American Institute of Physics

Resolving magnetometer vector light shift — and turning it into a tool

Important instruments for neuroscience and medical diagnostics, optically pumped magnetometers measure responses of polarized atoms to produce information about the low-frequency external field. They ...

Arctic sea ice melt slowdown since 2012 linked to atmospheric pattern shift

A research team led by The Hong Kong University of Science and Technology (HKUST) scholars has discovered a significant ...

West Antarctica's history of rapid melting foretells sudden shifts in continent's 'catastrophic' geology

Due to its thick, vast ice sheet, Antarctica appears to be a single, continuous landmass centered over the South Pole and ...

The Doomsday Glacier Is Getting Closer and Closer to Irreversible Collapse

An analysis of the expansion of cracks in the Thwaites Glacier over the past 20 years suggests that a total collapse could be ...
IEEE

Neural Networks for Phase Shift Optimization of Reconfigurable Intelligent Surfaces Under Imperfect Channel State Information

Abstract: Reconfigurable intelligent surface (RIS) is a key enabling technology for the sixth generation (6G) of mobile networks. It can focus the signal at an intended location (e.g., a user hotspot) ...
IEEE

An Efficient Solution to Phase-Shift Optimization for RIS Enabled Joint Communication and Sensing

Abstract: In reconfigurable intelligent surface (RIS) enabled joint communication and sensing (JCAS) systems, conventional phase-shift optimizations mostly suffer from high computational complexity in ...