24,184 research outputs found
Personalized service creation and provision for the mobile web
No full textThe convergence of telecom networks and the Internet is fostering the emergence of environments where Web services are available to mobile users. The variability in computing resources, display terminal, and communication channel require intelligent support on personalized delivery of relevant data and services to mobile users. Personalized service provisioning presents several research challenges on context information management, service creation, and inherent limitations of mobile devices. In this chapter, we describe a novel framework that supports weaving context information and services for personalized service creation and execution. By leveraging technologies on Web services, agents, and publish/subscribe systems, our framework enables an effective, user-centric access of integrated services over the mobile Web environments. This chapter overviews the design, architecture, and implementation of the framework.Quan Z. Sheng, Jian Yu, José M. del Alamo and Paolo Falcari
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
A user-centric mobile service creation approach converging telco and IT services
No full textWhile new competitors are threatening the traditional business models of Telecommunications operators by providing their services directly to the customer, usercentric service creation paradigm brings new opportunities for operators to deliver diverse, attractive, and profitable services directly to the end-user. This paper discusses the service creation model, architecture and implementation in the European Union sponsored research project OPUCE (Open Platform for User-Centric Service Creation and Execution), which aims at enabling end-users to use their smart mobile devices for both creating and consuming personalized services.Jian Yu, Paolo Falcarin, José M. del Álamo, Juergen Sienel, Quan Z. Sheng, and José F. Meji
The Self-Serv environment for Web services composition
No full textCopyright © 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
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
User-centric ambient information systems and applications
No full textQuan Z. Sheng, Elhadi M. Shakshuki, Jiangang M
Elastic anomalies associated with transformation sequences in perovskites: II. The strontium zirconate–titanate Sr(Zr,Ti)O<sub>3</sub> solid solution series
No full textThe sequence of phase transitions due to octahedral tilting across the Sr(Zr,Ti)O3 solid solution series has been investigated by resonant ultrasound spectroscopy at high and low temperatures using ceramic samples. The elastic behaviour associated with phase transitions as a function of composition in Sr(Zr,Ti)O3 at room temperature is proposed to be analogous to that as a function of temperature in SrZrO3, with the Pnma \leftrightarrow Imma transition at SrZr0.57Ti0.43O3, Imma \leftrightarrow I4/mcm at SrZr0.35Ti0.65O3, and I4/mcm \leftrightarrow Pm\bar {3}m at SrZr0.05Ti0.95O3. Changes in elastic constants and acoustic dissipation with temperature have been analysed for samples across the compositional range. The intermediate phases, I4/mcm and what is assumed to be Imma, appear to have stability fields across the full compositional range and both show large dissipation effects, most probably due to twin wall mobility. In contrast, the Zr-rich Pnma phase, which should contain transformation twin walls, is an unexpectedly stiff and non-dissipating material, similar to the high temperature and/or Ti-rich Pm\bar {3}m phase. In the case of Pnma, this is attributed to coupling between the two order parameters, which could impede relaxation responses to an applied stress. The Pm\bar {3}m structure is a classically stiff cubic perovskite and no transformation-related dissipation processes are expected
Erratum: Noninvasive Measurements and FEM Analyses for Estimating the Rotor Bar-Lamination Contact Resistance (IEEE Trans. Ind. Appl. (2021) 57: 1 (208-217) DOI: 10.1109/tia.2020.3028347)
No full textIn [1], the correct author affiliations should read: Z. Gmyrek is with the Institute of Mechatronics and Information Systems, Lodz University of Technology, Lodz 90-924, Poland (e-mail: [email protected]). S. Vaschetto, M. Ahmadi Darmani, and A. Cavagnino are with the Politecnico di Torino, Dipartimento Energia, Turin 10129, Italy (e-mail: [email protected]; [email protected]; andrea. [email protected])
Managing things in an ambient space
No full textSupervised by: Yacine Atif, Quan Z. Sheng, and Zakaria Maamar Also published as a book chapter: International Conference on Service-Oriented Computing, held at Paphos, Cyprus, December 5-8, 2011 / G. Pallis, M. Jmaiel, A. Charfi, S. Graupner, Y. Karabulut, S. Guinea, F. Rosenberg, Q. Z. Sheng, C. Pautasso, S. B. Mokhtar (eds.): pp. 226-232We are surrounded by inanimate things that have inherent information. Unfortunately, the vast majority of applications built to use this information are built in ad-hoc manner, introducing issues with maintainability, share-ability and reusability. We discuss the architecture of Ambient Space Manager (ASM), a system to explore and control things within a context-aware ambient space. We define the context variables of such things to be the Capability, Location, Operations and QoS. Here we also elaborate the Capability context based on the atomic capabilities of things that enable them to offer contextual services.Sujith Samuel Mathe
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