http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
전종화(Zhong-Hua Quan),최선아(Sun-Ah Choi),최동혁(Dong-Hyuk Choi),조찬호(Chan-Ho Cho),박기수(Gie-Soo Park),류명선(Myung-Seon Ryou) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5
CBTC(Communication Based Train Control) car-borne equipment, a part of the communication based train control system, mainly consists of automatic train protection(ATP) functions, automatic train operation(ATO) functions as well as the interface functions with other equipment including CBTC wayside equipment and train control management system etc. The CBTC car-borne software implementing ATP/ATO functions is a real-time embedded software requiring a high level of safety and reliability. To satisfy the requirements of the CBTC car-borne software, the model-based design techniques are applied with SCADE(Safety-Critical Application Development Environment) to the development of the CBTC car-borne software. In this paper, we illustrate the process modeling the car-borne ATP/ATO functions satisfying system requirement specification with system requirement management, modeling and document generation tools etc. supported by SCADE. In addition, the developed models corresponding to the ATP/ATO functions are applied to the train with CBTC car-borne equipment through its corresponding EN-50128 standards-compliant C code generated by the code generator. It is shown from the test result that the ATP/ATO models developed by SCADE work well while the trains are running in driverless operation mode.
융합 R&D 전략이 과학기술성과에 미치는 영향에 관한 연구 : 대학의 정부 R&D 사업을 기반으로
홍유정(You-jung Hong),최선아(Seon-ah Choi),송영화(Yeong-wha Sawng) 한국혁신학회 2021 한국혁신학회지 Vol.16 No.3
본 연구는 융합 R&D의 실질적인 성과 평가 체계와 R&D 투입 요소를 성과 창출에 연계할 방안의 전략적 고찰 과정이 다소 미흡하다는 점을 지적하며, 융합 R&D의 질적 성과 제시와 성과 제고를 위한 전략적 시사점을 도출하고자 한다. 이를 위해 융합R&D를 주요하게 수행하는 주체인 대학을 중점적으로 연구를 수행하였다. 음이항 모형 분석 결과에 따르면 활용적 전략의 경우 논문 수, 다양성, 융합성에 유의한 정(+)의 영향을 나타냈으며, 탐험적 전략의 경우 양적 성과 및 질적 성과 모두와 유의한 정(+)의 영향관계를 가지고 있었다. 협력 전략의 경우에는 특허 수, 융합성과 정(+)의 관계를 보이고 있었다. 가산형의 분위회귀분석 결과에 따르면 활용적 전략은 양적ㆍ질적 성과와의 관계가 성과 수준별로 상이하게 나타났으며, 탐험적 전략은 성과 수준에 따라 영향 관계가 변화 없이 모든 종속변수와의 유의한 정(+)의 관계를 나타냈다. 협력 전략은 특허 수와의 관계에서는 모든 성과 수준에서 긍정적인 영향을 주는 것으로 나타났으며, 질적 성과 중 융합성이 중간 수준일 때와 높은 경우 성과에 유의한 정(+)의 영향을 미치는 것으로 나타났다. 이와 같은 결과를 토대로 과학기술 성과를 제고하기 위한 효과적인 전략에 대한 시사점을 제공하였으며, 성과 수준별 세부 전략을 제시함으로써 다층적인 시사점을 제공하였다. This study points out that the process of strategic consideration of the practical performance evaluation system of convergence R&D and the method of linking R&D input factors to performance creation is somewhat insufficient. For this purpose, research was focused on universities, which are the main actors in convergence R&D. According to the results of the analysis of the negative binomial model, the Exploitation strategy showed a significant positive (+) effect on the number of papers, diversity, and convergence, and the Exploration strategy had a significant positive (+) effect on both quantitative and qualitative performance. had a relationship In the case of cooperation strategy, the number of patents, convergence, and positive (+) relationship were shown. According to the results of the countile regression analysis, the relationship between quantitative and qualitative performance of the pragmatic strategy was different for each performance level, and the Exploration strategy had a significant relationship with all dependent variables without any change in the influence relationship depending on the performance level. Cooperative strategies have been shown to have a positive impact on all levels of performance in relation to patent numbers, with significant positive effects on performance when convergence among qualitative performances is moderate and high. Based on these results, provided implications for effective strategies for enhancing science and technology performance, and provided multilayer implications by presenting detailed strategies for each performance level.
최동혁(Dong-Hyuk Choi),조찬호(Chan-Ho Cho),전종화(Zhonghua Quan),최선아(Sun-Ah Choi),류명선(Myung-Seon Ryou) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
This paper is concerned with the ATO speed profile generation method in the moving block system. The ATO speed profile is calculated using the acceleration limit and the jerk limit to improve ride comfort. In addition the speed limit and stop distance provided from ATP profile should be considered to ensure safety. In the moving block system the speed limit and the stop position are frequently changed in real-time. Therefore the ATO speed profile should be regenerated immediately according to change of the speed limit and the stop position within the acceleration limit and the jerk limit. In this paper the ATO speed profile generation method is proposed which considers not only frequent changes of the speed limit and the stop position but also acceleration limit and jerk limit. Futhermore the simulation result is presented to verify usefulness of this method.