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강유신(Kang Yu- Shin),추준섭(Choo Jun-Sup),김종태(Kim Jong-Tae) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
This study examined the existing issues and current status of how to best approach the establishment of railroad asset of the corporation in the long run. It also explored some preventative measures for further problems. Based on the law of state property and related railroad statutes, the research referred to basic plans for railroad management of Korea Rail Network Authority, the outcome of file research, handbook of asset management, guidelines and policy of Ministry of Finance and Economy for state property management, recommendations of the Board of Audit and Inspection and fact-finding research of state property (miscellaneous properties). The findings are making a few suggestions on the service of the Korea Rail Network Authority and Korail.
체육수업에서 교사의 피드백이 중학생의 내적동기 및 자기핸디캡에 미치는 영향
강유신 ( Kang Yu-shin ),이근모 ( Lee Keun-mo ),김지선 ( Kim Ji-sun ) 부산대학교 과학교육연구소 2018 교사교육연구 Vol.57 No.3
본 연구의 목적은 체육수업에서 교사의 피드백이 중학생들의 내적동기 및 자기핸디캡에 미치는 영향을 분석하는 것이다. 이를 위해 B지역과 U지역의 중학생 450명을 대상으로 수집된 자료를 SPSS 23.0 프로그램을 이용하여 분석하였다. 타당도와 신뢰도 검증을 위해 탐색적 요인분석과 Cronbach’s α를, 각 요인 간 인과관계 분석을 위해 다중회귀분석을 실시한 결과는 다음과 같다. 첫째, 체육교사의 피드백이 중학생의 내적동기에 미치는 영향에서 교사의 부정적 비언어 피드백은 내적동기 하위요인인 재미·노력에 부정적 영향을 미치고, 격려·칭찬피드백은 재미·노력과 유능감에 긍정적인 영향을 미치는 것으로 나타났다. 또한, 부정적 비언어 피드백은 내적동기 하위요인인 긴장·불안에 정적인 영향을 미치고 격려·칭찬 피드백은 긴장·불안에 부적인 영향을 미치는 것으로 나타났다. 둘째, 체육교사의 피드백이 중학생의 자기핸디캡에 미치는 영향에서 교사의 부정적 비언어 피드백은 자기핸디캡에 정적 영향을 미치고, 격려·칭찬 피드백은 자기핸디캡에 부적 영향을 미치는 것으로 나타났다. 셋째, 중학생의 체육수업에 대한 내적동기가 자기핸디캡에 미치는 영향에서 중학생들의 재미·노력은 자기핸디캡에 부적인 영향을 미치며, 긴장·불안은 자기핸디캡에 정적인 영향을 미치는 것으로 나타났다. The purpose of this study was to analyze the effect of teacher feedback on middle school students’ intrinsic motivation and self-handicapping in physical education class. For this purpose, 450 middle school students participated in the questionnaire survey in the B and U cities. The collected data were analyzed by SPSS 23.0 program with several factors. Exploratory factor analysis and Cronbach’s α were used to verify the validity and reliability. Multiple regression analysis was performed to analyze the causal relationship between each factor. The study results are as follows. First, in the effect of physical education teacher’s feedback on the intrinsic motivation of a middle school students, negative non-verbal feedback, a sub-factor of teacher’s feedback, has a negative effect on fun and effort, which are sub-factors of intrinsic motivation. Encouragement and praise feedback have a positive effect on fun and competence. In addition, negative non-verbal feedback, which is a sub-factor of teacher’s feedback, has a positive effect on tension and anxiety, which are sub-factors of intrinsic motivation. Encouraging and praise feedback have negative effects on tension and anxiety. Second, in the effect of physical education teacher’s feedback on self-handicapping of middle school students, negative non-verbal feedback, which is a sub-factor of teacher’s feedback, has a positive effect on self-handicapping. Encouragement and praise feedback have a negative effect on self-handicapping. Third, in the effects of intrinsic motivation on self-handicapping on middle school student’s physical education classes, it is shown that the fun and effort, which are sub-factors of intrinsic motivation, have a negative effect on self-handicapping, and tension and anxiety have a positive effect on self-handicapping.
강유신(Kang Yu-Shin),김우제(Kim Woo-Je),홍순흠(Hong Soon-Heum) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
With the opening of the KTX(Korean Train Express) in April 2004, Express Train service started in KNR(Korean National Railroad). Each KTX train consists of 18 passenger compartments in total, such as of 4 first class car and 14 standard class car. And 2 compartments of standard class are serviced as a unreserved seat only. The Unreserved seat system of the KTX is convenient to the customer who wants to take a train without making a reservation. This study was designed to analyze the unreserved seat system of the KTX which is currently used, and to investigate the necessary conditions for gaining in public favor by developing the system.
강유신(Yoosin Kang),홍의석(Uiseok Hong) 한국자동차공학회 2015 한국자동차공학회 부문종합 학술대회 Vol.2015 No.5
Tread material of tire have been actively developed to decrease the rolling resistance depending on the growth of importance for fuel efficiency of vehicle. Tread material has significant impact on rolling resistance, braking distance and tread wear and they are trade-off relationship on vehicle performance. In order to make a balance regarding to these performances a novel functionalized S-SBR were employed. Also through the optimization of recipe and procedure for rubber mixing, traction and tread wear performances are obtained in the level of a good performance tire in market. 10 percent decrease of rolling resistance comparing with reference tire is achieved.
강유신(Yoosin Kang),양경모(Kyungmo Yang),주용태(Yongtae Joo),민병권(Byungkwon Min) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
Oil resistance of EPDM (Ethylene Propylene Diene Monomer), a rubber material for general purpose in automobile industry; is developed by high loading of carbon black. This paper describes improving procedures for compounding the EPDM rubber for air intake hose. Through the testing of material, part, and vehicle test, low oil swell EPDM for air intake hose is fully verified.