시스템 다이내믹스 모형을 통한 공급능력 확장과 반품정책에 대한 연구
A Study on the Capacity Augmentation and Return Policy in a Supply Chain-Applying a System Dynamics Model
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초록
본 연구는 공급능력제약이 존재하는 2단계 공급체인에서 분권화된 공급체인 조정메커니즘인 반품계약의 이용이 공급능력 확장 의사결정에 미치는 영향을 분석하였다. 구체적으로 본 연구는 공급자와 구매자간의 반품계약이 존재하지 않았을 때의 공급자의 공급능력 확장 의사결정의 결과와 반품계약이 존재하는 경우의 의사결정의 결과를 시스템 다이내믹스 모형의 구축을 통해 비교하고자 하였다. 비교분석을 위해, 총비용과 충족률을 공급체인 성과변수로 공급능력 갭과 초과공급능력을 공급능력 확장의 적정성 성과변수로 사용하였다. 연구결과, 반품계약의 이용은 공급체인 공급능력 확장의사결정에 유의한 영향을 미치는 것으로 나타났다. 이는 반품계약이 공급자의 공급능력을 적기에 확장하도록 지원함으로서 분권화된 공급체인내의 수요와 공급의 균형을 지원하는 전략적 도구로 사용될 수 있음을 시사한다.
Abstract
The purpose of this study is to analyze the effect of the use of return policy on the supplier's decision on the capacity augmentation under the two-echelon supply chain considering the constraints of supply capacity. Specifically, this study, based on the system dynamics model, aims to compare the results of performances of the supply chain with a return policy with that of the supply chain without a return policy. We consider the total cost, the fill rate as supply chain performance and capacity gap and extra capacity as suitability of capacity augmentation. The simulation results show that the use of return policy significantly affect the supplier's capacity augmentation. This result implicates that the return policy helps timely expansion of supplier's capacity, so it can be used as a strategic tool for assisting the balance between supply and demand in the supply chain.
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