This study contrasts the (apparent) random walk behaviour of the real exchange rate to chaotic dynamics, using (US) dollar-based real exchange rates for 17 OECD countries (covering the period 1957:1-1995:4). Tests for deterministic noisy chaos are carried out using the Nychka, Ellner, Gallant...

We test the validity of the Purchasing Power Parity theory, examining the Real Exchange Rate of 23 OECD countries for mean-reversion. In doing so, we estimate the Hurst exponent, which is a well-established estimator of long memory in time series analysis. The innovation of our approach is that...

This paper investigates cost, technical and allocative efficiencies for Brazilian banks in the recent period (2000-2007). We use Data Envelopment Analysis (DEA) to compute efficiency scores. Brazilian banks were found to have low levels of economic (cost) efficiency compared to banks in Europe...

This paper analyzes the efficiency of the Brazilian banking sector over the post-privatization period of 2000-2007. We employ a Bayesian stochastic frontier approach, which provides exact efficiency estimates and confidence intervals and thus, allows an accurate comparison across institutions...