Hybrid additive manufacturing platform for the production of composite wind turbine blade moulds
- Authors: Momsen, Timothy Benjamin
- Date: 2017
- Subjects: Manufacturing processes -- Automation Production control -- Automation , Production management
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/19091 , vital:28772
- Description: This dissertation discusses the application of additive manufacturing technologies for production of a large-scale rapid prototyping machine, which will be used to produce moulds for prototype composite turbine blades for the emerging renewables energy industry within the Eastern Cape region in South Africa. The conceptualization and design of three complete printer builds resulted in the amalgamation of a final system, following stringent theoretical design, simulation, and feasibility analysis. Following the initial product design cycle stage, construction and performance testing of a large-scale additive manufacturing platform were performed. In-depth statistical analysis of the mechatronic system was undertaken, particularly related to print-head locational accuracy, repeatability, and effects of parameter variation on printer performance. The machine was analysed to assess feasibility for use in the mould-making industry with accuracy and repeatability metrics of 0.121 mm and 0.156 mm rivalling those produced by some of the more accurate fused deposition modellers commercially available. The research data gathered serves to confirm that rapid prototyping is a good alternative manufacturing method for wind turbine blade plug and mould production.
- Full Text:
- Date Issued: 2017
- Authors: Momsen, Timothy Benjamin
- Date: 2017
- Subjects: Manufacturing processes -- Automation Production control -- Automation , Production management
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/19091 , vital:28772
- Description: This dissertation discusses the application of additive manufacturing technologies for production of a large-scale rapid prototyping machine, which will be used to produce moulds for prototype composite turbine blades for the emerging renewables energy industry within the Eastern Cape region in South Africa. The conceptualization and design of three complete printer builds resulted in the amalgamation of a final system, following stringent theoretical design, simulation, and feasibility analysis. Following the initial product design cycle stage, construction and performance testing of a large-scale additive manufacturing platform were performed. In-depth statistical analysis of the mechatronic system was undertaken, particularly related to print-head locational accuracy, repeatability, and effects of parameter variation on printer performance. The machine was analysed to assess feasibility for use in the mould-making industry with accuracy and repeatability metrics of 0.121 mm and 0.156 mm rivalling those produced by some of the more accurate fused deposition modellers commercially available. The research data gathered serves to confirm that rapid prototyping is a good alternative manufacturing method for wind turbine blade plug and mould production.
- Full Text:
- Date Issued: 2017
ICT readiness for business continuity in local government
- Authors: Koen, Ruan
- Date: 2017
- Subjects: Internet in public administration -- South Africa , Electronic commerce -- Government policy , Municipal services -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/7025 , vital:21192
- Description: Information and Communication Technology (ICT) has evolved into a pervasive commodity in modern enterprises. ICT enables enterprises, regardless of sector, to achieve their strategic objectives. Similarly, ICT is regarded as a critical enabler in South African municipalities to reach their objectives and ultimately deliver sustainable services to their communities. This dependence on ICT, therefore, necessitates a resilient ICT environment where minimal disruption to ICT is a primary goal. Unfortunately, as reported by the Auditor-General of South Africa, the majority of South African municipalities are neglecting to address the continuity of their ICT services. Failing to implement adequate ICT continuity controls restrict these municipalities from achieving their strategic goals and, as a result, fulfilling their constitutional mandate of service delivery. It is, therefore, the objective of this study to devise a method, consisting of a theoretical foundation and a supporting tool-set, to assist municipalities in addressing a real-world ICT continuity problem. This method aims to be scalable and usable within different municipalities, and be simplistic and comprehensible enough to implement. The theoretical foundation will introduce the concept of ICT Readiness for Business Continuity, based on the recommendations of international best practices and standards, for example, the ISO 27031 (2011) standard. Furthermore, by considering various challenges within local government, the tool-set will ultimately help municipalities to help themselves in this regard.
- Full Text:
- Date Issued: 2017
- Authors: Koen, Ruan
- Date: 2017
- Subjects: Internet in public administration -- South Africa , Electronic commerce -- Government policy , Municipal services -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/7025 , vital:21192
- Description: Information and Communication Technology (ICT) has evolved into a pervasive commodity in modern enterprises. ICT enables enterprises, regardless of sector, to achieve their strategic objectives. Similarly, ICT is regarded as a critical enabler in South African municipalities to reach their objectives and ultimately deliver sustainable services to their communities. This dependence on ICT, therefore, necessitates a resilient ICT environment where minimal disruption to ICT is a primary goal. Unfortunately, as reported by the Auditor-General of South Africa, the majority of South African municipalities are neglecting to address the continuity of their ICT services. Failing to implement adequate ICT continuity controls restrict these municipalities from achieving their strategic goals and, as a result, fulfilling their constitutional mandate of service delivery. It is, therefore, the objective of this study to devise a method, consisting of a theoretical foundation and a supporting tool-set, to assist municipalities in addressing a real-world ICT continuity problem. This method aims to be scalable and usable within different municipalities, and be simplistic and comprehensible enough to implement. The theoretical foundation will introduce the concept of ICT Readiness for Business Continuity, based on the recommendations of international best practices and standards, for example, the ISO 27031 (2011) standard. Furthermore, by considering various challenges within local government, the tool-set will ultimately help municipalities to help themselves in this regard.
- Full Text:
- Date Issued: 2017
Identification and classification of micro-estuaries using selected abiotic and biotic characteristics along the Eastern Cape coast, South Africa
- Authors: Naidoo, Lyndle Sherae
- Date: 2017
- Subjects: Estuarine ecology -- South Africa -- Eastern Cape Estuaries -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/11920 , vital:27007
- Description: Many of the larger estuaries along the South African coastline are highly degraded due to human impacts, highlighting the need to conserve pristine systems. There are approximately 100 micro-estuaries along our coastline which have not yet been identified or classified and hence their ecological functioning is unknown. The aim of this study was to identify and classify micro-estuaries along the Eastern Cape coast. Specific objectives of the study were to: 1) map the distribution of estuarine habitats in a selection of micro-estuaries and assess changes over time; 2) measure the physico-chemical characteristics of the micro-estuaries in the field; 3) investigate the distribution of vegetation, identify macrophyte species and habitat integrity and classify the micro-estuaries sampled using abiotic and botanical characteristics. A total of 30 systems were identified of which 10 were selected for sampling which took place seasonally (2015-2016). A relationship between open water surface area and short term rainfall was only evident in Cunge, Sandy Bottom and Ichabana. In the field it was observed that after heavy rainfall, open water surface area increased and mouth breaching occurred. Salinity was the only water column characteristic that showed differences; salinity increased in response to over wash events. Sand was dominant in all systems and there were no differences in sediment characteristics. A total of 8 macroalgal species, 16 estuarine macrophyte species, six freshwater species and 72 riparian plant species were found. Seed bank reserves were low in all systems despite them being vegetated. Only abiotic characteristics were used for classification using Principle Components Analysis since there were no botanical differences between systems. Micro-estuaries were larger (> 0.03 ha), had a higher salinity (oligohaline, mesohaline and polyhaline conditions) and a constant water body. Micro-outlets were smaller (< 0.03 ha), had a lower salinity (oligohaline conditions were most common) and showed periods of drying. Five micro-estuaries (Shelbertsstroom, Kwesani, Cunge, Mtwendwe and Mtendwe) and five micro-outlets (Stromatolite, Sandy Bottom, Ichabana, Palm Tree and Black Rock) were classified. This study has shown that the micro-estuaries along the Eastern Cape coast are pristine (i.e. intact riparian zone and catchment), untouched and highly dynamic systems (i.e. great variation in water surface area and mouth condition) highlighting their need for protection.
- Full Text:
- Date Issued: 2017
- Authors: Naidoo, Lyndle Sherae
- Date: 2017
- Subjects: Estuarine ecology -- South Africa -- Eastern Cape Estuaries -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/11920 , vital:27007
- Description: Many of the larger estuaries along the South African coastline are highly degraded due to human impacts, highlighting the need to conserve pristine systems. There are approximately 100 micro-estuaries along our coastline which have not yet been identified or classified and hence their ecological functioning is unknown. The aim of this study was to identify and classify micro-estuaries along the Eastern Cape coast. Specific objectives of the study were to: 1) map the distribution of estuarine habitats in a selection of micro-estuaries and assess changes over time; 2) measure the physico-chemical characteristics of the micro-estuaries in the field; 3) investigate the distribution of vegetation, identify macrophyte species and habitat integrity and classify the micro-estuaries sampled using abiotic and botanical characteristics. A total of 30 systems were identified of which 10 were selected for sampling which took place seasonally (2015-2016). A relationship between open water surface area and short term rainfall was only evident in Cunge, Sandy Bottom and Ichabana. In the field it was observed that after heavy rainfall, open water surface area increased and mouth breaching occurred. Salinity was the only water column characteristic that showed differences; salinity increased in response to over wash events. Sand was dominant in all systems and there were no differences in sediment characteristics. A total of 8 macroalgal species, 16 estuarine macrophyte species, six freshwater species and 72 riparian plant species were found. Seed bank reserves were low in all systems despite them being vegetated. Only abiotic characteristics were used for classification using Principle Components Analysis since there were no botanical differences between systems. Micro-estuaries were larger (> 0.03 ha), had a higher salinity (oligohaline, mesohaline and polyhaline conditions) and a constant water body. Micro-outlets were smaller (< 0.03 ha), had a lower salinity (oligohaline conditions were most common) and showed periods of drying. Five micro-estuaries (Shelbertsstroom, Kwesani, Cunge, Mtwendwe and Mtendwe) and five micro-outlets (Stromatolite, Sandy Bottom, Ichabana, Palm Tree and Black Rock) were classified. This study has shown that the micro-estuaries along the Eastern Cape coast are pristine (i.e. intact riparian zone and catchment), untouched and highly dynamic systems (i.e. great variation in water surface area and mouth condition) highlighting their need for protection.
- Full Text:
- Date Issued: 2017
Identifying operations waste at a logistics service institution in Port Elizabeth
- Authors: Bailey, Grizenier
- Date: 2017
- Subjects: Lean manufacturing -- South Africa -- Port Elizabeth Service industries -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/17537 , vital:28376
- Description: In today’s dynamic market, it is crucial that logistics systems understand their activities and processes in an efficient way. Lean, in essence, is a method to assist companies in rendering efficient services to customers (Andrejic, 2013, p. 84). The Lean approach for waste elimination can be applied to many different types of operations whether in manufacturing or service industries. The identification of warehousing wastes is sometimes considered difficult in its identification within processes (Villareal, Garza, Rosas & Garcia, 2012, p. 278). The purpose of this case study is to contribute to finding a solution for the decreasing operational efficiency in the operation under study. The researcher found that this paper filled an important research gap in terms of offering management of the selected logistics institution a better understanding of the different waste types in each process. Operational areas such as receiving, unboxing, put-away, picking and issuing were examined as possible reasons for concern about service orientated wastes. The research was conducted through observations and thereafter a questionnaire was distributed amongst a sample of 40 employees within a specific logistics institution. The study discussed certain key factors in Lean, specifically focusing on the types of waste in a service environment.
- Full Text:
- Date Issued: 2017
- Authors: Bailey, Grizenier
- Date: 2017
- Subjects: Lean manufacturing -- South Africa -- Port Elizabeth Service industries -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/17537 , vital:28376
- Description: In today’s dynamic market, it is crucial that logistics systems understand their activities and processes in an efficient way. Lean, in essence, is a method to assist companies in rendering efficient services to customers (Andrejic, 2013, p. 84). The Lean approach for waste elimination can be applied to many different types of operations whether in manufacturing or service industries. The identification of warehousing wastes is sometimes considered difficult in its identification within processes (Villareal, Garza, Rosas & Garcia, 2012, p. 278). The purpose of this case study is to contribute to finding a solution for the decreasing operational efficiency in the operation under study. The researcher found that this paper filled an important research gap in terms of offering management of the selected logistics institution a better understanding of the different waste types in each process. Operational areas such as receiving, unboxing, put-away, picking and issuing were examined as possible reasons for concern about service orientated wastes. The research was conducted through observations and thereafter a questionnaire was distributed amongst a sample of 40 employees within a specific logistics institution. The study discussed certain key factors in Lean, specifically focusing on the types of waste in a service environment.
