Results 71 to 80 of about 1,323,147 (330)

Pullback and uniform exponential attractors for non-autonomous Oregonator systems

Open Mathematics
We consider the long-time global dynamics of non-autonomous Oregonator systems. This system is a coupled system of three reaction-diffusion equations, that arises from the Belousov-Zhabotinskii reaction.
Liu Na, Yu Yang-Yang
doaj   +1 more source

Exponential attractor for the Higher-order Kirchhoff-type equation with nonlinear strongly damped term [PDF]

, 2017
We investigate the existence of exponential attractor for the Higher-order Kirchhoff-type equation with nonlinear strongly damped term: .For strong nonlinear damping σ(s) and φ(s) ,we assumptions .Under of the proper assume H1-H3, we first prove the ...
Gao, Y. (Yunlong), Lin, G. (Guoguang), Sun, Y. (Yuting)   +2 more
core  

Exponential attractors for nonautonomous evolution equations

Applied Mathematics Letters, 1998
Abstract Our aim in this note is to construct exponential attractors for quasiperiodic nonautonomous evolution equations. The main ingredient to obtain the existence of such sets is the so-called squeezing property; and we present two methods to prove this property.
openaire   +2 more sources

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Pre - Inflationary Clues from String Theory ?

, 2014
"Brane supersymmetry breaking" occurs in String Theory when the only available combinations of D-branes and orientifolds are not mutually BPS and yet do not introduce tree-level tachyon instabilities.
A. Gruppuso, A. Gruppuso ., A. Kamenev, A. Sagnotti, A. Sagnotti, A. Sagnotti, A. Sen, A.A. Andrianov, A.Y. Kamenshchik, B. Zwiebach, C. Condeescu, C.V. Johnson, D.H. Lyth, D.S. Gorbunov, D.Z. Freedman, E. Bergshoeff, E. Dudas, E. Dudas, E. Kiritsis, E.A. Bergshoeff, E.A. Bergshoeff, F.G. Pedro, G. Aldazabal, G.F. Giudice, G.F. Giudice, I.P.C. Heard, J. Ellis, J. Martin, J. Polchinski, J. Wess, J.M. Maldacena, K. Becker, M. Cicoli, M. Shifman, M.B. Green, N. Kitazawa, P. Fré, P. Fré, P.K. Townsend, Planck collaboration, Planck collaboration, Planck collaboration, Planck collaboration, R. Barbieri, R. Bousso, R. Emparan, R. Kallosh, R. Kallosh, R.K. Jain, S. Ferrara, S. Ferrara, S. Ferrara, S. Weinberg, S.V. Ketov, V. Mukhanov, V.F. Mukhanov, V.F. Mukhanov, WMAP collaboration, WMAP collaboration, Y. Golfand, Y. Golfand, Z.-G. Liu   +61 more
core   +1 more source

Robocasting of a Water‐Based Biopolymer/WO3 Nanopowder Paste as a Precursor to Tungsten Carbide Lattices

Advanced Engineering Materials, EarlyView.
This study demonstrates a novel, additive manufacturing approach to produce complex, porous tungsten carbide structures using water‐based direct ink writing/robocasting. Leveraging a modified commercial printer and heat treatment, the process yields lightweight, electrically conductive 3D architectures capable of supporting a mechanical load.
James Bentley Bevis, Manasi Shah, Sanketh Gombi, Rodrigo Martinez‐Duarte   +3 more
wiley   +1 more source

Global Stability of Approximation for Exponential Attractors

Funkcialaj Ekvacioj, 2004
This paper is concerned with the initial value problem for some diffusion system which describes the process of a pattern formation of biological individuals by chemotaixis and growth. In the paper Osaki et al. [13], exponential attractors have been constructed for the dynamical system determined by this problem.
Atsushi Yagi, Masashi Aida
openaire   +3 more sources

Multiscale Modeling of Process‐Induced Defects in Fused Filament Fabrication‐Printed Materials

Advanced Engineering Materials, EarlyView.
This study presents a predictive multiscale modeling tool for defect analysis of fused filament fabricated‐printed materials and their performance prediction using a mechanistic data science‐based reduced‐order modeling approach. Process‐induced defects are inherent to additively manufactured parts and significantly influence the performance of printed
Satyajit Mojumder, Derick Suarez, Trevor Abbott, Wing Kam Liu   +3 more
wiley   +1 more source

Estimates on the dimension of an exponential attractor for a delay differential equation

, 2014
We study the long time behavior of delay differential equation, considered in a bounded domain in ℝd. Using the short trajectory method to prove the existence of the exponential attractor. Also we have estimates on the fractal dimension of an exponential
Sakineh Habibi
semanticscholar   +1 more source

A New Chaotic Attractor with Quadratic Exponential Nonlinear Term from Chen’s Attractor

International Journal of Analysis and Applications, 2014
In this paper a new three-dimensional chaotic system is proposed, which relies on a nonlinear exponential term and a nonlinear quadratic cross term necessary for folding trajectories.
Iftikhar Ahmed, Chunlai Mu, Fuchen Zhang
doaj   +2 more sources