questionnaires to members falling within the sample population. The primary objective of the study is to develop a framework for successful implementation of property developments in Mthatha. The study’s findings reveal shortcomings which contribute to the study’s identified problems relating to property development in Mthatha, namely: decaying infrastructure, shortage of land, implementation of the IDP, availability of finance to promote real estate developments, political influence and corruption. Wikipedia defines Property Development as a “multifaceted business encompassing activities that range from the renovations and release of existing buildings to the purchase of land and the sale of improved land or parcels to others”. Harvey and Jowsey (2004), as cited by Botha (2013: 5), define Property Development as a process that involves changing or intensifying the use of land to produce buildings for occupation.
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  • Date Issued: 2017

An evaluation of UPLC technology for the simultaneous analysis of actives in a multi-active drug

  • Authors: Bawjee, Janita
  • Date: 2011
  • Subjects: High performance liquid chromatography
  • Language: English
  • Type: Thesis , Masters , MTech
  • Identifier: vital:10384 , http://hdl.handle.net/10948/d1008407 , High performance liquid chromatography
  • Description: The evaluation of the potential to use Ultra Performance Liquid Chromatography (UPLC) for the simultaneous quantification of all the actives in a multi-active tablet is described in this work. Part of the evaluation was to ensure that the necessary regulatory requirements were adhered to by ascertaining that an analytical method is suitable for a specific purpose through analytical method validation for the specific multi-active tablet. The UPLC method was also tested for the analysis of similar products, namely tablet formulations that contain similar active ingredients in the same proportions but with an additional active ingredient. A method for the simultaneous determination of paracetamol, caffeine and codeine phosphate was developed using UPLC technology. The UPLC developed method was more efficient than the existing in-house HPLC method. The UPLC method was then validated in accordance to ICH and USP guidelines. The application of this UPLC method for the analysis of similar products containing paracetamol, caffeine, codeine phosphate and one extra active ingredient was very challenging. The low concentration of the additional component, differences in sample matrix and differences in formulations added to the challenges. The direct application for the analysis of products Y and Z was not successful; however the method could be used as a platform for further research. A cost comparison between the UPLC and HPLC methods showed the UPLC method to be more cost effective. Thus, while maintenance costs are higher for the UPLC instrument, column costs are comparable to HPLC columns, but solvent and waste disposal charges decrease considerably due to lower solvent use. The reduction in instrument time dramatically improves the cost effectiveness of UPLC over HPLC due to a concurrent reduction in analyst time requirement. The results of this study show that the analytical costs associated with the analysis of multi-active drugs using HPLC procedures can be reduced substantially by the CONFIDENTIAL INTELLECTUAL PROPERTY OF ASPEN PHARMACARE implementation of UPLC technology. The hypothesis that the enhanced chromatographic power of UPLC can be leveraged to provide faster analysis times hence increased product throughput rates, and lower operating costs for the analysis of multi-active drugs was accepted. These advantages were achieved whilst meeting all regulatory requirements for analytical methods as required by regulatory bodies.
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  • Date Issued: 2011

Savings behaviour in selected poor townships of the Kouga municipal district

  • Authors: Baxter, Chad
  • Date: 2012
  • Subjects: Saving and investment -- South Africa , South Africa -- Economic policy
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:9009 , http://hdl.handle.net/10948/d1014540
  • Description: This study considers the nature of savings behaviour amongst low income earners residing in the township areas of Kouga Municipal District. It reflects on the popularity and persistence of informal savings and credit associations, also known as stokvels, in these communities in the face of an increase in the availability of formal savings products. This study argues that despite financial deepening taking place within the South African economy, the popularity and widespread usage of stokvels can largely be attributed to the lack of appropraite formal products available for low income earners. This study does not conclude that the usage of informal savings products results in increased savings behaviours amongst this group, but it does conclude that they provide a suitable mechanism in which savings can take place.
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  • Date Issued: 2012

The link between economic development programmes (RDP & GEAR) and poverty reduction : (Airport Valley as an illustrative case)

