• Conference Object  

      Adaptive connection admission and flow control: quality of service with high utilisation 

      Pitsillides, Andreas; Lambert, Jim (IEEE, 1994)
      In this paper, we use adaptive feedback and adaptive feedforward control methodologies to avoid congestion at high server utilisation. This addresses the combined connection admission and flow control problem (generic ...
    • Article  

      Adaptive nonlinear congestion controller for a differentiated-services framework 

      Pitsillides, Andreas; Ioannou, Petros A.; Lestas, Marios; Rossides, Loukas (2005)
      The growing demand of computer usage requires efficient ways of managing network traffic in order to avoid or at least limit the level of congestion in cases where increases in bandwidth are not desirable or possible. In ...
    • Conference Object  

      Brief Announcement: Optimally work-competitive scheduling for cooperative computing with merging groups 

      Georgiou, Chryssis; Russell, A.; Shvartsman, A. A. (2002)
      The development of algorithms with guaranteed work efficiency for any pattern of fragmentations and merges of the underlying network is addressed. Current results are discussed for the abstract setting where asynchronous ...
    • Conference Object  

      Congestion control for differentiated-services using non-linear control theory 

      Pitsillides, Andreas; Ioannou, Petros A.; Rossides, Loukas (2001)
      The growing demand of computer usage requires efficient ways of managing network traffic in order to avoid or at least limit the level of congestion in cases where increases in bandwidth are not desirable or possible. Using ...
    • Article  

      Content-selection strategies for the periodic prefetching of WWW resources via satellite 

      Dikaiakos, Marios D.; Stassopoulou, Athena (2001)
      In this paper we study satellite-caching, that is, the employment of satellite multicasting for the dissemination of prefetched content to WWW caches. This approach is currently being deployed by major satellite operators ...
    • Conference Object  

      Coordinating web services using channel based communication 

      Lemniotes, Theophilos; Papadopoulos, George Angelos; Arbab, Farhad (2004)
      In this work we investigate the use of a new concept in component communication during the coordination of Web Services, expressed by the channel based coordinating communication system called Reo. The role of Reo is to ...
    • Conference Object  

      Developing a consistent domain-oriented distributed object service 

      Georgiou, Chryssis; Musiał, Peter M.; Shvartsman, A. A. (2005)
      This paper presents a new algorithm for a reconfigurable distributed domain-oriented atomic object service, called DO-RAMBO, which stands for Domain-Oriented Reconfigurable Atomic Memory for Basic Objects. This service is ...
    • Article  

      Distributed adaptation reasoning for a mobility and adaptation enabling middleware 

      Paspallis, Nearchos; Papadopoulos, George Angelos (2006)
      The prospect of adaptive, mobile applications provides both opportunity and challenge to the application developers. Adaptive, mobile applications are designed to constantly adapt to the contextual conditions with the aim ...
    • Conference Object  

      Efficient online state tracking using sensor networks 

      Halkidi, Maria; Kalogeraki, Vana; Gunopulos, Dimitrios; Papadopoulos, Dimitris; Zeinalipour-Yazdi, Constantinos D.; Vlachos, Michail (2006)
      Sensor networks are being deployed for tracking events of interest in many environmental or monitoring applications. Because of their distributed nature of operation, a challenging issue is how to accurately identify the ...
    • Conference Object  

      Evolutionary-fuzzy prediction for strategic QoS routing in broadband networks 

      Vasilakos, Athanasios V.; Ricudis, C.; Anagnostakis, Kostas G.; Pedrycz, W.; Pitsillides, Andreas (IEEE, 1998)
      We present an application of evolutionary-fuzzy prediction in inter-domain routing of broadband network connections with Quality of Services requirements in the case of an integrated ATM and SDH networking architecture. ...
    • Conference Object  

      Fuzzy backward congestion notification (FBCN) congestion control in asynchronous transfer mode (ATM) networks 

      Pitsillides, Andreas; Sekercioglu, Y. Ahmet; Ramamurthy, Gopalakrishnan (IEEE, 1995)
      In this paper, we study the performance of a fuzzy control scheme as a first step to develop better control strategies for avoiding congestion and attaining high link utilisation in ATM based networks. Due to the complexity ...
    • 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 ...
    • Conference Object  

      Hierarchical approach for the bandwidth allocation, management and control in B-ISDN 

      Herzberg, Meir; Pitsillides, Andreas (Publ by IEEE, 1993)
      This paper adopts a hierarchical multilayer/ multilevel approach for the allocation, management and control of B-ISDN resources. This approach seems appropriate to present a vertical decomposition of control layers, having ...
    • Conference Object  

      How valuable are shopbots? 

      Markopoulos, Panos M.; Kephart, J. O. (Association for Computing Machinery, 2002)
      The price information that shopbots provide to buyers is clearly valuable, as it enables them to make a better informed choice of product and vendor. We quantify the value of this price information to the buyer in terms ...
    • Article  

      Implementing the MPEG-21 adaptation quality of service in dynamic environments 

      Angelides, Marios C.; Sofokleous, Anastasis A.; Schizas, Christos N. (2006)
      MPEG-21 embeds the AQoS schema tool which describes and associates conceptually major utilities required during the adaptation process, for example, adaptation operators, constraints and qualities. Defining an AQoS model, ...
    • Article  

      Intermediary infrastructures for the World Wide Web 

      Dikaiakos, Marios D. (2004)
      Intermediaries are software entities, deployed on hosts of the wireline and wireless network, that mediate the interaction between clients and servers of the World Wide Web. In this paper we present a survey of intermediaries, ...
    • Conference Object  

      Modeling context information for realizing simple mobile services 

      Broll, G.; Hußmann, H.; Prezerakos, G. N.; Kapitsaki, Georgia M.; Salsano, S. (2007)
      The emerging technology of mobile services is gaining on importance nowadays and various applications are being developed. Context-awareness constitutes an essential part of mobile services, as it can boost the provision ...
    • Article  

      mPERSONA: Personalized portals for the wireless user: An agent approach 

      Panayiotou, Christoforos; Samaras, George S. (2004)
      The needs of the wireless and mobile user regarding information access and services are quite different than those of the desktop user. This need is not about browsing the Web but about receiving personalized services that ...
    • Conference Object  

      Power control for efficient multicasting in IP-based 3G and beyond mobile networks 

      Vlotomas, N.; Antoniou, Josephina; Hadjipollas, George; Vassiliou, Vasos; Pitsillides, Andreas (Institute of Electrical and Electronics Engineers Inc., 2005)
      Third generation and beyond mobile networks have brought about a demand for new services that refrain from the traditional unicast communication model. These are services demanding transmission to many receivers with ...
    • Conference Object  

      Practical evaluation of GPRS use in a telemedicine system in Cyprus 

      Voskarides, Sotos Ch; Pattichis, Constantinos S.; Istepanian, Robert Sh Habib; Michaelides, C.; Schizas, Christos N. (Institute of Electrical and Electronics Engineers Inc., 2003)
      The unceasing emergence of new technologies in wireless and mobile telecommunication networks, combined with the simultaneous rapid advances in information technology, are leading to many new solutions in the field of ...