A novel photonic approach to generating a frequency-quadrupled millimeter-wave (mm-wave) signal with a tunable phase shift is proposed and demonstrated.Two second-order optical sidebands are generated by using a Mach-Zehnder modulator (MZM) that is biased at the maximum transmission point and an optical notch filter.A polarization-maintaining fiber

Objectives This study aims to understand the breadth of practice around end-of-life withdrawal of non-invasive advanced respiratory support (encompassing both continuous positive airway pressure and non-invasive ventilation) by analysing NHS-published guidelines and guidance for clinicians.This study seeks validity in the guidelines through a confl

Periodic dean michael amott frequent patterns are frequent patterns which occur at periodic intervals in databases.They are useful in decision making where event occurrence intervals are vital.Traditional algorithms for discovering periodic frequent patterns, however, often report a large number of such patterns, most of which are often redundant a

To the biab spirited Editor: I have followed, with great interest, the passionate debate held between Lichtman, and Ashkenazi and Olsha in Rambam Maimonides Medical Journal.Lichtman put forward a curious and enlightening proposal to offer a fractional value to each author, depending on the value of their relative contribution, with the total amount

Abstract Background Nutrition and predation have been considered two primary agents of selection important in the evolution of avian life history traits.The relative importance of these natural selective forces in the evolution of avian embryonic developmental period (EDP) remain poorly resolved, perhaps in part because research has tended to focus