- Full Text:
- Date Issued: 2017
Impact of ambient air pollution on human health health in the Nelson Mandela Bay Municipality
- Nodwele, Mzoxolo Patrick, Strumpher, J
- Authors: Nodwele, Mzoxolo Patrick , Strumpher, J
- Date: 2017
- Subjects: Environmental health -- South Africa -- Nelson Mandela Bay Municipality Air -- Pollution -- Meteorological aspects -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Doctoral , DTech
- Identifier: http://hdl.handle.net/10948/20142 , vital:29134
- Description: The aim of this study was to assess whether ambient-air pollution contributed negatively to ambient-air quality, and subsequently to human health in the Nelson Mandela Bay Municipality (the study area). A research design that is descriptive and explorative in nature was followed. The research methodology conformed to the following procedure. Firstly, an emission inventory of one hundred and fifty (150) emission sources listed on the data base of the Nelson Mandela Bay Municipality was compiled (“N” and “n” = 150) in a quantitative research approach. Emission data from these sources, together with the relevant meteorological data from the weather stations in the study area (“N” and “n” = 5) were collected and used as input into a geographical information system-software program to quantify the contribution of each emission source to ambient air pollution. The said software program was also used to simulate the dispersion of emissions over the study area. The emission inventory was compiled in consultation with a focus group of experts in the field of air-pollution control in a qualitative-research approach. Secondly, health records of the patients who attend the clinics in the said municipality (“N” and “n” = 49) were assessed for air pollution-related health outcomes. Nineteen (19) of the forty-nine (49) clinics were situated in Sub-District A; fifteen (15) clinics were situated in Sub-District B. The last fifteen of the clinics were situated in Sub-District C, which was also the least-industrialised sub-district. Sub-districts A and B were found to be the most industrialised of the three Sub-districts. Air pollution related health statistics were compiled for the following air-pollution-related health outcomes, namely: lower respiratory tract infections in children under five (5) years of age, as well as pneumonia and asthma in the general population.
- Full Text:
- Date Issued: 2017
- Authors: Nodwele, Mzoxolo Patrick , Strumpher, J
- Date: 2017
- Subjects: Environmental health -- South Africa -- Nelson Mandela Bay Municipality Air -- Pollution -- Meteorological aspects -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Doctoral , DTech
- Identifier: http://hdl.handle.net/10948/20142 , vital:29134
- Description: The aim of this study was to assess whether ambient-air pollution contributed negatively to ambient-air quality, and subsequently to human health in the Nelson Mandela Bay Municipality (the study area). A research design that is descriptive and explorative in nature was followed. The research methodology conformed to the following procedure. Firstly, an emission inventory of one hundred and fifty (150) emission sources listed on the data base of the Nelson Mandela Bay Municipality was compiled (“N” and “n” = 150) in a quantitative research approach. Emission data from these sources, together with the relevant meteorological data from the weather stations in the study area (“N” and “n” = 5) were collected and used as input into a geographical information system-software program to quantify the contribution of each emission source to ambient air pollution. The said software program was also used to simulate the dispersion of emissions over the study area. The emission inventory was compiled in consultation with a focus group of experts in the field of air-pollution control in a qualitative-research approach. Secondly, health records of the patients who attend the clinics in the said municipality (“N” and “n” = 49) were assessed for air pollution-related health outcomes. Nineteen (19) of the forty-nine (49) clinics were situated in Sub-District A; fifteen (15) clinics were situated in Sub-District B. The last fifteen of the clinics were situated in Sub-District C, which was also the least-industrialised sub-district. Sub-districts A and B were found to be the most industrialised of the three Sub-districts. Air pollution related health statistics were compiled for the following air-pollution-related health outcomes, namely: lower respiratory tract infections in children under five (5) years of age, as well as pneumonia and asthma in the general population.
- Full Text:
- Date Issued: 2017
Implementation of National Health Insurance in South Africa: views of healthcare managers in a private healthcare institution
- Authors: Grewar, David Alan
- Date: 2017
- Subjects: National health insurance -- South Africa , Health care reform -- South Africa , Medical personnel -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/7503 , vital:21789
- Description: South Africa is in the process of reforming its healthcare system by implementing universal health coverage for its citizens. Universal health coverage is defined as the access of all people to comprehensive health services at an affordable cost with protection against catastrophic health expenditures leading to financial hardship. The system being implemented in South Africa is known as National Health Insurance (NHI) and is seen by the South African government as the key to addressing the shortcomings and disparities in the current public and private healthcare sectors. Healthcare managers have a crucial role to play in health reform yet are often overlooked in debate over health reform. The primary aim of this study was to better understand the views of healthcare managers, working in a private healthcare institution in South Africa, towards the implementation of the NHI. The purpose of this was to make recommendations that would assist the private healthcare institution under investigation to optimise the implementation of the NHI. A quantitative research design was used to explore and describe the views of healthcare managers. Firstly, a literature review was conducted to gain international as well as local perspectives of healthcare practitioners on universal health coverage. Secondly, a census survey in the form of an online questionnaire was developed and distributed to 193 healthcare managers representing different managerial and medical disciplines in a private healthcare institution with facilities nation-wide. A total of 63 questionnaires were returned for analysis. Quantitative data were analysed using Microsoft Excel, Statistica and SPSS Statistics. Qualitative data in the form of written comments by the participants were analysed using interpretive analysis that involved sequential steps of familiarisation and immersion, development of themes, coding, elaboration and interpretation and checking. The qualitative element of the study was limited in nature and was used merely to enrich the quantitative findings. The study found that there was a lack of knowledge amongst private healthcare managers concerning the NHI, poor communication from the government regarding the proposed NHI and high levels of negativity towards the ability of the government to successfully implement the NHI. However it was found that despite concerns regarding the NHI, the private healthcare managers surveyed showed a willingness to actively participate in its implementation. Recommendations regarding policy and practise were made for private healthcare institutions as well as for the South African government in order to assist with the implementation of the NHI.
- Full Text:
- Date Issued: 2017
- Authors: Grewar, David Alan
- Date: 2017
- Subjects: National health insurance -- South Africa , Health care reform -- South Africa , Medical personnel -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/7503 , vital:21789
- Description: South Africa is in the process of reforming its healthcare system by implementing universal health coverage for its citizens. Universal health coverage is defined as the access of all people to comprehensive health services at an affordable cost with protection against catastrophic health expenditures leading to financial hardship. The system being implemented in South Africa is known as National Health Insurance (NHI) and is seen by the South African government as the key to addressing the shortcomings and disparities in the current public and private healthcare sectors. Healthcare managers have a crucial role to play in health reform yet are often overlooked in debate over health reform. The primary aim of this study was to better understand the views of healthcare managers, working in a private healthcare institution in South Africa, towards the implementation of the NHI. The purpose of this was to make recommendations that would assist the private healthcare institution under investigation to optimise the implementation of the NHI. A quantitative research design was used to explore and describe the views of healthcare managers. Firstly, a literature review was conducted to gain international as well as local perspectives of healthcare practitioners on universal health coverage. Secondly, a census survey in the form of an online questionnaire was developed and distributed to 193 healthcare managers representing different managerial and medical disciplines in a private healthcare institution with facilities nation-wide. A total of 63 questionnaires were returned for analysis. Quantitative data were analysed using Microsoft Excel, Statistica and SPSS Statistics. Qualitative data in the form of written comments by the participants were analysed using interpretive analysis that involved sequential steps of familiarisation and immersion, development of themes, coding, elaboration and interpretation and checking. The qualitative element of the study was limited in nature and was used merely to enrich the quantitative findings. The study found that there was a lack of knowledge amongst private healthcare managers concerning the NHI, poor communication from the government regarding the proposed NHI and high levels of negativity towards the ability of the government to successfully implement the NHI. However it was found that despite concerns regarding the NHI, the private healthcare managers surveyed showed a willingness to actively participate in its implementation. Recommendations regarding policy and practise were made for private healthcare institutions as well as for the South African government in order to assist with the implementation of the NHI.
- Full Text:
- Date Issued: 2017
Improving revenue management at the Nelson Mandela Bay Municipality through customer relationship management
- Authors: Nogqala, Mbuzeli
- Date: 2017
- Subjects: Revenue management -- South Africa -- Nelson Mandela Bay Municipality Customer relations -- South Africa -- Nelson Mandela Bay Municipality -- Management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/20191 , vital:29155
- Description: In South Africa, local government as represented by a number of municipalities, is at the coal-face of service delivery. As such, the effect of community displeasure with poor service delivery is usually directed at this sphere of government. To maintain and develop infrastructure such as roads and electricity, municipalities are dependent on financial grants allocated by the national government. Notably, in the main, municipalities are required to maximise their own sources of revenue in order to render the requisite operational services/activities. Inevitably, municipal budgets are usually not sufficient to meet the unlimited service delivery obligations required by the local communities. The Nelson Mandela Bay Municipality (NMBM) is not immune to these interconnected revenue generation and service delivery priorities. The primary objective of the study is to establish an effective CRM framework that may enhance revenue collection at the NMBM. More specifically, the study investigates the nature of Customer Relationship Management (CRM) at the NMBM, factors that are responsible for ineffective CRM at the NMBM, the impacts of ineffective CRM on revenue collection at the municipality and the ways in which a CRM framework suitable to improve revenue collection at the NMBM can be established. Purposive sampling was used to select a sample of 130 respondents from a population of 420 employees in the Revenue Management and Customer Care Sub-directorate of the municipality. In view of the primary objective of the study, participants were drawn from relevant divisions such as, customer care, debtor management, rates and valuations, billing coordination and receipting. Of 130 questionnaires distributed, only 121 usable questionnaires were returned. This translates to a response rate of 93%. The empirical results reveal that there is a positive relationship between CRM and revenue management. In addition to this, the empirical results show that there is a positive relationship between customer satisfaction, customer engagement, customer value, customer experience, service standards and CRM. Furthermore, the findings of the study show that more needs to be done, as very little has been achieved by the NMBM in the context of implementing measures to enhance CRM. In this regard, the study provides managerial and future research recommendations.
- Full Text:
- Date Issued: 2017
- Authors: Nogqala, Mbuzeli
- Date: 2017
- Subjects: Revenue management -- South Africa -- Nelson Mandela Bay Municipality Customer relations -- South Africa -- Nelson Mandela Bay Municipality -- Management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/20191 , vital:29155
- Description: In South Africa, local government as represented by a number of municipalities, is at the coal-face of service delivery. As such, the effect of community displeasure with poor service delivery is usually directed at this sphere of government. To maintain and develop infrastructure such as roads and electricity, municipalities are dependent on financial grants allocated by the national government. Notably, in the main, municipalities are required to maximise their own sources of revenue in order to render the requisite operational services/activities. Inevitably, municipal budgets are usually not sufficient to meet the unlimited service delivery obligations required by the local communities. The Nelson Mandela Bay Municipality (NMBM) is not immune to these interconnected revenue generation and service delivery priorities. The primary objective of the study is to establish an effective CRM framework that may enhance revenue collection at the NMBM. More specifically, the study investigates the nature of Customer Relationship Management (CRM) at the NMBM, factors that are responsible for ineffective CRM at the NMBM, the impacts of ineffective CRM on revenue collection at the municipality and the ways in which a CRM framework suitable to improve revenue collection at the NMBM can be established. Purposive sampling was used to select a sample of 130 respondents from a population of 420 employees in the Revenue Management and Customer Care Sub-directorate of the municipality. In view of the primary objective of the study, participants were drawn from relevant divisions such as, customer care, debtor management, rates and valuations, billing coordination and receipting. Of 130 questionnaires distributed, only 121 usable questionnaires were returned. This translates to a response rate of 93%. The empirical results reveal that there is a positive relationship between CRM and revenue management. In addition to this, the empirical results show that there is a positive relationship between customer satisfaction, customer engagement, customer value, customer experience, service standards and CRM. Furthermore, the findings of the study show that more needs to be done, as very little has been achieved by the NMBM in the context of implementing measures to enhance CRM. In this regard, the study provides managerial and future research recommendations.
