• 한국대기환경학회:학술대회논문집
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• 한국대기환경학회 2003년도 춘계학술대회 논문집
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• pp.157-158
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• 2003

급증하는 자동차 수요로 인해 발생되는 배출량 증가는 자동차 운행의 특성상 대도시 대기오염의 주원인으로 작용하고 있다. 자동차 배출오염물질의 배출량 추정 및 관리에 있어 연간 배출량 뿐만 아니라 월별 기온변화에 따른 배출량의 시간분포 또한 고려되어야 한다. 본 연구에서는 Hot emission에 부가되는 Cold start emission과 Evaporative VOC emission의 산정에 있어서 차종/차령에 대해서 월별 배출량을 추정하여 보았다. (중략)

• 한국철도학회:학술대회논문집
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• 한국철도학회 1999년도 추계학술대회 논문집
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• pp.511-518
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• 1999

Though not very often, a train accident can cause large number of fatality. As a result, public concern about its safety is increasing nowadays. Tn this paper, the structural crashworthiness of Korean High Speed Train trailer was examined through FE analysis. Crash analyses on energy absorbing part and safety zone were carried out to determine each section force. Rollover analysis was performed to observe the amount of intrusion in the passenger's area in case of rollover accident.

• 한국ITS학회 논문지
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• 제11권2호
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• pp.57-66
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• 2012

본 연구에서는 향후 국내 도입이 예상되는 버스 우선신호시스템의 도입시 발생하는 운영상 효과를 현장조사 자료를 기반으로 평가하여 제시하였다. 이를 위하여 시스템 도입 전후의 통행시간과 교통량을 측정하여, 차종별 개별 통행시간의 분포와 교통량, 그리고 통행시간의 변화를 분석하였다. 사전/사후 조사의 교통량 분석 결과, 승용차와 버스 모두 방향별로 약간의 교통량 변화가 나타났으나, 그 크기는 통행시간의 변화에 큰 영향을 미치지 않았다. 개별차량의 통행시간을 분석한 결과, 버스 우선신호제어 실시 후에 해당 구간의 승용차 및 버스의 통행시간 분포가 매우 개선되었다. 그리고 통행속도의 경우, 첨두와 비첨두 시간대 모두 주도로 방향의 버스 및 승용차의 통행속도가 증가하였다. 전체적으로 승용차 속도는 25.9 km/h에서 27.6 km/h로 약 6.5% 증가하였고, 버스는 19.2 km/h에서 21.3 km/h로 약 10.5% 속도가 증가하였다. 통계적 검증 결과 이러한 속도 변화는 95%신뢰수준에서 통계적으로 유의하였다. 본 연구결과는 향후 버스우선신호 관련 연구의 기초자료로 활용될 것으로 기대된다.

• 한국항공운항학회지
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• 제22권3호
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• pp.1-7
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• 2014

The base of leisure air activities are consistently expanding and its demand is expected to increase attributed to GDP growth and people's interest in its activity. Utilizing Visual Flight Rule, light sport aircrafts and ultra-light aircrafts are not under the effect of air traffic control center, which resulted in passenger injury due to emergency landing for adverse weather conditions and technical issues after pulling into mountain area, ocean and even urban area. Such events encouraged safety consciousness toward leisure aircraft activities and developing a measure to prevent a recurrence of the accident. This research focuses on suggesting compositive system for preventive safety management system by providing user based Flight information service and operating effective system, necessary for leisure aircraft activities.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2016년도 춘계학술대회
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• pp.62-63
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• 2016

여객선에는 다양한 종류의 센서와 장비가 설치되어 있다. 이러한 센서와 장비로부터 수집되는 데이터는 여객선의 안전운항 분석을 위해 육상 시스템과 연계가 필요하지만 선박이 LTE 통신을 이용하지 못하는 지역을 운항할 경우 AIS, 위성, MF/HF 등과 같이 다른 대체 통신망을 이용한 정보 전송이 필요하다. 본 논문은 AIS 통신을 이용한 센서정보 전송을 위해 여객선에서 수집되는 센서 데이터의 프로토콜과 종류를 조사하고 선박 센서보고용 ASM 메시지를 설계하였다.

• 융복합기술연구소 논문집
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• 제11권1호
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• pp.25-28
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• 2021

Recently, the fire safety of road tunnels has been important issues in South Korea. However, proper fire safety regulations has not made for road tunnels. Due to geographical challenges in South Korea, road tunnels should be constructed to secure stable traffic flows. In the Guidelines for Installing and Managing Disaster Prevention Facilities of Road Tunnels (NFSC 603), main target vehicles are passenger cars. This guidelines cannot support big fires from larger vehicles such as cargo, oil trucks. In this study, fire safety for a road tunnel in port area was analyzed with fire dynamics theory under cargo truck fire scenario. Sujunsan road tunnel in Busan city was chosen as a target tunnel, which links between Busan port and highways to increase cargo shipping. The results show the limitations of present guidelines (NFSC 603) for road tunnel from large fire situations.

