Dimitrios Diamantaras

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on earlier versions and related work, and Pieter Ruys for many fruitful discussions. Abstract We extend the results of Mas-Colell (1980) and Weber and Wiesmeth (1991) on valuation equilibria and the relationship of cost share equilibria with the core. We allow for any finite number of private goods and a set of public projects without any structure. We show(More)
for computational support and its director, Robert P. Strauss, for general discussions. We thank Clara Asnes for help with the figures. Comments and suggestions made by Masa Fujita, Tony Smith, and Jacques Thisse in the Regional Science Theory Workshop at the University of Pennsylvania were invaluable. Conversations with Jim Peck were quite helpful as well.(More)
Recent research in industrial organisation has investigated the essential place that middlemen have in the networks that make up our global economy. In this paper we attempt to understand how such middlemen compete with each other through a game theoretic analysis using novel techniques from decision-making under ambiguity. We model a purposely abstract and(More)
AbstrAct Social networks depict complex systems as graph theoretic models. The study of the formation of such systems (or networks) and the subsequent analysis of the network structures are of great interest. For information systems research and its impact on business practice, the ability to model and simulate a system of individuals interacting to achieve(More)
In this paper we argue that ambiguity, combined with social opinion formation, can be used as the foundation of a game-theoretic equilibrium concept that transcends the standard Nash equilibrium concept, applied to a model of the tragedy of the commons. Our approach sheds light on the international environmental crisis and the relevant ongoing international(More)
OBJECTIVE To evaluate the efficacy and safety of celecoxib for pain management in post-tonsillectomy adult patients. DESIGN A randomised, double-blind, placebo-controlled, phase 3 clinical trial was conducted in an adult population (aged 18-55 years), with a parallel group design using an allocation ratio of 1:1. METHODS Eighty patients underwent(More)