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Gap and Hook element Fig. 3 Pounding, restrainer device models The axial stiffness of the contact body is used as the stiffness of the spring K3, which is expressed as K3=EA/L, where E, A and L are modulus of elasticity, cross section area and length of the contactor element respectively [8].Damping coefficients C1 and C2 can be determined according to the restitution coefficient at normal and tangent directions by ; ; (1) Where M1, M2 ,masses of the two bodies in contact; e, restitution coefficient, range from 1 (elastic) to 0 (plastic);ξ, damping ratio according to restitution coefficient e, range from 0 to 1;ξ0, damping ratio of material of bearing,0.174;m, mass of bearing; ω,the basic frequency of bearing.
Acknowledgements This study is jointly supported by the National Natural Science Foundation of China (No.50708100), and partially by Basic Research Program of Institute of Mechanics Engineering China Earthquake Administration (No. 2010B07 and No. 2007B02).
Journal of Engineering Mechanics, Vol.124 (7), p.794 (1998) [9] ZHOU GL,LI XJ ,Q XJ.
Seismic response analysis of continuous rigid frame bridge considering canyon topography effects under incident SV waves [J].Earthquake Science, Vol.23(1),p.53-61 (2010)

But the impact of these process parameters on the material corrosion studied rarely.
Acknowledgment This work was financially supported by “the Natural Science Foundation for Young Scholars of Jiangsu Province, China(Grant No.
Science﹠Technology. 2009(12):92 [2] Jianfei Yu, Fuxing Gan, Long Hao.
Journal of Chinese Society For Corrosion and Protection. 2009, 29(6):481-483

It is well known that the cutting force is dependent on many factors, including material property, cutting tool geometry, and cutting parameter etc.
Acknowledgment It is a project supported by Program for New Century Excellent Talents in University (NCET) 2007, Graduate Independent Innovation Foundation of Shandong University (GIIFSDU, NO. yzc09062) and Shandong Provincial Natural Science Foundation, China (No.
Journal of Manufacturing Science and Engineering, 2008. 130(2): p. 021009-8

Research on temperature field of CFST member under solar radiation Junling Fan1, Hongcai Zheng1,a ,Qian Zhang, Man Ding1 ,Yan He1 1College of Mechanical and Electrical Engineering, Qingdao University of Science & Technology, Qingdao 266061, China azhcai88405@126.com Keywords: solar radiation, concrete filled steel tube (CFST), numerical simulation, experimental research, temperature field Abstract.
Fig.1 The photograph of experimental apparatus Table.1 Components of concrete Material Concrete Sand Stone Water Total Weight[kg] 446 577 1172 205 2400 Percent[%] 18.5 24.2 48.8 8.5 100 Results and Analysis As shown in figure 3a, after one night without sunlight and under the action of uniform temperature, at 6:00 am, the temperature field is close to evenly distribution.
Vol. 109(1983), p 1460 [7] L.H.Han, Yang H and S.L.Cheng: Advance in Structural Engineering- An International Journal .Vol. 5(2002), p123 [8] Z.F.Teng:Analysis on temperature field of concrete filled steel tube arch rib due to solar radiation(Hefei University of Technology,Hefei2009).
In Chinese [9]Y.Y.Li: The Study of Deformations and Internal Forces Caused by Temperature Variation in High-rise Reinforced Concrete Structures (Kunming University of Science and Technology, kunming2001).

Periodic Change of River Runoff Based on EMD-MES Xuehua Zhaoa, LiLi Anb College of Water Resources Science and Engineering, Taiyuan University of Technology, China 030024 azhaoxuehua@tyut.edu.cn, banli200666@sina.com Key words: Maximum entropy, Empirical mode decomposition, Annual runoff, Periodic analysis Abstract.
The Selection of Model Order The maximum entropy spectrum is theoretical spectrum of autoregressive process for material optimum fitting in the meaning of least-square, and the main period of spectral resolution depends on the taken order.
Acknowledgments This work is supported by the National Natural Science Foundation of China (Grant No. 40901018), and by Program for the Top Young Academic Leaders of Higher Learning Institutions of Shanxi.
J.Pinto: International Journal of Climatology.

