Browsing School of Information Sciences by Title

Now showing items 29-48 of 162

  • Content based radiology image retrieval using a fuzzy rule based scalable composite descriptor 

    Chatzichristofis, Savvas A.; Boutalis, Yiannis (Springer Nature, 2009)
    The rapid advances made in the field of radiology, the increased frequency in which oncological diseases appear, as well as the demand for prevailing medical checks, led to the creation of a large database of radiology ...

  • Content based radiology image retrieval using a fuzzy rule based scalable composite descriptor 

    Chatzichristofis, Savvas A.; Boutalis, Yiannis S. (2010)
    The rapid advances made in the field of radiology, the increased frequency in which oncological diseases appear, as well as the demand for regular medical checks, led to the creation of a large database of radiology ...

  • Content-based image retrieval over IEEE 802.11b noisy wireless networks 

    Chatzistavros, Evaggelos; Chatzichristofis, Savvas A.; Zagoris, Konstatinos; Stamatelos, George (Wiley, 2014)
    Mobile devices such as smartphones and tablets are widely used in everyday life to perform a variety of operations, such as e-mail exchange, connection to social media, bank/financial transactions, and so on. Moreover, ...

  • Controlling the Handoff Procedure in an Oil Refinery Environment Using Fuzzy Logic 

    Zinonos, Zinon; Chrysostomou, Chrysostomos; Vassiliou, Vasos (IEEE, 2012)
    Mobility is one of the most important challenges in a wireless sensor system. Usually, continuous connectivity of a Mobile Node (MN) is achieved by supporting handoff from one connection point to another. In order to ...

  • DARP: Divide Areas Algorithm for Optimal Multi-Robot Coverage Path Planning 

    Kapoutsis, Athanasios Ch.; Chatzichristofis, Savvas A.; Kosmatopoulos, Elias B. (Springer, 2017)
    This paper deals with the path planning problem of a team of mobile robots, in order to cover an area of interest, with prior-defined obstacles. For the single robot case, also known as single robot coverage path planning ...

  • A Decentralized Voting Mechanism: Engaging ERC-20 token holders in decision-making 

    Christodoulou, Panayiotis; Christodoulou, Klitos (IEEE, 2020-07-20)
    This paper presents a Blockchain-based voting mechanism that has the potential to disrupt current voting systems and fuel the development of decentralized governance. More specifically, the paper presents a study on the ...

  • Deriving the Political Affinity of Twitter Users from Their Followers 

    Stamatelatos, Giorgos; Gyftopoulos, Sotirios; Drosatos, George; Efraimidis, Pavlos S. (IEEE, 2018)
    In this work, we show that Twitter users can reveal valuable political information about particular Nodes of Interest (NOIs) they opt to follow. More precisely, we utilize an interesting graph projection method and a series ...

  • Distributed Multi-Robot Coverage using Micro Aerial Vehicles 

    Renzaglia, A.; Doitsidis, L.; Chatzichristofis, Savvas A.; Martinelli, A.; Kosmatopoulos, E. B. (IEEE (Computer Society), 2013)
    In this paper we present a solution to the problem of positioning a team of Micro Aerial Vehicles for a surveillance task in an environment of arbitrary and unknown morphology. The problem is addressed taking into account ...

  • A distributed, plug-n-play algorithm formulti-robot applications with a priorinon-computable objective functions 

    Kapoutsis, Athanasios Ch.; Chatzichristofis, Savvas A.; Kosmatopoulos, Elias B. (Sage, 2019-05)
    This paper presents a distributed algorithm applicable to a wide range of practical multi-robot applications. In such multi-robot applications, the user-defined objectives of the mission can be cast as a general optimization ...

  • Double Mobile sinks Architecture for WSN Data Gathering and Critical Events Detection 

    Khalifeh, Ala’; Abed, Husam; Darabkh, Khalid A.; Chatzichristofis, Savvas A.; Zinonos, Zinon (IEEE, 2020-06-17)
    Data gathering and critical events detection are two essential functionalities for Wireless Sensor Network (WSN). In this paper, we propose double mobile sinks network architecture, where two mobile sink nodes visit the ...

  • DUTH at TREC 2013 Contextual Suggestion Track 

    Drosatos, George; Stamatelatos, Giorgos; Arampatzis, Avi; Efraimidis, Pavlos S. (2013)
    In this report we give an overview of our participation in the TREC 2013 Contextual Suggestion Track. We present an approach for context processing that comprises a newly designed and fine-tuned POI (Point Of Interest) ...

