Europe’s power system is still marked by a distinct national component, and despite some regions with strongly integrated power systems, electricity supply today still has a largely national basis. Policies to decarbonise ...

I derive the polar representation of Fieller's estimation of confidence sets for ratios and construct a polar plot of the test statistics for all angles associated with the ratios. This procedure helps in visualizing and ...

We model the symbiotic relationship between criminals and a part- nership of protection providers - the Firm. In the absence of state au- thority, insecurity and crime generate a demand for protection. When the protection ...