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POMY: 햅틱 피드백을 적용한 몰입형 영어 학습 시스템
이재봉(Jaebong Lee),이규송(Kyusong Lee),Hoang Minh Phuong,이호진(Hojin Lee),이근배(Gary Geunbae Lee),최승문(Seungmoon Choi) 제어로봇시스템학회 2014 제어·로봇·시스템학회 논문지 Vol.20 No.8
In this paper, we propose a novel CALL (Computer-Assisted Language Learning) system, which is called POMY (POSTECH Immersive English Study). In our system, students can study English while talking to characters in a computer-generated virtual environment. POMY also supports haptic feedback, so students can study English in a more interesting manner. Haptic feedback is provided by two platforms, a haptic chair and a force-feedback device. The haptic chair, which is equipped with an array of vibrotactile actuators, delivers directional information to the student. The force-feedback device enables the student to feel the physical properties of an object. These haptic systems help the student better understand English conversations and focus on studying. We conducted a user experiment and its results showed that our haptic-enabled English study contributes to better learning of English.
열습환경을 고려한 항공기용 레이돔 볼트 체결부의 베어링 강도에 관한 연구
김호일(Kim Hoil),유구현(Ryu Guhyun),김준(Kim Joon),이규송(Lee Kyusong),박영주(Park Youngju),박범준(Park Byumjun),유홍균(Ryu Hongkyun) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
This research investigated the hygrothermal effect on the strength of the bolt jointed section and moisture contents of composites exposed to hygrothermal environment for composite aircraft radome. The decrease in the strength by testing environments is mainly attributed to the change of the material properties of matrix by temperature and moisture. The composite specimens were tested in three different environmental conditions of RTD(room temperature and dry), CTD(cold temperature and dry) and ETW(elevated temperature and wet). The failure mode of the bolt jointed composite specimens are studied by test and finite element analysis. Finite element analysis reasonably predicts the failure load and mode of the joints. Reliability-based design is performed for the bolt jointed composites of radome.