First International Workshop on Best Practices of UML (BP-UML 2005) -- Preface to BP-UML 2005 -- Experience Reports and new Applications -- Current Practices in the Use of UML -- An Empirical Study of the Nesting Level of Composite States Within UML Statechart Diagrams -- Utilizing a Multimedia UML Framework for an Image Database Application -- Model Evaluation and Requirements Modeling -- Object Class or Association Class? Testing the User Effect on Cardinality Interpretation -- Organizing and Managing Use Cases -- A Comparative Analysis of Use Case Relationships -- Metamodeling and Model Driven Development -- Applying Transformations to Model Driven Development of Web Applications -- A Precise Approach for the Analysis of the UML Models Consistency -- A UML 2 Profile for Business Process Modelling -- Seventh International Bi-conference Workshop on Agent-Oriented Information Systems (AOIS-2005) -- Preface to AOIS 2005 -- Invited Talk -- Agent Oriented Data Integration -- Positions in Engineering Agent Oriented Systems -- AOSE and Organic Computing - How Can They Benefit from Each Other? Position Paper -- Modeling Dynamic Engineering Design Processes in PSI -- Agent Oriented Methodologies and Conceptual Modeling -- Preliminary Basis for an Ontology-Based Methodological Approach for Multi-agent Systems -- DDEMAS: A Domain Design Technique for Multi-agent Domain Engineering -- An Agent-Oriented Meta-model for Enterprise Modelling -- Agent Communication and Coordination -- An Approach to Broaden the Semantic Coverage of ACL Speech Acts -- Normative Pragmatics for Agent Communication Languages -- Experimental Comparison of Rational Choice Theory, Norm and Rights Based Multi Agent Systems -- Second International Workshop on Conceptual Modeling for Geographic Information Systems (CoMoGIS 2005).-Preface to CoMoGIS 2005 -- Invited Talk -- Map Algebra Extended with Functors for Temporal Data -- Spatial and Spatio-temporal Data Representation -- A Formal Model for Representing Point Trajectories in Two-Dimensional Spaces -- A Logical Approach for Modeling Spatio-temporal Objects and Events -- Conceptual Neighbourhood Diagrams for Representing Moving Objects -- Spatial Relations -- A Refined Line-Line Spatial Relationship Model for Spatial Conflict Detection -- Assessing Topological Consistency for Collapse Operation in Generalization of Spatial Databases -- Spatial Relations for Semantic Similarity Measurement -- Spatial Queries, Analysis and Data Mining -- Approximate Continuous K Nearest Neighbor Queries for Continuous Moving Objects with Pre-defined Paths -- Spatio-temporal Similarity Analysis Between Trajectories on Road Networks -- Using Data Mining for Modeling Personalized Maps -- Data Modeling and Visualisation -- 3D Scene Modeling for Activity Detection -- SAMATS - Edge Highlighting and Intersection Rating Explained -- Applying Semantic Web Technologies for Geodata Integration and Visualization -- Sixth International Workshop on Conceptual Modeling Approaches for e-Business (eCOMO 2005) -- Preface to eCOMO 2005 -- Bargaining in E-Business Systems -- Conceptual Content Management for Enterprise Web Services -- Verifying Web Services Composition -- Towards Amplifying Business Process Reuse -- First International Workshop on Quality of Information Systems (QoIS 2005) -- Preface to QoIS 2005 -- Information System Models Quality -- Measuring the Perceived Semantic Quality of Information Models -- Situated Support for Choice of Representation for a Semantic Web Application -- Towards Systematic Model Assessment -- A Fuzzy Based Approach to Measure Completeness of an Entity-RelationshipModel -- Quality Driven Processes -- Managing Information Quality in e-Science: A Case Study in Proteomics -- Tool Support and Specification Quality: Experimental Validation of an RE-Tool Evaluation Framework -- Improving Object-Oriented Micro Architectural Design Through Knowledge Systematization -- Tutorials -- Tutorial 1: eduWeaver - The Courseware Modeling Tool -- Tutorial 2: FOOM - Functional and Object Oriented Methodology: An Integrated Approach -- Tutorial 3: Domain Engineering - Using Domain Concepts to Guide Software Design -- Tutorial 4: Reasoning About Web Information Systems -- Tutorial 5: Schema and Data Translation -- Tutorial 6: Modeling and Simulation of Dynamic Engineering Design Processes -- Tutorial 7: Modeling Enterprise Applications.

We are pleased to present the proceedings of the workshops held in conjunction with ER 2005, the 24th International Conference on Conceptual Modeling. The objective of these workshops was to extend the spectrum of the main conferencebygivingparticipantsanopportunitytopresentanddiscussemerging hot topics related to conceptual modeling and to add new perspectives to this key mechanism for understanding and representing organizations, including the new "virtual" e-environments and the information systems that support them. To meet this objective, we selected 5 workshops: - AOIS 2005: 7th International Bi-conference Workshop on Agent-Oriented Information Systems - BP-UML 2005: 1st International Workshop on Best Practices of UML - CoMoGIS 2005: 2nd International Workshop on Conceptual Modeling for Geographic Information Systems - eCOMO 2005: 6th International Workshop on Conceptual Modeling - proaches for E-business - QoIS 2005: 1st International Workshop on Quality of Information Systems These 5 workshops attracted 18, 27, 31, 9, and 17 papers, respectively. F- lowing the ER workshopphilosophy, program committees selected contributions on the basis of strong peer reviews in order to maintain a high standard for accepted papers. The committees accepted 8, 9, 12, 4, and 7 papers, for acc- tance ratesof 44%,33%,39%,44%, and 41%,respectively. In total, 40 workshop papers were selected out of 102 submissions with a weighted averageacceptance rate of 40%.