Abstract: The application of the existing time-domain beam-propagation method (TD-BPM) based on the finite-difference (FD) formula has been limited to the TE-mode analysis. To treat the TM mode as ...

Abstract: Dynamic calibration problem of PVDF piezoelectric film sensor, this paper puts forward a dynamic calibration method based on negative step response method, established the mechanics model of ...

Methods: Based on a large general population sample ... Results: The simplest formula gave the most accurate approximation (mean absolute difference 3.1 (2.6) kg), which was considerably better than ...

Modern geochemistry possesses not only the vigor of geology and chemistry but also the rigor of mathematics. This book presents quantitative treatments of a wide range of fundamental problems related ...