Vassilis Triantafillou

Learn More
The growing need for communication, visualization and organization technologies in the field of e-learning environments has led to the application of virtual reality and the use of collaborative virtual environments. This paper presents a system architecture to support such environments, defined by user needs and using state of the
The growing need for communication, visualization and organization technologies in the field of e-learning environments has led to the application of virtual reality and the use of collaborative virtual environments. This paper presents a system architecture to support such environments, defined by user needs and using state of the art technologies.
In this paper we present a Web-based, database oriented CSCW system to support information dispersal between di€erent Local Government authorities (Region, Prefecture and Municipalities) and the citizens. The system is implemented around the `shared workspace' notion, a group of directories and ®les controlled by the users of the workspace. Intranet and(More)
Multistage Interconnection Networks (MINs) with crossbar switches have been used to interconnect processors and memory modules in parallel multiprocessor systems. They also play an increasingly important role in the development of ATM networks. In this paper we analyze the general case of MINs, made of k k switches with nite, in nite or zero length bu ers(More)
We analyze here a pure greedy hot-potato routing strategy on a two-dimensional mesh of n nodes. We speci cally study the case of n packets, originating one per node, to be delivered at random uniform destinations. Each packet attempts to follow the shortest path leading rst to the destination row/column (whichever is closest) and then to the actual(More)
This paper presents details of a web-based, database-oriented ‘‘electronic voting service’’. Rapid world-wide growth in Internet and Web use has stimulated many initiatives aimed at applying information and communication innovations to create what has been called a ‘‘digital’’ or ‘‘electronic democracy’’. Internet voting is already widespread in a variety(More)
Dynacargo, a research project under implementation, aims to change supply chain management, as the hauled goods are at the center of attention instead of vehicles, as in traditional management approaches. At the same time Dynacargo manages both delivery and collection cycles. Dynacargo aims at developing a near real-time monitoring system that monitors and(More)
2 Spyridon Kastaniotis is an undergraduate student at the CEID and works as a computer engineer at CTI 3 Dr. Vassilis Triantafylloy is a senior researcher at CTI. AbstractThis paper presents a Web-based, database-oriented set of applications, namely “Public Information” and “Electronic Voting”, to support information services (exchange and sharing) between(More)
In this paper we present a WWW-based approach for the development of a system supporting information sharing within an organizational environment. The system developed is exploiting Intranet and Extranet technologies enabling asynchronous and synchronous cooperation, manipulation of information from heterogeneous sources, security and easy administration,(More)
LTE cell planning requires special constraints in case of smart grid applications. Cell planners decide about the cell coverage mostly based on worst radio conditions (cell edge) acceptable level of minimum throughput, but not on delay constraints which are of extreme importance for smart grid solutions. In this paper a semi-analytical approach for uplink(More)