Elias Pimenidis

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— Web Services, due to their integration potential, are being enthusiastically utilized for joining business processes in business to business (B2B) transactions. However, aiming at spontaneously integrating services from different providers in ensuring at offering a user the best possible experience, Web Services face considerable challenges in(More)
Evaluating existing initiatives for developing electronic government (e-government) in addition to identifying main challenges can provide valuable learning points in contributing towards efficient and effective implementation of e-government projects. The digital divide, issues of cyber security, privacy and primarily trust have been identified as the main(More)
London Plan is the London mayor's Spatial Development Strategy. This strategic long-term plan comprises of proposals for different aspects of change within the London boundary. Furthermore, the proposals include chapters outlining adjustments in each facet. Policy 4A.2 reflects the Climate Change Mitigation scheme. Some consultations and research works have(More)
Directed fuzzy hypergraphs are introduced as a generalization of both crisp directed hypergraphs and directed fuzzy graphs. It is proved that the set of all directed fuzzy hypergraphs can be structured into a magmoid with operations graph composition and disjoint union. In this framework a notion of syntactic recognition inside magmoids is defined. The(More)
The security of a biometric information system depends partially on the ability of the biometric information sensor to authenticate itself securely to the processing centre it usually interacts with, thus ensuring that the securely transmitted biometric data has not been constructed by an attacker. The biometric sensors of a biometric information system are(More)
Electronic Government applications have been the focus of hundreds of local and national government administrations all over the world during the past decade. The emphasis of most of these applications lies in their effort to improve the experience of the user in interacting with public administration services and to minimise waiting times in completing(More)
The Transaction Internet Protocol (TIP) aims to facilitate e-commerce by enforcing atomicity guarantees in transactions distributed between several autonomous transaction processing systems. In this work, the authors explore a holiday booking scenario in which a customer is protected by the TIP; in such a way as to prevent ending up with a hotel reservation(More)