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차세대고속철도기술개발사업 시스템인터페이스 시험기술 개발
강병모(Kang B.M),정상국(Jeong S.G),안효권(Ahn H.K),최환침(Choi. H.C),유승위(Yu S.W) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
Since a long time ago, many railway engineers analyze and discuss the interface between the sub-system of railway, such as a wheel/rail interface, pantograph/catenary interface etc. The verifying of the system interface could help to achive the optimized performance and safety of the railway system considering that the railway system is constructed by various engineerings, such as civil, mechanical, electrical, etc. A rolling stock with distributed drive system, which will be developed by HEMU-400x project, is capable of running on high speed line and conventional line in Korea. To verify the performance of rolling stock, test run will be done with revenue service line. And the test items of the system interface have to be selected to verify a functional compatibility and physical force between rolling stock and infrastructure. In this paper, the authors will indicates the test items to verify system interface. To achive the conclusion, the authors analyze a specification of the development train and the design value of Seoul-Busan high speed line, which will be used for testing of the development train, and also, study the various case of high speed train commissioning.
아닐린의 화학적 중합시 dimer의 생성 및 반응속도에 미치는 양성자산의 영향
정상국,박용석,오응주,서정선 명지대학교 대학원 1999 대학원논문집 Vol.3 No.-
Aniline was polymerized in various protonic acid(HF, HCI, HB_r, HI, H_2SO_4) aqueous solutions with different acidity. During the reaction, the dimer formation and the reaction rate were examined as functions of acidity(pH) and the size of counter ions. Open-circuit potential measurements were carried out to investigate the effect of protonic acid on the reaction rate. The results show that polymerization rate in HF aqueous solution is very slow and polymerization did not occur in HI aqueous solution. These results were explained in terms of acidity and power of oxidation. The ratio of formation of dimers varies with the kind of protonic acid and the results were explained with the nucleophilicity, solvation effect and mobility of counter ions.