• Conference Object  

      An ActOn-based semantic information service for EGEE 

      Xing, Wei; Corcho, O.; Goble, C.; Dikaiakos, Marios D. (2007)
      We describe an information service that aggregates metadata available in hundreds of information sources of the EGEE Grid infrastructure. It uses an ontology-based information integration architecture (ActOn), which is ...
    • Conference Object  

      Applying utility functions to adaptation planning for home automation applications 

      Bratskas, Pyrros; Paspallis, Nearchos; Kakousis, Konstantinos; Papadopoulos, George Angelos (2009)
      A pervasive computing environment typically comprises multiple embedded devices that may interact together and with mobile users. These users are part of the environment, and they experience it through a variety of devices ...
    • Conference Object  

      Challenges in electronic roads in the information society: content-based image retrieval and IP DiffServ 

      Mylonas, Yiannos; Pattichis, Constantinos S.; Pitsillides, Andreas; Panis, Stathis (IEEE, 2000)
      The objective of this study is to address some technological challenges that we faced within the Electronic Roads in the Information Society (ERIS) project. The main task of ERIS is to investigate an approach for dynamic ...
    • Conference Object  

      Congestion control in differentiated services networks using fuzzy logic 

      Chrysostomou, Chrysostomos; Pitsillides, Andreas; Hadjipollas, George; Polycarpou, Marios M.; Sekercioglu, Y. Ahmet (2004)
      The provision of quality of service (QoS) in a differentiated services (Diff-Serv) environment requires an adequate differentiation between high-priority/assured and low-priority/best-effort classes of service in the ...
    • Article  

      Congestion control in differentiated services networks using Fuzzy-RED 

      Chrysostomou, Chrysostomos; Pitsillides, Andreas; Rossides, Loukas; Polycarpou, Marios M.; Sekercioglu, Y. Ahmet (2003)
      Network congestion control remains a critical and high priority issue. The rapid growth of the Internet and increased demand to use the Internet for time-sensitive voice and video applications necessitate the design and ...
    • Conference Object  

      Cooperation among access points for enhanced quality of service in dense wireless environments 

      Antoniou, Josephina; Lesta, Vicky Papadopoulou; Libman, L.; Pitsillides, Andreas; Dehkordi, H. R. (Institute of Electrical and Electronics Engineers Inc., 2014)
      The high popularity of Wi-Fi technology for wireless access has led to a common problem of densely deployed access points (APs) in residential or commercial buildings, competing to use the same or overlapping frequency ...
    • Conference Object  

      Data broadcasting in ad-hoc networks of pervasive devices: Modeling and simulations 

      Wang, L.; Charalambous, Charalambos D.; Makrakis, D.; Vlajic, N. (2003)
      With the rapid growth of wireless networks and demand for services, wireless data broadcast has become a fundamental communication mechanism to enhance the services in ad hoc network of pervasive devices. This work focuses ...
    • Conference Object  

      Development and evaluation of bus priority scenarios via microscopic simulation models 

      Papageorgiou, George; Ioannou, Petros A.; Pitsillides, Andreas; Aphamis, Thrasos; Maimaris, A. (2009)
      The number of private vehicles increased dramatically during the last two decades in the island of Cyprus. This phenomenon had a negative effect on the bus transport mode which over the years its use has been considerably ...
    • Conference Object  

      A discrete event based simulation environment for enhanced UMTS 3 rd generation networks 

      Antoniou, Josephina; Vassiliou, Vasos; Pitsillides, Andreas; Hadjipollas, George; Jacovides, N. (2004)
      This paper presents a new system level simulator that has been developed to evaluate E-UMTS (Enhanced Universal Mobile Telecommunication Systems) 3G Networks. The article describes how the simulator supports different ...
    • Conference Object  

      Employing the flocking behavior of birds for controlling congestion in autonomous decentralized networks 

      Antoniou, Pavlos Ch.; Pitsillides, Andreas; Blackwell, T.; Engelbrecht, A. (2009)
      Recently a great emphasis has been given on autonomous decentralized networks (ADNs) wherein constituent nodes carry out specific tasks collectively. Their dynamic and constrained nature along with the emerging need for ...
    • Article  

