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이지용(J. Y. Lee),김민주(M. J. Kim),이승수(S. S. Lee),박재덕(J. D. Park),전언찬(E. C. Jeon) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
This paper presents studies on the development of an internal measurement system for the footwear using laser sensor. The measurement system gains to the height of the profile at internal footwear. It accomplishes the 3-axises control which uses ball screws, L-M guides and stepping motors. It is used a laser sensor at the measurement of the distance, and Labview is used for the control and the measurement. We can get the profile through reverse engineering for the LAST. The data of profile is fixed a heigh of the LAST. Then, we try to verify as compare the profile with one which is collected by Internal measurement system.
이지용(J.Y.Lee),김종환(J.W.Kim),허웅(W.Huh),서동선(D.S.Suh) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_2
In this paper, we study about correction method of vehicle unbalance for the road surface measurement.<br/> The vehicle unbalance are calculated by the displacement values that from a left and a right accelerometers. The diplacement values are derived from accelerate value by double integration.<br/> As a results of experiment. we obtain a good integration value and correction method.
태기식(K. S. Tae),김사엽(S. Y. Kim),송성재(S. J. Song),이지용(J. Y. Lee),이영희(Y. H. Lee),김영호(Y. H. Kim) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
The purpose of this study was to investigate the characteristics between EMG timing of muscle contraction and motor impairment in chronic hemiplegic stroke patients. Delay time and co-contraction of 4 patients who had stroke less than 3 years were measured during isometric wrist flexion and extension along the 3 seconds beep signal. Onset and offset of muscle contraction were significantly delayed on the more affected sides than control sides. Offset was significantly delayed than the onset on the affected sides in wrist flexion. Also, recruitment of antagonist was larger than agonist on the affected sides. Co-contraction ratio on the affected side was significantly smaller than control sides in wrist flexion. In affected sides, Fugl-Meyer motor assessment(FMA) shows the correlation of onset delay in wrist flexion and extension. However, co-contraction ratio correlated with FMA in wrist flexion. EMG assessment is likely to be useful outcome measure and provide insights into mechanism for motor recovery in stroke patients.