Tobias Wenzel

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The working papers published in the Series constitute work in progress circulated to stimulate discussion and critical comments. Views expressed represent exclusively the authors' own opinions and do not necessarily reflect those of the editor. Abstract This paper studies the impact of ad-avoidance behavior in media markets. We consider a situation where(More)
This paper revisits the excess entry theorem in spatial modelsà la Vickrey (1964) and Salop (1979) while relaxing the assumption of inelastic demand. Using a demand function with a constant demand elasticity, we show that the number of firms that enter a market decreases with the degree of demand elasticity. We find that the excess entry theorem does only(More)
The Virtual Interface Architecture (VIA) was introduced to define a common set of features that are suitable to build high-speed networks. Today the interface of VIA serves as access point to a wide range of system area networks. M-VIA is a software that provides the VIA interface on top of several Ethernet cards. The overhead of TCP/IP protocols is avoided(More)
This paper explores the implications of price-dependent demand in spatial models of product differentiation. We introduce consumers with a quasi-linear utility function in the framework of the Salop (1979) model. We show that the so-called excess entry theorem relies critically on the assumption of completely inelastic demand. Our model is able to produce(More)
The bright and glossy appearance of the flowers of Ranunculus repens was investigated spectroscopically and the optical results were correlated with the layered anatomy of the petal. The highly directional reflected light arises from the partially transparent, pigment-bearing epidermal layer, while a more diffused yellow colour is the result of scattering(More)
The working papers published in the Series constitute work in progress circulated to stimulate discussion and critical comments. Views expressed represent exclusively the authors' own opinions and do not necessarily reflect those of the editors. Ruhr Graduate School in Economics ECON Bibliografische Information der Deutschen Nationalbibliothek Die Deutsche(More)
The working papers published in the Series constitute work in progress circulated to stimulate discussion and critical comments. Views expressed represent exclusively the authors' own opinions and do not necessarily reflect those of the editors. Ruhr Graduate School in Economics ECON Bibliografische Information der Deutschen Nationalbibliothek Die Deutsche(More)
The working papers published in the Series constitute work in progress circulated to stimulate discussion and critical comments. Views expressed represent exclusively the authors' own opinions and do not necessarily reflect those of the editors.
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