Im grenzüberschreitenden Warenverkehr (v.a. Reiseverkehr o. Postverkehr) liegt die Aufmerksamkeit bei der Kontrolle von Tieren oder Pflanzen auf der Einfuhr von exotischen Exemplaren, die dem Washingtoner Artenschutzübereinkommen CITES (Convention on the International Trade in Endangered...

Narcotic drugs are smuggled from the Americas to Europe and many parts of the World. While opium, cannabis, hashish or other drugs are mainly coming out of Asia or Africa and are channelled and smuggled to Europe mostly on a land passage (or very short maritime routes), cocaine is mostly...

Drogenschmuggeltechniken werden von Drogenkartellen und der organisierten Kriminalität auf verschiedene Weise angewendet, um illegale Drogen über die Grenzen zu schmuggeln: mithilfe von tief fliegenden Flugzeugen, Schnellbooten, Bodypackern und auf vielen anderen Wegen. Dieser Beitrag...

We present a market model of a liberalized aviation market with independent decision makers. The model consists of a hierarchical, trilevel optimization problem where perfectly competitive budget-constrained airports decide (in the first level) on optimal runway capacity extensions and airport...

I introduce a stability notion, dynamic stability, for two-sided dynamic matching markets where (i) matching opportunities arrive over time, (ii) matching is one-to-one, and (iii) matching is irreversible. The definition addresses two conceptual issues. First, since not all agents are available...

Manipulability is a threat to the successful design of centralized matching markets. However, in many applications some manipulation is inevitable and the designer wants to compare manipulable mechanisms. We count the number of agents with an incentive to manipulate and rank mechanisms by their...

Mit Blick auf die Versorgungssicherheit im Stromsektor werden derzeit nicht nur in Deutschland verschiedene Kapazitätsmechanismen diskutiert. Dazu zählt eine Strategische Reserve, also das Vorhalten einzelner Kraftwerke, die nur in Notsituationen mit einem knappen Stromangebot und hohen...

Short-term electricity markets are key to an efficient production by generation units. We develop a two-period model to assess different bidding formats to determine for each bidding format the optimal bidding strategy of competitive generators facing price-uncertainty. We compare the results...

We study a dynamic matching environment where individuals arrive sequentially. There is a tradeoff between waiting for a thicker market, allowing for higher-quality matches, and minimizing agents' waiting costs. The optimal mechanism cumulates a stock of incongruent pairs up to a threshold and...