The aim of this study is to suggest a more practical method for explaining market equilibrium in a two-dimensional risk-return world. Its main difference from textbook contents is to define, in both qualitative and quantitative ways, the environment or the system factor and treat it as an...

In recent years traditional inequality measures have been used to quite a considerable extent to examine the international distribution of environmental indicators. One of the main characteristics of these measures is that each one assigns different weights to the changes that occur in the...