Abstract: Programmable radio environments parametrized by reconfigurable intelligent surfaces (RISs) are emerging as a new wireless communications paradigm, but currently used channel models for the ...

Abstract: This article investigates the sampled-data sliding-mode control (SMC) problem for a class of uncertain systems with matched disturbances, where the sampling period switches among several ...

LONDON, Dec 11 (Reuters) - Whatever the Federal Reserve does from here - even after cutting rates on Wednesday and signaling one further cut - borrowing costs elsewhere are rising again as the global ...

Dec 11 (Reuters) - La Nina is expected to linger for another month or two before likely giving way to neutral Pacific conditions between January and March 2026, carrying a 68% probability, the U.S.