A New Algorithm Beats Dijkstra's Time For The Shortest Path To Any Point In A Network

Dijkstra's algorithm has long been the quickest way of finding the shortest possible paths in a network, but researchers have ...
IEEE

Physics-Informed Neural Networks With Fourier Features for Seismic Wavefield Simulation in Time-Domain Nonsmooth Complex Media

Abstract: Physics-informed neural networks (PINNs) have great potential for flexibility and effectiveness in forward modeling and inversion of seismic waves. However, coordinate-based neural networks ...
IEEE

High-Efficiency Viscoacoustic Least-Squares Reverse Time Migration With Q-Compensated Gradient Using Nearly Constant Q Model

Abstract: The attenuation characteristics of subsurface media cause amplitude attenuation and phase dispersion in seismic waves. Ignoring these effects in conventional least-squares reverse time ...
Physics World

Physicists apply quantum squeezing to a nanoparticle for the first time

Trapped and squeezed: A single nanoparticle made of glass (a white point near the centre of the photo) is confined in an optical potential created with a focused laser beam. By detecting the light ...