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Chapter and Conference Paper
A Formal Analysis of the Global Sequence Protocol
The Global Sequence Protocol (GSP) is an operational model for replicated data stores, in which updates propagate asynchronously. We introduce the GSP-calculus as a formal model for GSP. We give a formal accou...
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Chapter and Conference Paper
From Hierarchical BIP to Petri Calculus
We focus on Hierarchical BIP, an extension of Joseph Sifakis et al’s BIP component framework, to provide a semantics-preserving, compositional encoding in the Petri calculus, a recently proposed algebra of sta...
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Chapter and Conference Paper
Resolving Non-determinism in Choreographies
Resolving non-deterministic choices of choreographies is a crucial task. We introduce a novel notion of realisability for choreographies –called whole-spectrum implementation– that rules out deterministic impleme...
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Chapter and Conference Paper
On the Behaviour of General-Purpose Applications on Cloud Storages
Managing data over cloud infrastructures raises novel challenges with respect to existing and well studied approaches such as ACID and long running transactions. One of the main requirements is to provide avai...
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Chapter and Conference Paper
Connector Algebras, Petri Nets, and BIP
In the area of component-based software architectures, the term connector has been coined to denote an entity (e.g. the communication network, middleware or infrastructure) that regulates the interaction of indep...
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Chapter and Conference Paper
A Connector Algebra for P/T Nets Interactions
A quite flourishing research thread in the recent literature on component-based system is concerned with the algebraic properties of various kinds of connectors for defining well-engineered systems. In a recen...
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Chapter and Conference Paper
Abstract Processes in Orchestration Languages
Orchestrators are descriptions at implementation level and may contain sensitive information that should be kept private. Consequently, orchestration languages come equipped with a notion of abstract processes, w...
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Chapter and Conference Paper
Event Structure Semantics for Nominal Calculi
Event structures have been used for giving true concurrent semantics to languages and models of concurrency such as CCS, Petri nets and graph grammars. Although certain nominal calculi have been modeled with g...
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Chapter and Conference Paper
Comparing Two Approaches to Compensable Flow Composition
Web services composition is an emerging paradigm for the integration of long running business processes, attracting the interest of both Industry, in terms of XML-based standards for business description, and ...