Ivan Djordjevic

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As members of the Dissertation Committee, we certify that we have read the dis-sertation prepared by Anantharaman Krishnan entitled Signal Processing for Two-Dimensional Magnetic Recording and recommend that it be accepted as fulfilling the dissertation requirement for the Degree of Doctor of Philosophy. Final approval and acceptance of this dissertation is(More)
The rise in practical Virtual Organisations (VOs) requires secure access to data and interactions between their partners. Ad hoc solutions to meet these requirements are possible, but Web services hold out the potential for generic security solutions whose cost can be spread across several short lived dynamic VOs. This paper identifies trust and security(More)
In this paper we describe the demonstration of selected security & contract management capabilities of an early prototype infrastructure enabling dynamic Virtual Organisations for the purpose of providing virtualised services and resources that can be offered on-demand, following a utility computing model, and integrated into aggregated services whose(More)
In this paper we sketch a framework supporting contract enactment within the context of virtual organisation units that are dynamically created in order to achieve a common objective by securely sharing resources, services and information. The framework is built on top of a joint extension of the policy deployment architecture for peer-to-peer communities(More)
Extended Abstract The Internet provides a ubiquitous, standards-based substrate for global communications of all kinds. Rapid advances are now being made in agreeing protocols and machine-processible message/document formats that will soon enable open application-application communication and brings about the prospect of ad hoc integration of systems across(More)
Security enforcement framework is an important aspect of any distributed system. With new requirements imposed by SOA-based business models, adaptive security enforcement on the application level becomes even more important. Our work on the enforcement framework to date has resulted in a comprehensive middleware-based solution leveraging on web services(More)
This paper describes a novel framework for a risk management process involving a model-based approach, developed as the main objective of CORAS (IST-2000 25031). The main motivation for such an approach is to achieve an improved methodology for precise, unambiguous, and efficient risk analysis of security critical systems. There are several benefits from a(More)