M. Tech. (Department of Logistics, Faculty of Management Sciences), Vaal University of Technology. / The purpose of this study was to investigate the relationship between supplier selection practices, supplier risk management, supplier commitment and procurement performance in the public health industry in Gauteng province. Many studies have been conducted on the specific subject of procurement performance within the public health care sector. However, there is very little evidence that any such studies have been carried out that have precisely been narrowed down to the specific subject of the dimensional relationships and linkages between Supplier selection, supplier risk management, supplier commitment and procurement performance in the public health industry in South Africa. This study, therefore, was conducted to fill this gap. To measure the study constructs, the survey material was designed in the form of a structured questionnaire. Participants were asked to complete four test instruments namely: supplier selection questionnaire, supplier risk management questionnaire, supplier commitment and procurement performance questionnaire. A total number of 200 questionnaires was distributed to the identified sample of public health industries of which 187 responded and finally, 150 questionnaires were usable and used for data analysis. The collected quantitative data were analysed using the SMART-partial least squares (SMART-PLS 3) structural equation modelling procedure. The actual data analysis techniques applied included descriptive statistics and inferential statistics using structural equation modelling. Also, the latter used a SMART-PLS 3 to test the psychometric properties of measurement scales and the testing of the six hypotheses using the path analyses technique. The results of the study showed positive and significant relationships amongst all variables except for one. Specifically, supplier selection and supplier risk management exerted a moderate and significant influence on supplier commitment. Moreover, supplier commitment had a strong positive and significant relationship with procurement performance while supplier risk management had a weak and insignificant relationship with the same factor. More results provided from the analysis confirmed the existence of a very strong and significant relationship between supplier selection and procurement performance. Besides, the study takes note of its contributions to highlighting its merits. From a theoretical perspective, it provides an in-depth examination of some driving factors to supplier selection, supplier risk management, supplier commitment and procurement performance within Public health entities. Given that a study of this nature has not been performed before amongst South African public health care sectors, the results are an essential addition to the existing body of literature within the area of procurement performance within public health industries in developing countries such as South Africa. The study concludes by suggesting recommendations for limiting the impact of the identified challenges on procurement performance.

M. Tech. (Department of Logistics Management, Faculty of Management Sciences), Vaal University of Technology. / Economic growth, job creation and improved standard of living have resulted to focus mostly on small and medium enterprises (SMEs) across the world. Hence, establishing and maintaining relationships with partners across the supply chain has become a prerequisite for achieving long-term competitive benefits in the present business competitive environment. For this reason, buyer-supplier commitment is deemed an important long-term business relationship strategy towards achieving competitive performance. Although buyer-supplier commitments can serve as the basis for the development of relational standards, unbalanced commitments, on the other hand, may become a harbinger of opportunistic behaviours. This development is inimical to continued business relationship and its consequential benefits for the SMEs’ supply chain collaborators. Guided by the theoretical lens of the social exchange theory (SET), this study examines the influence of communication, product quality, flexibility, and buyer-supplier commitments on SMEs competitive performance in southern Gauteng. Using a convenience sampling technique, the study quantitatively analysed the 396 returned questionnaires. Data analysis was conducted using the statistical package for social sciences (SPSS) version 25.0 and AMOS 25.0 for the confirmatory factor analysis and the structural equation modelling (SEM) respectively. The SEM analysis helped to confirm the suitability of the model fit as well as the positive and significant relationships of the proposed hypotheses. The analysis revealed that communication, product quality and flexibility are important variables in predicting buyer-supplier commitment as they displayed positive association with buyer-supplier commitment and the latter is significant in a firm’s effort towards achieving competitive performance. The study recommends the anchoring of SMEs strategies on commitment inorder for partners to efficiently and effectively enjoy competitive benefits. This research contributes new knowledge to the body of literature by developing a research framework on SME’s business growth and competitive performance and offered recommendations based on the study, which if implemented, could improve the economy. The study also revealed a higher relationship among the baseline constructs (communication, product quality and flexibility) which have received little or no conceptualisation in literature.

M. Tech. (Department of Logistics Management, Faculty of Management Sciences), Vaal University of Technology. / The food retail industry is an important contributor to the economy. Buyers and suppliers in this industry work in collaboration with each other to achieve superior supply chain performance. To achieve this, they have to find ways and methods to improve it. The purpose of this study was to investigate the drivers of supply chain performance in the food retail industry in the Gauteng province. This study considers three of these drivers, namely buyer-supplier trust, buyer-supplier commitment and supply chain relationship longevity. A quantitative approach was adopted in which a survey questionnaire was used to collect data from 429 managers and staff members from food retailing firms in the Gauteng province. The study used a non-probability convenience sampling technique to select respondents. Data were analysed with the aid of two software packages, namely the Statistical Package for the Social Sciences (SPSS version 24.0) and the Analysis of Moment Structures (AMOS version 24.0). A confirmatory factor analysis was applied in examining and testing the relationships between observed constructs and their causal latent constructs while structural equation modelling was used to test the hypothesised relationships between constructs. The results of the research revealed that buyer-supplier trust, buyer-supplier commitment and supply chain relationship longevity positively and significantly influence supply chain performance. Buyer-supplier trust exerted a positive and significant influence on both buyersupplier commitment and relationship longevity. Also, the results showed that buyer-supplier commitment has a positive and significant influence on relationship longevity. The study concludes that to achieve greater supply chain performance, food retailers should expedite the levels of trust, commitment and length of relationships with their suppliers. The results of this study provide useful insights on how businesses in the food retail industry could benefit from trust, commitment and relationship longevity as well as on how to improve supply chain performance. The results of this study contribute to the existing body of knowledge by generating new information on buyer-supplier relationships. Therefore, the study is useful to buyers and suppliers in the food retail industry who wish to enhance supply chain performance and develop better relationships.