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Authentication and Key Agreement in a 3G-INTERNET-WiFi Crossplatform Communication System Ding Yong1, a , Zhang Lizhuo2,b and Hu Jian3,c (1School of Mathematics and Computational Science, Guilin University of Electronic Technology, Guilin, China ) (2 School of Information Science & Engineering, Central South University, Changsha, China) (3 Shenzhen Research Institute,City University of HongKong,Shenzhen, China) a dingyong1975@gmail.com, b zhanglizhuo@gmail.com, chebeidameng@gmail.com Keywords: 3G-INTERNET-WiFi; Crossplatform; Authentication and key agreement; Abstract.
HMAC:HMAC function, usually HMAC-SHA1-96; HMACU：MAC data generated by WeFun user; HMACP：MAC data generated by PG; KM：key material used to derive session keys; AK：authentication key; EK：encryption key; EPKx（m）：encrypting message m using the puclic key of x; EK(m)：encrypting message m using symmetric algorithm with the key K; 3.1 Phase 1 AKA Before phase 1 AKA, the user should have apply for one account and pre-share a password with PG.
The public key can be parsed from the public key certificate.
User decrypts EPKu(Ku,RP) to know Ku and RP with his secret key parsed from his own secret-key certificate.
Then user randomly generates a key Ku.

Journal of Civil Engineering, 2006, 39 (2) : 46-52 (in Chinese) [7] Yongqian Zhao.
Journal of civil engineering , 1993, 26 (3), 40-46 (in Chinese) [15] Zhou-hong Zong.
Smart Structure and Materials,1996, 2719(2):150-158 [17] M L Wangy, GHeoz.
Smart Structure and Materials,1998, (7):606-616 [18] Roberts S SJ, Davidson R.
Cure and fabrication monitoring of composite materials with fiber-optid sensor.

Research on Fiber Shotcrete for Underground Engineering HUANG Mina and PAN Bing-yub Department of Civil Engineering, Henan Institute of Engineering, Zhengzhou, China, 451191 a huangmin_2006@163.com, b pbyhnei@163.com Key words: fiber; shotcrete; underground engineering; research Abstract: The fiber material generally has higher tensile strength and toughness, which make up for the lack of tensile strength of concrete and the defects of drying shrinkage easily.
Due to its characteristics of materials and processes, shotcrete is widely used in underground engineering, building engineering reinforcement and protection, and make a good reinforcing effect and economic benefits.
Fiber reinforced concrete is composite material based on mortar or concrete with metal materials, inorganic fibers or reinforcing material.
Underground engineering is today one of the most widely used engineering for fiber reinforced concrete.
So, it is necessary to conduct a deeper research to further optimize the fiber Materials and concrete mix design, reduce cost, enhance the overall performance of concrete and better services for engineering design and construction.

Advanced Rapid Forming Technology For Remanufacturing Engineering Peijing Shia, Hongmei Wangb , Wei Zhangc and Binshi Xud National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering,Beijing 100072, China ashipj@163.com, bwanghongmei771104@yahoo.com.cn czhangwei18@sina.com, dxubinshi@vip.sina.com Key words: remanufacturing engineering; rapid forming; Abstract: Based on the foreign remanufacturing mode, the new remanufacturing rapid forming technology, which relies mainly on Surface Repair and Performance Improving Method has been explored and practiced.
Simply, remanufacturing engineering is the industrialization of high technology maintenance to the waste productions.
The important character of remanufacturing engineering is that the quality of the remanufactured productions is as same as or superior to those of the new productions, and the cost is only a half of the new one, saving energy 60%, saving materials 70%, and decreasing the bad influence to environments.
Recently, there are three advance surface engineering technologies used in remanufacturing forming.
Key Engineering Materials[J], 2008, 373-374: 43 [5] Wang Zhijian, Dong Shiyun, Xu Binshi et al.

The pipe materials must be insulated materials, which is to reduce heat loss and ensure another key technology of heating.
That is to say, specimen thickness is in actual use thickness or is greater than the minimum thickness of thermal properties about measured materials.
High temperature resisting insulation materials of the pipe The pipe heat preservation material can use glass tube.
（3）The key technology of this HDR heated supply system is mainly concentrated in two aspects: ①{TTP}9312 Thermal conductivity of rock, heat transfer ability between rock and water. ②{TTP}9313 The selection of pipe materials and keeping warm method, including material resist corrosive, strength, durability and thermal insulation
Then it could use improved glass steel pipe materials for the pipe insulation materials resisting high temperature.

