Gerti Kappel has been a full professor for business informatics at the Vienna University of Technology since 2001. Prior to that, she was a full professor for computer science at the Johannes Kepler University Linz, Austria. She attained her MSc and PhD degrees in computer science from the University of Vienna and the Vienna University of Technology in 1984 and 1987, respectively. From 1987 to 1989, she was a visiting researcher at the Centre Universitaire d'Informatique in Geneva, Switzerland. Her current research interests include object-oriented modeling, database/Web integration, ubiquitous Web technologies, Web engineering, and workflow management and e?commerce applications. She has been involved in national and international projects conducted jointly by universities and the industry, and projects sponsored by the Federal Ministry for Education, Science and Culture, and the EU. She is a member of ACM, IEEE, GI, and OCG, a co-author of the book "UML@Work-From Analysis to Implementation", and a scientific consultant to many industrial projects.

Birgit Pröll studied computer science at the Johannes Kepler University Linz, Austria, where she obtained her MSc in 2001. Since 1991, she has been employed with the FAW (Institute for Applied Knowledge Processing) at the Johannes Kepler University, Linz. She has been engaged in industrial and research projects in the areas of expert systems and CAD, configuration management, relational and object-oriented databases, and information systems and e?commerce on the World Wide Web. From 1995 to 2000, she had managed the development of the Web-based tourism information systems TIS@WEB and TIScover at the FAW. In 2003, she received her habilitation (venia docendi) for applied computer science from the Faculty of Natural Sciences and Engineering of JKU. Her current research interests and fields of teaching comprise information retrieval, Web engineering, and e-commerce.

Siegfried Reich has been a scientific director of the Salzburg Research, a non-profit research organization, which provides support and scientific evaluation of application-oriented research in information and communication technologies (ICTs), focused on creating and managing digital content ("Digital Content Engineering"). He received his MSc in applied computer science from the University of Linz (1992) and a PhD in computer science and economics from the University of Vienna (1995). From 1996 to 1999, he worked as a lecturer with the Multimedia Research Group at Southampton, UK, mainly on open hypermedia system interoperability and the application of user trails for navigating information spaces. In these fields, he has published over 50 international papers, and has headed many conferences and workshops. He is a member of the Open Hypermedia Systems Working Group (OHSWG), ACM, IEEE, and the OCG (Austrian Computer Society). He has been involved in several European research projects, including EUROPUBLISHING (RACE 2042), MEMOIR (ESPRIT 22153), and CULTOS (IST 28134).

Werner Retschitzegger studied business informatics at the Johannes Kepler University (JKU) Linz, Austria. He attained his MSc (1991) and PhD (1996) degrees from the Faculty of Business, Economics and Social Sciences, and his habilitation (venia docendi) for applied computer science from the Faculty of Natural Sciences and Engineering of JKU. From 1990 to 1993, he has been working with the Institute for Applied Knowledge Processing in Hagenberg, Austria, where he had been involved in various national and international industrial and research projects. Since 1993, he is affiliated with the Department of Information Systems at JKU. In 2002, he obtained a temporary full professorship for business informatics from the Vienna University of Technology. He has published more than 80 papers in international journals and conference proceedings. His research interests include object-oriented modeling, integration of database and Web technology, ubiquitous Web applications, Model Engineering and Web Engineering.