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长春光学精密机械与物... [2]
力学研究所 [1]
数学与系统科学研究院 [1]
武汉岩土力学研究所 [1]
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OAI收割 [6]
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会议论文 [3]
期刊论文 [3]
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2018 [1]
2012 [1]
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2009 [2]
2008 [1]
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Dynamical stochastic resonance for nonuniform illumination image enhancement
期刊论文
OAI收割
IET Image Processing, 2018, 卷号: 12, 期号: 12, 页码: 2147-2152
作者:
Zhang, Yongbin
;
Liu, Hongjun
;
Huang, Nan
;
Wang, Zhaolu
  |  
收藏
  |  
浏览/下载:52/0
  |  
提交时间:2018/12/18
Image Enhancement
Image Fusion
Stochastic Processes
Iterative Methods
Differential Equations
Brightness
Dynamical Stochastic Resonance
Nonuniform Illumination Image Enhancement
Dark Tones
Low-contrast Image Enhancement
Nonlinear Iteration
Monostable Langevin Equation
Iteration Parameters
Intensity Distribution
Visibility Balance
Naturalness Balance
Illumination Compensation Component
Computational Time
No-reference Perceptual Quality Assessment
Lightness Order Error
Low-computational Complexity
Classification of hyperspectral image based on SVM optimized by a new particle swarm optimization (EI CONFERENCE)
会议论文
OAI收割
2012 2nd International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2012, June 1, 2012 - June 3, 2012, Nanjing, China
作者:
Gao X.
;
Yu P.
;
Yu P.
收藏
  |  
浏览/下载:19/0
  |  
提交时间:2013/03/25
Support Vector Machine (SVM) is used to classify hyperspectral remote sensing image in this paper. Radial Basis Function (RBF)
which is most widely used
is chosen as the kernel function of SVM. Selection of kernel function parameter is a pivotal factor which influences the performance of SVM. For this reason
Particle Swarm Optimization (PSO) is provided to get a better result. In order to improve the optimization efficiency of kernel function parameter
firstly larger steps of grid search method is used to find the appropriate rang of parameter. Since the PSO tends to be trapped into local optimal solutions
a weight and mutation particle swam optimization algorithm was proposed
in which the weight dynamically changes with a liner rule and the global best particle mutates per iteration to optimize the parameters of RBF-SVM. At last
a 220-bands hyperspectral remote sensing image of AVIRIS is taken as an experiment
which demonstrates that the method this paper proposed is an effective way to search the SVM parameters and is available in improving the performance of SVM classifiers. 2012 IEEE.
Structure buckling reliability analysis of supercavitating projectile (EI CONFERENCE)
会议论文
OAI收割
2nd Annual Conference on Electrical and Control Engineering, ICECE 2011, September 16, 2011 - September 18, 2011, Yichang, China
作者:
Zhou L.
收藏
  |  
浏览/下载:12/0
  |  
提交时间:2013/03/25
Because the underwater velocity of supercavitating projectile is very high
its structure undergo high longitudinal force. It is necessary to perform structure buckling reliability analysis because the randomicity of structural own parameters and flow parameters should be considered. Critical buckling load of supercavitating projectile is calculated by Galerkin method. The partial matrixes of critical buckling load implicit function to each random variable are deduced
and structural buckling reliability index is calculated by limit step length iteration method. Numerical results show that the critical buckling load and structural buckling reliability index increase with the increase of the ratio of base diameter to cavitator diameter. And structural buckling reliability index increase with the decrease of velocity coefficient. 2011 IEEE.
On semi-convergence of parameterized Uzawa methods for singular saddle point problems
期刊论文
OAI收割
LINEAR ALGEBRA AND ITS APPLICATIONS, 2009, 卷号: 431, 期号: 5-7, 页码: 808-817
作者:
Zheng, Bing
;
Bai, Zhong-Zhi
;
Yang, Xi
  |  
收藏
  |  
浏览/下载:18/0
  |  
提交时间:2018/07/30
Saddle point problem
Singular matrix
Parameterized Uzawa method
Semi-convergence
Optimal iteration parameters
Semi-convergence factor
Optimization Inversion of Contaminant Transport Model Parameters in Unsaturated Soil
会议论文
OAI收割
Wuhan City, PEOPLES R CHINA, APR 24-26, 2009
作者:
Liang Bing
;
Zhao Ying
;
Xue Qiang
  |  
收藏
  |  
浏览/下载:19/0
  |  
提交时间:2018/06/05
contaminant transport
model parameters
optimization inversion
least square method
Newton iteration method
Pull-In Instability Of Micro-Switch Actuators: Model Review
期刊论文
OAI收割
International Journal of Nonlinear Sciences and Numerical Simulation, 2008, 页码: 175-183
作者:
Lin WH(林文惠)
;
Zhao YP(赵亚溥)
收藏
  |  
浏览/下载:966/62
  |  
提交时间:2009/08/03
Pull-In
Micro And Nano-Switches
Error Estimation
Theoretical Models
Nanoscale Electrostatic Actuators
Van-Der-Waals
Variational Iteration Method
Rf Mems Switches
Torsional Actuators
Microelectromechanical Systems
Behavior
Parameters
Stability
Forces