Results 11 to 20 of about 850,239 (250)

On nonlinear strain vectors and tensors in continuum theories of mechanics

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2014
A non-linear mathematical model of hyperbolic thermoelastic continuum with fine microstructure is proposed. The model is described in terms of 4-covariant field theoretical formalism.
Vladimir A Kovalev, Yuriy N Radayev
doaj   +1 more source

Stochastic conservation laws? [PDF]

open access: yesChaos, Solitons & Fractals, 2000
We examine conservation laws, typically the conservation of linear momentum, in the light of a recent successful formulation of fermions as Kerr-Newman type Black Holes, which are created fluctuationally from a background Zero Point Field. We conclude that these conservation laws are to be taken in the spirit of thermodynamic laws.
openaire   +2 more sources

Variational problem, Lagrangian and $\mu$-conservation law of the generalized Rosenau-type equation [PDF]

open access: yesAUT Journal of Mathematics and Computing
The goal of this article is to compute conservation law, Lagrangian and $\mu$-conservation law of the generalized Rosenau-type equation using the homotopy operator, the $\mu$-symmetry method and the variational problem method.
Khodayar Goodarzi
doaj   +1 more source

Tensorial conservation law for nematic polymers [PDF]

open access: yes, 2013
We derive the "conservation law" for nematic polymers in tensorial form valid for quadrupolar orientational order in contradistinction to the conservation law in the case of polar orientational order.
Grason, Gregory M.   +2 more
core   +2 more sources

The limit of vanishing viscosity for doubly nonlinear parabolic equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2014
We show that solutions of the doubly nonlinear parabolic equation \begin{equation*} \frac{\partial b(u)}{\partial t} - \epsilon \operatorname{div}(a(\nabla u)) + \operatorname{div}(f(u)) = g \end{equation*} converge in the limit $\epsilon ...
Ales Matas, Jochen Merker
doaj   +1 more source

A statistical conservation law in two and three dimensional turbulent flows [PDF]

open access: yes, 2015
Particles in turbulence live complicated lives. It is nonetheless sometimes possible to find order in this complexity. It was proposed in [Falkovich et al., Phys. Rev. Lett.
Boffetta, Guido   +3 more
core   +2 more sources

Searching for Conservation Laws in Brain Dynamics—BOLD Flux and Source Imaging

open access: yesEntropy, 2014
Blood-oxygen-level-dependent (BOLD) imaging is the most important noninvasive tool to map human brain function. It relies on local blood-flow changes controlled by neurovascular coupling effects, usually in response to some cognitive or perceptual task ...
Henning U. Voss, Nicholas D. Schiff
doaj   +1 more source

Compensatory measures in European nature conservation law [PDF]

open access: yes, 2014
The Birds and Habitats Directives are the cornerstones of EU nature conservation law, aiming at the conservation of the Natura 2000 network, a network of protected sites under these directives, and the protection of species.
Van Hoorick, Geert
core   +5 more sources

Mathematical study on the thickened interface model by viscosity solution of the level-set equation

open access: yesJournal of Thermal Science and Technology, 2022
The level-set approach extended for its viscosity solution is investigated to derive a relation to the conservation law of fluid phenomena and the phase-field approach based on the free energy theory.
Nobuyuki OSHIMA
doaj   +1 more source

A discrete Hughes model for pedestrian flow on graphs

open access: yesNetworks and Heterogeneous Media, 2017
In this paper, we introduce a discrete time-finite state model for pedestrian flow on a graph in the spirit of the Hughes dynamic continuum model. The pedestrians, represented by a density function, move on the graph choosing a route to minimize the ...
Fabio Camilli   +2 more
doaj   +1 more source

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