• Journal of Navigation and Port Research
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• v.35 no.1
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• pp.71-76
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• 2011

Recently, container terminal managers make an experiment on the double cycle and dual cycle operation, which ship loading and unloading were carried out simultaneously, for increasing the productivity of quay side. If, however, we make an experiment on dual cycle operation in a real job site, the efficiency is poor up to terminal operation method as YTs(Yard Tractors)' allocation method, QCs(Quay Cranes)' working speed, and position of export containers. Especially, using the existing yard operation method, it is difficult to support to dual and double cycle operation. Therefore, this paper examine more efficient terminal operation method, when terminal uses dual cycle operation. We developed a simulation model using simulation analysis software, Arena.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.11a
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• pp.170-171
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• 2011

Recently, container terminal managers make an experiment on the double cycle and dual cycle operation, which ship loading and unloading were carried out simultaneously, for increasing the productivity of quay side. If, however, we make an experiment on dual cycle operation in a real job site, the efficiency is poor up to terminal operation method as YTs(Yard Tractors)' allocation method, QCs(Quay Cranes)' working speed, and position of export containers. Especially, using the existing yard operation method, it is difficult to support to dual and double cycle operation. Therefore, this paper examine more efficient terminal operation method, when terminal uses dual cycle operation. We developed a simulation model using simulation analysis software, Arena.

• Journal of the Korea Society for Simulation
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• v.20 no.2
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• pp.49-57
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• 2011

Stiff competition and skyrocketing prices of raw materials are increasingly demanding the optimal design and operation of iron and steel mills minimizing trial and error. Computer simulation can provide the methodology in accordance with requirements. The purpose of this paper is to suggest a simulator for the design and operation of the steelmaking and continuous casting mill. The simulator was developed using Arena, popular simulation software and input and output interface based on MS Excel. It allows easy access for the maintenance and extension of the model. One of distinct features of the proposed simulator is the inclusion of complex transportation modules composed of transfer cars and overhead cranes. The simulator can be used for evaluating various alternative designs of a projected mill via throughput analysis and material flow analysis. Also, one can utilize it effectively to search for the best product mix suitable for many types of situations. It could be an invaluable tool evaluating the performance of operation patterns and improving the accuracy.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.26 no.4
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• pp.56-62
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• 2003

Recently, in order to stay at predominance in the global infinity competition, most of companies have been reducing the cost in many fields of industry First of all, the reduction of the logistics cost have been recognized greatly as the company value rises. But, the current situation of domestic logistics cost is very weak compared with Japan, U.S.A., etc. A rate of logistics cost out of GDP is still high compared with the competitors. The reduction of the transportation cost from overall logistics cost is most urgent subject. One of the methods to make a domestic transportation system efficient is the consolidation. In this paper. we try to compare the consolidated transportation model for a cost reduction with individual case. We also analyze the efficiency of consolidated transportation using simulation program with Arena of System Modeling Company.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.23 no.10
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• pp.687-698
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• 2011

In this study, it was analyzed by a numerical analysis that plan/design considerations for ensuring the spectator safety of large arena audiences in a fire emergency evacuation plan. The latest issue, the 'performance-based design', fire and evacuation plan is important. But nowadays 'Specification-based design' is in common. In evacuation simulation, congestion of exit and aisle is ignored because only evacuation time of large-space is mainly analyzed. In smoke flow,'smoke filling effect' tends to be overrated. From now on, when design a field house, it is needed not 'smoke filling effect' and 'large-space evacuation' analysis, but analyzing 'whole building evacuation time' for ensuring fire evacuation safety of spectator.

• Journal of the Korea Safety Management & Science
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• v.17 no.2
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• pp.191-199
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• 2015

Considering the supply system and operating cost of enterprises which are in the supply chain as the main index, this paper establishes a supply chain evaluation model, and utilizes Arena building stimulation model of the supply chain which considers manufacturing enterprises as the core of supply chain. This model designs a generic simulation model of the supply chain including multi-level distributors and suppliers. And the model analyzes a representative example of business process, one of the enterprises in Shandong.

