The paper revives a theoretical definition of party coherence as being composed of two basic elements, cohesion and factionalism, to propose and apply a novel empirical measure based on spin physics. The simultaneous analysis of both components using a single measurement concept is applied to...

The raise of material efficiency is of special importance in the provision of solutions for a more sustainable path of development. One of the main approaches in this direction is the resource saving closure of material circulations among industrial actors. This means at least: maximum rate of...

The lack of a liquid market for implied correlations requires traders to estimate correlation matrices for pricing multi-asset equity options from historical data. To quantify the precision of these correlation estimates, we devise a block bootstrap procedure. The resulting bootstrap...