- Full Text:
- Date Issued: 2017
Improving the effectiveness of training in Sanlam sky
- Authors: Gonya, Odwa Otto
- Date: 2017
- Subjects: Employees -- Training of -- Evaluation Occupational training
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/15116 , vital:28140
- Description: Sanlam Sky is a division of the Sanlam Group focusing on the developing markets. The division plays an important role in employing previously disadvantaged people with little or no prior training and experience. Training is the methodical development of Knowledge, Skills and Attitude that is required by the employee to perform a given task on the job satisfactorily. The training department therefore has a key responsibility of providing effective training to the newly appointed and existing employees and can be viewed as an essential vehicle for company success. The study identified that investment is allocated for the training and development of employees over the past years at Sanlam Sky and the organisation has not measured the effectiveness of training prior to this study. The main purpose of this study was to determine if the training initiatives at Sanlam Sky are effective or not and then identify factors to improve effectiveness of training at Sanlam Sky. The study also addresses the question of “what are the assessment methods for measuring T&D effectiveness that exist in the literature?” The empirical study included the distribution of a self-administered questionnaire amongst operations and distribution staff. Data was collected from multiple sources including 88 respondents and triangulated with unstructured interview data sourced from the learning managers; this data was used to assess the effectiveness of training and develop strategies for improvement. The findings indicate that the training provided at Sanlam Sky is effective, however there are no clear guidelines on identifying training needs in the organisation. The study identified that there is no evaluation framework that is used at Sanlam Sky. The trainees are not given an opportunity to choose how they want their training to be facilitated. Hypothesis of the study was tested and finally the study offers recommendations to be implemented in improving the effectiveness of training.
- Full Text:
- Date Issued: 2017
- Authors: Gonya, Odwa Otto
- Date: 2017
- Subjects: Employees -- Training of -- Evaluation Occupational training
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/15116 , vital:28140
- Description: Sanlam Sky is a division of the Sanlam Group focusing on the developing markets. The division plays an important role in employing previously disadvantaged people with little or no prior training and experience. Training is the methodical development of Knowledge, Skills and Attitude that is required by the employee to perform a given task on the job satisfactorily. The training department therefore has a key responsibility of providing effective training to the newly appointed and existing employees and can be viewed as an essential vehicle for company success. The study identified that investment is allocated for the training and development of employees over the past years at Sanlam Sky and the organisation has not measured the effectiveness of training prior to this study. The main purpose of this study was to determine if the training initiatives at Sanlam Sky are effective or not and then identify factors to improve effectiveness of training at Sanlam Sky. The study also addresses the question of “what are the assessment methods for measuring T&D effectiveness that exist in the literature?” The empirical study included the distribution of a self-administered questionnaire amongst operations and distribution staff. Data was collected from multiple sources including 88 respondents and triangulated with unstructured interview data sourced from the learning managers; this data was used to assess the effectiveness of training and develop strategies for improvement. The findings indicate that the training provided at Sanlam Sky is effective, however there are no clear guidelines on identifying training needs in the organisation. The study identified that there is no evaluation framework that is used at Sanlam Sky. The trainees are not given an opportunity to choose how they want their training to be facilitated. Hypothesis of the study was tested and finally the study offers recommendations to be implemented in improving the effectiveness of training.
- Full Text:
- Date Issued: 2017
Improving the supply of subsidised housing in South Africa
- Authors: Bekker, Jakobus Petrus
- Date: 2017
- Subjects: Housing -- South Africa Housing subsidies -- South Africa , Low-income housing -- South Africa Public housing -- South Africa Housing development -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/19553 , vital:28893
- Description: Despite South African citizen’s constitutional right to adequate housing, Government’s housing delivery has been described as a complex, multi-stakeholder, multi-phase problem, exacerbated by political interference and corruption. Housing delivery in South Africa is ideologically and politically designed and executed. However, the government subsidised housing sector remains plagued by: huge and increasing backlogs; corruption; quality concerns, and recipient and stakeholder dissatisfaction. This includes the government subsidised housing construction sector, which faces issues such as: established contractors leaving the sector; late and failed completion; substandard quality; rework; cost overruns; late progress payments; and insolvencies. Moreover, government subsidised housing officials, which forms part of this sector, must contend with abandoned projects and appointing new contractors; shoddy workmanship from sub-standard contractors; remedial work, including demolition and rebuilding; and systemic problems such as staff shortages and under qualified staff. The process of Government’s ideological and political designed and execution may therefore not have considered certain practicalities relative to construction principles and practice. It therefore appears that there may be some relationship between the compatibility of Government’s housing ideological and political designed (policy) and execution and general construction principles and practice. It is clear from the related literature that government subsidised housing construction has mostly been investigated as an exercise observing from the outside in, and not from a construction sector perspective. The main purpose of this study is thus to explore housing policy and practice compatibility as a major obstacle to housing delivery in general and assess whether the current housing policy is sufficiently responsive to the requirements of the government subsidised housing sector by specifically describing and exploring the effects of Government’s housing procurement policies relative to the ability of the construction sector to supply government subsidised housing. More specifically, the study describes and explores corruption, quality; contractors and worker competency, and government capacity as specific consequences of housing policy and practice incompatibility, as well as factors contributing to recipient dissatisfaction and the housing backlog. Finally, based on the finding, a proposed framework for improving the supply of subsidised housing in South Africa has been developed. The methodology for this study adopted a post-positivist philosophy, embracing a quantitative approach using questionnaires, which incorporated mainly five-point Likert type scale, but also multiple-choice questions, as instruments for data collection. Three surveys were conducted, starting with a pilot study and followed by a primary study, during which a total of 2 884 potential participants within the construction sector across South Africa were randomly sampled and solicited to participate, of which 284 responded. The respondents consisted of four groups: general contractors (76); government housing officials (34); built environment professionals (137), and built environment suppliers (37). An electronic questionnaire was sent by email to all potential participants and allowed four weeks to complete the survey. Furthermore, a housing recipient survey was conducted among 100 randomly selected recipients of government subsidised housing in the Nelson Mandela Metropolitan area, by means of a structured interview using a paper based questionnaire, over a period of two weeks. The primary outcome measures used for this study were the ranked mean scores for mainly descriptive analysis and the Chi-square test, the 𝑡-test, Cohan’s d test, ANOVA and Scheffé test, using Cronbach's alpha as a measure of internal consistency of scale and validity, for inferential analyses and hypotheses testing. Hypothesis testing was founded upon Government’s worldview that its policies will not influence the operations of the construction sector relative to housing construction, and therefore tested respondents’ perspectives with respect to the impact that government policies have in terms of contractor operations and contractor success, as well as its contribution towards the housing backlog, substandard housing, recipient dissatisfaction and corruption. The following results were obtained by means of the hypothesis testing:Government housing procurement policies are inappropriate for application in the government subsidised housing sector. Respondents therefore disagree with the notion that government policy and practices do not impact contractor operations and contractor success, and thus the supply of houses; The application of government housing procurement policies leads to inadequate quality. Respondents therefore disagree with the notion that government preferential procurement policies do not impact quality; Government’s housing procurement policies inappropriately target emerging contractors. Respondents therefore disagree with the notion that Government’s targeting of emerging contractors does not impact housing supply; Government has inadequate capacity to address subsidised housing construction sector requirements in terms of housing projects. Respondents therefore disagree with the notion that Government has the capacity to address subsidised housing construction sector requirements in the supply of housing, and Government subsidised houses do not meet recipients’ expectations. Respondents therefore disagree with the notion that government subsidised houses do meet recipients’ expectations. It thus became apparent that housing supply is mostly inhibited by Government’s housing procurement policy, contributing to various factors, such as quality capability, contractor capability, systemic and administrative capacity, and resulting in recipient dissatisfaction. Using Pearson’s product moment correlation, a framework model was developed to illustrate the process flow, which revealed definitive statistical and practical relationships between these factors, and indeed reflects complex relationships between factors inhibiting supply and resulting in recipient dissatisfaction. To find an appropriate framework model for the purpose of improving housing supply, various sources were consulted. Based on the research question, together with the aims and objectives for this study, as well as the realisation that the problems associated with housing supply relate to the project management of the construction phase, which requires interventions for improving supply, it was decided that a results framework would be the most appropriate for this purpose. The proposed framework is therefore a graphical depiction of how the research process may be used to identify problems in the government subsidised housing sector, questioning how these may be resolved, setting strategies to improve the situation, evolving hypotheses and testing these hypotheses to establish the critical factors to be considered in the process of resolving the problem in the housing sector, by means of implementation and feedback.
- Full Text:
- Date Issued: 2017
- Authors: Bekker, Jakobus Petrus
- Date: 2017
- Subjects: Housing -- South Africa Housing subsidies -- South Africa , Low-income housing -- South Africa Public housing -- South Africa Housing development -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/19553 , vital:28893
- Description: Despite South African citizen’s constitutional right to adequate housing, Government’s housing delivery has been described as a complex, multi-stakeholder, multi-phase problem, exacerbated by political interference and corruption. Housing delivery in South Africa is ideologically and politically designed and executed. However, the government subsidised housing sector remains plagued by: huge and increasing backlogs; corruption; quality concerns, and recipient and stakeholder dissatisfaction. This includes the government subsidised housing construction sector, which faces issues such as: established contractors leaving the sector; late and failed completion; substandard quality; rework; cost overruns; late progress payments; and insolvencies. Moreover, government subsidised housing officials, which forms part of this sector, must contend with abandoned projects and appointing new contractors; shoddy workmanship from sub-standard contractors; remedial work, including demolition and rebuilding; and systemic problems such as staff shortages and under qualified staff. The process of Government’s ideological and political designed and execution may therefore not have considered certain practicalities relative to construction principles and practice. It therefore appears that there may be some relationship between the compatibility of Government’s housing ideological and political designed (policy) and execution and general construction principles and practice. It is clear from the related literature that government subsidised housing construction has mostly been investigated as an exercise observing from the outside in, and not from a construction sector perspective. The main purpose of this study is thus to explore housing policy and practice compatibility as a major obstacle to housing delivery in general and assess whether the current housing policy is sufficiently responsive to the requirements of the government subsidised housing sector by specifically describing and exploring the effects of Government’s housing procurement policies relative to the ability of the construction sector to supply government subsidised housing. More specifically, the study describes and explores corruption, quality; contractors and worker competency, and government capacity as specific consequences of housing policy and practice incompatibility, as well as factors contributing to recipient dissatisfaction and the housing backlog. Finally, based on the finding, a proposed framework for improving the supply of subsidised housing in South Africa has been developed. The methodology for this study adopted a post-positivist philosophy, embracing a quantitative approach using questionnaires, which incorporated mainly five-point Likert type scale, but also multiple-choice questions, as instruments for data collection. Three surveys were conducted, starting with a pilot study and followed by a primary study, during which a total of 2 884 potential participants within the construction sector across South Africa were randomly sampled and solicited to participate, of which 284 responded. The respondents consisted of four groups: general contractors (76); government housing officials (34); built environment professionals (137), and built environment suppliers (37). An electronic questionnaire was sent by email to all potential participants and allowed four weeks to complete the survey. Furthermore, a housing recipient survey was conducted among 100 randomly selected recipients of government subsidised housing in the Nelson Mandela Metropolitan area, by means of a structured interview using a paper based questionnaire, over a period of two weeks. The primary outcome measures used for this study were the ranked mean scores for mainly descriptive analysis and the Chi-square test, the 𝑡-test, Cohan’s d test, ANOVA and Scheffé test, using Cronbach's alpha as a measure of internal consistency of scale and validity, for inferential analyses and hypotheses testing. Hypothesis testing was founded upon Government’s worldview that its policies will not influence the operations of the construction sector relative to housing construction, and therefore tested respondents’ perspectives with respect to the impact that government policies have in terms of contractor operations and contractor success, as well as its contribution towards the housing backlog, substandard housing, recipient dissatisfaction and corruption. The following results were obtained by means of the hypothesis testing:Government housing procurement policies are inappropriate for application in the government subsidised housing sector. Respondents therefore disagree with the notion that government policy and practices do not impact contractor operations and contractor success, and thus the supply of houses; The application of government housing procurement policies leads to inadequate quality. Respondents therefore disagree with the notion that government preferential procurement policies do not impact quality; Government’s housing procurement policies inappropriately target emerging contractors. Respondents therefore disagree with the notion that Government’s targeting of emerging contractors does not impact housing supply; Government has inadequate capacity to address subsidised housing construction sector requirements in terms of housing projects. Respondents therefore disagree with the notion that Government has the capacity to address subsidised housing construction sector requirements in the supply of housing, and Government subsidised houses do not meet recipients’ expectations. Respondents therefore disagree with the notion that government subsidised houses do meet recipients’ expectations. It thus became apparent that housing supply is mostly inhibited by Government’s housing procurement policy, contributing to various factors, such as quality capability, contractor capability, systemic and administrative capacity, and resulting in recipient dissatisfaction. Using Pearson’s product moment correlation, a framework model was developed to illustrate the process flow, which revealed definitive statistical and practical relationships between these factors, and indeed reflects complex relationships between factors inhibiting supply and resulting in recipient dissatisfaction. To find an appropriate framework model for the purpose of improving housing supply, various sources were consulted. Based on the research question, together with the aims and objectives for this study, as well as the realisation that the problems associated with housing supply relate to the project management of the construction phase, which requires interventions for improving supply, it was decided that a results framework would be the most appropriate for this purpose. The proposed framework is therefore a graphical depiction of how the research process may be used to identify problems in the government subsidised housing sector, questioning how these may be resolved, setting strategies to improve the situation, evolving hypotheses and testing these hypotheses to establish the critical factors to be considered in the process of resolving the problem in the housing sector, by means of implementation and feedback.
