Factors influencing international students' choice of enrolling at higher education institutions via the internet
- Authors: Yang, Ning
- Date: 2009
- Subjects: Internet marketing -- South Africa , Education, Higher -- Marketing , Internet in higher education -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9338 , http://hdl.handle.net/10948/1084 , Internet marketing -- South Africa , Education, Higher -- Marketing , Internet in higher education -- South Africa
- Description: As the competition increase in the Higher Education industry, marketing departments of Higher Education Institutions view students as consumers and market their institutions. At the mean time, universities around the world encourage their international offices to increase the foreign student enrollments. This research investigates the factors influencing international students’ choice of enrolling at Higher Educational Institutions (HEI) via the internet: international students’ Internet use to facilitate information search and decision making. This survey of international students from Nelson Mandela Metropolitan University (NMMU) explored the Internet’s role in marketing international education. Based on this exploratory research, NMMU educational institutions gain insights of online customer service for successfully recruiting students. The results show that prospective overseas students do indeed use the internet. Overall evaluation of the factors influencing the use of the internet for enrolling at HEIs was determined by four factors: namely, perceived usefulness, consumer involvement, perceived ease of use and opinion leadership.
- Full Text:
- Date Issued: 2009
- Authors: Yang, Ning
- Date: 2009
- Subjects: Internet marketing -- South Africa , Education, Higher -- Marketing , Internet in higher education -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9338 , http://hdl.handle.net/10948/1084 , Internet marketing -- South Africa , Education, Higher -- Marketing , Internet in higher education -- South Africa
- Description: As the competition increase in the Higher Education industry, marketing departments of Higher Education Institutions view students as consumers and market their institutions. At the mean time, universities around the world encourage their international offices to increase the foreign student enrollments. This research investigates the factors influencing international students’ choice of enrolling at Higher Educational Institutions (HEI) via the internet: international students’ Internet use to facilitate information search and decision making. This survey of international students from Nelson Mandela Metropolitan University (NMMU) explored the Internet’s role in marketing international education. Based on this exploratory research, NMMU educational institutions gain insights of online customer service for successfully recruiting students. The results show that prospective overseas students do indeed use the internet. Overall evaluation of the factors influencing the use of the internet for enrolling at HEIs was determined by four factors: namely, perceived usefulness, consumer involvement, perceived ease of use and opinion leadership.
- Full Text:
- Date Issued: 2009
Factors influencing job satisfaction
- Authors: Hansia, Bradley L
- Date: 2009
- Subjects: Job satisfaction
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8688 , http://hdl.handle.net/10948/1111 , Job satisfaction
- Description: The harassed boss who faces an office full of mutinous, recalcitrant staff every morning may not believe it, but half of South Africa’s employees love their jobs and their employers. That’s according to TNS Research Surveys, which recently released the results of a survey into employee wellbeing and commitment. TNS director Neil Higgs issued a caution, though: because of the tough economic times, employers are likely to be stuck with the malcontents among their staff for longer than they might like (Ferreira, 2009). From the above mentioned it can be deduced that there are many employees who are currently not satisfied with their jobs. This poses a danger for employers and their productivity, as an unsatisfied employee is likely to be an unproductive employee. Satisfied employees are likely to make a better contribution to the economic growth of this country as more drive and motivation will be shown in the workplace. In these tough economic times, those employees who are not satisfied with their jobs are less likely to find employment elsewhere as mentioned above. The main purpose of this research paper was to identify certain factors impacting on job satisfaction. The first step was to complete a literature study on the selected factors which impacts on job satisfaction. The factors selected were that of recruitment and selection, rewards offered by employers, personality of employees and leadership characteristics of superiors. The literature study revealed which methods to use in attempting to deal with the selected factors impacting on job satisfaction. Secondly, the views of staff in various departments and views of staff specifically in the Human Resources department of the selected company were asked various questions in an empirical study. These questions were based on the selected factors mentioned in the previous paragraph, this involved them completing questionnaires. v Based on the findings of the literature study and the empirical study, the last step was to make recommendations to the selected company on how to improve job satisfaction of employees. Recommendations were also made as to what to look for to make it easier in recruiting new employees, who are likely to have enhanced job satisfaction for the good of the company.
- Full Text:
- Date Issued: 2009
- Authors: Hansia, Bradley L
- Date: 2009
- Subjects: Job satisfaction
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8688 , http://hdl.handle.net/10948/1111 , Job satisfaction
- Description: The harassed boss who faces an office full of mutinous, recalcitrant staff every morning may not believe it, but half of South Africa’s employees love their jobs and their employers. That’s according to TNS Research Surveys, which recently released the results of a survey into employee wellbeing and commitment. TNS director Neil Higgs issued a caution, though: because of the tough economic times, employers are likely to be stuck with the malcontents among their staff for longer than they might like (Ferreira, 2009). From the above mentioned it can be deduced that there are many employees who are currently not satisfied with their jobs. This poses a danger for employers and their productivity, as an unsatisfied employee is likely to be an unproductive employee. Satisfied employees are likely to make a better contribution to the economic growth of this country as more drive and motivation will be shown in the workplace. In these tough economic times, those employees who are not satisfied with their jobs are less likely to find employment elsewhere as mentioned above. The main purpose of this research paper was to identify certain factors impacting on job satisfaction. The first step was to complete a literature study on the selected factors which impacts on job satisfaction. The factors selected were that of recruitment and selection, rewards offered by employers, personality of employees and leadership characteristics of superiors. The literature study revealed which methods to use in attempting to deal with the selected factors impacting on job satisfaction. Secondly, the views of staff in various departments and views of staff specifically in the Human Resources department of the selected company were asked various questions in an empirical study. These questions were based on the selected factors mentioned in the previous paragraph, this involved them completing questionnaires. v Based on the findings of the literature study and the empirical study, the last step was to make recommendations to the selected company on how to improve job satisfaction of employees. Recommendations were also made as to what to look for to make it easier in recruiting new employees, who are likely to have enhanced job satisfaction for the good of the company.
- Full Text:
- Date Issued: 2009
Factors influencing survivor qualities after downsizing
- Authors: Chipunza, Crispen
- Date: 2009
- Subjects: Downsizing of organizations -- South Africa , Organizational change -- South Africa , Cost control , Unemployment -- Psychological aspects
- Language: English
- Type: Thesis , Doctoral , DTech
- Identifier: vital:9381 , http://hdl.handle.net/10948/1219 , Downsizing of organizations -- South Africa , Organizational change -- South Africa , Cost control , Unemployment -- Psychological aspects
- Description: Today organisations all over the world have to cope with the ever-increasing rate of local and global change. Those in developing countries have to cope with the inefficiencies engendered by state-led economic, developmental and political strategies, such as new government regulations. These have had an impact on the management of human resources and are exemplified by an increasing adoption of strategies meant to reduce pressure on costs and margins. An increasing popular management response to these challenges has been to engage in some form of organisational restructuring such as downsizing. Often employees who remain (survivors) after downsizing are not given much attention, yet the achievement of new strategic goals depends on the survivors having positive attitudes, relentless commitment and high motivation. Research indicates that employees who are motivated and committed contribute vastly to the financial-bottom-line of the organisation. Therefore, downsizing organisations should continuously search for ways to increase such qualities among their survivors. The objective of this study was to identify the factors that influence the attitudes, commitment and motivation of survivors in a developing economy with a volatile environment. To achieve this objective, a theoretical survivor quality model was presented. In order to present the model, firstly, a literature survey on the importance of survivor quality in terms of attitudes, commitment, and motivation among survivors was conducted. Secondly, literature survey pertaining to the drivers of survivor quality was done, and thirdly, literature dealing with strategies to deal with survivor quality was surveyed. The theoretical survivor quality model was used to compile the research instrument that determined the attitudinal, commitment and motivational levels of survivors, how the three constructs are related after downsizing, as well as the factors influencing the observed levels. The questionnaire was randomly distributed among survivors in the selected manufacturing organisations in Zimbabwe. The empirical results obtained from the study showed that survivors in a developing economy with a volatile environment had moderate levels of attitudes, commitment ad motivation. Two categories of factors were identified as important in influencing these levels. They were downsizing strategy and demographic factors. The downsizing strategy factors were communication and victim support, while education, age, and number of years employed emerged as the demographic factors. The study further highlighted that older survivors with less education contributed more to the moderate levels of attitude, commitment and motivation observed. The study highlights that these variables must be taken into consideration when implementing downsizing in an economically volatile environment in order to manage survivor quality. A further point emanating from the study is that prior to downsizing, organisations should adopt effective communication strategies throughout the process. The key factors identified as influencing survivor quality in this study were integrated into the survivor quality model which can be used by other organisations in a similar context to manage survivor quality in order to increase their efficiency, effectiveness, iv and competitive advantage after downsizing.
- Full Text:
- Date Issued: 2009
- Authors: Chipunza, Crispen
- Date: 2009
- Subjects: Downsizing of organizations -- South Africa , Organizational change -- South Africa , Cost control , Unemployment -- Psychological aspects
- Language: English
- Type: Thesis , Doctoral , DTech
- Identifier: vital:9381 , http://hdl.handle.net/10948/1219 , Downsizing of organizations -- South Africa , Organizational change -- South Africa , Cost control , Unemployment -- Psychological aspects
- Description: Today organisations all over the world have to cope with the ever-increasing rate of local and global change. Those in developing countries have to cope with the inefficiencies engendered by state-led economic, developmental and political strategies, such as new government regulations. These have had an impact on the management of human resources and are exemplified by an increasing adoption of strategies meant to reduce pressure on costs and margins. An increasing popular management response to these challenges has been to engage in some form of organisational restructuring such as downsizing. Often employees who remain (survivors) after downsizing are not given much attention, yet the achievement of new strategic goals depends on the survivors having positive attitudes, relentless commitment and high motivation. Research indicates that employees who are motivated and committed contribute vastly to the financial-bottom-line of the organisation. Therefore, downsizing organisations should continuously search for ways to increase such qualities among their survivors. The objective of this study was to identify the factors that influence the attitudes, commitment and motivation of survivors in a developing economy with a volatile environment. To achieve this objective, a theoretical survivor quality model was presented. In order to present the model, firstly, a literature survey on the importance of survivor quality in terms of attitudes, commitment, and motivation among survivors was conducted. Secondly, literature survey pertaining to the drivers of survivor quality was done, and thirdly, literature dealing with strategies to deal with survivor quality was surveyed. The theoretical survivor quality model was used to compile the research instrument that determined the attitudinal, commitment and motivational levels of survivors, how the three constructs are related after downsizing, as well as the factors influencing the observed levels. The questionnaire was randomly distributed among survivors in the selected manufacturing organisations in Zimbabwe. The empirical results obtained from the study showed that survivors in a developing economy with a volatile environment had moderate levels of attitudes, commitment ad motivation. Two categories of factors were identified as important in influencing these levels. They were downsizing strategy and demographic factors. The downsizing strategy factors were communication and victim support, while education, age, and number of years employed emerged as the demographic factors. The study further highlighted that older survivors with less education contributed more to the moderate levels of attitude, commitment and motivation observed. The study highlights that these variables must be taken into consideration when implementing downsizing in an economically volatile environment in order to manage survivor quality. A further point emanating from the study is that prior to downsizing, organisations should adopt effective communication strategies throughout the process. The key factors identified as influencing survivor quality in this study were integrated into the survivor quality model which can be used by other organisations in a similar context to manage survivor quality in order to increase their efficiency, effectiveness, iv and competitive advantage after downsizing.
