Results 11 to 20 of about 21,807,131 (299)
Numerical treatments for some stochastic–deterministic chaotic systems
Results in Physics, 2022 We aim in this paper to propose classes of nonlinear ordinary differential equations based on the concept of piecewise differentiation. These classes are known as piecewise deterministic–stochastic differential equations or vice versa.
N.H. Sweilam +4 more
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Journal of New Theory, 2023 In this study, a mathematical model describing diabetes mellitus and its complications in a population is considered. Since standard numerical methods can lead to numerical instabilities, it aims to solve the problem using a nonstandard method. Among the
İlkem Turhan Çetinkaya
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Non-Standard Discrete RothC Models for Soil Carbon Dynamics
Axioms, 2021 Soil Organic Carbon (SOC) is one of the key indicators of land degradation. SOC positively affects soil functions with regard to habitats, biological diversity and soil fertility; therefore, a reduction in the SOC stock of soil results in degradation ...
Fasma Diele +2 more
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Nonstandard models, solar neutrinos, and large θ 13 [PDF]
, 2013 Solar neutrino experiments have yet to see directly the transition region between matter-enhanced and vacuum oscillations. The transition region is particularly sensitive to models of nonstandard neutrino interactions and propagation.
R. Bonventre +5 more
semanticscholar +1 more source
Nonstandard Finite Difference Method Applied to a Linear Pharmacokinetics Model
Bioengineering, 2017 We extend the nonstandard finite difference method of solution to the study of pharmacokinetic–pharmacodynamic models. Pharmacokinetic (PK) models are commonly used to predict drug concentrations that drive controlled intravenous (I.V.) transfers (or ...
Oluwaseun Egbelowo +2 more
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Nonstandard Functional Interpretations and Categorical Models [PDF]
Notre Dame Journal of Formal Logic, 2017 Recently, the second author, Briseid and Safarik introduced nonstandard Dialectica, a functional interpretation that is capable of eliminating instances of familiar principles of nonstandard arithmetic - including overspill, underspill, and generalisations to higher types - from proofs.
Hadzihasanovic, A., van den Berg, B.
openaire +5 more sources
Lyapunov direct method for investigating stability of nonstandard finite difference schemes for metapopulation models [PDF]
, 2017 In this paper nonstandard finite difference (NSFD) schemes of two metapopulation models are constructed. The stability properties of the discrete models are investigated by the use of the Lyapunov stability theorem.
Q. A. Dang, M. T. Hoang
semanticscholar +1 more source
Advances in Difference Equations, 2020 The current effort is devoted to investigating and exploring the stochastic nonlinear mathematical pandemic model to describe the dynamics of the novel coronavirus.
Wasfi Shatanawi +5 more
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A hybrid fractional optimal control for a novel Coronavirus (2019-nCov) mathematical model
Journal of Advanced Research, 2021 Introduction: Coronavirus COVID-19 pandemic is the defining global health crisis of our time and the greatest challenge we have faced since world war two. To describe this disease mathematically, we noted that COVID-19, due to uncertainties associated to
N.H. Sweilam +2 more
doaj +1 more source
Axiomatics for the external numbers of nonstandard analysis [PDF]
, 2017 Neutrices are additive subgroups of a nonstandard model of the real numbers. An external number is the algebraic sum of a nonstandard real number and a neutrix.
Berg, Imme van den, Dinis, Bruno
core +2 more sources