Stefan Seifert Livres

The international conference „Group Decision and Negotiation (GDN) 2006“ aims at bringing together researchers in the areas of Group Decisions, Negotiations, and Negotiation Support Systems. Participants share a common research focus on complex decision problems, which involve multiple stakeholders as well as the different information sets. The interdisciplinary research does not only seek to improve our understanding of group decision, negotiations, and market processes, but also to support decision makers, negotiators, and market engineers in achieving better outcomes.

New information technologies allow for the design of innovative electronic markets which can improve the efficiency of trading. In this context, several internet marketplaces have recently extended the flexibility of their selling mechanisms by creating hybrid institutions which combine an auction with a fixed price offer so that buyers can choose to bid in the auction or to acquire the item for the fixed price. Applying a Market Engineering approach, this book introduces a model of an auction with a posted price offer and investigates the characteristics of such mechanisms. It discusses the respective equilibrium strategies of both the sellers and the bidders which provide useful insights into understanding actual behavior. The theoretical results are compared with strategies of students in a controlled experiment. The experimental observations indicate shortcomings of standard economic theories and help to further improve electronic markets.

Was ist ein Ghul? Ein Dämon, etwas Schreckliches? Oder verkörpert er nur die dunkle Seite unseres eigenen Wesens? Meist bleibt er im Verborgenen, aber manchmal tritt er aus dem Schatten heraus und versucht, von uns Besitz zu ergreifen. Dabei verschwimmen die Grenzen zwischen Wirklichkeit und Phantastik, zwischen Wahnsinn und Normalität. Aber welche Rolle spielt der Mond? Und leben Blinde in einer besseren Welt?