Results 1 to 10 of about 9,704,991 (211)

Risk measurement of China's green financial market based on B-spline quantile regression [PDF]

open access: yesHeliyon, 2023
To accurately measure the spillover effect of China's green financial carbon emission market, a new measurement of conditional value at risk (CoVaR) based on the B-spline quantile methods is proposed.
Yuexu Zhao, Weiqi Xu
doaj   +2 more sources

A quadratic trigonometric B-Spline as an alternate to cubic B-spline

open access: yesAlexandria Engineering Journal, 2022
The idea of the quadratic trigonometric spline (QTS) for the curve modeling approach inspired this paper using a quadratic trigonometric function presented in it.
Shamaila Samreen   +2 more
doaj   +2 more sources

Uniformly convergent extended cubic B-spline collocation method for two parameters singularly perturbed time-delayed convection-diffusion problems [PDF]

open access: yesBMC Research Notes, 2023
This work proposes a uniformly convergent numerical scheme to solve singularly perturbed parabolic problems of large time delay with two small parameters.
Naol Tufa Negero
doaj   +2 more sources

A Best-Fitting B-Spline Neural Network Approach to the Prediction of Advection–Diffusion Physical Fields with Absorption and Source Terms [PDF]

open access: yesEntropy
This paper proposed a two-dimensional steady-state field prediction approach that combines B-spline functions and a fully connected neural network. In this approach, field data, which are determined by corresponding control vectors, are fitted by a ...
Xuedong Zhu   +5 more
doaj   +2 more sources

B-spline polynomials models for analyzing growth patterns of Guzerat young bulls in field performance tests [PDF]

open access: yesAnimal Bioscience
Objective The aim of this study was to identify suitable polynomial regression for modeling the average growth trajectory and to estimate the relative development of the rib eye area, scrotal circumference, and morphometric measurements of Guzerat young ...
Ricardo Costa Sousa   +5 more
doaj   +2 more sources

D-splines: Estimating rate schedules using high-dimensional splines with empirical demographic penalties

open access: yesDemographic Research, 2021
Background: High-dimensional parametric models with penalized likelihood functions strike a good balance between bias and variance for estimating continuous age schedules from large samples. The penalized spline (P-spline) approach is particularly useful
Carl Schmertmann
doaj   +1 more source

Quadratic B-Spline Surfaces with Free Parameters for the Interpolation of Curve Networks

open access: yesMathematics, 2022
In this paper, we propose a method for constructing spline surfaces interpolating a B-spline curve network, allowing the presence of free parameters, in order to model the interpolating surface.
Paola Lamberti, Sara Remogna
doaj   +1 more source

A Proposed Method for Detecting Fake Art by Using B-Spline Curves [PDF]

open access: yesEngineering and Technology Journal, 2012
This paper presents proposed method for detecting fake art by using B-Spline curves. In this paper B-Spline curve is used with special technique helps to determine the difference between the excellent copy and the real McCoy image. In the proposed method
Abdul Monem S. Rahma   +1 more
doaj   +1 more source

COMPARISON OF B-SPLINE AND TRUNCATED SPLINE REGRESSION MODELS FOR TEMPERATURE FORECAST

open access: yesBarekeng, 2023
The spline regression model is a nonparametric model and it is applied to data that do not have a certain curve shape and do not have information about it.
Sri Sulistijowati Handajani   +6 more
doaj   +1 more source

Developing an Approach to Redesign Freeform Surfaces Using B-Spline Technique [PDF]

open access: yesEngineering and Technology Journal, 2018
In product design process trends currently tend to use sculpture surface (freeform surface) that modeling by using (NURBS, B-spline, Bezier) technique to suit aesthetic, functional and manufacturability requirements.
Amjad Adulghafour, Ahmed Hassan
doaj   +1 more source

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