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The Application of The Multimedia Technology in College Physical Teaching Reform Shi Jian-hua School of Science, Communication University of China Beijing 100024,China shijh@cuc.edu.cn Keywords: Multimedia Technology; College Physics Reform；Teaching Effect Abstract.
Introduction Physics is a natural science based on experiments.
Qualified teachers can provide college physics multimedia course system, including complete teaching files, clear requirements and rich materials, covering course, submission and correction of homework, analysis of samples, simulation of exams and real-time Q&A etc.
Curriculum, teaching materials, teaching methods, 2002 [2] Li Hui-zhang.
Journal of Inner Mongolia University for Nationalities,2003,8(4) [5] Fu Jing.Discussion on teaching reform of University Physics[N].

Large Area Synthesis of 1-D ZnO Nanostructure Arrays on Zn Substrate via Solvothermal Process Je Hyeong Park1, Hong Goo Choi2, Jong Ho Kim 1 and Do Kyung Kim 1,a 1 Department of Material Science and Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Korea 2 Process Development Group, Samsung Corning Precision Glass Co., Ltd. 544, Myungam-Ri, Tangjung-Myun, Asan-City, ChungNam, Korea, 336-840, Korea a Corresponding author: dkkim@kaist.ac.kr Keywords: zinc oxide, solvothermal synthesis, nanorod, nanowire, large area, alignment Abstract.
ZnO, as a wide bandgap (3.37 eV) semiconductor with a large exciton binding energy (60 meV), has been extensively investigated, due to its promising applications in short wavelength light emitting, transparent conductor, piezoelectric materials and room temperature ultraviolet (UV) lasing.
Zhang: Nanostructured Materials Vol. 8 (1997), p. 815-823 [4] S.
Zou: Journal of Crystal Growth Vol. 282 (2005), p. 125-130 [15] E.

State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China ajqlinit@yaoo.com.cn,bfanzt@mail.hust.edu.cn,cdongxp@mail.hust.edu.cn,ddavynjtu@126.com, elxy@nit.zju.edu.cn Keywords: Magnesium alloys; Mechanical vibration; Microstructure; Mechanical property Abstract: Mechanical vibration was introduced into the solidification in order to overcome the defects of coarse microstructure and low mechanical properties of the AZ91D magnesium alloy via lost foam casting（LFC）.
Besides, Tensile test bars were fabricated to a gauge length of 80 mm and a gauge diameter of 10 mm , and the tensile tests were carried out at a strain rate of 1.0 mm/ min in a materials test machine.
Fig.3 Fracture surface of AZ91D alloy via LFC in different processing (a) As-cast; (b) Vibration-freezing Discussion Usually, the microstructure of materials depends on the nucleation process and on the growth conditions.
Acknowledgements This research was supported by the National High Technology Research and Development Program of China (Grant No. 2007AA03Z113), and the Natural Science Foundation of Ningbo, China (Grant No. 2008A610049).
Huang: The Chinese Journal of Nonferrous Metals.Vol.16 (2006), P.1838-1844(In Chinese)

Introduction The numerical damage simulation with a proper material model describing all significant damage phenomena offers detailed damage information at least in the local level of the material point or Gauss-point of the FE-element.
Both specimens have the same geometry and material parameters.
Table 1 indicates the material property given in [3].
Acknowledgement This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education, Science and Technology(No. 2010-0024960) Reference [1] R.
Smith: Basic reinforced concrete frame performance under vertical and lateral loads, ACI Journal, Title No. 70-28, (1973) pp.261-269.

