Nonparametric density and regression estimation methods for circular data are included in
the R package NPCirc. Specifically, a circular kernel density estimation procedure is …

Fernández-Durán, JJ (2004):“Circular distributions based on nonnegative trigonometric
sums,” Biometrics, 60, 499–503, developed a family of univariate circular distributions based …

In Fernández-Durán [4], a new family of circular distributions based on nonnegative
trigonometric sums (NNTS models) is developed. Because the parameter space of this …

Abstract The Bass Forecasting Diffusion Model is one of the most used models to forecast
the sales of a new product. It is based on the idea that the probability of an initial sale is a …

A central limit theorem for the integrated squared error of the directional–linear kernel
density estimator is established. The result enables the construction and analysis of two …

A central limit theorem for the integrated squared error of the directional-linear kernel density
estimator is established. The result enables the construction and analysis of two testing …

Recent technological advances have enabled the easy collection of consumer behavior
data in real time. Typically, these data contain the time at which a consumer engages in a …

Fernández-Durán, and Gregorio-Domínguez, Seasonal Mortality for Fractional Ages in Life
Insurance. Scandinavian Actuarial Journal. A uniform distribution of deaths between integral …

Fernández-Durán [Circular distributions based on nonnegative trigonometric sums.
Biometrics. 2004; 60: 499–503] developed a new family of circular distributions based on …

In medical and epidemiological studies, the importance of detecting seasonal patterns in the
occurrence of diseases makes testing for seasonality highly relevant. There are different …