| Summary: | 碩士 === 國立臺灣科技大學 === 工業管理系 === 96 === Because of the characteristics of TFT-LCD industry, the cost of labor for LCM plants is lower in some countries outside Taiwan. It is forced to consider multi-points/multi-plants international logistics system for materials planning and schedule of transportation. The key issue is to control the accuracy and economy of materials transportation system. This research develops a sequential approach to the material planning of multi-site TFT-LCD module plants. First, the best transport pattern was created by ship schedule planning system. Then the optimal transportation plan was derived based on the transport pattern.
Two ship planning models were created in this research. The goal of the first model is to minimize the stocking time of total inventory. Whereas the goal of the second model is to minimize transportation costs and inventory costs. The system was valid by case company and found out that the proposed system can really improve the original planning effectively, especially for the ship schedule is shorter than the general planning method with the need to transport ahead of time for in time delivery. Various inventory costs and transportation costs for different transport models provide criteria for selecting from first model and second model.
The objective function of transportation planning is to minimize transportation costs for materials form LCD plants to the warehouse of distribution centers, from DCs to the warehouse of LCM plants. The model was solved by linear programming, and then the planning system will provide a solution for the case company with global logistics for materials planning.
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