作者机构：
[傅喜泉; 唐杨林; 施晓辉; 谭超] Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education, College of Computer Science and Electronic Engineering, Hunan University, Changsha, China;[邓杨保] College of Communication and Electronic Engineering, Hunan City University, Yiyang, Hunan, China;[谭超] School of Information and Electrical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
通讯机构：
[Fu, X.-Q.] K;Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education, College of Computer Science and Electronic Engineering, Hunan University, Changsha, China
作者机构：
[沈连丰; 邓杨保] National Mobile Communications Research Laboratory, Southeast University, Nanjing, China;[张光富; 田野; 熊翠秀; 邓杨保; 邓曙光] College of Communication and Electronic Engineering, Hunan City University, Yiyang, China
通讯机构：
National Mobile Communications Research Laboratory, Southeast University, Nanjing, China
摘要：
To overcome the shortcomings of the single-shot autocorrelation SSA where only one pulse width is obtained when the SSA is applied to measure the pulse width of ultrashort laser pulses a modified SSA for measuring the spatiotemporal characteristics of ultrashort laser pulses at different spatial positions is proposed. The spatiotemporal characteristics of femtosecond laser pulses output from the Ti sapphire regenerative amplifier system are experimentally measured by the proposed method. It was found that the complex spatial characteristics are measured accurately.The pulse widths at different spatial positions are various which obey the Gaussian distribution.The pulse width at the same spatial position becomes narrow with the increase in input average power when femtosecond laser pulses pass through a carbon disulfide CS2 nonlinear medium.The experimental results verify that the proposed method is valid for measuring the spatiotemporal characteristics of ultrashort laser pulses at different spatial positions.
期刊：
Journal of Computational Information Systems,2014年10(22):9619-9627 ISSN：1553-9105
通讯作者：
Chen, Zhigang
作者机构：
[Jiaqi Liu; Zhigang Chen; Fang Cui; Weimin Chen] School of Software, Central South University, Changsha , China;[Weimin Chen] School of Communication and Information Engineering, Hunan City University, Yiyang , China
通讯机构：
School of Software, Central South University, Changsha, China
期刊：
Journal of Chemical and Pharmaceutical Research,2014年6(2):580-588 ISSN：0975-7384
作者机构：
[Tu, Li; Zhang, Chi] School of Information Science and Engineering, Hunan City University, Yiyang, Hunan, China;[Xie, Chuan] Department of Fundamental Medical, Clinical Laboratory, Yiyang Medical College, Yiyang, Hunan, China
摘要：
The stability of discrete Hopfield neural networks not only has an important theoretical significance, but also is the foundation of the applications of the networks. Security of the algorithm is discussed.ANN originated has been applied in all aspects of life and production, especially in intelligent control, nonlinear function approximation and environmental parameters forecast assessment. Be similar to the human's brain mechanism, a neural network complete the tasks by the process of learning (training) and use (associative memories). Normally, the neural network can be assured used only after thorough study. According to the dynamic characteristics of the interconnections between nerve cells in Hopfield network, this paper discusses the application of Hopfield network model in gene diagnosis, points out the network problems and puts forward the solutions.
期刊：
International Journal of Distributed Sensor Networks,2014年10(1) ISSN：1550-1477
通讯作者：
Liao, Zhiping
作者机构：
[Liao, Zhiping; Xi, Shengfeng] Hunan City Univ, Informat Sci & Engn Coll, Yiyang 413000, Peoples R China.;[Liu, Song] Hunan City Univ, Commercial Coll, Yiyang 413000, Peoples R China.
通讯机构：
[Liao, Zhiping] H;Hunan City Univ, Informat Sci & Engn Coll, Yiyang 413000, Peoples R China.
摘要：
Message propagation is a primary means to locate resources in current unstructured peer-to-peer (P2P) systems and how to reduce effectively the redundant messages of propagation while keeping its high network coverage is what many researchers go in for in this field. In this paper, we propose the algorithm of LMPR, a scheme of improved MPR for message propagation in distributed unstructured P2P system. Based on analyzing the process and message redundancy of MPR, this paper proposes to add to such scheme a mechanism of specified relay-list to reduce further the number of its retransmitting of message. By attaching to each relay-peer a relay-list with peers it will relay message to, the scheme can assure that in the view of each decision-peer a broadcast message can be dispatched and only be dispatched once to every neighbor peer within 2 hops of it. Simulation results show that the scheme of LMPR has better performance than that of MPR in message redundancy, network overhead, and fluctuation brought to the system.
期刊：
Mathematical Problems in Engineering,2014年2014 ISSN：1024-123X
通讯作者：
Yang, G.(glyang@mail.ustc.edu.cn)
作者机构：
[Yang, Gelan] College of Information Science and Engineering, Hunan City University, Yiyang 413000, China;[Wu, Yue] Department of Electrical and Computer Engineering, Tufts University, Medford, MA 02155, United States;[Cao, Su-Qun] Faculty of Mechanical Engineering, Huaiyin Institute of Technology, Huai'an 223003, China
通讯机构：
College of Information Science and Engineering, Hunan City University, China
作者机构：
[李梦醒] School of Communication and Electronic Engineering, Hunan City University, Yiyang, Hunan, China;[贺康; 赵建; 杨梅; 冯全] Engineering College, Gansu Agricultural University, Lanzhou, China
作者机构：
[王涛] College of Information Science and Engineering, Hunan City University, Yiyang 413000, China;[雷婷] Department of Communication Engineering, Chengdu Technological University, Chengdu 611730, China;[王涛; 黎文伟] College of Information Science and Engineering, Hunan University, Changsha 410082, China
通讯机构：
College of Information Science and Engineering, Hunan City University, China
摘要：
Small-scale self-focusing (SF) causes rapid increase in the partial spatial intensity, breaking up the spatial profile of the beam into an intensity increasing zone (IZ) and a non-increasing zone (NIZ). We measure the evolutions of the pulse width at the IZ and NIZ with small-scale SF, and our results show that the pulse width at the IZ becomes narrower with increasing partial spatial intensity. The pulse width at the NIZ is almost unchanged with increasing laser power. We find that our experimental results are in good agreement with an approximate theoretical analysis.
期刊：
International Journal of Distributed Sensor Networks,2014年10(5) ISSN：1550-1477
通讯作者：
Yang, Gelan(glyang@mail.ustc.edu.cn)
作者机构：
[Yang, Gelan] College of Information Science and Engineering, Hunan City University, Yiyang, 413000, China;[Cao, Su-Qun] Faculty of Mechanical Engineering, Huaiyin Institute of Technology, Huai'an, 223003, China;[Jin, Yong; Le, Deguang] School of Computer Science and Engineering, Changshu Institute of Technology, Changshu, 215500, China
通讯机构：
[Gelan Yang] C;College of Information Science and Engineering, Hunan City University, Yiyang 413000, China
作者机构：
[李梦醒] School of Communication and Electronic Engineering, Hunan City University, Yiyang;Hunan;413000, China;[冯全; 杨梅; 赵建; 贺康] Engineering College, Gansu Agricultural University, Lanzhou;730070, China
期刊：
Lecture Notes in Electrical Engineering,2014年272(1):801-806 ISSN：1876-1100
通讯作者：
Zhou, L.(zhouwlibo@163.com)
作者机构：
[Zhou, Libo; Liu, Hean; Zhou, Minghui] Network Information Center, Hunan City University, Yiyang 413000, China;[Zhou, Libo; Liu, Hean; Zhou, Minghui] Hunan University of Science and Technology, Xiangtan 411201 Hunan, China
