Antonios Andreatos

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A computer-aided assessment system is presented that has been designed to produce and deliver tests to the Hellenic Air Force Academy students and assess their performance. The system is called e-Xaminer and is intended for use in both undergraduate courses and distance learning post-graduate programs of the Academy. The e-Xaminer uses meta-language(More)
Simulation is a powerful tool for understanding and assessing the operation of systems, as well as, natural phenomena. At the Hellenic Air Force Academy a Simulation course is offered to engineering cadets during the 2 nd year of studies; it is a fundamental and prerequisite course for future specialisation courses. The ability to model systems --either(More)
This paper proposes an integrated approach for e-commerce business modeling and system design, based on the Reference Model of the Open Distributed Processing (RM/ODP) standard. Initially, the main concerns of e-commerce with respect to business modeling are presented; next, the requirements induced by this modeling and the generic e-commerce system(More)
In this paper we present some important factors affecting peer assessment of student presentations in a graduate course. The course was titled “Advanced Information Systems” and was offered during the autumn semester of the academic year 2015-16 by the University of Piraeus. The sixty-one postgraduate students taking the course participated in this(More)
In this paper a connection establishment and release mechanism of a full duplex communication protocol is specified. The specification is written in SDL graphical [GR] representation. The protocol phases described here are destined for unreliable and noisy channels. In order to cope with such an environment, the following measures are taken: 1. Connection(More)
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