- Full Text:
- Date Issued: 2009
From abundance to bondage : an investigation of the causes of the political crisis in Zimbabwe from 1995 to 2005
- Mcakuvana, Malibongwe Patrick
- Authors: Mcakuvana, Malibongwe Patrick
- Date: 2009
- Subjects: Political violence -- Zimbabwe , Zimbabwe -- Politics and government -- 1995-2005 , Zimbabwe -- Social conditions -- 1995-2005 , Zimbabwe -- History
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:8213 , http://hdl.handle.net/10948/1069 , Political violence -- Zimbabwe , Zimbabwe -- Politics and government -- 1995-2005 , Zimbabwe -- Social conditions -- 1995-2005 , Zimbabwe -- History
- Description: This study investigates the main causes of the present political crisis in Zimbabwe with particular reference to the crisis as a direct result of a crisis of authority or governance. The economy and the political environments in the former Rhodesia have been in a healthy state until the early 1990s when the ruling ZANU-PF had its rule under siege when the economy dwindled and the opposition became rife. The broad questions that the study sought to answer were: What have been the primary reasons for the political crisis in Zimbabwe between 1995 and 2005? What role has the political elite played in the country’s development? What contribution did the Economic Structural Adjustment Programme make to the economic development of Zimbabwe? Are there any other important factors that have played a role in the development process of Zimbabwe? As a way of investigation, this study uses qualitative research techniques to make a clinical examination of the main causes of the political crisis that has reduced the formerly self-sustaining and democratically highly rated country to a pariah citizen (state) of the world. A number of primary sources have been used and have had their responses/input supplemented by relatively reliable secondary sources that gave authenticity to the argument of the research. This study makes a ten year review of the political and economic situation in Zimbabwe, as this is the period whence the political crisis became apparent and restricts its investigation of the causes of the political crisis to this period albeit some of these reasons are connected to the past i.e. the period from 1980 to 1995. Since this is a deductive scholarly account, the study tests the theory of organic crisis as an explanation for state collapse in Africa with particular reference to Zimbabwe. Finally the study reveals that the major causes of the political crisis in Zimbabwe are the colonial legacy which seems to have had its negative on the politics of the country just ten years into democracy; the crisis of governance which led to political and economic decay as the ruling party tried by all means to solicit political support; the Lancaster House agreement and the land question which are related to the question of colonial legacy and among the primary reasons Zimbabwe has reached political impasse; the crisis of elites which this directly links to the political crisis; structural adjustment programmes and corruption and fraud.
- Full Text:
- Date Issued: 2009
- Authors: Mcakuvana, Malibongwe Patrick
- Date: 2009
- Subjects: Political violence -- Zimbabwe , Zimbabwe -- Politics and government -- 1995-2005 , Zimbabwe -- Social conditions -- 1995-2005 , Zimbabwe -- History
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:8213 , http://hdl.handle.net/10948/1069 , Political violence -- Zimbabwe , Zimbabwe -- Politics and government -- 1995-2005 , Zimbabwe -- Social conditions -- 1995-2005 , Zimbabwe -- History
- Description: This study investigates the main causes of the present political crisis in Zimbabwe with particular reference to the crisis as a direct result of a crisis of authority or governance. The economy and the political environments in the former Rhodesia have been in a healthy state until the early 1990s when the ruling ZANU-PF had its rule under siege when the economy dwindled and the opposition became rife. The broad questions that the study sought to answer were: What have been the primary reasons for the political crisis in Zimbabwe between 1995 and 2005? What role has the political elite played in the country’s development? What contribution did the Economic Structural Adjustment Programme make to the economic development of Zimbabwe? Are there any other important factors that have played a role in the development process of Zimbabwe? As a way of investigation, this study uses qualitative research techniques to make a clinical examination of the main causes of the political crisis that has reduced the formerly self-sustaining and democratically highly rated country to a pariah citizen (state) of the world. A number of primary sources have been used and have had their responses/input supplemented by relatively reliable secondary sources that gave authenticity to the argument of the research. This study makes a ten year review of the political and economic situation in Zimbabwe, as this is the period whence the political crisis became apparent and restricts its investigation of the causes of the political crisis to this period albeit some of these reasons are connected to the past i.e. the period from 1980 to 1995. Since this is a deductive scholarly account, the study tests the theory of organic crisis as an explanation for state collapse in Africa with particular reference to Zimbabwe. Finally the study reveals that the major causes of the political crisis in Zimbabwe are the colonial legacy which seems to have had its negative on the politics of the country just ten years into democracy; the crisis of governance which led to political and economic decay as the ruling party tried by all means to solicit political support; the Lancaster House agreement and the land question which are related to the question of colonial legacy and among the primary reasons Zimbabwe has reached political impasse; the crisis of elites which this directly links to the political crisis; structural adjustment programmes and corruption and fraud.
- Full Text:
- Date Issued: 2009
From song to literary texts : a study of the influence of isiXhosa lyrics on selected isiXhosa texts
- Authors: Dlepu, Siziwe Everrette
- Date: 2009
- Subjects: Xhosa (African people) -- Songs and music -- Texts , Folk songs, Xhosa -- South Africa , Xhosa (African people) -- Music , Xhosa -- Music
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:8460 , http://hdl.handle.net/10948/943 , Xhosa (African people) -- Songs and music -- Texts , Folk songs, Xhosa -- South Africa , Xhosa (African people) -- Music , Xhosa -- Music
- Description: Songs play a vital role in the everyday life of the AmaXhosa. Each and every occasion or gathering is accompanied by singing. Their anger or pain, sorrow or joy is reflected in their singing. Although these songs are composed for social purposes and entertainment, they are also educational. Songs may be composed and sung to comment on political affairs, complain against the abuse of power by the authorities, declare war, protest, praise a hero, encourage working together and ridicule the foolishness of someone. Vocabulary and diction used in the composition of these songs, relays the message in a clever and witty style. Since the AmaXhosa are intellectuals, irony and satire are used. The satirical or ironical songs hide the meaning and the listener must unravel the real meaning. AmaXhosa singing, chanting and dancing is accompanied by instruments. These instruments add more rhythm to the dance.The AmaXhosa use anything at their disposal when carving their instruments. Their songs may be accompanied by the beating of cow-hide drums, blowing of reed-pipe whistles, animal horns, beating of sticks and hand-clapping. The most important instrument the AmaXhosa use is the human voice. They are experts in humming, gruff singing and whistling. The songs of the AmaXhosa encourage togetherness. When one composes a song, one does not express one’s own feelings, but also the feelings of the community. The AmaXhosa songs are about participation so group singing and dancing is encouraged. Everyone participates either by singing, dancing or clapping. x Respect is the central core of the AmaXhosa songs. That is why the songs are composed according to age groups and sex. Instruments are also used according to ages and sex. Written texts are also a tool to educate the reader. The writers have decided to include songs in their writings to act as a form of entertainment and education. Although some songs lack the hallmarks of a traditional song, they communicate the idea or relay the message the writer wants to convey to the reader. Terms: Mock enconuim, the grotesque and the principle of beautiful deformity, anaphoric construction, diction and connotation, authorial comments, the mask-persona form, usurping of authority and reduction of traditional status.
- Full Text:
- Date Issued: 2009
From song to literary texts : a study of the influence of isiXhosa lyrics on selected isiXhosa texts
- Authors: Dlepu, Siziwe Everrette
- Date: 2009
- Subjects: Xhosa (African people) -- Songs and music -- Texts , Folk songs, Xhosa -- South Africa , Xhosa (African people) -- Music , Xhosa -- Music
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:8460 , http://hdl.handle.net/10948/943 , Xhosa (African people) -- Songs and music -- Texts , Folk songs, Xhosa -- South Africa , Xhosa (African people) -- Music , Xhosa -- Music
- Description: Songs play a vital role in the everyday life of the AmaXhosa. Each and every occasion or gathering is accompanied by singing. Their anger or pain, sorrow or joy is reflected in their singing. Although these songs are composed for social purposes and entertainment, they are also educational. Songs may be composed and sung to comment on political affairs, complain against the abuse of power by the authorities, declare war, protest, praise a hero, encourage working together and ridicule the foolishness of someone. Vocabulary and diction used in the composition of these songs, relays the message in a clever and witty style. Since the AmaXhosa are intellectuals, irony and satire are used. The satirical or ironical songs hide the meaning and the listener must unravel the real meaning. AmaXhosa singing, chanting and dancing is accompanied by instruments. These instruments add more rhythm to the dance.The AmaXhosa use anything at their disposal when carving their instruments. Their songs may be accompanied by the beating of cow-hide drums, blowing of reed-pipe whistles, animal horns, beating of sticks and hand-clapping. The most important instrument the AmaXhosa use is the human voice. They are experts in humming, gruff singing and whistling. The songs of the AmaXhosa encourage togetherness. When one composes a song, one does not express one’s own feelings, but also the feelings of the community. The AmaXhosa songs are about participation so group singing and dancing is encouraged. Everyone participates either by singing, dancing or clapping. x Respect is the central core of the AmaXhosa songs. That is why the songs are composed according to age groups and sex. Instruments are also used according to ages and sex. Written texts are also a tool to educate the reader. The writers have decided to include songs in their writings to act as a form of entertainment and education. Although some songs lack the hallmarks of a traditional song, they communicate the idea or relay the message the writer wants to convey to the reader. Terms: Mock enconuim, the grotesque and the principle of beautiful deformity, anaphoric construction, diction and connotation, authorial comments, the mask-persona form, usurping of authority and reduction of traditional status.
- Full Text:
- Date Issued: 2009
Good practice guidelines for improving educator morale
- Authors: Hendricks, Estelle
- Date: 2009
- Subjects: Teacher morale -- South Africa , Teachers -- Job stress -- South Africa , Teachers -- Job satisfaction -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8665 , http://hdl.handle.net/10948/1247 , Teacher morale -- South Africa , Teachers -- Job stress -- South Africa , Teachers -- Job satisfaction -- South Africa
- Description: The morale of educators in certain schools is very low. From the literature review I concluded that not all schools experience low morale in the same way. There are different factors impacting on the morale of educators at different schools. In this study, the causes of low educator morale, indicators of low morale, the importance of high morale and how low morale can be dealt with were addressed in order to provide guidelines to improve low morale. An empirical study was conducted and 2 schools in the Northern Areas of Port Elizabeth were used in this case study to establish to what measure the educators are exposed to the abovementioned variables. The data was analysed qualitatively and quantitatively. South Africa is divided into different demographic areas. The majority of people living in the communities where these schools are located are poor, unskilled, unemployed and the crime levels are very high. The socio-economic context within which these schools are located also has an impact on the morale of the educators at these schools and it affects their working lives. Educators, SMTs and principals took part in the empirical study so that their views can be compared and to facilitate the researcher to make recommendations on improving low educator morale. The research outcomes were analysed and deductions, recommendations and a need for further research were given. The empirical and literature study emphasised that the morale of educators is low in the schools and this morale status impacts on learners’ achievements, the health of the educators and the health of the institution. The educators in this study ranked their own morale status as low and some of the causes of the low morale according to the empirical study are lack of resources, ill-disciplined learners, uninvolved parents and an ineffective management style of the principal.
