Abstract: This article presents a novel fault diagnosis method for open-circuit faults of insulated gate bipolar transistors (IGBTs) and current sensor faults in three-phase sinusoidal pulsewidth ...

Abstract: Simultaneous multiangle spaceborne synthetic aperture radar (SAR) can provide spatially diverse SAR images of the same scene without time lags. Through differential SAR interferometry ...

Undergraduate students across North America sat down on Saturday to write a grueling six-hour math exam, many of them unlikely to solve a single problem. The notoriously brutal William Lowell Putnam ...