In supply chain, most partners except the top level suppliers have inbound and outbound logistics. For example, toll manufacturing companies get unprocessed materials from a requesting company and send the processed materials back to the company after toll processing. Accordingly, those companies have inbound and outbound transportation costs in their total logistics costs. For many cases, the company may make the schedule of distributions by considering only the due delivery dates. However, the inbound and outbound transportation costs could significantly affect the total logistics costs. Thus, this paper considers the inbound and outbound transportation costs to find the optimal distribution plans. In addition, we have considered the inventory holding costs as well with transportation costs. From the experimental results, we have provided the optimal strategies for the distributions of replenishment as well as deliveries.

1. 서 론
2. 선행연구
3. 입고 및 출고 수송문제
4. 입고와 출고 수송비용을 고려한 배송시스템 모형
5. 모형적용
    5.1 수요 데이터
6. 결 론
Acknowledgement
References

• 김기태(한밭대학교 산업경영공학과) | Gitae Kim (Department of Industrial Management Engineering, Hanbat National University) Corresponding author