In this paper an evolutionary simulation model, based on replicator dynamics, is developed. The purpose is to identify changes in the patterns of evolution of the market structure caused by Information and Communication Technologies (ICT) in the E-conomy in comparison to the Old Economy (without...

In this paper we present three simple theoretical models to explain the influence of the possibility to make non-binding announcements on future investment behaviour in public good settings. Our models build on the idea that voluntary contributions to the supply of a public good might be...

This paper analyses a RBC model in continuous time featuring deterministic incremental development of technology and stochastic fundamental inventions arriving according to a Poisson process. Other than in standard RBC models, shocks are uncorrelated, irregular and rather seldom. In two special...

In this paper we study the impact of more transparency in the interbank market on the volume of bank intermediated loans and on the profitability of the banking business. Transparency is modeled by means of the informational content of publicly observable signals correlated to the random...

Korruption ist ein globales Phänomen, das vor allem für viele Entwicklungsländer als Wachstumsbremse wirkt. Der Beitrag zeigt, wie man mittels eines einfachen industrieökonomischen Modells die Wirkungsmechanismen der Korruption analysieren kann. Korruption hält Unternehmen vom Markteintritt...

The competitive allocation of labor across different sectors of an economy may not be socially optimal when one sector uses foreign capital. We argue that a suitably designed government intervention is required to restrict the sectors to their optimal size and maximize national welfare. Such a...

International and national investors are often exposed to real wealth risks, stemming from volatile asset prices and inflation uncertainty, making it difficult to stabilize consumption patterns. However, investors can enter futures markets to hedge against these risks. The paper develops a...

Until recently "deceleration" has been little recognized as a technical term, or as an idea. However, it seems to be getting more attention now. For example the German magazine STERN dedicated a cover story to deceleration, in the Anglo-American world the "Quiet Life Hypothesis" is gaining...

The present paper is concerned with the optimal control of stochastic differential equations, where uncertainty stems from one or more independent Poisson processes. Optimal behavior in such a setup (e.g., optimal consumption) is usually determined by employing the Hamilton-Jacobi-Bellman...

Rare and randomly occurring events are important features of the economic world. In continuous time they can easily be modeled by Poisson processes. Analyzing optimal behavior in such a setup requires the appropriate version of the change of variables formula and the Hamilton-Jacobi-Bellman...