Results 21 to 30 of about 130,023 (314)

Semiparametric Additive Transformation Model under Current Status Data [PDF]

open access: yes, 2011
We consider the efficient estimation of the semiparametric additive transformation model with current status data. A wide range of survival models and econometric models can be incorporated into this general transformation framework.
Cheng, Guang, Wang, Xiao
core   +2 more sources

Dual generalized B-spline functions and their applications in several approximation problems

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2015
A new construction method of dual generalized B-spline functions is presented in this paper. Due to the importance of generalized B-splines, several interesting applications of these dual functions in Computer Aided Manufacturing are also given.
Li ZHANG   +3 more
doaj   +1 more source

Asymptotics for penalized additive B-spline regression [PDF]

open access: yes, 2011
This paper is concerned with asymptotic theory for penalized spline estimator in bivariate additive model. The focus of this paper is put upon the penalized spline estimator obtained by the backfitting algorithm.
Naito, K., Yoshida, T.
core   +1 more source

B-spline neural networks based PID controller for Hammerstein systems [PDF]

open access: yes, 2012
A new PID tuning and controller approach is introduced for Hammerstein systems based on input/output data. A B-spline neural network is used to model the nonlinear static function in the Hammerstein system.
K. Anbumani   +9 more
core   +4 more sources

Generating bicubic B-spline surfaces by a sixth order PDE

open access: yesAIMS Mathematics, 2021
As the solutions of partial differential equations (PDEs), PDE surfaces provide an effective way for physical-based surface design in surface modeling. The bicubic B-spline surface is a useful tool for surface modeling in computer aided geometric design (
Yan Wu, Chun-Gang Zhu
doaj   +1 more source

Optimal B-spline bases for the numerical solution of fractional differential problems [PDF]

open access: yes, 2018
Efficient numerical methods to solve fractional differential problems are particularly required in order to approximate accurately the nonlocal behavior of the fractional derivative.
Pitolli, Francesca
core   +2 more sources

Recursive B-spline approximation using the Kalman filter

open access: yesEngineering Science and Technology, an International Journal, 2017
This paper proposes a novel recursive B-spline approximation (RBA) algorithm which approximates an unbounded number of data points with a B-spline function and achieves lower computational effort compared with previous algorithms.
Jens Jauch   +3 more
doaj   +1 more source

SURFACE APPROXIMATION OF COASTAL REGIONS: LR B-SPLINE FOR DETECTION OF DEFORMATION PATTERN [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Geospatial data acquisition of terrains produces huge, noisy and scattered point clouds. An efficient use of the acquired data requires structured and compact data representations. Working directly in a point cloud is often not appealing.
G. Kermarrec, V. Skytt, T. Dokken
doaj   +1 more source

Repetitive Control Scheme of Robotic Manipulators Based on Improved B-Spline Function

open access: yesComplexity, 2021
In this paper, a repetitive control scheme of a 2-DOF robotic manipulator based on the improved cubic B-spline curve is proposed. Firstly, a repetitive controller for robotic manipulator is designed, which is composed of an iterative controller and ...
Xingyu Wang   +5 more
doaj   +1 more source

Towards B-Spline Atomic Structure Calculations

open access: yesAtoms, 2021
The paper reviews the history of B-spline methods for atomic structure calculations for bound states. It highlights various aspects of the variational method, particularly with regard to the orthogonality requirements, the iterative self-consistent ...
Charlotte Froese Fischer
doaj   +1 more source

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