Results 1 to 10 of about 11,306,054 (330)
OBTAINING POTENTIAL FIELD SOLUTIONS WITH SPHERICAL HARMONICS AND FINITE DIFFERENCES [PDF]
, 2011 Potential magnetic field solutions can be obtained based on the synoptic magnetograms of the Sun. Traditionally, a spherical harmonics decomposition of the magnetogram is used to construct the current- and divergence-free magnetic field solution.
G. Tóth +2 more
semanticscholar +4 more sources
Journal of Physics: Conference Series, 2021 In this paper, we study the influence of applying the well-known finite differences method on medical and physical images. These images will be used as coefficients in the steps of the solution after the images being imported and converted to arrays. The
M. Rasheed +6 more
semanticscholar +1 more source
Mathematical Biosciences and Engineering, 2022 Epidemic spread models are useful tools to study the spread and the effectiveness of the interventions at a population level, to an epidemic. The workhorse of spatially homogeneous class models is the SIR-type ones comprising ordinary differential ...
Margaritis Kostoglou +13 more
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Reactive-Advective-Diffusive Models for the Growth of Gliomas Treated with Radiotherapy
Semina: Ciências Exatas e Tecnológicas, 2023 Gliomas are malignant brain tumors responsible for 50% of primary human brain cancer cases. They have a combination of rapid growth and invasiveness, and high fatality rates with a median survival time of one year.
Bruno da Silva Machado +2 more
doaj +1 more source
Devito: an embedded domain-specific language for finite differences and geophysical exploration [PDF]
Geoscientific Model Development, 2018 . We introduce Devito, a new domain-specific language for implementing high-performance finite-difference partial differential equation solvers. The motivating application is exploration seismology for which methods such as full-waveform inversion and ...
M. Louboutin +7 more
semanticscholar +1 more source
Particularities of mathematical modeling of deformation processes for arched and panel designs of composites with large displacements and rotation angles [PDF]
INCAS Bulletin, 2020 In aerospace systems and automotive industry flexible elastic and thin-walled structures are widely used. The adequate mathematical models are in the process of development as well as numerical algorithms for examination of the features of processes of ...
Vladimir G. DMITRIEV +2 more
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Adaptive radial basis function–generated finite differences method for contact problems [PDF]
International Journal for Numerical Methods in Engineering, 2018 This paper proposes an original adaptive refinement framework using radial basis function–generated finite differences method. Node distributions are generated with a Poisson disc sampling–based algorithm from a given continuous density function, which ...
J. Slak, G. Kosec
semanticscholar +1 more source
Analysis of Beams on Non-Linear Elastic Winkler Foundation [PDF]
Engineering and Technology Journal, 2005 This paper deals with thin beams resting on non-linear Winkler foundations by using the secant modulus approach to specify the modulus of subgrade reaction.
Mustafa Al-Ani
doaj +1 more source
Quasi-harmonic self-oscillations in discrete time: analysis and synthesis of dynamic systems
Физика волновых процессов и радиотехнические системы, 2022 For sampling of time in a differential equation of movement of Thomson type oscillator (generator) it is offered to use a combination of the numerical method of finite differences and an asymptotic method of the slowl-changing amplitudes.
Valery V. Zaitsev, Alexander V. Karlov
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Multiplicative finite difference methods [PDF]
Quarterly of Applied Mathematics, 2009 Based on multiplicative calculus, the finite difference schemes for the numerical solution of multiplicative differential equations and Volterra differential equations are presented. Sample problems were solved using these new approaches.
Rıza, Mustafa +2 more
openaire +5 more sources