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사각보행기의 고속 보행제어를 위한 동적 모델링 및 해석
강성철,유홍희,김문상,이교일,Kang, Sung-Chul,Yoo, Hong-Hee,Kim, Mun-Sang,Lee, Kyo-Il 대한기계학회 1997 大韓機械學會論文集A Vol.21 No.5
In order to control a dynamic gait of quadrupedal walking robot, the equations of motion of the whole mechanism are required. In this research, the equations of motion are formulated analytically using Kane's dynamic approach. As a dynamic gait model, a trot gait has been adopted. The degree of freedom of whole mechanism could be reduced to 7 by idealizing the kinematic feature of the trot gait. Using the equations of motion formulated, the results of the redundant-joint torque analysis and the simulation of dynamic walking motion are presented.
반도체 사진공정에서 실리콘 웨이퍼 위의 Silylated Resist의 Fourier 변환 적외선 분광분석
강성철,김수종,손민영,박춘근,Kang, Sung Chul,Kim, Su Jong,Son, Min Young,Park, Chun Geun 한국분석과학회 1992 분석과학 Vol.5 No.4
본 논문에서는 FT-IR 분광분석법을 이용하여 여러 가지 반응조건에서 기체상 silylation 반응에 의해 생성된 silylated layer의 depth를 비파괴적으로 정량하는 방법을 제안하였다. Silylated layer의 depth는 FT-IR 스펙트럼의 특성 봉우리들(Si-O-ph, Si-C, Si-H)의 흡광도를 바탕 스펙트럼 공제법으로 측정하여 SEM의 두께 측정치와 비교하여 정량하였다. FT-IR 분광분석법을 이용한 Silylated layer의 depth 분석은 비파괴적이고 정량적인 방법으로, 이 방법은 silylation process window를 설정하는 데 적합하다는 것을 알았다. Using FT-IR, we determined the depth of silylated layers produced from various gas-phase-silylation conditions was proposed by using Fourier Transform Infrared (FT-IR) spectroscopic analysis. The depth of silylated layer was determined from absorbance measurments of the significant peaks (Si-O-ph, Si-C, Si-H) of FT-IR spectra with background spectrum subtraction method. And the results were compared with thickness measurments of SEM. The results were well agree with SEM. It found to be well suited for determining silylation process window.
사례분석을 통한 소나무림에서의 풍속과 실효습도 변화에 의한 대형산불 위험예보
강성철 ( Sung-chul Kang ),원명수 ( Myoung-soo Won ),윤석희 ( Suk-hee Yoon ) 한국지리정보학회 2016 한국지리정보학회지 Vol.19 No.4
In this study, we developed a large fire forecasting system using critical weather conditions, such as strong winds and effective humidity. We incorporated information on forest type prior to large fires using an incident case study. The case study includes thirty-seven large fires covering more than 100 ha of damaged area over the last 20 years. Dangerous large fire regions were identified as areas of more than 30 ha of Korean red pine and the surrounding two kilometers. Large fires occur when wind speeds average 5.3 m/s with a maximum of 11.6 m/s and standard deviation of 2.5 m/s. Effective humidity for large fires average 30% with a minimum of 13% and standard deviation of 14.5%. In dangerous Korean red pine stand areas, the large fire `Watch` level is issued when effective humidity is 30-45% for more than two days and average wind speed is 7-10 m/s. The `Warning` level is issued when effective humidity is less than 30% for more than two days and average wind speed is more than 11 m/s. Therefore, from now on, the large fire forecasting system can be used effectively for forest fire prevention activities based on a selection and concentration strategy in dangerous large fire regions using severe weather conditions.