We find that generalized purchasing power parity does not hold for Mercosur, and thus that the South American trade group does not constitute an optimum currency area. We also find that the role of the United States cannot be neglected in the region, and that high short run volatility of real...

Applied econometricians tend to show a long neglect for the proper frequency to be considered while sampling the time series data. The present study shows how spectral analysis can be usefully employed to fix this problem. The case is illustrated with ultra-high-frequency data and daily prices...

We carry out a statistical physics analysis of the flash crash of May 6, 2010 using data from the Dow Jones Industrial Average index sampled at a one-minute frequency from September 1, 2009 to May 31, 2010. We evaluate the hypothesis of a non-Gaussian Levy-stable distribution to model the data...

We evaluate whether the presence of China in world trade is ultimately beneficial or whether it is a threat to Brazil. Using a gravitational model and a panel data method, we find that the Chinese exports to countries other than Brazil are not hurting the Brazilian exports, although the exports...

We conducted a questionnaire study with student subjects to look for explicit correlations between selected biological characteristics of the subjects and manifestation of the Allais paradox in the pattern of their choices between sets of two pairs of risky prospects. We found that particular...

Although the economic literature on the optimal management of bank excess reserves is age-old and large, here we suggest a fresh, more practical approach based on queuing theory.

We employ the Levy sections theorem in the analysis of selected dollar exchange rate time series. The theorem is an extension of the classical central limit theorem and offers an alternative to the most usual analysis of the sum variable. We find that the presence of fat tails can be related to...

We make a case for the usefulness of an optimal control approach for the central banks’ choice of interest rates in inflation target regimes. We illustrate with data from selected developed and emerging countries with longest experience of inflation targeting.

Neste texto fazemos um apanhado inicial e geral das principais id¥eias relacionadas a teoria dos sistemas complexos.

We examine the relationship between the US current account deficit, the international value of the dollar, and the dollar reserves of foreign central banks. We find that the international value of the dollar impacts the US current account and also that dollar depreciations are accompanied by...