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- 저자 : 이후언(Huun Lee) (검색결과 4 건)
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이후언(Huun Lee),송권섭(Kwongseop Song),채준재(Junjae Chae),장윤석(Yoonseok Chang),허석호(Suckho Hur),김유승(Yousung Kim) 대한산업공학회 2008 대한산업공학회 추계학술대회논문집 Vol.2008 No.11
항공운송을 이용하는 화물이 증가함에 따라 공항지역에 위치한 보세창고를 이용하는 수입화물도 증가하는 추세이다. 보세창고에서는 증가하는 작업량에 대응하기 위해서 추가적인 비용부담 없이 창고운영효율을 향상시킬 필요가 있다. 본 논문에서는 덕 할당 프로세스를 개선하여 하역장비(지게차)의 작업량을 감소시키고, 입출고작업효율을 향상시키는 방안을 연구하였다. 창고관리시스템의 발전상황을 고려하여 실시간인식시스템 기반의 창고관리 시스템을 가정하고, 덕 할당 문제를 해결하기 위하여 체류시간기반 덕 할당 알고리듬을 개발하였다. 체류시간기반 덕 할당 알고리듬은 화물의 입고 혹은 출고를 위하여 보세창고구역으로 진입한 차량이 작업완료 후 보세창고구역을 빠져나가기까지 소요되는 시간(체류시간)을 산출하고, 체류시간을 최소로 하는 덕 위치를 결정하여, 차량에 할당하는 단계적 방법이다. 체류시간기반 덕 할당 알고리듬의 적용 효과를 검중하기 위하여 시뮬레이션 분석을 실시하였으며, 덕 할당 알고리듬 적용 효과를 명확하게 하기 위하여 덕의 처리능력을 초과하여 화물 차량이 입고되는 환경을 가정하였다. 분석 결과를 통하여 알고리듬 적용이후 지게차의 이동거리, 입 출고작업 효율, 야드대기시간, 창고운영 효율이 향상되는 것을 확인하였다.
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이후언(Huun Lee),박석돈(Seokdon Park),채준재(Junjae Chae),장윤석(Yoonseok Chang),허석호(Suckho Hur),김유승(Yousung Kim) 한국산업경영시스템학회 2009 한국산업경영시스템학회 학술대회 Vol.2009 No.춘계
Traditionally, the vehicles operated in the warehouse are not controlled by central system because the vehicles are normally operated by the separate drivers. However, as Information Technology advances each vehicle can be controlled by central control system directing the order through handheld terminal. In this paper, we study for vehicle efficiency in a bonded warehouse. It includes the traveling distance and utilization of the vehicles in the bonded warehouse. An algorithm for vehicle assignment considering several factors for vehicle operations in the warehouse is proposed. The simulation study has been conducted to check the applicability of the proposed rule for vehicle assignment. We assume busy period through the test in the system to find that the proposed rule works effectively in hard situation.
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항공화물 보세창고의 화물 저장법과 이송 장비 운영의 효율성 개선
송권섭(Kwonseop Song),이후언(Huun Lee),채준재(Junjae Chae) 한국산업경영시스템학회 2009 한국산업경영시스템학회지 Vol.32 No.1
A bonded warehouse is the warehouse located in bonded area. It functions not only as a general warehouse but also as a place for managing the work related to import and export bonded goods. As a general warehouse, it uses the rack system to store the goods and the folk lift truck to move the unitized goods. The operation of the storing system closely related to the efficiency of space uses in a warehouse and vehicle working. Thus, vehicle performance measured in distance units in the warehouse could be used as one of the key performance measure in warehouse system. This paper focuses on the operation efficiency of the bonded warehouse which uses rack system for the storing and the folk lift truck for moving goods. The method of load allocation for balancing the rack uses and vehicle operation for maximizing efficiency are the specific concerns in this paper. The simulation study is conducted to find a policy for efficient vehicle operation based on balanced rack utilization, and the favorable result for the system operation would lead the usable proposal in vehicle operation.
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채준재(Junjae Chae),송권섭(Kwonseop Song),이후언(Huun Lee) 한국산업경영시스템학회 2008 한국산업경영시스템학회 학술대회 Vol.2008 No.하계
A bonded warehouse is the warehouse located in bonded area. It functions not only as a general warehouse but also as a place for managing the work related to import and export bonded goods. As a general warehouse, it uses the rack system to store the goods and the folk lift truck to move the unitized goods. The operation of the storing system closely related to the efficiency of space uses in a warehouse and vehicle working. Thus, vehicle performance measured in distance units in the warehouse could be used as one of the key performance measure in warehouse system. This paper focuses on the operation efficiency of the bonded warehouse which uses rack system for the storing and the folk lift truck for moving goods. The method of load allocation for balancing the rack uses and vehicle operation for maximizing efficiency are the specific concerns in this paper. The simulation study is conducted to find a policy for efficient vehicle operation based on balanced rack utilization, and the favorable result for the system operation would lead the usable proposal in vehicle operation.
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