Online consumers’ product purchasing behaviour, advertising and involvement in fashion consumption in South Africa
- Authors: De Vos, Tania
- Date: 2017
- Subjects: Electronic commerce Retail trade -- South Africa -- Management , Purchasing Consumer behavior -- South Africa Clothing trade -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/46295 , vital:39544
- Description: While store-based fashion retailing continues to be the prevailing channel for South Africans, the country’s consumers are increasingly engaging with products online. It should be noted that online fashion purchasing behaviour does not necessarily follow the traditional consumer behaviour of the brick-and-mortar retailing environment. Therefore, ecommerce organisations are required to investigate the determinants of customer online shopping engagement among their market segments. With an improved understanding of the consumer’s online purchase behaviour, pure-play fashion retailers can create useful and successful online shopping strategies to attract new and potential customers. Thus, the future market for this industry as well as factors influencing online behaviour must be investigated and improved upon. This research study aimed to present a general overview and analysis of how online fashion consumption can grow and be sustainable in South Africa. This was accomplished by identifying various key factors contributing toward online fashion consumption and purchasing behaviour, in creating an attractive online shopping environment, whilst generating more customers, building customer loyalty and increasing competitiveness. As in any retail business, customer satisfaction is the key component for online fashion success. The purpose of this study was to execute a novel assessment of online consumers’ product purchasing behaviour, as well as advertising and involvement in fashion consumption in the South African context. To achieve this purpose, an in-depth literature review and a positivistic research investigation were conducted. The selected method was the most appropriate approach to achieve the research objectives by answering the research questions as well as to test the proposed hypotheses in relation to The Perceived Success of Online Fashion Consumption (dependant variables). As mentioned, the study involved a deductive approach of the positivistic paradigm to identify online purchasing motivation and factors that can assist with indicating what the pure-play fashion interface needs to deliver to stay competitive and increase market presence. This research study is considerably valuable as data from 16087 respondents from the participating pure-play fashion retailer have been recorded and the results indicated that the proposed hypotheses were all supported, thus reporting a significant relationship and positive influence on the perceived success of online fashion consumption.
- Full Text:
- Date Issued: 2017
- Authors: De Vos, Tania
- Date: 2017
- Subjects: Electronic commerce Retail trade -- South Africa -- Management , Purchasing Consumer behavior -- South Africa Clothing trade -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/46295 , vital:39544
- Description: While store-based fashion retailing continues to be the prevailing channel for South Africans, the country’s consumers are increasingly engaging with products online. It should be noted that online fashion purchasing behaviour does not necessarily follow the traditional consumer behaviour of the brick-and-mortar retailing environment. Therefore, ecommerce organisations are required to investigate the determinants of customer online shopping engagement among their market segments. With an improved understanding of the consumer’s online purchase behaviour, pure-play fashion retailers can create useful and successful online shopping strategies to attract new and potential customers. Thus, the future market for this industry as well as factors influencing online behaviour must be investigated and improved upon. This research study aimed to present a general overview and analysis of how online fashion consumption can grow and be sustainable in South Africa. This was accomplished by identifying various key factors contributing toward online fashion consumption and purchasing behaviour, in creating an attractive online shopping environment, whilst generating more customers, building customer loyalty and increasing competitiveness. As in any retail business, customer satisfaction is the key component for online fashion success. The purpose of this study was to execute a novel assessment of online consumers’ product purchasing behaviour, as well as advertising and involvement in fashion consumption in the South African context. To achieve this purpose, an in-depth literature review and a positivistic research investigation were conducted. The selected method was the most appropriate approach to achieve the research objectives by answering the research questions as well as to test the proposed hypotheses in relation to The Perceived Success of Online Fashion Consumption (dependant variables). As mentioned, the study involved a deductive approach of the positivistic paradigm to identify online purchasing motivation and factors that can assist with indicating what the pure-play fashion interface needs to deliver to stay competitive and increase market presence. This research study is considerably valuable as data from 16087 respondents from the participating pure-play fashion retailer have been recorded and the results indicated that the proposed hypotheses were all supported, thus reporting a significant relationship and positive influence on the perceived success of online fashion consumption.
- Full Text:
- Date Issued: 2017
Online mentoring as a transformative tool for female career and business development
- Authors: Oosthuizen, Nadine
- Date: 2017
- Subjects: Mentoring in business -- South Africa Glass ceiling (Employment discrimination) -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/20510 , vital:29301
- Description: The under-representation of females at management level due to the glass ceiling effect has globally received considerable attention. Research found that one of the remedies for females to progress beyond the glass ceiling, was access to a mentor in senior management. Females receiving mentoring in the workplace perform at greater levels as they gain reflected power, advise and the right to use essential resources. Yet, access to mentors was recognised as a barrier to females’ professional career success, both in the corporate field and to develop their small businesses. Fortunately, the revolution in technology has led to online mentoring which combines conventional mentoring relationship approaches with new technology and provides wider access to a pool of mentors. The increasing popularity of online mentoring can be attributed to the benefits it offers stereotyped individuals and those from marginalised groups. The purpose of this study therefore was to ascertain the enabling conditions necessary for effective online mentoring in South Africa, as well as how it can be used to develop the careers of females (both corporate employees and small business entrepreneurs). The study followed a mixed method approach with a sequential exploratory design. Background literature on conventional mentoring in addition to oniline mentoring assisted in contextualising the many issues relating to conventional mentoring which also apply to online mentoring. Primary data was collected in three phases (two qualitative and one quantitative). The data collection method for phases one and two of the enquiry was interviews with the use of a semi-structured interview schedule and for phase three, a survey via an online structured questionnaire. The biographical profiles of the participants interviewed during phases one and two were presented as case studies. Based on the content analysis of the qualitative interviews with five South African mentors, six female mentees from Africa, two South African online mentoring field specialists and one United States online mentoring field specialist, three main themes were identified viz. online mentoring processes, challenges and enabling conditions. Online mentoring processes identified for effective online mentoring related to the application-, selection-, matching- and conflict resolution procedures. Mentoring challenges related to matching preferences, technology impediments, cultural fit problems, language differences, lack of mutual trust, scheduling and frequency and duration of meetings, the impersonal nature of online mentoring and specific mentee- and mentor-related challenges. Based on the content analysis, the conditions for creating an effective online mentoring environment addressed some of the challenges alluded to and could be classified as generic, mentee-specific and mentor-specific enablers. Generic online mentoring enablers are those conditions necessary for creating an effective online mentoring environment for the mentoring pair such as the ability to establish a trusting relationship, flexible meeting schedules, training offered, the expression of emotions online, having a technology infrastructure in place, clear objectives and relationship boundaries, a desirable programme- and meeting duration with adequate meetings, using multiple contact methods and following a hybrid mentoring approach. Mentor specific issues to create an effective online mentoring environment are mentors with exceptional personal qualities that are knowledgable and experienced, while mentee specific issues relate to continuous mentee commitment and that mentees should have been previously exposed to mentoring. The constant comparative data analysis provided insight into how similar or dissimilar institutions approach online mentoring process and the challenges related to the local (South African) online mentoring environment as compared to those globally. Sixty-three respondents (South African mentors both male and female and female mentees who have undergone conventional mentoring) completed the online structured questionnaire on their perceptions of the online mentoring conditions necessary for effective online mentoring. From the exploratory factor analysis results of the online survey in phase three of the study, six valid and reliable conditions necessary for online mentoring were identified namely, infrastructure readiness, demographic matching preference, mentor characteristics, the communication process, mentoring pair perceptions and mentoring pair relationship. The multiple regression analysis performed established one statistically significant relationship. The perception that the mentoring pair hold of online mentoring influence the achievements of the mentee. This study has thus identified several conditions necessary for effective online mentoring globally, as well as for South Africa. South Africa has a pool of knowledgeable mentors involved in global online mentoring progammes and they can assist with online mentoring in the South African communities in need of assistance. However, South Africa can learn from well-established global online mentoring institutions how to implement an effective online mentoring programme, but will need the necessary financial resources to do so. This study further provided evidence on how online mentoring can be utilised for the career advancement of female corporate employees and those owning small businesses. Some guidelines were provided on how to overcome the various challenges associated with online mentoring globally, and those specific to South Africa. The use of mobile technology instead of computer-mediated technology was recommended as it provides greater access to online mentoring, especially for rural communities. It is also more user-friendly for those with limited computer technology skills.
- Full Text:
- Date Issued: 2017
- Authors: Oosthuizen, Nadine
- Date: 2017
- Subjects: Mentoring in business -- South Africa Glass ceiling (Employment discrimination) -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/20510 , vital:29301
- Description: The under-representation of females at management level due to the glass ceiling effect has globally received considerable attention. Research found that one of the remedies for females to progress beyond the glass ceiling, was access to a mentor in senior management. Females receiving mentoring in the workplace perform at greater levels as they gain reflected power, advise and the right to use essential resources. Yet, access to mentors was recognised as a barrier to females’ professional career success, both in the corporate field and to develop their small businesses. Fortunately, the revolution in technology has led to online mentoring which combines conventional mentoring relationship approaches with new technology and provides wider access to a pool of mentors. The increasing popularity of online mentoring can be attributed to the benefits it offers stereotyped individuals and those from marginalised groups. The purpose of this study therefore was to ascertain the enabling conditions necessary for effective online mentoring in South Africa, as well as how it can be used to develop the careers of females (both corporate employees and small business entrepreneurs). The study followed a mixed method approach with a sequential exploratory design. Background literature on conventional mentoring in addition to oniline mentoring assisted in contextualising the many issues relating to conventional mentoring which also apply to online mentoring. Primary data was collected in three phases (two qualitative and one quantitative). The data collection method for phases one and two of the enquiry was interviews with the use of a semi-structured interview schedule and for phase three, a survey via an online structured questionnaire. The biographical profiles of the participants interviewed during phases one and two were presented as case studies. Based on the content analysis of the qualitative interviews with five South African mentors, six female mentees from Africa, two South African online mentoring field specialists and one United States online mentoring field specialist, three main themes were identified viz. online mentoring processes, challenges and enabling conditions. Online mentoring processes identified for effective online mentoring related to the application-, selection-, matching- and conflict resolution procedures. Mentoring challenges related to matching preferences, technology impediments, cultural fit problems, language differences, lack of mutual trust, scheduling and frequency and duration of meetings, the impersonal nature of online mentoring and specific mentee- and mentor-related challenges. Based on the content analysis, the conditions for creating an effective online mentoring environment addressed some of the challenges alluded to and could be classified as generic, mentee-specific and mentor-specific enablers. Generic online mentoring enablers are those conditions necessary for creating an effective online mentoring environment for the mentoring pair such as the ability to establish a trusting relationship, flexible meeting schedules, training offered, the expression of emotions online, having a technology infrastructure in place, clear objectives and relationship boundaries, a desirable programme- and meeting duration with adequate meetings, using multiple contact methods and following a hybrid mentoring approach. Mentor specific issues to create an effective online mentoring environment are mentors with exceptional personal qualities that are knowledgable and experienced, while mentee specific issues relate to continuous mentee commitment and that mentees should have been previously exposed to mentoring. The constant comparative data analysis provided insight into how similar or dissimilar institutions approach online mentoring process and the challenges related to the local (South African) online mentoring environment as compared to those globally. Sixty-three respondents (South African mentors both male and female and female mentees who have undergone conventional mentoring) completed the online structured questionnaire on their perceptions of the online mentoring conditions necessary for effective online mentoring. From the exploratory factor analysis results of the online survey in phase three of the study, six valid and reliable conditions necessary for online mentoring were identified namely, infrastructure readiness, demographic matching preference, mentor characteristics, the communication process, mentoring pair perceptions and mentoring pair relationship. The multiple regression analysis performed established one statistically significant relationship. The perception that the mentoring pair hold of online mentoring influence the achievements of the mentee. This study has thus identified several conditions necessary for effective online mentoring globally, as well as for South Africa. South Africa has a pool of knowledgeable mentors involved in global online mentoring progammes and they can assist with online mentoring in the South African communities in need of assistance. However, South Africa can learn from well-established global online mentoring institutions how to implement an effective online mentoring programme, but will need the necessary financial resources to do so. This study further provided evidence on how online mentoring can be utilised for the career advancement of female corporate employees and those owning small businesses. Some guidelines were provided on how to overcome the various challenges associated with online mentoring globally, and those specific to South Africa. The use of mobile technology instead of computer-mediated technology was recommended as it provides greater access to online mentoring, especially for rural communities. It is also more user-friendly for those with limited computer technology skills.
