In the past decade, the formal theory of specification,verfication and development of real-time programs has grownfrom work of a few specialized groups to a real "bandwagon".Many eminent research groups have shifted their interests inthis direction. Consequently, research in real-time is nowentering established research areas in formal methods, suchas process algebra, temporal logic, and model checking.This volume contains the proceedings of a workshop dedicatedto the theory of real-time with the purpose of stepping backand viewing the results achieved as well as considering thedirections of ongoing research. The volume gives arepresentative picture of what is going on in the fieldworldwide, presented by eminent, active researchers. Thematerial in the volume was prepared by the authors after theworkshop took place and reflects the results of the workshopdiscussions.

Researchers working on the semantics of programminglanguages came together in The Netherlands in June 1992 fora workshop on Semantics - Foundations and Applications. Thisvolume is based on the meeting and contains materialprepared by the lecturers after the meeting took place. Thevolume includes papers on a wide range of topics in bothfoundationsand applications, including:- Comparative domain theory, category theory, informationsystems,- Concurrency: process algebras, asynchronous communication,action semantics, trace nets, process refinement, concurrentconstraint programming,- Predicate transformers, refinement,weakest preconditions,- Comparative semantics of programming concepts, fullabstraction,- Reasoning about programs: total correctness, epistemiclogic,- Logic programming,- Functional programming: sequentiality, integration withconcurrency, applied structured operational semantics.The workshop was an activity of the project REX (ResearchandEducation in Concurrent Systems) sponsored by theNetherlands NFI (NationaleFaciliteit Informatica)Programme.

In the past decade, the formal theory of specification,verfication and development of real-time programs has grownfrom work of a few specialized groups to a real "bandwagon".Many eminent research groups have shifted their interests inthis direction. Consequently, research in real-time is nowentering established research areas in formal methods, suchas process algebra, temporal logic, and model checking.This volume contains the proceedings of a workshop dedicatedto the theory of real-time with the purpose of stepping backand viewing the results achieved as well as considering thedirections of ongoing research. The volume gives arepresentative picture of what is going on in the fieldworldwide, presented by eminent, active researchers. Thematerial in the volume was prepared by the authors after theworkshop took place and reflects the results of the workshopdiscussions.

Researchers working on the semantics of programminglanguages came together in The Netherlands in June 1992 fora workshop on Semantics - Foundations and Applications. Thisvolume is based on the meeting and contains materialprepared by the lecturers after the meeting took place. Thevolume includes papers on a wide range of topics in bothfoundationsand applications, including:- Comparative domain theory, category theory, informationsystems,- Concurrency: process algebras, asynchronous communication,action semantics, trace nets, process refinement, concurrentconstraint programming,- Predicate transformers, refinement,weakest preconditions,- Comparative semantics of programming concepts, fullabstraction,- Reasoning about programs: total correctness, epistemiclogic,- Logic programming,- Functional programming: sequentiality, integration withconcurrency, applied structured operational semantics.The workshop was an activity of the project REX (ResearchandEducation in Concurrent Systems) sponsored by theNetherlands NFI (NationaleFaciliteit Informatica)Programme.