Results 31 to 40 of about 3,311,828 (349)
Analytic continuation of stochastic mechanics [PDF]
Journal of Mathematical Physics, 2022 We study a (relativistic) Wiener process on a complexified (pseudo-)Riemannian manifold. Using Nelson’s stochastic quantization procedure, we derive three equivalent descriptions for this problem. If the process has a purely real quadratic variation, we obtain the one-sided Wiener process that is encountered in the theory of Brownian motion.
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Mechanisms of Lagrangian Analyticity in Fluids [PDF]
Archive for Rational Mechanics and Analysis, 2019 Certain systems of inviscid fluid dynamics have the property that for solutions that are only slightly better than differentiable in Eulerian variables, the corresponding Lagrangian trajectories are analytic in time. We elucidate the mechanisms in fluid dynamics systems that give rise to this automatic Lagrangian analyticity, as well as mechanisms in ...
Matthew Hernandez, Matthew Hernandez
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Exact and inexact differentials in the early development of mechanics and thermodynamics [PDF]
Revista Brasileira de Ensino de Física, 2019 We give an account and a critical analysis of the use of exact and inexact differentials in the early development of mechanics and thermodynamics, and the emergence of differential calculus and how it was applied to solve some mechanical problems, such ...
Mário J. de Oliveira
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Numerical-analytical method in reinforced concrete mechanics
Structural Mechanics of Engineering Constructions and Buildings, 2022 A variant of the numerical-analytical method in the nonlinear mechanics of reinforced concrete is proposed. Calculation models make it possible to take into account a number of important factors, such as discrete cracks, the effect of concrete ...
Vladimir I. Kolchunov
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Symmetries in central-force problems [PDF]
Serbian Astronomical Journal, 2003 The two-body problem in central fields (reducible to a central-force problem) models a lot of concrete astronomical situations. The corresponding vector fields (in Cartesian and polar coordinates, extended via collision-blow-up and infinity-blow-up ...
Mioc V., Barbosu M.
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Hyperbolic normal forms and invariant manifolds: Astronomical applications [PDF]
Serbian Astronomical Journal, 2012 In recent years, the study of the dynamics induced by the invariant manifolds of unstable periodic orbits in nonlinear Hamiltonian dynamical systems has led to a number of applications in celestial mechanics and dynamical astronomy.
Efthymiopoulos C.
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Identification of ice-over-water multilayer clouds using multispectral satellite data in an artificial neural network [PDF]
Atmospheric Measurement TechniquesAn artificial neural network (ANN) algorithm, employing several Aqua MODerate-resolution Imaging Spectroradiometer (MODIS) channels, the retrieved cloud phase and total cloud visible optical depth, and temperature and humidity vertical profiles is ...
S. Sun-Mack +4 more
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Results in Physics, 2023 For the system with non-holonomic constraints, the principle of least action does not seem to lead to the equations describing the motion, which are consistent with the physical behaviour. Here, some considerations are developed on this fundamental topic
Umberto Lucia, Giulia Grisolia
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An analytical solution of boundary problems of shell deformation mechanics [PDF]
MATEC Web of Conferences, 2022 This paper proposes an algorithm for the analytical (with a controllable error) solution of boundary-value problems of shell deformation mechanics. Decomposition of partial differential equations is per-formed.
Vinogradov Yuri, Kashfutdinov Bulat
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Advances in classical and analytical mechanics: A reviews of author’s results [PDF]
Theoretical and Applied Mechanics, 2013 A review, in subjective choice, of author’s scientific results in area of: classical mechanics, analytical mechanics of discrete hereditary systems, analytical mechanics of discrete fractional order system vibrations, elastodynamics, nonlinear ...
Hedrih-Stevanović Katica R.
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