Progressive approaches to planning and scheduling of production systems

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To improve the delivery performance of make-to-order companies, introducing make-to-stock policies in upstream stages is investigated. The number of stages with make-to-stock production can be increased progressively by confirming the performance and resolving related issues. Then, the role of production planner is investigated in a two-stage production system. It is assumed that the planner of a stage can realize higher production efficiency. The developed local optimization model is compared with a global optimization model, and it is observed that the local optimization outperforms under the limited capacity condition in the first stage.