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박민흥(Park, Min-Heung),김철수(Kim, Chul-Soo) 한국산학기술학회 2012 한국산학기술학회논문지 Vol.13 No.9
일반 간선열차에서 주로 사용하는 저상승강장과 수도권 전동차에서 주로 사용하는 고상승강장을 동시에 안 전운행하기 위한 니즈기술로서, 저상/고상 승강장에 상관없이 승하차할 수 있는 철도차량 승강문 스텝장치가 필요하 다. 본 연구에서는 이를 대비하여 저상/고상 승강장 겸용 승강문 스탭의 기능 및 제작 요구사항을 검토하였다. 세밀히 검토한 결과, 합리적 설계안은 자체 언더프레임의 손상 및 철도승강장의 이격거리 변동성을 최소화 할 수 있는 텔레 스코픽 슬라이딩 스텝방식이라고 판단된다. 또한 다양한 요구조건을 고려하여 각 단계별 스텝 동작 과정 및 제어 흐름도를 제시하였다. In order to operate trains both mainline railroad platform and metropolitan subway line platform, it is necessary to develop the doorstep equipment of the rolling stock regardless of low(500mm, mainline) and high level platforms(1,135mm, metropolitan subway line) because of the requisite door safety system. In this study, two different types of platforms were examined. On closer examination, it seems that the conceptual design is suitable for telescopic sliding type doorstep equipment to minimize damage to the carbody underframe of railway vehicles and can also minimize the variation of the distance between the railway platform. Furthermore, the operation process and control flowchart of doorstep equipments by stages are proposed by various performance requirements.
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저상 및 고상 철도 승강장 겸용 승강문 제어유닛과 열차모니터링시스템의 인터페이스 설계
김철수(Chul-Su Kim),김재문(Jae-Moon Kim) 대한전기학회 2014 전기학회논문지 Vol.63 No.2
In order to operate trains both mainline railroad platform and metropolitan subway line platform, it is necessary to develop the door step equipment of the rolling stock regardless of low(500mm, mainline) and high level platforms(1,135mm, metropolitan subway line) because of the requisite door safety system. In this study, TMS-DCU interface is studied for low and high level railway platforms. As a result, Design circuit of TMS(Train Management System)-DCU(Door Control Unit) interface is suitable for telescopic sliding type doorstep unit to minimize damage to the carbody underframe of railway vehicles.
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철도차량의 저상 및 고상 승강장 겸용 승강문 스텝에 대한 내구성 평가
김철수(Kim, Chul-Soo),박민흥(Park, Min-Heung) 한국산학기술학회 2012 한국산학기술학회논문지 Vol.13 No.9
국내 여객을 취급하는 철도역사의 승강장은 간선철도노선의 저상승강장(500mm)과 광역전철구간의 고상승강 장(1135mm)으로 구분 운용되고 있다. 저상승강장 전용 중․고속 열차가 수도권 전철구간(고상승강장)과 본선구간(저상 승강장)에서 혼용 운영될 경우를 대비하고 안전운전 및 승객편의를 함께 고려하기 위해 저상 고상 승강장 겸용 승강 시스템의 개발은 필수적이다. 한편 현재 개발 중인 시스템(스텝)에 대한 국내의 내구성 및 신뢰성 시험 기준은 존재 하지 않는다. 따라서 본 연구에서는 저상/고상 승강장 겸용 텔레스코픽 슬라이드방식 승강문 스텝의 개발을 위한 연 구 일환으로서, VPD관점에서 내구성 해석을 수행하고 신뢰성 보증시험에 준한 무고장 시험시간동안 실물 리그시험 을 통하여 이의 내구성 기준 및 보증수명을 검토하였다. The platform of railroad station for domestic passenger train has been operated at two categories like the platforms if low level(500mm, mainline) and high level(1,135mm, metropolitan subway line). To operate both metropolitan subway line and mainline railroad safely, it is essential to develop the doorstep equipment of railway vehicle regardless of low and high level platforms. On the other hand, the domestic test standard at durability and reliability of doorstep equipment has not been existed until now. This study aims at the development on doorstep equipment of telescopic sliding type for low and high level platforms. Durability analysis with VPD(Virtual Product Development) techniques are performed and the durability standard & qualification life through the rig test during no failure test time is examined in accordance with reliability qualification test.
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김현주(Kim, Hyun-ju),이근명(Lee, Keun-myoung) 한국사회언어학회 2017 사회언어학 Vol.25 No.3
This study investigated how computer-mediated communication with non-hierarchical language use such as using no titles or honorific forms affects speakers participation in group discussion in a hierarchical organization setting. Assuming that the complexity of the Korean honorific system could be a factor of Korean students or employees passive participation in discussion in class or workplace, we examined whether the use of equal-level speech styles would facilitate the active discussion environment. Furthermore, an online chat platform was served as an online discussion space, which enforced equal-level talk. The results showed that the participation rates of speakers of low position, who maintained a low participation rate during offline meetings, gradually increased during online discussion, while participants of high position, who were dominant talkers during offline discussion, appeared less active in online meetings. This revealed a statistically significant interaction between communication mode(online vs. offline) and participants rank. Although the language effect was not significant statistically, we found a tendency that the participation rate was higher at the equal-level chat room than at the control room. These findings suggest that speakers act should be influenced by communication modes: speakers of low position seem to participate more freely at an online mode than at an offline mode, although the effect of the Korean honorific system on speakers participation in discussion was not conclusive.
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