1,721,659 research outputs found
Weaving Business Processes and Rules: a Petri Net Approach
No full textThe emerging service-oriented computing paradigm advocates building distributed information systems by chaining reusable services instead of by programming from scratch. To do so, not only business processes, but also business rules, policies and constraints need to be encoded in a process language such as Web Services Business Process Execution Language (WS-BPEL). Unfortunately, the intermixing of business processes and rules in a single process weakens the modularity and adaptability of the systems. In this paper, we propose a formal approach to model the weaving of business processes and rules, following the aspect-oriented principle. In particular, we use Predicate/Transition (PrT) nets to model business processes and business rules, and then weave them into a coherent PrT net. The resulting woven nets are ready for analysing system properties and simulating system behaviour.Jian Yu, Quan Z. Sheng, Paolo Falcarin, and Maurizio Morisi
Self-Serv: a platform for rapid composition of web services in a peer-to-peer environment
No full textQuan Z. Sheng, Boualem Benatallah, Marlon Dumas and Eileen Oi-Yan Ma
Introduction to special issue on context-aware web services for the future internet
No full textQuan Z. Sheng, Schahram Dustda
The Self-Serv environment for Web services composition
Get PDFCopyright © 2003 IEEESelf-Serv aims to enable the declarative composition of new services from existing ones, the multiattribute dynamic selection of services within a composition, and peer-to-peer orchestration of composite service executions. Self-Serv adopts the principle that every service, whether elementary or composite, should provide a programmatic interface based on SOAP and the Web Service Definition Language. This does not exclude the possibility of integrating legacy applications, such as those written in CORBA, into the service's business logic. To integrate such applications, however, first requires the development of appropriate adapters. The paper considers how the mechanism for composing services in Self-Serv is based on two major concepts: the composite service and the service container.Boualem Benatallah and Quan Z. Sheng; Marlon Duma
User-driven RFID applications and challenges
Get PDFAikaterini Mitrokotsa, Quan Z. Sheng, Zakaria Maama
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
A P2P implementation for the high availability of web services
Get PDFZakaria Maamar, Mohamed Sellami, Samir Tata and Quan Z. Shenghttp://www.pubzone.org/dblp/conf/iceis/MaamarSTS0
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