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With the development of communication technology, people no longer need to visit the library to look up the materials; in contrast, they are able to get the information online.
Potential Demand The university library is an important component part in the university education and research, which contains a great number of books, journals and other materials.
Challenges in the network services costs Now, people may expediently search, upload and download electronic books, electronic journal, news, music, movie and other materials by mobile phones.
Kutluca: Procedia-Social and Behavioral Sciences, Vol. 47 (2012), p. 2225 [5]A.F.
Phillips: Journal of Academic Librarianship, Vol. 24 (1998), p. 216 [6]Q.Y.

Hosseini Department of Material Science and Engineering, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran s_limooei@yahoo.com Keywords: Taguchi analysis, Manganese steel (Hadfield), Austenitizing temperature, Austenitizing time, quenching solution, Hardness Abstract.
Methods and Materials In the present study, cylindrical specimens of Hadfield steel were used.
Srivastava, K.Das, “Microstructural Characterization of Hadfield Austenitic Manganese Steel”, Materials Sciences, 2008, Vol. 43, pp.5654-5658
[10] P.W.Mason and P.S.Prevey, “Iterative Taguchi Analysis: optimizing the austenite content and hardness in 52100 steel”, Journal of Materials Engineering and performance, Vol. 10(1), February 2001,14-21
Tagore, “Experimental investigation on flow-forming of AA6061 alloy-A Taguchi approach”, journal of materials processing technology , 2008(200): 283–287 [12] Adem Cicek, Turgay Kivak, Gurcan Samtas, “Application of Taguchi Method for Surface Roughness and Roundness Error in Drilling of AISI 316 Stainless Steel”,Journal of Mechanical Engineering, 58(2012)3, 165-174.

Material yield follows the Mises yield condition.
Acknowledgement The authors gratefully acknowledge the research support for this work provided by National Natural Science Foundation of China (No.50578018).
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David: International Journal of Fatigue Vol. 31 (2009), p. 20-27 [4] D.Taylor: Engineering Fracture Mechanics Vol. 75 (2008), p. 1696-1705 [5] S.

In the sustainability assessment (SA), the DCC showed in the equations is the sum of costs of consumed natural resources, consumed materials, consumed energy and equipment depreciation, maintenance, salaries and taxes related to the protective packaging production in terms of the protective packaging design.
Saito: Journal of Applied Packaging Research.
Journal of Packaging Science and Technology, Japan.
Journal of Industrial Ecology.
Packaging Technology and Science.

In structure computation materials properties of steel bar was frequently simplified to doubling straight line or three straight line computation model [7].
Acknowledgements This paper is supported by National Natural Science Foundation of China (51008047, 51108052).
Journal of Bridge Engineering, ASCE.
Journal of Tongji University (Natural Science) Vol.36(11) (2008)p.1462-1500 [5] BU Zhanyu, TANG Guangwu.
Journal of Wuhan University Of Technology (Transportation Science &Engineering).

The materials and mass property of wheel part also presented as shown in Table 3 and Table 4.
Bandala: International Journal of Advanced Robotic Systems Vol. 13 (2016), p. 1 [6] K.
Cho: International Journal of Advanced Robotic Systems (2018), p. 1 [9] S.
Karthik: International Journal of Robotics and Autonomous System Vol. 3 (2018), p. 1 [10] F.
Aditya: Dhaka University Journal of Science Vol. 60 (2012), p. 115

Experimental Materials and Instruments.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (No. 20771013/B0101), HeBei province higher education teaching reform research support program (103045) and Hengshui Municipal Science and technology research projects (09057Z).
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Liu, Journal of Weinan Teachers College, In Chinese, 2004, 19(2): 47-49 [7] Y.
Chinese Journal of Organic Chemistry, 2009, 29(7): 1001-1017

Journal of Materials Science Vol. 37(17) (2002), p. 3675-3683 [2] J.J.
Mechanics of Composite Materials Vol. 43 (2007), p. 9-28 [5] J.H.
International Journal of Fatigue Vol. 35 (2012), p. 2-9 [13] Cornell Fracture Group.
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Journal of Jiangsu University (Natural Science Edition) Vol. 32 (2011), p. 355-358

Engineering Research Center Of Biomass Materials, Ministry of Education, Southwest University of Science and Technology, Mianyang, 621010; b.
They have been traditionally used as a source of energy, but for the last 20 years, intensive efforts have been devoted to incorporating lignin preparations into useful polymeric materials [3].
However, because it was remarkably difficult to improve the compatibility and homogenous microstructure between lignin and polymer, lignin-based polymer blend materials did not utilized in plastics widely.
Acknowledgements This research was financially supported by the Fund of Engineering Research Center of Biomass Materials, Ministry of Education (10zxbk09).
Journal of Applied Polymer Science, 2001, 79, 72-79.

In equation (11), (12) and (13), andis the material parameters of stratum.
Moreover, materials was damaged by the existence of circumferential stress, which made the materials into yield situation.
References [1] Liu Xiangjun et.al, Journal od Southeast petroleum institute, 2002,24(2):50-52(in Chinese) [2]Roegiers J C.
Oil &Gas Science and Technology - Rev .
International Journal of Rock Mechanics & Mining Sciences,2009 ,46(1): 90– 96 [4]Risnnes R, Rilf K B and Horsrud P．