Table of contents : Table of Contents......Page 6 Preface......Page 7 1. Ontologies for the Semantic Web......Page 9 2. Web Services Overview for Net-Centric Operations......Page 20 3. Metadata Concepts to Support a Net-Centric Data Environment......Page 35 4. Distributed Geospatial Intelligence Integration and Interoperability through the GIDB® Portal System......Page 61 5. Analyzing Intelligence Data......Page 88 6. Linking Military Systems with Simulations and Intelligent Agents through Web Services......Page 107 7. A Multi-Agent Architecture for Distributed Domain-Specific Information Integration......Page 133 8. Natural Environment Data Services in Distributed Modeling and Simulation......Page 153 G......Page 179 N......Page 180 V......Page 181 X......Page 182