Results 51 to 60 of about 14,981 (281)

Conjugate gradient type methods and preconditioning

open access: yesJournal of Computational and Applied Mathematics, 1988
The properties of various iterative methods for the numerical solution of very large, sparse linear systems of equations are reviewed in order to assist the user in making a deliberate selection. Tables that help to make a choice in iterative methods and preconditionings for certain types of problems are presented.
Van der Vorst, Henk A., Dekker, Kees
openaire   +2 more sources

Preconditioned Conjugate Gradient Method for Solution of Large Finite Element Problems on CPU and GPU

open access: yesJournal of Telecommunications and Information Technology, 2016
In this article the preconditioned conjugate gradient (PCG) method, realized on GPU and intended to solution of large finite element problems of structural mechanics, is considered.
Sergiy Yu. Fialko , Filip Zeglen
doaj   +1 more source

Time-Stepped Finite-Element Modeling of Three-Phase Transformer for Electromagnetic Transient Emulation on FPGA

open access: yesIEEE Open Access Journal of Power and Energy, 2021
The finite-element analysis is a powerful method to obtain detailed insight into the operation of any electromagnetic equipment. However, the required computational power to solve a finite-element modeled power equipment is so heavy that most Newton ...
Qingjie Xu, Peng Liu, Venkata Dinavahi
doaj   +1 more source

Conditioning analysis of block incomplete factorization and its application to elliptic equations [PDF]

open access: yes, 1997
The paper deals with eigenvalue estimates for block incomplete fac- torization methods for symmetric matrices. First, some previous results on upper bounds for the maximum eigenvalue of preconditioned matrices are generalized to each eigenvalue.
Axelsson, Owe, Lu, Hao
core   +2 more sources

Low-complexity signal detection algorithm based on preconditioned conjugate gradient method

open access: yesDianxin kexue, 2016
For large-scale multiple-input multiple-output system,minimum mean square error signal detection algorithm is near-optimal but involves matrix inversion,and complexity is growing exponentially.
Hua QU   +3 more
doaj   +2 more sources

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

open access: yesAdvanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora   +4 more
wiley   +1 more source

Overlapping communications and computations in GPU-based iterative linear solvers

open access: yesТруды Института системного программирования РАН, 2018
Krylov subspace methods such as Conjugate Gradient and Biconjugate Gradient Stabilized methods are well known approaches for solving symmetric and asymmetric systems of linear algebraic equations, such as systems usually arising from partial differential
V. . Platonov, A. . Monakov
doaj   +1 more source

Transforming Total‐Field Magnetic Anomalies Into Three Components Using Dual‐Layer Equivalent Sources

open access: yesGeophysical Research Letters, 2020
The equivalent source is a simple and effective method to level and manipulate magnetic data. However, large misfits between the predicted and synthetic data for different components of the magnetic field are observed when a single layer equivalent ...
Duan Li   +5 more
doaj   +1 more source

Self‐Assembled Nanoclay Gel With Spheroid MSC‐Derived Exosome Mimetics to Integrate Demineralized Bone Matrix and Noggin‐Targeting miRNA for Synergistic Osteogenesis

open access: yesAdvanced Functional Materials, EarlyView.
We report a versatile nanoclay gel carrier platform that enhances the osteogenic efficacy of demineralized bone matrix (DBM) by integrating nanoclay‐based self‐assembly with cell‐derived exosome mimetics loaded with noggin‐targeting miR‐200c. This design amplifies BMP signaling, thereby promoting DBM‐mediated osteogenesis and offering a promising ...
Changlu Xu   +7 more
wiley   +1 more source

Aggregating distributed energy resources for grid flexibility services: A distributed game theoretic approach

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView., 2023
Abstract We propose a hierarchical energy management scheme for aggregating Distributed Energy Resources (DERs) for grid flexibility services. To prevent a direct participation of numerous prosumers in the wholesale electricity market, aggregators, as self‐interest agents in our scheme, incentivize prosumers to provide flexibility. We firstly model the
Xiupeng Chen   +3 more
wiley   +1 more source

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