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Solving non-homogeneous non-Linear difference and differential equations by using additive and multiplicative derivative and integral with applications [PDF]

open access: yesMathematics and Computational Sciences
Difference equations are discrete analogy of the differential equations. These equations appearin mathematical modeling of physics and engineering problems, economic and population subjects thatdeal with discrete data and variables.In this article, we ...
Mohammad Jahanshahi   +2 more
doaj   +2 more sources

Stability of Equilibrium Points of Fractional Difference Equations with Stochastic Perturbations [PDF]

open access: yesAdvances in Difference Equations, 2008
It is supposed that the fractional difference equation xn+1=(μ+∑j=0kajxn−j)/(λ+∑j=0kbjxn−j), n=0,1,…, has an equilibrium point x^ and is exposed to additive stochastic perturbations type of σ(xn−x^)ξn+1 that are ...
Beatrice Paternoster, Leonid Shaikhet
doaj   +3 more sources

Two-dimensional-one-dimensional splitting scheme for the numerical solution of problems of transport of multicomponent suspensions using θ coordinates [PDF]

open access: yesE3S Web of Conferences, 2023
The work considers the spatial-three-dimensional problem of suspension transport, which takes into account many parameters and processes (multicomponent fractional composition of suspension, particle sedimentation rate, suspension distribution, intensity
Sukhinov Alexander   +1 more
doaj   +1 more source

MULTISPECTRAL IMAGE RESTORATION USING A VECTOR-VALUED REACTION-DIFFUSION BASED MIXED NOISE REMOVAL TECHNIQUE [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
A novel multispectral image filtering technique is proposed in this article. Since the multispectral images are often corrupted by mixed Poisson-Gaussian noise during the sensing and acquisition process, a nonlinear anisotropic diffusion-based ...
T. Barbu
doaj   +1 more source

LINEAR STOCHASTIC DISTRIBUTED MODEL OF MONEY ACCUMULATION IN THE FORM OF A STATE SPACE

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2021
The article deals with the problem of the passive parametric identification of systems for modeling the evolution of money savings income and expenses of one household using a linear stochastic distributed model in the form of a state space taking into ...
K. M. Bazikova   +2 more
doaj   +1 more source

Origin-based biomass allometric equations, biomass partitioning, and carbon concentration variations of planted and natural Larix gmelinii in northeast China

open access: yesGlobal Ecology and Conservation, 2020
The area of larch (Larix gmelinii) plantations in northeast China has increased following the massive afforestation program implemented by China’s central government to provide biomass for global carbon sink and the development of industrial sectors ...
Faris Rafi Almay Widagdo   +3 more
doaj   +1 more source

Urban Planning Image Feature Enhancement and Simulation Based on Partial Differential Equation Method

open access: yesAdvances in Mathematical Physics, 2021
Based on the introduction of the basic ideas and related technologies of partial differential equations, as well as the method of path planning, the application of partial differential equations in solving urban path planning is studied.
Duo Li
doaj   +1 more source

Asymptotic behavior of non-autonomous fractional p-Laplacian equations driven by additive noise on unbounded domains

open access: yesBulletin of Mathematical Sciences, 2021
This paper deals with the asymptotic behavior of solutions to non-autonomous, fractional, stochastic p-Laplacian equations driven by additive white noise and random terms defined on the unbounded domain ℝN.
Renhai Wang, Bixiang Wang
doaj   +1 more source

Spirometric reference equations for Cameroonians aged 4 to 89 years derived using lambda, mu, sigma (LMS) method

open access: yesBMC Pulmonary Medicine, 2021
Background Spirometric reference values are well known in several ethnic groups but the normative spirometric values of blacks living in Africa have been less studied.
Eric Walter Pefura-Yone   +9 more
doaj   +1 more source

Thermal-structural hybrid Lagrangian solver and numerical simulation-based correction of shape deformation of stainless-steel parts produced by laser powder bed fusion

open access: yesScientific Reports, 2023
An efficient thermal-structural numerical solver for Additive Manufacturing has been developed based on a modified Lagrangian approach to solve the energy conservation equations in differential form.
Ilya Tsivilskiy, Igor Shishkovsky
doaj   +1 more source

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