His research interests are Object Orientation, Semantic Web and Ubiquitous Computing. Owsnicki-Klewe (who calls himself “Doc OK”) received both a Ph.D. in Computer Science and a Diploma in Computer Science from the University of Hamburg. His work has been published in Informatik Spectrum, AI Magazine and other refereed journals and proceedings. Among the courses he teaches: Discrete Structures, Web Design for E-Commerce, Web Server Administration and Theory of Computation.