Anonymous electronic payment systems are regarded as essential for the protection of the privacy of consumers participating in electronic transactions. In this paper, we present a...
In this paper, we suggest that it should be possible to come closer to the Semantic Web goals by enhancing the ontology paradigm and, in particular, by supplementing the ‘tradit...
For mobile agents to be effective in practice, they have to be securely and efficiently deployed. In this paper, we propose and discuss several route structures and methods for mo...
We present a method to index objects moving on the plane in order to efficiently answer range queries about their position in the future. This problem is motivated by real-life a...
Dimitris Papadopoulos, George Kollios, Dimitrios G...