With the draw for the league phase of the 2025/26 UEFA Champions League taking place on Thursday, Barcelona learned their eight opponents for the first round of the competition. And, as fate would ...

Abstract: This article derives necessary and sufficient conditions for robust stability of a feedback interconnection of linear time-invariant (LTI) systems that exhibit positive realness on finite ...

On the hills above Cornol in the canton of Jura, scientists are testing unusual new defences in the fight against the invasive Asian hornet (Vespa velutina): electric harps and hive “muzzles.” The ...