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Full Description
This volume contains the proceedings of the 20th Conference on Concurrency Theory (CONCUR 2009), held in Bologna, September 1-4, 2009. The purpose of the CONCUR conference is to bring together researchers, developers, and s- dentsinordertoadvancethetheoryofconcurrencyandpromoteitsapplications. This year the CONCUR conference was in its 20th edition, and to celebrate 20 years of CONCUR, the conference program included a special session organized by the IFIP Working Groups 1.8 "Concurrency Theory" and 2.2 "Formal - scriptionofProgrammingConcepts"aswellas aninvitedlecturegivenby Robin Milner, one of the fathers of the concurrency theory research area. This edition of the conference attracted 129 submissions. We wish to thank all their authors for their interest in CONCUR 2009. After careful discussions, the Program Committee selected 37 papers for presentation at the conference. Each of them was accurately refereed by at least three reviewers (four reviewers for papers co-authored by members of the Program Committee), who delivered detailedandinsightfulcommentsandsuggestions.TheconferenceChairswarmly thank all the members of the Program Committee and all their sub-referees for the excellent support they gave, as well as for the friendly and constructive discussions. We would also like to thank the authors for having revised their papers to address the comments and suggestions by the referees. The conference program was enriched by the outstanding invited talks by Martin Abadi, Christel Baier, Corrado Priami and, as mentioned above, Robin Milner.
Contents
Invited Papers.- Perspectives on Transactional Memory.- The Effect of Tossing Coins in Omega-Automata.- Bigraphical Categories.- BlenX Static and Dynamic Semantics.- Contributed Papers.- Flow Policy Awareness for Distributed Mobile Code.- Volume and Entropy of Regular Timed Languages: Discretization Approach.- A Logical Interpretation of the ?-Calculus into the ?-Calculus, Preserving Spine Reduction and Types.- Encoding Asynchronous Interactions Using Open Petri Nets.- Distributed Asynchronous Automata.- Algebra for Infinite Forests with an Application to the Temporal Logic EF.- Deriving Syntax and Axioms for Quantitative Regular Behaviours.- Weighted Bisimulation in Linear Algebraic Form.- A Logic-Based Framework for Reasoning about Composite Data Structures.- Measuring Permissivity in Finite Games.- Contracts for Mobile Processes.- Power of Randomization in Automata on Infinite Strings.- Probabilistic Weighted Automata.- Partially-Commutative Context-Free Processes.- Testing Finitary Probabilistic Processes.- A Demonic Approach to Information in Probabilistic Systems.- HYPE: A Process Algebra for Compositional Flows and Emergent Behaviour.- Variable Binding, Symmetric Monoidal Closed Theories, and Bigraphs.- Partial Order Reduction for Probabilistic Systems: A Revision for Distributed Schedulers.- Model-Checking Games for Fixpoint Logics with Partial Order Models.- Reachability in Succinct and Parametric One-Counter Automata.- Winning Regions of Pushdown Parity Games: A Saturation Method.- Concurrent Kleene Algebra.- Concavely-Priced Probabilistic Timed Automata.- Compositional Control Synthesis for Partially Observable Systems.- Howe's Method for Calculi with Passivation.- On the Relationship between ?-Calculus and Finite Place/Transition Petri Nets.- ModelingRadio Networks.- Time-Bounded Verification.- Secure Enforcement for Global Process Specifications.- On Convergence of Concurrent Systems under Regular Interactions.- Computing Stuttering Simulations.- Weak Time Petri Nets Strike Back!.- A General Testability Theory.- Counterexamples in Probabilistic LTL Model Checking for Markov Chains.- Query-Based Model Checking of Ad Hoc Network Protocols.- Strict Divergence for Probabilistic Timed Automata.