- Full Text:
- Date Issued: 2017
Optical fibre measurement for clock tones in telescope networks
- Authors: Dlamini, Phumla Patience
- Date: 2017
- Subjects: Fiber optics Very large array telescopes
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/22200 , vital:29872
- Description: Astronomy dates back to the early man’s impression of the heavens with little information recorded including some drawings of comets, eclipse and supernovas[1]. Major progress has been made in the field of Astronomy since then. Scientific curiosity to probe the universe in attempt to answer questions such as the origin of the universe, the matter it is made of, the formation of stars, planets and galaxies, and tracking life in other solar systems has brought about the need for more advanced tools capable of detailed observations. In 1608 H. Lippershey developed the first refracting telescope[2], [3]. A year later Galileo used a similar telescope pointing skywards discovering mountains and craters on the earth’s moon, the moons of Jupiter and the phases of Venus. Over the years telescopes have been developed with advancements from the optical telescope towards much larger and more sensitive radio telescopes. The first radio signal from space was detected by Karl Jansky and ever since then astronomers have been using radio telescopes to explore the universe by detecting radio waves emitted by cosmic objects[4]. The ability of radio telescopes to detect weak signals is related to the signal capture surface. As the demand for sensitivity, transmission bandwidth and data rate increases, so does the need for telescopes with a large field of view and capability to observe different parts of the sky at once[5]. This is possible with radio telescope array, with the data from the antennas combined electronically to produce a high resolution image of the sky. The South African MeerKAT radio telescope is an array of 64 interlinked antennas each transmitting up to 160 Gbps of data to the central processing site over optical fibre which is ideal for carrying large volumes of data at high speeds. The MeerKAT telescope is a precursor to the Square kilometer Array which will have up to 50 times the sensitivity and 10000 times the survey speed than the best telescope[6].
- Full Text:
- Date Issued: 2017
- Authors: Dlamini, Phumla Patience
- Date: 2017
- Subjects: Fiber optics Very large array telescopes
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/22200 , vital:29872
- Description: Astronomy dates back to the early man’s impression of the heavens with little information recorded including some drawings of comets, eclipse and supernovas[1]. Major progress has been made in the field of Astronomy since then. Scientific curiosity to probe the universe in attempt to answer questions such as the origin of the universe, the matter it is made of, the formation of stars, planets and galaxies, and tracking life in other solar systems has brought about the need for more advanced tools capable of detailed observations. In 1608 H. Lippershey developed the first refracting telescope[2], [3]. A year later Galileo used a similar telescope pointing skywards discovering mountains and craters on the earth’s moon, the moons of Jupiter and the phases of Venus. Over the years telescopes have been developed with advancements from the optical telescope towards much larger and more sensitive radio telescopes. The first radio signal from space was detected by Karl Jansky and ever since then astronomers have been using radio telescopes to explore the universe by detecting radio waves emitted by cosmic objects[4]. The ability of radio telescopes to detect weak signals is related to the signal capture surface. As the demand for sensitivity, transmission bandwidth and data rate increases, so does the need for telescopes with a large field of view and capability to observe different parts of the sky at once[5]. This is possible with radio telescope array, with the data from the antennas combined electronically to produce a high resolution image of the sky. The South African MeerKAT radio telescope is an array of 64 interlinked antennas each transmitting up to 160 Gbps of data to the central processing site over optical fibre which is ideal for carrying large volumes of data at high speeds. The MeerKAT telescope is a precursor to the Square kilometer Array which will have up to 50 times the sensitivity and 10000 times the survey speed than the best telescope[6].
- Full Text:
- Date Issued: 2017
Optimal cycle dating of large financial time series
- Authors: Kapp, Konrad Phillip
- Date: 2017
- Subjects: Computer algorithms
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/17767 , vital:28452
- Description: The study of cycles in the context of economic time series has been active for many decades, if not centuries; however, it was only in recent decades that more formal approaches for identifying cycles have been developed. Litvine and Bismans (2015) proposed a new approach for dating cycles in financial time series, for purposes of optimising buysell strategies. In this approach, cycle dating is presented as an optimisation problem. They also introduced a method for optimising this problem, known as the hierarchical method (using full evaluation 2, or HR-FE2). However, this method may be impractical for large data sets as it may require unacceptably long computation time. In this study, new procedures that date cycles using the approach proposed by Litvine and Bismans (2015), were introduced, and were speciffically developed to be feasible for large time series data sets. These procedures are the stochastic generation and adaptation (SGA), buy-sell adapted Extrema importance identity sequence retrieval (BSA-EIISR) and buysell adapted bottom-up (BSA-BU) methods. An existing optimisation technique, known as particle swarm optimisation (PSO), was also employed. A statistical comparison was then made between these methods, including HR-FE2. This involved evaluating, on simulated data, the performance of the algorithms in terms of objective function value and computation time on different time series lengths, Hurst exponent, and number of buy-sell points. The SRace methodology (T. Zhang, Georgiopoulos, and Anagnostopoulos 2013) was then applied to these results in order to determine the most effcient methods. It was determined that, statistically, SGA, BSA-EIISR and BSA-BU are the most effcient methods. Number of buysell points was found to have the largest effect on relative performance of these methods. In some cases, the Hurst exponent also has a small effect on relative performance.
- Full Text:
- Date Issued: 2017
- Authors: Kapp, Konrad Phillip
- Date: 2017
- Subjects: Computer algorithms
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/17767 , vital:28452
- Description: The study of cycles in the context of economic time series has been active for many decades, if not centuries; however, it was only in recent decades that more formal approaches for identifying cycles have been developed. Litvine and Bismans (2015) proposed a new approach for dating cycles in financial time series, for purposes of optimising buysell strategies. In this approach, cycle dating is presented as an optimisation problem. They also introduced a method for optimising this problem, known as the hierarchical method (using full evaluation 2, or HR-FE2). However, this method may be impractical for large data sets as it may require unacceptably long computation time. In this study, new procedures that date cycles using the approach proposed by Litvine and Bismans (2015), were introduced, and were speciffically developed to be feasible for large time series data sets. These procedures are the stochastic generation and adaptation (SGA), buy-sell adapted Extrema importance identity sequence retrieval (BSA-EIISR) and buysell adapted bottom-up (BSA-BU) methods. An existing optimisation technique, known as particle swarm optimisation (PSO), was also employed. A statistical comparison was then made between these methods, including HR-FE2. This involved evaluating, on simulated data, the performance of the algorithms in terms of objective function value and computation time on different time series lengths, Hurst exponent, and number of buy-sell points. The SRace methodology (T. Zhang, Georgiopoulos, and Anagnostopoulos 2013) was then applied to these results in order to determine the most effcient methods. It was determined that, statistically, SGA, BSA-EIISR and BSA-BU are the most effcient methods. Number of buysell points was found to have the largest effect on relative performance of these methods. In some cases, the Hurst exponent also has a small effect on relative performance.
- Full Text:
- Date Issued: 2017
Optimisation of a mini horizontal axis wind turbine to increase energy yield during short duration wind variations
- Authors: Poole, Sean Nichola
- Date: 2017
- Subjects: Wind turbines -- Design and construction , Horizontal axis wind turbines -- Blades , Wind turbines -- Aerodynamics , Wind power
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/7036 , vital:21196
- Description: The typical methodology for analytically designing a wind turbine blade is by means of blade element momentum (BEM) theory, whereby the aerofoil angle of attack is optimized to achieve a maximum lift-to-drag ratio. This research aims to show that an alternative optimisation methodology could yield better results, especially in gusty and turbulent wind conditions. This alternative method looks at increasing the aerofoil Reynolds number by increasing the aerofoil chord length. The increased Reynolds number generally increases the e_ectiveness of the aerofoil which would result in a higher or similar lift-to-drag ratio (even at the decreased angle of attacked require to maintain the turbine thrust coe_cient). The bene_t of this design is a atter power curve which causes the turbine to be less sensitive to uctuating winds. Also, the turbine has more torque at startup, allowing for operatation in lower wind speeds. This research is assumed to only be applicable to small wind turbines which operated in a low Reynolds number regime (<500 000), where Reynolds number manipulation is most advantageous.
- Full Text:
- Date Issued: 2017
- Authors: Poole, Sean Nichola
- Date: 2017
- Subjects: Wind turbines -- Design and construction , Horizontal axis wind turbines -- Blades , Wind turbines -- Aerodynamics , Wind power
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/7036 , vital:21196
- Description: The typical methodology for analytically designing a wind turbine blade is by means of blade element momentum (BEM) theory, whereby the aerofoil angle of attack is optimized to achieve a maximum lift-to-drag ratio. This research aims to show that an alternative optimisation methodology could yield better results, especially in gusty and turbulent wind conditions. This alternative method looks at increasing the aerofoil Reynolds number by increasing the aerofoil chord length. The increased Reynolds number generally increases the e_ectiveness of the aerofoil which would result in a higher or similar lift-to-drag ratio (even at the decreased angle of attacked require to maintain the turbine thrust coe_cient). The bene_t of this design is a atter power curve which causes the turbine to be less sensitive to uctuating winds. Also, the turbine has more torque at startup, allowing for operatation in lower wind speeds. This research is assumed to only be applicable to small wind turbines which operated in a low Reynolds number regime (<500 000), where Reynolds number manipulation is most advantageous.
