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한국 중학생의 영어 학습 동기와 탈동기 요인: 상위권 학습자와 하위권 학습자 비교연구
최덕인 ( Choi Duk-in ),김태영 ( Kim Tae-young ) 대한영어영문학회 2013 영어영문학연구 Vol.39 No.2
This paper aims to investigate Korean middle school students’ motivation and demotivation in learning English. To date, only a small number of studies have investigated both motivation and demotivation of Korean middle school students’ English learning. A questionnaire with 20 Likert-scale items for motivation and 40 items for demotivation was administered to 457 middle school students in Seoul and Gyeonggi province. A variety of quantitative analyses revealed that there existed four factors for motivation and eight factors for demotivation among the participants. Results indicated that students having high English proficiency had a higher level of English learning motivation than those having low proficiency in all four sub-factors. For students with low English proficiency, as they advance to a higher school grade, their level of motivation gradually decreased whereas that of demotivation increased. The factors having the highest mean score among the demotivational factors were Compulsory Nature of L2 Study and Reduced Self-confidence, which were even seen in high proficiency student group. Statistical results also suggested that motivation and demotivation were not opposite concepts. This implies that intensely competitive classroom atmosphere in Korea focusing on College Scholastic Ability Test influenced both high and low proficiency groups’ patterns in motivation and demotivation. (Chung-Ang University)
지열원 히트펌프를 이용한 도로융설시스템의 CFD 성능예측에 관한 기초연구
최덕인(Duk-In Choi),김중헌(Joong-Hun Kim),김진호(Jin-Ho Kim),황광일(Kwang-Il Hwang) 한국지열·수열에너지학회 2010 한국지열에너지학회논문집 Vol.6 No.2
Fluent ver.6.3 is used as CFD(Computational Fluid Dynamics) simulator to predict the performance of snow-melting system by geothermal pipes energy. As the results of this simulation, it is clearly shown that 50℃ of working fluid in to geothermal evaluated as more effect comparing to 45℃ of working fluid. The Surface temperature is come to 5℃ at 1㎧ speed and 50℃ temperature of the working fluid.