• Title, Summary, Keyword: container

Search Result 3,787, Processing Time 0.04 seconds

A Simulation Study on Efficiency of Container Crane in Container Terminal (컨테이너 터미널에서 컨테이너 크레인의 하역능력 추정에 관한 시뮬레이션 연구)

  • Yun, Won-Young;Choi, Yong-Seok;Song, Jin-Young;Yang, Chang-Ho
    • IE interfaces
    • /
    • v.14 no.1
    • /
    • pp.67-78
    • /
    • 2001
  • This paper describes the simulation study which estimates the container crane efficiency in container terminal. In most simulation studies, it is assumed that container cranes are available at any time. Though the failures of container cranes don't occur often, they are very serious problems on terminal efficiency. As usual, the failures of container crane cause arrived ships to delay the departure time. In this study, a queueing simulation model for container terminal, which focuses on the failures of container cranes, is designed. The simulation approach appears to be the most appropriate one because it allows to avoid the usual exponential assumption on interarrivals of ships and service times of container cranes. Using the developed model, we tested the efficiency of container cranes considering failures with a real system size and performed the simulation experiment on real container terminal to validate the developed simulation model. The results of simulation experiment were analyzed using output statistics, which include the waiting times of vessels and yard tractors, the utilization for container cranes, and the berth occupancy rates.

  • PDF

A Truck Dispatching Problem in the Inland Container Transportation with Empty Container (공 컨테이너를 고려한 컨테이너 내륙수송에서의 차량배차문제)

  • 윤원영;안창근;최용석
    • Journal of the Korean Operations Research and Management Science Society
    • /
    • v.24 no.4
    • /
    • pp.63-80
    • /
    • 1999
  • In the container transportation of inland depots the empty container is an important issue. The truck dispatching problem in this paper is considered under restriction about empty containers. When a full container arrives in a depot by truck, after unloading operation the full container is changed to an empty container. After loading operation an empty container is changed to a full container. We suggest an integrated approach to the problem of simultaneously managing empty truck and container movements. We suggest an integrated approach to the problem of simultaneously managing empty truck and container movements. We would like to find the truck dispatching method minimizing empty truck movements and empty container movements. In this paper, a mixed integer programming model is developed to obtain the optimal truck dispatching in container transportation and heuristic is developed to give a good solution in much shorter time. The numerical examples are studied and the proposed heuristic is also compared with the result of numerical examples.

  • PDF

Globalization and Consolidation in Maritime Transport and Its Implications for Container Port Business

  • Ryoo Dong-Keun
    • Journal of Navigation and Port Research
    • /
    • v.29 no.9
    • /
    • pp.801-806
    • /
    • 2005
  • The world of container shipping and container terminal business is changing and container ports need to know what the changes are in order to plan how to respond. In particular, the container transport industry has noticed two major developments such as globalization and consolidation. The purpose of this paper is to review the current trend towards globalization and consolidation of container liner shipping and container terminal business. It also investigates the impact of these market developments on container ports and presents its implications for port development, management and operation, and port competition policy. According to the discussion of this paper a greater exercise of market power of container terminal operators will have negative impacts on international trade and national economy, especially port users, including container lines, exporters and importers. An empirical evidence on the exercise of market power is required to develop competition rules on market dominance at a national and international level. This paper suggests 'port coopetition' as a solution for smaller and regional container terminal operators to survive in a competitive business environment.

Implementation of Dual Cycle in Container Yard based on Ad-hoc Networks (Ad-hoc 네트워크 기반의 컨테이너장치장의 Dual Cycle 구현)

  • Park, Doo-Jin
    • Journal of Fisheries and Marine Sciences Education
    • /
    • v.25 no.4
    • /
    • pp.998-1007
    • /
    • 2013
  • At container terminals, a major measurement of productivity can be work efficiency. For improving the productivity of container crane, the more efficient container yard operation method is necessary in container terminals. Recently, container terminal operators make an experiment on the dual cycle operation, which ship loading/unloading were carried out simultaneously, for increasing the productivity of container crane. In this paper, propose a system operating efficient dual cycle methods as utilize Ad-hoc technology in distributed port operation system. The dual cycle methods that proposed recognizes position information of Y/T during an action in Ad-hoc networks in case of container transfer works by real time as load an Ad-hoc module to Y/T taking charge of a container transfer with quay and yard. Utilize Ad-hoc networks technology in an operating system of container yard, and efficiently distributed processing done Y/T to container crane compare with operation systems of the existing dedicated method, and an improvement can do an operating system of an yard.

Recognition of Identifiers from Shipping Container Image by Using Fuzzy Binarization and ART2-based RBF Network

  • Kim, Kwang-Baek
    • Journal of Intelligence and Information Systems
    • /
    • v.9 no.2
    • /
    • pp.1-18
    • /
    • 2003
  • The automatic recognition of transport containers using image processing is very hard because of the irregular size and position of identifiers, diverse colors of background and identifiers, and the impaired shapes of identifiers caused by container damages and the bent surface of container, etc. We proposed and evaluated the novel recognition algorithm of container identifiers that overcomes effectively the hardness and recognizes identifiers from container images captured in the various environments. The proposed algorithm, first, extracts the area including only all identifiers from container images by using CANNY masking and bi-directional histogram method. The extracted identifier area is binarized by the fuzzy binarization method newly proposed in this paper and by applying contour tracking method to the binarized area, container identifiers which are targets of recognition are extracted. We proposed and applied the ART2-based RBF network for recognition of container identifiers. The results of experiment for performance evaluation on the real container images showed that the proposed algorithm has more improved performance in the extraction and recognition of container identifiers than the previous algorithms.

