A consistent estimator for the spectral density of a stationary random process can be obtained by smoothing the periodograms across frequency. An important component of smoothing is the choice of the ...

The penalized likelihood approach is not well developed in time series analysis, even though it has been applied successfully in a number of nonparametric function estimation problems. Chow and ...

Penile erection is a sophisticated physiologic response that depends on the complex integration of various mechanisms—including local hemodynamic regulation, endocrine secretion and neurological ...