  • DUTH at TREC 2015 Clinical Decision Support Track 

    Drosatos, George; Roumeliotis, Stefanos; Arampatzis, Avi; Kaldoudi, Eleni (2015)
    In this report we give an overview of our participation in the TREC 2015 Clinical Decision Support Track. We present two approaches for pre-processing and indexing of the open-access PubMed articles, and four methods for ...

  • Dynamic Topology Control for WSNs in Critical Environments 

    Zinonos, Zinon; Vassiliou, Vasos; Ioannou, Christiana; Koutroullos, Marios (IEEE, 2011)
    Plant automation and control are mission-critical applications and require timely and reliable data delivery, which is difficult to provide using a wireless technology. This is especially more difficult in industrial ...

  • Dynamic two-stage image retrieval from large multimedia databases 

    Arampatzis, Avi; Zagoris, Konstantinos; Chatzichristofis, Savvas A. (Elsevier, 2013)
    Content-based image retrieval (CBIR) with global features is notoriously noisy, especially for image queries with low percentages of relevant images in a collection. Moreover, CBIR typically ranks the whole collection, ...

  • Dynamic Two-Stage Image Retrieval from Large Multimodal Databases 

    Arampatzis, Avi; Zagoris, Konstantinos; Chatzichristofis, Savvas A. (Springer-Verlag, 2011)
    Content-based image retrieval (CBIR) with global features is notoriously noisy, especially for image queries with low percentages of relevant images in a collection. Moreover, CBIR typically ranks the whole collection, ...

  • "Educational Robotics: Platforms, Competitions and Expected Learning Outcomes" 

    Evripidou, S.; Georgiou, K.; Doitsidis, L.; Amanatiadis, A. A.; Zinonos, Zinon; Chatzichristofis, Savvas A. (IEEE, 2020-12-04)
    Motivated by the recent explosion of interest around Educational Robotics (ER), this paper attempts to re-approach this area by suggesting new ways of thinking and exploring the related concepts. The contribution of the ...

  • An efficient privacy-preserving solution for finding the nearest doctor 

    Drosatos, George; Efraimidis, Pavlos S. (Personal and Ubiquitous Computing volume, 2012-10-30)
    In this work, we define the Nearest Doctor Problem for finding the nearest doctor in case of an emergency and present a privacy-preserving protocol for solving it. The solution is based on cryptographic primitives and makes ...

  • Employing Cellular Automata for Shaping Accurate Morphology Maps Using Scattered Data from Robotics’ Missions 

    Kapoutsis, Athanasios Ch.; Chatzichristofis, Savvas A.; Sirakoulis, Georgios Ch.; Doitsidis, Lefteris; Kosmatopoulos, Elias B. (Springer, 2015)
    Accurate maps are essential in the case of robot teams, so that they can operate autonomously and accomplish their tasks efficiently. In this work we present an approach which allows the generation of detailed maps, suitable ...

  • Empowering Responsible Online Gambling by Real-time Persuasive Information Systems 

    Drosatos, George; Nalbadis, Fotis; Arden-Close, Emily; Baines, Victoria; Bolat, Elvira; Vuillier, Laura; Kostoulas, Theodoros; Wasowska, Sonia; Bonello, Maris; Palles, Jane; McAlaney, John; Phalp, Keith; Ali, Raian (IEEE, 2018-05)
    Online gambling, unlike other mediums of problem-atic and addictive behaviours, such as tobacco and alcohol, offers unprecedented opportunities for building information systems that are able to monitor and understand a ...

  • Enabling Responsible Online Gambling by Real-time Persuasive Technologies 

    Drosatos, George; Nalbadis, Fotis; Arden-Close, Emily; Baines, Victoria; Bolat, Elvira; Vuillier, Laura; Kostoulas, Theodoros; Budka, Marcin; Wasowska, Sonia; Bonello, Maris; Brown, Jamie; Corner, Tessa; McAlaney, John; Phalp, Keith; Ali, Raian (RTU Press, 2019-01)
    Online gambling, unlike other offline addiction forms, provides unprecedented opportunities for monitoring users’ behaviour in real-time, along with the ability to adapt persuasive interactions and messages that would match ...