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Localization in Wireless Sensor Networks has become a significant research challenge, attracting many researchers in the past decade. This paper provides a review of basic techniques and the state-of-the-art approaches for wireless sensors localization. The challenges and future research opportunities are discussed in relation to the design of the collaborative workspaces based on cooperative wireless sensor networks.

The current Web services technologies have not exploited sufficient semantics and approaches to dynamic service-oriented operations in open environments. This paper argues that such operations can be realized through agent-oriented interaction approaches. The key challenge is to develop an integration framework for the two paradigms, agent-and service-oriented, in a way that capitalizes on their individual strengths. This paper proposes the notion of agent-based Web services (AWS). We address several critical issues, including the appropriate architectural framework and the structure of its main elements (agent-based Web services), their meta-model, supporting technologies, integration method, and implementation approach. An integrated development environment for this framework called SOAStudio has been developed and tested by implementing a case study of a reverse auction e-marketplace.

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. Research, 46, 9, pp. 2433Research, 46, 9, pp. -2452Research, 46, 9, pp. , 2008 Real time distributed shop floor scheduling using an agent-based service-oriented architecture Wang, C.; Ghenniwa, H.; Shen, W. International Journal of Productionhttp://irc.nrc-cnrc.gc.ca Real time distributed shop floor scheduling using an agent-based service-oriented architecture NRCC-50323Wang, C.; Ghenniwa, H.; Shen, W. May 2008A version of this document is published in / Une version de ce document se trouve dans: International Journal of Production Research, v. 46, no. 9, 2008Research, v. 46, no. 9, , .pp 2433Research, v. 46, no. 9, -2452 The material in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission. For more information visit http://laws.justice.gc.ca/en/showtdm/cs/C-42 Keyword: Shop floor scheduling, distributed control structure, dynamic distributed scheduling algorithms, agent based service oriented integration. IntroductionGlobalization of markets has driven manufacturing enterprises to shed the security of mass production and shift to a new paradigm, mass customization. An essential goal of this transformation is to respond to market changes in a timely and cost effective manner. As an integral component of manufacturing management, scheduling needs to be effectively integrated with other components of manufacturing systems such as supply chain management, ERP, and shop floor control. Dynamic changes can derive from either outside parties in the market, such as the supply side (representing suppliers), demand side (representing customers) or within the enterprise, such as real-time events from the shop floor. In a real world shop floor environment, it is rarely the case to execute exactly as planned. Operation durations tend to vary, machines break down, raw materials fail to arrive on time, new customer orders appear, others get 1 cancelled, etc. Such disruptions incur higher costs due to missed customer delivery dates, higher work-in-process inventory, and lower resource utilization. To deal with these issues, practical scheduling systems need to be able to effectively reorganize the shop floor production plan and repair or redo the production schedule accordingly. Scheduling systems with the capab...

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A new form of computation is being evolved to include massive number of diverse set of conventional computing systems, sensors, devices, equipments, software and information services and apps. This new form of computing environment is known as the "Internet-of-Things" (IoT). The adoption of IoT is fast and the "things" are becoming integral part of people day-to-day life as well as essential elements in the businesses everyday activities and processes. Open characteristics of IoT environments raises privacy concern as "things" are autonomous with some degree of authority to sharing their capabilities and knowledge to fulfil their individual or collective tasks. As such privacy becomes central and an inherit computational aspect of the "things". The work presented here is based on modelling IoT as Cooperative Distributed Systems (CDS). It proposes a novel approach of analysing and modelling privacy concepts and concerns. Privacy protection is captured as a form of "sensitive information" management at the interaction level. A privacy protection management framework for CDS at the interaction level is proposed. The application of the framework has been demonstrated by extending Contract Net Protocol (CNP) to support privacy protection for CDS.