Results 11 to 20 of about 731,437 (268)

Slope Entropy Characterisation: An Asymmetric Approach to Threshold Parameters Role Analysis [PDF]

open access: yesEntropy
Slope Entropy (SlpEn) is a novel method recently proposed in the field of time series entropy estimation. In addition to the well-known embedded dimension parameter, m, used in other methods, it applies two additional thresholds, denoted as δ and γ, to ...
Mahdy Kouka   +2 more
doaj   +7 more sources

Single Feature Extraction Method of Bearing Fault Signals Based on Slope Entropy

open access: yesShock and Vibration, 2022
As an entropy representing the complexity of sequence, slope entropy (SloE) is applied to feature extraction of bearing signal for the first time. With the advantage of slope entropy in feature extraction, the effectiveness of bearing fault signal ...
Erna Shi
doaj   +3 more sources

Research on Sea State Signal Recognition Based on Beluga Whale Optimization–Slope Entropy and One Dimensional–Convolutional Neural Network [PDF]

open access: yesSensors
This study introduces a novel nonlinear dynamic analysis method, known as beluga whale optimization–slope entropy (BWO-SlEn), to address the challenge of recognizing sea state signals (SSSs) in complex marine environments. A method of underwater acoustic
Yuxing Li, Zhaoyu Gu, Xiumei Fan
doaj   +4 more sources

Discriminating Bacterial Infection from Other Causes of Fever Using Body Temperature Entropy Analysis [PDF]

open access: yesEntropy, 2022
Body temperature is usually employed in clinical practice by strict binary thresholding, aiming to classify patients as having fever or not. In the last years, other approaches based on the continuous analysis of body temperature time series have emerged.
Borja Vargas   +6 more
doaj   +2 more sources

Entropy Stable Discontinuous Galerkin Finite Element Method with Multi-Dimensional Slope Limitation for Euler Equations

open access: yesMoroccan Journal of Pure and Applied Analysis, 2022
We present an entropy stable Discontinuous Galerkin (DG) finite element method to approximate systems of 2-dimensional symmetrizable conservation laws on unstructured grids. The scheme is constructed using a combination of entropy conservative fluxes and
Madrane Aziz, Benkhaldoun Fayssal
doaj   +2 more sources

Fever Time Series Analysis Using Slope Entropy. Application to Early Unobtrusive Differential Diagnosis [PDF]

open access: yesEntropy, 2020
Fever is a readily measurable physiological response that has been used in medicine for centuries. However, the information provided has been greatly limited by a plain thresholding approach, overlooking the additional information provided by temporal variations and temperature values below such threshold that are also representative of the subject ...
David Cuesta-Frau   +3 more
openaire   +6 more sources

Maximum Entropy Whitening Algorithm with Adaptive Neuron Slope for Blind DFE [PDF]

open access: yesTelfor Journal, 2016
The addressed blind decision feedback equalizer (DFE) reverses the classical order of its feed-forward and feedback filters at the beginning of adaptation to achieve the best equalization of the minimum and maximum phase components of a channel transfer ...
V. R. Krstić   +2 more
doaj   +2 more sources

Efficient slope reliability analysis under soil spatial variability using maximum entropy distribution with fractional moments

open access: yesJournal of Rock Mechanics and Geotechnical Engineering
Spatial variability of soil properties imposes a challenge for practical analysis and design in geotechnical engineering. The latter is particularly true for slope stability assessment, where the effects of uncertainty are synthesized in the so-called ...
Chengxin Feng   +5 more
doaj   +3 more sources

Feature extraction method of ship radiated noise based on BOA-VMD and slope entropy

open access: yesFrontiers in Physics, 2022
Although the technical requirements for the feature extraction of ship radiated noise (SRN) in the fields of national defense and economy increase with each passing day, the complexity of the marine environment makes the feature extraction of SRN ...
Yingmin Yi, Yingmin Yi, Ge Tian
doaj   +1 more source

Free and classical entropy over the circle. [PDF]

open access: yes, 2007
Relative entropy with respect to normalized arclength measure on the circle is greater than or equal to the negative logarithmic energy (Voiculescu's negative free entropy) and is greater than or equal to the modified relative free entropy.
Blower, Gordon
core   +4 more sources

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