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A New Similitude Analysis Method for a Scale Model Test Xianyue Gang1, 2, 3, a, Dengfeng Wang1, b, Xuejun Su1, c 1 College of Automobile Engineering, Jilin University, Changchun, China 2 School of Traffic and Vehicle Engineering, Shandong University of Technology, Zibo, China 3 Zhongtong Bus Holding Co., Ltd, Liaocheng, China a gangxianyue@sdut.edu.cn, bcaewdf@jlu.edu.cn, c8332299@163.com Keywords: scale model, FEM, FRF, similitude relationships, load scale rules Abstract.
The key point of this procedure is to establish the similitude relationship of modal parameters, frequency response functions and response characteristics between the scale model (SM) and the full size model (FSM).
(5) Supposing the SM and FSM have same material properties and similar boundary conditions, and their three dimensional sizes have a same scale ratio FS / LL=λ .
Because the SM and FSM have same material properties, they must have the same physical matrix FS DD = .

The selection of perfect performance passivating materials is the key of In situ passivation technique [6-8].
Materials and Methods 2.1 Experimental materials Nano-sized black carbon particles (nano black carbon) was purchased from Jinan Tailong Plastic Technology Co.
Journal of Hazardous Materials, 174 (2010) 34-39
Advanced Materials Research, 529 (2012) 579-584 [21] J.M.
Transactions of the Chinese Society of Agricultural Engineering, 36 (2020) 125-133.

Wang e Department of Physics and Electronic Engineering, Taizhou University, Taizhou, 318000, China ashuangxixue@126.com, bfss@tzc.edu.cn, ccpy@tzc.edu.cn, dlqt@tzc.edu.cn, ewhb@tzc.edu.cn Key words: Ni-Mn-Ga alloy; Ferromagnetic shape memory alloy; Martensitic transformation Abstract.
As a promising material which has potential applications in magnetic sensors and actuators, it is desirable for excellent mechanical properties.

A Measuring Method of Flexible Bar based on Machine Vision Shaowei Liu1,a, Wu Liu1,b, Guoqing Ding1,c, Xin Chen1,d 1Department of Instrument Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, China 200240 aanry@sjtu.edu.cn, ballenlau@sjtu.edu.cn, cgqding@sjtu.edu.cn, dxchen.ie@sjtu.edu.cn Keywords: Flexible Bar, Machine Vision, Finite Element Analysis, Thickness, Bending Rigidity Abstract.
Introduction Flexible bar is the key part of the flexible accelerometer, and its properties will influence the precision and stability of the meter directly.
In the model, the settings of modeling are as following: the flexible bar’s diameter is 1.6 mm; its length is 19.2 mm; the thickness of thin neck is 20 mm, and the distances between the position of the minimum thickness and two endpoints are 10.8 mm and 8.4 mm; its material is beryllium bronze; its density is 8.3 g/cm3; its Young modulus is 133 GPa; its Poisson's ratio is 0.4.

Many teachers put teaching contents, reference material, homework exercises on the Internet in order to convenient students' autonomous learning.
For the complex graphics, engineering and production process that some of the traditional teaching method is hard to show , using computer simulation technology and audio technology, make the teaching contents directly to students to make students more easy to understand and accept, reached the twice the result with half the effort.
The second is mathematics teaching content with the inherent logic of curriculum content system, the organization shall facilitate learners on the whole course of the system structure, and conform to the learner's cognitive law, in the difficult key points provide various forms study content and multi-level exercises and provide re-designed; Third, interactive, mathematics learners according to their own interest or the needs of the learning content (such as the example of the parameters, etc.) to modify or change the route of learning knowledge points; Fourth, the establishment of online virtual labs, make mathematics Distance Learners in the network implementer visual operations, make the pre-experimental work for the kind of learners of mathematics curriculum, while providing courses answering system, discussion system, the operating system.