Evolutionary Structural Topology Optimization for Cantilever Construction of Continuous Rigid-Frame Bridge Wenhui Zhang1, a, Yaoting Zhang1, b and Guoqing Li1, c 1School of Civil Engineering and Mechanics, Huazhong University of Science & Technology, China asobyebye11@163.com, bzyt1965@mail.hust.edu.cn, clig57@mail.hust.edu.cn Keywords: topology optimization, continuous rigid-frame bridge, engineering constraints, the filter scheme.
The Ishai stress criterion [5] is more applicable to the optimization of concrete structures than von Mises stress criterion, because the Ishai stress can describe the features of different type materials, and the concrete materials have the property with different features in tension and compression.
The elasticity modulus of all artifical material elements is set to , where E = the elasticity modulus of the real material; and rw= the ratio of the weight of the elements with birth capability in the current design domain to that of the initial design domain with a fixed finite element mesh fully filled with material.
A Bi-directional Algorithm Based on Ishai Stress Criterion and Artifical Material Elements.
[5] Jailin Fu, Jianhua Rong: Journal of Changsha Communications University.Vol.21 (2005), p. 21-27(In Chinese)

Study on Ground Penetrating Radar in Detecting of Zero-temperature Boundary under the Railway Bed Du Lizhi1,a, Zhang Xiaopei1,b, Qiu Jianhui1,c, Liu Wenbo2,d 1 College of Construction Engineering, Jilin University, 130026, Changchun, China 2 Beijing Xin Heng Yun Science & Trade Co., LTD, 100029, Beijing, China a email:dulizhi98@jlu.edu.cn, b email:geopen001@vip.sina.com, c email:qiujh@jlu.edu.cn, d email: liuwenbo881@sohu.com Keywords: Ground Penetrating Radar (GPR); Permafrost; Railway subgrade Abstract.
The experimental results show that the method is accurate and effective, and we can get better material data on the zero-temperature interface.
Chinese Journal of Engineering Geophysics, Vol.2(1),2005. p.9-11 [5] Sandmeier KJ (2006) REFLEXW Version 4.0 for Windows 9x/2000/NT/XP.

All the samples presented small standard deviations indicating that the route adopted permitted the formation of homogeneous materials.
Zhang: Progress in Materials Science Vol 49 (2004), p. 537
Le Caer: Structured Materials Vol 2 (1993), p. 217
Suryanarayana: Progress in Materials Science Vol 46 (2001), p. 1
Murray: Journal of Phase Equilibria Vol 2 (1981), p. 185

Nevertheless up to now the quantitative accuracy of the method is poor for residual stress analyses close to the materials surface up to depths of approximately 0.2 mm and in the case of steep in-depth residual stress gradients or oscillating residual stress depth distributions.
Testing assembly and materials investigated Table 1: Material properties.
The specimens and material data are provided by Rolls-Royce Deutschland Ltd & Co KG.
Kandil, A UK Residual Stress Intercomparison Exercise –Development of Measurement Good Practice for the XRD and Hole Drilling Techniques, Materials Science Forum (2002) 567-572 [7] H.
Journal of Computational and Applied Mathematics 63 (1994) 365-372 [10] A.

The mining enterprise’s products are a natural resource, and the materials consumed in production processes don’t constitute the product entity.
The purchasing cost of auxiliary materials is a part of the product cost.
Acknowledgment Supported by the National Science & Technology Pillar Program (2006BAB08B010).
[3] Liu Li, Wang Ping, Su Qinghui, ”Research on the information management in the commercial intelligence system,” Journal of Harbin Institute of Tecnology, vol.39, No.7, Jul.2007, pp.1142-1145 [4] Yazhuo Gao, Zhiwei Ni, Yuxiao Zhao, “A Scheduling Strategy for OLAM Tasks and Its Application in a Financial BI System,” Proc.
China, 2008 [9] Tong Yan, Li Yijun “The Evaluation of Enterprise Informatization Performance Based on AHP/GHE/DEA,” pp.149–155, Aug.2007, 2007 International Conference on Management Science & Engineering, Harbin P.R.

Acknowledgment This work was financially supported by “the Natural Science Foundation for Young Scholars of Jiangsu Province, China(Grant No.
References [1] Su lianfang, Jin zhenxing, “Research on the corrosion inhibitor performance of ATMP and sulfourea,” Jinzhou Normal College Journal, vol. 22, no. 2, pp. 29–31, 2001
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