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Peter D. Mosses and David A. Watt,
editors.
Proceedings of the Second International Workshop on Action
Semantics, AS '99, (Amsterdam, The Netherlands, March 21, 1999), May
1999.
iv+172 pp.
Abstract: Action Semantics is a practical framework for formal
semantic description of programming languages. Since its appearance in 1992,
action semantics has been used to describe major languages such as Pascal,
SML, ANDF, and Java, and various tools for processing action-semantic
descriptions have been developed. Recently, the close relationship between
action semantics and monadic approaches to denotational semantics has been
established.
AS'99, the 2nd International Workshop on Action
Semantics, was held as a one-day satellite event of ETAPS'99 in Amsterdam. As
can be seen from the workshop programme and from the contributed papers
collected in these proceedings, much interesting work was presented and
discussed during the workshop, focussing on tool support for Action
Semantics, recent action-semantic descriptions, theoretical foundations, and
prospects for the future of Action Semantics.
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Hans Hüttel, Josva Kleist, Uwe
Nestmann, and António Ravara, editors.
Proceedings of the Workshop on Semantics of Objects As
Processes, SOAP '99, (Lisbon, Portugal, June 15, 1999), May 1999.
iv+64 pp.
Abstract: The '99 edition of SOAP, taking place as a satellite
workshop of ECOOP '99, is composed of two complementary thematic building
blocks. The first is addressing the motto `Semantics of Objects As
Processes' literally in that objects are represented as a derived concept
within a framework of processes; we are happy to welcome Oscar Nierstrasz,
Markus Lumpe, and Jean-Guy Schneider as invited speakers to present the work
they have been accomplishing in this area|starting out from a mobile process
calculus|and to let us learn about their conclusions. This session is rounded
up by a verification approach using a temporal logic as a target setting for,
in this case, UML-style objects. The second building block, divided into a
session on behavioral subtyping and another one on behavioral typing, is more
to be seen as an adaptation of the process-theoretic viewpoint to some
object-oriented framework. While the typed  -calculus is a firm
ground to study typing for object-oriented languages, the typing of
concurrent objects poses particular problems due to synchronization
constraints. A static notion of typing is not powerful enough to capture
dynamic properties of objects' behavior, like non-uniform service
availability. Concurrency theory inspires dynamic notions of typing and
subtyping, and the works that constitute this block of SOAP '99 exemplify the
research currently being done in the field.
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Olivier Danvy, editor.
ACM SIGPLAN Workshop on Partial Evaluation and Semantics-Based
Program Manipulation, PEPM '99, (San Antonio, Texas, USA, January
22-23, 1999), January 1999.
Abstract: The
PEPM '99
workshop brought
together researchers working in the areas of semantics-based program
manipulation and partial evaluation. The workshop focused on techniques and
supporting theory for the analysis and manipulation of programs.
PEPM '99 took place on January 22nd and 23rd, 1999, following POPL '99. It
consisted of 13 contributed papers, as well as three invited talks by Alan
Bawden, Charles Consel, and Olin Shivers. The present BRICS technical report
(distributed at the workshop) served as an informal proceedings. The 13
papers were selected among 24 submissions. These submissions came from all
over the world: US, UK, France, Germany, Denmark, Spain, Australia, New
Zealand, Japan, and Singapore, incidentally all from academia. 85 reviews
were generated (3.5 per submission).
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