• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2009.06a
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• pp.187-188
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• 2009

초대형 컨테이너선의 출현 이후 각국의 항만들은 메가 허브 포트가 되기 위하여 첨단기술을 컨테이너터미널 업무에 적용하는 등 효율성과 생산성 향상을 위한 노력에 박차를 가하고 있다. 컨테이너터미널에서는 게이트, 야드, 안벽 업무로 나누어져 있으며, 이들 업무간의 효율성 향상을 위해서는 각 업무들 간에 인터페이스가 원활하게 유지되어야 한다. 현재 컨테이너터미널의 야드 업무에서는 외부차량과의 인터페이스를 원활하게 하기 위해서 바코드를 이용한 키오스크 기반 외부트럭 인터페이스를 사용하고 있으나 변화해가는 항만 환경 속에서 좀 더 효율적인 야드 업무 처리를 위해서는 신기술이 적용된 외부트럭 인터페이스가 개발되어야 할 필요가 있다. 본 연구에서는 최근 컨테이너터미널 야드 업무에서 외부트럭과의 인터페이싱 방안으로 활발하게 적용되고 있는 RFID 기반 외부트럭 인터페이스와 기존 사용되고 있는 키오스크 기반 외부트럭 인터페이스를 비교 분석을 통하여 효율성을 평가하고자 한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2009.10a
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• pp.177-178
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• 2009

본 연구는 반입 작업에서 수출 컨테이너의 작업순서 및 장치위치를 결정하는 문제를 다루었다. 수직 배치형 컨테이너 터미널에서 적하작업시간의 단축을 위해서는 가능한 해측에 컨테이너를 장치하는 것이 유리하지만 반입 외부 트럭의 빠른 회전시간의 측면에서는 육측이 선호된다. 이때 수출 컨테이너의 장치위치는 본선작업 우선순위에 따라 가중치가 다르고 이에 소요되는 장치소요시간에 따라 외부트럭들의 대기시간도 달라진다. 따라서 본 연구는 외부 트럭들의 예정 도착시간과 최대대기시간 그리고 적하작업의 선호 장치위치를 동시에 고려한 혼합정수모델을 개발하고 이를 활용한 적용 예를 제시하였다.

• Journal of the Korea Society for Simulation
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• v.28 no.4
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• pp.45-56
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• 2019

Literatures have considered mathematical model that change the job order of shipper for improving the operation time of yard crane. However, on the real site, it is impossible to change the job order decided according to the shipper's arrival order. Therefore, operation managers have been utilized the relatively simple strategy that job control is better but the process time of yard crane is longer due to the growth of yard crane's interference time and empty drive time. This study proposed a new yard-crane scheduling approach that decided the job order before the shipper's truck arrived the yard terminal. We utilize the Container Pre-Information Notice estimating the arrival time of truck. We developed the container terminal simulation model for validation of the effect of proposed scheduling approach. The results show that the proposed scheduling reduced the interference delay time and empty moving time of yard crane and shipper's truck delay time.

• Journal of Navigation and Port Research
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• v.46 no.1
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• pp.33-41
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• 2022

An important operational goal of a container terminal is to maximize the efficiency of the operation of quay cranes (QCs) that load and/or unload containers onto and from vessels. While the maximization of the efficiency of the QC operation requires minimizing the delay of yard tractors (YT) that transport containers between the storage yard and QCs, the delay is often inevitable because of traffic congestion. In this paper, we propose a method for learning a model that predicts traffic speed in a terminal using only YT operation data, even though the YT traffic is mixed with that of external trucks. Without any information on external truck traffic, we could still make a reasonable traffic forecast because the YT operation data contains information on the YT routes in the near future. The results of simulation experiments showed that the model learned by the proposed method could predict traffic speed with significant accuracy.

