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RISS 인기검색어
- 검색키워드
- 저자 : 김선욱(S. W. Kim) (검색결과 17 건)
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2차원 배열 자기저항소자를 이용한 공간 맥진파형의 전산모사 분석
김미선(M. S. Kim),김선욱(S. W. Kim),김기왕(G. W. Kim),이수진(S. J. Lee),이선구(S. G. Lee),이현숙(H. S. Lee),박달호(D. H. Park),황도근(D. G. Hwang),이상석(S. S. Lee) 한국자기학회 2005 한국자기학회지 Vol.15 No.6
To get the spatial feature of arterial pulse, we designed spatial pulse diagnostic apparatus (SPDA) using a 2-dimensional magnetoresistive sensor array. The magnetic field distribution for magnet array was simulated using finite element method. We recognized that the field distribution of parallel magnet arrays was more sensitive and uniformed than that of perpendicular one. Also the spatial displacements of magnet array were agreed with the output signal of magnetic tunnel junction (MTJ) sensor array.
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움직이는 장애물이 있을때 이동 로봇의 충돌 회피 알고리즘
김선욱(S. W. Kim),권대갑(D. G. Gweon),차영엽(Y. Y. Cha) Korean Society for Precision Engineering 1997 한국정밀공학회지 Vol.14 No.1
For the use of a mobile robot in dynamic environment, a collision-avoidance algorithm with moving obstacle is necessary. In this paper, a collision-avoidance algorithm of a mobile robot is presented, when a mobile robot detects the collision with moving obstacle on the navigational path. Using reported positions of moving obstacle with sensors, the mobile robot predicts the next position of moving obstacle with possibility of collision. The velocity of moving obstacle is modeled as random walk process with Gaussian distribution. The optimal collision-avoidance path in which turning motion of the mobile robot is considered is generated with relative velocity between the mobile robot and moving obstacle. For the safety of collision-avoidance path, attractive potential with the safety factor is suggested. The simulation results using this algorithm show the mobile robot avoids collision with moving obstacle in many cases.
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게이트 99mTc - MIBI 심근 SPECT의 심근 분절 운동 평가능력
이동수(D . S . Lee),정준기(J . K . Chung),이명철(M . C . Lee),김선욱(S . W . Kim),김상현(S . H . Kim),현인영(I . Y . Hyun),이명묵(M . M . Lee),고창순(C . S. Koh) 대한핵의학회 1995 핵의학 분자영상 Vol.29 No.4
Information about regional wall motion obtained with gated Tc-99m-MIBI SPECT was compared in 23 subjects(4 normals) to echocardiography or contrast left ventriculography. Gated SPECT study using 20-30 mCi Tc-99m-MIBI were aquired for 8 frames/RR interval (aqusition time=40min.) and processed with Cine Mode computer protocol. Regional wall motion was assessed by visual analysis. The concordance with echocardiography was 88% and with contrast ventriculography was 78%. We conclude that gated Tc-99m-MIBI SPECT was effective in assessing the regional wall motion with the information of regional perfusion in one study.
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