Results 111 to 120 of about 3,306 (214)

Physics-Informed Neural Network Modeling of Nonlocal Crowd Dynamics for Evacuation Scenarios

East European Journal of Physics
We investigate a nonlocal continuum model of crowd dynamics using a physics-informed neural network approach. The crowd is described by a system of nonlinear conservation laws in which the flux incorporates advection, diffusion, and nonlocal interaction ...
A. Naumovets, P. Kuznietsov, V. Cherkashyn, A. Gakh   +3 more
doaj   +1 more source

Integrated Ultrasonic Platform for Bioelectronic Control through Biological Barriers Based on Metasurface

Advanced Science, Volume 13, Issue 43, 3 August 2026.
A metasurface‐enabled ultrasonic platform achieves precise multi‐focal control through biological barriers, real‐time physiology‐driven modulation, and simultaneous wireless power and data transmission. By unifying wavefront engineering, closed‐loop feedback, and acoustic communication, this work establishes key enabling technologies toward scalable ...
Chuanxin Zhang, Hanjie Xiao, Xue Jiang, Dean Ta   +3 more
wiley   +1 more source

Invariant Measure and Universality of the 2D Yang–Mills Langevin Dynamic

Communications on Pure and Applied Mathematics, Volume 79, Issue 8, Page 1973-2102, August 2026.
ABSTRACT We prove that the Yang–Mills (YM) measure for the trivial principal bundle over the two‐dimensional torus, with any connected, compact structure group, is invariant for the associated renormalised Langevin dynamic. Our argument relies on a combination of regularity structures, lattice gauge‐fixing and Bourgain's method for invariant measures ...
Ilya Chevyrev, Hao Shen
wiley   +1 more source

Fast Calculation for the Flow and Heat Transfer of Tempered Fractional Maxwell Viscoelastic Fluid

International Journal for Numerical Methods in Fluids, Volume 98, Issue 8, Page 969-979, August 2026.
This study develops a tempered fractional Maxwell model to simulate unsteady thermal flow in viscoelastic fluids, capturing key rheological behaviors. A fast SOE‐based algorithm is proposed to improve the computational efficiency of the numerical scheme. Results reveal how key parameters influence fluid motion and heat transfer, demonstrating the model'
Yi Liu, Mochen Jiang, Libo Feng
wiley   +1 more source

Traveling wave solutions of nonlocal delay reaction-diffusion equations without local quasimonotonicity

Electronic Journal of Differential Equations, 2014
This article concerns the traveling wave solutions of nonlocal delay reaction-diffusion equations without local quasimonotonicity. The existence of traveling wave solutions is obtained by constructing upper-lower solutions and passing to a limit ...
Shuxia Pan
doaj  

Advances in Position‐Momentum Entanglement: A Versatile Tool for Quantum Technologies

Laser &Photonics Reviews, Volume 20, Issue 15, 7 August 2026.
Position–momentum entanglement constitutes a high‐dimensional continuous‐variable resource in quantum optics. Recent advances in its generation, characterization, and control are reviewed, with emphasis on spontaneous parametric down‐conversion and modern measurement techniques.
Satyajeet Patil, Rajshree Swarnkar, Jonas L. Moos, Sebastian Töpfer, Sergio Tovar‐Pérez, Jorge Fuenzalida, Markus Gräfe   +6 more
wiley   +1 more source

A hybrid deep learning framework for real‐time speckle reduction and image enhancement on portable ultrasound systems

Medical Physics, Volume 53, Issue 8, August 2026.
Abstract Background Speckle patterns in ultrasound images often obscure anatomical details, leading to diagnostic uncertainty. Recently, various deep learning‐based techniques have been introduced to effectively suppress speckle; however, their high computational costs pose challenges for low‐resource devices, such as portable ultrasound systems ...
Hyunwoo Cho, Jaeseok Lee, Jongsoo Lee, Yangmo Yoo, Jinbum Kang   +4 more
wiley   +1 more source

Spatiotemporal Dynamics for a Diffusive Predator-Prey Model with Nonlocal Competition in a Circular Domain

Mathematics
Within a circular symmetric domain, we investigate the corresponding dynamic behaviors of a reaction-diffusion predator-prey system with nonlocal competition.
Xiuyan Xu, Ming Liu, Xiaofeng Xu
doaj   +1 more source

Role of Energy‐Dependent Secondary Electron Emissions in Nonlinear Amplification of Plasma Density in Capacitive RF Discharge for Surface Processing

Plasma Processes and Polymers, Volume 23, Issue 8, August 2026.
Energy‐dependent surface reactions become increasingly important as the applied voltage increases, leading to nonlinear amplification of plasma density in capacitively coupled Ar discharges. This amplification arises from coupled ion‐ and electron‐induced secondary electron emission, forming a feedback loop between the opposing electrodes.
Ji Hyun Shin, Chang Ho Kim, Hae June Lee
wiley   +1 more source

High-Dimensional Numerical Methods for Nonlocal Models

Mathematics
Nonlocal models offer a unified framework for describing long-range spatial interactions and temporal memory effects. The review briefly outlines several representative physical problems, including anomalous diffusion, material fracture, viscoelastic ...
Yujing Jia, Dongbo Wang, Xu Guo
doaj   +1 more source