• Journal of Korea Port Economic Association
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• v.23 no.2
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• pp.121-144
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• 2007

In general, the design of container yard and container handling system on container terminal are focused on operation of shipside than service about chassis from outside(C/O). It is not efficient for chassis from outside. The purpose of this paper is functional assessment of efficient container terminal and for higher performance of container terminal. first, the items which are concerned with container handling at the planning of container terminal are investigated and extracted through the practical data analysis of container terminal. Also, verified problems of planning and present condition through the functional assessment. Secondly, the improvements for container throughput in container yard are proposed and examined the effectiveness of improvements about queuing time of chassis from outside and service time of transfer crane by the evaluation decision model based upon multi criteria objectives.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.05a
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• pp.57-58
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• 2018

As interest in the Internet of Things increases, technologies are being studied to handle information exchanged between things using the Internet of Things. Specially, as container terminals are automated, the use of the Internet of Things in the terminals increases and varies. However, the use of the Internet of Things to enhance the efficiency of the container terminal operation is insufficient. Currently, the container terminal shows that the arrival pattern of the external truck is concentrated at a particular time. This resuls in gate congestion and affects the waiting times of the truck. The damage is caused by environmental pollution problems and social problems in neighboring port areas. Therefore, in this thesis, we will analyze the causes of the external truck's waiting time problems affecting the gate congestion at container terminals and study methods to mitigate congestion under Internet of Things environment.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.05a
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• pp.59-60
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• 2018

Busan New Port has continued to expand its capacity to handle transshipment cargos exceeding 50 percent of its total volume, but it is considered inefficient because of the work scheduling based on the worker experience. In particular, depending on the transshipment task situation, which often requires an external truck, excessive congestion caused by the vehicle's delay can lead to increased logistics costs and social costs. One way to resolve this issue is to minimize the single transport of the truck and to maximize dual-cycle transport by putting the finished truck into another task. Therefore, we would like to study how to efficiently schedule transportation transshipment cargos between terminals considering dual-cycle.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2019.05a
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• pp.109-111
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• 2019

스마트 항만 IoT 인프라 및 정보수집 제공 장치 개발 과제는 항만 IoT 인프라와 정보수집 및 제공 장치 개발을 통해 항만물류자원들의 상호 간 초연결 네트워크를 구축하고, 이를 기반으로 실시간으로 정보를 수집 분석하여 제공함으로써 화물, 사람, 장비, 시설 등을 포함하는 항만 내 모든 자원의 연결성을 90% 이상 확보하고, 더불어 선박, 외부트럭, 교량, 교통 등을 포함한 항만 외 외부자원과의 연결성을 강화하는 것을 목적으로 한다.

• Magazine of the Korea Concrete Institute
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• v.14 no.4
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• pp.40-48
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• 2002

콘크리트는 시멘트의 수화반응으로 시간이 경과하면 굳어지게 되는 물질이다 따라서 레미콘 생산시 기기 및 장비 등에 고착된 콘크리트는 가수 혼합 등으로 분해가 불가능하므로 일단 콘크리트의 제조 및 운반작업이 종료된 후에는 즉시 세척하여야만 한다. 특히 레미콘 생산 현장에서와 같이 대량의 콘크리트를 제조할 경우에 있어, 일단의 콘크리트가 생산완료된 후 레미콘 트럭의 드럼내ㆍ외부 및 배치플랜트의 믹서ㆍ호퍼 등의 세척은 후속콘크리트 제조시 배합비의 정밀을 기하거나, 장비의 보존을 위하여 반드시 필요하게 되는데, 이때 발생하는 세척배수에서 골재를 제거한 것을 회수수라 한다.(중략)

• Journal of Navigation and Port Research
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• v.35 no.8
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• pp.657-665
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• 2011

This study deals with an integrated problem for deciding sequencing and storage location of export containers together at its receiving operation in the container terminal with a perpendicular layout. The preferred storage location of an export container varies with the priority of the corresponding loading operation and the waiting time of an external truck depends on its storage time. This paper proposes the mixed integer programming model considering the expected arrival time and expected finish time of an external truck and the preferred storage location for its loading operation. And we suggest the heuristic algorithm based on a simulated annealing algorithm for real world adaption. We compare the heuristic algorithm with the optimum model in terms of the computation times and total cost and the performance of the heuristic algorithm is analyzed through a numerical experiment.