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Evaluation of Development Level of Agricultural Circular Economy in China Ling Xin Institute of Agricultural Economics and Development, Chinese Academy of Agricultural Sciences, Beijing, 100081, China xinling@caas.cn Keywords: Agricultural circular economy, comprehensive evaluation, China, Eastern, middle and western regions Abstract.
Introduction Agricultural circular economy follows the law of ecological economic system and social economic system with aim of sustainable development and principle of minimization, recycle and resource, which minimize input amounts of resources and materials, and reduce ecological destruction and environmental pollution in the process of agricultural production to harvest more and more, and better and better agricultural products and realize ideal combination of agricultural ecological system and human socioeconomic system.
Furthermore, agricultural science and technology was rapidly developed.
The investment in agriculture machinery, water conservancy and other infrastructure construction and science and technology by the eastern developed region was more than that of the central and western regions.
[2] Ｒobert A Frosch．A perspective on industrial ecology and its ap-plication to metals－industry eco－system［J］．Journal of CleanerProduction，1997，(5):39—45

Progress in Natural Science Materials International, 2002,12(6):669-672
University of Science and Technology of China, 2008,6-35
[M] Chengdu: Sichuan Science and Technology Press,1991
Journal of Electronics and Information Technology, 2009,31(12): 2858-2863.

Acknowledgement The authors would like to acknowledge the support of the International Investment Opportunities Fund (IIOF) from the Foundation for Research, Science and Technology (FoRST) of New Zealand (Contract Number: UOAX0723) and the National Natural Science Foundation of China (NSFC) under Grant No. 50975109.
Volume 2.Gordan and Breach Science Publishers, Yverdon
Journal of Materials Processing Technology, 141, 357-364

The Design of Course-Oriented Online Judge Chao Yia, Xiaoyu Dub, Su Fengc, Siyuan Lid and Yue Zhuoe College of Information Science and Technology, Beijing Normal University, Beijing, China, 100875 a yichao@mail.bnu.edu.cn; b xyjian@mail.bnu.edu.cn; c fengsu@bnu.edu.cn d lisy@mail.bnu.edu.cn; e zyue1105@mail.bnu.edu.cn Keywords: Component; Course-Oriented; Online Judge; Collaborative Learning Platform; Diversified Answers Abstract.
It supports rates between members.[3,4] Teachers can upload courseware in WebCL, or use links as teaching materials.
Conclusively, compare to the Web-Based Collaborative Learning Platform and traditional Online Judge, COOJ can serve computer science education better, and should be extended to more fields.
References [1] Peking University Online Judge and Its Applications, Li Wen-xin, Guo Wei, Journal of Jilin University (Information Science Edition), 2005 [2] Online judge, A Kurnia, A Lim, B Cheang - Computers & Education, 2001 [3] The Design and the Development of the Web Based Distant Collaborative Learning Platform, Mu Rangjun, Modern Distance Education, 2002 [4] Internet Collaborative Learning and the Application of CSCL, Gan Yongcheng, Distance Education in China, 2003 [5] Moodle: Using learning communities to create an open source course management system, M Dougiamas, P Taylor - Proceedings of World Conference on Educational Multimedia, 2003

Design of Mobile Learning System Base on Cloud Computing ZHENG NONG College of Education Science Guangxi University For Nationalities Nanning,China nongneal@163.com Keywords: Cloud Computing; Mobile Learning; Education Resources; Virtual Community.
Learners can use their own learning information to lean anywhere and at any time, or share their own learning materials with others.
Acknowledgements Supported by The Project of Education Science Planning of Guangxi China (No.2010C044 ).
Journal of Chongqing Jiaotong University(Social Sciences Edition), Vo.l 9 No. 4 (2009),p.104-106

Introduction: There is an increasing demand for novel polymeric materials with improved physical properties for high tech applications.
Blending of polymers and polymer composites are two important approaches towards achieving novel polymeric materials.
Materials and Methods: The isotactic polypropylene chips were provided by Reliance industries Ltd., India.
L.Deopura, High Modulus/Tenacity Filaments from Blends of Different Molecular Weights of Polypropylene, Journal of Applied Polymer Science. 96(4) (2005) 1021
Hui, The revolutionary creation of new advanced materials-carbon nanotube composites, Composites B. 33 (2002) 263-77

Sreekumar Materials and Metallurgy Group, Vikram Sarabhai Space Centre, Trivandrum-695022, India.
EDAX analysis confirmed elemental compositions of AA2219, pure aluminum and SS321 material.
References [1] Tusharkanti Raychaudhuri, Dinesh Kumar Pal, Simran Kaur, Shallu Gupta: submitted to International Journal of Impact Engineering (2010)
[2] S.A.A Akbari Mousavi, S.T.S Al-Hassani, Finite element simulation of explosively- driven plate impact with application to explosive welding, Materials and Design 29 (2008),pp. 1-19
Blazynski, Explosive Welding, forming and compaction, Applied Sciences Publication 1983

On the left side there is saw machine used for cutting of workpieces from basic profile materials.
Novakova-Marcincinova, Utilization of augmented reality elements for visualization of operational states of manufacturing devices, Applied Mechanics and Materials 308 (2013) 111-114
International Journal of Advanced Robotic Systems  9 (2012) 54-54
Barna, Verification of machine position in production plant with use of virtual reality technology, Applied Mechanics and Materials 308 (2013) 171-174
Novakova-Marcincinova, Advanced techniques for NC programs preparation, Applied Mechanics and Materials 389 (2013) 726-729

Dons: Journal of Light Metals, Vol. 1 (2001), p. 133
Brusethaug: Metallurgical and Materials Transactions, Vol. 30A (1999), p. 2135
Sheppard: Materials Science and Technology.
Sauer, K.Siegert, in: Extrusion, Second Edition, ASM International, Materials Park, Ohio (2006)
Saha, in: Aluminium Extrusion Technology, ASM International, Materials Park, Ohio (2000)

Introduction Single-crystal CaF2 is a material with very excellent optical properties [1].
This means that strain rate has great influence on the strength of the material.
Acknowledgment This work was supported by the National Natural Science Foundation of China (Grant No. 50875066).
Zhang, et al, An Introduction to Computational Nanomechanics and Materials, Comput.
Kniep, et al, An Atomistic Simulation Scheme for Modeling Crystal Formation from Solution, The Journal of Chemical Physics 124 (2006) 024513