Results 21 to 30 of about 25,855 (295)

C1 convexity-preserving piecewise variable degree rational interpolation spline

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2020
An explicit expression of a C1 piecewise variable degree rational interpolation spline is developed, which produces a convex (concave) interpolant to given convex (concave) data directly.
Lianyun PENG, Yuanpeng ZHU
doaj   +1 more source

Rational Cubic Spline Interpolation for Monotonic Interpolating Curve with C2 Continuity

open access: yesMATEC Web of Conferences, 2017
Monotonicity preserving interpolation is very important in many sciences and engineering based problems. This paper discuss the monotonicity preserving interpolation for monotone data set by using C2 rational cubic spline interpolant (cubic/quadratic ...
Bin Abdul Karim Samsul Ariffin
doaj   +1 more source

Shape Preserving Interpolation Using C2 Rational Cubic Spline

open access: yesJournal of Applied Mathematics, 2016
This paper discusses the construction of new C2 rational cubic spline interpolant with cubic numerator and quadratic denominator. The idea has been extended to shape preserving interpolation for positive data using the constructed rational cubic spline ...
Samsul Ariffin Abdul Karim   +1 more
doaj   +1 more source

An Improvement on the Upper Bounds of the Partial Derivatives of NURBS Surfaces

open access: yesMathematics, 2020
The Non-Uniform Rational B-spline (NURBS) surface not only has the characteristics of the rational Bézier surface, but also has changeable knot vectors and weights, which can express the quadric surface accurately.
Ye Tian   +4 more
doaj   +1 more source

Construction of C1 Rational Bi-Quartic Spline With Positivity-Preserving Interpolation: Numerical Results and Analysis

open access: yesFrontiers in Physics, 2021
From the observed datasets, we should be able to produce curve surfaces that have the same characteristics as the original datasets. For instance, if the given data are positive, then the resulting curve or surface must be positive on entire given ...
Samsul Ariffin Abdul Karim   +2 more
doaj   +1 more source

Parametric Curve Comparison for Modeling Floating Offshore Wind Turbine Substructures

open access: yesEnergies, 2023
The drive for the cost reduction of floating offshore wind turbine (FOWT) systems to the levels of fixed bottom foundation turbine systems can be achieved with creative design and analysis techniques of the platform with free-form curves to save ...
Adebayo Ojo   +2 more
doaj   +1 more source

Time-domain parametric sensitivity analysis of multiconductor transmission lines [PDF]

open access: yes, 2011
We present a new parametric macromodeling technique for lossy and dispersive multiconductor transmission lines (MTLs). This technique can handle design parameters, such as substrate or geometrical layout features, and provide time-domain sensitivity ...
Antonini, G   +4 more
core   +2 more sources

Image interpolation by rational ball cubic B-spline representation and genetic algorithm

open access: yesAlexandria Engineering Journal, 2018
In this article a rational ball cubic B-spline representation based image interpolation scheme is proposed with tension parameter to interpolate two dimensional natural images.
Samreen Abbas   +2 more
doaj   +1 more source

Adaptive rational splines

open access: yesConstructive Approximation, 1990
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Towards a More General Type of Univariate Constrained Interpolation With Fractal Splines

open access: yes, 2015
Recently, in [Electronic Transaction on Numerical Analysis, 41 (2014), pp. 420-442] authors introduced a new class of rational cubic fractal interpolation functions with linear denominators via fractal perturbation of traditional nonrecursive rational ...
Chand, A. K. B.   +2 more
core   +1 more source

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