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...

The relationship between stock market development and domestic product are tested for Portugal in a fast economic transformation period (1993-2010). Dynamics are analyzed using a VAR model through Granger causality tests, variance decomposition and impulse-response function. Results show that...

We analyze the effect of two 2012's regulatory measures in the Brazilian telecommunications and electricity markets. The first intervention was undertaken by the telecommunications regulatory agency (Anatel) in 18th of July and refers to the interruption of the sales of important...

In 2011, the Brazilian government granted an income tax benefit to corporate bonds issued with the specific purpose of financing long-term infrastructure investments (Law 12.431/2011). The financial bonds favored by this policy have become known as "incentivized bonds". This paper describes the...

O artigo analisa a noção de capital fictício em Marx a partir das idéias de autonomia dos valores relativamente aos preços e de autonomia da circulação relativamente à produção. Explora, nesta análise, o debate sobre a forma valor entre marxistas, e a noção de capital financeiro,...

Muitos trabalhos recentes têm-se debruçado sobre a presença de dinâmicas de memória longa nos preços das acções devido às implicações controversas de tal constatação para a eficiência do mercado e, portanto, para os modelos martingale dos preços dos activos utilizados na economia...