In wireless sensor networks (WSNs), nodes have very limited power due to hardware constraints. Packet losses and retransmissions resulting from congestion, cost precious energy and shorten the lifetime of sensor nodes. ...

Advances in the fields of Machine Learning (ML), especially in deep learning, computer vision and computer graphics boosted research in many areas. To this end, and in the best of our knowledge, there has not been any work ...

The Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) emerged in late 2019 and is the causative agent of the Coronavirus Disease 2019 (COVID-19). Since its emergence it has led to a global pandemic with devastating ...

Climate change and desertification have become topics of broad interest, as their consequences are currently being experienced, and future projections investigate their prolonged effects. Desertification is primarily ...

In this thesis we propose a novel power based algorithm for switching between ptp and ptm in order to deliver MBMS content with minimum power consumption. Currently tra-ditional technique of UE counting uses only a predefined ...

In this thesis graph theoretic techniques are adopted for addressing the network survivability issue of disjoint paths selection. The evaluation was conducted after the implementation of a solver that produces a solution ...

One of wireless sensor networks’ challenging issues is the congestion control problem. While a lot of attention has been given to rate reduction (Traffic Control) methods to avoid congestion, a new approach emerged. Resource ...

Ο τομέας της ψηφιακής υγείας μεταμορφώνει την υγειονομική περίθαλψη, προσφέροντας αυξημένη προσβασιμότητα, ευκολία και εξατομίκευση της περίθαλψης. Στο πλαίσιο αυτό, η παρούσα διατριβή παρουσιάζει μια επέκταση του ...

Databases are the main component of modern systems. We may find Database Management Systems (DBMS) in the backend of many software systems, such as Enterprise Resource Systems (ERPs), websites, accounting systems, scientific ...