Results 31 to 40 of about 27,409 (168)

Comparative study of discretization methods of microarray data for inferring transcriptional regulatory networks

open access: yesBMC Bioinformatics, 2010
Background Microarray data discretization is a basic preprocess for many algorithms of gene regulatory network inference. Some common discretization methods in informatics are used to discretize microarray data.
Ji Wei   +6 more
doaj   +1 more source

Spectral discretization of the time-dependent Navier-Stokes problem with mixed boundary conditions

open access: yesAdvances in Nonlinear Analysis, 2022
In this work, we handle a time-dependent Navier-Stokes problem in dimension three with a mixed boundary conditions. The variational formulation is written considering three independent unknowns: vorticity, velocity, and pressure.
Abdelwahed Mohamed, Chorfi Nejmeddine
doaj   +1 more source

New Stability Tests for Discretized Fractional-Order Systems Using the Al-Alaoui and Tustin Operators

open access: yesComplexity, 2018
This paper provides new results on a stable discretization of commensurate fractional-order continuous-time LTI systems using the Al-Alaoui and Tustin discretization methods.
Rafał Stanisławski   +2 more
doaj   +1 more source

The Finite Volume WENO with Lax–Wendroff Scheme for Nonlinear System of Euler Equations

open access: yesMathematics, 2018
We develop a Lax–Wendroff scheme on time discretization procedure for finite volume weighted essentially non-oscillatory schemes, which is used to simulate hyperbolic conservation law.
Haoyu Dong, Changna Lu, Hongwei Yang
doaj   +1 more source

An Energy Consistent Discretization of the Nonhydrostatic Equations in Primitive Variables

open access: yesJournal of Advances in Modeling Earth Systems, 2020
We derive a formulation of the nonhydrostatic equations in spherical geometry with a Lorenz staggered vertical discretization. The combination conserves a discrete energy in exact time integration when coupled with a mimetic horizontal discretization ...
Mark A. Taylor   +5 more
doaj   +1 more source

A Discrete-Time State Estimation for Nonlinear Systems With Noises

open access: yesIEEE Access, 2020
This paper proposes a discrete-time observer to estimate states of continuous-time nonlinear systems with presences of noises. Most conventional discrete-time state observers are designed using discrete-time models, which are derived by applying the ...
Triet Nguyen-Van
doaj   +1 more source

Discrete-Valued Time Series

open access: yesEntropy, 2023
Time series are sequentially observed data in which important information about the phenomenon under consideration is contained not only in the individual observations themselves, but also in the way these observations follow one another [...]
openaire   +3 more sources

Classical stochastic discrete time crystals [PDF]

open access: yesPhysical Review E, 2019
We describe a possible general and simple paradigm in a classical thermal setting for discrete time crystals (DTCs), systems with stable dynamics which is subharmonic to the driving frequency thus breaking discrete time-translational invariance. We consider specifically an Ising model in two dimensions, as a prototypical system with a phase transition ...
F. M. Gambetta   +4 more
openaire   +3 more sources

High-Order Time Discretization of The Wave Equation by Nabla-P Scheme.*

open access: yesESAIM: Proceedings and Surveys, 2014
High-order Discontinuous Galerkin Methods (DGM) are now routinely used for simulation of wave propagation, especially for geophysical applications.
Barucq Hélène   +3 more
doaj   +1 more source

Dynamics of Structures with Distributed Gyroscopes: Modal Discretization Versus Spatial Discretization

open access: yesApplied Sciences, 2019
In this study, two discretization numerical methods, modal discretization and spatial discretization methods, were proposed and compared when applied to the gyroscopic structures.
Xiao-Dong Yang   +3 more
doaj   +1 more source

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