The nexus between inflation and its uncertainty has been a topic of wide dispute. Using wavelet decomposition and with special reference to Egypt for the period 1960-2013, we find that the focal relationship varies substantially among the different frequencies involved. In the short-run,...

To effectively assess the link between exchange rate uncertainty and exports performance in Egypt, this article relies on an optimal GARCH model among decomposed series on a scale-by-scale basis via wavelet approach. The observed outcomes reveal that the focal connection depends substantially on...

The identification of the out of control variable, or variables, after a multivariate control chart signals, is an appealing subject for many researchers in the last years. In this paper we propose a new method for approaching this problem based on principal components analysis. Theoretical...