中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共8条,第1-8条 帮助

条数/页: 排序方式:
Superelevation analysis of the debris flow curve in Xiedi gully, China 期刊论文  OAI收割
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2020, 页码: DOI: 10.1007/s10064-020-01999-1
作者:  
Wang, Zhuang;  You, Yong;  Zhang, Guangze;  Feng, Tao;  Liu, Jinfeng
  |  收藏  |  浏览/下载:23/0  |  提交时间:2020/12/10
Calculating debris flow density based on grain-size distribution 期刊论文  OAI收割
LANDSLIDES, 2019, 卷号: 16, 期号: 3, 页码: 515-522
作者:  
  |  收藏  |  浏览/下载:34/0  |  提交时间:2019/04/15
Measurement error analysis of binocular stereo vision: effective guidelines for bionic eyes 期刊论文  OAI收割
IET SCIENCE MEASUREMENT & TECHNOLOGY, 2017, 卷号: 11, 期号: 7, 页码: 829-838
作者:  
Wang, Qingbin;  Yin, Yingjie;  Zou, Wei;  Xu, De;  Yin YJ(尹英杰)
  |  收藏  |  浏览/下载:43/0  |  提交时间:2018/01/04
The approximate calculation of atmospheric path radiance in close range and horizontal direction (EI CONFERENCE) 会议论文  OAI收割
2012 International Conference on Sensors, Measurement and Intelligent Materials, ICSMIM 2012, December 26, 2012 - December 27, 2012, Guilin, China
作者:  
Sun Z.;  Chen Y.;  Zhang Y.
收藏  |  浏览/下载:31/0  |  提交时间:2013/03/25
Atmospheric path radiance is the key factor in the accuracy of objective radiation measurement. In the traditional radiation character measurements  it is compared with the results of MODTRAN and measurement in experiment. It is revealed that the accuracy of software is 7.8%  under the help of the atmospheric observation equipment  and the formula is 4.9%  MODTRAN and other software likewise  which could demonstrate the validity of the pproximate calculation formula in close range and horizontal direction. In this article  the indeterminacy rate could be around 10~20%  in the process of deducing and experiment  it is highly restricts the measurement accuracy of objective radiation. For this reason  the validity of the approximate calculation formula in close range and horizontal direction is fully proved  it is quite significant to develop the study of measure and calculation in path radiance. The approximate calculation formula for path radiance in close range and horizontal direction is expressed in this article  which supply a new method in approximate calculation of path radiance for objective radiation measurement. (2013) Trans Tech Publications  Switzerland.  
Transferring error analysis of reflex light-tube in azimuth aiming system (EI CONFERENCE) 会议论文  OAI收割
2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012, October 28, 2012 - October 29, 2012, Hangzhou, China
作者:  
Zhao Y.;  Zhao Y.;  Zhao Y.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
Design of aspherical surfaces for panoramic imagers using multipopulations genetic algorithm (EI CONFERENCE) 会议论文  OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
作者:  
Jin C.-S.;  Wang L.-P.;  Liang Z.-Z.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25
A design method of aspherical surface for panoramic imaging system with two mirrors using multi-populations genetic algorithms is proposed. Astigmatism induced by mirrors may significantly compromise image resolution. To solve this problem  we induced algebraic expression of astigmatism in panoramic imager based on generalized Coddington equation and theory of geometric optics. Then  we propose an optimization process for mirror profile design to eliminate astigmatism and provide purposely-designed projection formula with aid of MPGA. A series of polynomial expressions of aspherical surfaces are obtained and procedures of the design are presented. In order to facilitate ray tracing and aberration calculation  even asphere surface model is obtained by using of hybrid schemes combining MPGA and damped least squares. Finally  a prototype of the catadioptric panoramic imager has been developed and panoramic ring image is obtained. 2009 SPIE.  
The influence investigation of laser cutting path on the resistance of chip resistors (EI CONFERENCE) 会议论文  OAI收割
Lasers in Material Processing and Manufacturing II, November 10, 2004 - November 12, 2004, Beijing, China
作者:  
Wang Z.;  Wang Z.
收藏  |  浏览/下载:17/0  |  提交时间:2013/03/25
Calculation formula for apparent electrical resistivity of high porosity metal materials 期刊论文  OAI收割
Science in China Series E-Technological Sciences, 1999, 卷号: 42, 期号: 3, 页码: 294-301
P. S. Liu; C. Fu; T. F. Li
收藏  |  浏览/下载:10/0  |  提交时间:2012/04/14