A new three-dimensional (3D) vector parabolic equation method (PEM) is proposed to study the propagation of electromagnetic waves in tunnels, which is particularly useful for modeling wave propagation ...

A California Highway Patrol officer died early Wednesday after suffering a suspected medical emergency while on duty in West Los Angeles, authorities said. Officer Miguel Cano, 35, was on patrol ...

The design and construction of a submillimetre wave phase-locked backward-wave oscillator source and its application for extending the dynamic range of a vector network analyzer are presented.