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Let and denote the Lame constant and mass density respectively, the transverse velocity; bars are used to refer to the material constants associated with the upper phononic crystal.
Acknowledgements The authors gratefully acknowledge the financial support of the work by the National Science Foundation of China under Grant No. 10632020.
Sigalas: Journal of Applied Physics Vol. 84 (1998), p. 3026
Wang, et al: International Journal of Solids and Structures Vol 46 (2009), p. 2571

Many sources of uncertainty are inherent in structural design, such as loads, material strength and elastic modulus, they are random variables, and thus absolute safety cannot be achieved.
References [1] DONG Cong: Modern Structural Systems Reliability Theory and Its Applications (Science Press, Beijing 2001)
Journal of Harbin Engineering University (2002), 23(2):118-121 [6] CHEN Wei-dong, ZHANG Tie-jun, and LIU Yuan-chun: Efficient Method for Identifying the Dominant Failure Paths.
Journal of Harbin Engineering University (2005), 26(2):202-204 Table 1 The expected values of strength Members Drag resist 2 / mMN Press resist 2 / mMN 1~12 13.35 8.23 13~24 72.66 72.66 25~48 22.55 12.28

Therefore, with the introduction of ceramic material with several attractive features in 1980s, it is a very much interesting candidates for LTE applications [4].
Usman, LTE-Advanced: Requirements and technical challenges for 4G cellular network, Journal of Emerging Trends in Computing and Information Sciences (2012), 3(5) 665–671
Shrivastava, Bandwidth enhancement techniques of dielectric resonator antenna, International Journal of Engineering and Technology (IJEST) (2011), 3(7), 5995–5999

It is named as one of the three mainstay of Science and technology with material and energy [1].
[2] DF Xu, YJ Miao: Journal of Hebei Institute of Mechanical and Electrical, Vol. 12(2008) No.3, p12
[3] S Wang: Journal of Modern Electronic Technology, Vol. 18(2011) No.3, p45

Manipulator track control is an important direction of robotics research, which includes many practical purposes, such as material transportation by scheduled routing at work place, welding machine operation track, robot intelligent follow movement [1].
Acknowledgements This work was financially supported by the Shandong Natural Science Foundation (ZR2011AL014), Doctor Foundation of Shandong Jiaotong University.
Reference [1] Hegao Cai: Chinese Journal of Mechanical Engineering, Vol.11 (2000), p. 58
[2] Fuquan Wang: Chinese Journal of Mechanical Engineering, Vol.11 (2000), p. 173

(2) The cable is of constant cross-sectional area when unloaded, and is composed of a homogeneous material.
China civil engineering Journal, 1996, 29(2): 3-9, in Chinese
Journal of the China railway society, 2004, 26(3): 76-80, in Chinese
Ship Science and Technology, 2007, 29(1): 53-55, in Chinese

Recent Researches in Environmental & Geological Sciences.
Cajka, Accuracy of Stress Analysis Using Numerical Integration of Elastic Half-Space (2013), Applied Mechanics and Materials, 300-301, pp. 1127-1135.
Key Engineering Materials, Vols. 577-578, (2014), pp 33-36 Trans Tech Publications, Switzerland, doi:10.4028/www.scientific.net/KEM.577-578.33 [13] R.
Advanced Materials Research, Vol. 818 (2013), pp 178-186, Trans Tech Publications, Switzerland, doi:10.4028/www.scientific.net/AMR.818.178 [14] R.
Advanced Materials Research, Vols. 838-841, (2014), pp 375-380, Trans Tech Publications, Switzerland, doi:10.4028/www.scientific.net/AMR.838-841.375 [15] R.

It is well known that ceramics are hard and wear-resistant, which make these materials difficult to machine.
The workpieces used in the experiments were two typical ceramic materials, Si3N4 and ZrO2.
The specific grinding energy decreases with the increase of material removal rate, and is related to the properties of materials.
Xu, et al: Key Engineering Materials Vol. 202~203 (2001), p. 171
Itoh, et al: International Journal of Machine Tools & Manufacture Vol. 38/7 (1998), p. 749

Study on Byproducts Recycling in Eco-industrial Parks Xiaolong Gao1,a*,Ruiqing Li2,b,Ran Li3,c 1Institute of Recycling Economy,Beijing University of Technology ,Beijing,100124,China 2 College of Materials Science and Engineering, Beijing University of Technology,Beijing,100124, China 3The School of Economics, Nankai University ,Tianjin,300457,China a*gaoxl@emails.bjut.edu.cn,blirui.qing@163.com,cliran1988cool@126.com Keywords: eco-industrial parks(EIPs), byproducts recycling, ecological correlation degree among enterprises, rate of byproducts recycling Abstract: Eco-industrial parks represent the future direction of the development of industrial system.
The lever analysis forwarded by Professor Statty in 1970s has been applied to analyzing the assessment index system of EIPs[3].Material flow analysis ,the method of the metabolic conversion of material resources in economic activity, focused on quantitative research of total substance in the integrated economic and environmental system.
Allied scholars have found specific framework of state of the substance in the economic system by material flow analysis[4].
Industrial symbiosis is a subset of industrial ecology, with a particular focus on material and energy recycling.
References [1]Xiaomei Sun,Zhaojie Cui,Liulei Zhu:China population,resources and environment.Vol.20(2010, p.123(In Chinese) [2]Tao Peng,Linjun Li, Hongfang Lu: Ecology and Environmental sciences.Vol.19(2010), p.1611(In Chinese) [3] Jun Wang, Siyu Yue, Qi Qiao: Research of environmental sciences.Vol.21(2008), p.175(In Chinese) [4] Yicheng Ye, Lihua Ke, Deyu Huang:Beijing:Metallurgical industry press.(2006), p.43(In Chinese) [5] Tiejun Dai, Zhongwu Lu: China environmental science.Vol.26(2006), p.632(In Chinese) [6] Information on http://en.wikipedia.org/wiki/Industrial_symbiosis [7]Information on http://www.inbicon.com [8]Andersen,M:Resource Efficiency,Green Week,Brussels(2011) [9]Jacobsen,N.B:Journal of Industrial Ecology.Vol.10(2006), p.239 [10]Information on http://www.novonordisk.com [11]Information on http://www.symbiosis.dk

From Fig.11 and 12, we can see stray current decreases versus the soil resistivity or insulating material resistivity when the others parameters are fixed, i.e. improve the soil resistivity or insulating material resistivity can decrease stray current corrosion to the buried metallic pipeline.
[4] Nestor Perez, Electrochemistry and Corrosion Science, (New York, America: Kluwer Academic Publishers, 2004), p.260-261
Zakowski, A new time–frequency detection method of stray current field interference on metal structures, Corrosion Science, 46 (2004) : p.1061–1070
[8] Beggs J, Fitzerald JH, Stray current testing on gas distribution piping following start-up of a new light rail transit line, Materials performance, 44 (2005): p. 22-25
Castellote, Feasibility of determining corrosion rates by means of stray current-induced polarization, Journal of Applied Electrochemistry, 38 (2008); p. 1466-1476