Results 11 to 20 of about 442,794 (160)
Accelerometer application mathematical model
Lietuvos Matematikos Rinkinys, 2023 The positioning problem considered in this paper is an attempt to find system’s of a few points position using accelerations. Today’s industry provides with various types of accelerometers suitable for acceleration measure.
Vincas Benevičius +1 more
doaj +3 more sources
Anisotropic Cosmological Model in a Modified Theory of Gravitation
Universe, 2021 Current observations indicate that, on a large enough scale, the universe is homogeneous and isotropic. However, this does not preclude the possibility of some anisotropy having occurred during the early stages of the evolution of the universe, which ...
Rishi Kumar Tiwari +3 more
doaj +1 more source
Multigrid methods for improving the variational data assimilation in numerical weather prediction [PDF]
Tellus: Series A, Dynamic Meteorology and Oceanography, 2014 Two conditions are needed to solve numerical weather prediction models: initial condition and boundary condition. The initial condition has an especially important bearing on the model performance.
Youn-Hee Kang +2 more
doaj +1 more source
FLRW Cosmological Models with Dynamic Cosmological Term in Modified Gravity
Universe, 2021 Although the standard lambda cold dark matter cosmological model is quite successful in describing the universe, there are still several issues that are still not resolved.
Rishi Kumar Tiwari +2 more
doaj +1 more source
Mathematical Analysis of Fractal-Fractional Mathematical Model of COVID-19
Fractal and Fractional, 2023 In this work, we modified a dynamical system that addresses COVID-19 infection under a fractal-fractional-order derivative. The model investigates the psychological effects of the disease on humans. We establish global and local stability results for the
Muhammad Sinan, Nadiyah Hussain Alharthi
doaj +1 more source
Entropy measures of the metal–organic network via topological descriptors
Main Group Metal Chemistry, 2023 A family of chemical compounds known as metal–organic networks (MONs) is composed mainly of clusters of metal ions with organic ligands. It can increase volatility or make substances soluble in organic solvents.
Zhang Xiujun +4 more
doaj +1 more source
Charged strange stellar model describing by Tolman V metric
Results in Physics, 2021 This paper deals with the existence of a compact stellar object, precisely strange (quark) star, in the framework of Einstein’s General Theory of Relativity with Tolman V metric potential, which is one of the simplest forms of potential among his ...
M.K. Jasim +5 more
doaj +1 more source
FLRW Universe in f(R,Lm) Gravity with Equation of State Parameter
East European Journal of Physics, 2023 Available observational data regarding current cosmological characteristics suggest that the universe is, to a large extent, both isotropic and homogeneous on a large scale.
Bhupendra Kumar Shukla +3 more
doaj +1 more source
Estimation of HIV infection mathematical model]{Estimation of HIV infection mathematical model parameters using modified LHPM [PDF]
Mathematics and Computational Sciences, 2023 In this paper, modified laplace homotopy perturbation method(LHPM) is implemented to give approximate and analytical solutions of nonlinear ordinary differential equation systems model for HIV infection .
Mitra Moeini, Mehrzad Ghorbani
doaj +1 more source
Mathematical Modelling Economy
Bulletin of the South Ural State University. Series "Mathematical Modelling, Programming and Computer Software", 2023 Summary: The article presents an overview of the main methods of economic modelling used in scientific research over the past twenty years. This overview does not claim to cover all areas, methods and models used in scientific research in the field of economics, since it is impossible to do within a single article. We consider mathematical modelling of
openaire +3 more sources