Results 31 to 40 of about 10,513 (148)

Approximation procedures for data acquisition in testing systems [PDF]

open access: yesComputer Science Journal of Moldova, 1999
This paper deals with the results of spline approximation functions applied to periodical experimental data and its comparison with polynomial approximation functions.
N. Secrieru
doaj  

Comparison of selected splines for stem form modeling: A case study in Norway spruce

open access: yesAnnals of Forest Research, 2014
Natural cubic spline has been frequently used to represent stem forms, with other spline types rarely involved. Splines are a large class of functions and there are many other spline types which might serve that purpose.
Karel Kuželka, Róbert Marušák
doaj   +1 more source

Thin plate splines for transfinite interpolation at concentric circles

open access: yesMathematical Modelling and Analysis, 2013
We propose a new method for constructing a polyspline on annuli, i.e. a C 2 surface on ℝ2 \ {0}, which is piecewise biharmonic on annuli centered at 0 and interpolates smooth data at all interface circles.
Aurelian Bejancu
doaj   +1 more source

Three level implicit tension spline scheme for solution of Convection-Reaction-Diffusion equation

open access: yesAin Shams Engineering Journal, 2018
In this work, the numerical approximation of Convection-Reaction-Diffusion equation is investigated using the method based on tension spline function and finite difference approximation.
H.S. Shekarabi, J. Rashidinia
doaj   +1 more source

SPLINE APPROXIMATION FOR ZADEH'S EXTENSIONS

open access: yesInternational Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 2009
In this paper we show an approximation for [Formula: see text], where u is a fuzzy interval and [Formula: see text] is obtained from a continuous function f applying the Zadeh's extension principle. In this process, we used a decomposition for u and the linear spline function for the approximation of f.
Chalco-Cano, Y.   +3 more
openaire   +5 more sources

Approximate -spline surface skinning

open access: yesComputer-Aided Design, 2012
This paper considers the problem of constructing a smooth surface to fit rows of data points. A special class of T-spline surfaces is examined, which is characterized to have a global knot vector in one parameter direction and individual knot vectors from row to row in the other parameter direction.
Yang, Xunnian., Zheng, Jianmin.
openaire   +2 more sources

Two-stage spline-approximation in linear structure routing

open access: yesРоссийский технологический журнал, 2021
In the article, computer design of routes of linear structures is considered as a spline approximation problem. A fundamental feature of the corresponding design tasks is that the plan and longitudinal profile of the route consist of elements of a given ...
D. A. Karpov, V. I. Struchenkov
doaj   +1 more source

Dual Taylor Series, Spline Based Function and Integral Approximation and Applications

open access: yesMathematical and Computational Applications, 2019
In this paper, function approximation is utilized to establish functional series approximations to integrals. The starting point is the definition of a dual Taylor series, which is a natural extension of a Taylor series, and spline based series ...
Roy M. Howard
doaj   +1 more source

Differentiable Spline Approximations

open access: yes, 2021
9 pages, accepted in Neurips ...
Cho, Minsu   +8 more
openaire   +2 more sources

PENALIZED SPLINE: A GENERAL ROBUST TRAJECTORY MODEL FOR ZIYUAN-3 SATELLITE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Owing to the dynamic imaging system, the trajectory model plays a very important role in the geometric processing of high resolution satellite imagery. However, establishing a trajectory model is difficult when only discrete and noisy data are available.
H. Pan, Z. Zou
doaj   +1 more source

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