      Enabling the deployment of mobile services for end-users: the SMS approach 

      Kapitsaki, Georgia M.; Kateros, D. A.; Pappas, C. (2013)
      Service provision in mobile environments is nowadays moving toward easiness and openness. The end-user’s role in this procedure can be supported through platforms that encourage user’s participation. This is critical toward ...
    • Conference Object  

      An enhanced radio resource allocation approach for efficient MBMS service provision in UTRAN 

      Christophorou, C.; Pitsillides, Andreas; Vassiliou, Vasos (2008)
      As currently specified by 3GPP, MBMS (Multimedia Broadcast Multicast Service) content can be provided in a cell by either Point-to-Point (P-t-P) or Point-to-Multipoint (P-t-M) transmission mode, but not both at the same ...
    • Article  

      Enhanced radio resource management algorithms for efficient MBMS service provision in UTRAN 

      Christophorou, C.; Pitsillides, Andreas; Lundborg, T. (2011)
      As currently specified by 3GPP, Multimedia Broadcast Multicast Service (MBMS) bearer services can be provided within a cell either by Point-to-Point (P-t-P) or Point-to-Multipoint (P-t-M) transmission mode, but not both ...
    • Conference Object  

      Enhanced UMTS cost/revenue optimisation in offices scenarios 

      Cabral, O.; Velez, F. J.; Hadjipollas, George; Stylianoi, M.; Antoniou, Josephina; Vassiliou, Vasos; Pitsillides, Andreas (2005)
      In this paper Enhanced UMTS offices scenarios and classes of services up to wideband are taken into account. A model is proposed for optimising Enhanced UMTS based in costs and revenues. A system level simulator is used ...
    • Article  

      Evolutionary-fuzzy prediction for strategic ID-QoS: Routing in broadband networks 

      Vasilakos, Athanasios V.; Ricudis, C.; Anagnostakis, Kostas G.; Pedrycz, W.; Pitsillides, Andreas; Gao, X. Z. (2001)
      This article presents an application of evolutionary-fuzzy prediction in interdomain routing of broadband network connections with Quality of Services requirements in the case of an integrated ATM and SDH networking ...
    • Article  

      Exploring content dependencies to better balance performance and freshness in web database applications 

      Papastavrou, Stavros; Chrysanthis, Panos K.; Samaras, George S. (2012)
      In this paper, we present a novel approach for materializing dynamic web pages by exploiting content dependencies and user access patterns. We introduce two new semantic-based data freshness metrics and show that our ...
    • Conference Object  

      Fuzzy control of ABR traffic flow in ATM LANs 

      Sekercioglu, Y. Ahmet; Pitsillides, Andreas (IEEE, 1995)
      High-speed LANs are beginning to migrate from shared media to switch based configurations (commonly based on ATM architectures). Because of the characteristics of ATM networks and nature of LAN traffic, there is a need for ...
    • Conference Object  

      Fuzzy explicit marking for congestion control in differentiated services networks 

      Chrysostomou, Chrysostomos; Pitsillides, Andreas; Hadjipollas, George; Sekercioglu, Y. Ahmet; Polycarpou, Marios M. (2003)
      This paper presents a new active queue management scheme, fuzzy explicit marking (FEM), implemented within the differentiated services (Diffserv) framework to provide the congestion control using a fuzzy logic control ...
    • Article  

      Fuzzy logic based congestion control in computer networks 

      Chrysostomou, Chrysostomos; Pitsillides, Andreas (2006)
      Network congestion control is a complex problem that requires robust, possibly intelligent, control methodologies to obtain satisfactory performance. Designing effective congestion control strategies for computer networks ...
    • Conference Object  

      Fuzzy logic congestion control in TCP/IP differentiated services networks for quality of service provisioning 

      Chrysostomou, Chrysostomos; Pitsillides, Andreas; Hadjipollas, George; Sekercioglu, Y. Ahmet; Polycarpou, Marios M. (2004)
      A two class Fuzzy Explicit Marking (FEM) controller was designed and used in Differentiated Services Networks for quality of service provisioning. The fuzzy control system is designed to regulate the queues of IP routers ...