Temat: splines functions - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A numerical procedure for filtering and efficient high-order signal differentiation
Autorzy:: Ibrir, S.
Diop, S.
Powiązania:: https://bibliotekanauki.pl/articles/907392.pdf
Data publikacji:: 2004
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: walidacja krzyżowa
różniczkowanie sygnału
wygładzanie
generalized cross validation
smoothing
differentiation
splines functions
optimization
Opis:: In this paper, we propose a numerical algorithm for filtering and robust signal differentiation. The numerical procedure is based on the solution of a simplified linear optimization problem. A compromise between smoothing and fidelity with respect to the measurable data is achieved by the computation of an optimal regularization parameter that minimizes the Generalized Cross Validation criterion (GCV). Simulation results are given to highlight the effectiveness of the proposed procedure.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2004, 14, 2; 201-208
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Crack analysis in bimaterial interfaces using T-spline based XIGA
Autorzy:: Habib, S. H.
Belaidi, I.
Powiązania:: https://bibliotekanauki.pl/articles/279517.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: extended isogeometric analysis
T-splines
bimaterial interface cracks
enrichment functions
local refinement
Opis:: Analysis-suitable T-splines are used for the modeling and analyzing of cracks in bimaterial interfaces within the framework of an extended isogeometric analysis (XIGA). The crack tip enrichment functions of bimaterial interface cracks are implemented to reproduce singular fields, and the signed distance functions are used to treat the crack face and the interface in the models. A compatible local refinement algorithm is applied to refine location of the crack and the interface, which helps one to avoid produce excessive propagation of control points. The mixed mode stress intensity factors (SIFs) which are evaluated by the interaction integral (M-integral) are used as analysis parameters. Numerical simulations are performed to analyze the problem and to examine the efficiency of the proposed method. The obtained results are compared with other available results.
Źródło:: Journal of Theoretical and Applied Mechanics; 2017, 55, 1; 55-68
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: On some application of biorthogonal spline systems to integral equations
Autorzy:: Wronicz, Z.
Powiązania:: https://bibliotekanauki.pl/articles/255125.pdf
Data publikacji:: 2005
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: operator associated with step functions
B-splines
integral equation
approximation
Opis:: We consider an operator PN : LP(I) -> Sn(deltaN), such that PN f = f for f mem Sn(deltaN), where Sn(deltaN) is the space of splines of degree n with repect to a given partition deltaN of the interval I. This operator is defined by means of a system of step functions biorthogonal to B-splines. Then we use this operator to approximation to the solution of the Fredholm integral equation of the second kind. Convergence rates for the aproximation of the solution of this equation are given.
Źródło:: Opuscula Mathematica; 2005, 25, 1; 149-160
1232-9274
2300-6919
Pojawia się w:: Opuscula Mathematica
Dostawca treści:: Biblioteka Nauki

Artykuł

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