Results 21 to 30 of about 3,208,584 (371)

Clifford Wavelet Entropy for Fetal ECG Extraction

open access: yesEntropy, 2021
Analysis of the fetal heart rate during pregnancy is essential for monitoring the proper development of the fetus. Current fetal heart monitoring techniques lack the accuracy in fetal heart rate monitoring and features acquisition, resulting in ...
Malika Jallouli   +3 more
doaj   +1 more source

Identifications of the coefficients of the Taylor expansion (second order) of periodic non-collision solutions for the perturbed planar Keplerian Hamiltonian system

open access: yesAIMS Mathematics, 2023
The discussion of disordered Keplerian Hamiltonian systems in our previously published study, which we verified, is expanded upon in this article. The collision semicircular orbit, and at least one other symmetric orbit is mentioned in this article.
Riadh Chteoui
doaj   +1 more source

On L-derivatives and biextensions of Calabi–Yau motives

open access: yesExperimental Results, 2023
We prove that certain differential operators of the form $ DLD $ with $ L $ hypergeometric and $ D=z\frac{\partial }{dz} $ are of Picard–Fuchs type.
Vasily Golyshev, Adrian Clingher
doaj   +1 more source

A Wavelet Multiscale Mathematical Model for Quality of Life Index Measuring

open access: yesApplied Sciences, 2022
The present paper is concerned with the study of the quality of life index. Such an index has become an important index for measuring the well-being of individuals.
Majed S. Balalaa, Anouar Ben Mabrouk
doaj   +1 more source

Renormalization in Combinatorially Non-Local Field Theories: The Hopf Algebra of 2-Graphs [PDF]

open access: yesMathematical physics, analysis and geometry, 2021
Renormalization in perturbative quantum field theory is based on a Hopf algebra of Feynman diagrams. A precondition for this is locality. Therefore one might suspect that non-local field theories such as matrix or tensor field theories cannot benefit ...
J. Thürigen
semanticscholar   +1 more source

Holographic symmetry algebras for gauge theory and gravity [PDF]

open access: yesJournal of High Energy Physics, 2021
All 4D gauge and gravitational theories in asymptotically flat spacetimes contain an infinite number of non-trivial symmetries. They can be succinctly characterized by generalized 2D currents acting on the celestial sphere.
A. Guevara   +3 more
semanticscholar   +1 more source

Wavelet Time-Scale Modeling of Brand Sales and Prices

open access: yesApplied Sciences, 2022
Marketing is the way we ensure our sales are the best in the market, our prices the most accessible, and our clients satisfied, thus ensuring our brand has the widest distribution.
Tawfeeq M. Alanazi, Anouar Ben Mabrouk
doaj   +1 more source

All opinions are not equal: Toward a consensual approach to the development of drug policy

open access: yesAustralian Journal of Social Issues, Volume 57, Issue 4, Page 812-828, December 2022., 2022
Abstract Drug policy has been subjected to much scrutiny from different stakeholder groups who present sometimes very different opinions on solutions to address a problem. Reconciling such differences, that are underpinned by both anecdotal and empirical evidence, is a priority yet to be fully achieved.
Gabriel T. W. Wong, Matthew Manning
wiley   +1 more source

The Systematic Risk at the Crisis—A Multifractal Non-Uniform Wavelet Systematic Risk Estimation

open access: yesFractal and Fractional, 2021
In the last decade, many factors, such as socio-political and econo-environmental ones, have led to a perturbation in the timeline of the worldwide development, and especially in countries and regions having political changes.
Mounir Sarraj, Anouar Ben Mabrouk
doaj   +1 more source

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