  • Authors: Bayti, Thelma Thokozile
  • Date: 2009
  • Subjects: Economic assistance, Domestic -- South Africa -- Eastern Cape , Poverty -- Government policy -- South Africa -- Eastern Cape , Economic development projects -- South Africa -- Eastern Cape , Poverty -- Economic aspects -- South Africa , Poverty -- Social aspects -- South Africa
  • Language: English
  • Type: Thesis , Masters , MPhil
  • Identifier: vital:8225 , http://hdl.handle.net/10948/921 , Economic assistance, Domestic -- South Africa -- Eastern Cape , Poverty -- Government policy -- South Africa -- Eastern Cape , Economic development projects -- South Africa -- Eastern Cape , Poverty -- Economic aspects -- South Africa , Poverty -- Social aspects -- South Africa
  • Description: The key debates after apartheid have been on the successes and shortcomings of the social and economic policies that were adopted after apartheid. The ANC government decided to approach poverty reduction by closing the inequality gap between racial groups in the country. It planned to provide services that would improve the poor people’s lives and also create employment to sustain development. To provide the necessary services, the government formulated two broad, but linked macroeconomic policies namely: the RDP and GEAR which focused on the demand and supply side respectively (Venter and Landsberg (2006). This indicated the importance with which the people’s welfare and growth were regarded by the South African government. It indicated that the government believed in pro-poor growth. The purpose of this study was to gain better and deeper understanding about poverty reduction since the 1994 political transition, from the poor people of Airport Valley (in the Nelson Mandela Metropolital Municipality), who experience poverty from the real world. The study attempted to find out from these people if there was improvement in their lives since democratisation. This qualitative and quantitative study used three methods of collecting data namely: a questionnaire, interviews and observation. The results of the study suggest that there has been lack of commitment by RDP and GEAR, as the conditions under which the people live and therefore their standard of living have not improved. The study recommends that the government should speed up the process of service delivery at Airport Valley and also include the people in decision making about the future of Airport Valley.
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  • Date Issued: 2009

An exploration of a London Church Congregation's perceptions of homosexuality

  • Authors: Beattie, Cora Rebecca
  • Date: 2011
  • Subjects: Conflict management -- Religious aspects -- Christianity , Interpersonal conflict -- Religious aspects -- Christianity , Church controversies , Homosexuality -- Religious aspects -- Christianity , Homosexuality in the Bible
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:8171 , http://hdl.handle.net/10948/1640 , Conflict management -- Religious aspects -- Christianity , Interpersonal conflict -- Religious aspects -- Christianity , Church controversies , Homosexuality -- Religious aspects -- Christianity , Homosexuality in the Bible
  • Description: The following treatise focuses on the ongoing conflict within the church regarding the issue of homosexuality. It is an important issue that has divided both churches and denominations and it continues to cause hurt in both the lives of Christians and non-Christians alike, both straight and gay. The popular position seems to be that the church, and Christians in general, are homophobic and believe that Christianity and homosexuality are not compatible. This research is a case study and focuses on a church in London. The research was carried out to discover whether this position, often portrayed by the media, was true of this church. It also sought to discover whether theories of conflict management and in particular John Burton’s theory of basic human needs could offer insight and alternative approaches in future discussions. The findings of this research offer hope in the situation in that they show this particular church is not homophobic, nor do the majority believe homosexuality and Christianity to be incompatible.
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  • Date Issued: 2011

Registered nurses' perceptions of factors causing stress in the intensive care environment in state hospitals

