Results 31 to 40 of about 10,929 (167)

Inverse Source Problem for Sobolev Equation with Fractional Laplacian

open access: yesJournal of Function Spaces, 2022
In this paper, we are interested in the problem of determining the source function for the Sobolev equation with fractional Laplacian. This problem is ill-posed in the sense of Hadamard.
Nguyen Duc Phuong   +2 more
doaj   +1 more source

A Posteriori Error Estimates for Pressure-Correction Schemes [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2016
Summary: A posteriori error estimates for time discretization of the incompressible Stokes equations by pressure-correction methods are presented. We rigorously prove global upper bounds for the incremental backward Euler scheme as well as for the two-step backward differential formula method (BDF2) in rotational form.
Eberhard Bänsch, Andreas Brenner
openaire   +2 more sources

Adaptivní nepřesné newtonovy metody s a posteriorními zastavovacími kritérii [PDF]

open access: yesACC Journal, 2012
V této práci uvažujeme systémy nelineárních algebraických rovnic vznikající při numerické diskretizaci nelineárních parciálnich diferenciálních rovnic difúzního typu.
Alexandre Ern, Vohralík. Martin
doaj  

Reservoir Simulator Runtime Enhancement Based on a Posteriori Error Estimation Techniques

open access: yesOil & Gas Science and Technology, 2016
In this work, we show how the a posteriori error estimation techniques proposed in [Di Pietro et al. (2014) Computers & Mathematics with Applications 68, 2331-2347] can be efficiently employed to improve the performance of a compositional reservoir ...
Gratien Jean-Marc   +2 more
doaj   +1 more source

Identification of source term for the ill-posed Rayleigh–Stokes problem by Tikhonov regularization method

open access: yesAdvances in Difference Equations, 2019
In this paper, we study an inverse source problem for the Rayleigh–Stokes problem for a generalized second-grade fluid with a fractional derivative model. The problem is severely ill-posed in the sense of Hadamard. To regularize the unstable solution, we
Tran Thanh Binh   +4 more
doaj   +1 more source

State of charge estimation of li-ion batteries based on the noise-adaptive interacting multiple model

open access: yesEnergy Reports, 2021
This paper presents a type of noise-adaptive (NA) interacting multiple model (IMM) algorithm combined with an unscented Kalman filter (UKF) in order to address problems in poor filtering accuracy and filtering divergence of IMM caused by the statistical ...
Ce Huang   +4 more
doaj   +1 more source

Bayesian Network Demand-Forecasting Model Based on Modified Particle Swarm Optimization

open access: yesApplied Sciences, 2023
With the increasing variety of products, the increasing substitutability of products, and the trend of customized products, the volatility of market demand is increasing, which poses a challenge to make accurate demand forecasting. The Bayesian method is
Shebiao Hu, Kun Li
doaj   +1 more source

A Mollification Regularization Method for the Inverse Source Problem for a Time Fractional Diffusion Equation

open access: yesMathematics, 2019
We consider a time-fractional diffusion equation for an inverse problem to determine an unknown source term, whereby the input data is obtained at a certain time. In general, the inverse problems are ill-posed in the sense of Hadamard. Therefore, in this
Le Dinh Long   +3 more
doaj   +1 more source

cgMSI: pathogen detection within species from nanopore metagenomic sequencing data

open access: yesBMC Bioinformatics, 2023
Background Metagenomic sequencing is an unbiased approach that can potentially detect all the known and unidentified strains in pathogen detection. Recently, nanopore sequencing has been emerging as a highly potential tool for rapid pathogen detection ...
Xu Zhu   +5 more
doaj   +1 more source

Neural functional a posteriori error estimates

open access: yesCoRR
Under review for ICML2024, was reviewed at https://openreview.net/forum?id=z62Xc88jgF for ...
Vladimir Fanaskov   +2 more
openaire   +2 more sources

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