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...

Market economy is characterized at a time, among others, by the existence of twopartners, so that one has some money, a certain amount of capital, and one needs money. The first has money and wants to capitalize on them as possible, and the second wants to enter into possession of a capital base...

From the multitude of variations of capital investment on the capital market, this work cuts two of them namely capital investments in options contracts and capital investments in straddle contracts. A distinct place it occupies in the paper presentation of the operating mechanisms of the two...

Romanian Abstract: Lucrarea de faţă abordează tematica arbitrajului preţurilor dezvoltată de către Stephen A. Ross (1976), care porneşte de la premiza că valorile mobiliare subevaluate pot fi revândute pe o altă piaţă în ideea de a profita în urma diferenţei de preţ, această...

This study refers to the methodological framework for performing the cost-benefit analysis, at the level of a river basin, for the program of measures needed to achieve the good environmental condition of water bodies within the framework of Water Framework Directive (WFD). The Cost-Benefit...

In the paper, considerations on the destruction process of the stratospheric ozone by substances emitted by anthropogenic pollution sources and which reach in the stratosphere by transport from the troposphere are presented. In the stratosphere, the lifetime of these substances is less than in...

In the Eulerian approach the behavior of the atmospheric pollutants is described relative to a fixed coordinate system. Thus the pollutant concentration is a function depending on the system coordinates and must satisfy the material balance taken over a volume element. Expressed mathematically,...

The present study wishes to bring to the attention of the reader the alarming impact that the common benzene molecule has on the environment, with unimaginable implications on the human being. Although it has a great economic importance, being used in many industries, specialists are underlining...