Browsing by Subject "Quality assurance"

Now showing items 1-12 of 12

    • Article  

      About mentioning quality of preparation and quality control of radiopharmaceuticals used in nuclear medicine procedures [3] 

      Wozniak, Greta; Georgoulias, Panagiotis; Archimandritis, Spiros; Dimakopoulos, Nikolaos; Fezoulidis, Ioannis (2006)
    • Article  

      Adaptive congestion control in ATM based networks: Quality of service and high utilisation 

      Pitsillides, Andreas; Lambert, J. (1997)
      To improve network utilisation and robustness for Asynchronous Transfer Mode (ATM) networks there is increasing evidence that reactive congestion controls are necessary. However the large bandwidth-delay product and the ...
    • Conference Object  

      Analyzing the number of slow reads for semifast atomic read/write register implementations 

      Georgiou, Chryssis; Kentros, Sotirios; Nicolaou, Nicolas C.; Shvartsman, A. A. (2009)
      Developing fast implementations of atomic read/write registers in the message passing model is among the fundamental problems in distributed computing. Typical implementations require two communication round trips for read ...
    • Article  

      Designs of bisimilar Petri net controllers with fault tolerance capabilities 

      Li, L.; Hadjicostis, Christoforos N.; Sreenivas, R. S. (2008)
      This paper proposes an approach for providing tolerance against faults that may compromise the functionality of a given controller modeled by a Petri net. The method is based on embedding the given Petri net controller ...
    • Article  

      Fault-tolerant semifast implementations of atomic read/write registers 

      Georgiou, Chryssis; Nicolaou, Nicolas C.; Shvartsman, A. A. (2009)
      This paper investigates time-efficient implementations of atomic read-write registers in message-passing systems where the number of readers can be unbounded. In particular we study the case of a single writer, multiple ...
    • Article  

      In-network data acquisition and replication in mobile sensor networks 

      Andreou, Panayiotis G.; Zeinalipour-Yazdi, Constantinos D.; Chrysanthis, Panos K.; Samaras, George S. (2011)
      This paper assumes a set of n mobile sensors that move in the Euclidean plane as a swarm. Our objectives are to explore a given geographic region by detecting and aggregating spatiooral events of interest and to store these ...
    • Conference Object  

      Integrated switching strategy for ABR traffic control in ATM networks 

      Pitsillides, Andreas; Ioannou, Petros A. (1997)
      In this paper we extend earlier results on combined control problem of connection admission, flow rate, and bandwidth allocation (capacity, service-rate) in ATM based networks under nonstationary conditions to the multiple ...
    • Conference Object  

      Integrated switching strategy for ABR traffic control in ATM networksAAA 

      Pitsillides, Andreas; Ioannou, Petros A. (1997)
      In this paper we extend earlier results on combined control problem of connection admission, flow rate, and bandwidth allocation (capacity, service-rate) in ATM based networks under nonstationary conditions to the multiple ...
    • Article  

      On the robustness of (semi) fast quorum-based implementations of atomic shared memory 

      Georgiou, Chryssis; Nicolaou, Nicolas C.; Shvartsman, A. A. (2008)
      This paper studies a trade-off between fault-tolerance and latency in implementations of atomic read/write objects in message-passing systems. In particular, considering fast or semifast quorum-based implementations, that ...
    • Conference Object  

      Perimeter-based data replication in mobile sensor networks 

      Andreou, Panayiotis G.; Zeinalipour-Yazdi, Constantinos D.; Andreou, Maria I.; Chrysanthis, Panos K.; Samaras, George S. (2009)
      This paper assumes a set of n mobile sensors that move in the Euclidean plane as a swarm. Our objectives are to explore a given geographic region by detecting spatio-temporal events of interest and to store these events ...
    • Conference Object  

      Quality assurance of diagnostic monitors 

      Savva, Angelandria; Christofides, Stelios; Kaplanis, Prodromos A.; Menikou, Georgios; Kaolis, Demetris; Tsertos, Haralambos (2009)
      The quality assurance of diagnostic monitors is only a small part of the chain required to accomplish an acceptable standard of diagnostic images in a radiology department. It is most unlikely that a Physician will be able ...
    • Article  

      Quality control for structural credit risk models 

      Andreou, Elena; Ghysels, Eric (2008)
      Over the last four decades, a large number of structural models have been developed to estimate and price credit risk. The focus of the paper is on a neglected issue pertaining to fundamental shifts in the structural ...