  • Authors: Beau, S P
  • Date: 2006
  • Subjects: Intensive care nursing -- South Africa , Nurses -- Job stress -- South Africa , Stress management -- South Africa
  • Language: English
  • Type: Thesis , Masters , MCur
  • Identifier: vital:10044 , http://hdl.handle.net/10948/457 , Intensive care nursing -- South Africa , Nurses -- Job stress -- South Africa , Stress management -- South Africa
  • Description: The complex environment of an intensive care unit is associated with a considerable amount of stress. Intensive care nurses are confronted daily with increasing work demands, emanating from the growing numbers of critically-ill patients; the introduction of highly sophisticated technologies in the intensive care environment; increasing competition between health care institutions; increased work loads; and limited career opportunities caused by, among other things, budget cuts by the government (Janssen, De Jonge & Bakker, 1999:1360). Research has shown that such stressors can result in mental, physical and behavioural stress reactions among nurses (Demerouti, Bakker, Nachreiner and Schaufeli, 2000:454). The objective of this study is to explore and describe registered nurses’ perceptions of factors causing stress in intensive care environments of state hospitals. The main purpose of the study is to develop guidelines for a stress management programme, to assist registered nurses to cope with the stressors in an intensive care environment. The research design is placed within a quantitative, explorative and descriptive contextual framework. Validity and reliability in testing and evaluating the research questionnaire are discussed, as well as the ethical and legal considerations relating to this research study. Findings of the research study will be utilized to assist the researcher in developing guidelines for a stress management programme to assist registered nurses in coping with stress in an intensive care environment
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  • Date Issued: 2006

Optimisation of glass scoring operation

  • Authors: Bechoo, Durvesh Sookraj
  • Date: 2016
  • Subjects: Glass -- Mechanical properties , Glass manufacture
  • Language: English
  • Type: Thesis , Masters , MEng
  • Identifier: http://hdl.handle.net/10948/9283 , vital:26559
  • Description: The economic crisis and prior recession made a huge dent in many industries. Companies want a cheaper manufactured product with same quality to satisfy the customer in order be competitive yet profitable. Shatterprufe is a company that produces automotive glass. The company has a vast number of products and experience short production run lengths because of its order intake from customers. These short production run lengths require accurate setup to have a repeatable and stable process. An incorrect setup will produce a high scrap rate on production runs. Glass being very brittle and machining it incorrectly results in flaws, breakages or edge stresses that lead to latter process failures. The scoring operation of glass is key to achieve good edge quality to prevent such defects. The correct tools and machine parameters influence good edge quality during the setup procedure. Due to the process having many variables it is difficult to have a stable process and a repeatable stable process. This research will analyse the tool, parameters of the tool and machine parameters to achieve best edge quality and correlating these parameters that will lead to a repeatable stable process. An experimental analysis was conducted on 2.1mm and 2.5mm thick glass. These thicknesses are used predominantly at Shatterprufe automotive glass manufacturing company. The first sample and last sample was analysed during a production run. An average production run length is 36 pieces of glass. The edge quality was seen under a microscope and the fissure depth was measured. To achieve ideal edge quality, the fissure depth must be 15-20% deep of the glass thickness. A fissure is a crack propagated during the scoring of glass. A carbide wheel is used to score the glass. The carbide wheel parameters were varied being the wheel angle and wheel diameter. A 145 degree-4.1mm wheel, 145degree-5.6mm wheel and a 155 degree- 4.1mm wheel was used. The following relationships where observed being the wheel diameter and fissure depth. An increase in wheel diameter resulted in an increase in fissure depth but decreases the wheel life as the wheel becomes blunt. There was inconsistency on fissure depth with the larger diameter wheel. An increased in wheel angle from 145 degree to 155 degree promoted flaws in the glass. Larger wheel angles work better on glass thicknesses of 4-5mm as currently used in the Shatterprufe Struandale Company. An investigation on pressure variation in the pneumatic system was analysed using a pressure transmitter. The pressure transmitter measured the pressure per second versus the set pressure and recorded this data on a data logger. There was no pressure variation in the pneumatic system that can influence poor glass edge quality. A load cell analysis will investigate the physical applied pressure on the glass versus the set pressure. This analysis was to determine the relationship between set versus actual on the glass. It will indicate any mechanical fault. A mechanical fault could be a loose coupling or linkage that can influence the fissure depth. A direct proportional relationship was achieved between the set pressure versus the load cell readings. This indicates no mechanical fault on the system.
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  • Date Issued: 2016

Retention and dropout rates for a sample of national higher certificate students in the school of accounting

