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I'm behind most of the stuff behind 40Hz.org. Currently, this site serves as a repository for my current and past open source projects and to promote techniques for platform independent information exchange such as XML.
You can reach me via email here.
Short Bio
since 2011: Principal Engineer, SW Development, Mobile Phones, Nokia (Tampere, Finland)
2009 to 2011: Head of Qt Productization/Release Engineering, Nokia (Tampere, Finland)
2008 to 2009: Director of S60 Core Systems Technology Operations, Nokia (Tampere, Finland)
2002 to 2007: Senior Engineer / Specialist, Digital Rights Management, S60, Nokia (Tampere, Finland).
2000 to 2002: Software Engineer at IBM Research, Almaden, USA in the Electronic Music Management System (EMMS) project
2001: Ph.D. in Information Systems, University of Essen
1996 to 2000: Research and Teaching Assistant at the Dept. for Information Systems and Software Techniques at the University of Essen, Germany.
1997: Diploma II in Information Systems, University of Essen
1996: Diploma I in Information Systems, University of Essen
1990 to 1996: Freelance programmer
Projects
XML
Main focus on Active Hypertext Documents, implementations include JKino and Kino runtime environments.
Newton MessagePad
Since currently, no equally capable, versatile and integrated tool exists to replace the Newton platform, a number of Newton open source software projects has been published on 40Hz.org. Among these are time management and XML-related packages.
Other
Other areas of interest include the programming languages Eiffel and Lua and the integration tool SWIG.
Publications
Guth S., Köppen E.: Electronic Rights Enforcement for Learning Media, Proc. of the IEEE International Conference on Advanced Learning Technologies, Kazan, 2002
Conen W., Klapsing R., Köppen E.: RDF M & S revisited: From Reification to Nesting, from Containers to Lists, from Dialect to pure XML, Proc. of the Semantic Web Working Symposium, 2001
Conen W., Dridi F., Köppen E.: A secure XML/Java-based Implementation of Auction Services for Complex Resource Allocation Problems, Proc. of WETICE2000, IEEE 9th Intl. Workshops on Enabling Technologies: Infrastructure for Collaborative Enterprises, 2000.
Köppen E., Neumann G.: Implement, Gustaf! The Kino XML/CSS Processor, 8th World Wide Web Conference, Poster Session, Toronto 1999.
Köppen E., Neumann G.: Virtualization of Course Structures through Adaptive Internet Techniques, Proceedings of 22nd Conf. of the GfKl; Springer, Heidelberg 1999
Köppen E., Neumann G.: A Practical Approach towards Active Hyperlinked Documents, Proceedings of the 7th Int. World Wide Web Conference, Brisbane, Australia 1998. (original submission)
Köppen E., Neumann G., Nusser S.: Cineast - An Extensible Web Browser, Proceedings of the WebNet 1997 World Conference on WWW, Internet and Intranet, Nov. 1-5, Toronto 1997.
Lectures, Talks and Presentations
Köppen E: Informationssystemanalyse, University of Essen course material, Essen 1996-2000.
Köppen E: Objektorientierter Software-Entwurf, University of Essen course material, Essen 1996-2000.
Köppen E: XML - Zukünfigte Anwendungen und Perspektiven , EUROFORUM: XML für eBusiness, Munich 1999. (German)
Köppen E: The Kino XML/CSS Implemenation, 8th World Wide Web Conference, Developer's Day, Toronto 1999.