The actual global crisis seems to influence negatively the sustainable development in EU countries. At least partially the informal economy escapes from the official registered GDP and hidden migration from the official demographic statistics. This can affect in a significant way the measurement...

This paper studies the particularities of portfolio selection on the Romanian stock market using the risk-return maximization criteria introduced by Harry Markowitz (1952). We used daily prices for the 36 most liquid companies traded on Bucharest Stock Exchange during January 2010 – March 2012...

Starting from existing literature and recent years studies, several modeling schemes have been developed, which may prove useful to substantiate strategies aimed at achieving a demographic and economic balance between generations. This way, we can obtain simulations from a country or group of...

Mankind has witnessed many outstanding weather happenings which determined radical climate changes and thus, the draught is expected further to grow. Many experts, academics and scientists all over the continents have strongly called for attention about the importance of saving the water, either...

At the beginning of the transition period, the public debt in Romania was insignificant. However, during the following years, the accumulating process accelerated. Although the indebtedness degree continues to be smaller than registered levels in other European countries, more dangerous could be...