• Proceedings of the KOR-KST Conference
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• 1995.05b
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• pp.121-125
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• 1995

The north-south rail transit is main communications artery being planned in Shanghai .This article gives us a brief introduction of the design andits technology concerned. It also suggests four criteria for selecting coaches. It is considered possible to build rail transit by utilizing the state railway in the urban districts. Furthmore, its location and the distance between stations are also implied.

• Bulletin of the Korean Space Science Society
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• 2011.04a
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• pp.25.5-26
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• 2011

이 연구에서는 네트워크 기반의 다중기준국을 이용하여 육상교통환경에서 항법위성의 궤도력에 따른 위치결정 성능향상의 정도를 분석하였다. 위성항법보정시스템(Differential Global Positioning System)을 활용하였을 경우 항법위성의 궤도력 오차정보가 소거되지 않는다는 가정 하에 방송궤도력이 아닌 International GNSS Service(IGS) 정밀궤도력중 신속궤도력(Ultra-Rapid)을 이용하여 궤도력 오차에 따라 위치결정 정확도가 향상됨을 확인하였다. 일반적으로 사용하는 위성항법보정시스템을 활용한 위치결정 방법은 기준국과 사용자의 거리에 따라서 그 성능이 달라진다. 이는 궤도 오차, 대류층 및 전리층 오차 등이 거리에 의존적이기 때문이다. 다중기준국을 활용하는 방법은 거리가 멀어짐에 따라 소거되지 않는 오차등을 극복하기 위한 기술이며 사용자 주변을 둘러싼 기준국들의 측정값을 조합하여 보상을 하거나 정확하게 모델링하여 사용자에게 오차정보를 보정정보로 전송하여 위치결정의 성능을 향상시키는 방법이다. 분석된 결과는 네트워크 기반의 다중기준국 환경에서 사용자와 기준국간의 거리에 따른 공간이격 오차정보 보정정보 생성 연구에 활용하며 이를 통해 육상교통 사용자의 위치결정 정확도 성능을 향상하는데 기여할 것으로 기대된다.

• Journal of the Korea institute for structural maintenance and inspection
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• v.28 no.4
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• pp.37-47
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• 2024

This study proposes a track maintenance quantity estimation model that considers evolution of rail fatigue damage and ballast settlement based on actual maintenance data from the Gyeongbu high-speed railway, and revises the existing life cycle cost (LCC) model for railway track. Using this model, maintenance quantities and life cycle costs based on different track quality levels are evaluated and discussed. According to the results, it is confirmed that applying the track maintenance quantity estimation model that accounts for rail fatigue damage and ballast settlement allows us to reasonably estimate maintenance costs close to the actual data. The track quality coefficient significantly influences both rail and ballast maintenance quantities, with ballast maintenance having a greater impact than rail maintenance. Additionally, as train speed increases, both rail and ballast maintenance quantities rise. Moreover, a higher track quality coefficient leads to a steeper increase in maintenance quantities with increasing train speed. Consequently, LCC also exhibits a faster growth rate over time with higher track quality coefficients and faster train speeds, resulting from an increased proportion of maintenance costs.

• Proceedings of the KOR-KST Conference
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• 1995.05a
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• pp.165-169
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• 1995

다원화투자,공사화경영, 시재건립시장경제조건하,해결성시기출설시건설 자김긴결적유효도경. 이시정부제공토건부분건설자김,철로국여연선구토지절가인고, 용상술량항자본수익보정상업투자15 %적회보솔, 래흡인외상제공구치차량설비적투자, 합삼위일,성립항목법인실체,재정부적정책부지하,자주개발경영,사상해시남북궤도 교통건설조도최가적투자경영방식.

• Computational Structural Engineering
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• v.32 no.1
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• pp.15-24
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• 2019

• Superconductivity and Cryogenics
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• v.20 no.1
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• pp.4-9
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• 2018

• Journal of the Korean Society for Railway
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• v.12 no.4
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• pp.526-534
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• 2009

PRT(Personal Rapid Transit) can be described as a system of driverless taxicabs, that. automatically take passengers to their destinations along dedicated guideways, without intermediate stops.It is ideally suited as a short feeder transportation for on-demand circulation operations at train stations, airports, office complex, amusement park and shopping center. This PRT study do suggest that a PRT system could provide a high level of mobility to the commuters making work trips, workers making work, shopping and other non-work trips, residents making shopping and other non-work trips and recreational riders.This study presents the possibilities of PRT applications in national level. As the technology continues to advance, there may be opportunities to improve the reliability, and efficiency of our future public transportation systems.

• Journal of the Korean Society for Railway
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• v.6 no.1
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• pp.24-41
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• 2003

1개의 주행로(궤도형)위에 차량이 과좌 또는 현수(懸垂)하여 주행하는 교통기관으로 고무바퀴가 보이지 않는다. 과좌형 모노레일(Straddle type) : 궤도형위에 걸터않아서 주행하는 방식 현수형 모노레일)Suspended type) : 궤도형을 달리는 대차로부터 자체가 매달리는 방식으로 지상구간의 설정이 불가능하다. (지상구간 설정이 불가능하다)(중략)

• Journal of Korean Society of Transportation
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• v.20 no.2
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• pp.191-191
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• 2002

• Transportation Technology and Policy
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• v.13 no.6
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• pp.31-34
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• 2016