Results 101 to 110 of about 5,678 (257)

Lagrange Interpolation and Boundary-Value Problems

open access: yesJournal of Integral Equations and Applications, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zayed, Ahmed I., Shin, Chang Eon
openaire   +3 more sources

Pension Systems (Un)sustainability and Fiscal Constraints: A Comparative Analysis

open access: yesOxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT Using an overlapping generations model, two new indicators of public pension system sustainability are proposed: the pension space, which measures the capacity to pay for pension expenditures out of labour taxation, and the pension space exhaustion probability reflecting demographic uncertainties.
Burkhard Heer   +2 more
wiley   +1 more source

On Lagrange-type interpolation series and analytic Kramer kernels

open access: yes, 2008
The classical Kramer sampling theorem provides a method for obtaining orthogonal sampling formulas. A challenging problem is to characterize the situations when these sampling formulas can be written as Lagrange-type interpolation series.
Everitt, W   +2 more
core   +1 more source

Comparative Analysis of Three Vertebral Screw Placement Directions in Anterior Thoracolumbar Fracture Surgery: A Finite Element Study

open access: yesOrthopaedic Surgery, Volume 17, Issue 5, Page 1464-1477, May 2025.
This study compares the biomechanical effects of three anterior fixation systems in thoracolumbar surgery—HXTL, NHXTL, and Medtronic's CD Horizon ANTERIOR. Finite element analysis evaluates stress and displacement across vertebral bodies and support structures under varying load conditions. Results indicate the HXTL system minimizes nail–rod stress yet
Xuehai Jia   +7 more
wiley   +1 more source

Numerical solution of potential problems using radial basis reproducing kernel particle method

open access: yesResults in Physics, 2019
The paper presents the radial basis reproducing kernel particle method (RRKPM) for potential problems. The proposed RRKPM can eliminate the negative effect of different reproducing kernel functions (RKF) on computational stability and accuracy.
Hongfen Gao, Gaofeng Wei
doaj   +1 more source

4D ultrasound reveals regional left atrial strain remodelling in a murine model of reversible pressure overload

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Traditional planar imaging approaches of the left atrium do not capture complex geometry. Four‐dimensional imaging allows the acquisition of 3D data + time to visualize left atrial geometry and kinematics. We designed an advanced analysis technique to investigate left atrial biomechanics in a model of pressure overload and ...
John P. Salvas   +3 more
wiley   +1 more source

Self‐Similar Blowup for the Cubic Schrödinger Equation

open access: yesCommunications on Pure and Applied Mathematics, Volume 79, Issue 8, Page 1831-1918, August 2026.
ABSTRACT We give a rigorous proof for the existence of a finite‐energy, self‐similar solution to the focusing cubic Schrödinger equation in three spatial dimensions. The proof is computer‐assisted and relies on a fixed point argument that shows the existence of a solution in the vicinity of a numerically constructed approximation.
Roland Donninger, Birgit Schörkhuber
wiley   +1 more source

Kalman filter for 3D motion estimation via Lagrange interpolation and numerical integration

open access: yes, 2004
This paper presents a Kalman filter approach for 3D motion estimation of an object that undergoes arbitrary rotational and translational motion. Problem considered here is error propagation from image features to 3D motion estimation.
Hou FL(侯菲莉), Zhu F(朱枫)
core  

General Framework for Multi‐Degree‐of‐Freedom Stiffness Matrix Updating for Iterative Solution Algorithms in Hybrid Simulation

open access: yesEarthquake Engineering &Structural Dynamics, Volume 55, Issue 9, Page 1947-1967, 25 July 2026.
ABSTRACT Iterative solvers are advantageous for handling nonlinear structural analysis problems. The iterative solvers often require updating the stiffness matrix, which limits their application in static and pseudo‐dynamic hybrid simulations because: (1) updating the stiffness matrix of a system involving a physical specimen is challenging; (2 ...
Junyan Xiao, Oh‐Sung Kwon, Evan Bentz
wiley   +1 more source

Prediction of Life Expectancy in Indonesia by Implementing Website-Based Lagrange Polynomial Interpolation

open access: yesInternational Journal of Applied Sciences and Smart Technologies
Life Expectancy (AHH) is a measurement of the average human lifespan accepted and used to assess the quality of health and welfare of a country's population.
Syamsul Maarip   +5 more
doaj   +1 more source

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