Results 21 to 30 of about 1,809,735 (299)

Auto-differentiable Ensemble Kalman Filters [PDF]

open access: yesSIAM Journal on Mathematics of Data Science, 2021
Data assimilation is concerned with sequentially estimating a temporally-evolving state. This task, which arises in a wide range of scientific and engineering applications, is particularly challenging when the state is high-dimensional and the state ...
Yuming Chen, D. Sanz-Alonso, R. Willett
semanticscholar   +1 more source

Temporal Asymmetry, Entropic Irreversibility, and Finite-Time Thermodynamics: From Parmenides–Einstein Time-Reversal Symmetry to the Heraclitan Entropic Arrow of Time

open access: yesEntropy, 2012
In this paper, we combine the two universalisms of thermodynamics and dynamical systems theory to develop a dynamical system formalism for classical thermodynamics. Specifically, using a compartmental dynamical system energy flow model we develop a state-
Wassim M. Haddad
doaj   +1 more source

Global stability in a modified Leslie-Gower type predation model assuming mutual interference among generalist predators

open access: yesMathematical Biosciences and Engineering, 2020
In the ecological literature, mutual interference (self-interference) or competition among predators (CAP) to effect the harvesting of their prey has been modeled through different mathematical formulations.
Eduardo Gonzalez-Olivares   +1 more
doaj   +1 more source

Fluid flow dynamics under location uncertainty [PDF]

open access: yes, 2013
We present a derivation of a stochastic model of Navier Stokes equations that relies on a decomposition of the velocity fields into a differentiable drift component and a time uncorrelated uncertainty random term.
Mémin, Etienne
core   +4 more sources

Human Brain Networks: Spiking Neuron Models, Multistability, Synchronization, Thermodynamics, Maximum Entropy Production, and Anesthetic Cascade Mechanisms

open access: yesEntropy, 2014
Advances in neuroscience have been closely linked to mathematical modeling beginning with the integrate-and-fire model of Lapicque and proceeding through the modeling of the action potential by Hodgkin and Huxley to the current era.
Wassim M. Haddad   +2 more
doaj   +1 more source

Compactification for asymptotically autonomous dynamical systems: theory, applications and invariant manifolds [PDF]

open access: yes, 2020
We develop a general compactification framework to facilitate analysis of nonautonomous ODEs where nonautonomous terms decay asymptotically. The strategy is to compactify the problem: the phase space is augmented with a bounded but open dimension and ...
S. Wieczorek, Chun-ming Xie, C. Jones
semanticscholar   +1 more source

Dynamics of the polynomial differential systems

open access: yesTurkish Journal of Computer and Mathematics Education (TURCOMAT), 2023
In general, there are several free parameters. By using a method introduced in a previous paper,  we obtain a sequence of algebraic a proximations to the bifurcationsets,in the parameter ...
Feneniche Fatima, Rezaoui Med Salem
openaire   +1 more source

On differentially dissipative dynamical systems [PDF]

open access: yesIFAC Proceedings Volumes, 2013
Dissipativity is an essential concept of systems theory. The paper provides an extension of dissipativity, named differential dissipativity, by lifting storage functions and supply rates to the tangent bundle. Differential dissipativity is connected to incremental stability in the same way as dissipativity is connected to stability.
Forni, F, Sepulchre, R
openaire   +3 more sources

Existence of solution to an evolution equation and a justification of the DSM for equations with monotone operators [PDF]

open access: yes, 2009
An evolution equation, arising in the study of the Dynamical Systems Method (DSM) for solving equations with monotone operators, is studied in this paper.
Hoang, N. S., Ramm, A. G.
core   +5 more sources

Robust Stability of a Class of Uncertain Lur'e Systems of Neutral Type

open access: yesAbstract and Applied Analysis, 2012
This paper deals with the problem of stability for a class of Lur’e systems with interval time-varying delay and sector-bounded nonlinearity. The interval time-varying delay function is not assumed to be differentiable.
W. Weera, P. Niamsup
doaj   +1 more source

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