  • Authors: Beck, Richard Alan
  • Date: 2011
  • Subjects: College dropouts -- South Africa , Learning ability , Education, Higher -- South Africa , Accounting -- Study and teaching
  • Language: English
  • Type: Thesis , Masters , MTech
  • Identifier: vital:8971 , http://hdl.handle.net/10948/1408 , College dropouts -- South Africa , Learning ability , Education, Higher -- South Africa , Accounting -- Study and teaching
  • Description: Higher Education retention rates in South Africa are among the lowest in the world. At the Nelson Mandela Metropolitan University, a trend has been noted for National Higher Certificate (NHC) students within the Faculty of Business and Economic Science’s School of Accounting. Dropout rates have increased and graduation rates have declined for students studying NHC programmes. Retention and dropout studies have rarely been undertaken for accounting students in higher certificate or diploma programmes, which provided the motivation for this study. The study aimed to determine the dropout and retention rates of NHC students and to identify the demographic and other characteristics of dropout students relative to those who persist with their studies. Furthermore, the study identified potential barriers to academic success in the sample. An exploratory descriptive research approach was adopted to achieve the general and specific aims of the study. Data were obtained from Management Information Services about NHC dropout students and students continuing with their studies for the period 2005 to 2009. Furthermore, information was gathered for separate samples from a Language Questionnaire and the Learning Enhancement Checklist (LEC) regarding barriers to student success. High dropout rates were found in that more than half of the students dropped out. Correspondingly, the retention rates were low. The findings for the gender, cultural and language groups were interesting but no definitive conclusions could be reached regarding trends related to student dropout and retention in relation to these biographical variables. Performance in Financial Accounting I and II yielded interesting trends. Students at risk for dropping out obtained a mark of 50 percent or less on average for Financial Accounting I and 40 percent or less for Financial Accounting II. The analysis conducted to determine barriers to student success revealed that students did not prepare adequately for lectures; experienced certain difficulties in lectures, tests and VIII exams; found it difficult to manage their studies and time; and experienced financial and psychological problems. The findings of the study can be used to identify students who might drop out at an early stage. Furthermore, the findings can guide the nature of the development and support that NHC students need to succeed. The limitations of the study are noted and suggestions are made for further research into the factors related to student dropout and retention in the field of accounting.
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  • Date Issued: 2011

A critical analysis of the definition of gross income

  • Authors: Beck, Tracy Geraldine
  • Date: 2008
  • Subjects: Income tax -- Law and legislation -- South Africa -- Interpretation and construction , Capital gains tax -- South Africa , Income tax -- South Africa
  • Language: English
  • Type: Thesis , Masters , MTech
  • Identifier: vital:8977 , http://hdl.handle.net/10948/805 , Income tax -- Law and legislation -- South Africa -- Interpretation and construction , Capital gains tax -- South Africa , Income tax -- South Africa
  • Description: Income tax is levied upon a taxpayer’s taxable income. Various steps are taken in order to arrive at the taxpayer’s taxable income. The starting point when calculating taxable income is determining the taxpayer’s ‘gross income’. ‘Gross income’ is defined in terms of section 1 of the Act. Various terms within the gross income definition are not clearly defined, except in the case of a ‘resident’. Even in the case of the definition of a ‘resident’, the aspect of ‘ordinarily resident’ is not defined and nor is the ‘place of effective management’. The following components fall within the definition of ‘gross income’: • The total amount in cash or otherwise; • received by or accrued to, or in favour of, a person; • from anywhere, in the case of a person who is a resident; • from a South African source (or deemed source), in the case of a non-resident; • other than receipts or accruals of a capital nature. The ‘total amount’ in ‘cash or otherwise’ is the first step when determining the taxable income of a taxpayer for a particular year of assessment. Gross income only arises if an amount is received or has accrued; this amount need not be in the form of money but must have a money value. The next component, ‘received by or accrued to’, is related to time and implies that a taxpayer should include amounts that have been ‘received by’, as well as amounts that have ‘accrued to’ him during the year of assessment. ‘Resident’ and ‘non-resident’ unlike the other components, are defined in terms of section 1 of the Income Tax Act. There are two rules used to determine whether natural persons are residents, these are: • To determine whether natural persons are ‘ordinarily resident’; or • where the natural person is not an ‘ordinarily resident’, the ‘physical presence test’ will be applied. ‘Source’ means origin and not place; it is therefore the ‘originating cause of the receipt of the money’. There is no single definition for the word ‘source’ as circumstances may differ in various cases. The facts of each case must be analysed in order to determine the actual source of income for that particular case. The last component of the definition of ‘gross income’ is the exclusion of ‘receipts and accruals of a capital nature’. The Act does not define the meaning of ‘capital nature’ but does indicate that receipts or accruals of a capital nature are, with certain exceptions, not included in ‘gross income’. Receipts or accruals that are not of a capital nature is known as ‘revenue’ and subjected to tax. This study is primarily aimed at an examination of court cases related to the various components falling within the definition of ‘gross income’.
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  • Date Issued: 2008

