Results 81 to 90 of about 9,757 (303)
On the Sensitivity of Some Spectral Preconditioners [PDF]
SIAM Journal on Matrix Analysis and Applications, 2006 It is well known that the convergence of the conjugate gradient method for solving symmetric positive definite linear systems depends to a large extent on the eigenvalue distribution. In many cases, it is observed that "removing" the extreme eigenvalues can greatly improve the convergence.
Giraud, L., Gratton, S.
openaire +2 more sources
The Multi-resolution preconditioner
The purpose of this chapter is to provide the main guidelines for an efficient implementation of the multi-resolution (MR) preconditioner for the electromagnetic (EM) analysis of perfect electric conductor (PEC) structures of arbitrary 3-D shape via the ...
Taboada, Jose M. +2 more
core +1 more source
A polynomial preconditioner for the GMRES algorithm [PDF]
, 1995 The major drawback of GMRES is that the storage demands and the number of operations per iteration increase with the number of iterations. It is important to avoid that so many iterations are needed that the work per iteration and the storage ...
van Gijzen, M.B.
core +1 more source
Adsorption‐Engineered Hydrocarbon Ionomers for Durable Proton‐Exchange Membrane Fuel Cells
Advanced Materials, EarlyView.Hydrocarbon ionomers suffer from oxidation‐driven interfacial degradation in PEM fuel cell cathodes, leading to catalyst instability. Here, adsorption‐engineered poly(fluorene) ionomers decouple interfacial anchoring from oxidative degradation, enabling strong catalyst–ionomer interactions while resisting electrochemical oxidation.
Heemin Park +14 more
wiley +1 more source
A generalized preconditioned MHSS method for a class of complex symmetric linear systems
Mathematical Modelling and Analysis, 2013 Based on the MHSS (Modified Hermitian and skew-Hermitian splitting) and preconditioned MHSS methods, we will present a generalized preconditioned MHSS method for solving a class of complex symmetric linear systems.
Mehdi Dehghan +2 more
doaj +1 more source
FSAI Preconditioner for Reservoir Simulations
In most of the fully implicit reservoir simulations, the CPR-like preconditioner, which relies heavily on ILU-type preconditioning, is the most widely used. However, ILU is inherently a sequential algorithm.
Carlo Janna +2 more
core +1 more source
A preconditioner for the 3D Oseen equations [PDF]
, 2002 We describe a preconditioner for the linearised incompressible Navier-Stokes equations (the Oseen equations) which requires as components only a preconditioner/solver for each of a discrete Laplacian and a discrete advection-diffusion operator. With this
H. C. Elman +14 more
core
An Incomplete LU Preconditioner for Problems in Acoustics
, 2005 We present an incomplete LU preconditioner for solving discretized Helmholtz problems. The preconditioner is based on an analytic factorization of the Helmholtz operator.
Nataf, Frédéric, Gander, Martin Jakob
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Advanced Materials, EarlyView.Intrinsic material dynamics are harnessed as computational resources for neuromorphic in‐materio physical reservoir computing. Defects, ionic motion, interfaces, percolation, geometry, and biasing shape transient states that provide fading memory, nonlinearity, and high‐dimensional projection for simple readout. A descriptor‐to‐dynamics framework links
Kshitij RB Singh +5 more
wiley +1 more source
Controlled Synthesis of Tri‐ and Multi‐Doped Graphene
Advanced Materials Interfaces, EarlyView.This review systematically evaluates synthesis routes for tri‐ and multi‐doped graphene, from hydrothermal and pyrolysis methods to flash Joule heating, critically assessing how each governs dopant incorporation, bonding configuration, and resulting electronic properties.
Maria Hasan +4 more
wiley +1 more source