- Full Text:
- Date Issued: 2017
Individual-related factors influencing knowledge-sharing intention in knowledge-intensive businesses
- Authors: Van Greunen, Conrad
- Date: 2017
- Subjects: Knowledge management Intellectual capital -- Management , Management -- Information services Organizational learning
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/21274 , vital:29469
- Description: It has become generally accepted to refer to today‟s global economy as a knowledge-based economy, since knowledge has increasingly become the resource, instead of a resource for wealth creation. The ability of businesses to harness the potential of intangible assets such as knowledge has become far more decisive than their ability to manage physical assets. In the implementation of knowledge management activities, knowledge sharing is recognised as an integral task and key enabler of knowledge management. Although knowledge sharing is regarded as one of the most crucial factors in the effective management of knowledge, in knowledge-intensive businesses in particular, it has also been established that most employees are reluctant to share knowledge. Research further confirms that the factors that promote or discourage knowledge-sharing behaviour in businesses are poorly understood and that knowledge management systems fail as a result of the misunderstanding of individual characteristics that could influence knowledge sharing. Moreover, the focus of knowledge-sharing literature, in terms of the unit of analysis, is rarely at an individual/micro level, although the role of individuals in the knowledge-sharing process is critical as tacit knowledge resides within the individual and knowledge sharing starts with individuals. Given the importance of understanding knowledge sharing of individuals in knowledge-intensive businesses – but noting the lack of existing systematic, integrated research that focuses on individual-related factors influencing knowledge sharing – the purpose of this study was to fill the gap in the current literature. As such, the primary objective of this research was to identify and empirically investigate the individual-related factors influencing the Knowledge-sharing intention of individual employees in knowledge-intensive businesses. The literature review revealed twelve constructs, namely Individuals’ awareness, Intrinsic motivation, Extrinsic motivation, Transactional psychological contract breach, Relational psychological contract breach, Relationship conflict, Task conflict, Extraversion, Neuroticism, Openness to experience, Agreeableness and Conscientiousness that could influence the dependent variable Knowledge-sharing intention in knowledge-intensive businesses. Various moderating relationships between the dependent and independent variables were also proposed, while seven demographic variables (Age, Gender, Language, Highest qualification, Ethnic background, Organisational tenure and Job tenure of the respondent) were identified as potential control variables. Each construct in the hypothesised model of individual-related factors influencing Knowledge-sharing intention was defined and operationalised using items sourced from validated measuring instruments in previous studies. Several self-generated items based on secondary sources were also formulated. A structured questionnaire was made available to respondents identified by means of the convenience sampling technique, and the data collected from 597 usable questionnaires was subjected to various statistical analyses. An exploratory factor analysis (EFA) was conducted which confirmed the unique factors present in the data, and Cronbach-alpha coefficients were calculated to confirm the reliability of the measuring instrument. Structural equation modelling (SEM) was the main statistical procedure used to test the significance of the relationships hypothesised between the various independent and dependent variables. A subset of SEM, namely general linear modelling (GLM) was used to determine the influence of selected demographic variables on Knowledge-sharing intention and to assess various moderating relationships as proposed in the hypothesised model. The main findings of this study were that personality traits are strong predictors of individual employees‟ willingness to share knowledge, and that the maturity of individuals, in terms of realising the significance and value of sharing their knowledge with others, and in recognising the intrinsic benefits of sharing, influence Knowledge-sharing intention. The main limitations of the study were the use of a convenience sampling technique to collect the data, as well as the dependence of self-report by respondents, which could lead to response bias. This study has added to the body of knowledge management research, in particular knowledge-sharing research, by investigating selected individual-related factors influencing the Knowledge-sharing intention of individuals in a particular subset of businesses, namely knowledge-intensive businesses, and focusing on a particular type of knowledge, namely tacit knowledge. From a business‟s perspective, this study offers recommendations and suggestions for managing these individual-related factors in such a way as to increase knowledge sharing among employees, and as a result, the effectiveness and competitive advantage of knowledge-intensive businesses.
- Full Text:
- Date Issued: 2017
Individual-related factors influencing knowledge-sharing intention in knowledge-intensive businesses
- Authors: Van Greunen, Conrad
- Date: 2017
- Subjects: Knowledge management Intellectual capital -- Management , Management -- Information services Organizational learning
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/21274 , vital:29469
- Description: It has become generally accepted to refer to today‟s global economy as a knowledge-based economy, since knowledge has increasingly become the resource, instead of a resource for wealth creation. The ability of businesses to harness the potential of intangible assets such as knowledge has become far more decisive than their ability to manage physical assets. In the implementation of knowledge management activities, knowledge sharing is recognised as an integral task and key enabler of knowledge management. Although knowledge sharing is regarded as one of the most crucial factors in the effective management of knowledge, in knowledge-intensive businesses in particular, it has also been established that most employees are reluctant to share knowledge. Research further confirms that the factors that promote or discourage knowledge-sharing behaviour in businesses are poorly understood and that knowledge management systems fail as a result of the misunderstanding of individual characteristics that could influence knowledge sharing. Moreover, the focus of knowledge-sharing literature, in terms of the unit of analysis, is rarely at an individual/micro level, although the role of individuals in the knowledge-sharing process is critical as tacit knowledge resides within the individual and knowledge sharing starts with individuals. Given the importance of understanding knowledge sharing of individuals in knowledge-intensive businesses – but noting the lack of existing systematic, integrated research that focuses on individual-related factors influencing knowledge sharing – the purpose of this study was to fill the gap in the current literature. As such, the primary objective of this research was to identify and empirically investigate the individual-related factors influencing the Knowledge-sharing intention of individual employees in knowledge-intensive businesses. The literature review revealed twelve constructs, namely Individuals’ awareness, Intrinsic motivation, Extrinsic motivation, Transactional psychological contract breach, Relational psychological contract breach, Relationship conflict, Task conflict, Extraversion, Neuroticism, Openness to experience, Agreeableness and Conscientiousness that could influence the dependent variable Knowledge-sharing intention in knowledge-intensive businesses. Various moderating relationships between the dependent and independent variables were also proposed, while seven demographic variables (Age, Gender, Language, Highest qualification, Ethnic background, Organisational tenure and Job tenure of the respondent) were identified as potential control variables. Each construct in the hypothesised model of individual-related factors influencing Knowledge-sharing intention was defined and operationalised using items sourced from validated measuring instruments in previous studies. Several self-generated items based on secondary sources were also formulated. A structured questionnaire was made available to respondents identified by means of the convenience sampling technique, and the data collected from 597 usable questionnaires was subjected to various statistical analyses. An exploratory factor analysis (EFA) was conducted which confirmed the unique factors present in the data, and Cronbach-alpha coefficients were calculated to confirm the reliability of the measuring instrument. Structural equation modelling (SEM) was the main statistical procedure used to test the significance of the relationships hypothesised between the various independent and dependent variables. A subset of SEM, namely general linear modelling (GLM) was used to determine the influence of selected demographic variables on Knowledge-sharing intention and to assess various moderating relationships as proposed in the hypothesised model. The main findings of this study were that personality traits are strong predictors of individual employees‟ willingness to share knowledge, and that the maturity of individuals, in terms of realising the significance and value of sharing their knowledge with others, and in recognising the intrinsic benefits of sharing, influence Knowledge-sharing intention. The main limitations of the study were the use of a convenience sampling technique to collect the data, as well as the dependence of self-report by respondents, which could lead to response bias. This study has added to the body of knowledge management research, in particular knowledge-sharing research, by investigating selected individual-related factors influencing the Knowledge-sharing intention of individuals in a particular subset of businesses, namely knowledge-intensive businesses, and focusing on a particular type of knowledge, namely tacit knowledge. From a business‟s perspective, this study offers recommendations and suggestions for managing these individual-related factors in such a way as to increase knowledge sharing among employees, and as a result, the effectiveness and competitive advantage of knowledge-intensive businesses.
- Full Text:
- Date Issued: 2017
Influence of sedimentological and hydrological processes on the distribution of the Spartina maritima salt marsh in the Keurbooms Estuary, Western Cape
- Authors: Mfikili, Athi Nkosibonile
- Date: 2017
- Subjects: Salt marshes -- South Africa -- Western Cape Estuarine hydrology -- South Africa -- Western Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/13004 , vital:27143
- Description: Salt marshes are some of the most productive ecosystems in the world and have been the centre of attention over the past few decades, due to their decline as a result of global climate change and anthropogenic impacts. The growth of salt marshes is determined by substrate type, soil conductivity and elevation. The permanently open Keurbooms Estuary along the south-east coast of South Africa is subjected to occasional fluvial flooding and its intertidal area lacks well developed salt marshes, with Spartina maritima restricted to the lower reaches of the Bitou tributary and a few sections of the Keurbooms tributary. Presumeably because of fine sediment habitat in the confluence and lower Bitou tributary. The salinity of the estuarine water ranges between 0.1 – 26.9 and 3.2 – 35.3 in the Bitou and Keurbooms tributaries respectively. A typical salt wedge salinity pattern is common in the Keurbooms tributary where saline water often intrudes underneath the freshwater, especially during high river flows. The following hypotheses were developed and tested in this study: The limited spatial distribution of S. maritima in the Keurbooms Estuary is due to limited availability of fine sediment habitat; and the source of the fine sediment in the estuary is the Bitou tributary rather than the Keurbooms tributary or the sea. It was further postulated that after sediment characteristics, floods are the major hydrological driver determining the distribution of S. maritima in the Keurbooms Estuary. The results of the surveys of the estuarine channel bottom sediments showed that the Keurbooms tributary was mostly characterized by the sand-size sediment fraction derived from the feldspathic and sandstone with evidence of fine sediment fractions restricted to the upper reaches at the confluence with Whiskey Creek. The Bitou was almost always composed of coarse sized sediments in the upper reaches, fine sediment deposits in the middle and lower reaches and medium sorted sand with almost no clay or calcium carbonate in the estuarine component below the confluence of the tributaries. These findings were further supported by the surface sediment deposited within the S. maritima intertidal salt marsh, which showed finer sediment deposits in the Bitou marsh compared to the Keurbooms marsh surface. Similar results were also found in the sediment cores, with the Keurbooms marsh sediment becoming finer with increasing depth whereas fine sediments reduced with depth in the Bitou marsh. The results of the sediment mineralogy indicated that the increased concentrations of clay minerals in the S. maritima surface sediments are derived from the Bokkeveld shale, siltstone and clay slate exposed above the N2 Bridge in the Keurbooms Estuary. GIS mapping shows that S. maritima has been declining over the past two decades, with rapid decreases especially evident after big flooding events. The GIS mapping also indicates that the patches of the S. maritima in the Keurbooms tributary are more exposed to big floods than the Bitou marsh. Despite showing an overall decline, S. maritima area coverage remained more consistent in the lower reaches of the Bitou tributary than in the Keurbooms tributary. Despite the larger and more persistent area cover, the S. maritima plants were shorter and less dense than the plants growing in the sandy substrate. The black/grey colouration of soil with increasing depth in the Bitou tributary was an indication of the reduced state of the soil caused by prolonged waterlogged conditions. The roots of S. maritima in both tributaries were mostly restricted to the sub-surface substrate layer (i.e. 0 – 0.25 m), although the Bitou populations showed more vegetative propagation than the Keurbooms populations. This mechanism of reproduction was also demonstrated during the transplant experiment which showed a greater number of new stem production in the fine sediment substrates compared to the sandy silt substrates. Although accretion rates were not determined in this study, the short-term sediment deposition rates revealed that sedimentation is active in the marshes of the Keurbooms Estuary. Therefore, in spite of showing a decline in area cover, the production of viable seed and observed vegetative propagation suggest that the S. maritima is likely to colonize open stable intertidal mudflats / sandflats, thus maintaining its distribution as an intertidal species in the salt marshes of the Keurbooms Estuary.
