Thesis (Ph. D.)--University of Wisconsin--Madison, 1972. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2007. / Includes bibliographical references (leaves 103-106). Also available in electronic version.

Transwerk is a business uint of Transnet. It was established in 1940. Since 1940 unti 1994, Transwerk operated as the engineering section of Spoornet and was known as South African Railways. Transwerk emancipated in 1994 and had plants in all nine provinces of South Africa. In the past, trains were hauled by steam locomatives, which were manually operated. With the improvement of technology, steam locomotives were replaced by diesel locomotives. The recent technology improvement brought about electric locomotives which are more reliable than diesel locomotives.Trnaswerk has a plant in the Eastern Cape Province which is situated in Uitenhage. This plant focuses on refurbishing wagins for Spoornet. This research is about improving the refurbishing processes of Transwerk Uitenhage.

The author develops a mathematically rigorous and concise formulation of a general, multistage input-output model for complex production systems, by integrating various useful concepts, developed in different disciplines. This model was designed to serve equally well for production planning, cost measurement and allocation purposes. After the objective, scope and methodology are set forth, the concepts of linking the stages of a production system and reducing the multistage model into different equivalent formats are demonstrated. Then the concepts of jumping inputs, internal flows and feedbacks are introduced into the model, to account for characteristics of more complex production systems. All previously discussed concepts are then integrated into a single, generalized input-output model. It is shown, how the physical model may be used to calculate the total costs of alternative production programs, how standard costs can be derived and how dollar-coefficient matrices may be used. Some of the existing literature is then integrated and evaluated within this new framework. Finally a summary is complemented by a list of areas that seem to deserve further research. / Business, Sauder School of / Graduate

This study examines the impact of workforce level restriction on the aggregate production planning problem. Based on the results of this study, it is concluded that the solution to the aggregate production problem appears to be the same regardless of workforce level restriction. Additional research utilizing multi-industry large-scale data is needed to test the applicability of findings derived from the current study.

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Thesis (M.Phil.)--City University of Hong Kong, 2009. / "Submitted to Department of Management Sciences in partial fulfillment of the requirements for the degree of Master of Philosophy." Includes bibliographical references (leaves 125-133)

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