目的分析平均气温、降雨量、相对湿度与5岁以下儿童轮状病毒腹泻之间关联性,为科学防治提供理论依据。方法收集杭州市萧山区2005—2019年轮状病毒腹泻资料及同期气象资料,采用分布滞后非线性模型评价气象因素与儿童轮状病毒腹泻的关联,...目的分析平均气温、降雨量、相对湿度与5岁以下儿童轮状病毒腹泻之间关联性,为科学防治提供理论依据。方法收集杭州市萧山区2005—2019年轮状病毒腹泻资料及同期气象资料,采用分布滞后非线性模型评价气象因素与儿童轮状病毒腹泻的关联,并按性别、年龄分层分析。结果低温(-3℃)和低相对湿度(46%)与轮状病毒腹泻呈正关联[RR值(95%CI)分别为1.60(1.31~1.96)、1.22(1.13~1.32)]。降雨增多,发病人数下降,相对于降雨量为10 mm,25 mm RR值(95%CI)=0.66(0.60~0.72)。分层分析显示,女童比男童对相对湿度更为敏感。相对于0~2岁儿童,3~5岁儿童发病数更易受气温、相对湿度影响。极端降雨(>50 mm),随雨量的增大,3~5岁儿童发病人数持续下降,而0~2岁则上升。结论低温、低降雨量和低相对湿度增加儿童轮状病毒腹泻发病风险,且存在性别、年龄差异。应关注极端天气对儿童健康影响。展开更多
In gesture recognition,static gestures,dynamic gestures and trajectory gestures are collectively known as multi-modal gestures.To solve the existing problem in different recognition methods for different modal gesture...In gesture recognition,static gestures,dynamic gestures and trajectory gestures are collectively known as multi-modal gestures.To solve the existing problem in different recognition methods for different modal gestures,a unified recognition algorithm is proposed.The angle change data of the finger joints and the movement of the centroid of the hand were acquired respectively by data glove and Kinect.Through the preprocessing of the multi-source heterogeneous data,all hand gestures were considered as curves while solving hand shaking,and a uniform hand gesture recognition algorithm was established to calculate the Pearson correlation coefficient between hand gestures for gesture recognition.In this way,complex gesture recognition was transformed into the problem of a simple comparison of curves similarities.The main innovations:1) Aiming at solving the problem of multi-modal gesture recognition,an unified recognition model and a new algorithm is proposed;2) The Pearson correlation coefficient for the first time to construct the gesture similarity operator is improved.By testing 50 kinds of gestures,the experimental results showed that the method presented could cope with intricate gesture interaction with the 97.7% recognition rate.展开更多
文摘目的分析平均气温、降雨量、相对湿度与5岁以下儿童轮状病毒腹泻之间关联性,为科学防治提供理论依据。方法收集杭州市萧山区2005—2019年轮状病毒腹泻资料及同期气象资料,采用分布滞后非线性模型评价气象因素与儿童轮状病毒腹泻的关联,并按性别、年龄分层分析。结果低温(-3℃)和低相对湿度(46%)与轮状病毒腹泻呈正关联[RR值(95%CI)分别为1.60(1.31~1.96)、1.22(1.13~1.32)]。降雨增多,发病人数下降,相对于降雨量为10 mm,25 mm RR值(95%CI)=0.66(0.60~0.72)。分层分析显示,女童比男童对相对湿度更为敏感。相对于0~2岁儿童,3~5岁儿童发病数更易受气温、相对湿度影响。极端降雨(>50 mm),随雨量的增大,3~5岁儿童发病人数持续下降,而0~2岁则上升。结论低温、低降雨量和低相对湿度增加儿童轮状病毒腹泻发病风险,且存在性别、年龄差异。应关注极端天气对儿童健康影响。
基金supported by the National Key R&D Program of China(2018YFB1004901)the National Natural Science Foundation of China(61472163,61472232)
文摘In gesture recognition,static gestures,dynamic gestures and trajectory gestures are collectively known as multi-modal gestures.To solve the existing problem in different recognition methods for different modal gestures,a unified recognition algorithm is proposed.The angle change data of the finger joints and the movement of the centroid of the hand were acquired respectively by data glove and Kinect.Through the preprocessing of the multi-source heterogeneous data,all hand gestures were considered as curves while solving hand shaking,and a uniform hand gesture recognition algorithm was established to calculate the Pearson correlation coefficient between hand gestures for gesture recognition.In this way,complex gesture recognition was transformed into the problem of a simple comparison of curves similarities.The main innovations:1) Aiming at solving the problem of multi-modal gesture recognition,an unified recognition model and a new algorithm is proposed;2) The Pearson correlation coefficient for the first time to construct the gesture similarity operator is improved.By testing 50 kinds of gestures,the experimental results showed that the method presented could cope with intricate gesture interaction with the 97.7% recognition rate.
