Based on the four major types of economic cycles (Kondratieff, Juglar, Kitchin, Kuznet), the paper aims to determine their actual length (for the U.S. economy) using cyclic regressions based on Fourier analysis.

In this paper, we have investigated the dependence of investment demand based on GDP and the real interest rate in Romania during 2001-2011. After determining the regression equation, an apparently surprising conclusion is that if an increase of 1% of GDP leads to an increase in investment of...

The article deals with a production function of three factors with constant scale return where each elasticity of two of the factors is a function of first degree. After the examination of parameters conditions according to the axioms of the production functions, there are computed the main...

In this paper, we have investigated the dependence of taxes based on GDP in Romania during 2001-2011. After determining the regression equation, an apparently surprising conclusion is that there is a weak dependence of tax revenues to the GDP.

The Electre method aims as objective the choosing of the best variant in the conditions of existence of some decision criteria. An interesting problem arises when different variants associated to the values ??are not constant but are in intervals. The paper treats how to determine the optimal...

In the game theory, there are a classic series of four criteria: Wald, Hurwicz, Savage, Laplace with a special importance in the choice of optimal decision in the situations of uncertainty. These criteria providing reasonable answers from different points of view. The question is to discern...

The Electre method aims as objective the choosing of the best variant in the conditions of existence of some decision criteria. A subjective factor in the method consists in choosing the coefficients of importance. This paper proposes an objective method of determining the coefficients of...

One of the hottest topics of economic research, not only is the economic crisis facing the world economy since 2007. Once the economic shock has spread quickly has spread quickly since the third quarter of 2008, international macroeconomic context known negative changes. The illusion that we...

This paper treats the consumer's budget problem for arbitrary n goods. The analysis is based mainly on the comparison of volumes of Rn budget zones that allow for interesting conclusions on the effect of fees and taxes in relation to purchasing power.