Results 11 to 20 of about 220,647 (316)

Existence of solutions for some non-Fredholm integro-differential equations with mixed diffusion [PDF]

open access: yes, 2021
We establish the existence in the sense of sequences of solutions for certain integro-differential type equations in two dimensions involving the normal diffusion in one direction and the anomalous diffusion in the other direction in H-2(R-2) via the ...

core   +1 more source

Differential diffusion analyzer [PDF]

open access: yesAerosol Science and Technology, 2017
In this article, a proof of concept of a new measurement instrument, differential diffusion analyzer (DDA), is established.
A. Arffman   +3 more
openaire   +1 more source

On the application of the qualitative theory of differential equations to a problem of heat and mass transfer [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2023
The possibilities of applying the qualitative theory of differential equations to one problem of heat and mass transfer in multilayer planar semiconducting structures are studied. The consideration is carried out on the example of a mathematical model of
Turtin, Dmitry V.   +2 more
doaj   +1 more source

Image compression with anisotropic diffusion [PDF]

open access: yes, 2008
Compression is an important field of digital image processing where well-engineered methods with high performance exist. Partial differential equations (PDEs), however, have not much been explored in this context so far. In our paper we introduce a novel
Welk, Martin   +19 more
core   +1 more source

Thermochemical Properties of PM2.5 as Indicator of Combustion Phase of Fires

open access: yesAtmosphere, 2018
Past studies suggest that certain properties of fire emitted particulate matter (PM) relate to the combustion phase (flaming, smoldering) of biomass burning, but to date there has been little consideration of such properties for use as combustion phase ...
Yuch-Ping Hsieh   +2 more
doaj   +1 more source

Similarity Solutions to Nonlinear Diffusion/Harry Dym Fractional Equations

open access: yesAdvances in Mathematical Physics, 2021
By using scalar similarity transformation, nonlinear model of time-fractional diffusion/Harry Dym equation is transformed to corresponding ordinary fractional differential equations, from which a travelling-wave similarity solution of time-fractional ...
Chao Yue   +3 more
doaj   +1 more source

Solvability of some systems of non-fredholm integro-differential equations with mixed diffusion [PDF]

open access: yes, 2022
We prove the existence in the sense of sequences of solutions for some system of integro-differential type equations in two dimensions containing the normal diffusion in one direction and the anomalous diffusion in the other direction in H-2 (R-2, R-N ...

core   +1 more source

Distinctive Shape Functions of Fractional Differential Quadrature for Solving Two-Dimensional Space Fractional Diffusion Problems

open access: yesFractal and Fractional, 2023
The aim of this study is to utilize a differential quadrature method with various kernels, such as Lagrange interpolation and discrete singular convolution, to tackle problems related to the Riesz fractional diffusion equation and the Riesz fractional ...
Abdelfattah Mustafa   +4 more
doaj   +1 more source

Differentiating diffuse auroras based on phenomenology [PDF]

open access: yesAnnales Geophysicae, 2018
Abstract. There is mounting evidence which suggests that pulsating auroral patches often move with convection. This study is an initial step at identifying the differences between patches that move with convection and those that do not. While many properties of pulsating patches vary, here we outline criteria for separating pulsating auroral patches ...
Eric Grono, Eric Donovan
openaire   +3 more sources

Brain Imaging in Epilepsy-Focus on Diffusion-Weighted Imaging

open access: yesDiagnostics, 2022
Epilepsy is a common neurological disorder; 1% of people worldwide have epilepsy. Differentiating epileptic seizures from other acute neurological disorders in a clinical setting can be challenging. Approximately one-third of patients have drug-resistant
Tzu-Hsin Huang   +3 more
doaj   +1 more source

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