• Article  

      A comprehensive context modeling framework for pervasive computing systems 

      Reichle, R.; Wagner, M.; Khan, M. U.; Geihs, K.; Lorenzo, J.; Valla, M.; Fra, C.; Paspallis, Nearchos; Papadopoulos, George Angelos (2008)
      Context management in pervasive computing environments must reflect the specific characteristics of these environments, e.g. distribution, mobility, resource-constrained devices, or heterogeneity of context sources. Although ...
    • Conference Object  

      A context query language for pervasive computing environments 

      Reichte, R.; Wagner, M.; Khan, M. U.; Geihs, K.; Valla, M.; Fra, C.; Paspallis, Nearchos; Papadopoulos, George Angelos (2008)
      This paper identifies requirements for querying and accessing context information in mobile and pervasive computing environments. Furthermore it studies existing query languages showing that they satisfy only a subset of ...
    • Conference Object  

      Designing mechanisms for reliable internet-based computing 

      Fernández Anta, Antonio; Georgiou, Chryssis; Mosteiro, Miguel A. (2008)
      In this work, using a game-theoretic approach, cost-sensitive mechanisms that lead to reliable Internet-based computing are designed. In particular, we consider Internet-based master-worker computations, where a master ...
    • Conference Object  

      Exploring graphics processor performance for general purpose applications 

      Trancoso, Pedro; Charalambous, Maria (2005)
      Graphics processors are designed to perform many floating-point operations per second. Consequently, they are an attractive architecture for high-performance computing at a low cost. Nevertheless, it is still not very clear ...
    • Article  

      Graphical inference for multiple intrusion detection 

      Le, T.; Hadjicostis, Christoforos N. (2008)
      In this paper, we consider vulnerabilities of networked systems and develop a multiple intrusion detection system (MIDS) which operates by running belief propagation on an appropriately constructed weighted bipartite graph. ...
    • Doctoral Thesis  Open Access

      KSPOT : a network-aware framework for energy-efficient data acquisition in wireless sensor networks 

      Andreou, Panayiotis G. (Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2011-06)
      Τα Ασύρματα Δίκτυα Αισθητήρων (ΑΔΑ) αποτελούνται από μικροσκοπικές συσκευές με περιορισμένους πόρους και παρέχουν στους χρήστες την ευκαιρία να παρακολουθούν το περιβάλλον με πολύ ψηλή ευκρίνεια. Για τη συλλογή των δεδομένων ...
    • Article  

      Metadata ranking and pruning for failure detection in grids 

      Zeinalipour-Yazdi, Constantinos D.; Papadakis, Charis; Georgiou, Chryssis; Dikaiakos, Marios D. (2008)
      The objective of Grid computing is to make processing power as accessible and easy to use as electricity and water. The last decade has seen an unprecedented growth in Grid infrastructures which nowadays enables large-scale ...
    • Article  

      Multi-set DHT for range queries on dynamic data for grid information service 

      Da Costa, G.; Orlando, S.; Dikaiakos, Marios D. (2008)
      Scalability is a fundamental problem for information systems when the amount of managed data increases. Peer to Peer systems are usually used to solve scalability problems as centralized approaches do not scale without ...
    • Article  

      A new model for selfish routing 

      Lücking, T.; Mavronicolas, Marios; Monien, Burkhard; Rode, M. (2008)
      In this work, we introduce and study a new, potentially rich model for selfish routing over non-cooperative networks, as an interesting hybridization of the two prevailing such models, namely the KPmodel [E. Koutsoupias, ...
    • Article  

      An optimization of context sharing for self-adaptive mobile applications 

      Paspallis, Nearchos; Papadopoulos, George Angelos (2008)
      Because of the high potential of mobile and pervasive computing systems, there is an ongoing trend in developing applications exhibiting context awareness and adaptive behavior. While context awareness guarantees that the ...
    • Conference Object  

      The power of the defender 

      Gelastou, Marina; Mavronicolas, Marios; Lesta, Vicky Papadopoulou; Philippou, Anna; Spirakis, Paul G. (2006)
      We consider a security problem on a distributed network. We assume a network whose nodes are vulnerable to infection by threats (e.g. viruses), the attackers. A system security software, the defender, is available in the ...
    • Article  

      Professional development for computer-enhanced learning: a case study with science teachers 

      Valanides, Nicos; Angeli, Charoula (2008)
      The preparation of science teachers to integrate computers in their teaching seems to be a challenging task, and teacher educators need to undertake systematic and coordinated efforts for effectively preparing teachers to ...
    • Conference Object  

      Robust runtime optimization of data transfer in queries over web services 

      Gounaris, A.; Yfoulis, C.; Sakellariou, R.; Dikaiakos, Marios D. (2008)
      Self-managing solutions have recently attracted a lot of interest from the database community. The need for self-* properties is more evident in distributed applications comprising heterogeneous and autonomous databases ...
    • Article  

      Topic 1: Support tools and environments 

      Rana, O.; Dikaiakos, Marios D.; Katz, D. S.; Morin, C. (2012)
      Despite an impressive body of research, parallel and distributed computing remains a complex task prone to subtle software issues that can affect both the correctness and the performance of the computation. It is interesting ...
    • Article  

      TSIC: Thermal scheduling simulator for chip multiprocessors 

      Stavrou, Kyriakos; Trancoso, Pedro (2005)
      Increased power density, hot-spots, and temperature gradients are severe limiting factors for today's state-of-the-art microprocessors. However, the flexibility offered by the multiple cores in future Chip Multiprocessors ...
    • Article  

      Watt matters most? Design space exploration of high-performance microprocessors for power-performance efficiency 

      Trancoso, Pedro (2007)
      Computer systems have evolved significantly in the last years leading to high-performance systems. This, however, has come with a cost of large power dissipation. As such, power-awareness has become a major factor in ...