The awareness detection in patients with disorders of consciousness currently relies on behavioral observations and CRS-R tests,however,the misdiagnosis rates have been relatively high.In this study,we applied brain-c...The awareness detection in patients with disorders of consciousness currently relies on behavioral observations and CRS-R tests,however,the misdiagnosis rates have been relatively high.In this study,we applied brain-computer interface(BCI)to awareness detection with a passive auditory stimulation paradigm.12 subjects with normal hearing were invited to collect electroencephalogram(EEG)based on a BCI communication system,in which EEG signals are transmitted wirelessly.After necessary preprocessing,RBF-SVM and EEGNet were used for algorithm realization and analysis.For a single subject,RBF-SVM can distinguish his(her)name stimuli awareness with classification accuracies ranging from 60-95%.EEGNet was used to learn all subjects'data and improved accuracy to 78.04%for characteristics finding and model generalization.Moreover,we completed the supplementary analysis work from the time domain and time-frequency domain.This study applied BCI communication to human awareness detection,proposed a passive auditory paradigm,and proved the effectiveness,which could be an inspiration for brain,mental or physical diseases diagnosis and detection.展开更多
Bedding orientation measurement is a remote sensing application used in the field of geology, but the results are often unsatisfactory when the bed is dislocated along the strike direction. This paper proposes a new m...Bedding orientation measurement is a remote sensing application used in the field of geology, but the results are often unsatisfactory when the bed is dislocated along the strike direction. This paper proposes a new method called multiple-line method that is designed to improve bedding orientation measurement. This technique uses the bed as a vector, and fits the vectors as a plane to obtain the bedding orientation. This study employs the case of Yili Basin and measures 25 bedding orientations using the multiple-point and multiple-line methods, respectively. The result shows that the errors from the multiple-line method are mostly smaller than those from the multiple-point method when a bed is discontinuous.展开更多
An efficient synthesis of （E）-alken-1,2,3-triboronates form readily available propargylic carbonates is described. The reaction enjoys excellent regio- and E-selectivity and many synthetically useful functional grou...An efficient synthesis of （E）-alken-1,2,3-triboronates form readily available propargylic carbonates is described. The reaction enjoys excellent regio- and E-selectivity and many synthetically useful functional groups can be tolerated. Based on mechanistic studies, a two-step mechanism via 1,2-allenyl boronate intermediate is proposed.展开更多
基金supported by the Science and Technology Commission of Shanghai Municipality(STCSM)Research Fund(21JC1405300)to Fan Minthe National Key Research and Development Program of China(2018YFC0831102)sponsored by the Shanghai Key Research Laboratory of NSAI。
文摘The awareness detection in patients with disorders of consciousness currently relies on behavioral observations and CRS-R tests,however,the misdiagnosis rates have been relatively high.In this study,we applied brain-computer interface(BCI)to awareness detection with a passive auditory stimulation paradigm.12 subjects with normal hearing were invited to collect electroencephalogram(EEG)based on a BCI communication system,in which EEG signals are transmitted wirelessly.After necessary preprocessing,RBF-SVM and EEGNet were used for algorithm realization and analysis.For a single subject,RBF-SVM can distinguish his(her)name stimuli awareness with classification accuracies ranging from 60-95%.EEGNet was used to learn all subjects'data and improved accuracy to 78.04%for characteristics finding and model generalization.Moreover,we completed the supplementary analysis work from the time domain and time-frequency domain.This study applied BCI communication to human awareness detection,proposed a passive auditory paradigm,and proved the effectiveness,which could be an inspiration for brain,mental or physical diseases diagnosis and detection.
基金in part supported by the National Natural Science Foundation of China(Nos.41572316,41102131)the Guangdong Natural Science Foundation(No.2015A030313193)
文摘Bedding orientation measurement is a remote sensing application used in the field of geology, but the results are often unsatisfactory when the bed is dislocated along the strike direction. This paper proposes a new method called multiple-line method that is designed to improve bedding orientation measurement. This technique uses the bed as a vector, and fits the vectors as a plane to obtain the bedding orientation. This study employs the case of Yili Basin and measures 25 bedding orientations using the multiple-point and multiple-line methods, respectively. The result shows that the errors from the multiple-line method are mostly smaller than those from the multiple-point method when a bed is discontinuous.
文摘An efficient synthesis of （E）-alken-1,2,3-triboronates form readily available propargylic carbonates is described. The reaction enjoys excellent regio- and E-selectivity and many synthetically useful functional groups can be tolerated. Based on mechanistic studies, a two-step mechanism via 1,2-allenyl boronate intermediate is proposed.