The influence of soil properties on the growth and distribution of Portulacaria Afra in subtropical thicket, South Africa

  • Authors: Becker, Carina Helene
  • Date: 2013
  • Subjects: Portulacaria afra -- South Africa , Plant conservation -- South Africa , Shrubs -- South Africa
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:10753 , http://hdl.handle.net/10948/d1013046
  • Description: Subtropical Thicket is the dominant vegetation biome in the Eastern Cape, and extends through to parts of the Western Cape. It is dominated by Portulacaria afra (spekboom), a woody succulent plant recognised for its importance as an ecosystem engineer and its carbon sequestration potential. Due to excessive grazing from domestic stock, spekboom has been completely removed from some areas. The Subtropical Thicket Restoration Programme (STRP) initiated a large scale restoration programme of planting spekboom cuttings in these degraded areas. Their efforts have been met with varying levels of success and improvement of the programme relies on continuous monitoring and scientific evaluation. I investigated the influence of selected soil properties on spekboom growth, mortality and landscape distribution, at both restoration sites and natural intact areas, and through experiments. Site or location was the most important factor influencing spekboom success at restoration plots, whereby sites in the eastern end of spekboom distribution perform better. Moving westwards slope orientation emerged as an important factor, whereby north facing slopes are preferred by spekboom. Although high levels of soil salinity (NaCl) restricted spekboom growth and affected its health, it could tolerate the levels it was exposed too. Soil pH, above 7, and phosphorous concentration, above 70 mg.kg-1, were the only limiting factors to spekboom survival found in the restoration sites. This preference for acidic soils was mirrored in intact Thicket. However in general, soil is not a major factor influencing spekboom growth and distribution, and spekboom is tolerant of a wide range of soil conditions. Spekbooms constraint is most likely a function of climate, which varies greatly across the biome. This study answered some vital questions regarding the possible influence of soil in spekboom growth and distribution. It disapproved the theory that a catena effect may be responsible for the lack of spekboom growing in bottomland areas. The study also indicates and supports the versatility of spekboom as a plant for restoring degraded lands across a range of different geologies and soil types. To maximise spekboom survival rates, restoration efforts should be focussed towards the eastern end of its distribution and to avoid planting in soils with pH levels higher than 7.
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  • Date Issued: 2013

A critical analysis of the influence of the performance management system used in the financial department at General Motors South Africa