- Full Text:
- Date Issued: 2017
- Authors: Mfikili, Athi Nkosibonile
- Date: 2017
- Subjects: Salt marshes -- South Africa -- Western Cape Estuarine hydrology -- South Africa -- Western Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/13004 , vital:27143
- Description: Salt marshes are some of the most productive ecosystems in the world and have been the centre of attention over the past few decades, due to their decline as a result of global climate change and anthropogenic impacts. The growth of salt marshes is determined by substrate type, soil conductivity and elevation. The permanently open Keurbooms Estuary along the south-east coast of South Africa is subjected to occasional fluvial flooding and its intertidal area lacks well developed salt marshes, with Spartina maritima restricted to the lower reaches of the Bitou tributary and a few sections of the Keurbooms tributary. Presumeably because of fine sediment habitat in the confluence and lower Bitou tributary. The salinity of the estuarine water ranges between 0.1 – 26.9 and 3.2 – 35.3 in the Bitou and Keurbooms tributaries respectively. A typical salt wedge salinity pattern is common in the Keurbooms tributary where saline water often intrudes underneath the freshwater, especially during high river flows. The following hypotheses were developed and tested in this study: The limited spatial distribution of S. maritima in the Keurbooms Estuary is due to limited availability of fine sediment habitat; and the source of the fine sediment in the estuary is the Bitou tributary rather than the Keurbooms tributary or the sea. It was further postulated that after sediment characteristics, floods are the major hydrological driver determining the distribution of S. maritima in the Keurbooms Estuary. The results of the surveys of the estuarine channel bottom sediments showed that the Keurbooms tributary was mostly characterized by the sand-size sediment fraction derived from the feldspathic and sandstone with evidence of fine sediment fractions restricted to the upper reaches at the confluence with Whiskey Creek. The Bitou was almost always composed of coarse sized sediments in the upper reaches, fine sediment deposits in the middle and lower reaches and medium sorted sand with almost no clay or calcium carbonate in the estuarine component below the confluence of the tributaries. These findings were further supported by the surface sediment deposited within the S. maritima intertidal salt marsh, which showed finer sediment deposits in the Bitou marsh compared to the Keurbooms marsh surface. Similar results were also found in the sediment cores, with the Keurbooms marsh sediment becoming finer with increasing depth whereas fine sediments reduced with depth in the Bitou marsh. The results of the sediment mineralogy indicated that the increased concentrations of clay minerals in the S. maritima surface sediments are derived from the Bokkeveld shale, siltstone and clay slate exposed above the N2 Bridge in the Keurbooms Estuary. GIS mapping shows that S. maritima has been declining over the past two decades, with rapid decreases especially evident after big flooding events. The GIS mapping also indicates that the patches of the S. maritima in the Keurbooms tributary are more exposed to big floods than the Bitou marsh. Despite showing an overall decline, S. maritima area coverage remained more consistent in the lower reaches of the Bitou tributary than in the Keurbooms tributary. Despite the larger and more persistent area cover, the S. maritima plants were shorter and less dense than the plants growing in the sandy substrate. The black/grey colouration of soil with increasing depth in the Bitou tributary was an indication of the reduced state of the soil caused by prolonged waterlogged conditions. The roots of S. maritima in both tributaries were mostly restricted to the sub-surface substrate layer (i.e. 0 – 0.25 m), although the Bitou populations showed more vegetative propagation than the Keurbooms populations. This mechanism of reproduction was also demonstrated during the transplant experiment which showed a greater number of new stem production in the fine sediment substrates compared to the sandy silt substrates. Although accretion rates were not determined in this study, the short-term sediment deposition rates revealed that sedimentation is active in the marshes of the Keurbooms Estuary. Therefore, in spite of showing a decline in area cover, the production of viable seed and observed vegetative propagation suggest that the S. maritima is likely to colonize open stable intertidal mudflats / sandflats, thus maintaining its distribution as an intertidal species in the salt marshes of the Keurbooms Estuary.
- Full Text:
- Date Issued: 2017
Information as a service for dairy farmers
- Authors: Hart, James Andrew
- Date: 2017
- Subjects: Communication in agriculture -- South Africa Customer relations -- Management -- Agriculture -- Developing countries , Customer services -- Agriculture -- Developing countries
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/16000 , vital:28303
- Description: Communication with an organisation’s customers has become one of the most important factors that play a role in doing business today. Organisations that supply their customers with correct and different kinds of information create customer loyalty. Dairy farmers are no exception to the rule, because of the ongoing planning that dairy farmers need to do on a daily basis. Dairy farming in South Africa is extremely price sensitive and therefore information that can help in decision making plays an important role in making the right decision at the right time. The Internet has become an essential environment where information is readily available to anyone who has access to the technologies, such as smartphones, computers and tablets. Thus, it will be beneficial for both the organisation and the dairy farmer to have relevant information available on the organisation’s website. The information that is made available to the dairy farmers on these websites needs to be updated on a daily basis. The information must be relevant to dairy farming and must provide additional information besides the information that the specific organisation specialises in. Information as a Service (IaaS) for Dairy Farmers in South Africa is the focus of this research. The purpose of the investigation is to provide a means of providing the information needed by dairy farmers in South Africa, to enable them to make the right decisions on an operational level. The empirical data were collected, analysed and interpreted. From these findings a proposed communications framework is created to assist organisations to better communicate with dairy farmers in South Africa. The purpose of this research study is to design a framework which will provide IaaS to dairy farmers in South Africa. The research determined the different ways in which organisations can communicate with dairy farmers and the best time period in which that communication should take place for each specific communication strategy. Therefore, the aim of the research study was to determine the best ways to communicate with dairy farmers. A clear knowledge of the technologies that dairy farmers use to manage information was determined by the research study. The required information that dairy farmers need to make the correct decisions suitable for the requirement of farming on a practical level was determined by the research study.The proposed framework on Information as a Service for Dairy Farmers could help organisations to supply dairy farmers with the right information at the right time. The proposed framework will assist organisations dealing with dairy farmers easier and will also assist farmers, because the information provided as a service will be relevant to dairy farming. The treatise is an exploratory, mixed method research study which consists of literature reviews, surveys and cross-sectional studies. Secondary resources was used to conduct literature studies to determine the information needed by dairy farmers. A questionnaire was compiled from existing questionnaires as well as from literature studies and was completed by the respective respondents in the dairy farming community. The survey also consists of questions that determine what dairy farmers think about the service they receive from the organisations that they deal with. A cross-sectional study was used to compare the information needed specifically by pasture-based dairy farmers in relation to total mixed-ration-based dairy farmers. Both Descriptive and Inferential Statistical methods will be used for the analysis of the data. The communication systems can vary from Self-Help Groups to Mobile Technology. The type of communication system will depend on the systems that the organisation have available for their customers. The timing of communication with dairy farmers needs to be convenient and depends, according to literature, on the type of social networking that the organisation might use. An organisation that deals with dairy farmers needs to decide which Social Media site is most suitable when it needs to communicate with dairy farmers. The technology used to access information consist of Laptops, Smart Phones, Tablets and Desktops. Agricultural organisations provide information which dairy farmers need, to give them the correct guidance in performing good farming practices in order to produce safe, high-quality milk. The study will conclude with the development of a proposed communications framework where agricultural organisations can provide information as a service to dairy farmers.
- Full Text:
- Date Issued: 2017
- Authors: Hart, James Andrew
- Date: 2017
- Subjects: Communication in agriculture -- South Africa Customer relations -- Management -- Agriculture -- Developing countries , Customer services -- Agriculture -- Developing countries
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/16000 , vital:28303
- Description: Communication with an organisation’s customers has become one of the most important factors that play a role in doing business today. Organisations that supply their customers with correct and different kinds of information create customer loyalty. Dairy farmers are no exception to the rule, because of the ongoing planning that dairy farmers need to do on a daily basis. Dairy farming in South Africa is extremely price sensitive and therefore information that can help in decision making plays an important role in making the right decision at the right time. The Internet has become an essential environment where information is readily available to anyone who has access to the technologies, such as smartphones, computers and tablets. Thus, it will be beneficial for both the organisation and the dairy farmer to have relevant information available on the organisation’s website. The information that is made available to the dairy farmers on these websites needs to be updated on a daily basis. The information must be relevant to dairy farming and must provide additional information besides the information that the specific organisation specialises in. Information as a Service (IaaS) for Dairy Farmers in South Africa is the focus of this research. The purpose of the investigation is to provide a means of providing the information needed by dairy farmers in South Africa, to enable them to make the right decisions on an operational level. The empirical data were collected, analysed and interpreted. From these findings a proposed communications framework is created to assist organisations to better communicate with dairy farmers in South Africa. The purpose of this research study is to design a framework which will provide IaaS to dairy farmers in South Africa. The research determined the different ways in which organisations can communicate with dairy farmers and the best time period in which that communication should take place for each specific communication strategy. Therefore, the aim of the research study was to determine the best ways to communicate with dairy farmers. A clear knowledge of the technologies that dairy farmers use to manage information was determined by the research study. The required information that dairy farmers need to make the correct decisions suitable for the requirement of farming on a practical level was determined by the research study.The proposed framework on Information as a Service for Dairy Farmers could help organisations to supply dairy farmers with the right information at the right time. The proposed framework will assist organisations dealing with dairy farmers easier and will also assist farmers, because the information provided as a service will be relevant to dairy farming. The treatise is an exploratory, mixed method research study which consists of literature reviews, surveys and cross-sectional studies. Secondary resources was used to conduct literature studies to determine the information needed by dairy farmers. A questionnaire was compiled from existing questionnaires as well as from literature studies and was completed by the respective respondents in the dairy farming community. The survey also consists of questions that determine what dairy farmers think about the service they receive from the organisations that they deal with. A cross-sectional study was used to compare the information needed specifically by pasture-based dairy farmers in relation to total mixed-ration-based dairy farmers. Both Descriptive and Inferential Statistical methods will be used for the analysis of the data. The communication systems can vary from Self-Help Groups to Mobile Technology. The type of communication system will depend on the systems that the organisation have available for their customers. The timing of communication with dairy farmers needs to be convenient and depends, according to literature, on the type of social networking that the organisation might use. An organisation that deals with dairy farmers needs to decide which Social Media site is most suitable when it needs to communicate with dairy farmers. The technology used to access information consist of Laptops, Smart Phones, Tablets and Desktops. Agricultural organisations provide information which dairy farmers need, to give them the correct guidance in performing good farming practices in order to produce safe, high-quality milk. The study will conclude with the development of a proposed communications framework where agricultural organisations can provide information as a service to dairy farmers.
