Browsing by Subject "Fluctuations"

Now showing items 1-3 of 3

    • Article  

      The effect of the phase of transmission on contrast agent echoes 

      Morgan, K. E.; AVERKIOU, MICHALAKIS A.; Ferrara, K. (1998)
      Ultrasound contrast agents consist of a gas bubble, encapsulated by a shell for stabilization. The shell dampens the fluctuations in the bubble radius when insonified. The detection of contrast microbubbles during a medical ...
    • Conference Object  

      General non-stationary models for short-term and long-term fading channels 

      Charalambous, Charalambos D.; Menemenlis, N. (Institute of Electrical and Electronics Engineers Inc., 2000)
      This paper discusses the use of stochastic differential equations to model signal envelope variations over large areas, which are subject to long-term fading effects from the transmitter to local areas, followed by short-term ...
    • Article  

      Three-Dimensional Modelling of Concentration Fluctuations in Complicated Geometry 

      Andronopoulos, S.; Grigoriadis, D. G. E.; Robins, A.; Venetsanos, A.; Rafailidis, S.; Bartzis, J. G. (2001)
      The strong fluctuating component in the measured concentration time series of a dispersing gaseous pollutant in the atmospheric boundary layer, and the hazard level associated to short-term concentration levels, demonstrate ...