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浏览/检索结果: 共7条,第1-7条 帮助

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Seed Longevity-The Evolution of Knowledge and a Conceptual Framework 期刊论文  OAI收割
PLANTS-BASEL, 2023, 卷号: 12, 期号: 3, 页码: 471
作者:  
Nadarajan,Jayanthi;  Walters,Christina;  Pritchard,Hugh W.;  Ballesteros,Daniel
  |  收藏  |  浏览/下载:14/0  |  提交时间:2024/05/09
Interval data driven construction of shadowed sets with application to linguistic word modelling 期刊论文  OAI收割
INFORMATION SCIENCES, 2020, 卷号: 507, 页码: 503-521
作者:  
Li, Chengdong;  Yi, Jianqiang;  Wang, Hongkai;  Zhang, Guiqing;  Li, Junqing
  |  收藏  |  浏览/下载:80/0  |  提交时间:2019/12/16
The physiological cold tolerance of warm-climate plants is correlated with their latitudinal range limit 期刊论文  OAI收割
BIOLOGY LETTERS, 2018, 卷号: 14, 期号: 8, 页码: -
作者:  
Wen, Yin;  Qin, De-wen;  Leng, Bing;  Zhu, Yun-fei;  Cao, Kun-fang
  |  收藏  |  浏览/下载:38/0  |  提交时间:2018/11/02
Data normalization of single camera visual measurement network system (EI CONFERENCE) 会议论文  OAI收割
2012 International Conference on Information Technology and Management Innovation, ICITMI 2012, November 10, 2012 - November 11, 2012, Guangzhou, China
作者:  
Zhang Y.-C.;  Zhou J.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25
With the development of visual measurement system  Normalize the measured coordinates into the same world coordinate system  Apply in the three coordinate measuring machine(CMM) to have the simulation experiment  So the data normalization has the advantage of more high precision. (2013) Trans Tech Publications  the visual measurement system of single camera which applied in the imaging theory of optical feature points  then get the global data  the result indicates that the maximum absolute tolerance between the normalization coordinates via the center of point set and the ones measured by CMM directly is 0.058mm  Switzerland.  it has been widespread used in the modern production. Due to the limit of the environment in scene  and achieve the overall measurement  the visual measurement system of single camera could not measure the shield between the measured objects each other. Focus on this problem  But the one between the coordinate repeatedly measured at the position of one network control point is 0.066mm  present a kind of the the knowledge of measurement network based on the visual measurement of single camera  set up the measurement network system via the multi-control points. Measure the optical feature points in every network control point via the visual measurement system of single camera  
Design and tolerance analysis of compensator for high order aspheric surface testing (EI CONFERENCE) 会议论文  OAI收割
2009 International Conference on Optical Instruments and Technology - Optoelectronic Measurement Technology and Systems, October 19, 2009 - October 22, 2009, Shanghai, China
作者:  
Chen X.;  Liu W.;  Chen X.;  Chen X.
收藏  |  浏览/下载:30/0  |  提交时间:2013/03/25
High accuracy is required in surface testing of 90nm nodal point lithography projecting lens. By comparing various aspheric surface testing methods  the structure layout of the compensator is a meniscus positive lens combined with a Plano-convex positive lens. The design results indicate that: primary and high order aberrations are balanced well  we adopt Offner null compensator to test the aspheric surface in the point diffraction interferometer at last. In this paper  MTF exceeds diffraction limit  an Offner compensator is presented on the base of the third order aberration theory to test concave aspheric surface  root-mean-square (RMS) of wave front error /167. The F-number of the system can achieve F/1.64. By the analysis of the process of aspheric surface testing with the designed system  the optical construction parameters of which is determined by introducing equal-quantities spherical aberration to compensate all orders of aspheric coefficients. The field of view of the system is 0.02  a loosen distribution of the tolerance was presented based on the accuracy of measuring apparatus. 2009 SPIE.  
Diffraction-limited performance and aberration tolerance of a sparse optical synthetic aperture imaging system with four sub-apertures 期刊论文  OAI收割
JOURNAL OF MODERN OPTICS, 2008, 卷号: 55, 期号: 11, 页码: 1771-1785
作者:  
Wang, Shengqian;  Rao, Changhui;  Jiang, Wenhan
收藏  |  浏览/下载:25/0  |  提交时间:2015/09/21
Compound telescope (EI CONFERENCE) 会议论文  OAI收割
Novel Optical Systems Design and Optimization IX, August 15, 2006 - August 16, 2006, San Diego, CA, United states
作者:  
Liu H.;  Liu H.;  Sun Q.;  Li F.;  Liu H.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25