  • PDF

Recognition of Identifiers from Shipping Container Image by Using Fuzzy Binarization and ART2-based RBF Network

  • Kim, Kwang-baek;Kim, Young-ju
    • Proceedings of the KAIS Fall Conference
    • /
    • /
    • pp.88-95
    • /
    • 2003
  • The automatic recognition of transport containers using image processing is very hard because of the irregular size and position of identifiers, diverse colors of background and identifiers, and the impaired shapes of identifiers caused by container damages and the bent surface of container, etc. We proposed and evaluated the novel recognition algorithm of container identifiers that overcomes effectively the hardness and recognizes identifiers from container images captured in the various environments. The proposed algorithm, first, extracts the area including only all identifiers from container images by using CANNY masking and bi-directional histogram method. The extracted identifier area is binarized by the fuzzy binarization method newly proposed in this paper and by applying contour tracking method to the binarized area, container identifiers which are targets of recognition are extracted. We proposed and applied the ART2-based RBF network for recognition of container identifiers. The results of experiment for performance evaluation on the real container images showed that the proposed algorithm has more improved performance in the extraction and recognition of container identifiers than the previous algorithms.

  • PDF

Evaluation Models for the Container Handling Times of the Automated Transfer Crane in Container Terminals (컨테이너 터미널에서 자동화된 트랜스퍼 크레인의 컨테이너 취급시간을 위한 평가모형)

  • Kim, Ki-Young
    • IE interfaces
    • /
    • v.19 no.3
    • /
    • pp.214-224
    • /
    • 2006
  • The container handling times of automated transfer cranes(ATCs) significantly affect the productivity of container terminals. In this paper, evaluation models for the container handling times of ATCs are suggested for import container blocks with different transfer point configurations. Firstly, evaluation models for various motion times of stacking and retrieving operations of ATC are suggested for two basic alternatives of import container blocks. In addition, in considering the space allocation, evaluation methods for the container handling times of ATC are suggested. Finally, the container handling times for each case are compared with each other in order to analyze how the block shape and the transfer point locations affect the container handling times of ATC.

An Intelligent System for Recognition of Identifiers from Shipping Container Images using Fuzzy Binarization and Enhanced Hybrid Network

  • Kim, Kwang-Baek
    • Journal of Korean Institute of Intelligent Systems
    • /
    • v.14 no.3
    • /
    • pp.349-356
    • /
    • 2004
  • The automatic recognition of transport containers using image processing is very hard because of the irregular size and position of identifiers, diverse colors of background and identifiers, and the impaired shapes of identifiers caused by container damages and the bent surface of container, etc. In this paper we propose and evaluate a novel recognition algorithm for container identifiers that effectively overcomes these difficulties and recognizes identifiers from container images captured in various environments. The proposed algorithm, first, extracts the area containing only the identifiers from container images by using CANNY masking and bi-directional histogram method. The extracted identifier area is binarized by the fuzzy binarization method newly proposed in this paper. Then a contour tracking method is applied to the binarized area in order to extract the container identifiers which are the target for recognition. In this paper we also propose and apply a novel ART2-based hybrid network for recognition of container identifiers. The results of experiment for performance evaluation on the real container images showed that the proposed algorithm performs better for extraction and recognition of container identifiers compared to conventional algorithms.

An Object-Oriented Simulator for Port Container Terminal (컨테이너터미널용 객체지향 시뮬레이터)

  • 최용석
    • Proceedings of the Korea Society for Simulation Conference
    • /
    • /
    • pp.19-25
    • /
    • 2003
  • Since container throughput is continually increasing, the main issues facing decision-makers at port container terminals are how to expand the existing container terminals and construct new container terminals. Simulations that support user needs require modeling tools that are both easy to use and sufficiently to reflect real world system. The object-oriented approach provides for both reusability and modularity that best fits these requirements. This paper present the design procedure a simulator for port container terminal that was based on the object-oriented approach. The simulator in order to model and simulate the TC-based container terminals is developed.

  • PDF

Empty Container Distribution and reassignment problem due to demand of freight depot (국내 화물 거점별 수요에 따른 공컨테이너 분배 및 재배치 연구)

  • Park, Jong-Won;Shin, Jae-Young
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • /
    • pp.185-186
    • /
    • 2009
  • According to increase of container transportation, demands of empty container handling has been increasing, so research of empty container has been studied steadily. However, the handling of containers and empty containers is not handled simultaneously. Moreover, as Korean ICD(Inland Container Depot) and ODCY(Off-Dock Container Yard), the inland depot in many environments, relocation research due to demand of empty container has not been studied sufficiently. This paper formulates and analyzes logical mathematical relocation model according to demands of empty container which are required in container terminal, ICD, and ODCY as cargo depots. This paper also aims to help reduce cost by improving q current empty container relocation as same as the past procedure.

  • PDF