- Full Text:
- Date Issued: 2017
Integration of Eucalyptus coppice regeneration with mechanical harvesting in South Africa
- Schwegman, Kylle, Ackerman, S A
- Authors: Schwegman, Kylle , Ackerman, S A
- Date: 2017
- Subjects: Eucalyptus -- Regeneration Harvesting machinery
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/21131 , vital:29443
- Description: In South Africa, ca. 530 000 ha of the plantation area is planted to Eucalyptus spp. which are native to Australia. Commercially grown hardwoods account for 40.5% of the total area planted to trees, yet contribute more than 70% of the timber to the pulpwood market. This is largely attributed to the superior quality of fibre and pulping properties associated with eucalypt plantations, increases in global short-fibre pulp demands. This as well as the ability to reduce the temporary unplanted period and associated re-establishment costs when choosing to regenerate a stand through coppice management. With the unlikelihood of additional eucalypts being introduced into South Africa, and a reduction in genetic gains from 3rd-4th generation tree breading programmes, most of the eucalypts currently planted will be managed for at least one coppice rotation before replanting with improved genetic material if available. This together with the increased use of mechanised silvicultural and harvesting operations, concerns have been raised as to whether the integration of Eucalyptus coppice regeneration and mechanical harvesting in South Africa is both possible and financially viable for the forest industry to practise. The need for integration becomes more important as often mechanised systems have smaller tolerance levels when compared to manual systems. The first trial was situated in Zululand and was implemented to determine the type and severity of stump damage, coppicing potential and coppice growth over the rotation, associated with four types of harvesting and extraction systems on coppice regeneration. Results obtained from these four treatments (harvesting systems that ranged from manual to fully mechanised cut-to-length systems), found that irrespective of the harvesting system used, more damage occurred to the top than bottom half of the stump, with a significant decrease in coppice regrowth with increasing stump damage. Most damage and least coppice regrowth occurred in the extraction rows where the damage recorded could be attributed to vehicle movement, tear-outs and/or log stripping. There was no significant difference between the harvesting systems in terms of stump mortality, final stem stocking and rotation-end volume. Although this trial indicates that the harvesting systems tested had no impact on tree production the severity of damage and/or difference may have been masked by the excellent coppice potential of the species used for this trial (E. grandis x E. urophylla). Based on the results obtained in the first trial, and using five existing data sets, each data set consisted of four treatment sub-sets (4m_8m_s; 2m_8m_s; 4m_8m_BOP; 2m_8m_Or) where possible to determine the cost benefits associated with each treatment at various levels of stocking over a full rotation period. BOP (best operating practice) and Or (original stocking) refers to treatments with two stems stump-1, and s (single stem) refers to one stem stump-1. Within each of the four treatment sub-sets, treatments with three levels of stump survival were sought (60%; 80%; 100%), in order to assess financial viability of harvesting different coppice regimes (one coppice stem and two coppiced stems stump-1) using a fully mechanised cut-to-length harvesting system was tested. No differences were found between one coppice stem and two coppiced stems stump-1 in terms of financial returns (internal rate of return). Of the four treatment sub-sets (4m_8m_s; 2m_8m_s; 4m_8m_BOP; 2m_8m_Or), treatments which had two coppice stems stump-1 lead to increased harvesting cost, while coppice stumps with one stem favours mechanised harvesting and reduced harvesting costs. The final trial, which was also implemented in Zululand, tested the timing of reduction of one coppice stem stump-1 at various stump and stem densities in order to develop an appropriate coppice regime that could favour fully mechanised CTL harvesting systems. Although significant differences were detected at 23 months between the additional control (current recommendation) and the various Reduction_ht (3.5 m, 4.5 m, and 6.5 m) treatments for Dbh, Ba, and Stocking. It is likely that these differences may become less with time due to the decrease in absolute and relative differences between the various treatments with time. This thesis indicates that it is possible to successfully integrate eucalypt coppice regeneration and fully mechanised CTL harvesting. As the results obtained showed that despite the harvesting-associated damage found, no significant difference occurred between the harvesting systems tested in terms of stump mortality, stem stocking (after the final reduction) and rotation-end volume. With regards to the financial implications (using internal rates of return - IRR) associated with harvesting coppice stands of one or two stems stump-1, no clear cost-benefits were found between either of these two treatment scenarios. As those factors that contribute to increased volumes per hectare (increased stem numbers and the retention of two stems stump-1), tend to become normalised across a treatment sub-set, this results in increased harvesting costs with a reduction in the IRR. Coppice management regimes need to be investigated that favour fully mechanised CTL harvesting systems (fewer stems to harvest, but with increased volumes per stem). This includes a reduction to one stem stump-1, as opposed to the current recommendations where some stumps have two stems, such as was tested in the final trial. Although initial results were promising, rotation-end data would be needed to determine any longer term impacts from carrying out an early thinning of coppice shoots to one stem stump-1. Future research needs to be carried out to: determine the influence of mechanised harvesting and extraction for difference species of eucalypts, especially for those that do not coppice as well as the species tested in these trials (Eucalyptus grandis x Eucalyptus urophylla), develop harvesting productivity and/or volume models for coppiced stands of one and two stems stump-1 for different Eucalyptus spp., determine financial returns using specifically designed coppice management regimes which optimise the integration of both mechanical harvesting and silvicultural perations.
- Full Text:
- Date Issued: 2017
- Authors: Schwegman, Kylle , Ackerman, S A
- Date: 2017
- Subjects: Eucalyptus -- Regeneration Harvesting machinery
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/21131 , vital:29443
- Description: In South Africa, ca. 530 000 ha of the plantation area is planted to Eucalyptus spp. which are native to Australia. Commercially grown hardwoods account for 40.5% of the total area planted to trees, yet contribute more than 70% of the timber to the pulpwood market. This is largely attributed to the superior quality of fibre and pulping properties associated with eucalypt plantations, increases in global short-fibre pulp demands. This as well as the ability to reduce the temporary unplanted period and associated re-establishment costs when choosing to regenerate a stand through coppice management. With the unlikelihood of additional eucalypts being introduced into South Africa, and a reduction in genetic gains from 3rd-4th generation tree breading programmes, most of the eucalypts currently planted will be managed for at least one coppice rotation before replanting with improved genetic material if available. This together with the increased use of mechanised silvicultural and harvesting operations, concerns have been raised as to whether the integration of Eucalyptus coppice regeneration and mechanical harvesting in South Africa is both possible and financially viable for the forest industry to practise. The need for integration becomes more important as often mechanised systems have smaller tolerance levels when compared to manual systems. The first trial was situated in Zululand and was implemented to determine the type and severity of stump damage, coppicing potential and coppice growth over the rotation, associated with four types of harvesting and extraction systems on coppice regeneration. Results obtained from these four treatments (harvesting systems that ranged from manual to fully mechanised cut-to-length systems), found that irrespective of the harvesting system used, more damage occurred to the top than bottom half of the stump, with a significant decrease in coppice regrowth with increasing stump damage. Most damage and least coppice regrowth occurred in the extraction rows where the damage recorded could be attributed to vehicle movement, tear-outs and/or log stripping. There was no significant difference between the harvesting systems in terms of stump mortality, final stem stocking and rotation-end volume. Although this trial indicates that the harvesting systems tested had no impact on tree production the severity of damage and/or difference may have been masked by the excellent coppice potential of the species used for this trial (E. grandis x E. urophylla). Based on the results obtained in the first trial, and using five existing data sets, each data set consisted of four treatment sub-sets (4m_8m_s; 2m_8m_s; 4m_8m_BOP; 2m_8m_Or) where possible to determine the cost benefits associated with each treatment at various levels of stocking over a full rotation period. BOP (best operating practice) and Or (original stocking) refers to treatments with two stems stump-1, and s (single stem) refers to one stem stump-1. Within each of the four treatment sub-sets, treatments with three levels of stump survival were sought (60%; 80%; 100%), in order to assess financial viability of harvesting different coppice regimes (one coppice stem and two coppiced stems stump-1) using a fully mechanised cut-to-length harvesting system was tested. No differences were found between one coppice stem and two coppiced stems stump-1 in terms of financial returns (internal rate of return). Of the four treatment sub-sets (4m_8m_s; 2m_8m_s; 4m_8m_BOP; 2m_8m_Or), treatments which had two coppice stems stump-1 lead to increased harvesting cost, while coppice stumps with one stem favours mechanised harvesting and reduced harvesting costs. The final trial, which was also implemented in Zululand, tested the timing of reduction of one coppice stem stump-1 at various stump and stem densities in order to develop an appropriate coppice regime that could favour fully mechanised CTL harvesting systems. Although significant differences were detected at 23 months between the additional control (current recommendation) and the various Reduction_ht (3.5 m, 4.5 m, and 6.5 m) treatments for Dbh, Ba, and Stocking. It is likely that these differences may become less with time due to the decrease in absolute and relative differences between the various treatments with time. This thesis indicates that it is possible to successfully integrate eucalypt coppice regeneration and fully mechanised CTL harvesting. As the results obtained showed that despite the harvesting-associated damage found, no significant difference occurred between the harvesting systems tested in terms of stump mortality, stem stocking (after the final reduction) and rotation-end volume. With regards to the financial implications (using internal rates of return - IRR) associated with harvesting coppice stands of one or two stems stump-1, no clear cost-benefits were found between either of these two treatment scenarios. As those factors that contribute to increased volumes per hectare (increased stem numbers and the retention of two stems stump-1), tend to become normalised across a treatment sub-set, this results in increased harvesting costs with a reduction in the IRR. Coppice management regimes need to be investigated that favour fully mechanised CTL harvesting systems (fewer stems to harvest, but with increased volumes per stem). This includes a reduction to one stem stump-1, as opposed to the current recommendations where some stumps have two stems, such as was tested in the final trial. Although initial results were promising, rotation-end data would be needed to determine any longer term impacts from carrying out an early thinning of coppice shoots to one stem stump-1. Future research needs to be carried out to: determine the influence of mechanised harvesting and extraction for difference species of eucalypts, especially for those that do not coppice as well as the species tested in these trials (Eucalyptus grandis x Eucalyptus urophylla), develop harvesting productivity and/or volume models for coppiced stands of one and two stems stump-1 for different Eucalyptus spp., determine financial returns using specifically designed coppice management regimes which optimise the integration of both mechanical harvesting and silvicultural perations.
- Full Text:
- Date Issued: 2017
Intelligence based error detection and classification for 3D measurement systems
- Van Rooyen, Ivän Jan-Richard
- Authors: Van Rooyen, Ivän Jan-Richard
- Date: 2017
- Subjects: Computer integrated manufacturing systems Manufacturing processes -- Automation , Computers, Special purpose Neural networks (Computer science)
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/21241 , vital:29461
- Description: For many years 2D machine vision has been used to perform automated inspection and measuring in the manufacturing environment. A strong drive to automate manufacturing has meant improvements in robotics and sensor technologies. So has machine vision seen a steady movement away from 2D and towards 3D. It is necessary to research and develop software that can use these new 3D sensing equipment in novel and useful ways. One task that is particularly useful, for a variety of situations is object recognition. It was hypothesised that it should be possible to train artificial neural networks to recognise 3D objects. For this purpose a 3D laser scanner was developed. This scanner and its software was developed and tested first in a virtual environment and what was learned there was then used to implemented an actual scanner. This scanner served the purpose of verifying what was done in the virtual environment. Neural networks of different sized were trained to establish whether they are a feasible classifier for the task of object recognition. Testing showed that, with the correct preprocessing, it is possible to perform 3D object recognition on simple geometric shapes by means of artificial neural networks.
