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Assembly Sequence Generation and Optimization for Compliant Assemblies Based on Genetic Algorithm Yan-feng Xing a, Yan-song Wang b, Xiao-yu Zhaoc School of Automotive Engineering, Shanghai University of Engineering Science, Shanghai, 201620 a xyf2001721@sina.com.cn, b jzwbt@163.com, c zhaoxiaoyu@sues.edu.cn Key words: Assembly sequence, compliant assembly, genetic algorithm, optimization Abstract.
Mutation is applied to alter the genetic material of a very small number of individuals in a random number, enhancing the diversity of the population and expanding the volume of the current search space.
Acknowledgement This work was supported by Shanghai university scientific selection and cultivation for outstanding young teachers in special fund (gjd09015), the national natural science foundation of china (51045007), Shanghai Natural Science Foundation(11ZR1414700) and Dr start-up fund research of Shanghai University of Engineering Science.
Chen: Journal of Mechanical Design, Vol. 127(2005), p. 347

The Study on the Communication of the Multi-robot Polishing system by the ACO Mode Miao Yu1,a, Xin An2,a,Jing Ji2,a 1Changchun University, Jilin Changchun, China 2Changchun University of Science and Technology Institute of Mechanics Engineering, Jilin Changchun, China aMiao263@163.com Keywords: Multi-robot communication; ACO(ant colony optimization) mode; Blackboard structure Abstract.
Figure 1 The system of multi-robot Strategy of the cooperation for the robot polishing system with the ant colony optimization By means of a material that is called a pheromone, an ant can guide its direction of motion in the foraging.
Acknowledgement This research is sponsored by the fund of Jilin Science Commission (201215114).
[3] Zhang Jie: Multi-Agent technology application In the advanced manufacturing (Science press, Beijing 2004), in Chinese
[7] LI Yu-jian, LIU Guo-dong: Journal of Southern Yangtze University(Natural Science Edition) Vol.16(2007), p. 132-135

Application of the Fuzzy-AHP Method in Bridge Crane Safety Evaluation Gang Shen1,a, Dong Xiang1,b, Nan Liu2,c, Peng Mou1,d and Yong Yang3,e 1Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China 2POL Research Institute of General Logistics Department of PLA, Beijing 102300, China 3College of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China ashengangxz@gmail.com, bxd@mail.tsinghua.edu.cn, cliunanchina@gmail.com, dmoupeng@mail.tsinghua.edu.cn, eyang816yong@qq.com Keywords: Bridge crane, Membership grade, Weight coefficient, Safety evaluation, Fatigue test Abstract.
Table 1 Evaluation index factors of bridge crane Layers Factors Target layer F-Safety grade of main girder Criteria layer V1-Working environment V2-Design parameter V3-Manufacturing technology V4-Maintenance Index layer M11-Environment temperature M21-Dynamic stiffness M31-Material quality M41-Service time M12-Environment humidity M22-Static stiffness M32-Welding quality M42-Maintenance frequency M13-Acid-base property M23-Camber M33-Stress distribution M43-Operating M14-Corrosion degree M24-Horizontal bending M34-Crack surface M44-Loading M25-Stress amplitude M35 -Machining error M45-Lifting position M26-Web buckling M46-Working frequency M27-Maximum stress The target layer is F, namely safety grade of main girder.
Acknowledgment It is a project supported by National Natural Science Foundation of China(Project No. 51205221 and No. 51275258), and the National Science and Technology Support Program(Project No.2011BAF11B02).
Journal of Safety Science and Technology, 2011,No.2

Research on Outdoor Positioning Based on Ray Tracing Method Xianqiang Peng College of Computer Science and Technology, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China pxq198411@yeah.net Keywords: Ray tracing, Outdoor Positioning, Path Loss.
In fact, the outdoor cell environment is very complex in the practical situations, involving multiple regions positioned cell, and the shape, height, and material in each cell is not identical to the building, which will more or less affect the results of tracking radiation.
Acknowledgements This work was partly supported by the National Scholarship Fund, the Natural Science Foundation of Chongqing (No. cstc2012jjA40064) and the National Natural Science Foundation of China (No. 61075019).
Cao: submitted to Chinese Journal of Radio Science (2002)