- Full Text:
- Date Issued: 2009
- Authors: Hendricks, Estelle
- Date: 2009
- Subjects: Teacher morale -- South Africa , Teachers -- Job stress -- South Africa , Teachers -- Job satisfaction -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8665 , http://hdl.handle.net/10948/1247 , Teacher morale -- South Africa , Teachers -- Job stress -- South Africa , Teachers -- Job satisfaction -- South Africa
- Description: The morale of educators in certain schools is very low. From the literature review I concluded that not all schools experience low morale in the same way. There are different factors impacting on the morale of educators at different schools. In this study, the causes of low educator morale, indicators of low morale, the importance of high morale and how low morale can be dealt with were addressed in order to provide guidelines to improve low morale. An empirical study was conducted and 2 schools in the Northern Areas of Port Elizabeth were used in this case study to establish to what measure the educators are exposed to the abovementioned variables. The data was analysed qualitatively and quantitatively. South Africa is divided into different demographic areas. The majority of people living in the communities where these schools are located are poor, unskilled, unemployed and the crime levels are very high. The socio-economic context within which these schools are located also has an impact on the morale of the educators at these schools and it affects their working lives. Educators, SMTs and principals took part in the empirical study so that their views can be compared and to facilitate the researcher to make recommendations on improving low educator morale. The research outcomes were analysed and deductions, recommendations and a need for further research were given. The empirical and literature study emphasised that the morale of educators is low in the schools and this morale status impacts on learners’ achievements, the health of the educators and the health of the institution. The educators in this study ranked their own morale status as low and some of the causes of the low morale according to the empirical study are lack of resources, ill-disciplined learners, uninvolved parents and an ineffective management style of the principal.
- Full Text:
- Date Issued: 2009
Guidelines for the management of patients with diabetes mellitus at health care clinics in the Cacadu region of the Eastern Cape Province of South Africa
- De Mendonça, Hester Magdalena
- Authors: De Mendonça, Hester Magdalena
- Date: 2009
- Subjects: Diabetics -- Treatment -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , DCur
- Identifier: vital:10011 , http://hdl.handle.net/10948/1017 , Diabetics -- Treatment -- South Africa -- Eastern Cape
- Description: Diabetes Mellitus (DM) is the new epidemic in the world with 246 million people suffering from the disease at the moment and a projected increase to 380 million in 2025 (IDF, 2007b:36). The developing countries are the most vulnerable. Statistics state that SA and Egypt have the most diabetics on the continent. Globally, each year 3,8 million deaths are attributable to DM (IDF, 2007a). The Department of Health (DOH) and the Cacadu District Municipality (Eastern Cape) are serving a population of 102 721 in the Kouga and Koukamma areas, which covers an area of 5 992 km², with health care. There are 22 clinics with 28 registered nurses for all the clinics and between 3 and 9 lay health workers (LHWs) per clinic. For the purpose of this research study, the persons suffering from DM (±3550) in this area were taken into consideration (Strydom, 2005). DM is a chronic disorder and therefore patients should be able to manage their disease pattern for the rest of their lives (Healthline, 2008, Mbanya, 2006:12). In order to achieve this, continuous and effective patient education by health care providers are necessary. This disease affects more and more people each passing day, because of the rapid westernisation of the South African population, leading to more people attending clinics in the public health sector (Bonnici, 2002:32). There are specific guidelines laid down by the Department of Health (DOH) pertaining to the control and management of DM. Guidelines include the early diagnosis, treatment and patient education regarding DM (Department of Health, 1997, [revised 2004]). Evidence from previous research studies showed that not all registered nurses are aware of these guidelines and most have not been educated regarding the utilisation of these guidelines (O’Brien, van Rooyen & Carlson, 2006:36-40). In the clinics, the health care givers are confronted with a number of difficulties, such as a lack of funds to enable them to order adequate equipment and medicine. Another problem is the migration of registered nurses out of the country thus; there is also a shortage of staff to operate these clinics (Mkhize, 2004). The organisational structure in the clinics does not function optimally and there is a lack of communication between provincial, district and clinic level. Due to the above-mentioned challenges there is also a lack of efficient auditing systems to ensure quality assurance. Furthermore, a knowledge deficit pertaining to DM and the management thereof in all the groups participating in this study, namely the registered nurses, the lay health workers (LHWs) and the diabetic patients was found. The empowerment process of the LHW is not explored fully and therefore not executed to its full potential. To be able to improve the management of DM in this region, it is important to know what the difficulties are that the health care givers as well as the patients experience in relation to this issue. This study therefore explored and described these difficulties. The research was based on a qualitative, quantitative, explorative, descriptive and contextual research design. Health care givers as well as diabetic patients attending clinics in the Cacadu region of the Eastern Cape have been requested to complete questionnaires pertaining to their knowledge of Diabetes Mellitus. The current organisational structure of the provincial department of health was explored and findings analysed using the activities of the management process (Muller, 2006:106). The SA Government is committed to combining the national human resource development strategy with the rapid upgrading of service delivery to all of the nation’s communities. Stemming from this undertaking, suitable members of the community are to be trained as LHWs. LHWs are to play an integral role in strengthening the abilities of the community to empower themselves to participate and take responsibility for their own health and wellness (Department of Health, 2001a:4). From the research, it was found that the above-mentioned national plan had been implemented, but is not functioning at optimum level due to several shortcomings/deficits. Proposed guidelines were therefore designed to address the shortcomings and fragmentation of the plan. As specific knowledge deficits in DM were identified during this research study, general educational guidelines were included for the registered nurses and the diabetic patients. The LHW was identified as an indispensable link in the chain of efficient health care and therefore, specific educational guidelines on DM were generated to prepare her for the role. With her knowledge, insight into DM and the management thereof and newly required skills in educating and supporting of the patient, she could be an asset in the road to optimum self-care for the diabetic patient.
- Full Text:
- Date Issued: 2009
- Authors: De Mendonça, Hester Magdalena
- Date: 2009
- Subjects: Diabetics -- Treatment -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , DCur
- Identifier: vital:10011 , http://hdl.handle.net/10948/1017 , Diabetics -- Treatment -- South Africa -- Eastern Cape
- Description: Diabetes Mellitus (DM) is the new epidemic in the world with 246 million people suffering from the disease at the moment and a projected increase to 380 million in 2025 (IDF, 2007b:36). The developing countries are the most vulnerable. Statistics state that SA and Egypt have the most diabetics on the continent. Globally, each year 3,8 million deaths are attributable to DM (IDF, 2007a). The Department of Health (DOH) and the Cacadu District Municipality (Eastern Cape) are serving a population of 102 721 in the Kouga and Koukamma areas, which covers an area of 5 992 km², with health care. There are 22 clinics with 28 registered nurses for all the clinics and between 3 and 9 lay health workers (LHWs) per clinic. For the purpose of this research study, the persons suffering from DM (±3550) in this area were taken into consideration (Strydom, 2005). DM is a chronic disorder and therefore patients should be able to manage their disease pattern for the rest of their lives (Healthline, 2008, Mbanya, 2006:12). In order to achieve this, continuous and effective patient education by health care providers are necessary. This disease affects more and more people each passing day, because of the rapid westernisation of the South African population, leading to more people attending clinics in the public health sector (Bonnici, 2002:32). There are specific guidelines laid down by the Department of Health (DOH) pertaining to the control and management of DM. Guidelines include the early diagnosis, treatment and patient education regarding DM (Department of Health, 1997, [revised 2004]). Evidence from previous research studies showed that not all registered nurses are aware of these guidelines and most have not been educated regarding the utilisation of these guidelines (O’Brien, van Rooyen & Carlson, 2006:36-40). In the clinics, the health care givers are confronted with a number of difficulties, such as a lack of funds to enable them to order adequate equipment and medicine. Another problem is the migration of registered nurses out of the country thus; there is also a shortage of staff to operate these clinics (Mkhize, 2004). The organisational structure in the clinics does not function optimally and there is a lack of communication between provincial, district and clinic level. Due to the above-mentioned challenges there is also a lack of efficient auditing systems to ensure quality assurance. Furthermore, a knowledge deficit pertaining to DM and the management thereof in all the groups participating in this study, namely the registered nurses, the lay health workers (LHWs) and the diabetic patients was found. The empowerment process of the LHW is not explored fully and therefore not executed to its full potential. To be able to improve the management of DM in this region, it is important to know what the difficulties are that the health care givers as well as the patients experience in relation to this issue. This study therefore explored and described these difficulties. The research was based on a qualitative, quantitative, explorative, descriptive and contextual research design. Health care givers as well as diabetic patients attending clinics in the Cacadu region of the Eastern Cape have been requested to complete questionnaires pertaining to their knowledge of Diabetes Mellitus. The current organisational structure of the provincial department of health was explored and findings analysed using the activities of the management process (Muller, 2006:106). The SA Government is committed to combining the national human resource development strategy with the rapid upgrading of service delivery to all of the nation’s communities. Stemming from this undertaking, suitable members of the community are to be trained as LHWs. LHWs are to play an integral role in strengthening the abilities of the community to empower themselves to participate and take responsibility for their own health and wellness (Department of Health, 2001a:4). From the research, it was found that the above-mentioned national plan had been implemented, but is not functioning at optimum level due to several shortcomings/deficits. Proposed guidelines were therefore designed to address the shortcomings and fragmentation of the plan. As specific knowledge deficits in DM were identified during this research study, general educational guidelines were included for the registered nurses and the diabetic patients. The LHW was identified as an indispensable link in the chain of efficient health care and therefore, specific educational guidelines on DM were generated to prepare her for the role. With her knowledge, insight into DM and the management thereof and newly required skills in educating and supporting of the patient, she could be an asset in the road to optimum self-care for the diabetic patient.