Based on the Particle Swarm Optimization of Truck Crane Telescopic Jib Optimization and Implementation Gening Xu1, a, Xiaoyan Hou1,b，Qing Dong1,c 1College of Machinery Engineering，Taiyuan University of Science And Technology， Taiyuan，030024，P.R.China axugening@sina.com, blllshhxy@126.com，c523773587@qq.com Keywords: Telescopic jib; Mathematical model; optimization; Particle Swarm Optimization Abstract.
Telescopic jib weight is an important index to measure the structure features, the telescopic jib weight is chosen to be objective of optimization and objective function such as equation(1)： (1) Where:—proportion of material; —jib-sectional area; —jib length.
Jie, Zhihua.Cui, Particle swarm optimization, Science Press, Beijing 2004
Chinese Journal of Mechanical Engineering, 1985，pp.78-88

Welding Technology Research For The Train Bogie WangGang1， ChenZhiGang2 1 Chongqing University of Science &Technology，Chongqing，401331，wwg_16@163.com 2 Chongqing University of Science &Technology，Chongqing，401331，chenzg19901@163.com Keywords: SMA490BW steel, Welded joint, Welding process.
As the experimental material was thick plate, in order to prevent welding defects such as lack of penetration, we selected larger welding current, backing layer current was 230 A, filling layer was 260 A( table Table5 Main chemical compositiong of CHW-55 CNH layer IA) U（V） V（mm·s-1） backing 230 30 2.3 filling 260 29 2.0 covering 250 29 2.2 welding joint inspection (1) microstructure: Along the weld thickness direction for metallographic specimen, with 3% nitric acid alcohol corrosion, photographic under metallographic microscope XJG - 05, magnification of 100 x, samples of the parent metal, HAZ and weld metallographic images showed in figure 4.
[3] Wu Sheng Li.: The new development of alloy structural steel in China and its weldability [J]., Journal of welding. 2001，(5)：8-10

When the photons cross the media, the intensity of attenuation can be described as the following: (1) The implications of the parameters in the formula is: I0=the intensity of the wmitted light; I= the intensity of the transmitted light c=the density of the transmission matter z=optical path length β=the extinction coefficient of material, β is constant.to a substance.
[5] Yonghai Li, Photoelectric pulse sensor of finger clip type, J, Science and Technology, 87(2010)
[6] Jinhua Li, Yuhui Du, The design of photoelectric pulse sensor, J, Automation technology application. 100(2008) [7] Xu Zhang, Jie Zhou, The design and improvement of photoelectric pulse sensor, J, Chinese Journal of medical instrumentation. 2009 [8] Hui Wang, The measurement of fixed pulse rate, J, Science Communication.185(2010)

Investment for installing IFR was considered, it can reduce the value of oil losses and total VOCs (volatile organic compounds) from oil tanks as “The Announcement of Ministry of Science Technology and Environment; The Standard of Emission Control in Oil Terminal” [3].
[3] The Announcement of Ministry of Science Technology and Environment, the Standard of Emission Control in Oil Terminal, 2001 P18-19
[4] Weiqiu Huang, Juan Bai, Shuhua Zhao and Aihua Lv, “Investigation of oil vapor emission and its evaluation methods”, Journal of loss prevention in the process industries 24 (2010):P178-186
Chanchaona, “An evaluation of Evaporative Emissions of Gasoline from storage sites and service stations”, (Master’s thesis, Department of Energy and Material, King Monkut’s Institute of technology Thonburi, 1995), P85-112

By using this system, the dormitory management company management personnel can conveniently to student accommodation, attendance, discipline management, improve work efficiency, save manpower, material and financial resources, improve data reliability, safety, orderliness.
Acknowledgements This work was financially supported by the Department of Education of Heilongjiang Province Humanities and Social Science Research Project ‘Exploration and practice in information management in college dormitory’ (No. 12542334).
Science and Technology Forum, Vol. 3(2008), p.192 [2] P.
Journal of Wuhan Institute of Technology, Vol. 30(2008), p.108-111 [3] Q.F.