Konzeptionelle Grundlagen Klassisch-analytische Planungstheorie Konstruktivistisch-systemische Planungstheorie Organisationale Planung als Entwicklung autopoietischer Systeme in einer offenen Umwelt: Luhmanns systemtheoretische Vorschläge als "bessere" Modelle? Konzepte der Systematisierung von...

National labour market institutions interact across national boundaries when product markets are global. Labour market policies can thus entail spill-overs, which suggests that there are benefits from international policy coordination. This paper studies the effects of wage subsidies in an...

The paper generalizes Feldstein's criticism (Perceived Wealth in Bonds and Social Security, 1976) of Barro's analysis (Are Government Bonds Real Net Wealth?, 1974) for the case that the interest rate exceeds the growth rate. This is done by considering an economy in steady state where all agents...

A stochastic model for pure-jump diffusion (the compound renewal process) can be used as a zero-order approximation and as a phenomenological description of tick-by-tick price fluctuations. This leads to an exact and explicit general formula for the martingale price of a European call option. A...