Most laser sources produce Gaussian beams that diverge as they propagate. This natural spreading limits their effectiveness in applications that require light to remain concentrated over long ...

Breaking free from nicotine isn’t easy, but with the right plan and support, you can take back control and breathe easier. Pictures of twins show how smoking dramatically speeds up wrinkles and aging.

Abstract: We propose and analyse a symmetric weighted interior penalty method to approximate in a discontinuous Galerkin framework advection–diffusion equations with anisotropic and discontinuous ...

Abstract: Based on the finite difference time domain (FDTD) method and the three-stage split-step precise integration time domain (SS2-PITD) method, a hybrid subgridding method is proposed for solving ...