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Applied Mechanics and Materials ,accepted( 2013) [2] Yujun Bao, Xiaoyan Jiang. 2011 International Conference on Electronic & Mechanical Engineering and Information Technology. 12-14 August, 2011, P.485-488 [3] Peng Xuange, Xiao Ying. 2010 Second International Workshop on Education Technology and Computer Science.
P.667-670 [4] BAO Yu-jun, Journal of Changzhou Institute of Technology.

Current Problems in Land Utilization Involved in Urban and Rural Planning Urbanization is inevitable in the social development, because it offers convenience for the production and life, and promotes the material and spirit civilization of teh society.
[2] Huang Xiaofeng, Shi Jiangang, Tian Yilin:Journal of Hunan Agriculture University (Social Science Issue) 2006(10), In Chinese
[3] Yao Shimao, Shuai Jiangping:Science and Technology of China 1995(12), In Chinese

As one of the most important physical parameters of material, analyzing its characteristics and influence factors is meaningful.
Acknowledgements This work is supported by National Science Foundation under grant No.60879021.
The author would like to thank China National Science Foundation Committee and Civil Engineering Laboratory of Civil Aviation University of China.
Behringer: The European Physical Journal E 32, P.135-145 (2010) [3] Roberto R.

Tests show that arc gear carrying capacity is three to four times higher than involute gear in the same material and same size[1,2].
This paper propose a new arc gear called quadruple-arc gear supported by National Natural Science Foundation of China.
Acknowledgements This work was financially supported by the Ningxia Natural Science Foundation (NZ1045).
Fong, , “Tooth Contact Analysis for Helical Gear with Pinion Circular Arc Teeth and Gear Involute Shaped Teeth,” 1989，ASME Journal of Mechanisms, Transmission, and Automation in Design, Vol.111, pp.278-284

High performance material of self-dense slight-expansion concrete and embedded bar technique is recommended, which could guarantee the quality of the reinforcement.
In: Progress in Safety Science and Technology Volume 4, Proceedings of Asia Pacific Symposium on Safety 2005.
Beijing: Science Press, 2005,p.542
[5] Li Li, Wang zhenling: Journal of Xihua University(in Chinese).

The electro-hydraulic exciter is characterized by its large displacement and strong exciter force, so it is widely applied in many main industrial fields such as earthquake environment simulation, large-scale structural dynamic characteristics test, material fatigue examination and device fault diagnosis, etc[2].
Acknowledgement It is a project supported by the Committee of National Foundation of Natural Sciences (50675204) and the Committee of the important item of Zhejiang Provincial Foundation of Natural Sciences (D1080667).
Proceeding of the institution of mechanical engineers part 1-Journal of systems and control engineering.

The P wave, or compression wave, alternately compresses and expands material in the same direction it is traveling.
Computer-Aided Civil and Infrastructure Engineering Volume:24,Issue Number: 4,Publisher: Blackwell Publishing, 4(6), 1093-9687 (2009) [8] Wu Jing-Jin Chen Wei: (Nanchang University, Nanchang 330029); Edge Detection Based on Multi-scale Lifting Wavelet; Journal of Chongqing University of Science and Technology (Natural Sciences Edition). 1(4), 90-99 (2009) [9] Donald B.

Application of the higher modes to crack identification in a cantilever beam LIU Yuxiang a ZHANG Weiweib MA Hongweic College of Science & Engineering, Jinan University, Guangzhou 510632, China.P.R a hpliuxy@163.com b zwwps@hotmail.com c tmahw@jnu.edu.cn Keywords: damage detection; crack; wavelet analysis; a cantilever beam Abstract: Damage detection by the wavelet transform of the fundamental vibration mode receives much attention recently.
And its geometric and material parameters list as following: Density 33 /100.8 mkg×=ρ Young's modulus GpaE 223= Beam high mmh 15= Beam thick mmb 15= Beam length mmL 500= The cracked vibrating beam is modeled as a segmented beam whose analytical model was Eulero-Beronoulli beam.
Acknowledgment This study was supported by the Key Natural Science Research of Guangdong Province,China P.R (Grant No. 05Z003) and the Project of tackling key problem of Guangdong Province, China P.R (Grant No. 2006B12401008) References [1] H.N Li and H.M Sun: World earthquake engineering. 2003(2), p.16 (Chinese)
[7] E.Douka, S.Loutridis and A.Trochidis: Journal of Sound and Vibration.Vol. 277 (2004), p.1025

To simplify the twodimensional analysis, it is assumed that: 1) all regions are extended infinitely in x direction; 2) permeability of back iron is infinite; 3) edge effects in the z direction are ignored; 4) the permeability of PM material is equal to the permeability of free space.
Acknowledgment The work described in this paper was supported by the National S&T Major Project (2009ZX02207-001), the National Science Foundation of P.
China (No. 51177024) and the National Science Foundation for Distinguished Young Scholars of China (Grant No. 51225702).
International Journal of Advanced Manufacturing Technology, 2009, 48(5-8):633-643

North China Institute of Aerospace and Engineering, Department of Material and Engineering, Langfang Hebei 065000; 2.
Hebei University, College of Environment and Science, Baoding Hebei 071002) Key words: environmental protection, coordinate, paradox, double-win Abstract: Harmonious development of environmental protection and economy is a realistic choice made in specific national situation for economic development and environmental protection.
Heilongjiang Science Information, 2010, (35): 150 In Chinese [2] Hongchun Zhou, Lizhi Lv.
Journal of Guizhou Policeman Occupational Institute, 2010，（04）：66-69 In Chinese