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The Journal of Grey System, 21-2(2009) 149-166
D (1989), "Introduction to Grey System Theory", Journal of Grey System, 1-24
"Analysis and Forecast of Road Traffic Safety Improvement in Netherlands", ARS Traffic & Transport Technology, 1-14
Yue (2007)," Forecasting Model Of Urban Traffic Accidents Based on Grey Model-GM (1, 1)", Institute of Computer, Chongqing Institute of Technology, 438-441
X (2010), "Application of Composite Grey BP Neural Network Forecasting Model to Motor Vehicle Fatality Risk", Second International Conference on Computer Modeling and Simulation, 236-240.

Asami[5] has also established the evaluation indicators from safety, health, convenience, comfortability and sustainability.
YIN Weihong and ZHANG Wenzhong, et. al. have investigated the subjective feelings from living convenience, safety, comfortability of natural and cultural environments, travel convenience and level of health to evaluate the distribution of livability in Beijing.
L.”Principles for the Livable City”in Lennard, S, H, Svon Ungern- Sternberg,H, L, Making Cities Livable.International Making Cities Livable Conferences.
Omuta: Social Indicators Research Vol. 20(4)(1998),p.417 [5] Asami,Y: Residential Enviroment: Methods and Theory for Evaluation(University of Tokyo Press,2001) [6] Ai Sakamoto ,Hiromichi Fukui:Journal of Geographical Systems Vol. 6(2004),p. 175 [7] LI Yejin, ZHANG Wenzhong, TIAN Shanchuan, YU Jianhui.
Vo l.33 ,No.1(2008),p.126-129(In Chinese)   [23] Quan Shaoli,Liu Yangjie.Evaluation of Livability on China’s Major Cities.Journal of Shanxi Normal University(Natural Science Edition),Vol.24,No.2(2010),p.112-116(In Chinese) [24] Jacek M:International Journal of Applied Earth Observation and Geoinformation Vol.18( 4)(2006),p. 270

The Study of Electromechanical Brake Device Based on the Ball Screw Dong Guan1,a, Xiaohui Yang1,b, Geng Liu1,c, Ruiting Tong1,d, Shangjun Ma1,e 1School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, China ag1987d@sina.com, byangxh@nwpu.edu.cn, cnpuliug@gmail.com, dtongruiting@nwpu.edu.cn, emsjlxy888@163.com Keywords: vehicle, active safety, electromechanical brake, ball screw Abstract.To improve the car's active safety, studies on electromechanical brake (EMB) system have been taken in recent years.
Researches indicate that 40% of traffic accidents has relationship with the braking system's performance [2].
Lee: SICE-ICASE International Joint Conference 2006, p. 1513 [7] A.
Jin: Journal of Jiangsu University(Natural Science Edition).

All the upper limit of the HIC value was the safety limit 1000.
International Conference on the Enhanced Safety of Vehicles (ESV), Paper # 2001
Beijing: The publishing house of people’s traffic, 2001
Chinese Journal of Mechanical Engineering, 2007, 43(8): 142-147.
Journal of Hunan University (Natural Sciences), 2010, 37(12): 91-96.

The higher indoor CO in DCC near industrial and DCC near main road appears to be influenced mainly from the outdoors due to traffic emission [10].
References [1] Department of Safety and Health (DOSH).
Indoor air quality at school: Ventilation rates and it impacts towards children - A review. 2nd International Conference on Environmental Science and Technology, IPCBEE, IACSIT Press, Singapore
Kungskulniti, Asia Journal of Public Health Vol. 2(1) (2011) 3-12
Jaakola, Environmental International Vol. 19 (1993) 109-119

Parallel PSO-based optimal strategy study of energy efficient operation control for train Hui Hu1,2, a 1 State Key Laboratory of Rail Traffic Control and safety, Beijing Jiaotong University, P.R.China 2Economics and Management School, East China Jiaotong University, P.R.China ahh24895@163.com Keywords: energy efficient, parallel PSO algorithm, optimal strategy, operation control.
Acknowledgements Thanks for National High Technology Research and Development Program (2011AA110502); State Key Laboratory of Rail Traffic Control and Safety of Beijing Jiaotong University Program (RCS2010ZZ001).
Journal of Transportation Systems Engineering and Information Technology. 9 90-96 [5] Hu Hui, Fu Y P and Hu Chao 2010.
IEEE 17th International conference on IE&EM (Xiamen, P.R.China,29-30 Oct 2010)（IEEE Vol 2）(IEEE press) pp1560-1563 [6] Huang Fang, Fan X P 2006.

Introduction Nowadays, one of the main concerns in traffic safety is the improvement of the vehicle crashworthiness.
Jones: International Journal of Impact Engineering Vol. 2(3) (1984) p. 263 [3] W.
Jones: International Journal of Impact Engineering Vol. 2(2) (1984) p. 179 [4] W.
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Therefore, correlation dimension effectively indicate the state of the system. 3.Chaos of Bridge Structure and Chaotic indexes of Monitoring Information 3.1 Masangxi bridge’s health monitoring system Chongqing Masangxi bridge was opened to traffic in December 2001.
By means of time series, the chaotic indicators to the assessment and prediction of bridge safety.
International Journal of Solids and Structures, 2004, 41:5677-5695
[2] BogaertVan.Dynamic: Response of Trains Crossing Large Span Double-track Bridges[J].Journal of Construction Steel Research,1993,24(1):575-74
[4] A.V Pesterev, B Yang, L.A Bergman, C.A Tan:Response of elastic continuum carring multiple moving oscillators[J].Journal of Engineering Mechanics,2001,127(3):260-265 [5] HAN Min, chief author.

The vertical displacement difference which is obvious will directly influence the driving smooth and if serious, it will influence the driving safety.
But these methods are confined by the effect of the traffic and the local conditions.
It can ensure the long-term and reliable mechanical properties and realize the operating safeties of the bridge after broaden
Structural Engineering International 4(2008), p.351 [3] Wen Qingjie and Ye Jianshu: The shrinkage and creep analysis of the transverse joining of the new and existing reinforced concrete.
Journal of Southeast University. 14(2006), p.596 [4] Wu Wenqin, Ye Jianshu, Ju Jinping etc: The broaden situation and scheme analysis during the extension of the highway.

Benedetto, A decision support system for the safety of airport runways: the case of heavy rainstorms.
OCEESA JOURNAL. 23 (2006) 63-69
ASCE Journal of Environmental Engineering.
Journal of Environmental Engineering. (2011) [43] B.
International Journal of Mineral Processing. 74 (2004) 343-357