Invited Speakers -- A Rewriting Logic Sampler -- Codes and Length-Increasing Transitive Binary Relations -- Languages and Process Calculi for Network Aware Programming – Short Summary - -- Stochastic Analysis of Graph Transformation Systems: A Case Study in P2P Networks -- Component-Based Software Engineering -- Formal Languages -- Outfix-Free Regular Languages and Prime Outfix-Free Decomposition -- Solving First Order Formulae of Pseudo-Regular Theory -- Splicing Array Grammar Systems -- Computer Science Logics -- Compositionality of Fixpoint Logic with Chop -- An SLD-Resolution Calculus for Basic Serial Multimodal Logics -- Upside-Down Transformation in SOL/Connection Tableaux and Its Application -- Program Construction -- On the Stability Semantics of Combinational Programs -- Generating C Code from LOGS Specifications -- Formalizing the Debugging Process in Haskell -- Finding Resource Bounds in the Presence of Explicit Deallocation -- Real-Time Systems -- The Timer Cascade: Functional Modelling and Real Time Calculi -- A Robust Interpretation of Duration Calculus -- Symbolic Model Checking of Finite Precision Timed Automata -- Concurrency and Refinement -- Covarieties of Coalgebras: Comonads and Coequations -- Linking Theories of Concurrency -- On Cool Congruence Formats for Weak Bisimulations -- Externalized and Internalized Notions of Behavioral Refinement -- Software Security -- Information Flow Is Linear Refinement of Constancy -- On Typing Information Flow -- Representation and Reasoning on RBAC: A Description Logic Approach -- Revisiting Failure Detection and Consensus in Omission Failure Environments -- Quantitative Logics -- Congruences and Bisimulations for Continuous-Time Stochastic Logic -- A Logic for Quantum Circuits and Protocols -- Quantitative Temporal Logic Mechanized in HOL -- Weak Stochastic Bisimulation for Non-markovian Processes -- Object-Orientation and Component Systems -- On Refinement of Software Architectures -- POST: A Case Study for an Incremental Development in rCOS -- Implementing Application-Specific Object-Oriented Theories in HOL -- Constructing Open Systems via Consistent Components -- Model-Checking and Algorithms -- A Sub-quadratic Algorithm for Conjunctive and Disjunctive Boolean Equation Systems -- Using Fairness Constraints in Process-Algebraic Verification -- Maximum Marking Problems with Accumulative Weight Functions -- Applied Logics and Computing Theory -- Toward an Abstract Computer Virology -- On Superposition-Based Satisfiability Procedures and Their Combination -- Tutorials at ICTAC 2005 -- A Summary of the Tutorials at ICTAC 2005.