Results 31 to 40 of about 3,443,010 (236)
Entropy, 2021 By frequency-band extracting, we experimentally and theoretically investigate time-delay signature (TDS) suppression and entropy growth enhancement of a chaotic optical-feedback semiconductor laser under different injection currents and feedback ...
Yanqiang Guo +4 more
doaj +1 more source
Generalized Weighted Permutation Entropy
, 2022 A novel heuristic approach is proposed here for time series data analysis, dubbed Generalized weighted permutation entropy, which amalgamates and generalizes beyond their original scope two well established data analysis methods: Permutation entropy, and
Borko Stosic +7 more
core +1 more source
Entropy increase in switching systems [PDF]
, 2013 The relation between the complexity of a time-switched dynamics and the complexity of its control sequence depends critically on the concept of a non-autonomous pullback attractor.
Giménez, Ángel +7 more
core +1 more source
Entropy, 2018 The characteristics of the early fault signal of the rolling bearing are weak and this leads to difficulties in feature extraction. In order to diagnose and identify the fault feature from the bearing vibration signal, an adaptive local iterative filter ...
Yong Lv, Yi Zhang, Cancan Yi
doaj +1 more source
Bearing Early Fault Diagnosis Based on an Improved Multiscale Permutation Entropy and SVM
Shock and Vibration, 2022 Bearing fault is a process of gradual development and deepening. In the early stage of the fault, if it can be found out in time and taken reasonable prevention and elimination measures, we can avoid serious losses and safety accidents.
Qunyan Jiang +4 more
doaj +1 more source
A New Kind of Permutation Entropy Used to Classify Sleep Stages from Invisible EEG Microstructure [PDF]
, 2017 Permutation entropy and order patterns in an EEG signal have been applied by several authors to study sleep, anesthesia, and epileptic absences. Here, we discuss a new version of permutation entropy, which is interpreted as distance to white noise.
Bandt, Christoph, Christoph Bandt
core +1 more source
Permutation Entropy for Graph Signals [PDF]
, 2022 Entropy metrics (for example, permutation entropy) are nonlinear measures of irregularity in time series (one-dimensional data). Some of these entropy metrics can be generalised to data on periodic structures such as a grid or lattice pattern (two ...
Tan, Chao +2 more
core +1 more source
Generalized permutation patterns - a short survey [PDF]
, 2010 An occurrence of a classical pattern p in a permutation π is a subsequence of π whose letters are in the same relative order (of size) as those in p.
Steingrimsson, Einar
core +3 more sources
Computation, 2023 Confusion, diffusion, and encryption keys affect the quality of image encryption. This research proposes combining bit- and pixel-level permutation and substitution methods based on three advanced chaotic logistic map methods.
De Rosal Ignatius Moses Setiadi +1 more
doaj +1 more source
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Therapeutic apheresis (TA) is an established treatment modality for hematologic, neurologic, and immunologic disorders, yet access remains severely limited in sub‐Saharan Africa. Donor apheresis, including platelet apheresis collection from healthy donors, represents an important complementary modality supporting blood product ...
Nosa Bazuaye +33 more
wiley +1 more source