The processing of data is often restricted by contractualand legal requirements for protecting privacy and IPRs. Policies pro-vide means to control how and by whom data is processed. Conditionsof policies may depend on the previous processing of the data. However,existing policy languages do not...

We study the role of whistleblowing in the following inspectiongame. Two agents who compete for a prize can either behave legallyor illegally. After the competition, a controller investigates the agents’behavior. This inspection game has a unique Bayesian equilibriumin mixed strategies. We...

Seth Godin geht in seinem neuesten Buch wieder auf die Möglichkeiten der Mundwerbung im Internet ein. Seine These lautet, dass allein aus Gründen der Kosteneffizienz zukünftig immer weniger Massenbotschaften an potenzielle Kunden gesendet werden. Vielmehr bestehe die Aufgabe des Marketing...

Despite the empirical relevance of advertising strategies in concentrated markets,the economics literature is largely silent on the effect of persuasive advertisingstrategies on pricing, market structure and increasing (or decreasing) dominance.In a simple model of persuasive advertising and...

Um der vergleichsweise geringen bzw. abnehmenden Werbewirkung klassischerWerbebanner und Pop-Ups zu begegnen, hat die Werbebranche eine Reihe neuerWerbemittel für das WWW entwickelt. Ein Beispiel für ein solches neueres Werbeformatsind die so genannten Layer-Ads, welche in der Praxis zunehmend...

Television has changed our use of time far more than any other technological development (Robinson 1990). For many, watching television has become the main leisure experience. By the late 1990’s in Britain, (one of the two countries where we undertook empirical work) people aged 4 and over...

CII Introduction: The UK insurance sector lies at a critical juncture in its long and eventful history. On the one hand, insurers are feeling the recessionary pinch in the form of a capital squeeze and a hardening market, but they can still benefit from escaping the contagion in the global...

This paper examines the economic organization of the trans-Saharan slave trade between the fourteenth and the nineteenth centuries on those routes that moved slaves from Sudanic Africa via entrepôts in the Sahel and Sahara to the Maghrib. The commercial framework of this trade was integrated...