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U. M. Mbanaso, G. S. Cooper, Y. Rezgui, M. Wetherill, S. C. Boddy

Secure dynamic web services composition in the context of construction e-purchasing

Abstract: Service-Oriented Architectures based on Web Services are promising to revolutionize the implementation of open and dynamic transactions in many industries, including construction. However, the application of the technol-ogy is raising new security and privacy challenges. One aspect to be addressed in dealing with the security issues is user authorization. Traditionally, authorization systems tend to be unilateral in the sense that the service provider as-signs the access rights and makes the authorization decision, and there is no negotiation between the client and the ser-vice provider. Trust negotiation builds on this through the gradual release of remotely issued credentials to service providers. However, this is not sufficient where strict privacy governance is a requirement, particularly where the communicating parties have no pre-existing direct trust relationship. This paper addresses some of the security issues in Web Services composition in the context of construction e-purchasing. The framework presented in this paper allows Service Providers and Service clients to dynamically exchange security requirements and capabilities to determine how they can share their e-resources. We describe some applications of these concepts and show how they can be integrated into a Web Services environment for construction epurchasing.

Keywords: SOA, open and dynamic transactions, authorization decision, access rights, trust relationship

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Full text: content.pdf (309,390 bytes) (available to registered users only)

Series: w78:2007 (browse)
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Wetherill M, Rezgui Y, Lima C, Zarli A

Knowledge management for the construction industry: the e-cognos project

Abstract: The paper focuses upon the contribution which adequate use of the latest development in Information and Communication Technologies can make to the enhancement, development and improvement of professional expertise in the Construction domain. The paper is based on the e-COGNOS project, which aims at specifying and developing an open model-based infrastructure and a set of tools that promote consistent knowledge management within collaborative construction environments. The specified solution emerged from a comprehensive analysis of the business and information / knowledge management practices of the project end-users, and makes use of a Construction specific ontology that is used as a basis for specifying adaptive mechanisms that can organise documents according to their contents and interdependencies, while maintaining their overall consistency. The e-Cognos web-based infrastructure will include services, which allow the creation, capture, indexing, retrieval and dissemination of knowledge. It also promotes the integration of third-party services, including proprietary tools. The e-COGNOS approach will be tested and evaluated through a series of field trials. This will be followed by the delivery of business recommendations regarding the deployment of e-COGNOS in the construction sector. The research is ongoing and supported by the European Commission under the IST programme - Key Action II.

Keywords: knowledge management, construction industry, ontology, web services

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Full text: http://www.itcon.org/2002/12 (available to registered users only)

Series: itcon:2002 (browse)
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Yacine Rezgui, Stefan Boddy, Matt Wetherill, Grahame Cooper

Sustainability Informed Decision Making In The Construction Sector

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Full text: content.pdf (625,938 bytes) (available to registered users only)

Series: w78:2006 (browse)
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