<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Service discovery and negotiation with COWS"^^ . "To provide formal foundations to current (web) services technologies, we put forward using COWS, a process calculus for specifying, combining and analysing services, as a uniform formalism for modelling all the relevant phases of the life cycle of service-oriented applications, such as publication, discovery, negotiation, deployment and execution. In this paper, we show that constraints and operations on them can be smoothly incorporated in COWS, and propose a disciplined way to model multisets of constraints and to manipulate them through appropriate interaction protocols. Therefore, we demonstrate that also QoS requirement specifications and SLA achievements, and the phases of dynamic service discovery and negotiation can be comfortably modelled in COWS. We illustrate our approach through a scenario for a service-based web hosting provider."^^ . "2008" . . . "200" . "3" . . "Elsevier"^^ . . . "Electronic Notes in Theoretical Computer Science"^^ . . . "15710661" . . . . . . . . . . . . . "Francesco"^^ . "Tiezzi"^^ . "Francesco Tiezzi"^^ . . "Rosario"^^ . "Pugliese"^^ . "Rosario Pugliese"^^ . . "Alessandro"^^ . "Lapadula"^^ . "Alessandro Lapadula"^^ . . . . . . "Service discovery and negotiation with COWS (PDF)"^^ . . . . . . . . . . . "cows_sla_2008d.pdf"^^ . . . "Service discovery and negotiation with COWS (Image (JPEG))"^^ . . . . . . "preview.jpg"^^ . . . "Service discovery and negotiation with COWS (Indexer Terms)"^^ . . . . . . "indexcodes.txt"^^ . . . "Service discovery and negotiation with COWS (PDF)"^^ . . . . . . "Lapadula_Pugliese_Tiezzi.pdf"^^ . . . "Service discovery and negotiation with COWS (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Service discovery and negotiation with COWS (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Service discovery and negotiation with COWS (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Service discovery and negotiation with COWS (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #414 \n\nService discovery and negotiation with COWS\n\n" . "text/html" . . . "QA75 Electronic computers. Computer science"@en . .