http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
권준연(Jun Yeon Kwon),이동현(Dong Hyun Lee),박민석(Min Seok Park),천재영(Jae Young Cheon),김하성(Ha Sung Kim),정도현(Do Hyun Jung),김유정(You Jung Kim),이지윤(Ji Youn Lee),권영록(Young Rok Kwon),이채은(Chae Eun Lee) 한국자동차공학회 2023 한국자동차공학회 학술대회 및 전시회 Vol.2023 No.11
The goal of this paper is to improve the turning performance of a 10-inch wheel packaging design with a multi-link suspension to compensate for existing vehicle issues. For this purpose, the wheel alignment elements, which vary according to the kinematic characteristics of the suspension, were efficiently optimized using Catia DMU Kinematics. Toe, camber, and longitudinal wheel center displacement were optimized for up-and-down movement, and steering moment arm distance, caster, and ackerman percentage were optimized for steering to improve the problems of the existing vehicle. Then, with the benefit of a virtual kingpin axis, we were able to free up wheel packaging space to maintain clearance between each component as the vehicle drives. Finally, Adams car was used to simulate the vehicles turning behavior. The yaw rate and lateral acceleration, which are the main components of the vehicles turning characteristics, were compared to the previous years vehicle. This was plotted graphically to confirm the reliability of the athletic performance improvements. This was plotted graphically to confirm the reliability of the athletic performance improvements.
X선 조사에 의해 (Ba, Sr) FBr : Eu 형광 물질에 생성되는 결함 특성
신중기,이종용,배석환,김재홍,권준현,Shin, Jung-Ki,Lee, Chong-Yong,Bae, Seok-Hwan,Kim, Jae-Hong,Kwon, Jun-Hyun 한국재료학회 2008 한국재료학회지 Vol.18 No.8
The mechanical property of a phosphore layer was investigated by measuring the resolution (LP/mm) and by positron annihilation spectroscopy and SEM. Image plate samples containing the phosphore layer were irradiated by X-rays in a hospital numerous times over a course of several years. The LP/mm values of a (Ba,Sr)FBr : Eu image plate irradiated by X-rays varied between 2.2 and 2.0 over a period of four years. Coincidence Doppler Broadening (CDB) positron annihilation spectroscopy was used to analyze defect structures. The S parameters of the samples from hospital use varied from 0.6219 to 0.6232. There was a positive relationship between the time of exposure to the X-rays and the S parameters. Most of the defects were found to have been generated by X-rays.
FIFA U-20 월드컵 한국 축구 대표팀 선수의 경기 중 포지션별 이동거리 및 활동형태 분석
이용수(Lee, Young-Soo),권준현(Kwon, Jun-Hyun) 한국체육과학회 2021 한국체육과학회지 Vol.30 No.5
The purpose of this study was to analyze moving distance and movement patterns of Korean national football team players by playing positions at the 2019 FIFA U-20 World Cup. Using a video analysis program, we analyzed 54 players who played a full match in 7 games of Korean national football team, and the positions were classified into the central defender(CD), the side defender(SD), the central midfielder(CM), the side midfielder(SM), and forward(FW). For the moving distance, we analyzed the total distance, the distance of the first half, the distance of the second half, and the distance per minute. As a result, we found that CM and SM covered greater total distances than did CD and FW. Also, we found that CM and SM covered larger distances than CD and FW did during the first half and that CM showed the greatest distance than CD and FW did during the second half. Moreover, we found that CM and SM covered greater distances per minute than CD and FW did. In addition, we analyzed the movement patterns by zone 1(walk), zone 2(jog), zone 3(run), zone 4(high intensity run: HIR), zone 5(sprint), and zone 4 & 5 distance per minute. As a result, we found that CD and FW covered larger distances than SD and CM did in zone 1. Also, CM covered the greatest distance in zone 2 than any other positions did, and CM and SM covered larger distances than CD and FW did in zone 3. We also found that SM demonstrated greater distances than CD and FW did in zone 4 and that SM showed larger distances than CM did in zone 5. Finally, SD and SM demonstrated the greatest distances than did any other positions in zone 4 & 5 distance per minute.