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Dr. Andreas Raab is a German-born computer scientist. He attended the University of Magdeburg (Germany) and received a Diplom-Informatiker in 1994 and a Ph.D. in Computer Science in 1998. During his doctoral research he developed various new techniques for analyzing geometric models (global shape estimation operators), visualizing 3D models (based on real-time non-photorealistic techniques), as well as new interaction metaphors for 3D models (e.g., using zoom techniques for inplace interaction and emphasis in 3D models). Raab worked with Alan Kay at Disney on implementing real-time graphics capabilities into Squeak, including support for real-time vector graphics (Flash), real-time 3D graphics, advanced 3D modelling techniques (Teddy), as well as integrating these components into the "eToy" environment (the kids scripting environment). In 2004 Raab joined HP-Labs in Palo Alto, California where he continued to apply his expertise to research into the design and implementation of object-oriented systems. Raab is currently the maintainer of the Squeak virtual machine for Microsoft Windows and is one of six principal architects of the Croquet project (along with Alan Kay, David P. Reed, Julian Lombardi, David A. Smith, and Mark McCahill).