Keynotes.- GRIDs and Ambient Computing.- Natix: A Technology Overview.- Intelligent Support for Selection of COTS Products.- Regular Papers.- DAML Enabled Web Services and Agents in the Semantic Web.- Building Reliable Web Services Compositions.- NSPF: Designing a Notification Service Provider Framework for Web Services.- Active UDDI - An Extension to UDDI for Dynamic and Fault-Tolerant Service Invocation.- WS-Specification: Specifying Web Services Using UDDI Improvements.- Modeling Web Services Variability with Feature Diagrams.- A Dependency Markup Language forWeb Services.- Web Based Service for Embedded Devices.- Using Ontology to Bind Web Services to the Data Model of Automation Systems.- eXist: An Open Source Native XML Database.- WrapIt: Automated Integration of Web Databases with Extensional Overlaps.- Enhancing ECA Rules for Distributed Active Database Systems.- Improving XML Processing Using Adapted Data Structures.- Comparison of Schema Matching Evaluations.- Indexing Open Schemas.- On the Effectiveness of Web Usage Mining for Page Recommendation and Restructuring.- XML Fragment Caching for Small Mobile Internet Devices.- Support for Mobile Location-Aware Applications in MAGNET.- The XML Query Language Xcerpt: Design Principles, Examples, and Semantics.