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논문 기본 정보

자료유형
학술저널
저자정보
권민석 (국방대학교) 이상진 (국방대학교)
저널정보
한국로지스틱스학회 로지스틱스연구 로지스틱스연구 제30권 제6호
발행연도
2022.12
수록면
105 - 118 (14page)

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초록· 키워드

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The military is taking various efforts to reduce the CWT(Customer Waiting Time). In order to promote the effective supply and guarantee the operational availability of equipment, studies are undertaken to reduce CWT and its variances. The greatest factor on CWT is whether military has an inventory or not. This study focuses on changing effects for selecting ASL(Authorized Stockage Item) related to whether the military has an inventory. Currently, the ASL selection method does not consider cost, demand, and item characteristics, and lacks objectivity due to individual works of the item manager. To overcome these, we propose a new selection method that combines the COSDIF(Cost Differential) model of U.S. military with a Linear Programming model. This study consists of four steps. The first step selects candidate items to be reviewed for COSDIF cost analysis. The second step is to conduct a cost analysis. The third stage is to select an optimal ASL on a Linear Programming model under various constraints such as budget, weight, and volume. In the final step, we compare the existing ASL with the newly selected ASL to verify the effect of CWT using simulations. In addition, we consider top-down and bottom-up method to apply on each scenario. As a result of applying the newly selected ASL, the average and variance of CWT decreased by 14.5∼19.7% compared to the existing method. In addition, the cost can be reduced by 7% to 12%.

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