A necessary and sufficient condition is given for a weakly stationary random field (indexed by the integer lattice of an arbitrary finite dimension) to have a spectral density which is bounded between ...

This is a preview. Log in through your library . Abstract The single-particle spectral function measures the density of electronic states in a material as a function of both momentum and energy, ...

Abstract: In this joint work with Jeffrey Geronimo and Chung Wong we study the asymptotics of the Fourier coefficients of 1/|p|^2, where p is a two variable polynomial without roots in the closed ...

To examine the baroreceptor reflex function, a beat-to-beat analysis between systolic blood pressure (SBP) and R-R interval fluctuations was studied in 10 stable appropriate-for-gestational age ...

A set of functions are presented for Octave/MATLAB that allow easy, consistent, and properly scaled DFT/FFT analysis of signals and noise. The techniques and functions presented are easily translated ...