There are two intriguing questions about the transition process undertaken by the Ukraine since its declaration of sovereignty in December 1991. (i) Why had one of the more prosperous republics of the former USSR in terms of economic development and population welfare been suffering of both a...

The method proposed in this chapter is making use of the bispectrum transformation to estimate the level of integration of a fractionally integrated time series. Bispectrum ransformation transforms the series into a two dimensional frequency space, and thus has higher information content...

PROBLEM SOLVING OF FORECASTING ON SHORT PERIODS IN THE CASE OF TRANSITIONAL STRUCTURE-CHANGING CHARACTER OF DEVELOPMENT OF ECONOMICS IN THE PRESENCE OF CONSIDERABLE SEASONAL AND STOCHASTIC COMPONENTS IN TIME SERIES. MODEL OF NONLINEAR-ADDITIVE SEASONAL DEVELOPMENT WITH MULTIPLICATIVE STOCHASTIC...

We consider classes of multivariate distributions which can model skewness and are closed under orthogonal transformations. We review two classes of such distributions proposed in the literature and focus our attention on a particular, yet quite flexible, subclass of one of these classes....

Aquí se explica el funcionamiento de los enlaces con TRAMO/SEATS y X12ARIMA de Gretl. Se describe su forma de utilización y la equivalencia entre las entradas de menú de Gretl y los parámetros en línea de instrucciones de TRAMO/SEATS.

The outline of a proposed new unbalanced bidding model is discussed. Background is provided as regards the role of item price loading, otherwise known as unbalanced bidding. Three types of loading are described, namely those of ‘front-end loading’, ‘back-end loading’ and ‘quantity...

Heisenberg's principle of indeterminacy is applied to stationary time series models. The position and velocity of a forecast are defined and are shown to be imperfectly correlated. Then a first-order autoregression is used to illustrate the trade-off between precision of position and precision...

The opening of the residential UK electricity sector in 1999 motivated several studies of its impact on both the level and structure of retail charges, and on incumbents’ market power. Using regional observations on tariffs offered in January 2004, the present paper supports previous results...

The motivation behind the influence analysis is to increase the adequacy of the fitted model. Several local influence diagnostics have been proposed for different models such as linear regression, generalized linear, Weibull regression, proportional hazards etc. models by different authors on...