Τμήμα Πληροφορικής / Department of Computer Science: Recent submissions
Now showing items 141-160 of 1952
-
Article
Broadening Understanding on Managing the Communication Infrastructure in Vehicular Networks: Customizing the Coverage Using the Delta Network
(2018)Over the past few decades, the growth of the urban population has been remarkable. Nowadays, 50% of the population lives in urban areas, and forecasts point that by 2050 this number will reach 70%. Today, 64% of all travel ...
-
Article
A novel communication paradigm for high capacity and security via programmable indoor wireless environments in next generation wireless systems
(2019)Wireless communication environments comprise passive objects that cause performance degradation and eavesdropping concerns due to anomalous scattering. This paper proposes a new paradigm, where scattering becomes ...
-
Conference Object
Selection of UE-based Virtual Small Cell Base Stations using Affinity Propagation Clustering
(2018)5G will require a number of Key Technological Components to meet its very ambitious goals, including Heterogeneous Networks a nd Small Cells. The Dense Deployme nt of Small Cell Base Stations (SBSs) will play a major role ...
-
Article
A New Wireless Communication Paradigm through Software-Controlled Metasurfaces
(2018)Electromagnetic waves undergo multiple uncontrollable alterations as they propagate within a wireless environment. Free space path loss, signal absorption, as well as reflections, refractions, and diffractions caused by ...
-
Conference Object
Realizing Wireless Communication Through Software-Defined HyperSurface Environments
(2018)Wireless communication environments are unaware of the ongoing data exchange efforts within them. Moreover, their effect on the communication quality is intractable in all but the simplest cases. The present work proposes ...
-
Conference Object
Stochastically resonant spectrum sensing for white space communications: Dynamic spectrum access and intelligent radios and networks
(2018)This paper proposes and investigates Stochastically Resonant Spectrum Sensing (SRSS) in order to expedite Dynamic Spectrum Access and TV White Space (TVWS) communications. SRSS adds noise to a signal in order to enhance ...
-
Article
Using any surface to realize a new paradigm for wireless communications
(2018)Programmable wireless environments use unique customizable software processes rather than traditional rigid channel models.
-
Article
A New Method for Diaphragmatic Maximum Relaxation Rate Ultrasonographic Measurement in the Assessment of Patients With Diaphragmatic Dysfunction
(2018)Measurements of ultrasound diaphragmatic motion, amplitude, force, and velocity of contraction may provide important and essential information about diaphragmatic fatigue, weakness, or paralysis. In this paper, we propose ...
-
Conference Object
GDPR Compliance in the Design of the INFORM e-Learning Platform: a Case Study
(2019)The European Union General Data Protection Regulation (GDPR) governs personal data processing, aiming to ensure privacy in all systems handling such data. All systems that process personal data, including software systems ...
-
Article
Modeling Probabilistic Flooding in VANETs for Optimal Rebroadcast Probabilities
(2019)Probabilistic flooding is commonly considered in vehicular ad-hoc networks (VANETs) to alleviate the celebrated broadcast storm problem. Heuristics and simulations have so far proved to be an efficient way with which to ...
-
Conference Object
Controlling Reversibility in Reversing Petri Nets with Application to Wireless Communications
(Springer International Publishing, 2019)Petri nets are a formalism for modelling and reasoning about the behaviour of distributed systems. Recently, a reversible approach to Petri nets, Reversing Petri Nets (RPN), has been proposed, allowing transitions to be ...
-
Conference Object
A Formal Modeling Scheme for Analyzing a Software System Design against the GDPR
(SCITEPRESS - Science and Technology Publications, Lda, 2019)Since the adoption of the EU General Data Protection Regulation (GDPR) in May 2018, designing software systems that conform to the GDPR principles has become vital. Modeling languages can be a facilitator for this process, ...
-
Article
Real-Time Adaptation to Time-Varying Constraints for Medical Video Communications
(2018)The wider adoption of mobile Health video communication systems in standard clinical practice requires real-time control to provide for adequate levels of clinical video quality to support reliable diagnosis. The latter ...
-
Article
Quantitative MRI Brain Studies in Mild Cognitive Impairment and Alzheimer's Disease: A Methodological Review
(2018)Classifying and predicting Alzheimer's disease (AD) in individuals with memory disorders through clinical and psychometric assessment is challenging, especially in mild cognitive impairment (MCI) subjects. Quantitative ...
-
Conference Object
Hippocampal and entorhinal cortex volume changes in Alzheimer's disease patients and mild cognitive impairment subjects
(2018)Hippocampal and entorhinal cortex as scanned in Magnetic Resonance Imaging (MRI), are two of the most commonly used Regions of Interest (ROIs) for the assessment of Alzheimer's disease (AD). Both structures are used for ...
-
Article
Distributed Antenna Selection for Massive MIMO Using Reversing Petri Nets
(2019)Distributed antenna selection for distributed massive multiple input multiple output (MIMO) communication systems reduces computational complexity compared to centralized approaches, and provides high fault tolerance while ...
-
Book
Handbook of Speckle Filtering and Tracking in Cardiovascular Ultrasound Imaging and Video
(IET Digital Library, 2018)Ultrasound imaging technology has experienced a dramatic change in the last 30 years. Because of its non-invasive nature and continuing improvements in image quality, ultrasound imaging is progressively achieving an important ...
-
Conference Object
Reversing Computations Modelled by Coloured Petri Nets
(CEUR-WS.org, 2018)Reversible computation is an unconventional form of computing where any sequence of performed operations can be executed in reverse order at any point during computation. It has recently been attracting increasing attention ...
-
Conference Object
Reversible Computation in Petri Nets
(Springer International Publishing, 2018)Reversible computation is an unconventional form of computing where any executed sequence of operations can be executed in reverse at any point during computation. In this paper we propose a reversible approach to Petri ...
-
Conference Object
From Natural Language to Argumentation and Cognitive Systems
(2018)This paper reports on a program for the development of cognitive systems based on user specifications expressed in Natural Language in the form of high-level guidelines for the desired behaviour of those systems. Language ...