Results 91 to 100 of about 284,723 (126)

Phương pháp Newton - Raphson và ứng dụng

, 2016
LUẬN VĂN THẠC SĨ - CHUYÊN NGÀNH: PHƯƠNG PHÁP TOÁN SƠ CẤP - MÃ SỐ: 60.46.01.13Luận văn tập trung nghiên cứu phương pháp Newton- Raphson tìm nghiệm gần đúng của phương trình f(x) = 0 với sai số cho trước.
Lê, Thị Thi
core  

Nonparametric Conditional Copula Density Estimation With Applications to the Body Mass Index

Stat, Volume 15, Issue 4, December 2026.
ABSTRACT This study develops a nonparametric conditional copula density estimator that features a parametric carrier copula refined by an exponential series adjustment. We adopt the local likelihood approach for conditional distribution estimation and incorporate the influence of covariates via kernel smoothing.
Michael Z. Wu, Lan Zhou
wiley   +1 more source

Lifetime Estimation of Blade Erosion Using Rain Erosion Test Data With Different Analysis Methods

Wind Energy, Volume 29, Issue 11, November 2026.
ABSTRACT Lifetime estimation regarding leading‐edge erosion of wind turbine blades involves a series of mathematical and statistical procedures, including regression fitting, tolerance interval formulation, and weathering modeling approaches. This work investigates the intermediate steps in the fatigue assessment process and the associated sources of ...
J. E. Simon, A. Bajpai, N. F.‐J. Johansen, Á. Hannesdóttir, C. B. Hasager   +4 more
wiley   +1 more source

Example of Newton-Raphson method (MathsCasts)

, 2016
A demonstration of how to use the Newton-Raphson method: to find the positive solution of the equation x^2 =
Vida Weiss
core   +1 more source

Surrogate Computational Homogenization Enhanced by Partition‐of‐Unity RBF Interpolation With Decision Trees

International Journal for Numerical Methods in Engineering, Volume 127, Issue 20, 30 October 2026.
ABSTRACT This study enhances a framework of surrogate computational homogenization (SCH) using decision tree‐based partition‐of‐unity radial basis function (PU‐RBF) interpolation for three‐dimensional finite‐deformation two‐scale analysis. The method addresses the scalability limitation of global RBF interpolation for large numerical material test (NMT)
Yosuke Yamanaka, Norio Hirayama, Kenjiro Terada   +2 more
wiley   +1 more source

On Representation of Macroscopic Crack in Periodic Fine‐Scale Discrete Mechanical Models

International Journal for Numerical Methods in Engineering, Volume 127, Issue 20, 30 October 2026.
ABSTRACT The evolution of strain localization and the corresponding macroscopic response obtained in multiscale modeling of softening heterogeneous materials strongly depend on the boundary conditions imposed on the fine‐scale model. For rectilinear models (e.g., squares or cubes), employing standard Periodic BCs leads to overestimation of energy ...
Jan Raisinger, Jan Eliáš
wiley   +1 more source

Application of the Newton–Raphson algorithm for enhanced harmonic reduction in seven-level packed U-cell multilevel inverters

Electrical engineering & Electromechanics
Introduction. Recently, multilevel inverters (MLIs) have been widely investigated for industrial and renewable energy systems as they are valuable in applications where they can produce clean, high-fidelity electrical signals that minimize harmonic ...
O. A. Y. Amran, N. A. Windarko, I. Syarif, T. B. J. Gemilang   +3 more
doaj   +1 more source

Fracture Modeling of Nearly Incompressible Hyperelastic Materials: A Phase‐Field Approach via Simo–Taylor–Pister Three‐Field Variation

International Journal for Numerical Methods in Engineering, Volume 127, Issue 19, 15 October 2026.
ABSTRACT Incompressibility is commonly observed in the majority of hyperelastic materials, which are fundamental to a wide range of technical applications owing to their distinctive properties, particularly their flexibility, stretchability, and resilience.
Le Zhang, Bin Li, Dong Zhao, Bo Yin, Michael Kaliske   +4 more
wiley   +1 more source

Accelerated Newton-Raphson power flow

, 2011
This paper introduces the Newton-like method of modifying the right-hand-side vector into the power flow solution. Based on this method, the accelerated Newton–Raphson (ANR) power flow algorithm is proposed. In the proposed algorithm, a constant Jacobian
Li, Gan, Zhang, Xiao-Ping; id_orcid, Xiao-Ping Zhang, Gan Li, Xi-Fan Wang, Wang, Xi-Fan   +5 more
core   +1 more source

Confidence Intervals for a Proportion Estimated From Pooled Samples Based on Firth's Corrected Score

Biometrical Journal, Volume 68, Issue 5, October 2026.
ABSTRACT Interval estimation of a proportion estimated from testing of pooled samples has been studied by a variety of researchers, who have examined both exact and asymptotic methods. Recent work in point estimation has seen the use of Firth's correction to maximum likelihood estimation to reduce bias effectively. We consider the Firth‐corrected score
Brad J. Biggerstaff, Graham Hepworth
wiley   +1 more source