Short CV/Education and training

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    Head of the research department "Information and Communication Technologies" at the Centre for European Economic Research (ZEW) in Mannheim, Germany

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    European Doctoral Program in Quantitative Economics and doctoral degree in Economics from the Catholic University of Louvain, Louvain-la-Neuve, Belgium

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    Study Economics at the University of Mannheim and at the Catholic University of Louvain, Louvain-la-Neuve, Belgium

Selected publications

  • IT Outsourcing – A Source of Innovation? – Microeconometric Evidence for Germany, wird erscheinen in Managerial and Decision Economics (mit Daniel Erdsiek und Manuel Trenz).

  • The Economic Impacts of Broadband Internet: A Survey, Review of Network Economics 14 (4), 201-227, 2016 (mit Wolfgang Briglauer, Kai Hüschelrath, Benedikt Kauf und Thomas Niebel).

  • Mobile and More Productive? Firm-Level Evidence on the Productivity Effects of Mobile Internet Use, Telecommunications Policy, 140(9), 888-898, 2016 (mit Thomas Niebel).

  • Trade and Technology: New Evidence on the Productivity Sorting of Firms, Review of World Economics, 151(1), 53-72, 2015 (mit Jan Hogrefe und Fabienne Rasel).

  • More Bits – More Bucks? Measuring the Impact of Broadband Internet on Firm Performance, Information Economics and Policy, 25(3), 190 – 203, 2013 (mit Daniel Cerquera und Gordon J. Klein).

  • Wissensvermittlung versus Legitimationsfunktion – Warum engagieren Unternehmen IT-Berater?, Zeitschrift für Betriebswirtschaft 81(12), 1379 – 1399, 2011.

  • B2B or Not to Be: Does B2B E-Commerce Increase Labour Productivity?, International Journal of the Economics of Business, 13(3), 387-405, 2006 (mit Helmut Fryges und Ulrich Kaiser).

  • Productivity Effects of Organizational Change: Microeconometric Evidence, Management Science, 50(3), 394-404, 2004 (mit Ulrich Kaiser).

  • Convenient Estimators for the Panel Probit Model, Journal of Econometrics, 87, 329-37,1998 (mit Michael Lechner).

  • On Nonparametric Estimation of the Schumpeterian Link between Innovation and Firm Size, Empirical Economics, 21(3), 401-426, 1996 (mit Horst Entorf).

  • Product and Process Innovation as a Response to Increasing Imports and Foreign Direct Investment, The Journal of Industrial Economics XLIII(4), 341-357, 1995.



Complete list of publications

Selected projects

  • Challenges and Opportunities Arising from Ubiquitous Working, network project funded by the Leibniz Association, 2014 – 2017

  • Does Extrovertedness Pay Off? An Empirical Analysis of the Role of Social Media on Firm Performance, Fritz Thyssen Foundation, 2013 – 2015

  • Monitoring Information Economy: The objective of the project is to analyse the digitalisation and the role of the Internet for the German economy, Federal Ministry for Economic Affairs and Energy, joint with TNS Infratest, 2012 – 2017

  • Monitoring the Cultural and Creative Economy: Analysis of the strengths, weaknesses and potentials, Federal Ministry for Economic Affairs and Energy, joint with Fraunhofer Institute for System- and Innovation Research (ISI), Project coordination, 2012 – 2018

  • SERVICEGAP – The Impact of Service Sector Innovation and Internationalisation on Growth and Productivity: Project within the 7th EU-Framework Programme, Lead of the work package on firm strategies in the knowledge-based economy, 2010 – 2013

  • ICTNET – Coordinated Support Action for Research on the Economics of ICT; The objective of ICTNET was to enhance coordination of the research in the economics of ICT in Europe. The project was built around a coordination group and a network of researchers. Lead of work package on ICT, productivity and growth; 7th Framework Programme, 2010 – 2012

Membership in scientific bodies/juries

  • Member of the Board of Directors of the Leibniz ScienceCampus Mannheim Centre for Competition and Innovation (MaCCI), since 2015

  • Member of the Regional Research Alliance Digital Transformation of Socio-Economic Processes, Mannheim and Karlsruhe

  • Member of the platform „Innovative Digitalization of the Economy“ of the National IT Summit Process chaired by the Federal Minister for Economic Affairs and Energy and the president of Bitkom

  • Member of the expert group „Work 4.0“ of the Federal Ministry for Labour and Social Affairs, chaired by State Secretary Thorben Albrecht, 2015 – 2016

  • Member of the council for innovation and competitiveness chaired by the Minister of Finance and Economy of the state of Baden-Wuerttemberg, Dr. Nils Schmid, 2014 – 2015

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