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To simulate the working process of EPDM PSD of dual-pulse solid rocket motor from beginning to failure, we use a hyperelastic model with erergy limiter to model this working process. In traditional practice, the consistent tangent moduli of mechanical model is derived by analytic method, however, the analytic method is tedious and fallible. To solve this problem, we introduce numerical approximate method (complex-step derivative, which is proved to be of second-order for suitably small perturbation and does not suffer from inherent subtractive cancellations ) to derive the consistent tangent moduli, which is simple, robust, and efficient, and can be easily implemented into commercial finite element software. Finally, we simulate a case of unixial tension of a dumbbell-shape and compare the simulation results with the analytic results, a good agreement between the two kinds of results is observed.

This article reviews the development of humanistic psychology in China since the end of the Cultural Revolution in 1980, including the activities of Lin Fang, Liu Xiao-feng, Chen Wei-zheng, Chen Zhong-geng, FangYuan-chu, Li Guang-wei, Li Wen-tian, Li Zheng-tian, Ma Yutian, Qu Wei, Shao Wei, Shong Shu-wei, Wang X 0000V Deng-feng, Wang Xiao-ping, Wu Xiao-feng, Yu Yang, Zhang Qi-ming, Zhang Yi-bing, and the author. Translations of Maslow, Rogers, May, Fromm, and others were published in large editions, original works were written, courses were taught, radio programs broadcast, newspaper articles published, research undertaken, and personality theories debated. Through 1989 Maslow's books sold 557,900 copies. Two organizations were founded, the Guangzhou Institute of Humanistic Psychology and the Beijing Research Association of Healthy Personalities. The events of June 1989 slowed these developments, but they are still continuing and have important implications for the future of China.

Secure data fusion is an important application of wireless sensor network. Previous works are implemented by authentication among neighboring sensors. Considering that in many cases, data fusion event is both spatially and temporally correlated, this paper proposes a distributed and localized secure data fusion algorithm based on behavior trust. The security and reliability of the algorithm are implemented by statistical hypothesis test for matching the reading sequence of sensors and statistical characters of the data fusion event. The simulation results show the validity of the algorithm.