- Full Text:
- Date Issued: 2017
- Authors: Van Rooyen, Ivän Jan-Richard
- Date: 2017
- Subjects: Computer integrated manufacturing systems Manufacturing processes -- Automation , Computers, Special purpose Neural networks (Computer science)
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/21241 , vital:29461
- Description: For many years 2D machine vision has been used to perform automated inspection and measuring in the manufacturing environment. A strong drive to automate manufacturing has meant improvements in robotics and sensor technologies. So has machine vision seen a steady movement away from 2D and towards 3D. It is necessary to research and develop software that can use these new 3D sensing equipment in novel and useful ways. One task that is particularly useful, for a variety of situations is object recognition. It was hypothesised that it should be possible to train artificial neural networks to recognise 3D objects. For this purpose a 3D laser scanner was developed. This scanner and its software was developed and tested first in a virtual environment and what was learned there was then used to implemented an actual scanner. This scanner served the purpose of verifying what was done in the virtual environment. Neural networks of different sized were trained to establish whether they are a feasible classifier for the task of object recognition. Testing showed that, with the correct preprocessing, it is possible to perform 3D object recognition on simple geometric shapes by means of artificial neural networks.
- Full Text:
- Date Issued: 2017
Investigating public participation strategies in the provision of low-income housing in the Buffalo City Metropolitan Municipality
- Authors: Batyi, Thomas
- Date: 2017
- Subjects: Municipal government -- South Africa -- Eastern Cape -- Citizen participation , Municipal services -- South Africa -- Eastern Cape -- Citizen participation Low-income housing -- South Africa -- Eastern Cape Public housing -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/14543 , vital:27749
- Description: This study investigates the public participation strategies in the provision of low –income housing. The purpose is to look at the effectiveness of the public participation strategies. In order to achieve this goal, it was necessary to review literature on public participation to advance the argument that public participation is an integral part of local government and the community at large. Currently, public participation permeates all legislation, impacting on local government in South Africa. It enhances individual and group esteem and enables municipal functionaries to understand crucial issues that serve as an impetus for policymaking. A supportive objective was to identify challenges that may be experienced by the Buffalo City Metropolitan Municipality with public participation in low-cost houses. The study adopted qualitative data collection instruments, which were used to collect data. The face-to-face interviews with the total sample of this study consisted of fourteen (14) participants comprising six (6) municipal officials, (3 officials from each of the Public Participation and the Integrated Development Units) and four (4) ward councillors and committee members, one (1) each from wards 1, 6, 46 and 47. For the purpose of this study, purposive (non-probability) or judgemental sampling was used. The qualitative data was analysed thematically using coding and categorising data into themes. The findings of this study revealed that there is a lack of public participation by the local communities in development projects. Also, ward committees do not have a platform to participate at the representative forums and during the IDP/budget hearings. In this regard, the study made recommendations on the participation strategies in order to tackle the challenges faced in the provision of low-income housing.
- Full Text:
- Date Issued: 2017
- Authors: Batyi, Thomas
- Date: 2017
- Subjects: Municipal government -- South Africa -- Eastern Cape -- Citizen participation , Municipal services -- South Africa -- Eastern Cape -- Citizen participation Low-income housing -- South Africa -- Eastern Cape Public housing -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/14543 , vital:27749
- Description: This study investigates the public participation strategies in the provision of low –income housing. The purpose is to look at the effectiveness of the public participation strategies. In order to achieve this goal, it was necessary to review literature on public participation to advance the argument that public participation is an integral part of local government and the community at large. Currently, public participation permeates all legislation, impacting on local government in South Africa. It enhances individual and group esteem and enables municipal functionaries to understand crucial issues that serve as an impetus for policymaking. A supportive objective was to identify challenges that may be experienced by the Buffalo City Metropolitan Municipality with public participation in low-cost houses. The study adopted qualitative data collection instruments, which were used to collect data. The face-to-face interviews with the total sample of this study consisted of fourteen (14) participants comprising six (6) municipal officials, (3 officials from each of the Public Participation and the Integrated Development Units) and four (4) ward councillors and committee members, one (1) each from wards 1, 6, 46 and 47. For the purpose of this study, purposive (non-probability) or judgemental sampling was used. The qualitative data was analysed thematically using coding and categorising data into themes. The findings of this study revealed that there is a lack of public participation by the local communities in development projects. Also, ward committees do not have a platform to participate at the representative forums and during the IDP/budget hearings. In this regard, the study made recommendations on the participation strategies in order to tackle the challenges faced in the provision of low-income housing.
- Full Text:
- Date Issued: 2017
Investigating sustainable supply chain practices within the luxury brand market
- Authors: Colesky, Yolanda
- Date: 2017
- Subjects: Business logistics -- Management Retail trade -- Management , Fashion merchandising Physical distribution of goods -- Management Clothing trade
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/14917 , vital:27902
- Description: Luxury fashion brands seem to contradict sustainability. The values of sustainability are commonly associated with terms such as sharing, collaboration, austerity, and collective thinking. Luxury, however, is associated with excess, self-indulgence, delight and decadence (Kapferer & Bastien, 2012:360). Further paradoxes exist where the apparel of the luxury consumer is often manufactured by labourers in low wage-paying producing countries. High wastage is evident in the seasonality of the fashion industry. However, work opportunities are created by the fickleness of the fashion industry and the constant need to own the most current designs (Black, 2012:8). Owing to the high visibility of luxury fashion and the contractions between one -- on the one hand -- supplying income to families by way of employment and -- on the other hand -- not complying to sustainable international human resource practices, fashion brands are the focus of many non-governmental organisations (NGOs) that use the mass media to expose any social wrongdoing in the industry. Luxury fashion brands are constantly in the spotlight, as highlighted in articles posted by the Clean Clothes campaign, a custodian for employees in the global garment industries; Greenpeace; and People for the Ethical Treatment of Animals (PETA). An example of such practices was when Greenpeace reported in 2009 that shoe brands such as Timberland and Clarks were manufactured from leather sourced from the hides of cattle in illegally deforested areas in Brazil. This provided negative publicity for these luxury shoe brands as well as for the Brazilian government that was financing this project (Vurro, Russo & Perrini, 2009:609). The luxury fashion brand industry, as well as the consumers of luxury fashion labels, are accused -- often only for the sake of sensationalism -- of living in the lap of luxury whilst maintaining a supply chain that is riddled with unsustainable practices. The social structure and hierarchy of patrons within a community have, since the Middle Ages, been signalled by the clothes they wore. Social class was a birthright. Today, sporting luxury brands continues to serve as status symbols, but unlike mediaeval times, it is not limited to people with a high social standing at birth as one can work for status, and purchase the items because one deserves them. (Han, Nunes, & Drèze, 2010:15). In 2009, during the International Herald Tribune (IHT) Suzy Menkes, the fashion editor at The Herald, called for “luxury”’ and “fashion” to be separated. Luxury prides itself in its handcrafted garments manufactured by respected tradesmen in the industry. The outcome is that the manufactured goods are made to last a lifetime (Gibson, 2012:23).
- Full Text:
- Date Issued: 2017
- Authors: Colesky, Yolanda
- Date: 2017
- Subjects: Business logistics -- Management Retail trade -- Management , Fashion merchandising Physical distribution of goods -- Management Clothing trade
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/14917 , vital:27902
- Description: Luxury fashion brands seem to contradict sustainability. The values of sustainability are commonly associated with terms such as sharing, collaboration, austerity, and collective thinking. Luxury, however, is associated with excess, self-indulgence, delight and decadence (Kapferer & Bastien, 2012:360). Further paradoxes exist where the apparel of the luxury consumer is often manufactured by labourers in low wage-paying producing countries. High wastage is evident in the seasonality of the fashion industry. However, work opportunities are created by the fickleness of the fashion industry and the constant need to own the most current designs (Black, 2012:8). Owing to the high visibility of luxury fashion and the contractions between one -- on the one hand -- supplying income to families by way of employment and -- on the other hand -- not complying to sustainable international human resource practices, fashion brands are the focus of many non-governmental organisations (NGOs) that use the mass media to expose any social wrongdoing in the industry. Luxury fashion brands are constantly in the spotlight, as highlighted in articles posted by the Clean Clothes campaign, a custodian for employees in the global garment industries; Greenpeace; and People for the Ethical Treatment of Animals (PETA). An example of such practices was when Greenpeace reported in 2009 that shoe brands such as Timberland and Clarks were manufactured from leather sourced from the hides of cattle in illegally deforested areas in Brazil. This provided negative publicity for these luxury shoe brands as well as for the Brazilian government that was financing this project (Vurro, Russo & Perrini, 2009:609). The luxury fashion brand industry, as well as the consumers of luxury fashion labels, are accused -- often only for the sake of sensationalism -- of living in the lap of luxury whilst maintaining a supply chain that is riddled with unsustainable practices. The social structure and hierarchy of patrons within a community have, since the Middle Ages, been signalled by the clothes they wore. Social class was a birthright. Today, sporting luxury brands continues to serve as status symbols, but unlike mediaeval times, it is not limited to people with a high social standing at birth as one can work for status, and purchase the items because one deserves them. (Han, Nunes, & Drèze, 2010:15). In 2009, during the International Herald Tribune (IHT) Suzy Menkes, the fashion editor at The Herald, called for “luxury”’ and “fashion” to be separated. Luxury prides itself in its handcrafted garments manufactured by respected tradesmen in the industry. The outcome is that the manufactured goods are made to last a lifetime (Gibson, 2012:23).
- Full Text:
- Date Issued: 2017
Investigating the benefits of establishing a wool scouring plant in Lesotho
- Authors: Setipa, Tsepang Benjamine
- Date: 2017
- Subjects: Wool industry -- Lesotho Sheep industry -- Lesotho , Economic development -- Lesotho Lesotho -- Economic conditions -- 21st century
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/20428 , vital:29286
- Description: Lesotho’s current production of raw wool is sold to global markets through South African wool merchants. Lesotho does not have any wool processing facilities and as such, the wool from Lesotho gets processed in South Africa or sold to international markets like China where it is processed. Since 2012, the government of Lesotho has publicly showed interest in developing a wool scouring plant that would process locally produced wool instead of selling it in its raw unprocessed form to international markets. The understanding by the Lesotho government was underpinned by perceived economic benefits that could be realised by the country and the wool industry of Lesotho, if the wool scouring plant was developed. The wool industry is important to the economy of Lesotho and as such, wool production in Lesotho contributes to the living standards in the rural areas as their lives are highly depended on the production of wool. A vibrant wool industry in Lesotho therefore has the potential to contribute to the growth of the economy, the manufacturing sector, employment at both the herder and the manufacturing levels, and the export sector. Wool scouring or wool washing is the early stage processing of greasy wool. The purpose of wool scouring is to extract grease, dirt, unpleasant smell and other foreign matter from the greasy wool. Raw wool fibers contain fat, suint (sheep sweat salts), plant material and minerals. It is therefore necessary to remove these from wool by scouring with a combination of detergents, wetting agents and emulsifiers before further processing. Wool can lose up to 30% of its original weight during this process. The Lesotho government feels that there is a need to develop a wool scouring plant in Lesotho because Lesotho does not benefit from the South African wool scouring processes and anything that happens post that process. Given that no viability studies had been conducted in Lesotho to motivate the government’s interest in developing a wool scouring plant, this study was conducted with the aim to investigate the benefits of developing a wool scouring plant in Lesotho. The research design employed in this study was a mixed method, which is a combination of positivism (quantitative) and interpretivism (qualitative) data collection and analysis in parallel form. In terms of the qualitative component of the study, structured interviews were conducted, governed by in-depth interview guidelines developed by the researcher. A questionnaire was used for the qualitative component of the study. Among some of its findings and recommendations the study recommends that there is insufficient wool produced in Lesotho to support a local wool scouring plant, the government of Lesotho should rather focus their effort on the improvement of the wool production value chain to assist farmers. The study finds no grounds for the justification of the development of a local scouring plant in Lesotho and recommends that for such propositions to be made publicly, at least proper groundwork should be undertaken to investigate the technical feasibility of developing the scouring plant.
