• 한국항해항만학회지
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• 제27권1호
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• pp.31-40
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• 2003

현재 컨테이너 터미널의 계획자들은 장치장 모니터링(Yard Monitoring)과 수출입 장치장 계획을 분리된 시스템 환경으로 하여 계획을 수립하고 있다. 이로 인하여 수출 장치장 계획을 할 때 실시간으로 컨테이너 장치 현황을 정확히 반영하여 계획을 수립하지 못하고 있는 실정이며 부산의 각 터미널의 많은 계획자들이 기존 수출입 장치장 계획 시스템의 한계를 인식하고 있으며 해결 방안을 찾고자 하고 있다. 따라서, 본 연구에서는 장치장 모니터링 시스템과 수출입 장치장 계획 시스템을 통합하여 실시간 컨테이너의 흐름에 따른 수출입 장치장 계획 시스템을 디자인하고 계획에 적합한 효율적인 의사결정 지원 모형을 제시한다 또한 이러한 해법을 검증하고 실제 업무에 적용하기 위한 시스템을 설계하고 개발하고자 한다.

• 대한산업공학회지
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• 제35권1호
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• pp.58-72
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• 2009

The main activities of container terminals are to load container freights to vessels, discharge them from vessels, and store them in the storage yard. Container terminals make many operational plans to execute these functions effectively. If the plans do not consider enough the loads of related resources, they may have low actualities. This study discusses the optimal yard planning model which considers various resources, such as the storage yard, yard cranes, internal vehicles, and travel lanes, in container terminals. The model determines the groups and amounts of containers which are stored in each storage block by using the resource profile. The yard planning problem is represented to the multi-commodity minimal cost flow problem and is formulated to the linear programming model. In order to explain the application of the mathematical model, the numerical examples are presented. Additionally, the relationship between the average load ratio and the relocation ratio is discussed.

• 한국항해항만학회지
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• 제31권2호
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• pp.141-149
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• 2007

The competitiveness of container terminals hinges on minimizing the time vessels spend in port and on schedule services. Many previous researches on container terminals have tried to optimize the equipment allocation plan and to improve the activity of resources. Nevertheless, there have been few researches conducted on yard tractors, which move containers between the quay and the yard. The aim of this study is to propose the use of Real Time Location Systems (RTLS) based Dynamic Planning for yard tractors. Only RFID (Radio Frequency Identification) tags, which are attached to yard tractors, are able to support RTLS implementation. The system can provide real time job ordering in terms of load balancing using the information on location, in regards to the movement of yard tractors. This study will present the practical feasibility of RTLS, which can ultimately reduce the congestion of Hot Queues in container terminals. As a result, container terminals can be more productive and competitive. In order to accomplish the purpose of this study, we examined previous studies on the competitiveness of container terminals and summarized the potential of RTLS using RFID. In addition, we identified the role of yard tractors and proposed the two rules of Dynamic Planning for the yard tractors. We then fulfilled computational experiments on how yard tractors carrying containers by RTLS ordering Finally, the benefits and the implications of this study are discussed.

• 정보처리학회논문지B
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• 제11B권1호
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• pp.63-70
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• 2004

항만 운영은 크게 게이트부문, 야드 부문, 선석 부문으로 구분되며, 이들 부문에 대한 운영전략과 효율적인 자원할당이 항만의 생산성향상에 중요한 역할을 한다. 특히, 선석 부문에서의 자원할당 계획은 선석 계획으로서 선박의 작업시간과 직결되기 때문에 최적화를 필요로 한다. 선석 계획은 독립적인 자원할당이 아니라 야드 부문의 장치 공간 할당과 상호 관련성을 가지고 있다. 따라서 기존 연구들이 선석 계획에 대해 독립적인 자원할당을 연구한 것과 달리 야드의 장치 공간 할당과 상호 관련성에 중점을 두고 선석 계획의 최적화 모듈을 설계하였다. 선석 계획 최적화 모듈의 설계는 수리적 기법으로 표현된 기존의 제약조건에 야드의 장치공간 할당과 관련된 제약조건을 제안하여, 해를 탐색하고, 찾은 해를 최적화하는데, 타부탐색을 사용하여 선석 계획 최적화 모듈을 설계하였다. 그리고 선석 계획 최적화 모듈의 성능 실험에서는 야드의 장치공간 할당계획을 적용한 선석 계획이 그렇지 않은 경우에 비해 작업시간이 단축됨을 알 수 있었다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2004년도 춘계학술대회 논문집
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• pp.167-172
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• 2004

