In 2004, Guo Qiang received his Ph.D. from the Department of Applied Mathematics of Dalian University of Technology. In 2006, he was appointed as an associate professor. Thirty-five papers have been published, including 8 papers retrieved by SCI and 0/0 by EI, including authoritative journals at home and abroad such as Dutch Physics A, International Modern Physics C and China Physics Express. The representative papers in recent three years are as follows:

Liu Jianguo Guo Qiang *. Improved BFGS beam algorithm based on approximate subgradient. Applied mathematics. & Informatics 28 (5-6) (2010)1239-1248. Guo Qiang, Liu Jianguo. Clustering effect of user-object binary network in personalized recommendation. International Journal of Modern Physics C 21(7) (2010) 891-901. (SCI:644SL) Liu Jianguo *, Zhou Tao, Bing wang hong, Zhang Yicheng, Guo Qiang. Degree correlation of binary network in personalized recommendation. J. Mod in it. phys . C 2 1( 1) 137- 147(20 10)。 (SCI: 552DM) Liu Jianguo *, Zhou Tao, Bing wang hong, Zhang Yicheng and Guo Qiang. Influence of user preference on personalized recommendation. J. Mod in it. phys . C 20( 12) 1925- 1932(2009)。 (SCI: 54 1OI), Zhou Tao, Wen, Bing, Zhao Ming, Growing Scale-free Small World Network with Adjustable Matching Coefficient, physica371814-822. 2006.(SCI:093 WC； EI:0639 10 128450), Liu Jianguo, Xing, Yao Yuhua, Improving the Synchronization of Scale-free Networks, China. Physics, Ritter. 24 (8) 2437-2440 2007. (SCI:198WF), Liu Jianguo, Bing, Xing, Yao Yuhua, Mobile Public Opinion Communication on Scale-free Network, China. Physics, Ritter. 25(2) 773-775 2008.(SCI:264UT) Guo Qiang, Liu Jianguo, Bing-wang hong, High-precision collaborative filtering algorithm based on new user similarity definition, Frontier of China Computer Science 3(3) 4 17-420, (2009). (EI:200950 12547747), Liu Jianguo, Ming-Zhong Jun, scale-free network model under external pressure, int.j. Modeling, Identification and Control 3( 1) 79-82. (ei: 2008211273809) Liu Jianguo, Zhou Tao, Bing-wang hong, Guo Qiang, Structural Effects of Synchronization in Scale-free Networks, int.j.mod. Physics c18 (7)1087-1094 2007. (SCI:363LZ), Zhao, Dang Yanzhong, Zhong, Weighted Network Properties of Basic Natural Science Research in China, Physics A 377 302-3 14, 2007. (SCI:138JW; EI:0704 1038 1836), Xing-,capacity optimization model of expressway toll plaza, Dalian1401-kloc-0/404 2006, the 6th World Conference on Intelligent Control and Automation. (ei: 071510541434) Guo Qiang, Liu Jianguo, Global Convergence of Modified BFGS Method for Unconstrained Nonconvex Minimization, Journal of Mathematical Applications. Compare. 23 311-319 2007. (ei: 20072310639967) Guo Qiang, Liu Jianguo, Global Convergence of Two Modified BFGS Methods, Journal of Mathematical Applications. Compare. 24 (1-2) 325-3312007. (ei: 070410385600) Guo Qiang, Liu Jianguo, Dan-wang hong, a modified BFGS method and its superlinear convergence in nonconvex minimization under general line search rules, J. mathmatics Compare. 28 435-446 2008.(EI:200833 1 1448576)