The research object of statistics is the quantity relationships and quantity features of objective things, which is about the data collection, data sorting, data induction and data analysis methodology science.
Statistical analysis of the necessary conditions needed the systemic, perfect material.
Bad projects questionnaire is used to investigate what occurred in bad projects and the ratio of each project; Bad reason questionnaires can stratified investigation according to the process that affect person, machine, materials and method, ring insignia, order to find out the reasons for the situation occurred; Process distribution questionnaire is a table which is used to survey processes of various quality characteristic frequency.
[3] Kay Thwe, Gao Gao, Naing Thiha Soe, in: Current Welding Technology in Myanma, volume 6 of Progress in Journal of American Science (2010)
[4] Jianwei Yue and Peng Bao, in: Analysis Model of Fiber Plasterboard Filled with Reinforced Concrete, edited by Proceedings of the 1st International Conference on Enhancement and Promotion of Computational Methods in Engineering Science and Mechanics (2006)

Guangdong Science and Technology Exchange Center, Guangdong Guangzhou, 171 Lianxin Rd. 510033, China acjwuyi@126.com, bruanjl@126.com, cwuweiweistec@126.com Keywords: rubber roll husker; working parameters; husker capacity; optimization Abstract: In rice processing courses, the working parameters of rubber roll husker, including contact pressure between rolls, inlet flow, fast roll linear speed and linear speed difference, will affect the husker capacity.
Therefore, under the premise of keeping high steady husking rate and decreasing raw broken rate, it is important to investigate the working parameters’ influences on the husker capacity in order to rise the production rate per machine, lower the processing cost, and ensure qualified technological performance. 1 Material and Method 1.1 Experimental Material and Equipment The raw material was mid-class early long-grain non-glutinous rice with 13% moisture rate.
[2] Yi Wu, Jinglan Ruan, Journal of Henan University of Technology(Natural Science Edition).33(5) (2012)83-88, In Chinese
[10] M.Mourabe, A.El hilassi, H.El Boujaady, etc, Applied Surface Science, 258(2012) 4402–4410.

It will consequentially result in more cutting heat, diminish the yield strength of the material, and eventually bring in larger plasticity distortion.
Acknowledgment The authors gratefully acknowledge both the National Natural Science Foundation of China (50535020) and the Natural Science Foundation of Heilongjiang Province (E2004-26) for their financial supports of this work.
Journal of the Japan Society Precision Engineering.
Materials Science Forum.

In 2002, Lorant et al developed the Smile-Agent system, described the overall model of workshop layout by three levels of the production, inventory and material handling[7].
In the workshop layout, there are different layout models and methods due to different target, the most common target is to minimize the logistics cost (material flow cost) of the whole workshop.
The project supported by Zhejiang Provincial Natural Science Foundation of China (No.
[2] Xu Guozhi: System Science (Shanghai Science and Technology Education Press, Shanghai 2006)
Production Economics 59(1999), p.443-453 [5] Petrovic Dobrila, Roy Rajat, Petrovic Radivoj: Europe Journal of Operational Research Vol.109(2000), p.299-309 [6] Petrovic Dobrila: Int.

Modification Mechanism of the ZTA Ceramic Powders with Stearic Acid Xiao-bei HOU1,2,a, Jian-zhong XIAO3,b, Feng XIA3 , Qi ZHANG4, Dong-yi Zhou 1 University of Shanghai for Science and Technology, Shanghai 200093,China 2 Shanghai Medical Instrumentation College, Shanghai 200093,China 3 Huazhong University of Science and Technology, Wuhan 430074, China 4 School of Materials Science and Engineering, University of South Wales, Australia a sherry.xbhou@gmail.com, b jzxiao@126.com Keywords: zirconia-toughened alumina, stearic acid, dispersibility, modification, mechanism.
Therefore, ZTA has been regarded as the next generation orthopedic graft material due to its excellent mechanical properties and biocompatibility[5].
[7] R.Metselaar, R.Reenis, M.Chen, H.Gorter & H.T.Hintzen: Journal of the European Ceramic Society Vol. 15(1995), p.1079-1085

From teaching methods the point of view, the existing Java language teaching, curriculum and teaching materials are basically in accordance with the order of chapters teaching, but because the object-oriented Java language features, and project development needs Java language, making the Java language as an organic whole, so the Java language artificially divided into chapters and knowledge points, resulting in students often "saw wood for the trees", even if each knowledge point are a good school and cannot complete a simple project development.
Journal of Science of Teachers' College and University, 2005, 25 (2): 79 - 80 [4] Lian Shibin, Zhu Xiaodong.
Briefly Discussion on Java Introduction, Reform – Promote the Ability Cultivation Through Teaching Practice, Journal of Beijing Agricultural College, 2007.