The Self-decay Characteristics of Chlorine Dioxide in Water Xinjie Lia, Danan Jiangb, Yuejun Zhangc School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China alxjnust@163.com, bjdan001@163.com, czhyuejun@njust.edu.cn Keywords: chlorine dioxide; self-decay; kinetics; tap water treatment Abstract.
The ClO2 dosage is the key to ensure the treatment effect of these three stages.
Experimental Procedure Material. 0.01mol·L-1 NaOH solution, 0.01mol·L-1 hydrochloric acid, different phosphate buffer solutions of pH=4~9, and iodometric analysis reagents, etc.

A Forecast Optimization method based on Multi-Echelon Supply Chain Yang Song1, a,Shi PengHui2,b, Chi JianWei3,c 1Dalian Ocean University, Educational technology & Computing Center 2Dalian Ocean University, College of information engineering 3Dalian Ocean University, College of science aocean_epoch@163.com, blxq@dlou.edu.cn, csph@dlou.edu.cn Keywords:Forecast, Supply Chain, Multi-Echelon Abstract:Many traditional forecasting platforms try to make predictions about the future by analyzing patterns that occurred in the past.More sophisticated methods exist, such as exponential smoothing or the Holt-Winters method.
A typical supply chain may involve a variety of stages from raw material suppliers to consumers.
While the regression’s statistical significance is reassuring, this isn’t the key performance measure we’re interested in.

A New Digital Video Watermarking Algorithm Ren Xiang-jun1,2, a , Wei Zhi-qiang1,b, Liang Zuo-juan1,c, Zhang Wei-jie3,d, Dong Yun-gang 4,e 1College of Information Science and Engineering, Ocean University of China, Qingdao, Shandong, China 2Qingdao TV Station, Qingdao, Shandong, China 3Haier White Goods Group, Qingdao, Shandong, China 4 China Unicom Weifang Branch, Weifang, Shandong, China arxj_1110@126.com, bweizhiqiang@ouc.edu.cn, clzuojuan@ouc.edu.cn, dzhangwj@haier.com, eDongyungang@gmail.com Keywords: video watermarking; MPEG-4 streams; information compression Abstract.
For another part, if the removed pixels are too many, especially if some key points are removed, the main features of original image will be changed.
This is the LONG GOP material local high speed temporary decoding method that all non-compiled edition use.

A New Application Research Of Time-base Following Control In Non-circular Contour Turning Lathe Xiaopeng YAO 1, a, Xiangying YAO 2, b and Fan ZHU 3, c 1 Key Laboratory of Testing Technology for Manufacturing Process (Ministry of Education),Southwest University of Science and Technology, Mianyang 621010, China 2The Jinchuan group machine manufacture the Limited company, Jinchang Gansu 737100, China 3Jichuan Wan-Fang industry Limited liability Company, Jinchang Gansu 737100, China axp_yao@126.com, bzytruth@yahoo.com.cn, c281820242@qq.com Keywords: Non-circular turning with a lathe, open CNC, time-base following control.
This paper describes a new type of open CNC system based on PMAC(programmable multi-axis card).Open-architecture CNC control systems are demanded for modern intelligent metal material processing.
[6] J.Han: submitted to Control Engineering of China, 2004, Vol 9, No.3:13-18.

Through the dynamic detection of geographic information system, the researchers can use different population density distribution, and then compare their differences in sports facilities configuration; the researchers can use specific individuals and groups around the anchor point to generate a series of buffers too, to study the general characteristics of the sports facilities in different areas. 3 Data preparation Data is the key to project success or not, project cannot be completed if there is no real and accurate data.
(4) The system management module System management module mainly achieves the background management functions of health service platform, such as user management, system configuration, database backup, etc. 5 Conclusion As people increase material life, thirst for health becomes more and more strong, the health will become the new century people's basic goal, the pursuit of health has become everyone's style.
Journal of disasters and prevention and control engineering, 2009, 1 (66) : 60-61