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Development of a hybrid parallel MCV-based high-order global shallow-water model
期刊论文
OAI收割
The Journal of Supercomputing, 2017, 卷号: 73, 期号: 6, 页码: 2823–2842
作者:
Peng Zhang
;
Chao Yang
;
Chungang Chen
;
Xingliang Li
;
Xueshun Shen
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2017/07/08
Global shallow-water model
Multi-moment constrained volume method
Cubed-sphere
Intel Xeon Phi
Parallel scalability
A Slope Constrained 4th Order Multi-Moment Finite Volume Method with WENO Limiter
期刊论文
OAI收割
COMMUNICATIONS IN COMPUTATIONAL PHYSICS, 2015, 卷号: 18, 期号: 4, 页码: 901-930
作者:
Sun ZY
;
Teng HH(滕宏辉)
;
Xiao F
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  |  
浏览/下载:85/0
  |  
提交时间:2016/01/08
Multi-moment finite volume method
WENO
flux reconstruction
compressible flow
conservative method
oscillation-suppressing
Multi-focus image fusion algorithm based on adaptive PCNN and wavelet transform (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Wu Z.-G.
;
Wang M.-J.
;
Han G.-L.
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  |  
浏览/下载:78/0
  |  
提交时间:2013/03/25
Being an efficient method of information fusion
image fusion has been used in many fields such as machine vision
medical diagnosis
military applications and remote sensing.In this paper
Pulse Coupled Neural Network (PCNN) is introduced in this research field for its interesting properties in image processing
including segmentation
target recognition et al.
and a novel algorithm based on PCNN and Wavelet Transform for Multi-focus image fusion is proposed. First
the two original images are decomposed by wavelet transform. Then
based on the PCNN
a fusion rule in the Wavelet domain is given. This algorithm uses the wavelet coefficient in each frequency domain as the linking strength
so that its value can be chosen adaptively. Wavelet coefficients map to the range of image gray-scale. The output threshold function attenuates to minimum gray over time. Then all pixels of image get the ignition. So
the output of PCNN in each iteration time is ignition wavelet coefficients of threshold strength in different time. At this moment
the sequences of ignition of wavelet coefficients represent ignition timing of each neuron. The ignition timing of PCNN in each neuron is mapped to corresponding image gray-scale range
which is a picture of ignition timing mapping. Then it can judge the targets in the neuron are obvious features or not obvious. The fusion coefficients are decided by the compare-selection operator with the firing time gradient maps and the fusion image is reconstructed by wavelet inverse transform. Furthermore
by this algorithm
the threshold adjusting constant is estimated by appointed iteration number. Furthermore
In order to sufficient reflect order of the firing time
the threshold adjusting constant is estimated by appointed iteration number. So after the iteration achieved
each of the wavelet coefficient is activated. In order to verify the effectiveness of proposed rules
the experiments upon Multi-focus image are done. Moreover
comparative results of evaluating fusion quality are listed. The experimental results show that the method can effectively enhance the edge details and improve the spatial resolution of the image. 2011 SPIE.
Global advection transport model on hexagonal-pentagonal geodesic grid by multi-moment scheme
会议论文
OAI收割
International Conference on Computational Science (ICCS) on the Ascent of Computational Excellence, Singapore, SINGAPORE, JUN 01-03, 2011
作者:
Bin JZ(宾聚忠)
;
Chen CG(陈春刚)
;
Xiao F(肖锋)
收藏
  |  
浏览/下载:37/0
  |  
提交时间:2013/02/26
Global model
advection transport
multi-moment method
icosahedral geodesic grid
hexagonal-pentagonal element
high order accuracy
SHALLOW-WATER EQUATIONS
BAROTROPIC VORTICITY EQUATION
SPHERE
DISCRETIZATIONS
FORMULATION
INTEGRATION
基于多矩的有限体积浸入边界法研究
学位论文
OAI收割
硕士, 北京: 中国科学院研究生院, 2009
-
收藏
  |  
浏览/下载:1488/166
  |  
提交时间:2009/04/13
浸入边界法
多矩有限体积法
虚拟网格法
不可压缩流
复杂边界
运动边界
immersed boundary method
multi-moment finite volume method
ghost-cell method
incompressible flows
High Order Multi-Moment Constrained Finite Volume Method. Part I: Basic Formulation
期刊论文
OAI收割
Journal of Computational Physics, 2009, 卷号: 228, 期号: 10, 页码: 3669-3707
作者:
Satoshi I
;
Xiao F(肖锋)
;
Xiao F
收藏
  |  
浏览/下载:1222/140
  |  
提交时间:2009/08/03
Finite Volume Method
High-Order Accuracy
Multi-Moment
Hyperbolic Conservation Laws
Compact Stencil
Local Reconstruction
Spectral Difference Method
Hyperbolic Conservation-Laws
One-Dimensional Systems
Unstructured Grids Ii
Shallow-Water Model
Element Method
Efficient Implementation
Incompressible Flows
Unified Formulation
Riemann Solvers
A Cip/Multi-Moment Finite Volume Method For Shallow Water Equations With Source Terms
期刊论文
OAI收割
International Journal for Numerical Methods In Fluids, 2008, 页码: 2245-2270
作者:
Akoh R
;
Ii S
;
Xiao F(肖锋)
收藏
  |  
浏览/下载:786/42
  |  
提交时间:2009/08/03
Shallow Water Equations
Source Terms
Finite Volume Method
High-Order Accuracy
Cip
Multi-Moment
Method Of Characteristics
Incompressible Flows
Unified Formulation
Weno Schemes
Simulations
Order
Transport
Particle-number conserving calculation for low-lying excited high-K multi-quasiparticle bands in Hf-172,Hf-174
期刊论文
OAI收割
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 2002, 卷号: 26, 页码: 164-171
作者:
Gong, LX
;
Liu, SX
;
Zhu, HB
;
Zeng, JY
  |  
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2018/05/31
high K multi-quasiparticle band
moment of inertia
particle-number conserving method
blocking effect