- Full Text:
- Date Issued: 2017
Optimising syzygium cordatum dye extraction and subsequent cotton dyeing incorporating organic electrolytes
- Authors: Gamedze, Nombuso Faith
- Date: 2017
- Subjects: Dyes and dyeing -- Cotton Syzygium cordatum
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/19509 , vital:28888
- Description: The present investigation was carried out to optimize the extraction of natural dye from Syzygium cordatum,bark trees and then to evaluate its use in the dyeing of cotton fabric incorporating organic electrolyte. The bark was collected from recently fallen trees and twigs pruned from old trees, since they have greater dye content than the younger trees, dried for two weeks, crushed with a hammer and ground into powder. Grinding of bark was done to ensure a uniform particle size with a large surface area to facilitate quick extraction. The relevant conditions for natural dye extraction using a methanol/water mixture were optimized by Response Surface Methodology (RSM), with the help of Design Expert Version 7.0. The central composite design (CCD) was applied to design experiments for the evaluation of the interactive effects of the three most important operating extracting variables namely, temperature, time and liquor volume on 25g bark powder. This approach decreased the required number of experiments, and the following optimized extraction conditions were derived; temperature 700C, time 51minutes and material-to-liquor ratio 1:16. Dye used for subsequent dyeing was extracted using the optimized conditions. To determine the best conditions for dyeing cotton fabric with the dye extract, dyeing was carried out in a rotating canister machine, using two different organic electrolytes, namely trisodium nitrilo triacetate (trisodium NTA) and dimethylformamide, as mordants. The use of organic electrolytes, as mordants, was to ensure eco-friendliness of the dyeing, and with a maximum concentration of 3g/L being used to reduce the effluent load. Three different mordanting techniques, namely simultaneous, pre-mordanting and post-mordanting were investigated so as to establish which is best. The impact of the two organic electrolyte mordants on certain physical properties of the cotton fabric was also determined. The dyeing of cotton with theSyzygium cordatum bark dye extract, in conjuction with an organic electrolyte, generally showed good results, with trisodium NTA superior to dimethylformamide as a mordant. An increase in trisodium NTA mordant concentration increased dye exhaustion and a dye exhaustion of 23.7% being achieved with 3g/L pre-mordanting. This is still relatively low, however, and the use of an exhausting agent needs to be explored. The fabric dyed with a mordant, exhibited good wash, rub and perspiration fastness, with trisodium NTA superior to dimethylformamide. The use of trisodium NTA increased the strength of the dyed fabric whereas the use of dimethylformamide decreased it. In general, pre- and simultaneous mordants were better than post-mordanting. It has been shown that the dyeing of cotton, using Syzygium cordatum bark dye extract, in conjuction with an organic electrolyte, particulary trisodium NTA, has potential and can be recommended for craft applications. Optimised conditions for dye extraction and cotton dyeing have been derived and which can be recommended for use by crafters in Swaziland.
- Full Text:
- Date Issued: 2017
- Authors: Gamedze, Nombuso Faith
- Date: 2017
- Subjects: Dyes and dyeing -- Cotton Syzygium cordatum
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/19509 , vital:28888
- Description: The present investigation was carried out to optimize the extraction of natural dye from Syzygium cordatum,bark trees and then to evaluate its use in the dyeing of cotton fabric incorporating organic electrolyte. The bark was collected from recently fallen trees and twigs pruned from old trees, since they have greater dye content than the younger trees, dried for two weeks, crushed with a hammer and ground into powder. Grinding of bark was done to ensure a uniform particle size with a large surface area to facilitate quick extraction. The relevant conditions for natural dye extraction using a methanol/water mixture were optimized by Response Surface Methodology (RSM), with the help of Design Expert Version 7.0. The central composite design (CCD) was applied to design experiments for the evaluation of the interactive effects of the three most important operating extracting variables namely, temperature, time and liquor volume on 25g bark powder. This approach decreased the required number of experiments, and the following optimized extraction conditions were derived; temperature 700C, time 51minutes and material-to-liquor ratio 1:16. Dye used for subsequent dyeing was extracted using the optimized conditions. To determine the best conditions for dyeing cotton fabric with the dye extract, dyeing was carried out in a rotating canister machine, using two different organic electrolytes, namely trisodium nitrilo triacetate (trisodium NTA) and dimethylformamide, as mordants. The use of organic electrolytes, as mordants, was to ensure eco-friendliness of the dyeing, and with a maximum concentration of 3g/L being used to reduce the effluent load. Three different mordanting techniques, namely simultaneous, pre-mordanting and post-mordanting were investigated so as to establish which is best. The impact of the two organic electrolyte mordants on certain physical properties of the cotton fabric was also determined. The dyeing of cotton with theSyzygium cordatum bark dye extract, in conjuction with an organic electrolyte, generally showed good results, with trisodium NTA superior to dimethylformamide as a mordant. An increase in trisodium NTA mordant concentration increased dye exhaustion and a dye exhaustion of 23.7% being achieved with 3g/L pre-mordanting. This is still relatively low, however, and the use of an exhausting agent needs to be explored. The fabric dyed with a mordant, exhibited good wash, rub and perspiration fastness, with trisodium NTA superior to dimethylformamide. The use of trisodium NTA increased the strength of the dyed fabric whereas the use of dimethylformamide decreased it. In general, pre- and simultaneous mordants were better than post-mordanting. It has been shown that the dyeing of cotton, using Syzygium cordatum bark dye extract, in conjuction with an organic electrolyte, particulary trisodium NTA, has potential and can be recommended for craft applications. Optimised conditions for dye extraction and cotton dyeing have been derived and which can be recommended for use by crafters in Swaziland.
- Full Text:
- Date Issued: 2017
Optimization of flexible spectrum in optical transport networks
- Boiyo, Duncan Kiboi, Gamatham, Romeo
- Authors: Boiyo, Duncan Kiboi , Gamatham, Romeo
- Date: 2017
- Subjects: Digital communications Optical fiber communication , Optical communications Fiber optics
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/14609 , vital:27803
- Description: The ever-increasing demand for broadband services by end-user devices utilising 3G/4G/LTE and the projected 5G in the last mile will require sustaining broadband supply from fibre-linked terminals. The eventual outcome of the high demand for broadband is strained optical and electronic devices. The backbone optical fibre transport systems and techniques such as dense wavelength division multiplexing (DWDM), higher modulation formats, coherent detection and signal amplification have increased both fibre capacity and spectrum efficiency. A major challenge to fibre capacity and spectrum efficiency is fibre-faults and optical impairments, network management, routing and wavelength assignment (RWA). In this study, DWDM and flexible spectrum techniques such as wavelength assignment and adjustment, wavelength conversion and switching, optical add and drop multiplexing (OADM) and bitrate variable transmission have been experimentally optimized in a laboratory testbed for short- and long-haul optical fibre networks. This work starts by experimentally optimising different transmitters, fibre-types and receivers suitable for implementing cost effective and energy efficient flexible spectrum networks. Vertical cavity surface-emitting lasers (VCSELs) and distributed feedback (DFB) lasers have been studied to provide up to 10 Gb/s per channel in 1310 nm and 1550 nm transmission windows. VCSELs provide wavelength assignment and adjustment. This work utilises the non-return-to-zero (NRZ) on-off keying (OOK) modulation technique and direct detection due to their cost and simplicity. By using positive intrinsic negative (PIN) photo-receivers with error-free BER sensitivity of -18±1 dBm at the acceptable 10-9-bit error rate (BER) threshold level, unamplified transmission distances between 6 km and 76 km have been demonstrated using G.652 and G.655 single mode fibres (SMFs). For the first time, an all optical VCSEL to VCSEL wavelength conversion, switching, transmission at the 1550 nm window and BER evaluation of a NRZ data signal is experimentally demonstrated. With VCSEL wavelength conversion and switching, wavelength adjustments to a spectrum width of 4.8 nm (600 GHz) can be achieved to provide alternative routes to signals when fibre-cuts and wavelength collision occurs therefore enhancing signal continuity. This work also demonstrates a technique of removing and adding a wavelength in a bundle of DWDM and flexible channels using an OADM. This has been implemented using a VCSEL and a fibre Bragg grating (FBG) providing a wavelength isolation ratio of 31.4 dB and ~0.3 𝑑𝐵 add/drop penalty of 8.5 Gb/s signal. As a result, an OADM improves spectrum efficiency by offering wavelength re-use. Optical impairments such as crosstalk, chromatic dispersion (CD) and effects of polarization mode dispersion (PMD) have been experimentally investigated and mitigated. This work showed that crosstalk penalty increased with fibre-length, bitrate, interfering signal power and reduced channel spacing and as a result, a crosstalk-penalty trade-off is required. Effects of CD on a transmitted 10 Gb/s signal were also investigated and its mitigation techniques used to increase the fibre-reach. This work uses the negative dispersion fibres to mitigate the accumulated dispersion over the distance of transmission. A 5 dB sensitivity improvement is reported for an unamplified 76 km using DFB transmitters and combination of NZDSF true-wave reduced slope (TW-RS) and submarine reduced slope (TW-SRS) with + and – dispersion coefficients respectively. We have also demonstrated up to 52 km 10 Gb/s per channel VCSEL-based transmission and reduced net dispersion. Experimental demonstration of forward Raman amplification has achieved a 4.7 dB on-off gain distributed over a 4.8 nm spectral width and a 1.7 dB improvement of receiver sensitivity in Raman-aided 10 Gb/s per wavelength VCSEL transmission. Finally, 4.25-10 Gb/s PON-based point to point (P2P) and point to multipoint (P2MP) broadcast transmission have been experimentally demonstrated. A 10 Gb/s with a 1:8 passive splitter incurred a 3.7 dB penalty for a 24.7 km fibre-link. In summary, this work has demonstrated cost effective and energy efficient potential flexible spectrum techniques for high speed signal transmission. With the optimized network parameters, flexible spectrum is therefore relevant in short-reach, metro-access and long-haul applications for national broadband networks and the Square Kilometre Array (SKA) fibre-based signal and data transmission.
- Full Text:
- Date Issued: 2017
- Authors: Boiyo, Duncan Kiboi , Gamatham, Romeo
- Date: 2017
- Subjects: Digital communications Optical fiber communication , Optical communications Fiber optics
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/14609 , vital:27803
- Description: The ever-increasing demand for broadband services by end-user devices utilising 3G/4G/LTE and the projected 5G in the last mile will require sustaining broadband supply from fibre-linked terminals. The eventual outcome of the high demand for broadband is strained optical and electronic devices. The backbone optical fibre transport systems and techniques such as dense wavelength division multiplexing (DWDM), higher modulation formats, coherent detection and signal amplification have increased both fibre capacity and spectrum efficiency. A major challenge to fibre capacity and spectrum efficiency is fibre-faults and optical impairments, network management, routing and wavelength assignment (RWA). In this study, DWDM and flexible spectrum techniques such as wavelength assignment and adjustment, wavelength conversion and switching, optical add and drop multiplexing (OADM) and bitrate variable transmission have been experimentally optimized in a laboratory testbed for short- and long-haul optical fibre networks. This work starts by experimentally optimising different transmitters, fibre-types and receivers suitable for implementing cost effective and energy efficient flexible spectrum networks. Vertical cavity surface-emitting lasers (VCSELs) and distributed feedback (DFB) lasers have been studied to provide up to 10 Gb/s per channel in 1310 nm and 1550 nm transmission windows. VCSELs provide wavelength assignment and adjustment. This work utilises the non-return-to-zero (NRZ) on-off keying (OOK) modulation technique and direct detection due to their cost and simplicity. By using positive intrinsic negative (PIN) photo-receivers with error-free BER sensitivity of -18±1 dBm at the acceptable 10-9-bit error rate (BER) threshold level, unamplified transmission distances between 6 km and 76 km have been demonstrated using G.652 and G.655 single mode fibres (SMFs). For the first time, an all optical VCSEL to VCSEL wavelength conversion, switching, transmission at the 1550 nm window and BER evaluation of a NRZ data signal is experimentally demonstrated. With VCSEL wavelength conversion and switching, wavelength adjustments to a spectrum width of 4.8 nm (600 GHz) can be achieved to provide alternative routes to signals when fibre-cuts and wavelength collision occurs therefore enhancing signal continuity. This work also demonstrates a technique of removing and adding a wavelength in a bundle of DWDM and flexible channels using an OADM. This has been implemented using a VCSEL and a fibre Bragg grating (FBG) providing a wavelength isolation ratio of 31.4 dB and ~0.3 𝑑𝐵 add/drop penalty of 8.5 Gb/s signal. As a result, an OADM improves spectrum efficiency by offering wavelength re-use. Optical impairments such as crosstalk, chromatic dispersion (CD) and effects of polarization mode dispersion (PMD) have been experimentally investigated and mitigated. This work showed that crosstalk penalty increased with fibre-length, bitrate, interfering signal power and reduced channel spacing and as a result, a crosstalk-penalty trade-off is required. Effects of CD on a transmitted 10 Gb/s signal were also investigated and its mitigation techniques used to increase the fibre-reach. This work uses the negative dispersion fibres to mitigate the accumulated dispersion over the distance of transmission. A 5 dB sensitivity improvement is reported for an unamplified 76 km using DFB transmitters and combination of NZDSF true-wave reduced slope (TW-RS) and submarine reduced slope (TW-SRS) with + and – dispersion coefficients respectively. We have also demonstrated up to 52 km 10 Gb/s per channel VCSEL-based transmission and reduced net dispersion. Experimental demonstration of forward Raman amplification has achieved a 4.7 dB on-off gain distributed over a 4.8 nm spectral width and a 1.7 dB improvement of receiver sensitivity in Raman-aided 10 Gb/s per wavelength VCSEL transmission. Finally, 4.25-10 Gb/s PON-based point to point (P2P) and point to multipoint (P2MP) broadcast transmission have been experimentally demonstrated. A 10 Gb/s with a 1:8 passive splitter incurred a 3.7 dB penalty for a 24.7 km fibre-link. In summary, this work has demonstrated cost effective and energy efficient potential flexible spectrum techniques for high speed signal transmission. With the optimized network parameters, flexible spectrum is therefore relevant in short-reach, metro-access and long-haul applications for national broadband networks and the Square Kilometre Array (SKA) fibre-based signal and data transmission.