• The Journal of the Acoustical Society of Korea
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• 제21권2E호
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• pp.63-70
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• 2002

In this paper, an optimization technique for thin walled beams of vehicle body structure is proposed. Stiffness of thin walled beam structure is characterized by the thickness and typical section shape of the beam structure. Approximate functions for the section properties such as area, area moment of inertia, and torsional constant are derived by using the response surface method. The approximate functions can be used for the optimal design of the vehicle body that consists of complicated thin walled beams. A passenger car body structure is optimized to demonstrate the proposed technique.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 춘계학술대회 논문집
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• pp.953-958
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• 2007

Passenger safety is a primary concern of railway system but, it has been urgent issue that dozens of people are killed every year when they are fallen from train platforms. In this paper, we propose a vision based monitoring system for railway station platform. The system immediately perceives dangerous factors of passengers on the platform by using image processing technology. To monitor almost entire length of the track line in the platform, we use several video cameras. Each camera conducts surveillance its own preset monitoring area whether human or dangerous object was fallen in the area. Moreover, to deal with the accident immediately, the system provides local station, central control room employees and train driver with the video information about the accident situation including alarm message. This paper introduces the system overview and detection process with experimental results. According to the results, we expect the proposed system will play a key role for establishing highly intelligent monitoring system in railway.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2010년도 춘계학술대회 논문집
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• pp.730-738
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• 2010

철도역세권개발사업은 사업운영자나 시행자, 민간사업자 등 주관적 이해관계에 따라 시설의 중요도가 다양할 수 있지만 무엇보다도 고객만족도 측면에서 철도이용자에 대한 관심이 중요하다. 철도역사 내부시설은 호텔, 백화점, 업무시설, 위락, 편의시설 등을 유치하여 이용자 생활공간으로 만들고, 역사내외 연결통로, 철도, 지하철, 버스, 택시, 자전거 등을 연결한 종합 환승터미널, 보행자 동선 등 이용자의 편리성 시설이 매우 중요하다고 할 수 있다. 본 연구에서는 철도역세권 개발사업의 역사이용시설 편리성면에서 중요인자를 AHP기법을 이용하여 상대적 중요도를 분석하여 우선순위를 도출하였다. 철도 이용자와 철도공사 직원의 비교 분석결과를 보면 가장 상위중 요인자인 역사이용시설 중 직원이나, 시설이용자 모두 동일하게 여객시설, 승강시설을 중요순위로 선택하였다, 세 번째 중요수위는 직원은 이동시설을, 고객들은 위생시설을 선택한 것으로 나타났다. 하위중요인자 결과를 살펴보면 직원, 고객 모두 여객시설 중 승강장, 대합실에서는 휴게시설, 승강시설에서는 에스컬레이터, 이동시설에서도 에스컬레이터, 안내시설에서는 점자블록, 부대시설에서는 주차장을 중요하게 선택하였다.

• Journal of East Asia Management
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• 제3권2호
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• pp.21-41
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• 2022

This study aims to analyze the characteristics of the management situation of the Korea Railroad Corporation(KORAIL) through the management innovation process of the KORAIL and to suggest its implications for military application. Despite stable demand, the railway passenger industry had the limitation of not being able to abolish deficit routes due to public service obligations. In addition, the launch of the Suseo High-Speed Line has introduced a competitive system, posing a threat to corporate management. KORAIL wanted to overcome this crisis by innovating its management through the utilization of big data, improvement of the freight business, decentralization of demand, the introduction of tourism railroads, and development of station influence areas. By utilizing big data, KORAIL was able to optimize the railway fare system while reducing fixed costs spent on railway maintenance. It also drastically reduced the station of cargo and created a base station to pursue economies of scale. On the other hand, the existing exclusive station system was abolished to solve the chronic saturation of the downtown area, and the railway demand was moved to Gwangmyeong Station and Suwon Station to optimize the passenger supply. In particular, it developed a new business model called the tourism railway by developing the mountain Byeokjin Line, which was a chronic deficit line, and sought to improve liquidity through the development of the station influence area. Such a process of innovation at KORAIL suggests an appropriate direction in seeking ways to innovate the military medical institutions. First of all, the necessity of improving organizational immersion through the development of a personnel structure suitable for the compulsory organization, while expanding the facilities of the division and corps, and reducing the time required for medical treatment and waiting through the establishment of a data-based medical system was suggested. Next, it was also discussed to integrate the National Health Medical College, which received accreditation as a medical facility through the designation of advanced general hospitals and is ultimately under discussion with the Medical Institution. Through this, we hope that the military medical institutions, which are facing various challenges, will overcome existing limitations and be re-lighted as innovative institution that provides comprehensive public health services.