机构

• 数学与系统科学研究院 [5]
• 地质与地球物理研究所 [4]
• 理论物理研究所 [1]
• 长春光学精密机械与物... [1]

采集方式

• OAI收割 [11]

内容类型

• 期刊论文 [10]
• 会议论文 [1]

发表日期

• 2018 [1]
• 2013 [2]
• 2009 [2]
• 2004 [2]
• 2003 [3]
• 2000 [1]
• 更多

学科主题

• Physics [1]

筛选

浏览/检索结果: 共11条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Nevanlinna theory of the Askey-Wilson divided difference operator 期刊论文  OAI收割 ADVANCES IN MATHEMATICS, 2018, 卷号: 329, 页码: 217-272 作者:  Chiang, Yik-Man;  Feng, Shaoji   |  收藏  |  浏览/下载：24/0  |  提交时间：2018/07/30 Nevanlinna theory  Askey-Wilson operator  Deficiency  Difference equations   Optimal 15-point finite difference forward modeling in frequency-space domain 期刊论文  OAI收割 CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2013, 卷号: 56, 期号: 2, 页码: 644-652 作者:  Liu Lu;  Liu Hong;  Liu Hong-Wei   |  收藏  |  浏览/下载：24/0  |  提交时间：2018/09/26 15-point difference scheme  Compressed storage  Perfectly matched layer  Weighted-averaging difference operator   Optimal 15-point finite difference forward modeling in frequency-space domain 期刊论文  OAI收割 CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2013, 卷号: 56, 期号: 2, 页码: 644-652 作者:  Liu Lu;  Liu Hong;  Liu Hong-Wei   |  收藏  |  浏览/下载：19/0  |  提交时间：2018/09/26 15-point difference scheme  Compressed storage  Perfectly matched layer  Weighted-averaging difference operator   Decomposition of ordinary difference polynomials 期刊论文  OAI收割 JOURNAL OF SYMBOLIC COMPUTATION, 2009, 卷号: 44, 期号: 10, 页码: 1394-1409 作者:  Zhang, Mingbo;  Gao, Xiao-Shan   |  收藏  |  浏览/下载：18/0  |  提交时间：2018/07/30 Functional decomposition  Difference polynomial  Difference operator  Difference degree   Self-adaptive threshold canny operator in color image edge detection (EI CONFERENCE) 会议论文  OAI收割 2009 2nd International Congress on Image and Signal Processing, CISP'09, October 17, 2009 - October 19, 2009, Tianjin, China Luo T.; Zheng X.-F.; Ding T.-F. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 It needs to set the two thresholds of classical Canny Operator manually  which confined this algorithm. A lot of research on adaptive thresholds choice method has been done to conquer this shortcoming. Based on the gradient histogram  which is studied constantly in the past  a method of gradient histogram difference diagram with adaptive image classification techniques is proposed in this paper. It automatically sets the two thresholds  and avoids disconnected or false edges in detection. Experiments prove that the method is threshold-adaptive and the edge detection performs well in color image whose larger gradient amplitude pixels are mainly located in the edges between the target and background. 2009 IEEE.   True amplitude seismic migration operator in 3D heterogeneous medium 期刊论文  OAI收割 CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2004, 卷号: 47, 期号: 3, 页码: 509-513 作者:  Cui, XF;  Zhang, GQ;  Wu, YL   |  收藏  |  浏览/下载：12/0  |  提交时间：2018/07/30 one way wave equation  true amplitude migration  split step Fourier migration operator  Fourier finite difference migration operator   Methods for wave equation prestack depth migration and numerical experiments 期刊论文  OAI收割 SCIENCE IN CHINA SERIES A-MATHEMATICS, 2004, 卷号: 47, 页码: 111-120 作者:  Zhang, GQ;  Zhang, WS   |  收藏  |  浏览/下载：11/0  |  提交时间：2018/07/30 wave operator splitting  3D prestack depth migration  SEG/EAEG model  synthesized-shot  finite-difference method  factorization method  hybrid method  MPI   A conservative numerical scheme for a class of nonlinear Schrodinger equation with wave operator 期刊论文  OAI收割 APPLIED MATHEMATICS AND COMPUTATION, 2003, 卷号: 145, 期号: 2-3, 页码: 603-612 作者:  Zhang, LM;  Chang, QS   |  收藏  |  浏览/下载：18/0  |  提交时间：2018/07/30 wave operator  nonlinear Schrodinger equation  difference scheme  convergence   Method of creating short operator of wavefield extrapolating 期刊论文  OAI收割 CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2003, 卷号: 46, 期号: 2, 页码: 246-251 作者:  Li, B;  Liu, H;  Li, YM   |  收藏  |  浏览/下载：27/0  |  提交时间：2018/09/26 short explicit difference operators  phase-shift operator  discrete smooth interpolation   Method of creating short operator of wavefield extrapolating 期刊论文  OAI收割 CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2003, 卷号: 46, 期号: 2, 页码: 246-251 作者:  Li, B;  Liu, H;  Li, YM   |  收藏  |  浏览/下载：12/0  |  提交时间：2018/09/26 short explicit difference operators  phase-shift operator  discrete smooth interpolation