재고수준을 고려한 제철원료 수송을 위한 선박 일정계획 수립 모형 = A Ship Scheduling Model for Raw Material Transportation with Yard Storage Constraints in a Steel Mill

다국어 초록 (Multilingual Abstract)

A ship scheduling model is presented for the raw material transportation problem with yard storage constraints in a steel mill. The problem is formulated as 0, 1 mixed integer programming considering such constraints as loading port conditions, ship size and hold capacity, unloading conditions, and yard storage space. In addition, inventory related constraints including safety stock are taken into consideration to support the continuous operations of steel making process The proposed model has been implemented and applied successfully to a real world problem, and its results show the improvement of performance compared to the traditional method. For example, the arrival dates of ships are determined satisfying the constraints. The total inventory level is minimized at the stock yard as a result. Also. the safety inventory level is always kept at the planning stage. and the standard deviation of total inventory level is reduced significantly. Further research is expected to develop efficient heuristics to have a better response time for even larger scale problems.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 기존 연구 고찰
• 3. 선박 일정계획 수립 모형
• 4. 사례 및 모형 적용 결과
• 5. 결론 및 추후 연구방향
• 참고문헌
• 저자소개

참고문헌 (Reference)

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6 Matthews, A, "Future iron- and steelmaking together with upstream marketable products" 33 (33): 367-371, 2006

7 Christiansen, M, "Decomposition of a combined inventory and time constrained ship routing problem" 33 (33): 3-16, 1999

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10 Christiansen, M, "A method for solving ship routing problems with inventory constraints" 81 : 357-378, 1998

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