Following Elliott (1999) and Perron and Rodríguez (2003), we develop unit root tests in the context of structural change models using GLS detrended data (Elliott, Rothenberg and Stock, 1996) when the initial observation is drawn from its unconditional distribution. We derive the limiting...

This paper uses six time series models to forecast seasonally unadjusted monthly data of Canadian enplaned/deplaned air passengers, for the domestic, transborder and international sectors. We find that forecasting performance of the models varies widely across series and forecast horizons. Our...

Patent citations are extensively used as a measure of patent quality. How­ever, counting citations does not account for the fast that citations corne from patents of different qualities, and that some citations are of a higher quality than other citations. We propose and develop a citation...

Following Doménech and Gómez (2006), and using quarterly Peruvian data for 1970:1-2007:4, I estimate a model that exploits the information contained in the inflation, unemployment and private investment rates in order to estimate non-observable variables as output gap, the NAIRU and the core...

We established, via finite sample simulations, that additive outliers have important effects on the exact size of the statistic for testing for Granger causality. An empirical application illustrates the effects of neglecting for additive outliers.

Following the approach suggested by Engel and Kim (1999), we estimate the permanent and transitory components of the real exchange rates in four Latin-American countries for the period 1957:01 to 2002:04. Results suggest that transitory component is the driving force of the real exchange rates...

There has been a substantial amount of convergence between post-Keynesian and Marxist economics, the writings of Kalecki being common ground for both traditions. Still, some differences remain. While authors in both traditions seem to agree to a large extent on short-period issues, long-period...