Abstract: The global navigation satellite system (GNSS) refraction pattern technique makes use of two pairs of GNSS receivers and antennas to collect the refracted signal in the medium and the direct ...

Abstract: Low-cost air quality monitoring devices can provide high-density spatiotemporal pollution data, thus offering a better opportunity to apply machine learning (ML). Low-cost sensor nodes ...

A better night’s sleep starts at home, and these highly rated products, from blackout curtains to diffusers, may help set the ...