- Full Text:
- Date Issued: 2009
Habitat and foraging models as aids in the identification of priority areas for mitigating actions to reduce the incidence of electrocutions of the threatened Cape Griffon Gyps coprotheres in the Eastern Cape
- Authors: Minnie, Johan Charles
- Date: 2009
- Subjects: Gyps -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10658 , http://hdl.handle.net/10948/1047 , http://hdl.handle.net/10948/d1012887 , Gyps -- South Africa -- Eastern Cape
- Description: The Cape Griffon Gyps coprotheres is listed as a globally threatened species, because of threats posed by, inter alia, poisoning, loss of habitat, food shortages, electrocutions and drowning in high-walled farm reservoirs. The Cape Griffon has undergone major decline in South Africa, including the Eastern Cape. A detailed investigation into the causes of this decline is vital to ensure the survival of the species. Since it is known that electrocution on powerlines is a major cause of mortality of the griffons in the Eastern Cape, the study therefore focuses on this factor in this region. More specifically, the overall aim or objective of the study is to investigate, through the application of appropriate GIS techniques, the use of descriptive, empirical, habitat and foraging models to prioritise powerline networks, in the Eastern Cape, for mitigation to prevent electrocution of Cape Griffons Gyps coprotheres. The specific activities associated with the aim of the study are: (1) to identify the broad habitat types used by the griffons, (2) to determine the mean daily foraging range size of the griffons, (3) to map currently active foraging ranges and to categorise them according to their role, and the level of importance, in the foraging and breeding behaviour of the species, (4) to map the locations of networks of griffon-unfriendly powerline networks, and (5) to integrate the outcomes of (1) to (4) above, to produce a spatially explicit product that ranks griffon-unfriendly powerline networks according to their priority level for mitigation. The study uses simple descriptive models to investigate, spatially, the threat posed by griffon-unfriendly powerlines to the Cape Griffon in the Eastern Cape. The modelling approach includes a broad level simple habitat model (Categorical model), a Maxent model, a spatial foraging model and an electrocution model. Several map outputs were produced from the analyses. Cape Griffon habitat was successfully modelled using ecological input variables: biome, vegetation xvii type (suitable/unsuitable for griffon foraging), stock (cattle, sheep and goats), and stock farming types (commercial & communal). All outputs were modelled through the use of a Geographical Information System (GIS). Opportunistic sightings data were used for the study, which means that the data were collected on a non-systematic basis and are therefore considered incomplete. In ecology and zoogeography, incomplete datasets are common. To address this issue, a maximum entropy (Maxent) model was applied to the available dataset. Maxent produces predictions or conclusions from incomplete information, and was therefore useful for this study. The mean daily foraging area (coverage) of the Cape Griffon in the study area was estimated from published and unpublished marked bird studies conducted elsewhere, but in generally similar habitats. Based on all the data from these studies, it was considered appropriate to use a circular area, with a radius of 40 km, to represent the mean daily foraging range of the Cape Griffon in the Eastern Cape. It was considered appropriate to use a roughly circular area to depict the daily foraging area, given that the Cape Griffon qualifies as a central place forager. This means that the griffons are tied to a permanent site (roosting site or breeding site) and forage within a certain area around that central site. The mean daily foraging area (40 km) was applied to the currently active griffon sites: breeding sites, regular roosting sites, seasonal/occasional sites, and roosting sites (uncertain status). This produced four foraging area types, which formed the basis for the creation of two spatial foraging area models: Hierarchical Foraging Area Model (HFAM) and the Intersecting Foraging Area Model (IFAM). The HFAM produced three outputs: Primary, Secondary and Tertiary Foraging Areas. These three areas represent the hierarchical presentation of the relative importance of the four foraging area types. The outcome was areas of different predicted griffon occurrence: ‘high’, ‘medium’, ‘low’. The IFAM is essentially an extension of the HFAM, which represents a single area where foraging ranges based on all four types are intersected. The outcome represents the area of predicted highest griffon occurrence. The identified areas of different predicted griffon occurrence, or density (outputs of the HFAM and IFAM), were individually intersected with the layer that indicates the locations of the ‘unsafe’ powerlines. These intersects are depicted in hierarchical mode and expressed according to a number of four risk categories (very high, high, medium and low). The final spatial output of the study is a map that identifies priority powerlines for mitigation against griffon mortality caused by electrocutions and collisions with powerline infrastructure.
- Full Text:
- Date Issued: 2009
- Authors: Minnie, Johan Charles
- Date: 2009
- Subjects: Gyps -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10658 , http://hdl.handle.net/10948/1047 , http://hdl.handle.net/10948/d1012887 , Gyps -- South Africa -- Eastern Cape
- Description: The Cape Griffon Gyps coprotheres is listed as a globally threatened species, because of threats posed by, inter alia, poisoning, loss of habitat, food shortages, electrocutions and drowning in high-walled farm reservoirs. The Cape Griffon has undergone major decline in South Africa, including the Eastern Cape. A detailed investigation into the causes of this decline is vital to ensure the survival of the species. Since it is known that electrocution on powerlines is a major cause of mortality of the griffons in the Eastern Cape, the study therefore focuses on this factor in this region. More specifically, the overall aim or objective of the study is to investigate, through the application of appropriate GIS techniques, the use of descriptive, empirical, habitat and foraging models to prioritise powerline networks, in the Eastern Cape, for mitigation to prevent electrocution of Cape Griffons Gyps coprotheres. The specific activities associated with the aim of the study are: (1) to identify the broad habitat types used by the griffons, (2) to determine the mean daily foraging range size of the griffons, (3) to map currently active foraging ranges and to categorise them according to their role, and the level of importance, in the foraging and breeding behaviour of the species, (4) to map the locations of networks of griffon-unfriendly powerline networks, and (5) to integrate the outcomes of (1) to (4) above, to produce a spatially explicit product that ranks griffon-unfriendly powerline networks according to their priority level for mitigation. The study uses simple descriptive models to investigate, spatially, the threat posed by griffon-unfriendly powerlines to the Cape Griffon in the Eastern Cape. The modelling approach includes a broad level simple habitat model (Categorical model), a Maxent model, a spatial foraging model and an electrocution model. Several map outputs were produced from the analyses. Cape Griffon habitat was successfully modelled using ecological input variables: biome, vegetation xvii type (suitable/unsuitable for griffon foraging), stock (cattle, sheep and goats), and stock farming types (commercial & communal). All outputs were modelled through the use of a Geographical Information System (GIS). Opportunistic sightings data were used for the study, which means that the data were collected on a non-systematic basis and are therefore considered incomplete. In ecology and zoogeography, incomplete datasets are common. To address this issue, a maximum entropy (Maxent) model was applied to the available dataset. Maxent produces predictions or conclusions from incomplete information, and was therefore useful for this study. The mean daily foraging area (coverage) of the Cape Griffon in the study area was estimated from published and unpublished marked bird studies conducted elsewhere, but in generally similar habitats. Based on all the data from these studies, it was considered appropriate to use a circular area, with a radius of 40 km, to represent the mean daily foraging range of the Cape Griffon in the Eastern Cape. It was considered appropriate to use a roughly circular area to depict the daily foraging area, given that the Cape Griffon qualifies as a central place forager. This means that the griffons are tied to a permanent site (roosting site or breeding site) and forage within a certain area around that central site. The mean daily foraging area (40 km) was applied to the currently active griffon sites: breeding sites, regular roosting sites, seasonal/occasional sites, and roosting sites (uncertain status). This produced four foraging area types, which formed the basis for the creation of two spatial foraging area models: Hierarchical Foraging Area Model (HFAM) and the Intersecting Foraging Area Model (IFAM). The HFAM produced three outputs: Primary, Secondary and Tertiary Foraging Areas. These three areas represent the hierarchical presentation of the relative importance of the four foraging area types. The outcome was areas of different predicted griffon occurrence: ‘high’, ‘medium’, ‘low’. The IFAM is essentially an extension of the HFAM, which represents a single area where foraging ranges based on all four types are intersected. The outcome represents the area of predicted highest griffon occurrence. The identified areas of different predicted griffon occurrence, or density (outputs of the HFAM and IFAM), were individually intersected with the layer that indicates the locations of the ‘unsafe’ powerlines. These intersects are depicted in hierarchical mode and expressed according to a number of four risk categories (very high, high, medium and low). The final spatial output of the study is a map that identifies priority powerlines for mitigation against griffon mortality caused by electrocutions and collisions with powerline infrastructure.
- Full Text:
- Date Issued: 2009
How can I create a stimulating environment to promote awareness of and love for reading in my classroom?
- Authors: Jantjies, Beverley Esther
- Date: 2009
- Subjects: Reading (Primary) , Reading (Early childhood) , Reading readiness , Reading -- Language experience approach
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9523 , http://hdl.handle.net/10948/987 , Reading (Primary) , Reading (Early childhood) , Reading readiness , Reading -- Language experience approach
- Description: This study critically examines my classroom practice in teaching young learners aged four-and-a-half to six years old. It focuses on the following research question: How can I create a stimulating environment in my classroom to promote awareness of and a love for reading? My classroom-based action research methodology places me, the practitioner, at the centre of the investigation. The work examines closely my professional values and my strong belief in the capacity of learners to be curious, absorb and make sense of what they encounter and experience in a stimulating environment. It investigates how such an environment develops the potential of learners to love and embrace reading. The process of engaging reflectively and analytically in practitioner research has helped me to gain a better understanding of my learners’ needs and to improve the ways in which I promote reading in the reception year of formal schooling. I claim that the creating of a stimulating environment in my classroom is grounded in my ability to motivate, model and scaffold the learners to engage in reading confidently. Together, the learners and I have created a living theory of education, one that is open to further reflection and development. Ongoing interaction between theoretical discourse and practical experiences enable me to develop my professional knowledge and to synthesize my values and practice. The investigation continuously confirms the advantages of a print-rich environment and how it can be used to promote a love for reading amongst young learners. The claims and knowledge generated in this study are personal and true for me, while the living transformational process demonstrates how I have developed professionally.
- Full Text:
- Date Issued: 2009
- Authors: Jantjies, Beverley Esther
- Date: 2009
- Subjects: Reading (Primary) , Reading (Early childhood) , Reading readiness , Reading -- Language experience approach
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9523 , http://hdl.handle.net/10948/987 , Reading (Primary) , Reading (Early childhood) , Reading readiness , Reading -- Language experience approach
- Description: This study critically examines my classroom practice in teaching young learners aged four-and-a-half to six years old. It focuses on the following research question: How can I create a stimulating environment in my classroom to promote awareness of and a love for reading? My classroom-based action research methodology places me, the practitioner, at the centre of the investigation. The work examines closely my professional values and my strong belief in the capacity of learners to be curious, absorb and make sense of what they encounter and experience in a stimulating environment. It investigates how such an environment develops the potential of learners to love and embrace reading. The process of engaging reflectively and analytically in practitioner research has helped me to gain a better understanding of my learners’ needs and to improve the ways in which I promote reading in the reception year of formal schooling. I claim that the creating of a stimulating environment in my classroom is grounded in my ability to motivate, model and scaffold the learners to engage in reading confidently. Together, the learners and I have created a living theory of education, one that is open to further reflection and development. Ongoing interaction between theoretical discourse and practical experiences enable me to develop my professional knowledge and to synthesize my values and practice. The investigation continuously confirms the advantages of a print-rich environment and how it can be used to promote a love for reading amongst young learners. The claims and knowledge generated in this study are personal and true for me, while the living transformational process demonstrates how I have developed professionally.
- Full Text:
- Date Issued: 2009
How effective are school governing bodies regarding maintaining discipline in schools situated in poor socio-economic areas?
- Authors: Hawkins, Alan Hilton
- Date: 2009
- Subjects: School boards -- South Africa , School discipline -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9475 , http://hdl.handle.net/10948/972 , School boards -- South Africa , School discipline -- South Africa
- Description: Poor discipline in public schools has become a major concern following the abolishment of corporal punishment by the National Department of Education. The educators in schools were left with no constructive alternatives to maintain discipline by the educational authorities and had to find and implement alternative disciplinary measures. Ill-disciplined learners capitalised on the situation, resulting in the deterioration of discipline in public schools. The aim of this research is to identify how effective SGBs are regarding the maintenance of discipline in schools situated in poor socio-economic areas. For this purpose, a qualitative study was conducted in four secondary schools in the Northern Areas of Port Elizabeth in the Eastern Cape. Different data-collection techniques, in the form of questionnaires, focus group interviews, observations and documentary analysis, were used to obtain the necessary data. Learners, educators and parent members of School Governing Bodies (SGBs) were used as participants for the study. The findings of the study indicated that parent SGB members lacks relevant and ongoing training and development for the task of executing their roles as disciplinarian bodies at their respective schools. The fact that these are lacking have contributed to the general deterioration of school discipline in the selected schools. The study concludes with suggestions on strategies that SGBs can implement to improve their capacity in improving and maintaining discipline. Such improved capacity will create an environment that is conducive for teaching and learning, especially in schools situated in impoverished areas.
