中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共8条,第1-8条 帮助

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Evaluating the Performance and Stability of the Highway Subgrades in Seismic Events, a Case Study of the Changning Earthquake, Sichuan 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 2022, 卷号: 19, 期号: 21, 页码: -
作者:  
Cui, Zhen;  Zhang, Maochu;  Wu, Kai;  Ma, Hongsheng
  |  收藏  |  浏览/下载:9/0  |  提交时间:2023/08/02
An Experimental Study on the Dynamic Evolution Characteristics of Soil Arching and the Rational Spacing of Anti-Slide Piles 期刊论文  OAI收割
SUSTAINABILITY, 2022, 卷号: 14, 期号: 14, 页码: 15
作者:  
Zhong, Wei;  Zhang, Shuai;  He, Na
  |  收藏  |  浏览/下载:20/0  |  提交时间:2022/09/30
The Influence of Infilling Conditions on Flaw Surface Relative Displacement Induced Cracking Behavior in Hard Rock 期刊论文  OAI收割
ROCK MECHANICS AND ROCK ENGINEERING, 2019, 期号: -, 页码: 22
作者:  
Pan, Peng-Zhi;  Miao, Shuting;  Jiang, Quan;  Wu, Zhenhua;  Shao, Changyue
  |  收藏  |  浏览/下载:16/0  |  提交时间:2021/05/25
A Straightforward Direct Traction Boundary Integral Method for Two-Dimensional Crack Problems Simulation of Linear Elastic Materials 期刊论文  OAI收割
CMC-COMPUTERS MATERIALS & CONTINUA, 2019, 卷号: 58, 期号: 3, 页码: 761-775
作者:  
Zhang, Chao;  Yang, Chunhe;  Wu, Shangwei;  Zhang, Xiaolong;  Nie, Wen
  |  收藏  |  浏览/下载:27/0  |  提交时间:2020/04/08
Preliminary study on determination of reasonable ratio of spacing to diameter of double tunnels under earthquake 会议论文  OAI收割
Zhuhai, PEOPLES R CHINA, MAR 11-12, 2017
作者:  
Zhou Yongqiang;  Sheng Qian;  Leng Xianlun;  Fu Xiaodong;  Li Nana
  |  收藏  |  浏览/下载:27/0  |  提交时间:2018/06/05
Analysis on Response of a Single Pile Subjected to Tension Load Using a Softening Model and a Hyperbolic Model 期刊论文  OAI收割
MARINE GEORESOURCES & GEOTECHNOLOGY, 2015, 卷号: 33, 期号: 2, 页码: 167-176
作者:  
Zhang, Qian-Qing;  Li, Shu-Cai;  Zhang, Qian;  Li, Li-Ping;  Zhang, Bo
  |  收藏  |  浏览/下载:65/0  |  提交时间:2018/06/05
The study of mapping relation of aeroplane complex motion and image movement and compensation technique (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Computer Application and System Modeling, ICCASM 2010, October 22, 2010 - October 24, 2010, Shanxi, Taiyuan, China
Wei Z.; Wang Y.-Y.; Xue W.-Q.; Dai M.
收藏  |  浏览/下载:20/0  |  提交时间:2013/03/25
In order to solve the problem of image blurring due to the image motion which results from the aircraft's motion  attitude changes  and the relative motion of the camera and aircraft firstly  we install linear displacement transducer on the four shock absorbers. By analyzing the displacement values  the geometrical relationship between the camera and the aircraft is acquired  then relative motion amount between the object and the aircraft is obtained according to the motion and attitude changes. After that  making use of geometrical relationship  we can calculate the displacement variation of pixels within the camera exposure time. Thereafter  taking consider variable motion and non-linear motion as uniform motion in a straight line at the moment of imaging  then the model of the blurring image can be established according to the displacement variation of pixels within the camera exposure time  and fuzzy point spread function in the two-dimensional movement is built. By using Wiener filtering method with the optimal window  the image blurring is eliminated in aerial imaging system. Practice proved that this method can effectively eliminate the image blurring in the aerial imaging system. 2010 IEEE.  
Study of high precision non-contact measurement based on CCD (EI CONFERENCE) 会议论文  OAI收割
4th International Conference on Information Technology and Applications, ICITA 2007, January 15, 2007 - January 18, 2007, Harbin, China
Lin L.; Yun F.
收藏  |  浏览/下载:22/0  |  提交时间:2013/03/25
In this paper a method that measures relatively positionrelationshipquickly and accurately between two vehicles both on a horizontal plane is introduced. When the linear CCD camera placed on the end of manipulator scans two point targets located on the other vehicle  by virtue of the spatial intersection principle and trigonometry theorem  the relative position relationship between the loading vehicles and launching ones can be gotten(i.e. the spatial coordinate parameters of x  y  z and the angle displacement ). At the same time the paper establishes that the measurement error of length is less than 1mm  by analysis of thee rror analysis and the simulation of computer. The angle displacement is less than 3  which satisfies the technical requests. So the vehicle orientation and loading missiles can be both done at the shortest time. It meets the demand of centralization between the measurement and execution. Forboth automatic transshipment and spatial position relationship measurement  the study is valuable. And the manipulator is measure device as well as executive one so that residual inherent error decreases according to identical reference principle. Therefore the measure precision can be improved greatly.