Results 31 to 40 of about 354,492 (314)
Моделирование и анализ информационных систем, 2015 A version of the method of collocations and least residuals is proposed for the numerical solution of the Poisson equation in polar coordinates on non-uniform grids.
E. V. Vorozhtsov, V. P. Shapeev
doaj +1 more source
Journal of High Energy Physics, 2021 We derive a general exact form of the phase space distribution function and the thermal expectation values of local operators for the free quantum scalar field at equilibrium with rotation and acceleration in flat space-time without solving field ...
F. Becattini, M. Buzzegoli, A. Palermo
doaj +1 more source
DYNAMIC PROGRAMMING FOR CURVED REFLECTION SYMMETRY DETECTION IN SEGMENTED IMAGES [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023 This study proposes a method for detecting curved reflection symmetry in binary and grayscale images. The crucial step is to construct a curvilinear symmetry axis generating a nonlinear transformation of the image coordinates that projects the curve on ...
N. Lomov, O. Seredin
doaj +1 more source
Modeling of second-harmonic generation in periodic nanostructures by the Fourier modal method with matched coordinates [PDF]
, 2018 We present an advanced formulation of the Fourier modal method for analyzing the second-harmonic generation in multilayers of periodic arrays of nanostructures.
Defrance, Josselin +2 more
core +1 more source
Transfer Equation in General Curvilinear Coordinates
Open Astronomy, 2011 The differential operator of the monochromatic polarized radiative transfer equation is studied in case of statistically homogeneous turbid medium in Euclidean three-dimensional space, with arbitrary curvilinear coordinate system defined in it.
Freimanis J.
doaj +1 more source
Anharmonic force field and vibrational frequencies of tetrafluoromethane (CF$_4$) and tetrafluorosilane (SiF$_4$) [PDF]
, 1999 Accurate quartic anharmonic force fields for CF$_4$ and SiF$_4$ have been calculated using the CCSD(T) method and basis sets of $spdf$ quality. Based on the {\it ab initio} force field with a minor empirical adjustment, the vibrational energy levels of ...
Edwin L. Sibert +4 more
core +2 more sources
Calculation of water rise in curvilinear capillaries by tangent angle to the meniscus
Advanced Engineering Research, 2015 The work objectives are the simulation of the water distribution in the symmetric multilevel capillary systems with curvilinear capillaries, and the calculation of water rise in the curvilinear capillaries by the angle of inclination to the horizontal ...
Iosif A Kipnis, Yury M. Vernigorov
doaj +1 more source
Stresses and deformations of an eccentric cylindrical cam during hydro-joining [PDF]
MATEC Web of Conferences, 2021 The stresses and deformations of an eccentric cylindrical cam during the process of hydro-joining have been calculated in orthogonal curvilinear coordinates according to the mechanical model of the cam and governing equations in terms of appropriate ...
Wang Kelin +4 more
doaj +1 more source
Journal of the Mechanical Behavior of Materials, 2014 Equilibrium equations and boundary conditions of the strain gradient theory in arbitrary curvilinear coordinates have been obtained. Their special form for an axisymmetric plane strain problem is also given.
Guzev Mikhail +3 more
doaj +1 more source
Finite volume method in curvilinear coordinates for hyperbolic conservation laws [PDF]
, 2011 International audienceThis paper deals with the design of finite volume approximation of hyperbolic conservation laws in curvilinear coordinates. Such coordinates are encountered naturally in many problems as for instance in the analysis of a large ...
Bonnement, Audrey +6 more
core +1 more source