A direct extension of the Robinson high-grade silver vein system — plus a brand-new native silver intercept — deepens the case that the historic Cobalt-Gowganda district still has world-class grade ...

Abstract: In this article, we first establish an exponential stability result for a class of linear switched systems and then apply this result to show the existence of the distributed observer for a ...

Diego Luna plays an ambitious soccer enthusiast who is trying to secure the World Cup for Mexico a second time. By Ben Kenigsberg Jennifer Lopez and Brett Goldstein cause professional headaches in ...

Reality should be fairly stable... But every now and then, the universe seems to play a few tricks on us. We see things or ...