- Full Text:
- Date Issued: 2017
Our turn to eat?: an Interrogation of South African media discourse on allocation of value through cadre deployment
- Authors: Mpapela, Vuyo
- Date: 2017
- Subjects: Mass media -- Political aspects -- South Africa Democracy -- South Africa -- Communication , Communication in politics -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/19179 , vital:28781
- Description: South Africa‟s liberal democratic constitution allows for political competition for office, enhanced by the media‟s involvement or role, as both stakeholder and facilitator for debate between the public and political parties. The role of the media becomes a sensitive one as it entails perspectives on the political process and, as a consequence, certain perceptions of the political class, structures and electoral process will emerge. In previous elections the media has been cited for abdicating its objective stance in the narrative on political competition in view of candidate lists, party coalitions and allocation of value through cadre deployment, a term used for political appointments within party structures to positions of leadership in public office. Accordingly, it provokes intense debates in which the rationality of liberal-objective-observer to democratic process is criticized by thinking which argues that such rationality remains trapped by a devotion to „liberalist rituals‟, rituals detached from embedded meanings specific to South Africa‟s socio-political dynamics.
- Full Text:
- Date Issued: 2017
- Authors: Mpapela, Vuyo
- Date: 2017
- Subjects: Mass media -- Political aspects -- South Africa Democracy -- South Africa -- Communication , Communication in politics -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/19179 , vital:28781
- Description: South Africa‟s liberal democratic constitution allows for political competition for office, enhanced by the media‟s involvement or role, as both stakeholder and facilitator for debate between the public and political parties. The role of the media becomes a sensitive one as it entails perspectives on the political process and, as a consequence, certain perceptions of the political class, structures and electoral process will emerge. In previous elections the media has been cited for abdicating its objective stance in the narrative on political competition in view of candidate lists, party coalitions and allocation of value through cadre deployment, a term used for political appointments within party structures to positions of leadership in public office. Accordingly, it provokes intense debates in which the rationality of liberal-objective-observer to democratic process is criticized by thinking which argues that such rationality remains trapped by a devotion to „liberalist rituals‟, rituals detached from embedded meanings specific to South Africa‟s socio-political dynamics.
- Full Text:
- Date Issued: 2017
Parental management of adolescent substance abuse
- Authors: Jarman, Lennon
- Date: 2017
- Subjects: Teenagers -- Substance use -- South Africa -- Port Elizabeth , Parent and child -- South Africa -- Port Elizabeth -- Psychological aspects , Substance abuse -- South Africa -- Port Elizabeth , Youth -- Drug use -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/17625 , vital:28402
- Description: The incidence and consequences of adolescent substance abuse for the health and well-being of adolescents, their significant others and society at large, have become an increasing concern. The early onset of substance use further enhances the potential for addiction, thus emphasizing the need for early identification and intervention. The literature and practice observations suggest that parental management, which includes parenting practices such as parental monitoring, clear rules about substance use and the modelling of protective, constructive behaviours, protects adolescents from the onset of substance use and interrupts the adolescent’s progression to substance abuse. This qualitative study aimed to explore and describe parental management of adolescent substance abuse in the Nelson Mandela Metropole. An exploratory- descriptive and contextual research design was employed in this study. Furthermore, non-probability purposive sampling, in conjunction with snowball sampling techniques, was employed to recruit parents who have or continue to manage their adolescents (between the ages of 13-18 years) substance abuse and the associated impact that it has of on the family in the past year. Semi-structured individual interviews were conducted with ten parents, and data collection ceased upon reaching data saturation. The generated data was analysed using thematic data analysis. The trustworthiness of the research process and the findings was enriched by engaging in a variety of data verification strategies. The following main themes emerged from the data analysis process: Participants’ perspective of adolescent substance use in their community; Participants’ experiences of their own child’s substance use; Impact of substance use on the family system; Participants’ perspective of their role in managing adolescent substance use; and, Participants’ support needs in relation to adolescent substance use. The findings contribute to a greater understanding of what parents require to effectively prevent and/or manage substance abuse by their adolescent children. The findings furthermore recommend preventive interventions at both primary and secondary level.
- Full Text:
- Date Issued: 2017
- Authors: Jarman, Lennon
- Date: 2017
- Subjects: Teenagers -- Substance use -- South Africa -- Port Elizabeth , Parent and child -- South Africa -- Port Elizabeth -- Psychological aspects , Substance abuse -- South Africa -- Port Elizabeth , Youth -- Drug use -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/17625 , vital:28402
- Description: The incidence and consequences of adolescent substance abuse for the health and well-being of adolescents, their significant others and society at large, have become an increasing concern. The early onset of substance use further enhances the potential for addiction, thus emphasizing the need for early identification and intervention. The literature and practice observations suggest that parental management, which includes parenting practices such as parental monitoring, clear rules about substance use and the modelling of protective, constructive behaviours, protects adolescents from the onset of substance use and interrupts the adolescent’s progression to substance abuse. This qualitative study aimed to explore and describe parental management of adolescent substance abuse in the Nelson Mandela Metropole. An exploratory- descriptive and contextual research design was employed in this study. Furthermore, non-probability purposive sampling, in conjunction with snowball sampling techniques, was employed to recruit parents who have or continue to manage their adolescents (between the ages of 13-18 years) substance abuse and the associated impact that it has of on the family in the past year. Semi-structured individual interviews were conducted with ten parents, and data collection ceased upon reaching data saturation. The generated data was analysed using thematic data analysis. The trustworthiness of the research process and the findings was enriched by engaging in a variety of data verification strategies. The following main themes emerged from the data analysis process: Participants’ perspective of adolescent substance use in their community; Participants’ experiences of their own child’s substance use; Impact of substance use on the family system; Participants’ perspective of their role in managing adolescent substance use; and, Participants’ support needs in relation to adolescent substance use. The findings contribute to a greater understanding of what parents require to effectively prevent and/or manage substance abuse by their adolescent children. The findings furthermore recommend preventive interventions at both primary and secondary level.
- Full Text:
- Date Issued: 2017
Perceptions and current practices of Namibian midwives regarding the use of the cardio-tocograph as an informative labour monitoring tool for labouring women
- Authors: Uusiku, Laura Ingashipwa
- Date: 2017
- Subjects: Fetal heart rate monitoring Midwives -- Namibia , Midwifery -- Namibia Hospital patients -- Namibia -- Attitudes Medical care -- Namibia
- Language: English
- Type: Thesis , Masters , MCur
- Identifier: http://hdl.handle.net/10948/21318 , vital:29477
- Description: Labour is a vital period for the labouring mothers, as it should bring with it the fulfilment of an expectation of having the baby that has been awaited. The health of the foetus which is to be born and that of the labouring mother are inextricably linked with each other which is why the labouring mother needs to be assessed and monitored carefully. The cardio-tocograph, which is a globally accepted method of diagnosis and assessment of the foetal status during labour is preferred to be used in monitoring labouring mothers, especially high- risk patients. Despite the evidence and information regarding the effectiveness of the use of the cardio-tocograph, midwives are still found not to be using it correctly, the reasons given that the women not always co-operate; do not keep the electrode and belt in place or cite the discomfort they experience from contraction. The objectives of this study were to: explore and describe the perceptions and current practice of Namibian midwives regarding the use of the cardio-tocograph as an informative labour- monitoring tool. Explore and describe how midwives working in labour wards in Namibia perceive informing laboring women of the use of the cardio-tocograph as an informative labour- monitoring tool and based on the results, develop an instruction guide for midwives working in the labour ward in intermediate hospital in Namibia that would serve as a guide on how to teach labouring women about the use of the cardio-tocograph as a labour- monitoring tool and enhance positive labor and delivery outcomes The study was conducted between May and June 2016, using a qualitative, explorative, descriptive and contextual design, following the necessary university approval and approval from other relevant authorities. The research population was midwives who work in labour wards at a public hospital in Namibia. Semi-structured interviews were used to collect data from purposively sampled participants using set criteria. A voice recorder was used to capture the interview with the permission of the participants. Seventeen midwives were interviewed of whom two were used for the pilot study. Data saturation determined the sufficient sample size. The collected data was analyzed using Tesch’s spiral method of data analysis with the assistance of an independent coder From the research findings, it emerged that midwives had varying perceptions regarding the use of the CTG machine. Midwives still perceive CTG interpretation as a challenge as a labour -monitoring tool and expressed a need for updates. Furthermore, midwives expressed the fact that they had limited communication with labouring women regarding the use of CTG. Based on the research findings and guided by Health Belief Model principles, three main guidelines were developed for midwives working in the labour ward in a public hospital in Namibia. These guidelines will serve as a tool to assist midwives in their teaching of labouring women about the use of the cardio-tocograph as a labour- monitoring tool, and the role to be played by labouring women during that monitoring period. Furthermore, recommendations for clinical nursing practice, nursing education and nursing research were developed. The researcher used literature control to ensure validation and integrity of the study. Trustworthiness, which was used to ensure rigour of the study, was guided by the principles of truth-value, transferability, dependability and confirmability. Ethical considerations were guided by the Belmont report adopting the principles of beneficence, respect for human dignity, justice and non-maleficence.