• Journal of Industrial Technology
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• v.31 no.A
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• pp.3-9
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• 2011

Simulation plays an important role for system analysis. In this study, a manufacturing system has been analyzed through computer simulation. We first briefly explain the considered system with prevailing problems. We then build a simulation model using ARENA simulation language. Based on two selected performance measures, material transporter load and hourly throughput, explicit system analyses have been performed. We addressed four parameters - variation of the processing time, number of raw material transporters, quality failure rate, and machine failures - as the input parameters affecting the output measures selected. We adopted Taguchi's orthogonal array in statistical experimental design and drew meaningful results from the analysis. The results given in the study may provide a good guidance for practical applications.

• Proceedings of the Korea Society for Simulation Conference
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• 1998.03a
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• pp.37-37
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• 1998

현재 정부는 우리나라 물동량 증가에 따른 수도권 항만의 기능 재정립 및 신항만 입지를 선정하기 위한 조사·연구를 진행중이다. 본 연구에서는 현행 인천항의 항만 시스템과 신규항만 시스템에 대한 컴퓨터 시뮬레이션 모형을 개발하여 신항만 개발로 인한 선박대기시간의 감소 및 항만 체류 시간의 감소 등을 예측하였다. 이 결과는 신항만 개발의 경제적 타당성 분석에서 사용자 편익으로 활용될 수 있다. 시뮬레이션 모형은 ARENA를 이용하여 개발하였다. 수도권 항만 즉 인천항에서 처리되는 화물은 양곡을 비롯한 12개 품목이며, 각각의 화물은 5단계의 규모별로 나누어 선박의 도착간격 및 재항시간 분포 등을 1995년 인천항의 실제 자료를 토대로 추정하였다. 선박의 도착간격은 지수 분포로 나타났으며, 서비스시간은 삼각분포(Triangular Distribution)로 근사되었다. 화물량 예측치가 1996, 2001, 2006, 2011, 2020년으로 되어 있고, 이에 따른 신항만 입지 및 규모가 결정됨에 따라 각 연도별로 신항만을 개발할 경우와 개발하지 않은 경우의 각각에 대한 연간 화물별 선박대기 시간 및 재항시간 등을 추정하였다.

• Proceedings of the KIEE Conference
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• 2001.11c
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• pp.319-322
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• 2001

본 논문에서는 고층빌딩의 화재감지/모니터링 시스템에 대한 기준 모델을 제시하고 제시된 모델의 성능을 시뮬레이션을 통하여 검증하였다. 본 논문에서 제시하는 화재감지/모니터링 시스템 모델은 CSMA/CD 방식으로 동작하며 100 Mbps의 전송속도로 동작하는 Fast Ethernet을 백본망으로 사용하고 하부망으로는 MS/TP를 사용한다. 또한 시스템의 확장성과 유연성을 확보하기 위하여 현재 국내 빌딩 자동화 통신망의 표준 프로토콜로 제정된 BACnet을 기반으로 동작한다. 본 논문에서는 제시된 화재감지/모니터링 시스템 모델의 성능을 분석하기 위하여 이산사건 시스템 모델링 전용 툴인 ARENA를 사용한 시뮬레이션 모델을 개발하였다. 개발된 시뮬레이션 모델을 이용하여 네트워크 지연시간이 화재감지/모니터링 시스템의 성능에 미치는 영향을 분석하였으며, 분석된 결과를 바탕으로 본 논문에서 제시한 화재감지/모니터링 시스템 모델이 고층빌딩의 방화 설비 요구사항을 만족시킬 수 있음을 검증하였다.

• Journal of Navigation and Port Research
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• v.33 no.10
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• pp.723-734
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• 2009

Container Vessel is becoming larger and faster thanks to the rapid growth of global trade and development of technology. Therefore, 15,000TEU vessel is expected to be ordered in near future. Every nations in north-east Asia are facing strong competition to be logistics hub to get the initiatives of logistics in response to the rapid change of logistics environment. According to the globalization of economy and major ports in this region also are trying to catch big shipping line for their survival. Considering above circumstances of the advent of ultra-large container vessel and spoke-and-hub strategy, it is inevitably necessary to make a fast and accurate vessel job in the terminal in order to be a leading port To meet this objective, current vessel planning system has to be improved innovatively. Therefore, this thesis propose multi distributed vessel planning system which enables multi loading/discharging planning with several planner simultaneously for faster and more accurate than existing planning and enhances quality of planning through information sharing among planners. Also this thesis uses simulation through Arena to verify the efficiency of this multi-distributed vessel planning system.