http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Detection of Distracted State Based on Head Posture and Facial Expression
Tomoki Washizu,Kazuhito Sato,Yuma Matsui,Hanwool Woo,Hirokazu Madokoro,Sakura Kadowaki 제어로봇시스템학회 2019 제어로봇시스템학회 국제학술대회 논문집 Vol.2019 No.10
Research and development of automatic driving have been progressing actively. Level 3 autonomous driving requires shifting of driving activity between the system and a driver. Such shifting poses high risks of a severe traffic accident if a driver is in a distracted state. Nevertheless, no distracted state detection method has been established. For our earlier study, research was conducted to extract characteristic driving behavior patterns in distracted states by quantifying eye movement. Results indicated a challenging task for further development: detecting gaze information with high accuracy. For this study, time-series changes of head posture and facial expressions in a driving concentration state and distracted state are quantified using hierarchical growth type recurrent SOM and a U-matrix. We assess the possibility of detecting driving behavior patterns that involve head posture and facial expressions and which characterize a distracted driver state.
Hirose, Yuko,Kakita, Mitsuko,Washizu, Toshiyuki,Matsugo, Seiichi Korean Society of Photoscience 2002 Journal of Photosciences Vol.9 No.2
Recently, much attention has been paid to the physiological functions of flavonoids associated with their antioxidant properties. However, there was a lack of information on the molecular mechanism at which flavonoids play the antioxidative role. We have already studied on the oxidation of quercetin with hydrogen peroxide and sodium hypochlorite in alcoholic aqueous solution and determined the oxidation products. Through the structural analysis of the oxidation products, it was clarified that the hydroxyl group at C-3 in the C ring plays the important role in the antioxidative action of quercetin. Successively, rutin and (+)-catechin were oxidized with sodium hypochlorite and their mono- and di-chlorinated derivatives were obtained. These facts indicate that these flavonoids can directly scavenge hypochlorous acid and the active site in this scavenging reaction is not the hydroxyl group at C-3.