With less than 2% of new renewable energy production, Switzerland is a poor performer in international comparison. A study carried out for the Swiss Federal Office of Energy showed constraints explaining this low number. One of these is a need for companies to optimize their sales process....

Markowitz portfolio theory (1952) has induced research into the efficiency of portfolio management. This paper studies existing nonparametric efficiency measurement approaches for single period portfolio selection from a theoretical perspective and generalises currently used efficiency measures...

The dynamics of industrial growth in Jevons' The Coal Question is developed in two directions. Malthus' dynamics of the supply of subsistence and population growth is transposed into one between coal supply and economic growth. A second influence lies with the dynamic evolution of Ricardian...

The objective of operations on futures markets may be either hedging or speculation. In this paper, we wish to give a desciption of futures markets with two groups of operators with heterogeneous expectations: hedgers-speculators, and pure speculators. The existence of carry-over costs is taken...

The objective of operations on futures markets may be either hedging or speculation. In this paper, we wish to give a desciption of futures markets with two groups of operators with heterogeneous expectations: hedgers-speculators, and pure speculators.(...)