Results 1 to 10 of about 192,240 (268)

Differential diffusion driven far-from-equilibrium shape-shifting of hydrogels [PDF]

open access: yesNature Communications, 2021
Synthetic shape-shifting materials typically rely on monotonic evolution between equilibrium states, limiting the shape-shifting behaviours. Here the authors report an unanticipated shape-shifting behaviour for a hydrogel that can be programmed to ...
Yue Zhang   +11 more
doaj   +2 more sources

Spatial and Temporal Oscillations of Surface Tension Induced by an A + B → C Traveling Front

open access: yesFrontiers in Physics, 2022
This work describes a new mechanism for the emergence of oscillatory dynamics driven by the interaction of hydrodynamic flows and reaction-diffusion processes with no autocatalytic feedback nor prescribed hydrodynamic instability involved.
Reda Tiani, Laurence Rongy
doaj   +1 more source

The Effects of Differential Diffusion on Turbulent Non-Premixed Flames LO2/CH4 under Transcritical Conditions Using Large-Eddy Simulation

open access: yesEnergies, 2023
In this paper, a large-eddy simulation (LES) of turbulent non-premixed LO2/CH4 combustion under transcritical conditions is performed based on the Mascotte test rig from the Office National d’Etudes et de Recherches Ae´rospatiales (ONERA), and the aim is
Siyuan Wang   +3 more
doaj   +1 more source

Differentiable Programming of Reaction-Diffusion Patterns [PDF]

open access: yesThe 2021 Conference on Artificial Life, 2021
Reaction-Diffusion (RD) systems provide a computational framework that governs many pattern formation processes in nature. Current RD system design practices boil down to trial-and-error parameter search. We propose a differentiable optimization method for learning the RD system parameters to perform example-based texture synthesis on a 2D plane. We do
Alexander Mordvintsev   +2 more
openaire   +2 more sources

Differentially Private Diffusion Models

open access: yesTrans. Mach. Learn. Res., 2022
Accepted at TMLR (https://openreview.net/forum?id=ZPpQk7FJXF)
Tim Dockhorn   +3 more
openaire   +3 more sources

Analysis and Recognition Method of Internet Image Public Opinion Based on Partial Differential Equation

open access: yesAdvances in Mathematical Physics, 2021
This article comprehensively and systematically expounds the development trends and basic theory of partial differential methods, analyzes the characteristics of sampling multiscale transformation in detail, and deeply studies the network image denoising
Yang Zhang
doaj   +1 more source

Existence and stability of traveling waves in parabolic systems of differential equations with weak diffusion

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2022
The aim of the present paper is to investigate of some properties of periodic solutions of a nonlinear autonomous parabolic systems with a periodic condition.
I.I. Klevchuk
doaj   +1 more source

Differential dissipativity analysis of reaction–diffusion systems [PDF]

open access: yesSystems & Control Letters, 2021
8 pages, 5 figures, Submitted to Systems and Control ...
Miranda-Villatoro, Félix A.   +1 more
openaire   +4 more sources

Fast Method for Estimating the Parameters of Partial Differential Equations from Inaccurate Observations

open access: yesMathematics, 2023
In this paper, the problems of estimating the parameters of partial differential equations from numerous observations in the vicinity of some reference points are considered.
Gurami Tsitsiashvili   +2 more
doaj   +1 more source

Advanced Analytic Self-Similar Solutions of Regular and Irregular Diffusion Equations

open access: yesMathematics, 2022
We study the diffusion equation with an appropriate change of variables. This equation is, in general, a partial differential equation (PDE). With the self-similar and related Ansatz, we transform the PDE of diffusion to an ordinary differential equation.
Imre Ferenc Barna, László Mátyás
doaj   +1 more source

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