- Full Text:
- Date Issued: 2017
- Authors: Uusiku, Laura Ingashipwa
- Date: 2017
- Subjects: Fetal heart rate monitoring Midwives -- Namibia , Midwifery -- Namibia Hospital patients -- Namibia -- Attitudes Medical care -- Namibia
- Language: English
- Type: Thesis , Masters , MCur
- Identifier: http://hdl.handle.net/10948/21318 , vital:29477
- Description: Labour is a vital period for the labouring mothers, as it should bring with it the fulfilment of an expectation of having the baby that has been awaited. The health of the foetus which is to be born and that of the labouring mother are inextricably linked with each other which is why the labouring mother needs to be assessed and monitored carefully. The cardio-tocograph, which is a globally accepted method of diagnosis and assessment of the foetal status during labour is preferred to be used in monitoring labouring mothers, especially high- risk patients. Despite the evidence and information regarding the effectiveness of the use of the cardio-tocograph, midwives are still found not to be using it correctly, the reasons given that the women not always co-operate; do not keep the electrode and belt in place or cite the discomfort they experience from contraction. The objectives of this study were to: explore and describe the perceptions and current practice of Namibian midwives regarding the use of the cardio-tocograph as an informative labour- monitoring tool. Explore and describe how midwives working in labour wards in Namibia perceive informing laboring women of the use of the cardio-tocograph as an informative labour- monitoring tool and based on the results, develop an instruction guide for midwives working in the labour ward in intermediate hospital in Namibia that would serve as a guide on how to teach labouring women about the use of the cardio-tocograph as a labour- monitoring tool and enhance positive labor and delivery outcomes The study was conducted between May and June 2016, using a qualitative, explorative, descriptive and contextual design, following the necessary university approval and approval from other relevant authorities. The research population was midwives who work in labour wards at a public hospital in Namibia. Semi-structured interviews were used to collect data from purposively sampled participants using set criteria. A voice recorder was used to capture the interview with the permission of the participants. Seventeen midwives were interviewed of whom two were used for the pilot study. Data saturation determined the sufficient sample size. The collected data was analyzed using Tesch’s spiral method of data analysis with the assistance of an independent coder From the research findings, it emerged that midwives had varying perceptions regarding the use of the CTG machine. Midwives still perceive CTG interpretation as a challenge as a labour -monitoring tool and expressed a need for updates. Furthermore, midwives expressed the fact that they had limited communication with labouring women regarding the use of CTG. Based on the research findings and guided by Health Belief Model principles, three main guidelines were developed for midwives working in the labour ward in a public hospital in Namibia. These guidelines will serve as a tool to assist midwives in their teaching of labouring women about the use of the cardio-tocograph as a labour- monitoring tool, and the role to be played by labouring women during that monitoring period. Furthermore, recommendations for clinical nursing practice, nursing education and nursing research were developed. The researcher used literature control to ensure validation and integrity of the study. Trustworthiness, which was used to ensure rigour of the study, was guided by the principles of truth-value, transferability, dependability and confirmability. Ethical considerations were guided by the Belmont report adopting the principles of beneficence, respect for human dignity, justice and non-maleficence.
- Full Text:
- Date Issued: 2017
Perceptions of nurses with regard to staffing in the operating rooms of a private hospital
- Authors: Kriel, Dora Jenice
- Date: 2017
- Subjects: Primary health care -- South Africa -- Eastern Cape Hospitals -- South Africa -- Eastern Cape -- Personnel management , Nursing services -- South Africa -- Eastern Cape Nurses -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/18014 , vital:28560
- Description: Despite a number of research studies showing the correlation between higher nurse staffing levels and improved outcomes, RCN members continues to report lower nurse-to-patient ratios than what research results suggests (RCN, 2011:1). This reflected a general concern within the nursing profession. The operating room requires appropriate staffing which is critical to the safety of surgical patients and quality of patient care. The research study was motivated by the researcher’s own experiences while working in an OR in a private hospital where continuous discussions were held with management about the shortage of skilled staff; and where a shortage of OR nurses resulted in the use of Central Sterilizing Department (CSD) staff to do OR duties. The objective of the study was to explore and describe the perceptions of nurses regarding staffing in the operating rooms of a private hospital in the Nelson Mandela Bay Health District. The researcher used qualitative methods and designs to explore and described the perception of nurses regarding staffing in the operating room (OR) of a private hospital in the Nelson Mandela Bay Health District. The research population of the study included all the nurses working in the OR of a private hospital. The total number of 20 OR nurses was individually interviewed by means of semi-structured interviews. Three main themes emerged that includes nurses ‘perceptions with regard to the implications of inadequate staffing in the OR; nurses experiences towards top management with regard to staffing in the OR and recommendations from participants to improve staffing in the OR. Research findings concluded that nurses have a perception that shortage of OR nurses causes lack of communication, physical, emotional and psychological strain. They also perceived OR nurses to work under unrealistic conditions and to receive added responsibilities due to staff shortages, which affect the overall delivery of quality patient care. Comments included failure of management to attend to staff complaints and the perception of high staff turnover due to a lack of recognition and acknowledgement of overworked staff.
- Full Text:
- Date Issued: 2017
- Authors: Kriel, Dora Jenice
- Date: 2017
- Subjects: Primary health care -- South Africa -- Eastern Cape Hospitals -- South Africa -- Eastern Cape -- Personnel management , Nursing services -- South Africa -- Eastern Cape Nurses -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/18014 , vital:28560
- Description: Despite a number of research studies showing the correlation between higher nurse staffing levels and improved outcomes, RCN members continues to report lower nurse-to-patient ratios than what research results suggests (RCN, 2011:1). This reflected a general concern within the nursing profession. The operating room requires appropriate staffing which is critical to the safety of surgical patients and quality of patient care. The research study was motivated by the researcher’s own experiences while working in an OR in a private hospital where continuous discussions were held with management about the shortage of skilled staff; and where a shortage of OR nurses resulted in the use of Central Sterilizing Department (CSD) staff to do OR duties. The objective of the study was to explore and describe the perceptions of nurses regarding staffing in the operating rooms of a private hospital in the Nelson Mandela Bay Health District. The researcher used qualitative methods and designs to explore and described the perception of nurses regarding staffing in the operating room (OR) of a private hospital in the Nelson Mandela Bay Health District. The research population of the study included all the nurses working in the OR of a private hospital. The total number of 20 OR nurses was individually interviewed by means of semi-structured interviews. Three main themes emerged that includes nurses ‘perceptions with regard to the implications of inadequate staffing in the OR; nurses experiences towards top management with regard to staffing in the OR and recommendations from participants to improve staffing in the OR. Research findings concluded that nurses have a perception that shortage of OR nurses causes lack of communication, physical, emotional and psychological strain. They also perceived OR nurses to work under unrealistic conditions and to receive added responsibilities due to staff shortages, which affect the overall delivery of quality patient care. Comments included failure of management to attend to staff complaints and the perception of high staff turnover due to a lack of recognition and acknowledgement of overworked staff.
- Full Text:
- Date Issued: 2017
Perceptions of social and living conditions and quality of working life: a study of border-post employees
- Authors: Geldenhuys, Linda
- Date: 2017
- Subjects: Quality of work life , Work environment Work and family -- South Africa Job stress
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/14289 , vital:27520
- Description: Research problem: Yadav and Khanna (2015) argue that the quality of work life defines the life at work and at home with family members. There is no existing definition of social and living conditions in the literature although it can be considered to include dimensions such as recreation, accommodation, health, education, family, religion and food (SLCB questionnaire). The social and living conditions of employees in rural towns situated close to borders is unique and, in order to offer suggestions with regard to what and how to improve the social and living conditions, their relationship with the quality of work life was investigated. Research objectives: The main objective of this study was to determine the possible relationship between the social and living conditions of employees in rural areas situated close to the South African border and the quality of work-related life. To address the research problem, research objectives and questions were formulated.Research questions: Four research questions were formulated:- What is the relationship between the overall quality of working life (WRQoL.Ovl1) and that of the social and living conditions (SLCB.Ovl1)?, -What is the relationship between the seven dimensions of social and living conditions and the seven dimensions of quality of working life? -Are there differences among the groups regarding the dimensions and overall social and living conditions? Are there differences among the groups regarding the dimensions and overall quality of working life? -Research design: This study is descriptive in nature, and used a self-administered questionnaire to collect data on work-related quality of life and social and living conditions from employees from rural towns close to the border posts. Major findings: The results showed a significant correlation between social and living conditions and the quality of working life. Furthermore, they revealed that accommodation, food and health are the three dimensions of social and living conditions that have the strongest relationship with quality of working life, with accommodation bearing the most significant relation.
- Full Text:
- Date Issued: 2017
- Authors: Geldenhuys, Linda
- Date: 2017
- Subjects: Quality of work life , Work environment Work and family -- South Africa Job stress
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/14289 , vital:27520
- Description: Research problem: Yadav and Khanna (2015) argue that the quality of work life defines the life at work and at home with family members. There is no existing definition of social and living conditions in the literature although it can be considered to include dimensions such as recreation, accommodation, health, education, family, religion and food (SLCB questionnaire). The social and living conditions of employees in rural towns situated close to borders is unique and, in order to offer suggestions with regard to what and how to improve the social and living conditions, their relationship with the quality of work life was investigated. Research objectives: The main objective of this study was to determine the possible relationship between the social and living conditions of employees in rural areas situated close to the South African border and the quality of work-related life. To address the research problem, research objectives and questions were formulated.Research questions: Four research questions were formulated:- What is the relationship between the overall quality of working life (WRQoL.Ovl1) and that of the social and living conditions (SLCB.Ovl1)?, -What is the relationship between the seven dimensions of social and living conditions and the seven dimensions of quality of working life? -Are there differences among the groups regarding the dimensions and overall social and living conditions? Are there differences among the groups regarding the dimensions and overall quality of working life? -Research design: This study is descriptive in nature, and used a self-administered questionnaire to collect data on work-related quality of life and social and living conditions from employees from rural towns close to the border posts. Major findings: The results showed a significant correlation between social and living conditions and the quality of working life. Furthermore, they revealed that accommodation, food and health are the three dimensions of social and living conditions that have the strongest relationship with quality of working life, with accommodation bearing the most significant relation.
- Full Text:
- Date Issued: 2017
Perceptions regarding the impact of ubuntu and servant leadership on employee engagement in the workplace
- Authors: Muller, Roger Joseph
- Date: 2017
- Subjects: Leadership Management -- South Africa , Management -- Africa -- Philosophy Employees -- Attitudes Organizational effectiveness -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/19409 , vital:28868
- Description: South Africa have some of the lowest employee engagement scores in the world. Leadership is a key determinant of employee engagement, but existing leadership theories and practices are often ineffective in more humanistic and collectivistic cultures like South Africa. To this end, Ubuntu and servant leadership is posited to positively influence organisational performance by increasing employee engagement. The primary objective of this study is to investigate perceptions regarding the impact of Ubuntu and servant leadership on employee engagement in private organisations of the Eastern Cape. A quantitative research design was utilised and yielded 428 usable questionnaires through nonprobability sampling. The empirical results revealed that the spirit of solidarity dimension of Ubuntu leadership influenced significantly and positively. Furthermore, it was found that survival and spirit of solidarity had a significant and positive influence on organisational performance as measured through the balanced scorecard (BSC). Servant leadership positively and significantly influenced employee engagement and organisational performance. In addition, it was found that employee engagement mediates the relationship between servant leadership and organizational performance. This study has made several significant empirical and theoretical contributions, and can be classified as one of the pioneering attempts to gather empirical evidence on how Ubuntu manifests in the workplace. The high convergent validity of the dimensions of Ubuntu leadership and comparisons to Servant leadership established in this study, provides some proof of its novel contribution towards leadership theory. A highly reliable and valid measuring instrument was developed to evaluate Ubuntu from a leadership perspective. This is a major empirical contribution as, at the time, there were no reliable scales available in South Africa to measure Ubuntu leadership.
