First International Workshop on Conceptual Modeling for GIS (CoMoGIS 2004).- Preface to CoMoGIS 2004.- Geographical Conceptual Modeling.- A Conceptual Model for Supporting Multiple Representations and Topology Management.- Modeling Geospatial Databases with Plug-Ins for Visual Languages: A Pragmatic Approach and the Impacts of 16 Years of Research and Experimentations on Perceptory.- Representing Ecological Niches in a Conceptual Model.- A CASE Tool for Geographic Database Design Supporting Analysis Patterns.- Spatial Storage, Indexing and Data Consistency.- GML Storage: A Spatial Database Approach.- TPKDB-Tree: An Index Structure for Efficient Retrieval of Future Positions of Moving Objects.- Moving Point Indexing for Future Location Query.- Topological Consistency for Collapse Operation in Multi-scale Databases.- Spatial Representation and Spatial Services.- Symbolization of Mobile Object Trajectories with the Support to Motion Data Mining.- Representing and Reasoning About Spatial Knowledge Based on Spatial Relevant Logic.- Towards System Architecture of Spatial Information Grid and Service-Based Collaboration.- Geo Web Services Based on Semantic.- Spatial Querying and Retrieval.- A Scaleless Data Model for Direct and Progressive Spatial Query Processing.- Querying Heterogeneous Spatial Databases: Combining an Ontology with Similarity Functions.- Retrieval of Heterogeneous Geographical Information Using Concept Brokering and Upper Level Ontology.- A New Quick Point Location Algorithm.- First International Workshop on Conceptual Model-Directed Web Information Integration and Mining (CoMWIM 2004).- Preface to CoMWIM 2004.- Web Information Integration.- Checking Semantic Integrity Constraints on Integrated Web Documents.- X2S: Translating XPath into Efficient SQL Queries.- On Aggregation Operators for Fuzzy Information Sources.- Web Information Mining.- CL2: A Multi-dimensional Clustering Approach in Sensor Networks.- TCMiner: A High Performance Data Mining System for Multi-dimensional Data Analysis of Traditional Chinese Medicine Prescriptions.- Association Rule Mining Based on the Multiple-Dimensional Item Attributes.- Conceptual Model for Web Information.- OWL-Based Semantic Conflicts Detection and Resolution for Data Interoperability.- From Ontology to Relational Databases.- A New Dynamic Indexing Structure for Searching Time-Series Patterns.- Web Information Systems and Web Services.- Automatic Location and Separation of Records: A Case Study in the Genealogical Domain.- Research and Implementation of CORBA Web Services.- Grammar Based Interface Processing in Web Service Composition.- Query Rewriting for Extracting Data Behind HTML Forms.- Third International Workshop on Evolution and Change in Data Management (ECDM 2004).- Preface to ECDM 2004.- Systems Evolution Support in Conceptual Modeling.- Automatic Integrity Constraint Evolution due to Model Subtract Operations.- An Ontological Framework for Evolutionary Model Management.- Elementary Translations: The Seesaws for Achieving Traceability Between Database Schemata.- Temporal and Evolution Aspects in Internet-Based Information Systems.- Towards the Managment of Time in Data-Intensive Web Sites.- Evolution of XML-Based Mediation Queries in a Data Integration System.- Schema Evolution and Versioning in Data Management.- Schema Versioning in Data Warehouses.- Facilitating Database Attribute Domain Evolution Using Mesodata.- Multitemporal Conditional Schema Evolution.- First International Workshop on Conceptual Modeling for Agents (CoMoA 2004).- Preface to CoMoA 2004.- Conceptual Modelling of Agents.- A Sociological Framework for Multi-agent Systems Validation and Verification.- Spatio-temporal Relevant Logic as the Logical Basis for Specifying, Verifying, and Reasoning About Mobile Multi-agent Systems.- Towards an Ontology for Agent Mobility.- Agents' Applications and Conceptual Models.- Subjective Trust Inferred by Kalman Filtering vs. a Fuzzy Reputation.- Conceptual Model of BDI Agents within an ITS.- Model-Driven Agent-Based Web Services IDE.- AFDM: A UML-Based Methodology for Engineering Intelligent Agents.- First International Workshop on Digital Government: Systems and Technologies (DGOV 2004).- Preface to DGOV 2004.- Digital Government: Systems.- IECS: An Integrated E-Community System for Management, Decision and Service.- WebDG - A Platform for E-Government Web Services.- A Study on Camera-Detector System for Traffic Control in Korea.- Digital Government: Technologies.- Ontology-Based Models of Legal Knowledge.- Aspects of Regulatory and Legal Implications on e-Voting.- Architecture for Implementing the Mobile Government Services in Korea.- Fifth International Workshop on Conceptual Modeling Approaches for E-Business (eCOMO 2004).- Preface to eCOMO 2004.- E-Business Systems Requirements Engineering.- Modeling Business Strategy in E-Business Systems Requirements Engineering.- A Method and Tool for Wide Audience Requirements Elicitation and Rapid Prototyping for Mobile Systems.- Methodology for the Development of a Sectoral Standard for EDI.- E-Business Systems Requirements Engineering.- Classification of Business Process Correspondences and Associated Integration Operators.- On Behavioural Model Transformation in Web Services.- Model-Driven Planning and Development of Infrastructures for E-Commerce.