| since 2021 | Chairman of the pro WiWi e. V. of the Faculty of Economics and Media at the TU Ilmenau |
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| 2016 | Co-organiser of the MKWI 2016 - Multiconference Business Informatics, 09-11 March 2016 at Ilmenau University of Technology |
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| since 2013 | Member of the Editorial Board of the journal "Прикладная информатика" (Applied Informatics), one of the leading scientific journals for business informatics in Russia |
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| since 2012 | Regular expert opinions for the Trends in Enterprise Architecture Research (TEAR) workshops |
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| 2012-2013 | Participation in the programme committee of Track 5: Information and Knowledge Management of the 11th International Conference on Business Informatics http://www.wi2013.de |
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| 2012 | Reviewer for the 11th International Conference on Business Informatics http://www.wi2013.de |
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| 2012 | Reviewer for the 46th Hawaii International Conference on System Sciences (HICSS) |
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| 2012 | Leading an ideas competition on the future of smartphones at the TU Ilmenau, organised by HTC, a Taiwanese manufacturer of mobile phones and tablet computers, at various universities in Europe. |
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| 2012 | Membership in the expert jury of the INNOVATIONSPREIS-IT 2012
and review of applications for the most innovative IT solutions for SMEs.
http://www.imittelstand.de/innovationspreis-it/2012 |
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| 2012 | Reviewer for European Conference on Information Systems ECIS 2012 in Barcelone http://www.ecis2012.eu/ |
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| 2011 | Reviewer for the Multiconference on Business Informatics 2012 in Braunschweig |
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| 2010 - 2011 | Associate Editor for the track Information Management at the International Conference on Information Systems (WI 2011) in Zurich in February 2011 |
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| April 2010 | Leiter des Teams der TU Ilmenau und Dozent beim ERASMUS-Intensivprogramm "Making business work in the new Europe - developing and transferring business knowledge in the Baltic Sea region" in Riga vom 8. - 19. April 2010 an der Technischen Universität in Riga |
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| 2010 | Member of the programme committee of the GI conference Software Management 2010 on 2 - 3 December 2010 in Aachen |
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| October 2009 | |
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| 2008-2009 | |
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| 2008 | Member of the programme committee for the GI workshop IT-supported knowledge management at the 38th annual conference of the Gesellschaft für Informatik 08 - 13.09.2008 in Munich |
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| April - June 2008 | Reviewer for the journal DBW (DIE BETRIEBSWIRTSCHAFT) |
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| 2008 | Member of the programme committee of the Software Management 2008 conference on 12 - 14 November 2008 at the University of Stuttgart |
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| 2006-2021 | Deputy Chairman of the proWiWi e. V. of the Faculty of Economics at the TU Ilmenau |
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| since May 2006 | Collaboration in eCampus Thüringen (an initiative of the computer science programmes in Thüringen) |
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| 2006-2007 | Reviewer for the 8th International Conference on Business Informatics 2007 in Karlsruhe |
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| since September 2005 | Co-editor of the Ilmenau Contributions to Business Informatics |
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| July 2005 | Reviewer for the German Research Foundation |
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| May 2005 - February 2006 | Member of the programme committee of the conference Service Oriented Electronic Commerce of the section 5.5 Electronic Commerce of the Gesellschaft für Informatik in the context of the multi-conference Wirtschaftsinformatik 2006 in Passau |
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| 2004-2006 | Member of the Advisory Board of the Institut der Wirtschaft Thüringens GmbH (IWT), Erfurt |
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| August 2004 | Reviewer for the 7th International Conference on Business Informatics 2005 in Bamberg |
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| since 2002 | Reviewer of the journal Empirical Software Engineering |
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| 2002-2003 | Member of the Programme Committee of the 6th International Conference on Business Informatics 2003 in Dresden |
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| since 2002 | Co-editor of the series Wirtschaftsinformatik at Josef Eul Verlag |
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| 2002 | Member of the Programme Committee of the Conference E-Commerce: Networks, Markets, Technologies of the Section 5.5 Electronic Commerce of the Gesellschaft für Informatik (German Informatics Society) at the Multi-Conference Business Informatics 2002 in Nuremberg |
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| 2002 | Participation in the preliminary jury for the selection of the winners of the Ilmenau Multimedia Award i-m@p 2002 |
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| 2001 | Chair and content preparation of the workshop B2B E-Markets - Beyond MRO at the "First IFIP conference on E-Commerce, E-Business, E-Government" at the University of Zurich |
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| 2001 | Management and content preparation of the workshop "Electronic Marketplaces in the B2B Sector" within the framework of the International Scientific Colloquium of the TU Ilmenau ( Internationales Wissenschaftliches Kolloquium) |
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| 2001-2002 | Management of the project funded by the Federal Ministry of Education and Research "Support for a business start-up within the framework of the EXIST-SEED funding programme in the field of Internet information services: Technology provider for state sports associations" (funding code 03ESGD04), (milon.de, research projects at TU-Ilmenau) |
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| 2001-2015 | Lecturer for E-Business of the Executive Master of Business Administration programme at the Johannes Gutenberg University Mainz |
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| 2000 | Chair of the workshop "B2B-Marktplätze: Geschäftsmodelle und IV-Architekturen" (B2B Marketplaces: Business Models and IV Architectures) of the Section 5.5 Electronic Commerce of the Gesellschaft für Informatik (German Informatics Society) in the context of the Verbundtagung Wirtschaftsinformatik Siegen 2000 (Joint Conference on Business Informatics Siegen 2000). |
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| 2000-2001 | Lecturer on IT-Security and Payment Systems in the Global e-Commerce Masters (GEM) programme (a network of international business schools with a common curriculum) at the University of Cologne |
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| since 1999 | Reviewer of the journal Information Resources Management Journal (IRMJ) |
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| since 1999 | Reviewer of the journal IEEE Software |
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| since 1999 | Member of Deutschen Hochschulverband |
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| since 1999 | Member of the Association of University Teachers of Betriebswirtschaft e. V. |
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| 1998-1999 | Representative of the Gesellschaft für Informatik at the University of Cologne |
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| 1996-1999 | Member of the joint examination board for the diploma degree programmes in Business Administration, Economics, Business Education and Economics in the Social Sciences at the Faculty of Economics and Social Sciences of the University of Cologne |
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| 1995-1999 | Head of a working group of quality managers at German software suppliers |
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| since 1987 | Member of the Gesellschaft für Informatik |
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