OPM Director Scott Kupor wants to bring on new feds with cutting edge skills, but the government’s recent flood of layoffs and resignations could complicate that effort. With a government shutdown ...

A new book argues that simply replacing fossil-fuel extraction with critical-mineral mining is no way out of the climate ...

Abstract: A high-order spatial filtering-symplectic finite difference time domain (SF-SFDTD) scheme with controllable stability condition is proposed to solve the time-dependent Schrödinger equation ...

Abstract: Compared with conventional dynamic nonlinear equation systems, a hybrid double-deck dynamic nonlinear equation system (H3DNES) not only has multiple layers describing more different tasks in ...