Results 1 to 10 of about 17,445 (161)

A Novel Nonlinear Second Order Hyperbolic Partial Differential Equation-Based Image Restoration Algorithm With Directional Diffusion

open access: yesIEEE Access, 2020
Recently, variational and partial differential equation (PDE)-based algorithms have become very important for image restoration. In this study, we propose a new second order hyperbolic PDE model based on directional diffusion for image restoration.
Shuaijie Li, Zhanjiang Zhi
doaj   +3 more sources

Slice holomorphic solutions of some directional differential equations with bounded L-index in the same direction

open access: yesDemonstratio Mathematica, 2019
In the paper we investigate slice holomorphic functions F : ℂn → ℂ having bounded L-index in a direction, i.e. these functions are entire on every slice {z0 + tb : t ∈ℂ} for an arbitrary z0 ∈ℂn and for the fixed direction b ∈ℂn \ {0}, and (∃m0 ∈ ℤ+) (∀m ∈
Bandura Andriy   +2 more
doaj   +2 more sources

Factorized One-Way Wave Equations

open access: yesAcoustics, 2021
The method used to factorize the longitudinal wave equation has been known for many decades. Using this knowledge, the classical 2nd-order partial differential Equation (PDE) established by Cauchy has been split into two 1st-order PDEs, in alignment with
Oskar Bschorr, Hans-Joachim Raida
doaj   +1 more source

Imagery Network Fine Registration by Reference Point Cloud Data Based on the Tie Points and Planes

open access: yesSensors, 2021
Cameras and laser scanners are complementary tools for a 2D/3D information generation. Systematic and random errors cause the misalignment of the multi-sensor imagery and point cloud data.
Mehrdad Eslami, Mohammad Saadatseresht
doaj   +1 more source

Vibration of 2D FG Higher Order Plates using Differential Integral Quadrature Method [PDF]

open access: yesJournal of the Egyptian Society of Tribology, 2022
This article presented a mathematical model to investigate the free vibration behavior of bi-directional (2D) functionally graded plate (FGP) using higher order shear deformation theory.
E. Assie Amr, Mohamed Salwa
doaj   +1 more source

Directed chain stochastic differential equations

open access: yesStochastic Processes and their Applications, 2020
We propose a particle system of diffusion processes coupled through a chain-like network structure described by an infinite-dimensional, nonlinear stochastic differential equation of McKean-Vlasov type. It has both (i) a local chain interaction and (ii) a mean-field interaction.
Detering, Nils   +2 more
openaire   +6 more sources

Cell migration in complex environments: chemotaxis and topographical obstacles [PDF]

open access: yesESAIM: Proceedings and Surveys, 2020
Cell migration is a complex phenomenon that plays an important role in many biological processes. Our aim here is to build and study models of reduced complexity to describe some aspects of cell motility in tissues. Precisely, we study the impact of some
Cucchi Alessandro   +4 more
doaj   +1 more source

Traveling wave with beta derivative spatial-temporal evolution for describing the nonlinear directional couplers with metamaterials via two distinct methods

open access: yesAlexandria Engineering Journal, 2021
This work is reported the analytical solutions for describing the nonlinear directional couplers with metamaterials by including spatial–temporal fractional beta derivative evolution.
M.F. Uddin   +4 more
doaj   +1 more source

Medical Grabbing Servo System with Friction Compensation Based on the Differential Evolution Algorithm

open access: yesChinese Journal of Mechanical Engineering, 2021
This paper introduces a pneumatic finger cylinder servo control system for medical grabbing. First, according to the physical structure of the proportional directional valve and the pneumatic cylinder, the state equation of the gas in the servo system ...
Yeming Zhang   +4 more
doaj   +1 more source

Directional Sparsity in Optimal Control of Partial Differential Equations [PDF]

open access: yesSIAM Journal on Control and Optimization, 2012
We study optimal control problems in which controls with certain sparsity patterns are preferred. For time-dependent problems the approach can be used to find locations for control devices that allow controlling the system in an optimal way over the entire time interval.
Roland Herzog   +2 more
openaire   +1 more source

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