  • Authors: Beckett, Yasmien
  • Date: 2005
  • Subjects: Performance -- Management , Employees, Rating of , Organizational effectiveness , Finance departments , General Motors (South Africa)
  • Language: English
  • Type: Thesis , Masters , MTech
  • Identifier: vital:10925 , http://hdl.handle.net/10948/155 , Performance -- Management , Employees, Rating of , Organizational effectiveness , Finance departments , General Motors (South Africa)
  • Description: Recently, organisations have been faced with challenges like never before. Increasing competition from businesses across the world has meant that businesses must be more careful about the choice of strategies to remain competitive. This situation has placed more focus on organizational effectiveness in that systems and processes be applied in the right way to the right things to achieve results. All of the organisational processes must continue to be aligned to achieve the overall results desired by the organisation for it to survive and thrive. Performance management is an ongoing process that should reflect the current and emerging business challenges, as well as the company’s values about performance and careers. As the business and workforce change, the performance management process should be modified to ensure that the process and tools remain congruent with organisational values and priorities. The objective of this study was to identify the influence of the current performance management system, in the Finance department at General Motors South Africa, as a facilitation tool in aiding or assisting management in achieving individual and departmental goals. To achieve this objective a comprehensive literature study was performed to determine the views on performance, and on performance management systems. A questionnaire was designed based on the guidelines in the literature study, in order to establish the extent to which the organisation manages performance. The researcher used the random sampling method of selection and distributed the questionnaire to eighty one potential respondents via mail and electronic e-mail. Forty one completed questionnaires were returned and these were processed and -iiianalysed using Microsoft Office Excel 2003, running on the Windows XP suite of computer packages. The respondent’s opinion obtained from the questionnaires were compared with the guidelines provided by the literature study in order to identify shortcomings of the influence that the performance management system has on the achievement of individual and departmental goals at the selected organisation. It can be concluded from the respondent’s opinions that the greatest shortcomings of the current performance management system are the link between performance and reward, and commitment to the process in its totality. The other areas of concern are the lack of training and development, and the necessary resources required to achieve objectives. The study also indicates there is no overwhelming agreement that feedback, both positive and negative, takes place as the literature suggests. The following were the main recommendations and conclusions made: • Firstly, it is imperative that management undergoes training in the feedback and review process which is a critical element in the performance management cycle. • Secondly, to realise the benefit of increased employee effectiveness, management should undergo training to become more effective career coaches to promote a climate of continuous learning and professional growth. • Thirdly, the reward system should be reviewed, if management is committed to using pay as an incentive for desired levels and directions of performance. • Fourthly, management can set an example and build commitment for effective performance management and be leaders at all levels.
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  • Date Issued: 2005

Resilience in HIV/AIDS' adolescent headed families

  • Authors: Beeka, Hershilla A
  • Date: 2008
  • Subjects: Resilience (Personality trait) in adolescence -- South Africa -- Port Elizabeth , Children of AIDS patients -- South Africa -- Family relationships , Families, Black -- Research -- South Africa
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:9911 , http://hdl.handle.net/10948/922 , Resilience (Personality trait) in adolescence -- South Africa -- Port Elizabeth , Children of AIDS patients -- South Africa -- Family relationships , Families, Black -- Research -- South Africa
  • Description: HIV/AIDS has presented humanity with various challenges, one of which is the manner in which it has affected family structure and patterns. Parental illness and eventual death due to the HIV/AIDS pandemic is escalating. One of the major challenges of HIV/AIDS in southern Africa is the increase in the number of orphaned and vulnerable children. As a result new family forms are emerging such as the "skip-generation" family in which children or adolescent siblings head the family. It is anticipated that HIV/AIDS in South Africa will progressively increase the number of such families. During this time of profound family change, the family as an institution has remained remarkably resilient. The present study utilised the Family Resilience Framework and the Resiliency Model of Family Stress, Adjustment and Adaptation to explore and describe the resilience of HIV/AIDS’ adolescent headed families. A qualitative, exploratory-descriptive research design, which was assessed against Guba’s (1985) model of trustworthiness, was employed and the participants were sampled using non-probability purposive sampling. The Masizakhe Community Project volunteers (an AIDS Community Project in Kwazakhele, Port Elizabeth receiving support from the iThemba AIDS Foundation) assisted in identifying participants according to the predetermined inclusion criteria. The sample consisted of four female, adolescent heads of HIV/AIDS’ affected households, who volunteered at the Masizakhe Community Project and resided in Kwazakhele. The data that was collected via audio-recorded semi structured interviews were transcribed verbatim and subjected to Interpretive Phenomenological Analysis. Family resilience factors that emerged included intrafamilial strengths (family cohesion, organisation, hardiness, and adaptability); social support resources (especially from the community project, friends, and community members); family appraisal processes; and problem solving and coping strategies. Extended family support was partial and largely financial. The findings from this study provided insights into the resilience of adolescent-headed families; provided guidance for the development of intervention programmes to assist these families; and affirmed the existing strengths of the families. Furthermore, it has contributed to the research and literature on family resilience and formed the foundation for future research projects.
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  • Date Issued: 2008
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