This paper studies the applicability of time series models as a decision tool of buy and sell orders of live cattle futures contracts in the Brazilian Futures Market (BM&F), on dates close to expiration. The models considered are: ARIMA, Neural Networks and Dynamic Linear Models - DLM (this in...

A teacher needs, as an economic analyst, to use indicators that give her accurate information about the classes. This work aims at testing the hypothesis: “The perceptions of the students about the subjects and about the teacher vary according to the specificity of each class”. For this...

Um elemento que comportou consideráveis avanços na Economia do Século XX foi o reconhecimento de que a informação não era perfeita nos diversos mercados. Este trabalho sintetiza a relevância da Economia da Informação, debruçando-se sobre os dois principais campos de influência: o...

This study aims to verify the effect of the download data transmission rate on the degree of satisfaction of consumers of fixed broadband internet access, evaluating whether this relationship is adequately explained by the three characteristics which, according to prospect theory (Kahneman e...

This is a brief reflection on complex work systems automation, studying the Air Traffic Control Services. We study the compatibility of air traffic control systems automation against the necessary preservation of human nature complexity and the social integration of individuals, through a...

This study aims to verify the effect of the download data transmission rate on the degree of satisfaction of consumers of fixed broadband internet access, evaluating whether this relationship is adequately explained by the three characteristics which, according to prospect theory (Kahneman e...

This article analyses the behaviour of the brazilian exchange rate (Real/US dollar) and the corresponding values forecasted by the market agents, from 2001 (november) to 2004 (may). We use the data-base of the Brazilian Central Bank, called “Sistema de Expectativas de Mercado”, which has...

This paper investigates the effect of monetary and exchange rate shocks on disaggregated prices of the Brazilian Consumer Price Index (IPCA), from 1999 to 2011. We analyze the results of a factor-augmented vector autoregressive model (Favar), which are presented by different levels of...

This paper analyzes the macroeconomic impacts derived from the recognition of previously unreported fiscal liabilities during 2015 in Brazil. This is done within a DSGE model with a detailed public sector developed and calibrated for the Brazilian economy. The gradual recognition of these fiscal...

This article discusses which may be the trajectory of the Brazilian economy over the 2020s, particularly in the transition from the current period when there is idle capacity in the economy to a period when the growth of supply capacity may again be crucial for growth. From the context created...