In a three-region New Keynesian life-cycle model calibrated to Germany, the Euro area (without Germany) and the rest of the world, we analyze the impact of population ageing on net foreign asset and current account developments. Using unsynchronized demographic trends by taking those of Germany...

The German Pension Act of 1992 raises the mandatory retirement age while the Act of 1999 adjusts pension benefits to demographic changes. To examine welfare and macroeconomic effects of these reform schemes, we have carried out a dynamic CGE study. The model used is an enlarged version of the...

Das Optionspreismodell von Black/Scholes hat sich zum Industrie-Standard für die Bewertung von Aktienoptionen entwickelt. In diesem Modell wird die Annahme einer konstanten Volatilität der Kursveränderungen getroffen. Der Befund zahlreicher empirischer Untersuchungen, dass sich Volatilität...