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Introduction All those published on the network in digital form and helpful to teaching can be referred to as digital teaching resources, such as online courses, test bank, multimedia materials, e-books, teaching cases, courseware, references and so on.
Then, the management personnel shall classify these resources into several categories, i.e. engineering, natural science, literature, philosophy, and education, etc, each containing teaching plans, courseware, material library, papers and FAQs, etc.
References [1] Huang Linna, Liu Fenghua, et al, (2013) Research on the Sharing Mode of Digital Educational Resources Based on Cloud Computing [J], Journal of Xingtai University, Jun. pp.163-168 [2] Zhang Huainan, Yang Cheng, (2012) Research on the Digital Teaching Resource Construction of Beijing Colleges & Universities Based on Cloud Computing [J], Modern Educational Technology, Jun. pp. 44-50 [3] Research on Application of Cloud Computing in the Building Monitoring System [D] by Wan Shi, June 2012.

The plexiglass disc with groove was applied to substitute the CBN pectination grinding wheel to meet the need of experiment, the main consideration is that the material can be transparent and produce light sheet to find the variety of flow in the groove effectively.
(Northeast university press, China 2002) [2] S Ebbrell, N H Wooley: Internationsl Journal of Machine Tools & Manufacture, Vol.2 (2000) No.40: pp. 209-223
Gong, H.Li, G.Q.Cai: Key Engineering Materials, Vol.329 (2007), pp.507-510
(Science Press,China,2001,pp.35-118

Choosing cutting parameters Logical decision-making and calculated decision-making Reasoning and matching Edit Modify Acquire figure and material characteristic parameter of blank model Uniform manufacturing model based on machining feature Machining feature parameters database Database for feature process correlation, machine, tools, cutting parameters Component model including intact process information Key Technologies Uniform Manufacturing Model. 3D feature component model including geometric configuration, technological specifications, is regarded as design model.
Acknowledgments The authors are grateful to the project supported by the youth natural science foundation in North University of China, for its support and the facilities extended to them in carrying out this work.
Ruan and K.Yamasaki: Journal of Materials Processing Technology, Vol. 174 (2006), pp.74-81

Hsu (Xu Zuyao)c School of Materilas Science and Engineering, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030, China a Xhuang72@sjtu.edu.cn, bspchen@sjtu.edu.cn, czyxu@sjtu.edu.cn Keywords: FeMnSiCr alloy, rare earth, shape memory effect, martensitic transformation, segregation, stacking fault energy, Shockley partial dislocation.
They look promising to be used, at large scale, as the material of tighteners or pipe couplings due to their low cost and good workability.
Mater., Shape Memory Materials, Tokyo, Japan, 1988, Vol. 9 (MRS, Warrendale, PA, 1989), p. 451
He, et al.: Journal of Shanghai Jiao Tong University Vol. 33 (1999), p. 765

Introduction Fluidization is a process where a granular material is converted from a static solid-like state to a dynamic fluid-like state by passing up fluid through the granular material.
While high tangential velocity may lead to faster rate of material processing due to intense swirling, low pressure drop is important to ensure minimal power consumption.
Martin, “Experimental studies on a swirling fluidized bed with annular distributor” Journal of Applied Sciences. 11 (2011) 1980-1986.

., Taian 150001, China 2 Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China 3 Department of Material Science and Engineering Chemistry, Harbin Institute of Technology, Harbin 150001, China 4 Zhaoyuan Jinbao Electronic Co., Ltd, Zhaoyuan 265400, China a,c snail006@sina.com, bmzan@hit.edu.cn, d Huxuri@yahoo.cn Key words: Electrolyte copper foil; Nano-electroplating; Zn-Sn-Ni ternary alloy; Corrosion resistant; Electrodeposition behavior Abstract.
Introduction As an important kind of dominant industrial material for PCB, electrolyte copper foil is well anticipated in the market of electronic industry.
Experimental Material and Method The electrolyte solution contained the following major components: (K4P2O7·3H2O), ZnSO4·7H2O, SnSO4, NiSO4·6H2O, and pH value was adjusted by KOH.
Pushpavanam: International Journal of Hydrogen Energy Vol. 27 (2002), p. 627 [4] Elkhatabi, F, M.

