Hans Hagen is heading the research group for Computer Graphics and Computer Geometry at the University of Kaiserslautern, Germany. He is both a national and an international pioneer in his research domains geometric modeling and scientific visualization. Additionally, his scientific interests cover the domains of computer graphics and computer aided geometric design. He is the former Editor-in-Chief of the IEEE Transactions on Visualization and Computer Graphics and is co-editor of all relevant computer graphics journals. He received several calls, among others also offers on Dean and Chairman positions at prominent American universities. His scientific work covers more than 150 refereed publications and 14 books.