'<p class=bio><img src=/images/tools/speakers/pree.jpg width=100 align=left><b> Wolfgang Pree </b> is professor of computer science at the University of Constance. He has worked for several years in many areas of software engineering, in particular focusing on object-oriented software development, software architectures, frameworks, and human-computer interaction. Wolfgang is the author of &quot;Design Patterns for Object-Oriented Software Development&quot; (Addison-Wesley, 1995) and coauthor of an upcoming book on &quot;The UML-F Profile for Framework Architectures&quot'