- Full Text:
- Date Issued: 2009
- Authors: Hawkins, Alan Hilton
- Date: 2009
- Subjects: School boards -- South Africa , School discipline -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9475 , http://hdl.handle.net/10948/972 , School boards -- South Africa , School discipline -- South Africa
- Description: Poor discipline in public schools has become a major concern following the abolishment of corporal punishment by the National Department of Education. The educators in schools were left with no constructive alternatives to maintain discipline by the educational authorities and had to find and implement alternative disciplinary measures. Ill-disciplined learners capitalised on the situation, resulting in the deterioration of discipline in public schools. The aim of this research is to identify how effective SGBs are regarding the maintenance of discipline in schools situated in poor socio-economic areas. For this purpose, a qualitative study was conducted in four secondary schools in the Northern Areas of Port Elizabeth in the Eastern Cape. Different data-collection techniques, in the form of questionnaires, focus group interviews, observations and documentary analysis, were used to obtain the necessary data. Learners, educators and parent members of School Governing Bodies (SGBs) were used as participants for the study. The findings of the study indicated that parent SGB members lacks relevant and ongoing training and development for the task of executing their roles as disciplinarian bodies at their respective schools. The fact that these are lacking have contributed to the general deterioration of school discipline in the selected schools. The study concludes with suggestions on strategies that SGBs can implement to improve their capacity in improving and maintaining discipline. Such improved capacity will create an environment that is conducive for teaching and learning, especially in schools situated in impoverished areas.
- Full Text:
- Date Issued: 2009
Immobilization of catalyst in a wall-coated micro-structured reactor for gas/liquid oxidation of p-cymene
- Authors: Makgwane, Peter Ramashadi
- Date: 2009
- Subjects: Oxidation , Cymene
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:10389 , http://hdl.handle.net/10948/1182 , Oxidation , Cymene
- Description: The selective, liquid phase oxidation of p-cymene is an important synthetic route for the production of p-cresol via the tertiary cymene hydroperoxide (TCHP). The industrial-scale oxidation process is characterised by slow oxidation rates due to limitations in the mass transfer of oxidant (gaseous oxygen) into the liquid phase. However, like all other autoxidation reactions, the oxidation reaction is exothermic, following the typical free radical autoxidation reaction mechanism, which implies that careful temperature control is critical in order to prevent the further reaction of the initially formed hydroperoxide species. In the presence of metal catalysts, the limiting oxidation rate is the transfer of oxygen from the gas to liquid boundary interface. As a result, low product yields and poor productivity space-time yield are typically experienced. At high substrate conversions, by-products resulting from the decomposition of the formed hydroperoxides predominate. For this reason, the conversion of substrate is restricted to preserve the TCHP selectivity. The slow rates in industrial-scale p-cymene oxidations results in long oxidation times, typically 8-12 h. Substrate conversions are typically between 15-20 percent, and the TCHP selectivity ranges between 65-70 percent. The work described in this thesis concerns the oxidation of p-cymene in a microstructured falling film reactor (FFMSR). These reactor systems facilitate chemical reactors to have high mass and heat transfer rates because of high surface area-to-volume ratios. Due to their small internal volumes, these reactors are inherently safe to operate. These properties were exploited to improve the p-cymene oxidation rate and, consequently, the space-time yield. In order to evaluate the suitability of vanadium phosphate oxide (VPO) catalysts for use as supported catalyst in the FFMSR, different catalysts prepared from VOHPO4∙0.5H2O and VO(H2PO4)2 precursors was first evaluated for the oxidation of p-cymene in a well-stirred batch reactor. The results of the two activated catalysts, (VO)2P2O7 and VO(PO3)2 when used as powders in their pure form, showed a significant improvement in p-cymene oxidation rates with conversions up to 40 percent in 3-4 h reaction time with a TCHP selectivity of 75-80 percent. The (VO)2P2O7 catalyst showed better oxidation rates and selectivity when compared to the VO(PO3)2 catalyst obtained from the VO(H2PO4)2 precursor. The (VO)2P2O7 catalyst was supported on a stainless steel plate and the coated plate used to study the long-term stability and catalytic perfornance of the catalyst during p-cymene oxidations in a batch reactor. Comparable oxidation rates and TCHP selectivity were obtained with the stainless steel coated VPO catalyst when compared to the “free powder” (VO)2P2O7 catalyst. The results also showed that the stainless steel coated catalyst displays a slow, yet significant deactivation over extended reaction periods (250 h onstream). Characterization of the exposed (VO)2P2O7 catalyst to p-cymene oxidation conditions by powder XRD, SEM and TGA-MS showed that (VO)2P2O7 phase undergoes structural transformation back to VOHPO4∙0.5H2O phase over time. The (VO)2P2O7/-Al2O3 catalyst was used to coat the micro-channel reaction plates of the FFMSR. Both uncoated and coated micro-channel reaction plates were evaluated in the FFMSR for the oxidation of p-cymene. The FFMSR showed effective improvement of oxidation rates in terms of productivity space-time-yield at comparable batch p-cymene conversions. A Typical 10 percent conversion in catalysed batch oxidations at 1-2 h reaction time was achieved in few seconds (19 s) reaction time in FFMSR. The comparison of uncoated (i.e. uncatalysed) and coated (i.e. catalysed) FFMSR oxidations showed slight differences in oxidation rates. No clear explanation could be established with the present results for the observed same behaviour. However, the insufficient contact time between the gas and liquid reactants with the wall-coated solid catalyst is one of the possible causes for the observed behaviour of the coated and uncoated micro-channel plates. A simple developed kinetic model was used to confirm the obtained batch oxidation results using cumene as probe compound due to its similarity to p-cumene oxidation and extensive studied kinetics. With the estimated K values and available rate constants from literature, it was possible to predict the conversions in a batch reactor at the same typical micro-structured reactor residence time (i.e. of 19 s). The predicted conversions in the batch reactor were less than 0.1 percent even at harsh conditions such as 170 oC when compared to about 10 percent achieved in the micro-structured reactor at the same reaction temperature, reactants concentration and reaction time of 19 s. This difference in the reactor systems performance indicates the unique advantages offered by micro-structured reactors (e.g. improved mass transfer, temperature management and high surface-to-volume ratios) to perform typical gas/liquid mass transfer limited reactions such as cumene and p-cymene autoxidations.
- Full Text:
- Date Issued: 2009
- Authors: Makgwane, Peter Ramashadi
- Date: 2009
- Subjects: Oxidation , Cymene
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:10389 , http://hdl.handle.net/10948/1182 , Oxidation , Cymene
- Description: The selective, liquid phase oxidation of p-cymene is an important synthetic route for the production of p-cresol via the tertiary cymene hydroperoxide (TCHP). The industrial-scale oxidation process is characterised by slow oxidation rates due to limitations in the mass transfer of oxidant (gaseous oxygen) into the liquid phase. However, like all other autoxidation reactions, the oxidation reaction is exothermic, following the typical free radical autoxidation reaction mechanism, which implies that careful temperature control is critical in order to prevent the further reaction of the initially formed hydroperoxide species. In the presence of metal catalysts, the limiting oxidation rate is the transfer of oxygen from the gas to liquid boundary interface. As a result, low product yields and poor productivity space-time yield are typically experienced. At high substrate conversions, by-products resulting from the decomposition of the formed hydroperoxides predominate. For this reason, the conversion of substrate is restricted to preserve the TCHP selectivity. The slow rates in industrial-scale p-cymene oxidations results in long oxidation times, typically 8-12 h. Substrate conversions are typically between 15-20 percent, and the TCHP selectivity ranges between 65-70 percent. The work described in this thesis concerns the oxidation of p-cymene in a microstructured falling film reactor (FFMSR). These reactor systems facilitate chemical reactors to have high mass and heat transfer rates because of high surface area-to-volume ratios. Due to their small internal volumes, these reactors are inherently safe to operate. These properties were exploited to improve the p-cymene oxidation rate and, consequently, the space-time yield. In order to evaluate the suitability of vanadium phosphate oxide (VPO) catalysts for use as supported catalyst in the FFMSR, different catalysts prepared from VOHPO4∙0.5H2O and VO(H2PO4)2 precursors was first evaluated for the oxidation of p-cymene in a well-stirred batch reactor. The results of the two activated catalysts, (VO)2P2O7 and VO(PO3)2 when used as powders in their pure form, showed a significant improvement in p-cymene oxidation rates with conversions up to 40 percent in 3-4 h reaction time with a TCHP selectivity of 75-80 percent. The (VO)2P2O7 catalyst showed better oxidation rates and selectivity when compared to the VO(PO3)2 catalyst obtained from the VO(H2PO4)2 precursor. The (VO)2P2O7 catalyst was supported on a stainless steel plate and the coated plate used to study the long-term stability and catalytic perfornance of the catalyst during p-cymene oxidations in a batch reactor. Comparable oxidation rates and TCHP selectivity were obtained with the stainless steel coated VPO catalyst when compared to the “free powder” (VO)2P2O7 catalyst. The results also showed that the stainless steel coated catalyst displays a slow, yet significant deactivation over extended reaction periods (250 h onstream). Characterization of the exposed (VO)2P2O7 catalyst to p-cymene oxidation conditions by powder XRD, SEM and TGA-MS showed that (VO)2P2O7 phase undergoes structural transformation back to VOHPO4∙0.5H2O phase over time. The (VO)2P2O7/-Al2O3 catalyst was used to coat the micro-channel reaction plates of the FFMSR. Both uncoated and coated micro-channel reaction plates were evaluated in the FFMSR for the oxidation of p-cymene. The FFMSR showed effective improvement of oxidation rates in terms of productivity space-time-yield at comparable batch p-cymene conversions. A Typical 10 percent conversion in catalysed batch oxidations at 1-2 h reaction time was achieved in few seconds (19 s) reaction time in FFMSR. The comparison of uncoated (i.e. uncatalysed) and coated (i.e. catalysed) FFMSR oxidations showed slight differences in oxidation rates. No clear explanation could be established with the present results for the observed same behaviour. However, the insufficient contact time between the gas and liquid reactants with the wall-coated solid catalyst is one of the possible causes for the observed behaviour of the coated and uncoated micro-channel plates. A simple developed kinetic model was used to confirm the obtained batch oxidation results using cumene as probe compound due to its similarity to p-cumene oxidation and extensive studied kinetics. With the estimated K values and available rate constants from literature, it was possible to predict the conversions in a batch reactor at the same typical micro-structured reactor residence time (i.e. of 19 s). The predicted conversions in the batch reactor were less than 0.1 percent even at harsh conditions such as 170 oC when compared to about 10 percent achieved in the micro-structured reactor at the same reaction temperature, reactants concentration and reaction time of 19 s. This difference in the reactor systems performance indicates the unique advantages offered by micro-structured reactors (e.g. improved mass transfer, temperature management and high surface-to-volume ratios) to perform typical gas/liquid mass transfer limited reactions such as cumene and p-cymene autoxidations.
