Results 21 to 30 of about 267,847 (164)

Finite-Difference Analysis of Influence of Borehole Diameter and Spacing on Reduction in Rockburst Potential of Burst-Prone Coal Seams

open access: yesMining
Decreasing the rockburst potential in longwall mining of burst-prone coal seams has been a longstanding challenge for geotechnical engineering worldwide.
Mikhail O. Eremin   +4 more
doaj   +1 more source

On the wave dynamics in damaged shells interacting with the volume of the cavitating liquid

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2016
We study the details of shock front propagation in the system of deformable medium (shells) with damages and two-phase liquid with gas or steam bubbles. We develop the models for the nonlinear processes of media interacting taking into account the phase ...
Vladimir A Petushkov
doaj   +1 more source

Random motion of a circle microswimmer in a random environment

open access: yesNew Journal of Physics, 2020
We simulate the dynamics of a single circle microswimmer exploring a disordered array of fixed obstacles. The interplay of two different types of randomness, quenched disorder and stochastic noise, is investigated to unravel their impact on the transport
Oleksandr Chepizhko, Thomas Franosch
doaj   +1 more source

Stability of Breathers for a Periodic Klein–Gordon Equation

open access: yesEntropy
The existence of breather-type solutions, i.e., solutions that are periodic in time and exponentially localized in space, is a very unusual feature for continuum, nonlinear wave-type equations.
Martina Chirilus-Bruckner   +2 more
doaj   +1 more source

Drift perturbation’s influence on traveling wave speed in KPP-Fisher system

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
This paper dressed the drift perturbation effects on the traveling wave speed in a reaction-diffusion system. We prove the existence of a traveling front solution of a KPP-Fisher equation and we show an asymptotic expansion of her speed.
Dkhil Fathi, Mannoubi Bechir
doaj   +1 more source

How Environmental Uncertainty Drives Asymmetric Mispricing in China: Dual Channels and Heterogeneous Media Effect

open access: yesInternational Journal of Financial Studies
The essay delves into the impact of environmental uncertainty on asymmetric mispricing, utilizing the data from listed firms in China spanning from 2007 to 2023.
Shuya Hu, Shengnian Wang
doaj   +1 more source

Avalanche dynamics for active matter in heterogeneous media

open access: yesNew Journal of Physics, 2018
Using numerical simulations, we examine the dynamics of run-and-tumble disks moving in a disordered array of fixed obstacles. As a function of increasing active disk density and activity, we find a transition from a completely clogged state to a ...
C J O Reichhardt, C Reichhardt
doaj   +1 more source

Shear Correction Factor for Porous Eco-Materials: Mechanical Characterization of a Heterogeneous Medium

open access: yesBuildings
Classical formulas for the shear correction factor ks, typically derived for homogeneous continua, are unsuitable for porous media exhibiting local density gradients, irregular pore morphologies, and spatially varying stiffness.
Julia Graczyk   +2 more
doaj   +1 more source

A MIXED BOOLEAN AND DEPOSIT MODEL FOR THE MODELING OF METAL PIGMENTS IN PAINT LAYERS

open access: yesImage Analysis and Stereology, 2015
Pigments made of metal particles of around 10 µm or 20 µm produce sparkling effects in paints, due to the specular reflection that occurs at this scale.
Enguerrand Couka   +2 more
doaj   +1 more source

Numerical homogenization of multi-scale heterogeneous media

open access: yesГеофизический журнал, 2012
A problem of electrical potential distribution in media, containing micro-inclusions with highly contrasting physical properties and different geometric shapes, was considered. Multiscale finite element method has been chosen as a solver.
M. I. Epov   +2 more
doaj   +1 more source

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