Torben Stühmeier

Torben Stühmeier
University of Münster | WWU · Center for Applied Research in Economics Münster (CAWM)

Dr.

About

17
Publications
2,147
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233
Citations
Introduction
Additional affiliations
September 2009 - February 2013
Heinrich-Heine-Universität Düsseldorf
Position
  • Research Associate

Publications

Publications (17)
Article
Die Produktivität wächst in vielen Industriestaaten mit abnehmender Rate. Gleichzeitig entwickelt sich die Produktivität zwischen einzelnen Unternehmen auch in eng begrenzten Wirtschaftsbereichen unterschiedlich. Gibt es zwischen diesen beiden Entwicklungen Zusammenhänge? Es zeigt sich, dass insbesondere die Akkumulation von Wissenskapital durch Fo...
Article
Wirtschaftsleistung und Produktivität sind in Deutschland regional sehr unterschiedlich verteilt. Insgesamt ist das Effi zienzniveau in Ballungszentren höher als in ländlichen Gebieten. Das gilt für Ostdeutschland wie für Westdeutschland. Ostdeutschland ist aber deutlich stärker ländlich geprägt als Westdeutschland. Dies ist ein wesentlicher Grund...
Article
We study the relationship between market concentration and market variety, and thereby focus on two dimensions of variety, namely on internal variety and on external variety. In our setup, firms can expand their internal variety continuously around their focus point on a Salop-circle. External variety then refers to the market supply of variety off...
Article
Full-text available
Competition authorities have a growing interest in assessing the effects of partial ownership arrangements. We show that the effects of such agreements on competition and welfare depend on the intensity of competition in the market and on the firms’ governance structure. When assessing the effects of partial ownership, competition policy has to con...
Article
This survey discusses the merits of public intervention in broadcasting markets. By means of a theoretical model, we derive cases of market imperfection in a two-sided market setup and survey the literature. We show that there is often no clear free-market bias in (for example) advertising levels, program quality, or channel diversity with respect...
Article
Full-text available
Search frictions are regarded as a major impediment to active competition in many markets. In some markets, such as financial and retail gasoline, governments and consumer protection agencies call for compulsory price reporting. Consumers could then more easily compare the firms’ offers. We show that for a given level of price comparison, mandatory...
Article
This model discusses mobile network operators' (MNOs) incentives to invest in their network facilities such as new 4G networks under various regimes of data roaming charge regulation. Given an induced externality of investments (spillovers) due to the roaming agreements it will be shown that MNOs, competing on investments, widely set higher investm...
Article
Full-text available
Für kleine und mittlere Unternehmen spielt Flexibilität eine zunehmend wichtige Rolle. Cloud Computing erhöht die Flexibilität der IT-Strukturen. Außerdem sind die regionale Unabhängigkeit der Arbeitsplätze und eine bessere Vereinbarung von Familie und Beruf, verbunden mit Möglichkeiten zur flexiblen Arbeitszeitgestaltung, zunehmend notwendig, um q...
Article
Full-text available
Since the beginning of the year 2009 the German press publishers have lobbied for their own neighbouring right which should cover even short snippets of online press articles. The new right should basically protect the press publishers' investments in the online environment. Currently there is an intensive debate among several involved interest gro...
Article
This paper studies the impact of ad-avoidance behavior in media markets. We consider a situation where viewers can avoid advertisement messages. As the media market is a two-sided market, increased ad-avoidance reduces advertisers' value of placing an ad. We contrast two financing regimes, free-to-air and pay-TV. We find that increased avoidance op...
Article
Full-text available
In many telecommunications markets incumbent providers enjoy a demand-side advantage over any entrant. However, market entrants may enjoy a supply-side advantage over the incumbent, since they are more efficient or operate on innovative technologies. Considering both a supply-side and a demand-side asymmetry, the present model analyzes the effect o...
Article
Full-text available
Television advertising levels in Europe are regulated according to the "Audiovisual Ser-vice Media Directive," where usually member states of the European Union even impose stricter regulation on their Public Service Broadcasting (PSB) channels. The present model evaluates the effects of symmetric and asymmetric regulation on competition for viewer...
Article
This model analyzes mobile network operators' (MNOs) incentives to invest in their facilities in the era of the mobile internet, given a widespread use of third generation (3G) services. Usually, MNOs agree on reciprocal roaming to offer full service to their subscribers. Roaming induces investment spillovers, as due to roaming agreements also riva...
Article
Das Angebot der Bundeskanzlerin steht wohl weiterhin: Wenn sich die Verleger bis dahin über ihre Wünsche einig werden, soll bei der für das Jahr 2011 ohnehin geplanten achten Novelle des Gesetzes gegen Wettbewerbsbeschränkungen (GWB) die schon lange avisierte Lockerung der Pressefusionskontrolle endlich miterledigt werden. In welche Richtung der Wu...
Article
Full-text available
This paper studies competition in the German market for mobile telecommunications, motivated by recent suggestions that T-Mobile and Vodafone possess a position of collective dominance. Allegedly, their position of joint dominance is secured through a combination of first-mover advantages and discrimination between on-net and off-net prices. While...
Article
Full-text available
Typically, incumbent providers enjoy a demand-side advantage over any entrant. However, market entrants may enjoy a supply-side advantage in costs over the incumbent, since they are more efficient or operate on innovative technologies, such as the voice of internet protocol (VoIP) telephony. Regulation with a supply-side asymmetry has rarely been a...

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