- Full Text:
- Date Issued: 2009
Implementing an environmental management system in an automative component manufacturing firm
- Authors: Da Fonseca, Carlos Manuel
- Date: 2009
- Subjects: Automobile industry and trade -- Environmental aspects -- South Africa , Manufacturing processes -- Environmental aspects -- South Africa , Management -- Environmental aspects -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8687 , http://hdl.handle.net/10948/1112 , Automobile industry and trade -- Environmental aspects -- South Africa , Manufacturing processes -- Environmental aspects -- South Africa , Management -- Environmental aspects -- South Africa
- Description: Environmental issues seem to be one of the most important topics in the globalised world. Organisations of all sizes are subject to pressure from suppliers, customers and governments to be more environmentally responsible. This research focuses on implementation of an Environmental Management System (EMS) in the automotive industry, both internationally and in South Africa, and examines the background and concepts of the International Organization for Standardization (ISO), as well as the key implementation phases associated with the implementation of an EMS, in accordance with ISO 14001. The problem statement of this research is to determine if it is possible to transfer, apply and sustain environmental concepts to small, medium or large organisations. The primary objectives of this research, therefore, were to determine: does implementation of an EMS provide economic benefits to organisations; what drives an organisation to first implement an EMS; does implementation of an EMS improve environmental awareness and performance; and what implementation barriers are faced by small, medium and large organisations. To achieve these objectives, a literary review and an empirical survey were conducted. The survey consisted of an electronic, self-administered questionnaire that was circulated to respondents at various automotive organisations. Data collected from completed, returned questionnaires were analysed and graphically presented to complete the research and achieve the primary research objectives toward solving the afore-mentioned problem statement. Based on the findings of this research, it can be concluded that there is much to gain from implementing an EMS.
- Full Text:
- Date Issued: 2009
- Authors: Da Fonseca, Carlos Manuel
- Date: 2009
- Subjects: Automobile industry and trade -- Environmental aspects -- South Africa , Manufacturing processes -- Environmental aspects -- South Africa , Management -- Environmental aspects -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8687 , http://hdl.handle.net/10948/1112 , Automobile industry and trade -- Environmental aspects -- South Africa , Manufacturing processes -- Environmental aspects -- South Africa , Management -- Environmental aspects -- South Africa
- Description: Environmental issues seem to be one of the most important topics in the globalised world. Organisations of all sizes are subject to pressure from suppliers, customers and governments to be more environmentally responsible. This research focuses on implementation of an Environmental Management System (EMS) in the automotive industry, both internationally and in South Africa, and examines the background and concepts of the International Organization for Standardization (ISO), as well as the key implementation phases associated with the implementation of an EMS, in accordance with ISO 14001. The problem statement of this research is to determine if it is possible to transfer, apply and sustain environmental concepts to small, medium or large organisations. The primary objectives of this research, therefore, were to determine: does implementation of an EMS provide economic benefits to organisations; what drives an organisation to first implement an EMS; does implementation of an EMS improve environmental awareness and performance; and what implementation barriers are faced by small, medium and large organisations. To achieve these objectives, a literary review and an empirical survey were conducted. The survey consisted of an electronic, self-administered questionnaire that was circulated to respondents at various automotive organisations. Data collected from completed, returned questionnaires were analysed and graphically presented to complete the research and achieve the primary research objectives toward solving the afore-mentioned problem statement. Based on the findings of this research, it can be concluded that there is much to gain from implementing an EMS.
- Full Text:
- Date Issued: 2009
Improving the service quality of taxi operators in the Nelson Mandela Bay
- Authors: Gule, Xolile Michael
- Date: 2009
- Subjects: Service industries -- Quality control , Customer services -- Quality control , Transportation -- South Africa , Taxicabs -- South Africa , Quality Service
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8685 , http://hdl.handle.net/10948/1115 , Service industries -- Quality control , Customer services -- Quality control , Transportation -- South Africa , Taxicabs -- South Africa , Quality Service
- Description: The study focused on the taxi industry as a services industry due to its contribution to the economies of both developed and the developing countries. The purpose of this study was to investigate ways to improve service delivery in the South African taxi industry. This industry is one of the underperforming industries in South Africa with regard to service quality due to over-serviced taxi routes and a lack of information about the needs and desires of the taxi commuters. The primary objective of this study was to investigate how to improve the service quality of taxi operators in the Nelson Mandela Bay by applying theories and concepts of services marketing and total quality management (TQM). More specifically, the study investigated whether taxi drivers have the required knowledge of services marketing and service quality, and what service quality challenges taxi drivers and commuters face. The sample consisted of 20 taxi drivers and 101 student commuters using taxis on the Port Elizabeth routes. The empirical results showed that taxi drivers perform unsatisfactorily on the four TQM elements: leadership, employee involvement, product/ process excellence and customer focus. The results also reflected the general perception in the Eastern Cape that taxi service quality is poor. Of the five service quality dimensions (tangibles, reliability, responsiveness, assurance and empathy), the taxi drivers performed the best in reliability and the worst in empathy. The empirical results further suggested that taxi services do not meet the expectations of commuters, as deficits were reported between expectations and perceptions of actual service quality. The different quality dimensions used in the measurement of taxi service quality and their empirical results could provide a guideline to taxi service leadership and government on the critical aspects of taxi service quality.
- Full Text:
- Date Issued: 2009
- Authors: Gule, Xolile Michael
- Date: 2009
- Subjects: Service industries -- Quality control , Customer services -- Quality control , Transportation -- South Africa , Taxicabs -- South Africa , Quality Service
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8685 , http://hdl.handle.net/10948/1115 , Service industries -- Quality control , Customer services -- Quality control , Transportation -- South Africa , Taxicabs -- South Africa , Quality Service
- Description: The study focused on the taxi industry as a services industry due to its contribution to the economies of both developed and the developing countries. The purpose of this study was to investigate ways to improve service delivery in the South African taxi industry. This industry is one of the underperforming industries in South Africa with regard to service quality due to over-serviced taxi routes and a lack of information about the needs and desires of the taxi commuters. The primary objective of this study was to investigate how to improve the service quality of taxi operators in the Nelson Mandela Bay by applying theories and concepts of services marketing and total quality management (TQM). More specifically, the study investigated whether taxi drivers have the required knowledge of services marketing and service quality, and what service quality challenges taxi drivers and commuters face. The sample consisted of 20 taxi drivers and 101 student commuters using taxis on the Port Elizabeth routes. The empirical results showed that taxi drivers perform unsatisfactorily on the four TQM elements: leadership, employee involvement, product/ process excellence and customer focus. The results also reflected the general perception in the Eastern Cape that taxi service quality is poor. Of the five service quality dimensions (tangibles, reliability, responsiveness, assurance and empathy), the taxi drivers performed the best in reliability and the worst in empathy. The empirical results further suggested that taxi services do not meet the expectations of commuters, as deficits were reported between expectations and perceptions of actual service quality. The different quality dimensions used in the measurement of taxi service quality and their empirical results could provide a guideline to taxi service leadership and government on the critical aspects of taxi service quality.
- Full Text:
- Date Issued: 2009
Improving the strategic management of employee job performance and organisational commitment at merged higher education institutions in South Africa
- Authors: Stofile, Regina Ntongolozi
- Date: 2009
- Subjects: Strategic planning -- Universities , Strategic planning -- Universities and colleges -- South Africa , Mergers -- Universities and colleges -- South Africa , Strategic planning -- Education (Higher)
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:9311 , http://hdl.handle.net/10948/d1018798
- Description: In reaction to intense global competition and increased customer demands, business firms are continuously engaged in activities to increase the effectiveness of their businesses. To be effective business firms must reduce costs, improve the quality of their products and respond quickly to the new opportunities in the market place. These activities often require the restructuring of such businesses. The restructuring of businesses often takes the form of strategic alliances, outsourcing, vertical integration, mergers or acquisitions. It is not only businesses that undergo restructuring, but recently also higher education institutions. The South African higher education system has undergone a complex restructuring process of merging universities, technikons, colleges and technical schools. This transformation of higher education in South Africa has been regulated by the Higher Education Act (101 of 1997). This restructuring took form of mergers between technikons and universities to form new higher education institutions and has been directed at correcting past educational discrimination and at ensuring equal opportunities for higher education. High levels of negativity, demoralization, demotivation and disempowerment due to higher-education restructuring have been reported, not only in South Africa, but also in other countries. Despite the above-mentioned problems identified in the restructuring of higher education world-wide, a lack of quantitative research appears to exist on the human dimension involved in the process. The main objective of the study is to improve the strategic management of the post-merger process at higher education institutions in South Africa by investigating what influence the present restructuring process exerts on the motivation, organisational commitment and job performance of their staff. The sample consisted of three hundred and twenty-nine (329) staff members from the three merged universities in South Africa. The empirical results revealed the following: To improve the strategic management of the post-merger process at universities, management needs to focus on the managing of organisational commitment, as it is the strongest determinant of the employees’ performance intent; To manage organisation commitment, management must manage especially the employees’ identification with the organisational culture of the new institutions; after organisational commitment, management must focus on employee motivation which includes increasing the employees’ satisfaction with their remuneration packages, their peer relations and their growth factors; and, To manage the employees’ identification with the organisational culture of the new institutions, management must manage employees’ perceptions about increased student access, successes in merger goal achievement and fairness of workload dispensations. The main contribution of the study is the empirical support produced for elements which should be focused upon in strategy execution, namely the interplay among employee job performance, organizational commitment, organizational culture identification and motivational rewards. By doing so, the study provided the empirical foundation for a model that could be used to strategically manage the post-merger process at universities.
- Full Text:
- Date Issued: 2009
- Authors: Stofile, Regina Ntongolozi
- Date: 2009
- Subjects: Strategic planning -- Universities , Strategic planning -- Universities and colleges -- South Africa , Mergers -- Universities and colleges -- South Africa , Strategic planning -- Education (Higher)
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:9311 , http://hdl.handle.net/10948/d1018798
- Description: In reaction to intense global competition and increased customer demands, business firms are continuously engaged in activities to increase the effectiveness of their businesses. To be effective business firms must reduce costs, improve the quality of their products and respond quickly to the new opportunities in the market place. These activities often require the restructuring of such businesses. The restructuring of businesses often takes the form of strategic alliances, outsourcing, vertical integration, mergers or acquisitions. It is not only businesses that undergo restructuring, but recently also higher education institutions. The South African higher education system has undergone a complex restructuring process of merging universities, technikons, colleges and technical schools. This transformation of higher education in South Africa has been regulated by the Higher Education Act (101 of 1997). This restructuring took form of mergers between technikons and universities to form new higher education institutions and has been directed at correcting past educational discrimination and at ensuring equal opportunities for higher education. High levels of negativity, demoralization, demotivation and disempowerment due to higher-education restructuring have been reported, not only in South Africa, but also in other countries. Despite the above-mentioned problems identified in the restructuring of higher education world-wide, a lack of quantitative research appears to exist on the human dimension involved in the process. The main objective of the study is to improve the strategic management of the post-merger process at higher education institutions in South Africa by investigating what influence the present restructuring process exerts on the motivation, organisational commitment and job performance of their staff. The sample consisted of three hundred and twenty-nine (329) staff members from the three merged universities in South Africa. The empirical results revealed the following: To improve the strategic management of the post-merger process at universities, management needs to focus on the managing of organisational commitment, as it is the strongest determinant of the employees’ performance intent; To manage organisation commitment, management must manage especially the employees’ identification with the organisational culture of the new institutions; after organisational commitment, management must focus on employee motivation which includes increasing the employees’ satisfaction with their remuneration packages, their peer relations and their growth factors; and, To manage the employees’ identification with the organisational culture of the new institutions, management must manage employees’ perceptions about increased student access, successes in merger goal achievement and fairness of workload dispensations. The main contribution of the study is the empirical support produced for elements which should be focused upon in strategy execution, namely the interplay among employee job performance, organizational commitment, organizational culture identification and motivational rewards. By doing so, the study provided the empirical foundation for a model that could be used to strategically manage the post-merger process at universities.