컨테이너 운송에 있어서 해상운송은 가장 큰 부분을 담당하고 있다. 컨테이너 터미널의 관점에서 볼 때는 선박의 안정성을 확보하고, 선박의 정시성을 확보하기 위해서는 컨테이너 터미널의 장치장에서의 Planning 기술이 매우 중요하다. 본 연구의 목적은 컨테이너를 Reference로 관리하는 방식과 컨테이너를 Time으로 관리하는 방안으로 Gate로 반입되는 컨테이너를 예측하여 일일 필요한 장치장을 할당하는 방식간의 장치장 점유율 관계를 평가하여 보다 효율적인 장치장 관리에 대한 방안을 개념적으로 제시하는데 있다.

• 경영과학
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• 제12권3호
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• pp.1-15
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• 1995

The Pusan Container Terminal faces a rapid increase in berthing time of container ships as well as in waiting time of external trucks, which is due to an absolute lack of yard space. This research is focused on the development of a decision support system for the planning of the container terminal yard assignment so that the yard space would be utilized most effectively. Efforts should be given to the reasonable assignment of the yard storage and the dynamic adaptation to the ever changing environment. The software introduced here is based on the know-how of the field exports and its framework takes the approach of the hierarchical decision making.

• Industrial Engineering and Management Systems
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• 제11권1호
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• pp.103-113
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• 2012

A yard in a container terminal is a temporary storage space before containers are loaded onto the target vessel or delivered to consignees. For improving the utilization of the space in the yard and the efficiency of loading and discharging operations, it is important that operation plans must be carefully constructed in advance. A heuristic method is suggested to solve operation space planning problems considering workloads on handling equipment as well as space availabilities. The operation plans in this paper includes quay crane (QC) schedules and space plans for multiple vessels considering the workload in the container yard of container terminals. This paper evaluates the effectiveness of a space planning method and the performance of a new QC scheduling method using a simulation model.

• 유통과학연구
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• 제11권5호
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• pp.33-41
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• 2013

Purpose - Yard inventories increase when export containers are carried into the terminal and decrease when import containers are delivered to the consigners. The purpose of this study is to analyze container inventories according to the weekly ship arrival pattern at container terminals. Research design, data, and methodology - As container ships operate according to weekly schedules based on shipping companies and their routes, specific terminals provide a fixed-day service in a week. Thus, yard inventories can change with weekly fluctuations. The data used in this study were the actualdata at specific container terminals. Result - The dwell times of each container at a terminal represent an important variable that affectsyard inventories. Even cargo flows are steady in a given period, if dwell times are prolonged, yard inventories increase. Conclusion - Dwell time is another factor causing yard inventory change. Therefore, the calculation for yard inventories should consider the weekly ship arrival patterns and dwell times of each container. Further, at the planning stage, dwell time should be more carefully considered to calculate yard capacity.

• 산업공학
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• 제11권1호
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• pp.105-117
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• 1998

A decision support system is introduced for the efficient operation of port container terminals. It consists of ship planning subsystem, yard planning subsystem, resource management subsystem, real-time control subsystem, and simulation subsystem. The system is intended to support the planning process of the planners and the operation process of the administrators in the container terminals. It is assumed that the transfer cranes and the yard tractor/trailers are used to handle containers in the marshaling yard. The system is explained in terms of the functions of each subsystem and the data flows among various subsystems.

• 대한산업공학회지
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• 제37권3호
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• pp.198-208
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• 2011

At a shipyard, the efficient handling of blocks is one of the most important factors in the shipbuilding process. We consider the problem of deployment planning of blocks from storage yards. As some information of block arrangement should be considered to handle the problem, we adopt the block arrangement based on the coordinates and sizes of each block at a storage yard. Deployment planning for a block involves deciding upon its transportation route from the storage yard and searching for blocks that would obstruct its transportation along this route. A tabu search algorithm for deploying several blocks is developed to minimize the number of obstructive blocks deployed together from the storage yards at a shipyard. The results of computational experiments show that the developed algorithm is very useful in the deployment planning of multiple blocks from the storage yards.