Results 81 to 90 of about 54,005 (235)

A Levenberg-Marquardt algorithm for fi tting σ-w curves from three-point bend tests for plain and fi ber reinforced concretes

open access: yesRevista IBRACON de Estruturas e Materiais
This technical note describes the implementation of the Levenberg-Marquardt algorithm for the inverse analysis of three-point bend tests on notched specimens of plain and fiber reinforced concretes for determining softening parameters (σ-w curves). Tests
J.L.A.O. Sousa
doaj   +1 more source

A Hybrid Inversion Scheme Combining Markov Chain Monte Carlo and Iterative Methods for Determining Optical Properties of Random Media

open access: yesApplied Sciences, 2019
Near-infrared spectroscopy (NIRS) including diffuse optical tomography is an imaging modality which makes use of diffuse light propagation in random media.
Yu Jiang   +3 more
doaj   +1 more source

Fast and numerically stable circle fit

open access: yes, 2015
We develop a new algorithm for fitting circles that does not have drawbacks commonly found in existing circle fits. Our fit achieves ultimate accuracy (to machine precision), avoids divergence, and is numerically stable even when fitting circles get ...
Abdul-Rahman, Houssam, Chernov, Nikolai
core   +1 more source

An accelerated Levenberg-Marquardt algorithm for feedforward network

open access: yesJournal of the Korean Data and Information Science Society, 2012
Abstract This paper proposes a new Levenberg-Marquardt algorithm that is accelerated byadjusting a Jacobian matrix and a quasi-Hessian matrix. The proposed method parti-tions the Jacobian matrix into block matrices and employs the inverse of a partitionedmatrix to nd the inverse of the quasi-Hessian matrix.
openaire   +2 more sources

Optimized Dual ANN Control Technique for Efficient Energy Management System (EMS) of Microgrid

open access: yesEnergy Science &Engineering, EarlyView.
Proposed methodology. ABSTRACT The escalating global energy demand necessitates a shift towards sustainable and environmentally friendly alternatives. While renewable energy sources like solar and wind energy offer promising solutions, their intermittent nature poses significant challenges for grid integration.
Bin Li   +5 more
wiley   +1 more source

An implementation of the partitioned Levenberg-Marquardt algorithm for applications in computer vision

open access: yesSemina: Ciências Exatas e Tecnológicas, 2009
At several applications of computer vision is necessary to estimate parameters for a specific model which best fits an experimental data set. For these cases, a minimization algorithm might be used and one of the most popular is the Levenberg ...
Tiago Polizer da Silva   +3 more
doaj  

A trade‐off between efficiency and stability in a class of sky‐blue organic light‐emitting diodes

open access: yesFlexMat, EarlyView.
OLED efficiency and stability are correlated with device structure using combined experimental and simulation approach. Efficient, but less stable devices suffer mainly from exciton‐exciton annihilation, while their opposites have excitons predominantly quenched by polarons.
Eglė Tankelevičiūtė   +4 more
wiley   +1 more source

CSLM: Levenberg Marquardt based Back Propagation Algorithm Optimized with Cuckoo Search

open access: yesJournal of ICT Research and Applications, 2014
Training an artificial neural network is an optimization task, since it is desired to find optimal weight sets for a neural network during training process.
Nazri Mohd. Nawi   +2 more
doaj   +1 more source

Emotion recognition using eigenvalues and Levenberg–Marquardt algorithm-based classifier

open access: yesSādhanā, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gaidhane, Vilas H.   +2 more
openaire   +3 more sources

The Illusion of Structural Order: Evaluating the Suppression of Amorphous Carbon Black Pigment Bands in SSE‐Processed Handheld Raman Spectra

open access: yesJournal of Raman Spectroscopy, EarlyView.
The handheld Raman with SSE system efficiently mitigates fluorescence; however, it may also bias the Raman response towards graphitic domains in carbon‐based black pigments, thereby concealing amorphous carbon contributions that are critical for pigment type identification.
Zeynep Alp, Christoph Herm
wiley   +1 more source

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