- Full Text:
- Date Issued: 2017
- Authors: Setipa, Tsepang Benjamine
- Date: 2017
- Subjects: Wool industry -- Lesotho Sheep industry -- Lesotho , Economic development -- Lesotho Lesotho -- Economic conditions -- 21st century
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/20428 , vital:29286
- Description: Lesotho’s current production of raw wool is sold to global markets through South African wool merchants. Lesotho does not have any wool processing facilities and as such, the wool from Lesotho gets processed in South Africa or sold to international markets like China where it is processed. Since 2012, the government of Lesotho has publicly showed interest in developing a wool scouring plant that would process locally produced wool instead of selling it in its raw unprocessed form to international markets. The understanding by the Lesotho government was underpinned by perceived economic benefits that could be realised by the country and the wool industry of Lesotho, if the wool scouring plant was developed. The wool industry is important to the economy of Lesotho and as such, wool production in Lesotho contributes to the living standards in the rural areas as their lives are highly depended on the production of wool. A vibrant wool industry in Lesotho therefore has the potential to contribute to the growth of the economy, the manufacturing sector, employment at both the herder and the manufacturing levels, and the export sector. Wool scouring or wool washing is the early stage processing of greasy wool. The purpose of wool scouring is to extract grease, dirt, unpleasant smell and other foreign matter from the greasy wool. Raw wool fibers contain fat, suint (sheep sweat salts), plant material and minerals. It is therefore necessary to remove these from wool by scouring with a combination of detergents, wetting agents and emulsifiers before further processing. Wool can lose up to 30% of its original weight during this process. The Lesotho government feels that there is a need to develop a wool scouring plant in Lesotho because Lesotho does not benefit from the South African wool scouring processes and anything that happens post that process. Given that no viability studies had been conducted in Lesotho to motivate the government’s interest in developing a wool scouring plant, this study was conducted with the aim to investigate the benefits of developing a wool scouring plant in Lesotho. The research design employed in this study was a mixed method, which is a combination of positivism (quantitative) and interpretivism (qualitative) data collection and analysis in parallel form. In terms of the qualitative component of the study, structured interviews were conducted, governed by in-depth interview guidelines developed by the researcher. A questionnaire was used for the qualitative component of the study. Among some of its findings and recommendations the study recommends that there is insufficient wool produced in Lesotho to support a local wool scouring plant, the government of Lesotho should rather focus their effort on the improvement of the wool production value chain to assist farmers. The study finds no grounds for the justification of the development of a local scouring plant in Lesotho and recommends that for such propositions to be made publicly, at least proper groundwork should be undertaken to investigate the technical feasibility of developing the scouring plant.
- Full Text:
- Date Issued: 2017
Investigating the perceptions of the relationship between vocational education and the labour market: a case study of FET college students
- Authors: Sibiya, Anthony Tolika
- Date: 2017
- Subjects: Vocational education -- South Africa Training needs -- South Africa -- Students , School-to-work transition -- South Africa Labor market -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/20406 , vital:29280
- Description: The study sought to investigate the perceptions of TVET students regarding vocational education and its relation to the labour market. It hoped to illuminate connections or disconnections between vocational education and employment. The research emanated from the prevailing view that TVET education by its very nature is work-oriented and therefore those who enroll in TVET colleges are able to find employment. Furthermore, that conceptually the TVET curriculum was and continues to be regarded as skills-based for labour market demands thereby enhancing national competiveness and economic growth. Qualitative questionnaires, which are open-ended in nature, were used to gather facts about students’ beliefs and experiences regarding certain engineering programmes and services offered at TVET colleges. Non-probability sampling was used to select one hundred and thirteen (113) participants who voluntarily completed qualitative questionnaires, which were structured to elicit the required information, and the results reveal divergent views shared by students. There are those who feel very strongly that a TVET qualification, in engineering in particular, leads to employment due to its demand and the fact that the institution generally assists students through the placement unit makes it even easier to find employment. Other students firmly believed that whatever qualifications one attained, the world of work cannot accommodate them, as they do not have work experience. They felt this was unfair because they are unable to find employment without being properly monitored and trained by the very same industry that hopes to employ them in the near future. They argue that the only problem pertaining to unemployment is job scarcity, rather than skills scarcity. The research is framed within the human capital theory. Research findings reveal the fact that there is no link between vocational education and the labour market and as a result employment is not easy. There are personal skills required but they are not available in our educational curriculum, which focuses on educational aspirations. The research further posits five distinct but necessary interventions that students are suggesting in order to increase their lack of experience in the job market.
- Full Text:
- Date Issued: 2017
- Authors: Sibiya, Anthony Tolika
- Date: 2017
- Subjects: Vocational education -- South Africa Training needs -- South Africa -- Students , School-to-work transition -- South Africa Labor market -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/20406 , vital:29280
- Description: The study sought to investigate the perceptions of TVET students regarding vocational education and its relation to the labour market. It hoped to illuminate connections or disconnections between vocational education and employment. The research emanated from the prevailing view that TVET education by its very nature is work-oriented and therefore those who enroll in TVET colleges are able to find employment. Furthermore, that conceptually the TVET curriculum was and continues to be regarded as skills-based for labour market demands thereby enhancing national competiveness and economic growth. Qualitative questionnaires, which are open-ended in nature, were used to gather facts about students’ beliefs and experiences regarding certain engineering programmes and services offered at TVET colleges. Non-probability sampling was used to select one hundred and thirteen (113) participants who voluntarily completed qualitative questionnaires, which were structured to elicit the required information, and the results reveal divergent views shared by students. There are those who feel very strongly that a TVET qualification, in engineering in particular, leads to employment due to its demand and the fact that the institution generally assists students through the placement unit makes it even easier to find employment. Other students firmly believed that whatever qualifications one attained, the world of work cannot accommodate them, as they do not have work experience. They felt this was unfair because they are unable to find employment without being properly monitored and trained by the very same industry that hopes to employ them in the near future. They argue that the only problem pertaining to unemployment is job scarcity, rather than skills scarcity. The research is framed within the human capital theory. Research findings reveal the fact that there is no link between vocational education and the labour market and as a result employment is not easy. There are personal skills required but they are not available in our educational curriculum, which focuses on educational aspirations. The research further posits five distinct but necessary interventions that students are suggesting in order to increase their lack of experience in the job market.
- Full Text:
- Date Issued: 2017
Key factors behind the success of Somali owned spaza shops in Soweto
- Authors: Mini, Solomzi
- Date: 2017
- Subjects: Informal sector (Economics) -- South Africa -- Soweto Somalis -- South Africa -- Soweto
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/19393 , vital:28867
- Description: Informal retailing is a significant contributor to the South African economy in general and the retail sector specifically. It is a sector that is dominated by immigrant traders, while the numbers of local traders are shrinking by the day. The immigrant traders have outmaneuvered their local counterparts in this market through their ability to put together a compelling value proposition to the customers. Consequently, the focus of this research is to get a better understanding of the basis of their overall competitive advantage. Similar to previous research, this study concludes that the immigrant trader’s competitive advantage has competitive pricing as its foundation. However, this study had gone beyond the existing research which highlights competitive pricing as the reason for this success by suggesting that sound retailing principles which include good customer service, broader product range, hard work and lastly, a low cost business model are major contributors towards this success trend. All these elements combined together, put the immigrant traders in a strong position to dominate the market at the expense of the local traders. This study concludes by putting forward recommendations that can be implemented to support the local traders to compete effectively against their immigrant counterparts. The recommendations emphasis the importance of selecting and supporting traders who poses a good combination of all the qualities that are necessary for an entrepreneur to succeed, key among these being intrinsic motivation.
- Full Text:
- Date Issued: 2017
- Authors: Mini, Solomzi
- Date: 2017
- Subjects: Informal sector (Economics) -- South Africa -- Soweto Somalis -- South Africa -- Soweto
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/19393 , vital:28867
- Description: Informal retailing is a significant contributor to the South African economy in general and the retail sector specifically. It is a sector that is dominated by immigrant traders, while the numbers of local traders are shrinking by the day. The immigrant traders have outmaneuvered their local counterparts in this market through their ability to put together a compelling value proposition to the customers. Consequently, the focus of this research is to get a better understanding of the basis of their overall competitive advantage. Similar to previous research, this study concludes that the immigrant trader’s competitive advantage has competitive pricing as its foundation. However, this study had gone beyond the existing research which highlights competitive pricing as the reason for this success by suggesting that sound retailing principles which include good customer service, broader product range, hard work and lastly, a low cost business model are major contributors towards this success trend. All these elements combined together, put the immigrant traders in a strong position to dominate the market at the expense of the local traders. This study concludes by putting forward recommendations that can be implemented to support the local traders to compete effectively against their immigrant counterparts. The recommendations emphasis the importance of selecting and supporting traders who poses a good combination of all the qualities that are necessary for an entrepreneur to succeed, key among these being intrinsic motivation.
- Full Text:
- Date Issued: 2017
Key success factors for lean implementation in the Eastern Cape automotive industry
- Authors: Coetzer, Louis
- Date: 2017
- Subjects: Automobile industry and trade -- South Africa -- Eastern Cape , Automobile industry and trade -- Management , Manufacturing industries -- Management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/14928 , vital:27909
- Description: Lean manufacturing has become an integral part of the global automotive industry where manufacturers strive to improve quality, reduce costs while providing customers with more variety. Organisations are implementing the Lean Production System (LPS) as a process improvement methodology to deliver their products faster, better quality and at a lower cost (Laureani & Antony, 2012). This is accomplished through the elimination of waste and continuous improvement (Kaizen). Through the effective implementation of lean principles, an organisation can realise cost competitiveness, process improvement and ultimately gain a competitive advantage. Although the theory of lean manufacturing is based on the implementation of tools, techniques and operational methods, many organisations that have implemented Lean have not reaped its full benefit. Thus, the realisation that lean manufacturing must consist of more than the summation of its operational based principles, tools and techniques. It has to be approached as a philosophy, which encompasses the entire organisation (Womack & Jones, 1996). Lean is a way of thinking and not merely the implementation of thoughts (Bhasin & Burcher, 2006). Laureani & Antony (2012) added that the fundamentals behind Lean are continuous improvement, waste elimination and employee empowerment. Lean introduction is more than the redesign of processes; the most important change must be in the knowledge of the employees (Dombrowski, Mielke & Engel, 2012). The literature clearly states that the successful implementation of a lean production system depends on more than the application of lean tools and techniques. Many authors and researchers hint that another critical factor associated with its implementation is the human aspect of the organisation. Hence, this study will examine the human related Key Success Factors (KSF‟s) required for the successful implementation of a lean system.
- Full Text:
- Date Issued: 2017
- Authors: Coetzer, Louis
- Date: 2017
- Subjects: Automobile industry and trade -- South Africa -- Eastern Cape , Automobile industry and trade -- Management , Manufacturing industries -- Management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/14928 , vital:27909
- Description: Lean manufacturing has become an integral part of the global automotive industry where manufacturers strive to improve quality, reduce costs while providing customers with more variety. Organisations are implementing the Lean Production System (LPS) as a process improvement methodology to deliver their products faster, better quality and at a lower cost (Laureani & Antony, 2012). This is accomplished through the elimination of waste and continuous improvement (Kaizen). Through the effective implementation of lean principles, an organisation can realise cost competitiveness, process improvement and ultimately gain a competitive advantage. Although the theory of lean manufacturing is based on the implementation of tools, techniques and operational methods, many organisations that have implemented Lean have not reaped its full benefit. Thus, the realisation that lean manufacturing must consist of more than the summation of its operational based principles, tools and techniques. It has to be approached as a philosophy, which encompasses the entire organisation (Womack & Jones, 1996). Lean is a way of thinking and not merely the implementation of thoughts (Bhasin & Burcher, 2006). Laureani & Antony (2012) added that the fundamentals behind Lean are continuous improvement, waste elimination and employee empowerment. Lean introduction is more than the redesign of processes; the most important change must be in the knowledge of the employees (Dombrowski, Mielke & Engel, 2012). The literature clearly states that the successful implementation of a lean production system depends on more than the application of lean tools and techniques. Many authors and researchers hint that another critical factor associated with its implementation is the human aspect of the organisation. Hence, this study will examine the human related Key Success Factors (KSF‟s) required for the successful implementation of a lean system.
- Full Text:
- Date Issued: 2017