Results 41 to 50 of about 1,574 (174)

Angle-Polarization Estimation for Coherent Sources with Linear Tripole Sensor Arrays

open access: yesSensors, 2016
We propose a parallel factor (PARAFAC) analysis-based angle and polarization estimation algorithm for multiple coherent sources using a uniformly-spaced linear tripole sensor array.
Kun Wang, Jin He, Ting Shu, Zhong Liu
doaj   +1 more source

A New Double‐Algorithmic Architecture for Wavelet‐Domain Multiway Separation of Overlapping UV Spectra and Co‐Quantification of Analytes

open access: yesJournal of Chemometrics, Volume 40, Issue 5, May 2026.
ABSTRACT In this study, a new double‐algorithmic chemometric architecture employing continuous wavelet transform (CWT) and parallel factor analysis (PARAFAC) was developed for wavelet‐domain separation of overlapping UV spectra and co‐quantification of analytes in laboratory‐prepared binary mixtures and a commercial tablet formulation.
Erdal Dinç
wiley   +1 more source

An Algebraic Solution for the Candecomp/PARAFAC Decomposition with Circulant Factors [PDF]

open access: yesSIAM Journal on Matrix Analysis and Applications, 2014
The Candecomp/PARAFAC decomposition (CPD) is an important mathematical tool used in several fields of application. Yet, its computation is usually performed with iterative methods which are subject to reaching local minima and to exhibiting slow convergence.
de Morais Goulart, José Henrique   +1 more
openaire   +2 more sources

Ba2+‐Selective and pH‐Stable Dibenzo‐18‐Crown‐6 Equipped BODIPYs with Pronounced Fluorescence Enhancement in Aqueous Solution

open access: yesChemPhotoChem, Volume 10, Issue 5, May 2026.
Herein, we report on a Ba2+ selective, Ba2+ sensitive, and pH stable fluorescent probe with a high photostability in water (cf. TOC). This fluorescent probe is equipped with a dibenzo‐18‐crown‐6 as a highly selective Ba2+ ionophore and a tetramethylated BODIPY fluorophore.
Thomas Schwarze   +7 more
wiley   +1 more source

Cramer-Rao Bound and Fitting Algorithm for PARAFAC Decomposition Under Constant-Modulus Constraints

open access: yes工程科学与技术, 2009
:To analyze the parameter estimation performance of PARAFAC decomposition under Constant Modulus (CM) constraint, Cramer Rao Bound (CRB) expressions for PARAFAC decomposition under “First Row Known” and CM constraints were proposed.
Liu XU, XU Zong-ze
doaj  

Climate and Landscape Controls on Dissolved Organic Matter in Wetland‐Dominated Catchments of the Boreal Plains, Canada

open access: yesHydrological Processes, Volume 40, Issue 5, May 2026.
In the subhumid, wetland‐rich, geologically heterogeneous Boreal Plains region of Canada, we found several controls on stream DOC concentration ([DOC]) and DOM composition: An increase in [DOC] and aromaticity as temperature increases throughout the summer, with temperature trend prevailing over the influence of discharge.
Julia Orlova   +3 more
wiley   +1 more source

A New Approach of Oil Spill Detection Using Time-Resolved LIF Combined with Parallel Factors Analysis for Laser Remote Sensing

open access: yesSensors, 2016
In hope of developing a method for oil spill detection in laser remote sensing, a series of refined and crude oil samples were investigated using time-resolved fluorescence in conjunction with parallel factors analysis (PARAFAC).
Deqing Liu   +5 more
doaj   +1 more source

An ultraviolet–visible spectroscopy system for studying real‐time pressure effects on enzyme activity

open access: yesLimnology and Oceanography: Methods, Volume 24, Issue 5, May 2026.
Abstract Investigations of hydrostatic pressure effects on microbial enzymatic processing are challenging but critical for understanding element cycling in the world's oceans. In this study, we developed and tested a stainless‐steel pressure cell capable of withstanding up to 110 MPa of hydrostatic pressure (equivalent to ~ 11,000 m depth), featuring ...
Maria Papadimitraki   +6 more
wiley   +1 more source

Emerging applications of EEM-PARAFAC for water treatment: a concise review

open access: yesChemical Engineering Journal Advances, 2022
In this work, the application of EEM-PARAFAC (fluorescence excitation-emission matrix-parallel factor analysis) in water treatment processes, has been summarized. First, its most common use, the characterization and monitoring of dissolved organic matter
Iván Sciscenko   +4 more
doaj   +1 more source

Regularized Tensor Quantile Regression With Applications to Neuroimaging Data Analysis

open access: yesStatistics in Medicine, Volume 45, Issue 10-12, May 2026.
ABSTRACT This article proposes a regularized linear quantile regression model with a scalar response and tensor‐valued covariates. Our model uniquely regularizes the parameters of a low‐dimensional tensor effect decomposition through the tensor estimate rather than directly through the decomposition's parameters.
Matthew Pietrosanu   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy