308 About the Authors Copyright 2006, Idea
About the Authors 309 Copyright 2006, Idea Group Inc. Copying or distributing in print or electronic forms without written permission of Idea Group Inc. is prohibited. Engineering group) from 1991 to 1994, where he worked with semiotic aspects of graphics and multimedia communication. In 1998-2003, he worked within the field of maritime human factors for the former Danish Maritime Institute (now a part of Force Technology) and within the field of human-machine interaction in the former Centre for Human- Machine Interaction. Main parts of his research deal with semiotic and conceptual foundations of human-machine interaction. In 1994-98 and again from 2003-present, he has also been working with problems of conceptual understanding in engineering education and with instructional design. He is presently employed by the Technical University of Denmark, where he works as an educational consultant at the LearningLab DTU. He is also designing and teaching a course on human-machine interaction in safetycritical domains, together with colleagues from rsted-DTU. Constantinos Mourlas is an assistant professor in the National and Kapodistrian University of Athens (Greece), Department of Communication and Media Studies since 2002. He was born in Athens (Greece) in 1966. He graduated from the University of Crete in 1988 with a diploma in computer science and obtained his PhD from the Department of Informatics, University of Athens in 1995. In 1998, he was an ERCIM fellow for postdoctoral studies through research. He was employed as lecturer at the University of Cyprus, Department of Computer Science, from 1999-2002. His initial research work has been focused on distributed multimedia systems, quality of service issues, streaming media, and the Internet. His current main research interest is the development of environments that provide adaptive and personalized context to the Internet users according to their needs, preferences, and cognitive characteristics. He currently coordinates a national funded research project on Web personalization. Liam Murphy is a senior lecturer in computer science at University College Dublin, where he is director of the Performance Engineering Laboratory. His current research projects involve mobile and wireless systems, computer network convergence issues, and Web services performance issues. Dr. Murphy has a BE in electrical engineering from University College Dublin, and an MSc and a PhD in electrical engineering and computer sciences from the University of California, Berkeley. Cecilia Sik-L nyi is an associate professor at the University of Veszpr m, Department of Image Processing and Neurocomputing. She received an MSc in mathematics and computer science at the J zsef Attila University, Szeged. She obtained She obtained a doctoral degree in physical chemistry and a PhD in computer science. She reads and leads laboratory studies on multimedia and virtual reality. Her research area is in multimedia and virtual reality in education and rehabilitation. Klara Nahrstedt is a full professor at the University of Illinois at Urbana-Champaign, Computer Science Department. Dr. Nahrstedt received her BA in mathematics from Humboldt University, Berlin, in 1984, and MSc degree in numerical analysis from the same university in 1985. She was a research scientist in the Institute for Informatik in Berlin until 1990. In 1995, she received her PhD from the University of Pennsylvania in the
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