中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR 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23条，第1-10条 帮助

条数/页： 排序方式：
Unascertained Measure-Set Pair Analysis Model of Collapse Risk Evaluation in Mountain Tunnels and Its Engineering Application 期刊论文  OAI收割
KSCE JOURNAL OF CIVIL ENGINEERING, 2020, 页码: 17
作者:  Chen, Wu;  Zhang, Guohua;  Jiao, Yuyong;  Wang, Hao
  |  收藏  |  浏览/下载：36/0  |  提交时间：2021/05/25
Evolution process and obstacle factors of ecological security in western China, a case study of Qinghai province 期刊论文  OAI收割
ECOLOGICAL INDICATORS, 2020, 卷号: 117, 页码: 8
作者:  Fan, Yupeng;  Fang, Chuanglin
  |  收藏  |  浏览/下载：23/0  |  提交时间：2021/03/18
Evolution process and obstacle factors of ecological security in western China, a case study of Qinghai province 期刊论文  OAI收割
ECOLOGICAL INDICATORS, 2020, 卷号: 117, 页码: 8
作者:  Fan, Yupeng;  Fang, Chuanglin
  |  收藏  |  浏览/下载：17/0  |  提交时间：2021/03/18
Impacts of future climate change (2030-2059) on debris flow hazard: A case study in the Upper Minjiang River basin, China 期刊论文  OAI收割
JOURNAL OF MOUNTAIN SCIENCE, 2018, 卷号: 15, 期号: 8, 页码: 1836-1850
作者:  Li Ming;  Tian Cong-shan;  Wang Yu-kuan;  Liu Qin;  Lu Ya-feng
  |  收藏  |  浏览/下载：36/0  |  提交时间：2018/09/25
Impacts of future climate change (2030-2059) on debris flow hazard: A case study in the Upper Minjiang River basin, China 期刊论文  OAI收割
JOURNAL OF MOUNTAIN SCIENCE, 2018, 卷号: 15, 期号: 8, 页码: 1836-1850
作者:  Li Ming;  Tian Cong-shan;  Wang Yu-kuan;  Liu Qin;  Lu Ya-feng
  |  收藏  |  浏览/下载：18/0  |  提交时间：2020/10/15
Quantification of Symmetry 期刊论文  OAI收割
COMMUNICATIONS IN THEORETICAL PHYSICS, 2016, 卷号: 65, 期号: 4, 页码: 423-433
作者:  Sun, CP;  Fang, YN;  Dong, GH;  Zhou, DL;  Sun, CP (reprint author), Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China.
  |  收藏  |  浏览/下载：27/0  |  提交时间：2017/10/13
Templates selection in non-overlapping template matching test 期刊论文  OAI收割
ELECTRONICS LETTERS, 2016, 卷号: 52, 期号: 18, 页码: 1533-1534
Chen, MH; Chen, H; Fan, LM; Feng, DG
  |  收藏  |  浏览/下载：32/0  |  提交时间：2016/12/09
Theoretical study on angular distribution and polarization characteristics of X-ray emission following dielectronic recombination of lithium-like ions 期刊论文  OAI收割
ACTA PHYSICA SINICA, 2013, 卷号: 62
作者:  Wang Jin-Xia;  Shi Ying-Long;  Zhang Deng-Hong;  Xie Lu-You;  Dong Chen-Zhong
  |  收藏  |  浏览/下载：97/0  |  提交时间：2018/07/05
Roughness analysis of optical surfaces by X-ray scattering (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Electronics and Optoelectronics, ICEOE 2011, July 29, 2011 - July 31, 2011, Dalian, China
作者:  Chen B.;  Chen B.
收藏  |  浏览/下载：25/0  |  提交时间：2013/03/25
A grazing incidence x-ray scattering (XRS) method  Order perturbation theory (FOPT)  is stated briefly and an experimental facility based on an improved X-ray diffraction has been introduced  which can work with high performance. The x-ray scattering distributions of two super smooth silicon samples measured at the incidence angle 0.2 degree  as the x-ray wavelength is 0.154 nm  have been given and analyzed by the FOPT to give information about the surface profiles. As a comparison  the root mean square (RMS) surface roughness  grey-scale maps and one-dimensional power spectral density (1D PSD) have been derived from the atomic-force microscope (AFM) data. The results evaluated by FOPT are in good agreement with that of AFM  which indicates that x-ray scattering method is a practical characterization for the investigation of super smooth surfaces. 2011 IEEE.  
The imaging system design of three-line LMCCD mapping camera (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
作者:  Zhao Y.;  Yu D.;  Yu D.;  Zhao Y.;  Zhao Y.
收藏  |  浏览/下载：16/0  |  提交时间：2013/03/25
In this paper  the SNR tested in laboratory is better than 95 under typical working condition(the solar incidence degree is 30  the temperature of the focal plane module is controlled under 30 in a working period of 15 minutes. All of these results can satisfy the requirements about the synchronous photography  the authors introduced the theory about LMCCD (line-matrix CCD) mapping camera firstly. On top of the introduction were consists of the imaging system of LMCCD mapping camera. Secondly  the photography interval of line-matrix CCD of the nadir camera can satisfy the butter requirements of LMCCD focal plane module  the reflectivity of the earth's surface is 0.3) of each CCD image  the temperature control of focal plane module and SNR  some pivotal designs which were Introduced about the imaging system  Which give the guarantee of precision for satellite photogrammetry. 2011 SPIE.  such as the design of focal plane module  the video signal's procession  the controller's design of the imaging system  synchronous photography about forward and nadir and backward camera and the nadir camera of line-matrix CCD. At last  the test results of LMCCD mapping camera imaging system were introduced. The results as following: the precision of synchronous photography about forward and nadir and backward camera is better than 4 ns and the nadir camera of line-matrix CCD is better than 4 ns too