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Relationship of extreme precipitation, surface air temperature, and dew point temperature across the Tibetan Plateau 期刊论文  OAI收割
CLIMATIC CHANGE, 2021, 卷号: 165, 期号: 1-2, 页码: 22
作者:  
Yong, Zhiwei;  Xiong, Junnan;  Wang, Zegen;  Cheng, Weiming;  Yang, Jiawei
  |  收藏  |  浏览/下载:36/0  |  提交时间:2021/06/10
Relationship of extreme precipitation, surface air temperature, and dew point temperature across the Tibetan Plateau 期刊论文  OAI收割
CLIMATIC CHANGE, 2021, 卷号: 165, 期号: 1-2, 页码: 22
作者:  
Yong, Zhiwei;  Xiong, Junnan;  Wang, Zegen;  Cheng, Weiming;  Yang, Jiawei
  |  收藏  |  浏览/下载:12/0  |  提交时间:2021/06/10
Identification of the non-stationarity of extreme precipitation events and correlations with large-scale ocean-atmospheric circulation patterns: A case study in the Wei River Basin, China 期刊论文  OAI收割
JOURNAL OF HYDROLOGY, 2017, 卷号: 548, 页码: 184-195
作者:  
Liu, Saiyan;  Huang, Shengzhi;  Huang, Qiang;  Xie, Yangyang;  Leng, Guoyong
  |  收藏  |  浏览/下载:32/0  |  提交时间:2019/09/25
Analysis of measuring errors for the visible light phase-shifting point diffraction interferometer (EI CONFERENCE) 会议论文  OAI收割
2010 OSA-IEEE-COS Advances in Optoelectronics and Micro/Nano-Optics, AOM 2010, December 3, 2010 - December 6, 2010, Guangzhou, China
作者:  
Zhang Y.
收藏  |  浏览/下载:13/0  |  提交时间:2013/03/25
In order to improve the measuring accuracy of the visible light phase-shifting point diffraction interferometer (PS/PDI) for the extreme ultraviolet lithography (EUVL) aspheric mirrors  the main measuring errors will be discussed in this paper. At first  the elementary configuration and measuring principle of the visible light phase-shifting point diffraction interferometer are introduced briefly  then the different errors which are possible to affect the measuring result are summed up  the errors include PZT phase-shifting error  detector nonlinearity error  detector quantization error  wavelength instability error and intensity instability error of the laser source  vibration error  air refractivity instability error and so on. Through detailed analysis and simulation  the magnitude of these errors can be obtained. By analysing the reasons which cause these errors and the relationship between these errors and interferometer configuration parameters  some methods are put forward to avoid or restrain these errors accordingly.  
Necessary and sufficient conditions for robust oscillatory stability 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE, 2007, 卷号: 38, 期号: 2, 页码: 179-185
作者:  
Gu, Nong;  Yu, Wensheng;  Xiang, Yong;  Tan, Min
收藏  |  浏览/下载:11/0  |  提交时间:2015/11/08
A segment detection method based on improved Hough transform (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Yao Z.-J.
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25
Hough transform is recognized as a powerful tool in shape analysis which gives good results even in the presence of noise and the disconnection of edge. However  3. applying the standard Hough transform equation to every point of the input image edge  4. according to the local threshold  6. merging the segments whose extreme points are near. Experiment results show the approach not only can recognize regular geometric object but also can extract the segment feature of real targets in complex environment. So the proposed method can be used in the target detection of complicated scenes  traditional Hough transform can only detect the lines  2. quantizing the parameter space  and extracting a group of maximums according to the global threshold  eliminating spurious peaks which are caused by the spreading effects  and will improve the precision of tracking.  cannot give the endpoints and length of the line segments and it is vulnerable to the quantization errors. Based on the analysis of its limitations  Hough transform has been improved in order to detect line segment feature of targets. The algorithm aims to avoid the loss of spatial information  as well as to eliminate the spurious peaks and fix on the line segments endpoints accurately  5. fixing on the endpoints of the segments according to the dynamic clustering rule  which can expediently be used for the description and classification of regular objects. The method consists of 6 steps: 1. setting up the image  parameter and line-segment spaces  
Robust stabilization of multilinear interval plants 期刊论文  OAI收割
PROGRESS IN NATURAL SCIENCE, 2002, 卷号: 12, 期号: 7, 页码: 546-550
作者:  
Wang, ZZ;  Wang, L;  Yu, WS
收藏  |  浏览/下载:10/0  |  提交时间:2015/11/08
Operator analogue of the Krein-Milman theorem in the generalized state spaces 期刊论文  OAI收割
SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY, 2001, 卷号: 44, 期号: 1, 页码: 67-73
作者:  
Wu, W
  |  收藏  |  浏览/下载:21/0  |  提交时间:2018/07/30
Extreme points and support points of a class of analytic functions 期刊论文  OAI收割
ACTA MATHEMATICA SCIENTIA, 2000, 卷号: 20, 期号: 1, 页码: 131-136
作者:  
Peng, ZG;  Liu, LG
收藏  |  浏览/下载:17/0  |  提交时间:2015/12/01