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Study on the Economy of Scale in Industry based on DEA Li Deqiang Management school of Shaanxi University of Science and Technology, Xi’an 710021, China ldqhb@126.com Keywords: DEA; Scale Economy Analysis; Steel Industry Abstract.
And steel is indispensable materials in economic construction.
Study on Green Scale Economy of Chinese Iron and Steel Industry Based on Super-Efficiency DEA Model: Industrial Engineering Journal, 2008(04) [3] Chu Xuping.

An experimental study on improved production process of large-diameter cylinder assembly Zeng Huifan Hunan Vocational College of Science and Technology, Changsha, Hunan, 410118, China Keywords: Large cylinder; aging treatment; welding residual stress; post-welding deformation compensation Abstract.
However, due to the long-term ageing of large workpieces, limitations are likely to be induced, such as the material accumulation and production area occupation etc..
This results in production material accumulation, production area occupation, low production efficiency, and the influences on the delivery date of whole products.
Journal of welding, 2003, (02).

Geomechanics Study on the Influence of Water Level Variation on Landslide Safety in Three Gorges Reservoir Region Dongfang Tian 1,2 1State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,China 2College of Hydraulic & Environmental Engineering,China Three Gorges University, Yichang,Hubei，China Keywords: water level variation, landslide safety, Three Gorges reservoir region Abstract: Up concave and linear slices are two basic geometric shapes of the landslides.
Landslide A Landslide B Fig.1 The section of landslides Material parameters are listed in table 1.
Table 1 The material parameters of landslides partition dry unit weight (kN/m3) saturated unit weight （kN/m3） C (kPa) (°) (°) (m/d) Landslide A sliding mass 18 22 13 19.6 5 10 sliding zone 17 21 10 14 5 0.1 Landslide B sliding mass 18 22 13 22 5 0.1 sliding zone 17 21 10 14 5 0.01 The variation of landslide safety.
Journal of Geotechnical Engineering, 1977, 103(GT5): 447-466

Experimental Methods Materials.
Zeng: Anhui Agricultural Sciences Vol. 39 (2011), p. 5349
Zhu: Journal of Food and Biotechnology Vol. 27 (2008), p. 80

Premkumar et al. [3] developed a novel semantic laminated composite knowledge management system that is based on a suite of ontologies for laminated composites materials and design for manufacturing.
Witherell, et al., “Ontologies for Supporting Engineering Design Optimization,” Journal of Computing and Information Science in Engineering, 7 (2007), pp.141-150

Temperature influence on stress-strain relationship of Al-Cu-Fe crystal-quasicrystal composites Jacek Krawczyk1,a, Wojciech Gurdziel1,b , Włodzimierz Bogdanowicz1,c Krzysztof Flisiński1 1 Department of Crystallography, Institute of Materials Science, University of Silesia, 12 Bankowa Str., 40-007 Katowice, Poland a jkrawczy@us.edu.pl, bwojciech.gurdziel@us.edu.pl, c wlodzimierz.bogdanowicz@us.edu.pl Keywords: quasicrystals, composites, Young's modulus, tension test, stress-strain relationship Abstract.
Danilov: Journal of Crystallography Reports, vol. 52 (2007) p. 953-965 [9] Z.

Experimental Materials.
Acknowledgements The authors gratefully acknowledge the financial support provided by Science and Technology Commission of Shanghai, China (No.10540501100& No.LM201443) and by the Open Project Program of State Key Laboratory of Dairy Biotechnology, Bright Dairy & Food Co.
Journal of the Taiwan Institute of Chemical Engineers, 44 (2013) 182–191.

Measurement of Cutting Speed of Mechanical Excavator Hou Yajuan1, Wang Jisheng2, Li Aifeng2, Gao Suhe2 and Wang Guoqiang1,a 1College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China 2Taiyuan Heavy Machinery Co., Ltd, Taiyuan 030024, China awgq6504@126.com Keywords: mechanical excavator, cutting speed; kinematics; virtual prototype technology Abstract.
Introduction Mechanical excavators are widely used as primary production equipment for removing overburden and ore materials.
International Journal of Geomechanics, 2008, 8(1): 2-10.

The material damping and constitutive equation in the half-space are introduced in accordance with Voigt’s model as the following Eq.1.
The top of the half-space covered a single layer with the same material of half-space.
&Tech.: Natural Science Edition,2010,42(5):621-624
[6] ZHOU Huafei, JIANG Jianqun: Chinese Journal of Geotechnical Engineering, 2006, 28(12):2104-2110.In Chinese.

Effect of Electromagnetic Stirring method on the Microstructure of an Al-Cu Alloy in Semi-solid Chen Li- juan1, a, Jing Qing-lin2,b， Jiang Ye-hua2,c 1College of Phycics and Electronic Engineering,Qu Jing Normal University,China 2Machine-electrical Engineering Institute, Kunming University of Science and Technology,China acandychenlijuan@163.com, bjinqinglin@yahoo.com, cjiangyehua@Kmust.edu.cn Key words: Eletromagnetic stirring; Al-Cu alloy; Microstructure Abstract: In order to change the dendritic grain structure of Al-Cu alloy to equaxed grain, the effects of electromagnetic stirring on the microstructure of an Al-Cu alloy were investigated.
[7] Dehong Lu, Yehua Jiang, Guisheng Guan, Rongfeng Zhou, Zhenhua Li, Rong Zhou，Refinement of primary Si in hypereutectic Al-Si alloy by electromagnetic stirring，Journal of Materials Processing Technology 189 (2007): 13–18.