- Full Text:
- Date Issued: 2009
In vitro effects of endogenous and exogenous cannabinoids on insulin resistance and secretion
- Authors: Gallant, Megan
- Date: 2009
- Subjects: Cannabinoids , Cannabis , Insulin resistance
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10324 , http://hdl.handle.net/10948/1076 , Cannabinoids , Cannabis , Insulin resistance
- Description: Type 2 diabetes mellitus results from a combination of insulin resistance and impaired insulin secretion. The aim of this study is to investigate the effect of endogenous and exogenous cannabinoids on insulin resistant cell lines, viz skeletal muscle (C2C12) and fat (3T3-L1), and to investigate the effects of these cannabinoids on insulin secretion in pancreatic β-cells (INS 1). Insulin resistance was induced in the cells using 20 ng/mL TNF-α (3T3-L1) and 100 nM insulin (C2C12). Insulin resistant cells were exposed to cannabinoids for 48 hours after which glucose uptake, RT-PCR and Western blot analysis was performed. Additionally, adipokine assays were performed on the 3T3-L1 cells. The insulin resistant 3T3-L1 and C2C12 cells had reduced glucose uptake, decreased IRS-1 and Glut-4 expression indicative of an insulin resistant state. The extract and THC significantly enhanced glucose uptake, IRS-1 and Glut-4 in 3T3-L1 and C2C12 cells. The extract and THC thus have the potential to be an insulin sensitizing agent. Interleukin-6 was significantly decreased by THC. INS 1 cells, cultured under normoglycemic conditions, were exposed to cannabinoids for 48 hours after which glucose-stimulated insulin secretion, radioimmunoassay, oxygen consumption, RT-PCR and Western blot analysis was performed. Insulin stimulatory index was not significantly affected after cannabinoid exposure, except by THC. The cannabinoids decreased insulin content, in a concentration dependent manner, but the inhibition mechanism remains elusive. The cannabinoid Treated cells showed insulin gene expression levels similar to the control, while only THC proved effective in significantly stimulating Glut-2 gene expression. Oxygen consumption studies showed levels lower than the control cells. Most of the cannabinoids inhibited insulin secretion under normoglycemia except THC, while the cannabinoids exhibited the potential to improve insulin resistant adipocyte and myocytes response to glucose and gene regulation.
- Full Text:
- Date Issued: 2009
- Authors: Gallant, Megan
- Date: 2009
- Subjects: Cannabinoids , Cannabis , Insulin resistance
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10324 , http://hdl.handle.net/10948/1076 , Cannabinoids , Cannabis , Insulin resistance
- Description: Type 2 diabetes mellitus results from a combination of insulin resistance and impaired insulin secretion. The aim of this study is to investigate the effect of endogenous and exogenous cannabinoids on insulin resistant cell lines, viz skeletal muscle (C2C12) and fat (3T3-L1), and to investigate the effects of these cannabinoids on insulin secretion in pancreatic β-cells (INS 1). Insulin resistance was induced in the cells using 20 ng/mL TNF-α (3T3-L1) and 100 nM insulin (C2C12). Insulin resistant cells were exposed to cannabinoids for 48 hours after which glucose uptake, RT-PCR and Western blot analysis was performed. Additionally, adipokine assays were performed on the 3T3-L1 cells. The insulin resistant 3T3-L1 and C2C12 cells had reduced glucose uptake, decreased IRS-1 and Glut-4 expression indicative of an insulin resistant state. The extract and THC significantly enhanced glucose uptake, IRS-1 and Glut-4 in 3T3-L1 and C2C12 cells. The extract and THC thus have the potential to be an insulin sensitizing agent. Interleukin-6 was significantly decreased by THC. INS 1 cells, cultured under normoglycemic conditions, were exposed to cannabinoids for 48 hours after which glucose-stimulated insulin secretion, radioimmunoassay, oxygen consumption, RT-PCR and Western blot analysis was performed. Insulin stimulatory index was not significantly affected after cannabinoid exposure, except by THC. The cannabinoids decreased insulin content, in a concentration dependent manner, but the inhibition mechanism remains elusive. The cannabinoid Treated cells showed insulin gene expression levels similar to the control, while only THC proved effective in significantly stimulating Glut-2 gene expression. Oxygen consumption studies showed levels lower than the control cells. Most of the cannabinoids inhibited insulin secretion under normoglycemia except THC, while the cannabinoids exhibited the potential to improve insulin resistant adipocyte and myocytes response to glucose and gene regulation.
- Full Text:
- Date Issued: 2009
Investigating customer service excellence at Lakeside Spar
- Authors: Meyer, Warren Carlo
- Date: 2009
- Subjects: Consumer satisfaction , Customer services , Customer relations management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8700 , http://hdl.handle.net/10948/1016 , Consumer satisfaction , Customer services , Customer relations management
- Description: Service delivery is critical to the customer’s perception of value and is core to the success of an organisation. Excellent customer service incorporates the critical aspects of: expedient service delivery; open and honest communication; individual, personalised service; engendering customer loyalty; problem-solving; under-promising and over-delivering; meeting and exceeding expectations; efficient use of infrastructure, systems and procedures to facilitate efficient operations and, in particular, effective use of knowledge management with a focus on customer lifecycle care (Kingstone, 2004, 2005; Zarbock, 2006). Best-practice organisations now use Customer Relationship Management (CRM) programmes that are customer-centric based in order to ensure excellent customer service delivery. Recently, organisations such as Tesco and Nordstrom have adopted customer-centric CRM successfully, providing concrete proof that this CRM model is sustainable and that it produces the highly lucrative win-win benefits which organisations seek (Beasty, 2005; Hallberg, 2001:19; Gratehouse, 2002; Rowe, 2002). 5 Glossary • Continuous improvement: an approach to improving performance which assumes more and smaller incremental improvement steps (Pycraft, Singh, Phihlela, Slack, Chambers, Harland, Harrison, & Johnston, 2002); • Connectivity: the ability to communicate with another system or piece of hardware or software, or with an internet site (Encarta World English Dictionary); • Customer-centric: the use of every touch-point to stimulate interest, close business, satisfy a need or demonstrate commitment to the customer relationship (Gianforte, 2005); • Customer expectations: the customer's perception of the quality of service (LeBoeuf, 1991) and value (Thompson, 2004); • Customer Experience Management: managing customer interactions to build brand equity and long-term profitability (Thompson, 2006a); • Customer lifecycle care: to ensure that every touch-point fulfils its value-potential, regardless of whether the interaction happens in marketing, sales or customer service (Gianforte, 2005); • Customer loyalty: customer’s attitudes and behaviour relating to their perception of value at every touch-point where they feel welcome, important and valued (Thompson, 2004); • Customer Relationship.
- Full Text:
- Date Issued: 2009
- Authors: Meyer, Warren Carlo
- Date: 2009
- Subjects: Consumer satisfaction , Customer services , Customer relations management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8700 , http://hdl.handle.net/10948/1016 , Consumer satisfaction , Customer services , Customer relations management
- Description: Service delivery is critical to the customer’s perception of value and is core to the success of an organisation. Excellent customer service incorporates the critical aspects of: expedient service delivery; open and honest communication; individual, personalised service; engendering customer loyalty; problem-solving; under-promising and over-delivering; meeting and exceeding expectations; efficient use of infrastructure, systems and procedures to facilitate efficient operations and, in particular, effective use of knowledge management with a focus on customer lifecycle care (Kingstone, 2004, 2005; Zarbock, 2006). Best-practice organisations now use Customer Relationship Management (CRM) programmes that are customer-centric based in order to ensure excellent customer service delivery. Recently, organisations such as Tesco and Nordstrom have adopted customer-centric CRM successfully, providing concrete proof that this CRM model is sustainable and that it produces the highly lucrative win-win benefits which organisations seek (Beasty, 2005; Hallberg, 2001:19; Gratehouse, 2002; Rowe, 2002). 5 Glossary • Continuous improvement: an approach to improving performance which assumes more and smaller incremental improvement steps (Pycraft, Singh, Phihlela, Slack, Chambers, Harland, Harrison, & Johnston, 2002); • Connectivity: the ability to communicate with another system or piece of hardware or software, or with an internet site (Encarta World English Dictionary); • Customer-centric: the use of every touch-point to stimulate interest, close business, satisfy a need or demonstrate commitment to the customer relationship (Gianforte, 2005); • Customer expectations: the customer's perception of the quality of service (LeBoeuf, 1991) and value (Thompson, 2004); • Customer Experience Management: managing customer interactions to build brand equity and long-term profitability (Thompson, 2006a); • Customer lifecycle care: to ensure that every touch-point fulfils its value-potential, regardless of whether the interaction happens in marketing, sales or customer service (Gianforte, 2005); • Customer loyalty: customer’s attitudes and behaviour relating to their perception of value at every touch-point where they feel welcome, important and valued (Thompson, 2004); • Customer Relationship.
- Full Text:
- Date Issued: 2009
Investigating relationships between mathematics teachers' content knowledge, their pedagogical knowledge and their learnes' achievement in terms of functions and graphs
- Authors: Stewart, Joyce
- Date: 2009
- Subjects: Mathematics -- Study and teaching -- South Africa , Mathematics teachers -- Training of -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9515 , http://hdl.handle.net/10948/1100 , Mathematics -- Study and teaching -- South Africa , Mathematics teachers -- Training of -- South Africa
- Description: This study used diagnostic tests, questionnaires and interviews to investigate explore teachers’ subject content knowledge (SCK) and pedagogical subject knowledge (PCK). It also explored teachers’ and learners’ misconceptions within the topic of graphicacy and how teachers’ SCK and PCK possibly affect learner achievement. A small sample of teachers were drawn from the Keiskammahoek region; a deep rural area of the Eastern Cape. These teachers were part of the Nelson Mandela Metropolitan University (NMMU) Amathole Cluster Schools Project who were registered for a three-year BEd (FET) in-service programme in mathematics education. As part of the programme they studied mathematics 1 and 2 at university level and received quarterly non-formal workshops on teaching mathematics at FET level. The findings of this study suggest that teachers with insufficient SCK will probably have limited PCK, although the two are not entirely dependent on each other. In cases where teachers’ displayed low levels of SCK and PCK, their learners were more likely to perform poorly and their results often indicated similar misconceptions as displayed by their teachers. This implies that we have to look at what teachers know and what they need to know in terms of SCK and PCK if we are to plan effectively for effective teacher development aimed at improving learner performance.
