Articles with "moment method" as a keyword



Pointwise Controllability for Degenerate Parabolic Equations by the Moment Method

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Published in 2020 at "Journal of Dynamical and Control Systems"

DOI: 10.1007/s10883-020-09479-1

Abstract: In this paper, we study the pointwise controllability of the one-dimensional degenerate heat equation. Necessary and sufficient conditions for approximate and null controllability are proved. Our approach is mainly based on the moment method developed… read more here.

Keywords: moment method; pointwise controllability; controllability degenerate; controllability ... See more keywords

Tchebichef-Hermite image moment method: A novel tool for chemometric analysis of three-dimensional spectra

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Published in 2017 at "Chemometrics and Intelligent Laboratory Systems"

DOI: 10.1016/j.chemolab.2017.05.018

Abstract: Abstract Image moment methods have been applied to the qualitative and quantitative analyses in analytical chemistry owing to their availability. As another attractive image moment method, Tchebichef-Hermite moment (THM) method was proposed for the first… read more here.

Keywords: moment; image moment; method; spectra ... See more keywords

Study on pressure fluctuation characteristics in sand-plugging wellbore using the Euler-moment method

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Published in 2025 at "Physics of Fluids"

DOI: 10.1063/5.0236510

Abstract: Pressure fluctuations caused by sand-plugging during the fracturing process can hinder the displacement of fracturing fluid and reduce the effectiveness of reservoir stimulation. Existing wellbore multiphase flow models struggle to account for the transient distribution… read more here.

Keywords: pressure; wellbore; euler moment; sand plugging ... See more keywords

Flamelet/quadrature-based moment method for modeling laminar sooting pulverized solid fuel flames

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Published in 2025 at "Physics of Fluids"

DOI: 10.1063/5.0282079

Abstract: Soot formation in a laminar pulverized coal flame is modeled with an adapted quadrature-based moment method (QBMM) incorporating detailed gas phase kinetics. The formation of polycyclic aromatic hydrocarbons (PAHs) from pyrolysis, and the subsequent soot… read more here.

Keywords: chemistry; quadrature based; tar; soot ... See more keywords

A Variant of the Second-Moment Method for k-Eigenvalue Calculations

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Published in 2024 at "Nuclear Science and Engineering"

DOI: 10.1080/00295639.2024.2303107

Abstract: Abstract The second-moment (SM) method is a linear variant of the quasi-diffusion (QD) method for accelerating the iterative convergence of Sn source calculations. It has several significant advantages relative to the QD method, diffusion synthetic… read more here.

Keywords: second moment; method; method eigenvalue; eigenvalue calculations ... See more keywords

Analytical Extensions of the Generalized Moment Method for the Smoluchowski Coagulation Equation

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Published in 2024 at "Journal of Computational and Theoretical Transport"

DOI: 10.1080/23324309.2024.2419002

Abstract: Abstract This study extends the analytical framework of the generalized moment method for the Smoluchowski coagulation equation (SCE) to consider a wider range of kernels that can be associated with coagulation models, including those exhibiting… read more here.

Keywords: method smoluchowski; coagulation equation; generalized moment; smoluchowski coagulation ... See more keywords

Research on the coagulation law of dielectric nanoparticles in Stokes regime via Taylor expansion moment method.

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Published in 2020 at "Nanotechnology"

DOI: 10.1088/1361-6528/ab841d

Abstract: For the collision and coagulation of dielectric nanoparticles randomly oriented and moving in an electric field, the collision frequency function of the particles in Stokes regime is derived. The numerical solution obtained by the Taylor… read more here.

Keywords: coagulation; taylor expansion; dielectric nanoparticles; expansion moment ... See more keywords

Locally Corrected Nyström to Moment Method Conversion for Volume Integral Equations

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Published in 2019 at "IEEE Transactions on Magnetics"

DOI: 10.1109/tmag.2019.2891215

Abstract: In this paper, a technique to convert a locally corrected Nyström discretization into a moment method discretization is detailed. The method is general and does not rely directly on any specific relationship between the basis… read more here.

Keywords: volume integral; moment; locally corrected; corrected nystr ... See more keywords

The moment method of Lebesgue aggregation and spectrum recovery in particle transport problems

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Published in 2017 at "Mathematical Models and Computer Simulations"

DOI: 10.1134/s2070048217030115

Abstract: The method of spectral moments that simplifies the calculation of nonmonotonic multiresonance spectra of neutrons or photons in the problems of nuclear technologies, radiating plasma and atmospheric radiation is developed. The particle distribution function is… read more here.

Keywords: lebesgue aggregation; transport; method lebesgue; particle ... See more keywords

Application of L-moment method for regional frequency analysis of meteorological drought across the Loess Plateau, China

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Published in 2022 at "PLoS ONE"

DOI: 10.1371/journal.pone.0273975

Abstract: Water shortages have always been the primary bottleneck for the healthy and sustainable development of the ecological environment on the Loess Plateau (LP). Proper water resource management requires knowledge of the spatiotemporal characteristics of precipitation… read more here.

Keywords: frequency; drought; moment method; loess plateau ... See more keywords