University of Paderborn

About: University of Paderborn is a education organization based out in Paderborn, Nordrhein-Westfalen, Germany. It is known for research contribution in the topics: Computer science & Context (language use). The organization has 6684 authors who have published 16929 publications receiving 323154 citations.

Catalyzed Routes to Molecular Hydrogen Formation and Hydrogen Addition Reactions on Neutral Polycyclic Aromatic Hydrocarbons under Interstellar Conditions

Abstract: We present first-principle calculations which reveal the existence of low-barrier routes to molecular hydrogen formation on the polycyclic aromatic hydrocarbon (PAH) molecule coronene via Eley-Rideal abstraction reactions and show that such processes could indeed be active under interstellar conditions. The calculations indicate that in regions of low UV flux, coronene, and larger PAHs might be found in superhydrogenated states. Furthermore, the calculations imply that not only edge carbon atoms but also carbon atoms on the inner rings of the coronene molecule can be hydrogenated. Such superhydrogenated PAHs are expected to exhibit significantly changed absorption and emission spectra.

NetInf: An Information-Centric Design for the Future Internet

Abstract: The current Internet architecture has been very successful and has scaled well beyond the original aspirations. Nevertheless, the architecture suffers from multiple well docu- mented problems, many of which result from the fact that the usage of the Internet has changed drastically. For example, the original Internet architecture is designed to provide access to specific nodes in the network whereas today's usage is dominated by information dissemination where the information requester does not care about the source location. To adjust to those chan- ges, we develop a new, information-centric network architecture called Network of Information (NetInf ) in the context of the FP7 EU-funded 4WARD project. This architecture can significantly improve large scale information distribution. Furthermore, it supports future mobile networks in situations with intermittent and heterogeneous connectivity and connects the digital with the physical world to enable better user experience. NetInf is built upon an extended identifier/locator split which is based on a simple but powerful information model. Main aspects of NetInf include the persistent naming of information, a world- wide scalable name resolution mechanism for flat identifiers, and improved information availability and dissemination via caching and storage integrated into the network architecture.