- Full Text:
- Date Issued: 2017
- Authors: Muller, Roger Joseph
- Date: 2017
- Subjects: Leadership Management -- South Africa , Management -- Africa -- Philosophy Employees -- Attitudes Organizational effectiveness -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/19409 , vital:28868
- Description: South Africa have some of the lowest employee engagement scores in the world. Leadership is a key determinant of employee engagement, but existing leadership theories and practices are often ineffective in more humanistic and collectivistic cultures like South Africa. To this end, Ubuntu and servant leadership is posited to positively influence organisational performance by increasing employee engagement. The primary objective of this study is to investigate perceptions regarding the impact of Ubuntu and servant leadership on employee engagement in private organisations of the Eastern Cape. A quantitative research design was utilised and yielded 428 usable questionnaires through nonprobability sampling. The empirical results revealed that the spirit of solidarity dimension of Ubuntu leadership influenced significantly and positively. Furthermore, it was found that survival and spirit of solidarity had a significant and positive influence on organisational performance as measured through the balanced scorecard (BSC). Servant leadership positively and significantly influenced employee engagement and organisational performance. In addition, it was found that employee engagement mediates the relationship between servant leadership and organizational performance. This study has made several significant empirical and theoretical contributions, and can be classified as one of the pioneering attempts to gather empirical evidence on how Ubuntu manifests in the workplace. The high convergent validity of the dimensions of Ubuntu leadership and comparisons to Servant leadership established in this study, provides some proof of its novel contribution towards leadership theory. A highly reliable and valid measuring instrument was developed to evaluate Ubuntu from a leadership perspective. This is a major empirical contribution as, at the time, there were no reliable scales available in South Africa to measure Ubuntu leadership.
- Full Text:
- Date Issued: 2017
Performance and throughput rates of quantity surveying students: a cohort analysis
- Authors: Dent, Sharon Peta
- Date: 2017
- Subjects: Cohort analysis Quantity surveying
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/17581 , vital:28382
- Description: Performance and throughput rates at South African tertiary institutions are low, especially within the science, engineering and technology fields of study. The causes of this poor performance and throughput are difficult to predict, and incorrect assumptions are often made on which students are most likely to fail. The need to investigate this issue is vital in South Africa, where the contributing factors to poor performance and throughput are exacerbated by recent political and economic disparities in the diverse population. In order to better understand the issue within the built environment sector, this study evaluated the performance and throughput rates of fifteen first-year cohorts within the Department of Quantity Surveying at the Nelson Mandela Metropolitan University. The main aim of this study was to investigate the changes in the student population within the department, and to develop a framework for the future prediction of a student’s likelihood of success or failure. In order to achieve this objective, a retrospective longitudinal approach, i.e. a cohort study, was adopted. The study plotted the trends in performance and throughput rates over a period of time; it measured the strength of the relationships between several variables and performance and throughput; and it culminated in the establishment of predictors of performance and throughput rates. Ultimately, the prediction variables could be utilised in the development of influence diagrams as prediction frameworks. The research revealed that the performance and throughput rates of students in the department are improving. This highlights the importance of undertaking a narrow, departmental level analysis; as the findings in this smaller sphere do not match the general theory and assumptions covered in the literature.
- Full Text:
- Date Issued: 2017
- Authors: Dent, Sharon Peta
- Date: 2017
- Subjects: Cohort analysis Quantity surveying
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/17581 , vital:28382
- Description: Performance and throughput rates at South African tertiary institutions are low, especially within the science, engineering and technology fields of study. The causes of this poor performance and throughput are difficult to predict, and incorrect assumptions are often made on which students are most likely to fail. The need to investigate this issue is vital in South Africa, where the contributing factors to poor performance and throughput are exacerbated by recent political and economic disparities in the diverse population. In order to better understand the issue within the built environment sector, this study evaluated the performance and throughput rates of fifteen first-year cohorts within the Department of Quantity Surveying at the Nelson Mandela Metropolitan University. The main aim of this study was to investigate the changes in the student population within the department, and to develop a framework for the future prediction of a student’s likelihood of success or failure. In order to achieve this objective, a retrospective longitudinal approach, i.e. a cohort study, was adopted. The study plotted the trends in performance and throughput rates over a period of time; it measured the strength of the relationships between several variables and performance and throughput; and it culminated in the establishment of predictors of performance and throughput rates. Ultimately, the prediction variables could be utilised in the development of influence diagrams as prediction frameworks. The research revealed that the performance and throughput rates of students in the department are improving. This highlights the importance of undertaking a narrow, departmental level analysis; as the findings in this smaller sphere do not match the general theory and assumptions covered in the literature.
- Full Text:
- Date Issued: 2017
Plasma gasification for converting municipal solid waste to energy
- Authors: Serage, Noah Magonagone
- Date: 2017
- Subjects: Recycling (Waste, etc.) -- South Africa Refuse and refuse disposal -- South Africa , Energy conversion -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/20266 , vital:29166
- Description: In South Africa most of the municipal solid waste is currently removed and taken to land fill sites for engraving. A very small percentage of this is recycled due to lack of exploration of alternative means of further processing. In 2011 approximately 108 million tonnes of waste, mostly being general waste was generated in South Africa. Ninety eight (98) million tonnes of this waste was disposed of at landfill sites (The Department of Environmental Affairs [DEA], 2012). Environmental engineers are finding municipal solid waste management to be a challenge, similarly do the city planners and local administration. The main reason being the difficulty brought about by the complexity in composition of the waste material, no availability of waste minimization technologies and the scarcity of land for landfill sites and their environmental impact (Lal & Singh, 2012). Anyaegbunam (2013) recommend that there is a disposal technique that can convert most of the landfill waste at reduced amount of money to what is being paid on other disposal techniques nowadays, regardless of its form or composition and produce an excess of clean energy, and that technique is called Plasma Gasification which carries a high capability of being economically efficient. According to Young (2010), plasma arc Gasification is a high-temperature pyrolysis process whereby the organics of waste solids (carbon-based materials) are converted into syngas. The syngas can also be sent to gas turbines or reciprocating engines to produce electricity. Few of these plants exist in the world, however there is none in South Africa due to municipal budgetary constraints and lack of evidence for return on investment. Gasification can be described as a thermo-chemical process wherein carbonaceous or carbon-rich feed stocks, for instance tree trimmings or biomass, coal, and petro-coke are transformed into a complex gas containing hydrogen and carbon monoxide (and smaller quantities of carbon dioxide and other trace gases) under high pressure, oxygen exhausted, strong heat and/or steam environments (SRS Energy Solutions, 2016) The problem of electricity shortages continues to increase and communities are unable to cope with the continuous rising electricity bills. It is forecast that electricity demand will grow by approximately 85% and thereby reaching 31 700TWH (terawatt hours) in the year 2035. This growth rate is anticipated at an annual rate of 2.4% of which the economic and population growth will be the driving force, while on the other hand the daily increase of waste at landfill sites poses many problems with regards to the lifespan of the landfill in case green technological disposal processes are not introduced.
- Full Text:
- Date Issued: 2017
- Authors: Serage, Noah Magonagone
- Date: 2017
- Subjects: Recycling (Waste, etc.) -- South Africa Refuse and refuse disposal -- South Africa , Energy conversion -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/20266 , vital:29166
- Description: In South Africa most of the municipal solid waste is currently removed and taken to land fill sites for engraving. A very small percentage of this is recycled due to lack of exploration of alternative means of further processing. In 2011 approximately 108 million tonnes of waste, mostly being general waste was generated in South Africa. Ninety eight (98) million tonnes of this waste was disposed of at landfill sites (The Department of Environmental Affairs [DEA], 2012). Environmental engineers are finding municipal solid waste management to be a challenge, similarly do the city planners and local administration. The main reason being the difficulty brought about by the complexity in composition of the waste material, no availability of waste minimization technologies and the scarcity of land for landfill sites and their environmental impact (Lal & Singh, 2012). Anyaegbunam (2013) recommend that there is a disposal technique that can convert most of the landfill waste at reduced amount of money to what is being paid on other disposal techniques nowadays, regardless of its form or composition and produce an excess of clean energy, and that technique is called Plasma Gasification which carries a high capability of being economically efficient. According to Young (2010), plasma arc Gasification is a high-temperature pyrolysis process whereby the organics of waste solids (carbon-based materials) are converted into syngas. The syngas can also be sent to gas turbines or reciprocating engines to produce electricity. Few of these plants exist in the world, however there is none in South Africa due to municipal budgetary constraints and lack of evidence for return on investment. Gasification can be described as a thermo-chemical process wherein carbonaceous or carbon-rich feed stocks, for instance tree trimmings or biomass, coal, and petro-coke are transformed into a complex gas containing hydrogen and carbon monoxide (and smaller quantities of carbon dioxide and other trace gases) under high pressure, oxygen exhausted, strong heat and/or steam environments (SRS Energy Solutions, 2016) The problem of electricity shortages continues to increase and communities are unable to cope with the continuous rising electricity bills. It is forecast that electricity demand will grow by approximately 85% and thereby reaching 31 700TWH (terawatt hours) in the year 2035. This growth rate is anticipated at an annual rate of 2.4% of which the economic and population growth will be the driving force, while on the other hand the daily increase of waste at landfill sites poses many problems with regards to the lifespan of the landfill in case green technological disposal processes are not introduced.
- Full Text:
- Date Issued: 2017
Population status and habitat use of Indian Ocean humpback dolphins (sousa plumbea) along the south coast of South Africa
- Authors: Conry, Danielle Shanè
- Date: 2017
- Subjects: Sousa -- Population viability analysis -- South Africa Sousa -- Habitat -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/15556 , vital:28269
- Description: Long-lived, top-level predators, such as some marine mammals, serve as important indicators of ecosystem health. Assessing the abundance and habitat use of such marine top predators is essential for the formulation of effective conservation and management actions. There is considerable concern over the viability of small humpback dolphin opulations across a global scale and a number of studies have raised concerns over their vulnerability to extinction. In light of the recent uplisting of Indian Ocean humpback dolphins (Sousa plumbea) to ‘Endangered’ on the South African Red Data list, there is an urgent need for a greater understanding of the abundance and spatial distribution of this species along the South African coastline. Using small vessels as survey platforms between March 2014 and June 2015, this study attempted to determine the abundance, spatial distribution and habitat preferences of Indian Ocean humpback dolphins along 150 km of South Africa’s south coast. A further aim was to assess the utilisation of the current Marine Protected Area network by humpback dolphins along this coastline relative to areas outside of formal protection. Mark-recapture methods applied to photo-identification data produced abundance estimates of 84 individuals (95% CI: 72-115) within the study area for both open and closed models. An average group size of 3.94 individuals (range 1-12; SD = ± 2.82) was observed during the study, indicating a decrease in average group size of ~45 % from a previous assessment in 2002/03. Such a decline in group size could potentially be a result of a change in social structure in response to reduced prey availability. Spatial analyses of humpback dolphin geographic positions, using a kernel density estimator (KDE) and effort-weighted density grid analyses, indicate that the species is unevenly distributed over the coastal zone within the area. Sightings occurred at the highest densities within Buffels Bay and along Goukamma MPA, followed by Plettenberg Bay, Nature’s Valley, and around the Bloukrans, Elandsbos and Groot River East mouths. Habitat preference was assessed using a standard classification-based method and the results indicate a strong preference, in particular, for Dissipative Intermediate Sandy Coast habitat, followed by Very Exposed Rocky Coast, Intermediate Sandy Coast, Estuarine Shore, Mixed Shore and Inshore Reef habitats. Areas of high humpback dolphin densities appear to be associated with these habitat types, especially with Dissipative-Intermediate Sandy Coast habitat. Humpback dolphins were sighted at relatively low densities along stretches of coastline consisting predominately of Exposed Rocky Shore habitat. Long expanses of this habitat type may limit humpback dolphin movements along the coast. The observed patterns in distribution and habitat preferences may be linked to the availability of prey and/or the avoidance of predators. Average sightings per kilometer travelled (SPUE) indicate that the utilisation of the Robberg and Tsitsikamma MPAs by humpback dolphins was low, most likely due to the low availability of sandy coastline in these areas. In contrast, the utilisation of the Goukamma MPA, which is characterised by a high availability of Dissipative-Intermediate Sandy Coast, was very high. The low population numbers and declines in average group size of Indian Ocean humpback dolphins within the study area warrant concern and call for effective conservation and management measures. In light of ever-increasing levels of anthropogenic threats to coastal areas, future research and long-term monitoring of the population is essential to broaden our knowledge of the species and to detect population trends.
