According to a widely held belief, all who are able to work, should workʺ. We consider this statement within a framework of non-linear taxation. The crucial difference between our model and the standard model is that the government can distinguish between productive persons and the disabled. A...

Durch die Modellierung der Sicherheit betrieblicher Informationssysteme kann die Komplexität des Sicherheitsproblems in einer Organisation und ihren Geschäftsprozessen reduziert werden. Das Erkennen von Sicherheitsanforderungen sowie optimaler Handlungsalternativen in Form geeigneter...

This article examines the question whether a point and figure (P&F)-based investment strategy yields statistical significant excess returns compared to a buy-and-hold (B&H)-strategy. The simulations show that P&F slightly outperforms B&H with respect to returns as well as with respect to the...

This paper investigates the effects of monopolistic competition on entrepreneurial risk-taking in a general equilibrium model. In this context, occupational choice of risk averse agents is biased towards firm ownership. In this case, the inefficiencies due to the presence of non-diversifiable...

This paper discusses a twosector neoclassical overlapping generations economy with intermediate and final goods in the spirit of Romer (1990). The risk averse agents engage in one of two alternative occupations: either firm-ownership in the intermediate goods sector, characterized by...