Research on productive efficiency at the firm level has developed as an important and active strand of research the last decades, both within operations research, management science and economics. However, the interests pursued within the fields have had some differences regarding sound...

The modelling of the interaction between production activities and the natural environment requires formulating a multioutput production function for intended and unintended outputs. The key feature when modelling joint production of intended outputs and unintended residuals is that the latter...

The generation of unintended residuals in the production of intended outputs is the key factor behind our serious problems with pollution. The way this joint production is modelled is therefore of crucial importance for our understanding and empirical efforts to change economic activities in...

The study concentrates on the comparison of hedge fund efficiency measured by maximum drawdown measures with traditional risk/return ratios. The examined period is from 1990 to 2011 and the data were provided by Hedge Fund Research. It is a continuation of the research done for a shorter period,...