- Full Text:
- Date Issued: 2017
- Authors: Conry, Danielle Shanè
- Date: 2017
- Subjects: Sousa -- Population viability analysis -- South Africa Sousa -- Habitat -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/15556 , vital:28269
- Description: Long-lived, top-level predators, such as some marine mammals, serve as important indicators of ecosystem health. Assessing the abundance and habitat use of such marine top predators is essential for the formulation of effective conservation and management actions. There is considerable concern over the viability of small humpback dolphin opulations across a global scale and a number of studies have raised concerns over their vulnerability to extinction. In light of the recent uplisting of Indian Ocean humpback dolphins (Sousa plumbea) to ‘Endangered’ on the South African Red Data list, there is an urgent need for a greater understanding of the abundance and spatial distribution of this species along the South African coastline. Using small vessels as survey platforms between March 2014 and June 2015, this study attempted to determine the abundance, spatial distribution and habitat preferences of Indian Ocean humpback dolphins along 150 km of South Africa’s south coast. A further aim was to assess the utilisation of the current Marine Protected Area network by humpback dolphins along this coastline relative to areas outside of formal protection. Mark-recapture methods applied to photo-identification data produced abundance estimates of 84 individuals (95% CI: 72-115) within the study area for both open and closed models. An average group size of 3.94 individuals (range 1-12; SD = ± 2.82) was observed during the study, indicating a decrease in average group size of ~45 % from a previous assessment in 2002/03. Such a decline in group size could potentially be a result of a change in social structure in response to reduced prey availability. Spatial analyses of humpback dolphin geographic positions, using a kernel density estimator (KDE) and effort-weighted density grid analyses, indicate that the species is unevenly distributed over the coastal zone within the area. Sightings occurred at the highest densities within Buffels Bay and along Goukamma MPA, followed by Plettenberg Bay, Nature’s Valley, and around the Bloukrans, Elandsbos and Groot River East mouths. Habitat preference was assessed using a standard classification-based method and the results indicate a strong preference, in particular, for Dissipative Intermediate Sandy Coast habitat, followed by Very Exposed Rocky Coast, Intermediate Sandy Coast, Estuarine Shore, Mixed Shore and Inshore Reef habitats. Areas of high humpback dolphin densities appear to be associated with these habitat types, especially with Dissipative-Intermediate Sandy Coast habitat. Humpback dolphins were sighted at relatively low densities along stretches of coastline consisting predominately of Exposed Rocky Shore habitat. Long expanses of this habitat type may limit humpback dolphin movements along the coast. The observed patterns in distribution and habitat preferences may be linked to the availability of prey and/or the avoidance of predators. Average sightings per kilometer travelled (SPUE) indicate that the utilisation of the Robberg and Tsitsikamma MPAs by humpback dolphins was low, most likely due to the low availability of sandy coastline in these areas. In contrast, the utilisation of the Goukamma MPA, which is characterised by a high availability of Dissipative-Intermediate Sandy Coast, was very high. The low population numbers and declines in average group size of Indian Ocean humpback dolphins within the study area warrant concern and call for effective conservation and management measures. In light of ever-increasing levels of anthropogenic threats to coastal areas, future research and long-term monitoring of the population is essential to broaden our knowledge of the species and to detect population trends.
- Full Text:
- Date Issued: 2017
Potential use of Islamic finance among Muslims in Port Elizabeth
- Authors: Ismail, Badroen
- Date: 2017
- Subjects: Finance -- Religious aspects Banks and banking -- Religious aspects -- Islam , Consumer behavior -- Religious aspects
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/17526 , vital:28374
- Description: The resurgence of Islam across the globe combined with the resilience that Islamic financial assets have shown against the onslaught of the current financial crisis, make Islamic finance an attractive alternative financial system. Over the past decade, the Islamic finance sector have shown double digit growth rates beyond the traditional areas of the Gulf Cooperation Council (GCC) regions of Asia as well as other parts of the Middle-East and North Africa (MENA) regions. Research suggests that the future of Islamic finance in Africa depends on business opportunities in South Africa, Kenya, Nigeria and Senegal. The South African government, in conjunction with the national finance authorities, have made their intention clear to position the country as the Islamic finance hub for the rest of the African continent. Despite various marketing campaigns over the past decade to convince the public that Islamic banking and finance is for everyone, non-Muslims generally view Islamic banking as being for Muslims alone. Scepticism towards Islamic finance has resulted in a mere 15 per cent of the estimated 1.5 million South African Muslims currently making use of the sector’s banking and retail instruments. This lack of interest is impacting negatively on the country’s aspirations to establish itself as the gateway of Islamic finance to the rest of Africa. Generally, people’s attitudes toward utilising Islamic finance are regarded as a key obstacle to the development of the Islamic banking and finance system in Muslim minority countries. A Kuwait Finance House research report (2012) highlighted a lack of awareness and knowledge of Islamic finance products and services as key factors stifling the growth of the Islamic finance sector in South Africa. In this context, it was deemed necessary to analyse how knowledge, awareness, expectations, beliefs, perceptions and ancillary external factors impact on potential users’ attitude and decision to adopt or reject Islamic finance.By means of adapting Fishbein’s (2000; 2008) Integrative Model of Behavioural Prediction, a universally-acceptable behavioural-change model, this research explains in a holistic manner how cognitive, affective and environmental measures impact on a Port Elizabethan Muslim’s attitude and eventual decision to accept (or reject) Islamic finance. This study has found that knowledge was the most important variable influencing attitude and intention to use (or reject) Islamic finance. Consequently, this thesis proposed that Islamic institutions should focus their efforts on promoting knowledge and awareness of their products among the South African Muslim and non- Muslim population. As the global Shari’ah finance industry continues its positive growth trajectory, it is imperative that Islamic finance stakeholders in South Africa ensure that they exploit the benefits derived from online learning platforms and assist, by means of cross-border collaborations, more students to have greater access to Islamic finance courses. Furthermore, universities and training institutions are encouraged to offer courses and qualifications in Islamic finance to close the talent gap that currently exist in this particular field of study.
- Full Text:
- Date Issued: 2017
- Authors: Ismail, Badroen
- Date: 2017
- Subjects: Finance -- Religious aspects Banks and banking -- Religious aspects -- Islam , Consumer behavior -- Religious aspects
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/17526 , vital:28374
- Description: The resurgence of Islam across the globe combined with the resilience that Islamic financial assets have shown against the onslaught of the current financial crisis, make Islamic finance an attractive alternative financial system. Over the past decade, the Islamic finance sector have shown double digit growth rates beyond the traditional areas of the Gulf Cooperation Council (GCC) regions of Asia as well as other parts of the Middle-East and North Africa (MENA) regions. Research suggests that the future of Islamic finance in Africa depends on business opportunities in South Africa, Kenya, Nigeria and Senegal. The South African government, in conjunction with the national finance authorities, have made their intention clear to position the country as the Islamic finance hub for the rest of the African continent. Despite various marketing campaigns over the past decade to convince the public that Islamic banking and finance is for everyone, non-Muslims generally view Islamic banking as being for Muslims alone. Scepticism towards Islamic finance has resulted in a mere 15 per cent of the estimated 1.5 million South African Muslims currently making use of the sector’s banking and retail instruments. This lack of interest is impacting negatively on the country’s aspirations to establish itself as the gateway of Islamic finance to the rest of Africa. Generally, people’s attitudes toward utilising Islamic finance are regarded as a key obstacle to the development of the Islamic banking and finance system in Muslim minority countries. A Kuwait Finance House research report (2012) highlighted a lack of awareness and knowledge of Islamic finance products and services as key factors stifling the growth of the Islamic finance sector in South Africa. In this context, it was deemed necessary to analyse how knowledge, awareness, expectations, beliefs, perceptions and ancillary external factors impact on potential users’ attitude and decision to adopt or reject Islamic finance.By means of adapting Fishbein’s (2000; 2008) Integrative Model of Behavioural Prediction, a universally-acceptable behavioural-change model, this research explains in a holistic manner how cognitive, affective and environmental measures impact on a Port Elizabethan Muslim’s attitude and eventual decision to accept (or reject) Islamic finance. This study has found that knowledge was the most important variable influencing attitude and intention to use (or reject) Islamic finance. Consequently, this thesis proposed that Islamic institutions should focus their efforts on promoting knowledge and awareness of their products among the South African Muslim and non- Muslim population. As the global Shari’ah finance industry continues its positive growth trajectory, it is imperative that Islamic finance stakeholders in South Africa ensure that they exploit the benefits derived from online learning platforms and assist, by means of cross-border collaborations, more students to have greater access to Islamic finance courses. Furthermore, universities and training institutions are encouraged to offer courses and qualifications in Islamic finance to close the talent gap that currently exist in this particular field of study.
- Full Text:
- Date Issued: 2017
Poverty alleviation through the development of subsistence harvesters at Ngqushwa Municipality
- Authors: Sunduza, Nosipho Gloria
- Date: 2017
- Subjects: Subsistence farming -- South Africa -- Eastern Cape , Agricultural development projects -- South Africa -- Eastern Cape , Economic development projects -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/9228 , vital:26481
- Description: The broad objective of the study was poverty alleviation through the development of subsistence harvesters at Ngqushwa Municipality. The research objectives were to explore - ways of advancing from being subsistence level producers, opportunities available to these harvesters, if they, (subsistence harvesters), want to be commercialized and what actions do they need to take to become successful businesses. The study was conducted in the the coastal area of Ngqushwa Municipality. The researcher conducted face-to-face interviews with 2 key informants. The respondents provided information on the marine species harvested by the subsistence harvesters of the Ngqushwa Municipality and the type of tools they use for harvesting. They mentioned how subsistence harvesters could advance from subsistence level to producers, about opportunities available to these harvesters, and what actions they need to take if they want to become successful businesses. The key informants also informed the researcher that subsistence harvesters are now classified as Small Scale Fisheries and informed about villages that engage in subsistence harvesting within the Ngqushwa Municipality area. 15 subsistence harvesters were randomly sampled in Polar Park, Qolweni, Gcinisa and Wesley villages which fall under the Ngqushwa Municipality. These harvesters shared their willingness to move from subsistence to commercial fisheries. The use of storytelling interviews (4 subsistence), was also used by the researcher to get more information about their experiences and challenges. The survey was conducted over 7 days. One day in June, 2016 and 6 days in September, 2016. The total number of people interviewed was 21, made up of 2 key informants, 15 subsistence and 4 story telling interviews. The results showed that the community of subsistence harvesters is very discontented because they do not benefit from the sea and the marine resources although they live near the ocean. They also believe that in 22 years of democracy there is no way forward from the government. They are irate as they have witnessed the top down management style from the government. The current subsistence harvesters have little or no formal school education, (23% with no formal schooling at all, 23% with high school education between grades 8 - 12). Without the educational and skills programs from the government the subsistence harvesters will not be able to grow and create further employment opportunities for the rest of the community of Ngqushwa Municipality. The following recommendations have suggested that co-management must come from the community. It must not be people from parliament who do not feel the pain the communities are suffering. The top down approach should stop and a bottom up approach should be implemented, which will allow decisions to be made by the communities involved in harvesting. The government only needs to monitor. They (Government), have good policies, but are they are not monitored. The harvesters need training from the government. There is a need for the formulation of a development forum with learned people, churches, community leaders, young people, women, disabled, and the fishing community all represented. There is also need of support in terms of equipment, boats and education. The government needs to conduct training on fisheries and business management and provide financial support and assistance with business plans.
