• Title/Summary/Keyword: Transportation logistics

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Evaluating the Effects of a Landing Charge Discount for Large Aircraft on Congestion Levels at Jeju International Airport

  • In Seok Bae;Jang Hoon Park;Hyo Joong Kim
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.30 no.4
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    • pp.199-206
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    • 2022
  • 제주공항은 슬롯 증대사업을 통한 정시성 개선 노력에도 불구하고 항공 교통량의 확대에 따른 혼잡도의 증가가 지속되고 있다. 제주공항 혼잡도의 근본적인 해소를 위해서 추진되고 있는 신공항 건설이 여러 가지 사유로 지연되고 있으며, 실제 건설계획이 확정되더라도 정상적인 공항 운영까지 상당 기간의 시간이 소요될 것으로 예상된다. 따라서 제주 신공항 건설이라는 대규모 신규 투자와는 별개로 신공항 개항 전, 기존 제주공항을 운영하면서 혼잡도를 해소할 수 있는 중단기적 대안을 마련할 필요가 있다. 이에 국토교통부와 한국공항공사는 제주공항에 소형기보다는 최대이륙중량 100톤 이상의 대형항공기(통상 270석 이상 공급) 투입을 유도하는 착륙료 감면 조치를 시행하였으며, 최초 착륙료 10% 감면에서 추가 활성화를 위하여 착륙료 20% 감면으로 확대하여 운영 중이다. 항공사는 착륙료 감면 비율 상향을 통해 대형기 투입에 따른 실질적인 비용이 절감된다면 상기 정책에 적극 동참하게 될 것이다. 본 논문에서는 제주공항에서 실시 중인 착륙료 감면율 확대 조정이 항공사의 대형기 배정에 미치는 효과를 분석하여 정책의 실효성을 고찰하였으며 이에 따른 개선책을 제시하였다.

A study on the Shipper's Importance and Satisfaction onthe Shipping Service Quality of Air Cargo: Focus on air express and air freight forwarder (화주 기업의 항공 화물 운송 서비스 품질에 관한 중요도-만족도 연구: 항공특송업체와 프레이트 포워더를 중심으로)

  • Go-Eun Hong;Jin-Ho Oh;Keun-Sik Park
    • Korea Trade Review
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    • v.46 no.1
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    • pp.135-154
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    • 2021
  • This study aims to investigate the difference in the perception of shippers on the quality of air freight service between air express and air freight forwarders. This study suggests hypothesis verification and implications on importance-performance between two groups of air express and air freight forwarders. In this study, we find that important variables through paired t-test and importance-performance analysis. As a result of paired t-test, there was a difference in the use variables of the document work variables through computerization in the importance area. In the satisfaction area, there was a difference between the groups in the response to customer request and the response to accidents. The variables that need to improve the focus derived from the importance-performance analysis are document work through computer and response to accidents. It is necessary to observe and manage the response of shippers continuously by holding various transportation schedules in the schedule area, possibility of adjustment of transportation schedule, regular freight and schedule provision.

Effects of Logistics organization practices and Resources Circulation factor on Firm Performance (물류분야에서의 자원순환형시스템 구축 활동요인과 물류조직특성이 물류성과에 미치는 효과)

  • Lim, Jae-Hwa;Park, Seog-Ha
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.30 no.1
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    • pp.48-58
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    • 2007
  • For a sustainable development, the resources circulation system should be established and required alternative logistics area of enterprises. In this paper, we are to suggest a direction through analysis effects, and reduce, recycle, reuse factor of transportation, material handling, packing, information, management in logistics function, and effects of logistics organization on Firm Performance. We found significant correlations between the constructs extracted above, and between the constructs and firm's performance. This study was conducted with the subjects of manufacturing enterprises with concurrent reviews of literature and statistical analysis, and the meaning of this study would be the analysis of the influencers of the resources circulation system.

A Study on the Economic Validity of TSR Connecting TKR (TKR과 연계한 TSR의 경제적 타당성에 관한 연구)

  • Choi, Kyoung-Hoon;Park, Gyei-Kark;Lee, Roman R.;Yoon, Dae-Gwun
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.18 no.4
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    • pp.345-351
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    • 2012
  • The major trade area of the South Korea is divided into Asia, America and Europe. Generally, marine transportation is the main method of mass cargo transportation, but unlike others, rail transportation is available in the Europe area. Also, as a result of China's growth, South Korea's position as northeast Asia logistics hub has weakened. That is the reason why we need to pay attention to rail transportation, an alternative competitive structure. In accordance with this background, this study focuses on analyzing economic feasibility comparing transportation routes to Europe using Trans-Korea Railway and Trans-Siberia Railway. Factors of analysis are transportation distance, period, cost and additional cost As the result, considering economic feasibility, TKR-TSR route(Route1) is the best transportation approach for six routes. Therefore, using TKR-TSR railway will be the best way to increase nation's competitiveness, in response to Russia government's far-east development strategy.

