Results 11 to 20 of about 658,329 (307)

Least-Squares Methods for Linear Elasticity [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2004
Summary: This paper develops least-squares methods for the solution of linear elastic problems in both two and three dimensions. Our main approach is defined by simply applying the \(L^2\) norm least-squares principle to a stress-displacement system: the constitutive and the equilibrium equations.
Zhiqiang Cai 0001, Gerhard Starke
openaire   +2 more sources

Nonlinear least squares method

open access: yesCommunications, 1999
The paper deals with a comparison of linear and nonlinear least squares approximation. Its aim is to show that the well known transformations of nonlinear dependencies on linear dependencies do not always give exact results.
Jaromír Máca, Bohus Leitner
doaj   +1 more source

Total Least Squares Method for Direction of Arrival Estimation [PDF]

open access: yesJisuanji gongcheng, 2019
In the Time Difference of Arrival(TDOA) positioning technology,when the position coordinates of the sensor have errors,the estimated value obtained by the Least Squares(LS) method no longer has the best unbiasedness,resulting in a decrease in the ...
WANG Hai, ZHANG Menghan, CUI Xunxue
doaj   +1 more source

Adaptive State Feedback Control Method Based on Recursive Least Squares

open access: yesElektronika ir Elektrotechnika, 2022
This study revealed an adaptive state feedback control method based on recursive least squares (RLS) that is introduced for a time-varying system to work with high efficiency. Firstly, a system identification block was created that gives the mathematical
Mehmet Latif Levent, Omer Aydogdu
doaj   +1 more source

A ROBUST PCT METHOD BASED ON COMPLEX LEAST SQUARES ADJUSTMENT METHOD [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Polarization Coherence Tomography (PCT) method has the good performance in deriving the vegetation vertical structure. However, Errors caused by temporal decorrelation and vegetation height and ground phase always propagate to the data analysis and ...
F. Haiqiang   +4 more
doaj   +1 more source

Solution of the Least Squares Method problem of pairwise comparison matrices [PDF]

open access: yes, 2008
The aim of the paper is to present a new global optimization method for determining all the optima of the Least Squares Method (LSM) problem of pairwise comparison matrices. Such matrices are used, e.g., in the Analytic Hierarchy Process (AHP).
Bozóki, Sándor
core   +1 more source

Research on the Improved Least Squares Reverse Time Migration Imaging Method [PDF]

open access: yesE3S Web of Conferences, 2021
An improved Least Squares Reverse Time Migration (LSRTM) method is proposed in the paper, which can effectively improve convergence speed and imaging accuracy. Firstly, the key techniques in the implementation of LSRTM are discussed.
Zhang Xiaodan   +6 more
doaj   +1 more source

Measure transparent elements using least squares iterative phase shift method

open access: yesDianzi Jishu Yingyong, 2021
In order to measure the surface phase of the front and back of the transparent plate more accurately, a phase shift algorithm based on least squares iteration is proposed.
Li Jingwei   +3 more
doaj   +1 more source

A simplified implementation of the least squares solution for pairwise comparisons matrices [PDF]

open access: yes, 2011
This is a follow up to "Solution of the least squares method problem of pairwise comparisons matrix" by Bozóki published by this journal in 2008. Familiarity with this paper is essential and assumed.
Alholcer, Marcin   +6 more
core   +1 more source

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