Invited Speakers.- Software Services: Scientific Challenge or Industrial Hype?.- Integrating Variants of DC.- Challenges in Increasing Tool Support for Programming.- A Predicate Spatial Logic and Model Checking for Mobile Processes.- Concurrent and Distributed Systems.- Object Connectivity and Full Abstraction for a Concurrent Calculus of Classes.- Specifying Software Connectors.- Replicative – Distribution Rules in P Systems with Active Membranes.- A Generalisation of a Relational Structures Model of Concurrency.- A Logical Characterization of Efficiency Preorders.- Inherent Causal Orderings of Partial Order Scenarios.- Atomic Components.- Towards an Optimization-Based Method for Consolidating Domain Variabilities in Domain-Specific Web Services Composition.- Model Integration and Theory Unification.- A Formal Framework for Ontology Integration Based on a Default Extension to DDL.- A Predicative Semantic Model for Integrating UML Models.- An Automatic Mapping from Statecharts to Verilog.- Reverse Observation Equivalence Between Labelled State Transition Systems.- Program Reasoning and Testing.- Minimal Spanning Set for Coverage Testing of Interactive Systems.- An Approach to Integration Testing Based on Data Flow Specifications.- Combining Algebraic and Model-Based Test Case Generation.- Verifying OWL and ORL Ontologies in PVS.- Verification.- Symbolic and Parametric Model Checking of Discrete-Time Markov Chains.- Verifying Linear Duration Constraints of Timed Automata.- Idempotent Relations in Isabelle/HOL.- Program Verification Using Automatic Generation of Invariants,.- Theories of Programming and Programming Languages.- Random Generators for Dependent Types.- A Proof of Weak Termination Providing the Right Way to Terminate.- Nelson-Oppen, Shostak and the ExtendedCanonizer: A Family Picture with a Newborn.- Real Time Reactive Programming in Lucid Enriched with Contexts.- Revision Programs with Explicit Negation.- Real-Time and Co-design.- An Algebraic Approach for Codesign.- Duration Calculus: A Real-Time Semantic for B.- An Algebra of Petri Nets with Arc-Based Time Restrictions.- A Calculus for Shapes in Time and Space.- A Framework for Specification and Validation of Real-Time Systems Using Circus Actions.- Automata Theory and Logics.- Switched Probabilistic I/O Automata.- Decomposing Controllers into Non-conflicting Distributed Controllers.- Reasoning About Co–Büchi Tree Automata.- Foundations for the Run-Time Monitoring of Reactive Systems – Fundamentals of the MaC Language.- Tutorials at ICTAC 2004.- A Summary of the Tutorials at ICTAC 2004.