iiWAS 2006 Best Papers *********************** Navigation Space Formalism and Exploration of Knowledge Worker Behavior on Intranet Peter Geczy, Noriaki Izumi, Shotaro Akaho, Kˆoiti Hasida (Japan) Multi-Feature Integration with Relevance Feedback on 3D Model Similarity Retrieval Saiful Akbar, Josef Kung, Roland Wagner, Ary S. Prihatmanto (Austria) MoMM 2006 Best Papers ******************** Multimedia Flow Mobility in Heterogeneous Networks Using Multihomed Mobile IPv6 Christer Ahlund, Robert Brännström, Karl Andersson, Örjan Tjernström (Sweden) Performance of a H.264/AVC Error Detection Algorithm Based on Syntax Analysis Luca Superiori, Olivia Nemethova, Markus Rupp (Austria) Best Workshop Paper ******************* A context authentication proxy for ipsec using spatial reference Rene Mayrhofer (UK)