We study the time reversal properties of time series by means of a ternary coding of the
differentiated series. For the symbolic series obtained in this way we show that suitable pairs …

The paper is devoted to the study of cardiac rhythm variability (CRV) using the phase and
extended phase spaces of instantaneous cardiac rhythm (ICR) obtained from the Holter …

In this work we study the fractal properties of diffusion-limited aggregation (DLA) clusters
grown on spherical surfaces. Diffusion-limited aggregation clusters, or DLA trees, are highly …

This paper compares the correlation dimension (D2) and Higuchi fractal dimension (HFD)
approaches in estimating BIS index based on of electroencephalogram (EEG). The single …

Exponential decay of the power spectrum is typically observed in turbulent flow patterns, as
evidenced both in experiments and in the Navier–Stokes equations describing fluid …

In the present study, the authors report evidence that the existence of premature ventricular
contractions increases the embedding dimension of the cardiac dynamics. They also …

Box-assisted and prism-assisted algorithms are among the most popular algorithms for the
computation of the correlation dimension. However, the box size is usually determined by …

In healing centers, electrocardiographic (ECG) observing has advanced from introductory
heart rate and beat assurance to complex arrhythmia, myocardial ischemia, and drawn-out …

In this paper we offer an algorithm for quantization of the classical phase space of
instantaneous heart rhythm with a constant or in quantization increment of h. The process of …