Comparison of Methodologies for Characterizing Pedestrian-Vehicle Collisions (보행자-차량 충돌사고 특성분석 방법론 비교 연구)

  • Choi, Saerona;Jeong, Eunbi;Oh, Cheol
    • Journal of Korean Society of Transportation
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    • v.31 no.6
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    • pp.53-66
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    • 2013
  • The major purpose of this study is to evaluate methodologies to predict the injury severity of pedestrian-vehicle collisions. Methodologies to be evaluated and compared in this study include Binary Logistic Regression(BLR), Ordered Probit Model(OPM), Support Vector Machine(SVM) and Decision Tree(DT) method. Valuable insights into applying methodologies to analyze the characteristics of pedestrian injury severity are derived. For the purpose of identifying causal factors affecting the injury severity, statistical approaches such as BLR and OPM are recommended. On the other hand, to achieve better prediction performance, heuristic approaches such as SVM and DT are recommended. It is expected that the outcome of this study would be useful in developing various countermeasures for enhancing pedestrian safety.

Analysis of Crash Potential by Vehicle Interactions Using Driving Simulations (주행 시뮬레이션을 이용한 차량간 상호작용에 따른 사고발생가능성 분석)

  • Kim, Yunjong;Oh, Cheol;Park, Subin;Choi, Saerona
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.17 no.2
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    • pp.98-112
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    • 2018
  • Intentional aggressive driving (IAD) is a very dangerous driving behavior that threatens to attack the adjacent vehicles. Most existing studies have focused on the independent driving characteristics of attack drivers. However, the identification of interactions between the offender and the victim is necessary for the traffic safety analysis. This study established multi-agent driving simulation environments to systematically analyze vehicle interactions in terms of traffic safety. Time-to-collision (TTC) was adopted to quantify vehicle interactions in terms of traffic safety. In addition, a exponential decay function was further applied to compare the overall pattern of change in crash potentials when IAD events occurred. The outcome of this study would be useful in developing policy-making activities to enhance traffic safety by reducing dangerous driving events including intentional aggressive driving.

Development of an Evaluation Index for Identifying Freeway Traffic Safety Based on Integrating RWIS and VDS Data (기상 및 교통 자료를 이용한 교통류 안전성 판단 지표 개발)

  • Park, Hyunjin;Joo, Shinhye;Oh, Cheol
    • Journal of Korean Society of Transportation
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    • v.32 no.5
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    • pp.441-451
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    • 2014
  • This study proposes a novel performance measure, which is referred to as Hazardous Spacing Index (HSI), to be used for evaluating safety of traffic stream on freeways. The basic principle of the proposed methodology is to investigate whether drivers would have sufficient stopping sight distance (SSD) under limited visibility conditions to eliminate rear-end crash potentials at every time step. Both Road Weather Information Systems (RWIS) and Vehicle Detection Systems (VDS) data were used to derive visibility distance (VD) and SSD, respectively. Moreover, the K-Nearest Neighbors (KNN) method was adopted to predict both VD and SSD in estimating predictive HSIs, which would be used to trigger advanced warning information to encourage safer driving. The outcome of this study is also expected to be used for monitoring freeway traffic stream in terms of safety.

A feasibility study on barge transportation system between Incheon and Gaesung (인천-개성(공단)간 바아지 항로의 타당성 조사)

  • Lee, Seung-Hee;Lee, Young-Gill;Choi, Jeong-Chul;Kim, Sang-Hyun
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • v.1
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    • pp.283-291
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    • 2006
  • Recently, a logistics between south and north Korea is rising rapidly by increasing of economical exchange between two Korea and growth of Gaeseoung Industrial Complex. Considering this trend of economic cooperation between two Korea, in addition to a land transportation route it is necessary to secure various logistics and transportation route. A barge transport system which has merits such as a little initial investment and convenience of harbor loading/unloading has been also used to transport freight widely in the EU and USA. In this paper, firstly, a social and economical feasibility study is performed about a shipping route which is using barge transportation system between Incheon and Gaesung. And also we propose several candidate shipping route and investigate a technical feasibility on a realistic possibility of shipping service by some investigation activities. Finally, the optimized shipping route and barge transportation system are proposed in this paper.

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An Evaluation of Constitutional Factors of Logistics System under the Consideration of Environmental Changes (환경변화를 고려한 우리나라 물류시스템 분석요소 평가)

  • Yeo, Gi-Tae
    • Journal of Korea Port Economic Association
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    • v.25 no.2
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    • pp.95-114
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    • 2009
  • The aim of this paper is to evaluate weight and priority values for 'inner consisted factors' and 'outer requested factors' of logistics system using the AHP(Analytic Hierarchicy Process) method. As for analysis regarding inner consisted factors, the results were shown as follows: a road transportation (0.312) as first rank; a marine transportation (0.269) as second rank; a railway transportation (0.239) as third rank; an air transportation (0.118) as fourth rank, and a pipeline transportation (0.063) as fifth rank. In terms of analysis regarding outer requested factors, the results were came out as follows: an infrastructure (0.322) as first rank; a performance (0.206) as second rank; an information system (0.151) as third rank; a human resources (0.121) as fourth rank, a business environment (0.075) as fifth rank; a connectivity (0.073) as sixth rank, and a political environment (0.052) as seventh rank.

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