• 제목/요약/키워드: airports

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Predictability Experiments of Fog and Visibility in Local Airports over Korea using the WRF Model

  • Bang, Cheol-Han;Lee, Ji-Woo;Hong, Song-You
    • Journal of Korean Society for Atmospheric Environment
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    • 제24권E2호
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    • pp.92-101
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    • 2008
  • The objective of this study is to evaluate and improve the capability of the Weather Research and Forecasting (WRF) model in simulating fog and visibility in local airports over Korea. The WRF model system is statistically evaluated for the 48-fog cases over Korea from 2003 to 2006. Based on the 4-yr evaluations, attempts are made to improve the simulation skill of fog and visibility over Korea by revising the statistical coefficients in the visibility algorithms of the WRF model. A comparison of four existing visibility algorithms in the WRF model shows that uncertainties in the visibility algorithms include additional degree of freedom in accuracy of numerical fog forecasts over Korea. A revised statistical algorithm using a linear-regression between the observed visibility and simulated hydrometeors and humidity near the surface exhibits overall improvement in the visibility forecasts.

공항에서 면세점 매출액이 항공기 지연에 미치는 영향에 관한 연구 - 인천국제공항 탑승동 취항 항공사 대상으로 - (A Study on the Effect of Duty Free Shop Sales on Airline Delay at Airport - Focused on airlines of Incheon International Airport -)

  • 김광일
    • 한국항공운항학회지
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    • 제26권2호
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    • pp.123-131
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    • 2018
  • Air transport industry tries to enhance punctuality, stability and amenity for customer's satisfaction. Especially airlines and airports do make an effort as the distance between these two stakeholders and passengers are close. This research has empirically discussed the relationship between duty free shop purchase of passengers and the number of flights and hours of schedule delay at the airport. According to the result, the total sales of duty free shop sales have meaningful influence on the number of flights and hours of delay. In order to decrease such an impact, close cooperation between airports and duty free shops required.

빅데이터 분석을 활용한 공항 혼잡도 분석 - 김포공항 사례를 중심으로 - (Airport Congestion Analysis with Big Data Analysis - The Case of Gimpo Airport -)

  • 김진아;김진기
    • 한국항공운항학회지
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    • 제28권2호
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    • pp.36-46
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    • 2020
  • This study is designed to help customers use more comfortable airports by predicting congestion and congestion times by identifying the traffic routes of passengers in the airport building by day of the week and time by using Wi-Fi sensor collectors, one of the IoT technologies. Analysis of passenger traffic analysis data showed that the most congested time zones were from noon. to 2p.m. for all facilities, which could be used to improve major facilities. Regression analysis of factors affecting congestion found that self-check-in reduces congestion and check-in counters increases congestion. These findings will provide important implications for operations, including congestion management at airports.

허브 공항의 환승객을 고려한 최적 주기장 배정에 관한 연구 (A Study on the Optimal Gate Assignment with Transit Passenger in Hub Airport)

  • 이희남;이창호
    • 한국경영과학회:학술대회논문집
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    • 한국경영과학회/대한산업공학회 2003년도 춘계공동학술대회
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    • pp.402-408
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    • 2003
  • Now many major airports in the world which operate strategic alliance or Hub & Spoke system have met capacity restriction and confusion problems. And the time and the walking distance for boarding to flight are important standard to measure customer convenience. And the effective gate assignment guarantees customers convenience as well as increasing airport capacity without expanding established airport equipments. So it can be a major concern to manage airports. So this paper formulate gate assignment problem in the hub airport not quadratic assignment problem but a improved single-period integer problem which is minimize local and transit passengers I walking distance. As a result, this study will present a method producing optimal gate assignment result using optimization software. We use real flights and gates data in the national airport, so we will compare a assignment results with a real airport assignment results and previous researches and analyze those results.

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INM을 이용한 항공기소음 예측시 주요변수에 관한 연구 (Study on an Important Variable in the Prediction of Aircraft Noise Using INM)

  • 김미진;이병찬
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2005년도 추계 학술대회논문집(수송기계편)
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    • pp.53-56
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    • 2005
  • Aircraft noise is a important problem to inhabitants near airports. INM is one of programs for determining the predicted noise impact in the vicinity of airports. It has been widely using for engineers to evaluate aircraft noise. However it is difficult to predict aircraft noise in case of lack of exact INM input data. The exact informations about a fighter plane are not known well for a security problem. This study presents methods of reducing errors between measurement and simulation when the exact INM input data is not known. Especially we adjusted the thrust force of aircraft engine and reduced the error.

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환경요소를 고려한 국내공항 생산성 측정 : DEA모형의 적용 (Measure the Productivity of Airports in Korea Considering Environment Factor : An Application of DEA)

  • 전승진;이철웅
    • 대한산업공학회지
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    • 제37권4호
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    • pp.350-357
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    • 2011
  • In the recent, it is gradually important for airport to consider environmental aspects as sustainable development is emerged. ICAO, FAA and individual countries has tried to reduce airport noise and pollution. Thus, the effort is needed to incorporate environmental factor into productivity indicator of airport. Our paper use DEA method with the non-parametric directional output distance function(DDF) to assess productivity of 14 airports in Korea during 2008~2010. In addition to three inputs, two conventional outputs, two undesirable outputs have been considered : noise and air pollution. Results are compared from models that do not include undesirable outputs. Inclusion in the analysis of the undesirable effects of airport operations leads to greater and closer airport's efficiency scores.

항공기소음의 환경영향평가에 관한 연구 I : 소음평가 구축방안 (Study on EIA of Aircraft Noise I : Noise Assessment Construction Plan)

  • 선효성;박영민
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2006년도 춘계학술대회논문집
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    • pp.289-291
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    • 2006
  • The noise pollution caused by air traffic is one of the popular environmental issues, which consistently gives rise to public discussion today especially among local residents near airports. But, because there is a growing tendency that large residential areas are constructed in flatlands around airports due to a high population density, the importance of the EIA in connection with aircraft noise is increased to take precautionary measures. Therefore, this paper examines the present status and the improvement plan of aircraft noise impact assessment.

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항공테러 방지를 위한 공항보안 개선대책 연구 (Study on Improving Airport Security to Prevent Air Terrorism)

  • 김관호
    • 한국항공운항학회지
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    • 제21권4호
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    • pp.90-105
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    • 2013
  • As witnessed in September 11 attacks, air terrorism is often the most effective means to achieve their goals, and thereby requires a sophisticated level of security measures. Moreover, considering the nature of air transportation, the prevention of air terrorism demands a wide range of international cooperation and joint efforts such as timely sharing of information related to air terrorism (such as latest terror techniques and list of terrorists) between nations, International Air Transport Association (IATA) and International Civil Aviation Organization (ICAO) As most air terrorism can be effectively prevented through security and search activities in airports, this study has focused on researching security measures and issues in major airports around the world, along with the potential measures to improve them. To achieve this effect, this paper offers solutions to preventing air terrorism by exploring appropriate responses to various type of air terrorism, deployment of advanced security and search equipment, techniques to identify terrorists, R&D on equipments to physically take down terrorists and systematic improvements on airport security search process.