Results 261 to 270 of about 803,494 (308)
Some of the next articles are maybe not open access.
Time Domain Model Order Reduction by Wavelet Collocation Method
Proceedings of the Design Automation & Test in Europe Conference, 2006In this paper, a wavelet based approach is proposed for the model order reduction of linear circuits in time domain. Compared with Chebyshev reduction method, the wavelet reduction approach can achieve smaller reduced order circuits with very high accuracy, especially for those circuits with strong singularities.
Yangfeng Su, C Chiang
exaly +2 more sources
An abstract theory for the domain reduction method
Computing, 1992Theoretical foundations of the domain reduction method based on known results from group representation theory and algebras of finite groups are investigated. The main result is that if an initial system of linear equations arising by discretization of partial differential equations splits into subproblems based on isomorphic subdomains, then the group
Craig C. Douglas, Jan Mandel
openaire +1 more source
A parallel domain reduction method
Numerical Methods for Partial Differential Equations, 1989AbstractWe relate a particular version of a parallel multigrid method to a domain decomposition method, showing that the parallel multigrid method reduces computation to a small portion of the domain and then extends the solution to the entire domain using the correct reflections to get the exact solution.
Brezzi, Franco +2 more
openaire +2 more sources
A Random Noise Reduction Method in F-X Domain
82nd EAGE Annual Conference & Exhibition, 2021Summary Random noise attenuation is a persistent problem in seismic exploration. As we known, the l2-norm regularization is always used to improve inversion stability. However, in the presence of noise, the result could be unstable. We have developed a novel random noise attenuation method for seismic data based on inversion in the frequency-space (f-x)
J. Liu, X. Wang, J. Wu, X. Wang, J. Sun
openaire +1 more source
An adaptive method of model reduction in frequency domain
2011 IEEE Power Engineering and Automation Conference, 2011This paper presents an adaptive model reduction method. This method is based on the continuous-time rational orthogonal basis (Takenaka-Malmquist basis). By selecting optimal points for the rational orthogonal basis, it is to find a fast approximation in the energy sense. The steady-state values of step responses are kept to be equal, and the stability
null Wen Mi, Tao Qian
openaire +1 more source
Metal artifact reduction with DCT-domain gap-filling method
2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC), 2012The highly attenuating materials in the field-of-view result in high sinogram bin values which cause the so called metal artifacts in the reconstructed images. These artifacts degrade the quality of the images especially in X-Ray computerized tomography and accuracy of the attenuation correction factors necessary for quantitative positron emission ...
Ruotsalainen Ulla, Tuna Uygar
openaire +1 more source
Frequency domain model reduction method for parameter-dependent systems
Proceedings of the 2010 American Control Conference, 2010In this paper a modification of a recently proposed model simplification method for linear time invariant parameterized models is presented. It is able to obtain models with explicit parameter dependence. The method is based on convex optimization with semidefinite constraints. Computation of the reduced model requires only the frequency samples of the
Aivar Sootla, Kin Cheong Sou
openaire +1 more source
FF-Padé method of model reduction in frequency domain
IEEE Transactions on Automatic Control, 1987The FF-Padé method based upon some new concepts in model reduction is presented. The new method will overcome the chief drawbacks of the current methods. Some typical examples are used to show convincingly that one has to break free from the conventional approaches in order to obtain better results in model reduction.
exaly +3 more sources
Complexity reduction method for ultrasound imaging enhancement in tetrolet transform domain
The Journal of Supercomputing, 2018Medical ultrasound images are often very obscure due to the capture devices used. As medical ultrasound images can provide information regarding potential pathological changes and abnormalities, images must be preserved and enhanced to help doctors to monitor the course of diseases.
Chih-Hsien Hsia +2 more
openaire +2 more sources
Boundary reduction technique and rational Sinc domain decomposition method
Engineering Analysis With Boundary Elements, 2012zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Du, Liangliang +2 more
exaly +2 more sources