Matthias Hullin, University of Bonn (image) University of Bonn Caption This is Matthias Hullin from the Institute of Computer Science II at the University of Bonn. Credit Photo: Hullin Usage Restrictions This photo may be used with the press release. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.