- Full Text:
- Date Issued: 2017
- Authors: Sunduza, Nosipho Gloria
- Date: 2017
- Subjects: Subsistence farming -- South Africa -- Eastern Cape , Agricultural development projects -- South Africa -- Eastern Cape , Economic development projects -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/9228 , vital:26481
- Description: The broad objective of the study was poverty alleviation through the development of subsistence harvesters at Ngqushwa Municipality. The research objectives were to explore - ways of advancing from being subsistence level producers, opportunities available to these harvesters, if they, (subsistence harvesters), want to be commercialized and what actions do they need to take to become successful businesses. The study was conducted in the the coastal area of Ngqushwa Municipality. The researcher conducted face-to-face interviews with 2 key informants. The respondents provided information on the marine species harvested by the subsistence harvesters of the Ngqushwa Municipality and the type of tools they use for harvesting. They mentioned how subsistence harvesters could advance from subsistence level to producers, about opportunities available to these harvesters, and what actions they need to take if they want to become successful businesses. The key informants also informed the researcher that subsistence harvesters are now classified as Small Scale Fisheries and informed about villages that engage in subsistence harvesting within the Ngqushwa Municipality area. 15 subsistence harvesters were randomly sampled in Polar Park, Qolweni, Gcinisa and Wesley villages which fall under the Ngqushwa Municipality. These harvesters shared their willingness to move from subsistence to commercial fisheries. The use of storytelling interviews (4 subsistence), was also used by the researcher to get more information about their experiences and challenges. The survey was conducted over 7 days. One day in June, 2016 and 6 days in September, 2016. The total number of people interviewed was 21, made up of 2 key informants, 15 subsistence and 4 story telling interviews. The results showed that the community of subsistence harvesters is very discontented because they do not benefit from the sea and the marine resources although they live near the ocean. They also believe that in 22 years of democracy there is no way forward from the government. They are irate as they have witnessed the top down management style from the government. The current subsistence harvesters have little or no formal school education, (23% with no formal schooling at all, 23% with high school education between grades 8 - 12). Without the educational and skills programs from the government the subsistence harvesters will not be able to grow and create further employment opportunities for the rest of the community of Ngqushwa Municipality. The following recommendations have suggested that co-management must come from the community. It must not be people from parliament who do not feel the pain the communities are suffering. The top down approach should stop and a bottom up approach should be implemented, which will allow decisions to be made by the communities involved in harvesting. The government only needs to monitor. They (Government), have good policies, but are they are not monitored. The harvesters need training from the government. There is a need for the formulation of a development forum with learned people, churches, community leaders, young people, women, disabled, and the fishing community all represented. There is also need of support in terms of equipment, boats and education. The government needs to conduct training on fisheries and business management and provide financial support and assistance with business plans.
- Full Text:
- Date Issued: 2017
Pre-service teachers’ concerns on teaching practicum: a mixed methods case study from Zimbabwe
- Chitumwa, Chemunondirwa Christopher
- Authors: Chitumwa, Chemunondirwa Christopher
- Date: 2017
- Subjects: Practicums -- Zimbabwe Teachers -- Training of -- Zimbabwe , Teaching -- Zimbabwe -- Methodology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/14840 , vital:27879
- Description: The purpose of this study was to identify and examine pre-service teachers’ concerns relating to their teaching practicum in Zimbabwe and to suggest strategies that could be used to support them in a digitalised era. This study was necessitated by the desire to understand the concerns that pre-service teachers experience during teaching practicum in a fast changing world and in a depressing, unstable socio-politico-economic environment. The study employed a meta-conceptual approach comprising constructivist and social cognitive epistemology as its theoretical framework. A concurrent mixed methods research design was utilised to address the research questions. Both quantitative and qualitative methods were used to design the study, collect, and analyse data. Thirty participants comprising of 24 pre-service teachers and six college supervisors were purposively selected for the qualitative study from United College of Education in Zimbabwe. Qualitative data was collected by means of interviews and analysed through a thematic analysis. For the quantitative phase, 300 pre-service teachers were chosen through stratified random sampling from the same institution and were asked to complete a questionnaire. One hundred and ninety-three questionnaires were returned and usable, giving a return rate of 64%. Data from the survey were analysed using descriptive and inferential statistics. Findings from the study revealed that pre-service teachers experience diverse concerns during teaching practicum that included classroom management, teacher knowledge, socio-economic factors, workload, interpersonal relationships and assessment anxiety. Findings from the quantitative phase revealed some differences in the levels of concerns among the year groups. A general downward trend in the levels of concerns was detected except for teacher beliefs concerns that remained constant. Findings from the qualitative phase of the study revealed that the concerns that pre-service teachers experienced during teaching practicum had negative impact on their classroom practice. Most of the student teachers had devised some coping strategies to deal with their concerns and they were satisfied with the quality of support from mentors and peers, but not that from their supervisors. In an increasingly globalised world, the researcher felt that teaching practicum related concerns could be minimised by exploiting the benefits of digitalised knowledge and communities of learning.
- Full Text:
- Date Issued: 2017
- Authors: Chitumwa, Chemunondirwa Christopher
- Date: 2017
- Subjects: Practicums -- Zimbabwe Teachers -- Training of -- Zimbabwe , Teaching -- Zimbabwe -- Methodology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/14840 , vital:27879
- Description: The purpose of this study was to identify and examine pre-service teachers’ concerns relating to their teaching practicum in Zimbabwe and to suggest strategies that could be used to support them in a digitalised era. This study was necessitated by the desire to understand the concerns that pre-service teachers experience during teaching practicum in a fast changing world and in a depressing, unstable socio-politico-economic environment. The study employed a meta-conceptual approach comprising constructivist and social cognitive epistemology as its theoretical framework. A concurrent mixed methods research design was utilised to address the research questions. Both quantitative and qualitative methods were used to design the study, collect, and analyse data. Thirty participants comprising of 24 pre-service teachers and six college supervisors were purposively selected for the qualitative study from United College of Education in Zimbabwe. Qualitative data was collected by means of interviews and analysed through a thematic analysis. For the quantitative phase, 300 pre-service teachers were chosen through stratified random sampling from the same institution and were asked to complete a questionnaire. One hundred and ninety-three questionnaires were returned and usable, giving a return rate of 64%. Data from the survey were analysed using descriptive and inferential statistics. Findings from the study revealed that pre-service teachers experience diverse concerns during teaching practicum that included classroom management, teacher knowledge, socio-economic factors, workload, interpersonal relationships and assessment anxiety. Findings from the quantitative phase revealed some differences in the levels of concerns among the year groups. A general downward trend in the levels of concerns was detected except for teacher beliefs concerns that remained constant. Findings from the qualitative phase of the study revealed that the concerns that pre-service teachers experienced during teaching practicum had negative impact on their classroom practice. Most of the student teachers had devised some coping strategies to deal with their concerns and they were satisfied with the quality of support from mentors and peers, but not that from their supervisors. In an increasingly globalised world, the researcher felt that teaching practicum related concerns could be minimised by exploiting the benefits of digitalised knowledge and communities of learning.
- Full Text:
- Date Issued: 2017
Pre-service teachers’ experiences of lecturers’ approaches to dealing with diversity in university classrooms
- Authors: Pieterse, Carl
- Date: 2017
- Subjects: Teacher-student relationships -- South Africa Teachers college graduates -- South Africa , Teachers -- Training of -- South Africa Multicultural education -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10948/14499 , vital:27665
- Description: This study explores pre-service student teachers’ experiences of lecturers’ approaches to dealing with diversity in university classrooms. It includes student insights into the strategies that lecturers employ as they manage the complexities of diversity in university classrooms. The research is located in the realm of diversity education and diversity pedagogy and is contextualized against the backdrop of the historical and socio-political climate in South Africa. The challenging consequences of the desegregation of educational institutions in a post-apartheid South Africa has resulted in the advent of diverse and heterogeneous student populations which both challenge and de-marginalise educational practices bringing into focus the need for a humanizing and culturally relevant pedagogy. This, to counter the hegemonic dangers of perpetuating the status quo by further entrenching deep-seated racism disguised as integration. Using qualitative data generated by pre-service student teachers, the results suggest that lecturers fail to embrace diversity to its fullest. The findings illuminate the disparity between policy and practice in a forward-thinking faculty and lecturers’ lack of pedagogical knowledge and skills, which inhibit them from embodying the principles of diversity education. The lecturers’ approaches to dealing with diversity in practice indicate that they are stuck in the quagmire of assimilationist, colour-blind, contributionist and business-as-usual strategies which militate against culturally responsive pedagogy thereby marginalizing learners.
- Full Text:
- Date Issued: 2017
- Authors: Pieterse, Carl
- Date: 2017
- Subjects: Teacher-student relationships -- South Africa Teachers college graduates -- South Africa , Teachers -- Training of -- South Africa Multicultural education -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10948/14499 , vital:27665
- Description: This study explores pre-service student teachers’ experiences of lecturers’ approaches to dealing with diversity in university classrooms. It includes student insights into the strategies that lecturers employ as they manage the complexities of diversity in university classrooms. The research is located in the realm of diversity education and diversity pedagogy and is contextualized against the backdrop of the historical and socio-political climate in South Africa. The challenging consequences of the desegregation of educational institutions in a post-apartheid South Africa has resulted in the advent of diverse and heterogeneous student populations which both challenge and de-marginalise educational practices bringing into focus the need for a humanizing and culturally relevant pedagogy. This, to counter the hegemonic dangers of perpetuating the status quo by further entrenching deep-seated racism disguised as integration. Using qualitative data generated by pre-service student teachers, the results suggest that lecturers fail to embrace diversity to its fullest. The findings illuminate the disparity between policy and practice in a forward-thinking faculty and lecturers’ lack of pedagogical knowledge and skills, which inhibit them from embodying the principles of diversity education. The lecturers’ approaches to dealing with diversity in practice indicate that they are stuck in the quagmire of assimilationist, colour-blind, contributionist and business-as-usual strategies which militate against culturally responsive pedagogy thereby marginalizing learners.
- Full Text:
- Date Issued: 2017