Takeover safety draws increasing attention in the intelligent transportation as the new energy vehicles with cutting-edge autopilot capabilities vigorously blossom on the road.Despite recent studies highlighting the i...Takeover safety draws increasing attention in the intelligent transportation as the new energy vehicles with cutting-edge autopilot capabilities vigorously blossom on the road.Despite recent studies highlighting the importance of drivers’emotions in takeover safety,the lack of emotion-aware takeover datasets hinders further investigation,thereby constraining potential applications in this field.To this end,we introduce ViE-Take,the first Vision-driven(Vision is used since it constitutes the most cost-effective and user-friendly solution for commercial driver monitor systems)dataset for exploring the Emotional landscape in Takeovers of autonomous driving.ViE-Take enables a comprehensive exploration of the impact of emotions on drivers’takeover performance through 3 key attributes:multi-source emotion elicitation,multi-modal driver data collection,and multi-dimensional emotion annotations.To aid the use of ViE-Take,we provide 4 deep models(corresponding to 4 prevalent learning strategies)for predicting 3 different aspects of drivers’takeover performance(readiness,reaction time,and quality).These models offer benefits for various downstream tasks,such as driver emotion recognition and regulation for automobile manufacturers.Initial analysis and experiments conducted on ViE-Take indicate that(a)emotions have diverse impacts on takeover performance,some of which are counterintuitive;(b)highly expressive social media clips,despite their brevity,prove effective in eliciting emotions(a foundation for emotion regulation);and(c)predicting takeover performance solely through deep learning on vision data not only is feasible but also holds great potential.展开更多
Many multi-story or highrise buildings consisting of a number of identical stories are usually considered as periodic spring-mass systems. The general expressions of natural frequencies, mode shapes, slopes and curvat...Many multi-story or highrise buildings consisting of a number of identical stories are usually considered as periodic spring-mass systems. The general expressions of natural frequencies, mode shapes, slopes and curvatures of mode shapes of the periodic spring-mass system by utilizing the periodic structure theory are derived in this paper. The sensitivities of these mode parameters with respect to structural damages, which do not depend on the physical parameters of the original structures, are obtained. Based on the sensitivity analysis of these mode parameters, a two-stage method is proposed to localize and quantify damages of multi-story or highrise buildings. The slopes and curvatures of mode shapes, which are highly sensitive to local damages, are used to localize the damages. Subsequently, the limited measured natural frequencies, which have a better accuracy than the other mode parameters, are used to quantify the extent of damages within the potential damaged locations. The experimental results of a 3-story experimental building demonstrate that the single or multiple damages of buildings, either slight or severe, can be correctly localized by using only the slope or curvature of mode shape in one of the lower modes, in which the change of natural frequency is the largest, and can be accurately quantified by the limited measured natural frequencies with noise pollution.展开更多
基金supported by the National Natural Science Foundation of China(no.62072153)the Anhui Provincial Key Technologies R&D Program(no.2022h11020015)the 111 Center(no.B14025).
摘要Takeover safety draws increasing attention in the intelligent transportation as the new energy vehicles with cutting-edge autopilot capabilities vigorously blossom on the road.Despite recent studies highlighting the importance of drivers’emotions in takeover safety,the lack of emotion-aware takeover datasets hinders further investigation,thereby constraining potential applications in this field.To this end,we introduce ViE-Take,the first Vision-driven(Vision is used since it constitutes the most cost-effective and user-friendly solution for commercial driver monitor systems)dataset for exploring the Emotional landscape in Takeovers of autonomous driving.ViE-Take enables a comprehensive exploration of the impact of emotions on drivers’takeover performance through 3 key attributes:multi-source emotion elicitation,multi-modal driver data collection,and multi-dimensional emotion annotations.To aid the use of ViE-Take,we provide 4 deep models(corresponding to 4 prevalent learning strategies)for predicting 3 different aspects of drivers’takeover performance(readiness,reaction time,and quality).These models offer benefits for various downstream tasks,such as driver emotion recognition and regulation for automobile manufacturers.Initial analysis and experiments conducted on ViE-Take indicate that(a)emotions have diverse impacts on takeover performance,some of which are counterintuitive;(b)highly expressive social media clips,despite their brevity,prove effective in eliciting emotions(a foundation for emotion regulation);and(c)predicting takeover performance solely through deep learning on vision data not only is feasible but also holds great potential.
基金Project supported by the National Natural Science Foundation of China (No. 50378041) Specialized Research Fund for Doctoral Programs of Higher Education (No. 20030487016).
摘要Many multi-story or highrise buildings consisting of a number of identical stories are usually considered as periodic spring-mass systems. The general expressions of natural frequencies, mode shapes, slopes and curvatures of mode shapes of the periodic spring-mass system by utilizing the periodic structure theory are derived in this paper. The sensitivities of these mode parameters with respect to structural damages, which do not depend on the physical parameters of the original structures, are obtained. Based on the sensitivity analysis of these mode parameters, a two-stage method is proposed to localize and quantify damages of multi-story or highrise buildings. The slopes and curvatures of mode shapes, which are highly sensitive to local damages, are used to localize the damages. Subsequently, the limited measured natural frequencies, which have a better accuracy than the other mode parameters, are used to quantify the extent of damages within the potential damaged locations. The experimental results of a 3-story experimental building demonstrate that the single or multiple damages of buildings, either slight or severe, can be correctly localized by using only the slope or curvature of mode shape in one of the lower modes, in which the change of natural frequency is the largest, and can be accurately quantified by the limited measured natural frequencies with noise pollution.