Results 1 to 10 of about 24,707 (148)

Quasi-modified-Newton method-based selective harmonic elimination in cascaded H bridge inverters [PDF]

open access: yesScientific Reports
Multilevel converters have gained significant popularity in medium-voltage and high-power applications due to their numerous advantages over traditional two-level converters.
Bisma Saif   +5 more
doaj   +2 more sources

On the Modification of Newton-Secant Method in Solving Nonlinear Equations for Multiple Zeros of Trigonometric Function

open access: yesCauchy: Jurnal Matematika Murni dan Aplikasi, 2021
This study discusses the analysis of the modification of Newton-Secant method and solving nonlinear equations having a multiplicity of  by using a modified Newton-Secant method.
Juhari Juhari
doaj   +1 more source

Studies on modified limited-memory BFGS method in full waveform inversion

open access: yesFrontiers in Earth Science, 2023
Full waveform inversion (FWI) is a non-linear optimization problem based on full-wavefield modeling to obtain quantitative information of subsurface structure by minimizing the difference between the observed seismic data and the predicted wavefield. The
Meng-Xue Dai   +3 more
doaj   +1 more source

Numerical and simulation analysis comparison of hydraulic network problem base on higher-order efficiency approach

open access: yesAlexandria Engineering Journal, 2021
The hydraulic network study is a real-life engineering problem extensively base on applied and computational approaches. Several numerical schemes are tested for defining of hydraulic pipe networks solution, such as, Hardy Cross Method, Newton Method and
Waseem Asghar Khan
doaj   +1 more source

Improvement of NSL0 algorithm based on compressed sensing theory

open access: yesDianzi Jishu Yingyong, 2021
Compressed sensing theory provides a new way of signal acquisition.The signal is sparse transformed, and a few observed values are used to reconstruct the signal with high precision.Among them, the signal reconstruction method is the core of compressed ...
Tao Liang, Liu Haipeng, Wang Meng
doaj   +1 more source

Three-Dimensional Ultra-Short Base Line Based Underwater Acoustical Localization Utilizing Modified Newton Algorithm

open access: yesIEEE Access, 2021
The ultra-short base line (USBL) is a widely used technique in achieving the underwater acoustic localization (UWAL). Aimed at increasing the localization precision, we propose a three-dimensional (3-D) USBL based UWAL method utilizing the modified ...
Xiang Li   +4 more
doaj   +1 more source

Correlation and realization of quasi-Newton methods of absolute optimization [PDF]

open access: yesКомпьютерные исследования и моделирование, 2016
Newton and quasi-Newton methods of absolute optimization based on Cholesky factorization with adaptive step and finite difference approximation of the first and the second derivatives.
Anastasiya Borisovna Sviridenko   +1 more
doaj   +1 more source

Adaptation of the Newton-Raphson and Potra-Pták methods for the solution of nonlinear systems

open access: yesSemina: Ciências Exatas e Tecnológicas, 2021
In this paper we adapt the Newton-Raphson and Potra-Pták algorithms by combining them with the modified Newton-Raphson method by inserting a condition.
Luiz Antonio Farani de Souza   +2 more
doaj   +1 more source

Modified Quaternion Newton Methods [PDF]

open access: yes, 2014
We revisit the quaternion Newton method for computing roots of a class of quaternion valued functions and propose modified algorithms for finding multiple roots of simple polynomials. We illustrate the performance of these new methods by presenting several numerical experiments.
Falcão, M. I., Miranda, Fernando
openaire   +2 more sources

Newton-PGSS and Its Improvement Method for Solving Nonlinear Systems with Saddle Point Jacobian Matrices

open access: yesJournal of Mathematics, 2021
The preconditioned generalized shift-splitting (PGSS) iteration method is unconditionally convergent for solving saddle point problems with nonsymmetric coefficient matrices.
Yao Xiao, Qingbiao Wu, Yuanyuan Zhang
doaj   +1 more source

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