Results 21 to 30 of about 1,908 (194)
Polynomial filter diagonalization of large Floquet unitary operators
SciPost Physics, 2021 Periodically driven quantum many-body systems play a central role for our understanding of nonequilibrium phenomena. For studies of quantum chaos, thermalization, many-body localization and time crystals, the properties of eigenvectors and eigenvalues
David J. Luitz
doaj +1 more source
A dual reduction strategy for reduce-order modeling of periodic control system
Results in Control and Optimization, 2021 Model order reduction (MOR) of periodic systems using the Krylov subspace methods received lots of interest in last few decades. In this paper, a structured Krylov subspace based model reduction for linear discrete-time periodic (LDTP) control system has
Mohammad-Sahadet Hossain +2 more
doaj +1 more source
IEEE Access, 2022 The mode matching method is an efficient solution to conventional microwave waveguide problems for its dimensionality advantages. It is theoretically extendable to computational lithography problems in nano scales with periodic boundary condition.
Jia Liu +4 more
doaj +1 more source
Spectral approach with iterative clarification of a radiation boundary conditions for modeling of quasimodes of a gyrotrons open cavities [PDF]
Известия высших учебных заведений: Прикладная нелинейная динамикаPurpose. The article presents a new method for numerical simulation of quasi-eigenmode oscillations in open resonators of gyrotrons — powerful vacuum generators of electromagnetic waves in the millimeter and submillimeter ranges.
Rozhnev, Andrej Georgievich +2 more
doaj +1 more source
Second-Order Arnoldi Reduction Using Weighted Gaussian Kernel
IEEE Access, 2022 Modeling and design of on-chip interconnect continue to be a fundamental roadblock for high-speed electronics. The continuous scaling of devices and on-chip interconnects generates self and mutual inductances, resulting in generating second-order ...
Rahila Malik +4 more
doaj +1 more source
On an Economic Arnoldi Method for $BML$-Matrices
SIAM Journal on Matrix Analysis and Applications, 2018 Matrices whose adjoint is a low rank perturbation of a rational function of the matrix naturally arise when trying to extend the well known Faber-Manteuffel theorem, which provides necessary and sufficient conditions for the existence of a short Arnoldi recurrence.
Bernhard Beckermann +2 more
openaire +2 more sources
Anderson Acceleration of the Arnoldi-Inout Method for Computing PageRank [PDF]
Symmetry, 2021 Anderson(m0) extrapolation, an accelerator to a fixed-point iteration, stores m0+1 prior evaluations of the fixed-point iteration and computes a linear combination of those evaluations as a new iteration. The computational cost of the Anderson(m0) acceleration becomes expensive with the parameter m0 increasing, thus m0 is a common choice in most ...
Xia Tang +3 more
openaire +1 more source
Efficient Pixel-Wise SVD Required for Image Processing Using the Color Line Feature
IEEE Access, 2021 In color image processing based on mathematical optimization, a color-line image feature has been considered and many methods that give good results have been proposed.
Keiichiro Shirai +3 more
doaj +1 more source
A revised moment error expression for the AIRGA algorithm
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2018 The fully adaptive rational global Arnoldi method (AIRGA) for the modelorder reduction of second-order multi-input multi-output systems with proportional damping is revisited. The method automatically generates a reduced system approximating the transfer
Faßbender Heike, Mayer Julius
doaj +1 more source
The Journal of Engineering, 2019 In this study, a three-dimensional model with multi-parameter order reduction is applied to the thermal modelling of power electronics modules with complex geometries.
Xiaojun Dong +2 more
doaj +1 more source