机构

• 数学与系统科学研究院 [3]
• 长春光学精密机械与物... [1]
• 化学研究所 [1]

采集方式

• OAI收割 [5]

内容类型

• 期刊论文 [4]
• 会议论文 [1]

发表日期

• 2018 [1]
• 2006 [1]
• 2003 [1]
• 2002 [1]
• 2001 [1]

学科主题

筛选

浏览/检索结果: 共5条，第1-5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 Controllable assembly of a hierarchical multiscale architecture based on silver nanoparticle grids/nanowires for flexible organic solar cells 期刊论文  OAI收割 NANOTECHNOLOGY, 2018, 卷号: 29, 期号: 41 作者:  Zhang, Zhiliang;  Si, Tiantian;  Liu, Jun   |  收藏  |  浏览/下载：37/0  |  提交时间：2019/04/08 Silver Grids  Silver Nanowires  Controllable Assembly  Ink Jet Printing Technique  Hierarchical Multiscale Architecture  Flexible Electronics   A new approach for the removal of mixed noise based on wavelet transform (EI CONFERENCE) 会议论文  OAI收割 ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Li Y.;  Li Y.;  Li Y.;  Li Y. 收藏  |  浏览/下载：36/0  |  提交时间：2013/03/25 This paper proposed a new approach for the removal of mixed noise. There are many different ways in image denoising. Donoho et al have proposed a method for image de-noising by thresholding  ambiguity is often resulted in determining the correspondence of a modulus maximum to a singularity. In the light  and indeed  we combine the merits of the two techniques to form a new approach for the removal of mixed noise. At first  the application of their method to image denoising has been extremely successful. But the method of Donoho is based on the assumption that the type of noise is only additive Gaussian noise  we used wavelet singularity detection (WSD) technique to analyze singularities of signal and noise. According to the characteristic that wavelet transform modulus maxima of impulse noise rapidly decreases as the scale increases in wavelet domain  which is not successful for impulse noise. Mallat has also presented a method for signal denoising by discriminating the noise and the signal singularities through an analysis of their wavelet transform modulus maxima (WTMM). Nevertheless  it can be accurately located with multiscale space by going through dyadic orthogonal wavelet transform and removed. Furthermore the Gaussian noise is also removed through a level-dependent thresholding algorithm  the tracing of WTMM is not just tedious procedure computationally  algorithm. The experimental results demonstrate that the proposed method can effectively detect impulse noise and remove almost all of the noise while preserve image details very well.   Multiscale asymptotic expansion and a post-processing algorithm for second-order elliptic problems with highly oscillatory coefficients over general convex domains 期刊论文  OAI收割 JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, 2003, 卷号: 157, 期号: 1, 页码: 1-29 作者:  Cao, LQ;  Cui, JZ;  Luo, JL   |  收藏  |  浏览/下载：20/0  |  提交时间：2018/07/30 multiscale asymptotic analysis  second-order elliptic type equation  highly oscillatory coefficient  finite element method  post-processing technique   Multiscale asymptotic analysis and numerical simulation for the second order Helmholtz equations with rapidly oscillating coefficients over general convex domains 期刊论文  OAI收割 SIAM JOURNAL ON NUMERICAL ANALYSIS, 2002, 卷号: 40, 期号: 2, 页码: 543-577 作者:  Cao, LQ;  Cui, JZ;  Zhu, DC   |  收藏  |  浏览/下载：16/0  |  提交时间：2018/07/30 multiscale asymptotic analysis  second order Helmholtz equation  rapidly oscillating coefficients  finite element method  postprocessing technique   Lattice Bhatnagar-Gross-Krook model for the Lorenz attractor 期刊论文  OAI收割 PHYSICA D, 2001, 卷号: 154, 期号: 1-2, 页码: 43-50 作者:  Yan, GW;  Yuan, L   |  收藏  |  浏览/下载：22/0  |  提交时间：2018/07/30 lattice BGK model  multiscale technique  Lorenz attractor