Stylianos Georgiadis

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INTRODUCTION Many complications of pregnancy and delivery are associated with umbilical cord length. It is important to examine the variation in length, in order to identify normal and abnormal conditions. Moreover, the factors influencing cord growth and development are not precisely known. OBJECTIVE The main objectives were to provide updated reference(More)
The main aim of the present paper is to draw the attention of the readers of this special issue to the modeling issues of sensor networks. The novelty of this investigation is the introduction of servers vacation combined with priority customers for finite-source retrial queues and its application to wireless sensor networks. In this paper we analyze a(More)
We represent the classical Engset-loss model by the stochastic process counting the number of customers in the system. A fluid limit for this process is established for all the possible values of the various parameters of the system, as the number of servers tends to infinity along with the number of sources. Our results are derived through a(More)
During a preliminary survey at the area of an abandoned fertilizer plant, increased levels of radioactivity were measured at places, buildings, constructions and materials. The extent of the contamination was determined and the affected areas were characterized as controlled areas. After the quantitative and qualitative determination of the contaminated(More)
In this paper, we represent the classical Engset-loss model by the congestion process of the system, and establish a fluid limit result for all the possible values of the various parameters. We extend this result to particular cases of finite-source retrial queues. We finally complete this study by presenting several fluid limits for additive functionals of(More)
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