Confrontations of one sort or another are inevitable this year but you must never back down. Your opponents will be as eager ...

.S. President Donald Trump on Wednesday withdrew a threat to impose tariffs on a number of nations for their stance on ...

This week's stories show how fast attackers change their tricks, how small mistakes turn into big risks, and how the same old ...

Abstract: The transverse linearly polarized beam can maintain its polarization when reflected, which is important for a detection system. Most of the existing planar Bessel beam generators are ...