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With more than a decade of experience, Nelson covers Apple and Google and writes about iPhone and Android features, privacy and security settings, and more. You're driving, you need directions, and ...

Abstract: This article proposes a PRT shaping algorithm, which is used in conjunction with a 2.4-GHz phase- and quadrature self-injection-locked (PQSIL) radar for noncontact heart rate variability ...

Abstract: Biological signals are most often one of the most important carriers of information about human health. It should be noted that the value of the signal amplitude is so small that it is ...

Victor Davis Hanson, a senior contributor for The Daily Signal, is a classicist and historian at the Hoover Institution at Stanford University and host of "The Victor Davis Hanson Show." His website, ...