Results 81 to 90 of about 1,908 (194)

An Extended-Rational Arnoldi Method for Large Matrix Exponential Evaluations

, 2022
International audienceThe numerical computation of a matrix function such as exp (−t A)V , where A is an n × nlarge and sparse matrix, V is an n × p block with p n, and t > 0 arises in variousapplications including network analysis, the solution of time-
Ghomari, M. El, Jbilou, Khalide, Bentbib, A.   +2 more
core   +1 more source

Using the RD rational Arnoldi method inside Exponential integrators

, 2011
We consider the use of the Restricted-Denominator (RD) rational Arnoldi method for the computation of the core functions of exponential integrators for parabolic problems.
NOVATI, PAOLO, Paolo Novati
core   +1 more source

Optimization of geometry of two-dimensional photonic crystal waveguide for telecommunications and sensorics

Научно-технический вестник информационных технологий, механики и оптики
The results of geometry optimization of the two-dimensional photonic crystal waveguide for minimization of optical losses and stabilization of waveguide modes are presented. The main factor (not including absorption) is the appearance of Bragg reflection.
K. G. Elanskaia, A. I. Sidorov
doaj   +1 more source

On The Convergence Of An Implicitly Restarted Arnoldi Method

, 1999
. We show that Sorensen's [35] implicitly restarted Arnoldi method (including its block extension) is non-stationary simultaneous iteration with an implicit projection step to accelerate convergence to the invariant subspace of interest.
Rich Lehoucq, Lehoucq, Richard B.
core  

An invert-free Arnoldi method for computing interior eigenpairs of large matrices

, 2007
This paper presents an invert-free Arnoldi method for extracting a few interior eigenpairs of large sparse matrices. It is derived by implicitly applying the Arnoldi process with the shifted and inverted operator (A-tau I)(-1) in a shifted Krylov ...
Niu, Q., Lu, L. Z., 卢琳璋
core  

A global harmonic Arnoldi method for large non-Hermitian eigenproblems with an application to multiple eigenvalue problems

, 2010
The global Arnoldi method can be used to compute exterior eigenpairs of a large non-Hermitian matrix A, but it does not work well for interior eigenvalue problems.
Duan, Congying, Jia, Zhongxiao
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Legume proteins : ACE-inhibitory activity of enzymatic hydrolysates

, 2014
The enzymatic hydrolysis of legume proteins produce peptide mixtures able to inhibit angiotensin-converting enzyme (ACE), that is involved in the renin-angiotensin system for the regulation of blood pressure [1].
A. Arnoldi, D. Resta, G. M. Scigliuolo, G. Boschin   +3 more
core  

Approximate Exponential Integrators for Time-Dependent Equation-of-Motion Coupled Cluster Theory. [PDF]

J Chem Theory Comput, 2023
Williams-Young DB, Yuwono SH, DePrince Iii AE, Yang C.   +3 more
europepmc   +1 more source

HPLC-Chip-Multiple Reaction Monitoring (MRM) method for the label-free absolute quantification of γ-conglutin in lupin: Proteotypic peptides and standard addition method

, 2012
In food science there is a growing demand of methods for the absolute quantification of proteins, such as allergens or bioactive proteins, and shotgun proteomics based on mass spectrometry is a promising analytical tool in this area. This paper describes
Francesca Brambilla, F. Brambilla, A. Arnoldi, D. Resta, Donatella Resta, Anna Arnoldi   +5 more
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On Restarting the Generalized Second-order Arnoldi Method for the Quadratic Eigenvalue Problems [PDF]

, 2011
基于正交投影与Arnoldi过程，产生了二阶Arnoldi(SOAR)方法。其不仅可直接作用于二次特征值问题去计算一些特征值，而且保持了原问题的结构。然而SOAR方法却不能进行有效的重新启动，为了能进行重新启动，对SOAR方法进行修正，提出了广义的二阶Arnoldi(GSOAR)过程，并且为了得到更精确的近似向量，结合精化投影技术得到精化广义二阶Arnoldi过程。利用广义二阶Arnoldi过程与Arnoldi过程的关系，本文先介绍将两种经典的重新启动方法运用于精化广义二阶Arnoldi过程中 ...
吴倩
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