Auteurs : Konstantin Karamanos http://popups.lib.uliege.be/1373-5411/index.php?id=3496 Publications of Auteurs Konstantin Karamanos fr 0 Ergodic Properties of the Relaxation Phase in Nonchaotic Unimodal Maps http://popups.lib.uliege.be/1373-5411/index.php?id=3491 The convergence to the mean values of observables is studied for nonlinear dynamical systems in the period-doubling bifurcation regime. The phase space convergence to the mean values is studied numerically; it reveals a characteristic behaviour induced by several special points in phase space. The convergence to the mean value for these points is exponential as opposed to the power-law convergence of the majority of the phase space. The issue of universality of these results which characterize the period doubling bifurcation behaviour is discussed. Fri, 20 Sep 2024 09:44:35 +0200 Thu, 10 Oct 2024 10:03:17 +0200 http://popups.lib.uliege.be/1373-5411/index.php?id=3491 Block Entropy analysis of long recorded Electrocardiograms as a good way for discrimination between Normal subjects and Coronary patients http://popups.lib.uliege.be/1373-5411/index.php?id=1918 Heart Rate Variability timeseries of long recordings of Electrocardiograms are filtered in order to generate a coarse grained linguistic dynamics. Then the Block Entropy analysis is applied in order to analyze the coarse grained statistics. The set of the timeseries is separated in two categories : Normal subjects, and Coronary patients. The entropy analysis provides a quick and efficient tool for discrimination of the timeseries according to these categories. Healthy subjects provided more complex statistics compared to patient ones. In particular the healthy data files provided higher values of block Entropies compared to patient ones. Furthermore all this analysis may provide a useful statistical way to the understanding of the human cardiac system. Wed, 17 Jul 2024 13:42:22 +0200 Thu, 10 Oct 2024 10:37:01 +0200 http://popups.lib.uliege.be/1373-5411/index.php?id=1918