Using some special models, this study tries to quantify the size of underground economy in Romania. The exposition plan includes: 1) Models based on direct approaches; 2) Models based on indirect approaches; 3) A generalised model for the allocation of time; 4) A model based on May’s logistic;...

This paper deals with the problem of periodisation of Romania’s economic history during the 1860-2010 period. In order to achieve the objective, several methods are used. A first method is the identification of decennial economic cycles. The second method is to emphasize the impact of economic...

In this paper it is adopted the assumption that the analysis of the features of the sectoral structure of a country’s economy shall have in view not only the sectoral distribution of value-added, but also the sectoral ratios of the effective production to the value added, and the sectoral...

Having in view some algebraical properties of the Student Test statistics, in this paper a new indicator is proposed in order to evaluate the quality of estimation in case of a linear regression with three explanatory variables, when OLS method is used. The respective indicator, named Synthesis...

The purpose of this paper is to reveal the correlation between the gross capital formation and the gross domestic product in countries of the European Union in 2007, during the period 1999-2006. The evaluation is made both on demand side and on supply side. On the demand side we take into...

Using some special models, this study tries to quantify the size of underground economy in Romania. The exposition plan includes: 1) Models based on direct approaches; 2) Models based on indirect approaches; 3) A generalised model for the allocation of time; 4) A model based on May’s logistic;...