Results 71 to 80 of about 9,971 (304)
Improved New Block Preconditioner for Solving 3 × 3 Block Saddle Point Problems
AxiomsIn order to overcome the computational challenges associated with block preconditioners for Krylov subspace methods, particularly those arising from Schur complement systems, this paper proposes an improved new block (INB) preconditioner for solving 3 ...
Xin-Hui Shao, Xin-Yang Liu
doaj +1 more source
, 2019 International audienceIn this paper, we propose a stabilized dimensional factorization (SDF) preconditioner for saddle point problems arising from the discretization of Navier-Stokes equations. The idea is based on regularization, block factorization and
Xu, Yingxiang +2 more
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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
Design and analysis of Toeplitz preconditioners [PDF]
IEEE Transactions on Signal Processing, 1992 The preconditioned conjugate gradient method (PCG) for solving symmetric positive definite Toeplitz systems \(Ax=b\) can be derived by iteratively minimizing the quadratic form \(x^ TAx/2-b^ Tx\) with the conjugate gradient method and preconditioning. Since the convergence rate of the conjugate gradient method depends on the spectrum of the matrix \(A\)
Ta-Kang Ku, C.-C. Jay Kuo
openaire +4 more sources
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
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Mechanoactive Biomaterials for Cell–Matrix Mechanotransduction
Advanced Materials, EarlyView.The graphical abstract shows how individual triggers (force, light, or temperature) and combined optothermal or receptor‐targeted actuation induce material responses at the tissue, cellular, and receptor scales. Their spatial (global or focused) and temporal (continuous or cyclic) modulation determines the resulting mechanical output.
Yi‐Tung Lu +2 more
wiley +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 +4 more
core
Partially Updated Restricted Additive Schwarz Preconditioner
, 2016 International audienceThe solution of differential equations with implicit methods requires the solution of a nonlinear problem at each time step. We consider Newton-Krylov ([8], Chap.
Laurent Berenguer +3 more
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Advanced Materials Interfaces, EarlyView.Amphiphilic non‐isocyanate polyurethane (NIPU) coatings containing reactive hydrophobic poly(dimethylsiloxane) (PDMS) and hydrophilic methoxy poly(ethylene glycol) (MPEG) prepolymers for marine antifouling (AF) and fouling‐release (FR) applications were investigated. The coatings were evaluated with a set of representative marine foulants.
Nastaran Shahzadeh +7 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
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