The advanced material has been used extensively in various engineering in recent years, especially in the fuel-gas pipes.
So the leak detection has important meaning in the field test experiment of pipes’ material properties and the practical engineering.
The leak detection has important meaning in the field test experiment and practical engineering.
Advanced Materials Research.
Journal of Basic Science and Engineering, Vol. 16(2008), p. 280-286

Explore on Green Construction of the Construction Engineering Jiasheng Jin Urumqi Vocational University, China Email:853106030@qq.com Keywords: Green Construction; Construction Engineering; Construction Principle; Measures Recommended Abstract.
This paper expounds the connotation of green construction, the necessity of developing green construction, and probes into the construction of green in building engineering construction principle, carry out countermeasures and suggestions about how to put forward and speed up the construction of carrying out green in the construction engineering.
The four environmental means: and materials, water-saving, energy-saving, land and environmental protection.
In the preliminary stages of green construction on new technology, new equipment, new materials and new technology will produce a certain amount of uncertainty, leading to higher costs.
Implementation of green construction, minimize the venue interference, improve the utilization efficiency of resources and materials, and to increase the recycling of materials, etc., but the premise of using these means to ensure that the quality of the project.

Analysis on Development Status and Trend of Vehicle Materials Your Yanze Li 1,a, Zhi-hua Ding 2,b 1 Department of Electrical Engineering，Guangdong Baiyun University, Guangzhou,510450,Guangdong, China 2 Mechanical Engineering College, Jiu Jiang University, JiuJiang, 332005, JiangXi, China a 6519093@qq.com, bzhdean@sina.com Keywords: Vehicle engineering materials, Status quo analysis, Development trend Abstract.
Vehicle engineering materials are used in manufacturing of vehicle．
Plentiful developing rapidly new materials, such as macromolecule materials, compound materials, offer necessary condition to develop vehicle．
Catalyst is the key to ensure the desired effect of exhaust criteria.
The Fourth International Conference on e-Engineering and Digital Enterprise Technology (e-ENGDET), Leeds Metropolitan University(GB), 2004:22-34 [3] Wang Li, Lu Jiangxin.

Take time sequences of eight indexes (gross industrial output values of Manufacture of Raw Chemical Materials and Chemical Products, Manufacture of Medicines, Manufacture of General Purpose Machinery, Manufacture of Special Purpose Machinery, Manufacture of Transport Equipment, Manufacture of Electrical Machinery and Equipment, Manufacture of Communication Equipment, Computers and Other Electronic Equipment, and Manufacture of Measuring Instruments and Machinery for Cultural Activity and Office Work) as the reference sequences, which are labeled as X01, X02,... , X08, as shown in Table 1.
The top three factors are selected as the key service factors.
The first class industry is Manufacture of Raw Chemical Materials and Chemical Products(X01) and Manufacture of Medicines(X02).
Compared with other industries, Manufacture of Raw Chemical Materials and Chemical Products(X01) and Manufacture of Medicines(X02) are more dependent on the support of scientific research, technological services, and the business services, and the demand of Manufacture of Raw Chemical Materials for scientific and technical services is particularly urgent.
Value Creation Based Value Network Management (I):Characteristics and Formation．Journal of Engineering Management 2001(4): 38-41 [4] Wu Haiping, Xuan Guoliang.

The Study of the Architectural Beam Construction Cracks’ Condition on the Features of the Force-Electricity Functional Conversion Composite Materials Xiaoyun Gao 1,a, Xu Ma 2,b，and Qingsuo Liu 3,c, 1 Tianjin Chengjian University, Tianjin 300384, PRC 2School of materials science and engineering, Tianjin University of Technology, Tianjin 300384, PRC agaoxiaoy_610@163.com, bmaxumax@163.com, cqingsuoliu@eyou.com, Keywords: Smart material, Sensing, engineering structure, safety monitoring Abstract.
A solution to monitor the construction engineering structure operation state with the features of composite materials is tried in this paper.
Experiment The Preparation of the Composite Material Ferroelectric ceramics as force - electricity conversion function materials with a high performance, possess the characteristics of fast stress response and wide frequency response range, are considered as one of the most promising engineering sensing materials [8].
CHINA CIVIL ENGINEERING JOURNAL. 2000, 33(4): 1-5.
CHINA CIVIL ENGINEERING JOURNAL. 2006, 39(2): 46-52.