Die Wiederverwendung oder stoffliche Verwertung von Altprodukten, Verpackungen und Abfallstoffen ist oft nur dann sinnvoll, wenn diese in möglichst homogenen Objektsorten bzw. Materialfraktionen vorliegen. Dies erfordert entweder eine sortenreine Kollektion der Objekte schon durch die...

We present a model of a multi-species fishery and show that (i) consumer preferences for seafood diversity may trigger a sequential collapse of fish stocks under open-access fishery, (ii) the stronger the preferences are for diversity the higher is the need for coordinated multi-species...

We examine how competition in international markets affects a union's choice of wage regime which can be either uniform or discriminatory. Firms are heterogenous with regard to international competition. When unions choose their wage regimes sequentially, a discriminatory outcome becomes more...

This paper introduces the computable partial equilibrium energy model 'Global Resource Extraction and Energy Transformation' (GREET), its structure, assumptions and the outcomes of two exemplary scenarios. GREET is characterized by a comprehensive modelling of constraints on the diffusion of...

We analyze the influence of the fiscal position on the transmission of government spending shocks in a New Keynesian model. We find that once we allow for positive levels of government debt in the steady state, the sign and the size of the fiscal multiplier depend strongly on the horizon at...

This paper introduces an alternative to the lobbying literature's standard assumption that money buys policies. Our model - in which influence-seeking requires both money to buy access and managerial time to utilize access - offers three significant benefits. First, it counters criticism that...

How does international tax competition affect fiscal democracy? To what extent does it constrain the autonomy of democratic governments in choosing the level and structure of national taxation? While tax competition has not reduced the level of total taxation in OECD-22 countries, it has revenue...

The recent global financial crisis has increased interest in macroeconomic models that incorporate financial linkages. Here, we compare the simulation properties of five mediumsized general equilibrium models used in Eurosystem central banks which incorporate such linkages. The financial...