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浏览/检索结果: 共12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 Global Controllability of the Navier-Stokes Equations in the Presence of Curved Boundary with No-Slip Conditions 期刊论文  OAI收割 JOURNAL OF MATHEMATICAL FLUID MECHANICS, 2022, 卷号: 24, 期号: 3, 页码: 32 作者:  Liao, Jiajiang;  Sueur, Franck;  Zhang, Ping   |  收藏  |  浏览/下载：22/0  |  提交时间：2023/02/07 Axi-symmetric Navier-Stokes equations  Controllability  No-slip Dirichlet boundary condition  Boundary layers  Return method  Multi-scales asymptotic expansion  Well-prepared dissipation method  Long-time nonlinear Cauchy-Kovalevskaya estimates   A lattice Boltzmann method for viscous free surface waves in two dimensions 期刊论文  OAI收割 INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS, 2013, 卷号: 71, 期号: 2, 页码: 223-248 [Zhao, Zhuangming; Huang, Ping] Sun Yat Sen Univ, Sch Environm Sci & Engn, Dept Environm Sci, Guangzhou 510275, Guangdong, Peoples R China; [Li, Yineng; Li, Junmin] Chinese Acad Sci, S China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China 收藏  |  浏览/下载：40/0  |  提交时间：2015/01/14 lattice Boltzmann equation (LBE)  kinematic boundary condition (KBC)  free surface  viscous wave  non-hydrostatic pressure  multi-relaxation-time (MRT) model   Computational strategy of seismic pre-stack reverse time migration on CPU/GPU 期刊论文  OAI收割 CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2010, 卷号: 53, 期号: 12, 页码: 2938-2943 作者:  Li Bo;  Liu Hong-Wei;  Liu Guo-Feng;  Tong Xiao-Long;  Liu Hong   |  收藏  |  浏览/下载：55/0  |  提交时间：2018/09/26 Reverse Time Migration(Rtm)  Wave Equation  Random Boundary Condition  Central Processing Unit(Cpu)  Graphic Processing Unit(Gpu)   Computational strategy of seismic pre-stack reverse time migration on CPU/GPU 期刊论文  OAI收割 CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2010, 卷号: 53, 期号: 12, 页码: 2938-2943 作者:  Li Bo;  Liu Hong-Wei;  Liu Guo-Feng;  Tong Xiao-Long;  Liu Hong   |  收藏  |  浏览/下载：52/0  |  提交时间：2018/09/26 Reverse Time Migration(Rtm)  Wave Equation  Random Boundary Condition  Central Processing Unit(Cpu)  Graphic Processing Unit(Gpu)   Intelligent MRTD testing for thermal imaging system using ANN (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 Sun J.; Ma D. 收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25 The Minimum Resolvable Temperature Difference (MRTD) is the most widely accepted figure for describing the performance of a thermal imaging system. Many models have been proposed to predict it. The MRTD testing is a psychophysical task  for which biases are unavoidable. It requires laboratory conditions such as normal air condition and a constant temperature. It also needs expensive measuring equipments and takes a considerable period of time. Especially when measuring imagers of the same type  the test is time consuming. So an automated and intelligent measurement method should be discussed. This paper adopts the concept of automated MRTD testing using boundary contour system and fuzzy ARTMAP  but uses different methods. It describes an Automated MRTD Testing procedure basing on Back-Propagation Network. Firstly  we use frame grabber to capture the 4-bar target image data. Then according to image gray scale  we segment the image to get 4-bar place and extract feature vector representing the image characteristic and human detection ability. These feature sets  along with known target visibility  are used to train the ANN (Artificial Neural Networks). Actually it is a nonlinear classification (of input dimensions) of the image series using ANN. Our task is to justify if image is resolvable or uncertainty. Then the trained ANN will emulate observer performance in determining MRTD. This method can reduce the uncertainties between observers and long time dependent factors by standardization. This paper will introduce the feature extraction algorithm  demonstrate the feasibility of the whole process and give the accuracy of MRTD measurement.   Time-domain finite-element wave form inversion of acoustic wave equation 期刊论文  OAI收割 JOURNAL OF COMPUTATIONAL ACOUSTICS, 2004, 卷号: 12, 期号: 3, 页码: 387-396 作者:  Di, QY;  Zhang, MG;  Wang, MY   |  收藏  |  浏览/下载：15/0  |  提交时间：2018/09/26 wave form inversion  finite-element method  absorbing boundary condition  acoustic wave equation  time domain   Time-domain finite-element wave form inversion of acoustic wave equation 期刊论文  OAI收割 JOURNAL OF COMPUTATIONAL ACOUSTICS, 2004, 卷号: 12, 期号: 3, 页码: 387-396 作者:  Di, QY;  Zhang, MG;  Wang, MY   |  收藏  |  浏览/下载：16/0  |  提交时间：2018/09/26 wave form inversion  finite-element method  absorbing boundary condition  acoustic wave equation  time domain   Finite-element implementation of reverse-time migration for anisotropic media 期刊论文  OAI收割 JOURNAL OF GEOPHYSICS AND ENGINEERING, 2004, 卷号: 1, 期号: 2, 页码: 103-108 作者:  Zhang, MG;  Li, XF;  Wang, MY   |  收藏  |  浏览/下载：18/0  |  提交时间：2018/09/26 finite-element method  reverse-time migration  absorbing boundary condition   Finite-element implementation of reverse-time migration for anisotropic media 期刊论文  OAI收割 JOURNAL OF GEOPHYSICS AND ENGINEERING, 2004, 卷号: 1, 期号: 2, 页码: 103-108 作者:  Zhang, MG;  Li, XF;  Wang, MY   |  收藏  |  浏览/下载：15/0  |  提交时间：2018/09/26 finite-element method  reverse-time migration  absorbing boundary condition   Variational Formulation of l-D Unsteady Compressible Flow in a Deforming Tube 期刊论文  OAI收割 JOURNAL OF THERMAL SCIENCE, 2003, 卷号: 12, 期号: 2, 页码: 114,117 Gaolian Liu; YiTao; Yingxue Liu 收藏  |  浏览/下载：12/0  |  提交时间：2013/03/12 variational principle  time boundary condition  1-D unsteady flow.