Results 21 to 30 of about 2,146,103 (291)
Crystals, 2023 Conventional acoustic systems exhibit a difficulty in sensing weak acoustic fault signals in complex mechanical vibration environments. Therefore, it is necessary to develop an acoustic sensing mode and a corresponding functional device with pressure ...
Xinsa Zhao +3 more
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String Method for Generalized Gradient Flows: Computation of Rare Events in Reversible Stochastic Processes [PDF]
, 2019 Rare transitions in stochastic processes can often be rigorously described via an underlying large deviation principle. Recent breakthroughs in the classification of reversible stochastic processes as gradient flows have led to a connection of large ...
Grafke, Tobias
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Shape Gradient for Isogeometric Structural Design [PDF]
Journal of Optimization Theory and Applications, 2013 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Blanchard, Louis +3 more
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Gamma-convergence of a gradient-flow structure to a non-gradient-flow structure
Calculus of Variations and Partial Differential Equations, 2022 AbstractWe study the asymptotic behaviour of a gradient system in a regime in which the driving energy becomes singular. For this system gradient-system convergence concepts are ineffective. We characterize the limiting behaviour in a different way, by proving $$\Gamma $$ Γ -convergence of the so-called energy ...
Mark A. Peletier, Mikola C. Schlottke
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Cross-diffusion systems with excluded volume effects and asymptotic gradient flows [PDF]
, 2016 In this paper we discuss the analysis of a cross-diffusion PDE system for a mixture of hard spheres, which was derived by Bruna and Chapman from a stochastic system of interacting Brownian particles using the method of matched asymptotic expansions.
Bruna, Maria +3 more
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On microscopic origins of generalized gradient structures [PDF]
, 2015 Classical gradient systems have a linear relation between rates and driving forces. In generalized gradient systems we allow for arbitrary relations derived from general non-quadratic dissipation potentials.
Liero, Matthias +3 more
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Second Gradient Models and Concrete Structures [PDF]
, 2017 Damage induces strain localization in quasi-brittle materials such as concrete. In order to correctly simulate this behaviour, it is necessary to introduce a length scale parameter in the continuum model. The second gradient model, a special case of kinematically enriched continua, uses an internal length parameter by taking into account the second ...
Jouan, G. +3 more
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Numerical analysis of a robust free energy diminishing Finite Volume scheme for parabolic equations with gradient structure [PDF]
, 2016 We present a numerical method for approximating the solutions of degenerate parabolic equations with a formal gradient flow structure. The numerical method we propose preserves at the discrete level the formal gradient flow structure, allowing the use of
Cancès, Clément, Guichard, Cindy
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Gradients of structure-function tethering across neocortex [PDF]
Proceedings of the National Academy of Sciences, 2019 The white matter architecture of brain networks imparts a distinct signature on neuronal co-activation patterns. Inter-regional projections promote synchrony among distant neuronal populations, giving rise to richly patterned functional networks. A variety of statistical, communication and biophysical models have been proposed to study the relationship
Bertha Vázquez-Rodríguez +9 more
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Литьë и металлургия, 2023 In this work, the task was to investigate the processes of microstructure change occurring in relatively large bulk bars under the action of large plastic deformations.
N. A. Lutchenko +5 more
doaj +1 more source