We numerically study the optimal control of an atomic Bose-Einstein condensate in an optical lattice. We present two generalizations of the gradient-based algorithm, GRAPE, in the non-linear case and ...

Omnidirectionality and simple design make VAWTs more attractive compared to HAWTs in highly turbulent and harsh operational environments including low wind speed conditions where this technology ...

Jan Culik tells the story of the Prague Spring of 1968 and the invasion by Warsaw Pact countries, which took place 50 years ago this week. History and Public Policy Program Cold War International ...