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499 results on '"Jiang, Huijun"'

120. Human action tracking design of neural network algorithm based on GA-PSO in physical training

Author

Zuo Xin, Leng Xinke, and Jiang Huijun

Subjects
Artificial neural network, Computer Networks and Communications, business.industry, Computer science, Feature extraction, Optical flow, Particle swarm optimization, 020206 networking & telecommunications, 02 engineering and technology, Genetic operator, Universality (dynamical systems), 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, Artificial intelligence, business, Software
Abstract

In order to solve human action recognition algorithm in traditional physical training, the problem of some kind of action recognition without universality is usually solved emphatically, and a recognition system aimed at human action tracking in physical training is proposed. Firstly, local feature description of human action in physical training based on self-similarity matrix is constructed by using generalized self-similarity concept changed along with time and local feature extraction methods of optical flow field of spatio-temporal interest point; secondly, a new neural network training algorithm of particle swarm optimization (PSO) with self-adaptive genetic operator is proposed. Through probability control, at the same time of using PSO algorithm to optimize neural network, selection, intersection, variation and other genetic operation are implemented for optional particles adaptively to realize promotion of algorithm performance; simulation experiment indicates that proposed scheme can obviously improve algorithm efficiency of human action recognition and recognition accuracy in physical training.

Published
2018

126. Biosafety level 3 laboratory for autopsies of patients with severe acute respiratory syndrome: principles, practices, and prospects

Author

Li, Ling, Gu, Jiang, Shi, Xicheng, Gong, Encong, Li, Xingwang, Shao, Hongquan, Shi, Xueying, Jiang, Huijun, Gao, Xiaoqiang, Cheng, Daiyun, Guo, Lizhu, Wang Hao, Shi, Xiaohong, Wang, Peizhi, Zhang, Qianying, and Shen, Bing

Subjects
Severe acute respiratory syndrome -- Risk factors, Severe acute respiratory syndrome -- Diagnosis, Severe acute respiratory syndrome -- Care and treatment, Autopsy -- Health aspects, Health, Health care industry
Published
2005

129. Nonequilibrium Dynamics of Chemically Active Particles.

Author

Jiang, Huijun and Hou, Zhonghuai

Subjects
*NONEQUILIBRIUM statistical mechanics, *COLLECTIVE behavior, *KINETIC energy, *GRADUATE education, *PERSONALITY studies, *PARTICLE dynamics
Abstract

Comprehensive Summary: Chemically active motion is ubiquitous in many nature and artificial systems where each unit can move directionally by converting chemical energy into kinetic energy. Since the systems are driven by activity far from equilibrium, many dynamical behaviors forbidden in equilibrium systems may be induced. Nonequilibrium dynamics of such systems is then a hot multidisciplinary topic with great challenges. Here, we review our recent theoretical advances in some fundamental problems at the single active particle level, the collective behavior level, as well as in systems where active particles act as baths. What is the most favorite and original chemistry developed in your research group? We have focused on developments and applications of non‐equilibrium statistical methods. We are active in developing multi‐scale theories as well as modeling methods to solve puzzles in physical, chemical as well as biological complex systems. Study of dynamic behaviors of active systems as demonstrated in this review are some of the most exciting works in my group. How do you get into this specific field? Could you please share some experiences with our readers? When I was an undergraduate student, I encountered the fascinating field of nonlinear dynamics, being deeply attracted by the interesting and beautiful concepts like fractal, soliton and chaos. Later during my graduate study under the supervision of Prof. Houwen Xin, I began my research work in nonlinear chemistry, which brought me into the interdisciplinary field of complex system. Non‐equilibrium statistical mechanics can provide powerful tools and new insights into these complex systems, finding brilliant solutions for the puzzles, making the problems simple, but not simpler. Who influences you mostly in your life? My supervisor Prof. Xin is no doubt the most influential person in my life. His knowledge and insights in both research and life have been a great inspiration to me even till today. What is the most important personality for scientific research? I would say the most important one is certainly curiosity, the never‐ending thirst of truth. Other personalities such as dedication and hardworking are also indispensable, as they may take you through a period of research journey, but it is your curiosity that drives you to devote into research for a life time. What are your hobbies? What's your favorite book(s)? One of my major hobby is of course acquiring new knowledge such as watching online lectures, such as MIT open courses at OpenCourseWare, again driven by my inexhaustible curiosity. Apart from that I like playing Go in my spare time. How do you keep balance between research and family? Well I don't think there is a 'balance' but rather/instead a positive feedback loop. Research and family are both things I enjoy most, so I guess I'm just dedicated to one identity at a time which lightens me in the other. [ABSTRACT FROM AUTHOR]

Published
2022
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134. Surface Engineering on Commercial Cu Foil for Steering C2H4/CH4Ratio in CO2Electroreduction

Author

Ling, Peiquan, Liu, Yinghuan, Wang, Zhiqiang, Li, Li, Hu, Jun, Zhu, Junfa, Yan, Wensheng, Jiang, Huijun, Hou, Zhonghuai, Sun, Yongfu, and Xie, Yi

Abstract

Designing catalysts with high selectivity toward C2products in CO2electroreduction is crucial to energy storage and sustainable development. Here, we propose a Cu foil kinetic model with abundant nanocavities possessing higher reaction rate constant kto steer the ratio of C2H4to the competing CH4during CO2electroreduction. Chemical kinetic simulation demonstrates that the nanocavities could enrich the adsorbed CO surface concentration (θCOad), while the higher khelps to lower the C–C coupling barrier for CO intermediates, thus favoring the formation of C2H4. The commercial Cu foil treated with cyclic voltammetry is used to match this model, displaying a remarkable C2H4/CH4ratio of 4.11, which is 18 times larger than that on the pristine Cu foil. This work offers a handy strategy for surface modification and provides new insights into the C–C coupling and the C2H4selectivity in terms of mass transfer flux and energy barrier.

Published
2022
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