Results 1 to 10 of about 119,617,328 (270)

Accuracy Assessment of LiDAR-Derived Digital Elevation Models Based on Approximation Theory

open access: yesRemote Sensing, 2015
The cumulative error at a point in a LiDAR-derived DEM consists of three components: propagated LiDAR-sensor error, propagated ground error, and interpolation error.
XiaoHang Liu, Hai Hu, Peng Hu
doaj   +1 more source

The spaces of exponential type vectors of complex degrees of positive operators

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2010
New classes of interpolation spaces of exponential type vectors of complex degrees of positive operators are defined. Properties of the approximation spaces generated by the considered interpolation spaces are investigated.
Dmytryshyn M.I.
doaj  

Analysis of relaxation time dependences on influencing factors in conducting oxides based on SnO2:Sb

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки
Background. Transparent conducting oxides (TCOs) based on SnO₂:Sb are promising materials for transparent electrodes in optoelectronic devices. Understanding the mechanisms of charge carrier conductivity and relaxation in these materials is crucial for ...
T.O. Zinchenko   +5 more
doaj   +1 more source

Non-linear dynamics of flexible shell structures

open access: yesComputer Assisted Methods in Engineering and Science, 2023
The initial-boundary value problem in the weak form is formulated for the general six-field non-linear theory of branched shell structures. The extended time-stepping algorithm of the Newmark type is worked out for the non-linear dynamic analysis on the
Jacek Chróścielewski   +2 more
doaj  

Fast interpolation grids for the Drell–Yan process

open access: yesEuropean Physical Journal C: Particles and Fields
Modern analyses of experimental data from hadron colliders rely on theory predictions at high orders in perturbation theory and a variety of input settings.
Juan Cruz–Martinez   +2 more
doaj   +1 more source

On the properties for families of function classes over harmonic intervals and their embedding relation with Besov spaces

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
The article is dedicated to the issues of studying the approximation of functions by trigonometric polynomials with a spectrum from special sets. In this paper, these special sets are harmonic intervals.
G.A. Yessenbayeva, L.A. Serikova
doaj   +1 more source

Generalized Cardinal Polishing Splines Signal Reconstruction

open access: yesMathematics
Sampling and reconstruction are indispensable processes in signal processing, and appropriate foundations are crucial for spline reconstruction models.
Fangli Sun, Zhanchuan Cai
doaj   +1 more source

Spline coalescence hidden variable fractal interpolation functions

open access: yesJournal of Applied Mathematics, 2006
This paper generalizes the classical spline using a new construction of spline coalescence hidden variable fractal interpolation function (CHFIF). The derivative of a spline CHFIF is a typical fractal function that is self-affine or non-self-affine ...
A. K. B. Chand, G. P. Kapoor
doaj   +1 more source

Numerical investigation of the finite superelement method for the 3D elasticity problems

open access: yesMathematical Modelling and Analysis, 2007
The results of numerical investigation of the Finite Superelement Method (FSEM) for the solution of 3D elasticity problems are given. A definition of FSEM is proposed, and the general theory is briefly explained.
Mikhail Galanin   +2 more
doaj   +1 more source

ABOUT ADVANCED ALGORITHM OF STATISTICAL SIMULATION OF SEISMIC NOISE IN THE FLAT OBSERVATION AREA FOR DETERMINATION THE FREQUENCY CHARACTERISTICS OF GEOLOGICAL ENVIRONMENT

open access: yesВісник Київського національного університету імені Тараса Шевченка. Серія Геологія
The article is devoted to the theory and methods of random process and field statistical simulation on the basis of their spectral decomposition and modified Kotelnikov-Shennon interpolation sums, as well as using these methods in environmental ...
Z. Vyzhva, K. Fedorenko, A. Vyzhva
doaj   +1 more source

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