Results 21 to 30 of about 13,879 (233)

Radial numerical integrations based on the sinc function [PDF]

open access: yesComputer Physics Communications, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Weber, Valéry   +2 more
openaire   +3 more sources

ACTIVE CONTOUR MODEL USING FRACTIONAL SYNC WAVE FUNCTION FOR MEDICAL IMAGE SEGMENTATION

open access: yesAsia-Pacific Journal of Information Technology and Multimedia, 2016
Intensity inhomogeneity occurs when pixels in medical images overlap due to anomalies in medical imaging devices. These anomalies lead to difficult medical image segmentation.
Norshaliza Kamaruddin
doaj   +1 more source

About Trigonometric-polynomial Bounds of Sinc Function

open access: yesMathematical Sciences and Applications E-Notes, 2020
In this article, we establish sharp trigonometric-polynomial bounds for unnormalized sinc function.
Ramkrishna DHAİGUDE   +2 more
openaire   +3 more sources

An Interleaved Segmented Spectrum Analysis: A Measurement Technique for System Frequency Response and Fault Detection

open access: yesSensors, 2022
A frequency spectrum segmentation methodology is proposed to extract the frequency response of circuits and systems with high resolution and low distortion over a wide frequency range.
Alejandro Roman-Loera   +3 more
doaj   +1 more source

The Binomial Coefficient as an (In)finite Sum of Sinc Functions

open access: yesThe American Mathematical Monthly, 2022
This article was accepted for publication by the American Mathematical Monthly on 2021.04 ...
openaire   +2 more sources

A direct computation of a certain family of integrals [PDF]

open access: yesArab Journal of Mathematical Sciences, 2021
Purpose – The authors propose a rather elementary method to compute a family of integrals on the half line, involving positive powers of sin x and negative powers of x, depending on the integer parameters n≥q≥1.
Lorenzo Fornari   +2 more
doaj   +1 more source

Observation of waveguide Fabry-Perot lasing in highly efficient Si nanocrystals

open access: yesResults in Physics, 2022
A luminescent Si nanocrystal (SiNC) thin film with photoluminescence quantum yield (PLQY) > 70% was made by using hydrogen silsesquioxane (HSQ), followed by long-time high-pressure hydrogenation.
Zhi-Yuan Yu   +13 more
doaj   +1 more source

Several Double Inequalities for Integer Powers of the Sinc and Sinhc Functions with Applications to the Neuman–Sándor Mean and the First Seiffert Mean

open access: yesAxioms, 2022
In the paper, the authors establish a general inequality for the hyperbolic functions, extend the newly-established inequality to trigonometric functions, obtain some new inequalities involving the inverse sine and inverse hyperbolic sine functions, and ...
Wen-Hui Li, Qi-Xia Shen, Bai-Ni Guo
doaj   +1 more source

Numerical solution of multi-order fractional differential equations via the sinc collocation method [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2015
In this paper, the sinc collocation method is proposed for solving linear and nonlinear multi-order fractional differential equations based on the new definition of fractional derivative which is recently presented by Khalil, R., Al Horani, M., Yousef, A.
Esmail Hesameddini, Elham Asadollahifard
doaj   +1 more source

METHOD OF AIRBORNE SAR RADIATION CALIBRATION BASED ON POINT TARGET [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Radiation calibration of airborne SAR images is the basis for realizing the quantitative processing of airborne SAR images. Radiation calibration based on point targets is a general and convenient method.
S. Yang, Z. Xu, Z. Xu, C. Cheng
doaj   +1 more source

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