Results 91 to 100 of about 5,105 (201)

Rapid and Non-destructive Identification of Characteristic Components of Chrysanthemum by Three-Dimensional Excitation Emission Matrix Spectroscopy Coupled with Parallel Factor Analysis [PDF]

open access: yesShipin Kexue
A fast method for the identification of the characteristic components of Chrysanthemum was proposed using three-dimensional excitation emission matrix (3DEEM) spectroscopy coupled with parallel factor analysis (PARAFAC).
CHEN Siyu, PEI Ying, GU Haiyang
doaj   +1 more source

Spatio-Temporal Multiway Data Decomposition Using Principal Tensor Analysis on k-Modes: The R Package PTAk [PDF]

open access: yes
The purpose of this paper is to describe the R package {PTAk and how the spatio-temporal context can be taken into account in the analyses. Essentially PTAk() is a multiway multidimensional method to decompose a multi-entries data-array, seen ...
Didier G. Leibovici
core  

Blind multiuser equalization using a PARAFAC-subspace spproach [PDF]

open access: yes, 2005
- Dans cet article, nous utilisons la décomposition tensorielle PARAFAC (PARAllel FACtors) en vue de développer une nouvelle approche pour l'égalisation aveugle multi-utilisateur dans le cadre des systèmes de communications sans fil. Le système considéré
MOTA, Joao C. M.   +2 more
core  

A Novel PARAFAC Model for Processing the Nested Vector-Sensor Array

open access: yesSensors, 2018
In this paper, a novel parallel factor (PARAFAC) model for processing the nested vector-sensor array is proposed. It is first shown that a nested vector-sensor array can be divided into multiple nested scalar-sensor subarrays.
Wei Rao, Dan Li, Jian Qiu Zhang
doaj   +1 more source

Méthodes PARAFAC pour la séparation de signaux

open access: yes, 2006
Dans différentes applications, les signaux observés peuvent être ordonnés dans un tenseur qui se décompose en une somme de tenseurs de rang un. Une telle décomposition est appelée PARAFAC.
FIJALKOW, Inbar   +2 more
core  

Determination of Acidity Constant (pKa), Lipophilic Partition (LogP) and Distribution Coefficients (LogD) Values of Some 3-(2-Phenylethyl)-Tetrahydro-2H-1,3,5-Thiadiazine-2-Thione-5-Acetic Acid Derivatives

open access: yesCumhuriyet Science Journal
Invasive fungal infections pose a significant threat to human health, emphasizing the urgent need for new and effective antifungal agents. 3,5-Disubstituted-tetrahydro-2H-1,3,5-thiadiazine-2-thione derivatives have shown promising antifungal activity ...
Gürkan Özen   +2 more
doaj   +1 more source

Three-Mode Factor Analysis by Means of Candecomp/Parafac

open access: yesPsychometrika, 2014
A three-mode covariance matrix contains covariances of N observations (e.g., subject scores) on J variables for K different occasions or conditions. We model such an JK×JK covariance matrix as the sum of a (common) covariance matrix having Candecomp/Parafac form, and a diagonal matrix of unique variances.
Stegeman, Alwin, Lam, Tam T T
openaire   +4 more sources

Improving PARAFAC-ALS estimates with a double optimization procedure

open access: yes, 2019
An adaptation of the PARAFAC-ALS algorithm is implemented with the purpose of providing accurate and efficient estimates of CANDECOMP/PARAFAC parameters without being influenced by data characteristics and model specifications.
Simonacci, Violetta   +3 more
core   +1 more source

Insight into the dynamics of dissolved organic matter components under latitude change perturbation

open access: yesEcotoxicology and Environmental Safety
Dissolved organic matter (DOM) which can help the transportation of nutrients and pollutants plays essential role in the aquatic ecosystems. However, the dynamics of individual DOM component under the change of latitude have not been elucidated to date ...
Liming Jia, Qi Yang, Hongyang Cui
doaj   +1 more source

8D Parameters Estimation for Bistatic EMVS-MIMO Radar via the nested PARAFAC

open access: yes, 2022
In this letter, a novel nested PARAFAC algorithm was proposed to improve the 8D parameters estimation performance for the bistatic EMVS-MIMO radar. Firstly, the outer part PARAFAC algorithm was carried out to estimate the receive spatial response matrix ...
Wang, He   +4 more
core  

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