Qiu Instrument Science and Engineering Department, Southeast University, Nanjing, 210096, China Keywords: MEMS Gyroscope, DETF, Resonator, Frequency Shift, Frequency Modulation Abstract.
In the case, dω = rω , r m m QA x 2 ω = , (5) where r Q ξ = 2 1 is quality factor of the DETF driving mode. r r fπ=ω 2 ( fr is the natural frequency in DETF driving mode) is determined mainly by structural material properties and geometry parameter.
The natural frequency of a drive mode can be given by the expression [5] ( )b r m.mL WED f 37501 12 7 3 +       π = , (6) where D, L, W is, respectively, the thickness, length and width of the beam, E is the Young's modulus of the material of the device, m is the mass of perch attached to the center of the beam and mb is the mass of the tines.
Note that S is only dependent on material and geometrical parameters.
Howe: Journal of Microelectromechanical Systems, Vol. 11, 2002

The work piece is an oval flange as shown in Fig.1; the work piece material is the AISI 1045 steel.
Acknowledgements The paper is Sponsored by the Important National Science & Technology Specific Projects of “Top Grade CNC Machine Tools and Basic Manufacturing Equipment” (No.2009ZX04014-22).
Yang, et al: Chinese Journal of Mechanical Engineering, in press [2] P.
Yang: Advanced Materials Research Vols. 189-193 (2011)

The whole system was insulated with thermal insulation materials.
(2) According to the relation of heat transfer between internal tube and outer tube (cooling jacket), we can get (6) Where hi is heat transfer coefficient between gas-liquid flow and the internal side of tube, ho is heat transfer coefficient between cooling water and the outside of tube, λ is heat conductivity of tube material. di, do are internal and outside diameters of tube respectively.
transfer area, m2 d Inside pipe diameter, m m mass flow rate, m3/s t Temperature, ℃ DR Drag reduction, % DRA Drag reducing agent HTR Heat transfer reduction, % St Stanton Number, dimensionless PAM Polyacrylamide ppm Parts per million Re Reynolds number, dimensionless f Friction factor Nu Nusselt Number, dimensionless Pr Prandtl number, dimensionless USG Superficial gas velocity, m/s USL Superficial liquid velocity, m/s Δtm Logarithmic mean temperature difference Φ Heat flux, W K Overall coefficient of heat transfer, W/(m2•K) h Heat transfer coefficient, W/(m2•K) Rth Thermal resistance, (m2•K)/ W g Acceleration of gravity, m/s2 Greek symbols Δp Frictional pressure drop, Pa ρ Density, kg/m3 m Fluid viscosity, Pa•s λ Heat conductivity of internal tube, W/(m•K) Subscripts i Internal side of tube o Outside of tube (on the side of cooling water) DR With drag reduction agent References [1] Virk P S, “Drag reduction fundamentals,” AIChE Journal
“Experimental Heat transfer of drag-reducing polymer solutions in enhanced surface heat exchangers,” Experimental Thermal and Fluid Science, vol. 10, pp. 221-228, February 1995.

The material of diffuser is PMMA which refractive index=1.49, the refractive index of air=1.00,the critical angle (42.2°)of total reflection occured when light from diffuser into air can be calculated by the equation(1).Therefor, When light from the PMMA material diffuser which refractive index is into the air, when≧42.2°total reflection will be occared.
The diffuser is 960mm-long, 30mm-wide and 2mm-thick, which material isPMMA, The model is shown in Fig.2.
Acknowledgement This study was funded by the National Natural Science Foundation of China (No.51173015) and the Fundamental Research Funds for the Central Universities, ( No zz1011).
Journal of Applied Optics. 2011,32(4):613 [3] C.Y Liang.