Results 51 to 60 of about 978 (120)

Chlodowsky variant of Bernstein-type operators on the domain

open access: yesOpen Mathematics
In the present paper, we deal with Bernstein-Chlodowsky type operators for approximating functions on the domain. We first present Bernstein-Chlodowsky type operators in two variables and then we discuss some examples of these operators under a domain ...
Serenbay Sevilay Kırcı   +1 more
doaj   +1 more source

Enhanced double random phase encryption of quantum images

open access: yesResults in Physics, 2019
We improve the double random phase encryption (DRPE) algorithm to make the outcome of DRPE algorithm as uniformly mixed as possible via applying scrambling transform.
Shiping Du   +3 more
doaj   +1 more source

On better approximation order for the max-product Meyer-König and Zeller operator

open access: yesDemonstratio Mathematica
Bede et al. (B. Bede, L. Coroianu, and S. G. Gal, Approximation and shape preserving properties of the nonlinear Meyer-König and Zeller operator of max-product kind, Numer. Funct. Anal. Optim. 31 (2010), no.
Çit Sezin, Doğru Ogün
doaj   +1 more source

Recent improvements in Hurricane Imaging Radiometer’s brightness temperature image reconstruction

open access: yesResults in Physics, 2017
NASA MSFCs airborne Hurricane Imaging Radiometer (HIRAD) uses interferometric aperture synthesis to produce high resolution wide swath images of scene brightness temperature (Tb) distribution at four discrete C-band microwave frequencies (4.0, 5.0, 6.0 ...
Sayak K. Biswas, Daniel J. Cecil
doaj   +1 more source

Enhancing the accuracy and efficiency of two uniformly convergent numerical solvers for singularly perturbed parabolic convection–diffusion–reaction problems with two small parameters

open access: yesDemonstratio Mathematica
This study is devoted to designing two hybrid computational algorithms to find approximate solutions for a class of singularly perturbed parabolic convection–diffusion–reaction problems with two small parameters.
Ansari Khursheed J.   +2 more
doaj   +1 more source

Fiber-optic filter fluorometer for emission detection of Protoporphyrin IX and its direct precursors – A preliminary study for improved Photodynamic Therapy applications

open access: yesResults in Physics, 2018
In this work we present first results of a laboratory manufactured filter-fluorometer to study differences in intensity and position of the main peaks of three porphyrins that appear during the Heme-Synthesis. Porphyrins play a major role in Photodynamic
Rainer Landes   +5 more
doaj   +1 more source

A theoretical study on resistance of electrolytic solution: Measurement of electrolytic conductivity

open access: yesResults in Physics, 2019
We propose a theoretical approach to determine the conductivity of electrolytic solution using sine waveform voltage as a triggering signal. The approach is based on the acquisition of the complex impedance in two-electrode conductance cell by analyzing ...
Liyue Su, Xiaodong Liao, Zheng Huang
doaj   +1 more source

A new kind of Durrmeyer-Stancu-type operators

open access: yesDemonstratio Mathematica
The objective of this study is to examine a class of positive linear operators, defined in terms of the bψ,kλ,μ{b}_{\psi ,k}^{\lambda ,\mu } basis and to analyze their approximation properties. Direct estimates for the (λ,μ)\left(\lambda ,\mu )-Durrmeyer-
Cai Qing-Bo   +2 more
doaj   +1 more source

Optimal polynomial meshes and Caratheodory-Tchakaloff submeshes on the sphere [PDF]

open access: yes, 2016
Using the notion of Dubiner distance, we give an elementary proof of the fact that good covering point configurations on the 2-sphere are optimal polynomial meshes.
Leopardi, Paul   +2 more
core   +1 more source

Predicting the solution of fractional order differential equations with Artificial Neural Network

open access: yesPartial Differential Equations in Applied Mathematics
The present paper aims to propose an approximation method of Caputo fractional operator using discretization based on quadrature theory to minimize the error function for an Artificial Neural Network (ANN) with higher convergence rate.
A.M. Khan, Sanjay Gaur, D.L. Suthar
doaj   +1 more source

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