Results 21 to 30 of about 152,912 (263)

Closed-Form Solutions of Linear Ordinary Differential Equations with General Boundary Conditions

open access: yesAxioms, 2021
This paper deals with the solution of boundary value problems for ordinary differential equations with general boundary conditions. We obtain closed-form solutions in a symbolic form of problems with the general n-th order differential operator, as well ...
Efthimios Providas   +2 more
doaj   +1 more source

A Closed-Form Solution to Photorealistic Image Stylization [PDF]

open access: yes, 2018
Photorealistic image stylization concerns transferring style of a reference photo to a content photo with the constraint that the stylized photo should remain photorealistic. While several photorealistic image stylization methods exist, they tend to generate spatially inconsistent stylizations with noticeable artifacts.
Yijun Li 0001   +4 more
openaire   +2 more sources

Closed-form solutions for the Lévy-stable distribution [PDF]

open access: yesPhysical Review E, 2018
The Lévy-stable distribution is the attractor of distributions which hold power laws with infinite variance. This distribution has been used in a variety of research areas, for example in economics it is used to model financial market fluctuations and in statistical mechanics as a numerical solution of fractional kinetic equations of anomalous ...
Arias-Calluari, Karina   +2 more
openaire   +3 more sources

Abundant closed-form wave solutions to the simplified modified Camassa-Holm equation

open access: yesJournal of Ocean Engineering and Science, 2023
The simplified modified Camassa-Holm (SMCH) equation is an important nonlinear model equation for identifying various wave phenomena in ocean engineering and science. The new auxiliary equation (NAE) method has been applied to the SMCH equation.
S M Rayhanul Islam   +2 more
doaj   +1 more source

A Closed Form Solution for a Nonlinear Wiener Filter [PDF]

open access: yes2006 IEEE International Conference on Acoustics Speed and Signal Processing Proceedings, 2006
In this paper a nonlinear extension to the Wiener filter is presented. A direct approach has been devised of replacing the autocorrelation function with a novel function called correntropy, derived from ideas on kernel-based learning theory and information theoretic learning.
Puskal P. Pokharel   +3 more
openaire   +1 more source

Closed-Form Solutions to Differential Equations via Differential Evolution

open access: yesDiscrete Dynamics in Nature and Society, 2015
We focus on solving ordinary differential equations using the evolutionary algorithm known as differential evolution (DE). The main purpose is to obtain a closed-form solution to differential equations.
L. Mex   +2 more
doaj   +1 more source

A Survey on Natural Image Matting With Closed-Form Solutions

open access: yesIEEE Access, 2019
Natural image matting refers to the interactive process of estimating the foreground opacity (alpha matte) of an input image and extracting the foreground layer.
Xiaoqiang Li, Jide Li, Hong Lu
doaj   +1 more source

A novel closed form solution for ultrasound calibration [PDF]

open access: yes2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano (IEEE Cat No. 04EX821), 2005
This paper describes a new robust method for calibration of ultrasound probe (2D/3D). Prior to calibration, a position sensor is attached to the probe for tagging each image/volume with its position and orientation in space. The localization process of the acquired image/volume in 3D space critically requires a calibration procedure that determines its
Emad Boctor   +5 more
openaire   +1 more source

Closed-Form Exact Solutions for the Unforced Quintic Nonlinear Oscillator

open access: yesAdvances in Mathematical Physics, 2017
Closed-form exact solutions for the periodic motion of the one-dimensional, undamped, quintic oscillator are derived from the first integral of the nonlinear differential equation which governs the behaviour of this oscillator.
Augusto Beléndez   +5 more
doaj   +1 more source

Adequate wide-ranging closed-form wave solutions to a nonlinear biological model

open access: yesPartial Differential Equations in Applied Mathematics, 2021
The auxiliary equation method and the extended tanh function method are put in use to establish wide-ranging, further general and standard closed-form traveling wave solutions to the time fractional nonlinear biological model.
M. Al-Amin, M. Nurul Islam, M. Ali Akbar
doaj   +1 more source

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