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浏览/检索结果: 共5条，第1-5条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Top quark forward-backward asymmetry in the little Higgs model 期刊论文 2016, 2016 郭星导; 张印杰; 赵树民; 冯太傅; 袁煦浩; 李学潜; GUO Xing-Dao; ZHANG Yin-Jie; ZHAO Shu-Min; FENG Tai-Fu; YUAN Xu-Hao; LI Xue-Qian 收藏  |  浏览/下载：3/0 Top quark forward-backward asymmetry in the little Higgs model 期刊论文 CHINESE PHYSICS C, 2014, 卷号: 38, 期号: 11 作者:  Guo Xing-Dao[1];  Zhang Yin-Jie[2];  Zhao Shu-Min[3];  Feng Tai-Fu[4];  Yuan Xu-Hao[5] 收藏  |  浏览/下载：2/0  |  提交时间：2019/12/21 forward-backward asymmetry  little Higgs model  one-loop diagram  Feynman amplitude   Signal Singularity Detection based on the Hermitian Wavelet for Fault Diagnosis 会议论文 International Conference on Cloud Computing and Big Data (CCBD), Wuhan, PEOPLES R CHINA, 2014-01-01 作者:  Chen, Jian;  Li, Wen;  Li, Qingdong;  Li, Peng;  Lian, Chengbin 收藏  |  浏览/下载：3/0  |  提交时间：2020/01/06 signal singularity  hermitian wavelet  time-scale analysis  amplitude diagram  phase diagram   Optical axis stabilization of semi-strapdown seeker based on disturbance observer (EI CONFERENCE) 会议论文 2011 International Conference on Information and Automation, ICIA 2011, June 6, 2011 - June 8, 2011, Shenzhen, China Sun G.; Zhu M.; Yin S.; Jia H. 收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25 Based on the kinematics of semi-strapdown seeker  the framework coordinate of the seeker is established. The optical axis stability equation of semi-strapdown seeker is deduced by using attitude transformation matrix. Then  the stability control principle block diagram of semi-strapdown seeker is shown based on the stability equation. The main factors that influence the stabilization precision are pointed out  such as friction disturbance  velocity-measuring noise and missile disturbance. In order to improve the stabilization precision  disturbance observer was proposed in semi-strapdown seeker stability control. The low frequency external disturbance and high frequency velocity measurement noise are effectively restrained by the disturbance observer as shown in hardware-in-loop simulation  and optical axis stabilization precision is improved nearly 20 times and 5 times due to two different frequencies with same amplitude. 2011 IEEE.   Self-adaptive threshold canny operator in color image edge detection (EI CONFERENCE) 会议论文 2009 2nd International Congress on Image and Signal Processing, CISP'09, October 17, 2009 - October 19, 2009, Tianjin, China Luo T.; Zheng X.-F.; Ding T.-F. 收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25 It needs to set the two thresholds of classical Canny Operator manually  which confined this algorithm. A lot of research on adaptive thresholds choice method has been done to conquer this shortcoming. Based on the gradient histogram  which is studied constantly in the past  a method of gradient histogram difference diagram with adaptive image classification techniques is proposed in this paper. It automatically sets the two thresholds  and avoids disconnected or false edges in detection. Experiments prove that the method is threshold-adaptive and the edge detection performs well in color image whose larger gradient amplitude pixels are mainly located in the edges between the target and background. 2009 IEEE.