Accuracy of the normal approximation for Speckman's kernel smoothing estimator of the parametric component [beta] in the semiparametric regression model y=x[tau][beta]+g(t)+e is studied when the bandwidth used in the estimator is selected by a general data-based method which includes such...

By establishing the asymptotic normality for the kernel smoothing estimator[beta]nof the parametric components[beta]in the partial linear modelY=X'[beta]+g(T)+[var epsilon], P. Speckman (1988,J. Roy. Statist. Soc. Ser. B50, 413-456) proved that the usual parametric raten-1/2is attainable under...

Energy efficiency is an important factor in developing energy policies as it represents the extent to which resources support economic output. In recent literature, relevant studies have mainly focused on aggregate energy efficiency, but rarely touched on the marginal efficiency of diverse...