- Full Text:
- Date Issued: 2009
- Authors: Stewart, Joyce
- Date: 2009
- Subjects: Mathematics -- Study and teaching -- South Africa , Mathematics teachers -- Training of -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9515 , http://hdl.handle.net/10948/1100 , Mathematics -- Study and teaching -- South Africa , Mathematics teachers -- Training of -- South Africa
- Description: This study used diagnostic tests, questionnaires and interviews to investigate explore teachers’ subject content knowledge (SCK) and pedagogical subject knowledge (PCK). It also explored teachers’ and learners’ misconceptions within the topic of graphicacy and how teachers’ SCK and PCK possibly affect learner achievement. A small sample of teachers were drawn from the Keiskammahoek region; a deep rural area of the Eastern Cape. These teachers were part of the Nelson Mandela Metropolitan University (NMMU) Amathole Cluster Schools Project who were registered for a three-year BEd (FET) in-service programme in mathematics education. As part of the programme they studied mathematics 1 and 2 at university level and received quarterly non-formal workshops on teaching mathematics at FET level. The findings of this study suggest that teachers with insufficient SCK will probably have limited PCK, although the two are not entirely dependent on each other. In cases where teachers’ displayed low levels of SCK and PCK, their learners were more likely to perform poorly and their results often indicated similar misconceptions as displayed by their teachers. This implies that we have to look at what teachers know and what they need to know in terms of SCK and PCK if we are to plan effectively for effective teacher development aimed at improving learner performance.
- Full Text:
- Date Issued: 2009
Investigating the use of the ITIL framework towards IT services delivery at the NMMU
- Authors: Lubambo, Nontobeko
- Date: 2009
- Subjects: Information technology -- Management , Management information systems , Computer industry -- Customer services -- Management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9767 , http://hdl.handle.net/10948/1001 , http://hdl.handle.net/10948/d1009657 , Information technology -- Management , Management information systems , Computer industry -- Customer services -- Management
- Description: The purpose of this research was to investigate what is involved in IT Service Management and how the NMMU can implement it to improve the quality of IT service support and service delivery. The IT Service Management approach was investigated but the main focus was on the Service Support and Service Delivery in the ITIL framework. Higher Education was analyzed to try and measure the maturity level of the ITIL process implementation to see where Higher Education in South Africa is and to determine the gaps. Findings from the empirical study will be presented and recommendations highlighted to Top management and the IT department in order to promote and improve the quality of the IT service being delivered to users and customers. The data was collected and administered by means of a structured questionnaire based on the ITIL Service Capacity Maturity Model and Rick Leopoldi’s alternative Maturity Assessment method. An Association of South African University Directors of Information Technology (ASAUDIT) questionnaire on Service Management was also used to supplement the questionnaire. It was discovered that the implementation of ITIL in most organizations brought about improvements and benefits in the quality of the IT service being delivered.
- Full Text:
- Date Issued: 2009
- Authors: Lubambo, Nontobeko
- Date: 2009
- Subjects: Information technology -- Management , Management information systems , Computer industry -- Customer services -- Management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9767 , http://hdl.handle.net/10948/1001 , http://hdl.handle.net/10948/d1009657 , Information technology -- Management , Management information systems , Computer industry -- Customer services -- Management
- Description: The purpose of this research was to investigate what is involved in IT Service Management and how the NMMU can implement it to improve the quality of IT service support and service delivery. The IT Service Management approach was investigated but the main focus was on the Service Support and Service Delivery in the ITIL framework. Higher Education was analyzed to try and measure the maturity level of the ITIL process implementation to see where Higher Education in South Africa is and to determine the gaps. Findings from the empirical study will be presented and recommendations highlighted to Top management and the IT department in order to promote and improve the quality of the IT service being delivered to users and customers. The data was collected and administered by means of a structured questionnaire based on the ITIL Service Capacity Maturity Model and Rick Leopoldi’s alternative Maturity Assessment method. An Association of South African University Directors of Information Technology (ASAUDIT) questionnaire on Service Management was also used to supplement the questionnaire. It was discovered that the implementation of ITIL in most organizations brought about improvements and benefits in the quality of the IT service being delivered.
- Full Text:
- Date Issued: 2009
Investigation and prediction of autoignition during hot start conditions
- Authors: Wodausch, Jens
- Date: 2009
- Subjects: Automobiles -- Ignition
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9621 , http://hdl.handle.net/10948/991 , Automobiles -- Ignition
- Description: This Master’s thesis discusses the investigation of autoignition (knock) of air-fuel mixtures in internal combustion engines (type EA 827; 1.6 and 1.4 l) under hot start conditions. Chapter Three comprehensively reviews literature on fuel characteristics; specifically boiling point, chemistry and the difference between the Research and Motor Octane Number (RON and MON). Furthermore different types of autoignition are discussed with regards to their detection and assessment in the chapter. The subsection on engine management looks at possible methods of altering and eliminating autoignition. Chapter Four details the equipment used to obtain data and measurements, as well as the signal conditioning of the spark and injector signal. Chapter Five discusses the actual results obtained during summer testing of the different methods of altering and eliminating autoignition in an internal combustion engine, as derived from the theories presented in Chapter Three. The summer tests finally verified the new application level and showed that only a reduction in the quantity of fuel injected can eliminate autoignition. However, a slight decrease in heat release does cause an increase in start time. In Chapter Six, based on the test results, a simulation model which calculates the probability of autoignition in a 1.4 l (Econo) engine during hot start conditions in Matlab/Simulink was developed. This simulation model satisfactorily verified test results.
- Full Text:
- Date Issued: 2009
- Authors: Wodausch, Jens
- Date: 2009
- Subjects: Automobiles -- Ignition
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9621 , http://hdl.handle.net/10948/991 , Automobiles -- Ignition
- Description: This Master’s thesis discusses the investigation of autoignition (knock) of air-fuel mixtures in internal combustion engines (type EA 827; 1.6 and 1.4 l) under hot start conditions. Chapter Three comprehensively reviews literature on fuel characteristics; specifically boiling point, chemistry and the difference between the Research and Motor Octane Number (RON and MON). Furthermore different types of autoignition are discussed with regards to their detection and assessment in the chapter. The subsection on engine management looks at possible methods of altering and eliminating autoignition. Chapter Four details the equipment used to obtain data and measurements, as well as the signal conditioning of the spark and injector signal. Chapter Five discusses the actual results obtained during summer testing of the different methods of altering and eliminating autoignition in an internal combustion engine, as derived from the theories presented in Chapter Three. The summer tests finally verified the new application level and showed that only a reduction in the quantity of fuel injected can eliminate autoignition. However, a slight decrease in heat release does cause an increase in start time. In Chapter Six, based on the test results, a simulation model which calculates the probability of autoignition in a 1.4 l (Econo) engine during hot start conditions in Matlab/Simulink was developed. This simulation model satisfactorily verified test results.
- Full Text:
- Date Issued: 2009
Investigation of device and performance parameters of photovoltaic devices
- Macabebe, Erees Queen Barrido
- Authors: Macabebe, Erees Queen Barrido
- Date: 2009
- Subjects: Photovoltaic cells , Solar cells , Photovoltaic power systems , Photovoltaic power generation
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10538 , http://hdl.handle.net/10948/1003 , http://hdl.handle.net/10948/d1012890 , Photovoltaic cells , Solar cells , Photovoltaic power systems , Photovoltaic power generation
- Description: In order to investigate the influence of parasitic resistances, saturation current and diode ideality factor on the performance of photovoltaic devices, parameter extraction routines employing the standard iteration (SI) method and the particle swarm optimization (PSO) method were developed to extract the series resistance, shunt resistance, saturation current and ideality factor from the I-V characteristics of solar cells and PV modules. The well-known one- and two-diode models were used to describe the behavior of the I-V curve and the parameters of the models were determined by approximation and iteration techniques. The SI and the PSO extraction programmes were used to assess the suitability of the one- and the two-diode solar cell models in describing the I-V characteristics of mono- and multicrystalline silicon solar cells, CISS- and CIGSS-based solar cells. This exercise revealed that the two-diode model provides more information regarding the different processes involved in solar cell operation. Between the two methods developed, the PSO method is faster, yielded fitted curves with lower standard deviation of residuals and, therefore, was the preferred extraction method. The PSO method was then used to extract the device parameters of CISS-based solar cells with the CISS layer selenized under different selenization process conditions and CIGSS-based solar cells with varying i-ZnO layer thickness. For the CISS-based solar cells, the detrimental effect of parasitic resistances on device performance increased when the temperature and duration of the selenization process was increased. For the CIGSS-based devices, photogeneration improved with increasing i-ZnO layer thickness. At high forward bias, bulk recombination and/or tunneling-assisted recombination were the dominant processes affecting the I-V characteristics of the devices. v Lastly, device and performance parameters of mono-, multicrystalline silicon and CIS modules derived from I-V characteristics obtained under dark and illuminated conditions were analyzed considering the effects of temperature on the performance of the devices. Results showed that the effects of parasitic resistances are greater under illumination and, under outdoor conditions, the values further declined due to increasing temperature. The saturation current and ideality factor also increased under outdoor conditions which suggest increased recombination and, coupled with the adverse effects of parasitic resistances, these factors result in lower FF and lower maximum power point. Analysis performed on crystalline silicon and thin film devices utilized in this study revealed that parameter extraction from I-V characteristics of photovoltaic devices and, in particular, the implementation of PSO in solar cell device parameter extraction developed in this work is a useful characterization technique.
- Full Text:
- Date Issued: 2009
- Authors: Macabebe, Erees Queen Barrido
- Date: 2009
- Subjects: Photovoltaic cells , Solar cells , Photovoltaic power systems , Photovoltaic power generation
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10538 , http://hdl.handle.net/10948/1003 , http://hdl.handle.net/10948/d1012890 , Photovoltaic cells , Solar cells , Photovoltaic power systems , Photovoltaic power generation
- Description: In order to investigate the influence of parasitic resistances, saturation current and diode ideality factor on the performance of photovoltaic devices, parameter extraction routines employing the standard iteration (SI) method and the particle swarm optimization (PSO) method were developed to extract the series resistance, shunt resistance, saturation current and ideality factor from the I-V characteristics of solar cells and PV modules. The well-known one- and two-diode models were used to describe the behavior of the I-V curve and the parameters of the models were determined by approximation and iteration techniques. The SI and the PSO extraction programmes were used to assess the suitability of the one- and the two-diode solar cell models in describing the I-V characteristics of mono- and multicrystalline silicon solar cells, CISS- and CIGSS-based solar cells. This exercise revealed that the two-diode model provides more information regarding the different processes involved in solar cell operation. Between the two methods developed, the PSO method is faster, yielded fitted curves with lower standard deviation of residuals and, therefore, was the preferred extraction method. The PSO method was then used to extract the device parameters of CISS-based solar cells with the CISS layer selenized under different selenization process conditions and CIGSS-based solar cells with varying i-ZnO layer thickness. For the CISS-based solar cells, the detrimental effect of parasitic resistances on device performance increased when the temperature and duration of the selenization process was increased. For the CIGSS-based devices, photogeneration improved with increasing i-ZnO layer thickness. At high forward bias, bulk recombination and/or tunneling-assisted recombination were the dominant processes affecting the I-V characteristics of the devices. v Lastly, device and performance parameters of mono-, multicrystalline silicon and CIS modules derived from I-V characteristics obtained under dark and illuminated conditions were analyzed considering the effects of temperature on the performance of the devices. Results showed that the effects of parasitic resistances are greater under illumination and, under outdoor conditions, the values further declined due to increasing temperature. The saturation current and ideality factor also increased under outdoor conditions which suggest increased recombination and, coupled with the adverse effects of parasitic resistances, these factors result in lower FF and lower maximum power point. Analysis performed on crystalline silicon and thin film devices utilized in this study revealed that parameter extraction from I-V characteristics of photovoltaic devices and, in particular, the implementation of PSO in solar cell device parameter extraction developed in this work is a useful characterization technique.
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- Date Issued: 2009