Der Verlust an Biodiversität gilt als eines der zentralen Umweltprobleme. Um die Bedeutung der Biodiversität aufzuzeigen, wird heute in Wissenschaft und Praxis meist der Wert einzelner Arten oder Ökosysteme bestimmt. Die zugrundeliegende Überlegung ist, dass eine Art oder ein Ökosystem...

Loss of biodiversity is regarded as one of the key problems affecting the environment. In order to demonstrate the significance of biodiversity, the value of individual species or ecosystems today is generally determined in science and practice. The underlying thought is that a species or...

Many performance measures, such as the classic Sharpe ratio have difficulty in evaluating the performance of mutual funds with skewed return distributions. Common causes for skewness are the use of options in the portfolio or superior market timing skills of the portfolio manager. In this...

Data Envelopment Analysis (DEA) is a linear programming based method for evaluating performance of comparable production units such as firms. Although the method is already extensively applied in many areas of economics, its use in environmental economics and related fields remains limited. The...

The Commitment to Development Index of the Center for Global Development rates 21 rich countries on the “development-friendliness” of their policies. It is revised and updated annually. In the 2004 edition, the component on foreign assistance combines quantitative and qualitative measures of...