With the Multimedia Metadata Ontology (M3O), we havedeveloped a sophisticated model for representing among others the annotation,decomposition, and provenance of multimedia metadata. Thegoal of the M3O is to integrate the existing metadata standards andmetadata formats rather than replacing...

The semantics of rich multimedia presentations in the websuch as SMIL, SVG and Flash cannot or only to a verylimited extend be understood by search engines today. Thishampers the retrieval of such presentations and makes theirarchival and management a difficult task. Existing metadatamodels and...

Dieses Dokument schlägt ein Konzept für eine Personal Key Infrastrukturin iCity vor. Über ein Trust Center (TC) ausgestellte Zertikategewährleisten einen sicheren Schlüsselaustausch mit nachweisbarer Authentisierungdes Kommunikationspartners, Abhörsicherheit sowie Unverfälschtheit und...

Conventional security infrastructures in the Internet cannot be directlyadopted to ambient systems, especially if based on short-range communi-cation channels: Personal, mobile devices are used and the participants arepresent during communication, so privacy protection is a crucial issue....