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CORC

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A novel method of self-pulling and latter transected delta-shaped Billroth-I anastomosis in totally laparoscopic distal gastrectomy 期刊论文
SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES, 2017, 卷号: 31, 期号: 11
作者:  Hong, Jun;  Wang, Ya-Ping;  Wang, Jian;  Bei, Yi-Bing;  Hua, Lu-Chun
收藏  |  浏览/下载：6/0  |  提交时间：2019/12/05
A novel method of self-pulling and latter transected reconstruction in totally laparoscopic total gastrectomy: feasibility and short-term safety 期刊论文
SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES, 2017, 卷号: 31, 期号: 7
作者:  Hong, Jun;  Wang, Ya-Ping;  Wang, Jian;  Bei, Yi-Bing;  Hua, Lu-Chun
收藏  |  浏览/下载：19/0  |  提交时间：2019/12/05
Comparison of laser-induced damage in Ta_2O_5 and Nb_2O_5 single-layer films and high reflectors 期刊论文
2015, 2015
许程; 赵宇龙; 强颖怀; 朱亚波; 郭立童; 邵建达
收藏  |  浏览/下载：6/0  |  提交时间：2017/06/15
Officials Training Trend and Corresponding Enlightenment in Late Qing Dynasty 会议论文
作者:  Baoan Xu
收藏  |  浏览/下载：4/0  |  提交时间：2019/12/31
Officials Training Trend and Corresponding Enlightenment in Late Qing Dynasty 会议论文
2nd International Conference on Education Technology and Information System (ICETIS), APR 26-27, 2014
作者:  Xu, Baoan
收藏  |  浏览/下载：2/0  |  提交时间：2019/12/31
Time correlations in compressible isotropic turbulence 会议论文
23rd International Congress of Theoretical and Applied Mechanics, 中国北京/Beijing, China, 2012-08-19
作者:  Li D;  He GW(何国威);  Zhang X(张星)
收藏  |  浏览/下载：21/0  |  提交时间：2014/04/02
A matching algorithm on statistical properties of Harris corner (EI CONFERENCE) 会议论文
2011 International Conference on Information and Automation, ICIA 2011, June 6, 2011 - June 8, 2011, Shenzhen, China
He B.; Ming Z.; Wei Y.
收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25
The fundamental goal of target recognition and video tracking is to match target template with source image. Most matching methods are based on image intensity or multi-feature points. And the latter method is more popular for its high accuracy and small calculation. Image Registration Based on Feature Points focus on effective feature extraction of image points and paradigm. Harris corner in the image rotation  gray  noise and viewpoint change conditions  has an ideal match results  is more recent application of one feature point. This paper extract the Harris corner deviation and covariance firstly  experiments show that the two features exclusive  then applied them to image registration for the first time. A set of actual images have shown  this proposed method not only overcomes the complicated background  gray uneven distribution problems  but also pan and zoom the image has a good resistance. 2011 IEEE.  
从《点石斋画报》看西方科技在中国的传播 期刊论文
2010, 2010
王斌; 戴吾三; WANG Bin; DAI Wusan
收藏  |  浏览/下载：4/0
High accuracy star image locating and imaging calibration for star sensor technology (EI CONFERENCE) 会议论文
6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China
Zhang S.; Zhang Z.; Sun H.; Wang Y.
收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25
Today aircraft attitude measurement technology plays an important role in an aircraft system because it can provide orientation for aircraft in action. Lately star sensor technology used in aircraft attitude measurement has become more and more popular because of its high accuracy  light weight  without attitude accumulation errors and other advantages. There are three main steps for star sensor to measure aircraft attitude  star image locating  star identification and attitude tracking. The latter two steps are based on the accuracy of star image locating. So it's critical to make efforts to advance the accuracy of star image locating. Some imaging errors  such as spherical aberration or coma aberration  also have negative effect on the accuracy of star image locating  of which the effect is necessarily reduced as well. At the beginning of this article  the structure of star sensor hardware is introduced. Secondly three methods for star image locating are described specifically  which are traditional centroid method  Gauss quadric fitting method and improved Gauss quadric fitting method. Subsequently an imaging calibration method is described for the purpose of reducing the effect of imaging errors. Finally the experiment shows that the accuracy of the star sensor is 2-arc-second. 2010 SPIE.  
A design of beam shaping unit for 193nm lithography illumination system using angular spectrum theory (EI CONFERENCE) 会议论文
6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China
Zhao Y.; Gong Y.; Li S.; Zhang W.
收藏  |  浏览/下载：16/0  |  提交时间：2013/03/25
Off-axis illumination (OAI) technology is widely used to enhance resolution for deep ultraviolet lithography. The realizing methods of OAI include geometrical optics method and physical optics method. However  the former has the disadvantage of weak intensity distribution controlling ability  and the latter introduces simulation errors evidently when dealing with near field diffraction propagation. A diffractive optical element (DOE) designing method using plane wave angular spectrum theory is presented in this paper. Several kinds of OAI modes at near field away from DOE can be realized  and simulation errors and the size of illuminator are also reduced. According to studying the relationships of the sampling point distance of DOE  light beam propagation distance  and the structure of the beam shaping unit  a method of determining the designing parameters is discussed. Using this method  several illumination modes are realized  and simulation results show that all diffraction efficiencies reach up to 84%. The method of DOE manufacturing is analyzed at last  and it is proven to be feasible. 2010 SPIE.  

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