Results 11 to 20 of about 451,542 (281)

Adaptive Multiscale Symbolic-Dynamics Entropy for Condition Monitoring of Rotating Machinery [PDF]

open access: yesEntropy, 2019
Vibration data from rotating machinery working in different conditions display different properties in spatial and temporal scales. As a result, insights into spatial- and temporal-scale structures of vibration data of rotating machinery are fundamental ...
Chunhong Dou, Jinshan Lin
doaj   +2 more sources

Ordinal Spectrum: Mapping Ordinal Patterns into Frequency Domain [PDF]

open access: yesEntropy
Classical spectral analysis characterizes linear systems effectively but often fails to reveal the nonlinear temporal structure of chaotic dynamics. We introduce the ordinal spectrum, a frequency-domain characterization derived from the ordinal-pattern ...
Mario Chavez, Johann H. Martínez
doaj   +2 more sources

Comparison of fetal heart rate variability by symbolic dynamics at the third trimester of pregnancy and low-risk parturition. [PDF]

open access: yesHeliyon, 2020
Montalvo-Jaramillo CI   +11 more
europepmc   +2 more sources

Neural Evidence of Mirror Self-Recognition in the Secondary Somatosensory Cortex of Macaque: Observations from a Single-Cell Recording Experiment and Implications for Consciousness

open access: yesBrain Sciences, 2021
Despite mirror self-recognition being regarded as a classical indication of self-awareness, little is known about its neural underpinnings. An increasing body of evidence pointing to a role of multimodal somatosensory neurons in self-recognition guided ...
Rafael Bretas   +4 more
doaj   +1 more source

“Natural Laboratory Complex” for novel primate neuroscience

open access: yesFrontiers in Integrative Neuroscience, 2022
We propose novel strategies for primate experimentation that are ethically valuable and pragmatically useful for cognitive neuroscience and neuropsychiatric research.
Atsushi Iriki   +2 more
doaj   +1 more source

Attractors in Pattern Iterations of Flat Top Tent Maps

open access: yesMathematics, 2023
Flat-topped one-dimensional maps have been used in the control of chaos in one-dimensional dynamical systems. In these applications, this mechanism is known as simple limiter control.
Luis Silva
doaj   +1 more source

Statistical Tests of Symbolic Dynamics

open access: yesMathematics, 2021
A novel general method for constructing nonparametric hypotheses tests based on the field of symbolic analysis is introduced in this paper. Several existing tests based on symbolic entropy that have been used for testing central hypotheses in several ...
Fernando López   +3 more
doaj   +1 more source

Predictive Quantization and Symbolic Dynamics

open access: yesAlgorithms, 2022
Capturing long-term statistics of signals and time series is important for modeling recurrent phenomena, especially when such recurrences are a-periodic and can be characterized by the approximate repetition of variable length motifs, such as patterns in
Shlomo Dubnov
doaj   +1 more source

Reliability of Symbolic Analysis of Heart Rate Variability and Its Changes During Sympathetic Stimulation in Elite Modern Pentathlon Athletes: A Pilot Study

open access: yesFrontiers in Physiology, 2022
Background and PurposeMost studies on heart rate variability (HRV) in professional athletes concerned linear, time-, and frequency-domain indices, and there is lack of studies on non-linear parameters in this group. The study aimed to determine the inter-
Jakub S. Gąsior   +6 more
doaj   +1 more source

Symbolic dynamics for Lozi maps [PDF]

open access: yes, 2016
In this paper we study the family of the Lozi maps $L_{a,b} : {\mathbb R}^2 \to {\mathbb R}^2$, $L_{a,b} = (1 + y - a|x|, bx)$, and their strange attractors $\Lambda_{a,b}$.
Misiurewicz, Michal, Stimac, Sonja
core   +2 more sources

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