نتایج جستجو برای: cubic spline

تعداد نتایج: 46447  

In this paper fuzzy piecewise cubic interpolation is constructed for fuzzy data based on B-spline basis functions. We add two new additional conditions which guarantee uniqueness of fuzzy B-spline interpolation.Other conditions are imposed on the interpolation data to guarantee that the interpolation function to be a well-defined fuzzy function. Finally some examples are given to illustrate the...

2013
S. S. Rana Mridula Dube Preeti Tiwari

In the present paper, the existence and uniqueness of deficient discrete cubic spline interpolant by matching the given function and first order difference at the intermediate points between successive mesh points for a uniform mesh has been discussed and also a error estimate concerning this deficient discrete cubic spline interpolant is obtained

Journal: :Bulletin of the American Mathematical Society 1971

Journal: :Journal of Approximation Theory 1984

Journal: :Journal of Approximation Theory 1992

Journal: :Occupational and environmental medicine 2003
E Samoli G Touloumi A Zanobetti A Le Tertre Chr Schindler R Atkinson J Vonk G Rossi M Saez D Rabczenko J Schwartz K Katsouyanni

BACKGROUND Several recent studies have reported significant health effects of air pollution even at low levels of air pollutants, but in most of these studies linear non-threshold relations were assumed. AIMS To investigate the NO2 mortality dose-response association in nine cities participating in the APHEA-2 project using two different methods: the meta-smooth and the cubic spline method. ...

Journal: :Journal of Approximation Theory 1981

Journal: :International Journal of Mathematics and Mathematical Sciences 1992

2014
M. Dube P. S. Rana

Abstract— A smooth curve interpolation is very significant in computer graphics or in data visualization. In the present paper -piecewise rational cubic spline function with tension parameter is considered which produces a monotonic interplant to a given monotonic data set. The parameters in the description of the spline curve can be used to modify the shape of the curve, locally and globally. ...

2017
Hui WANG Chun-Gang ZHU Cai-Yun LI

Asymptote is widely used in astronomy, mechanics, architecture and relevant subjects. In this paper, by analyzing the Frenet frame and the Darboux frame of a curve on the surface, the necessary and sufficient conditions for a quadrilateral boundary being asymptotic of a surface are derived. This quadrilateral is called asymptotic quadrilateral. Given corner data including positions, tangents an...

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