Results 51 to 60 of about 1,590 (175)

Multi-Aspect Incremental Tensor Decomposition Based on Distributed In-Memory Big Data Systems

open access: yesJournal of Data and Information Science, 2020
We propose InParTen2, a multi-aspect parallel factor analysis three-dimensional tensor decomposition algorithm based on the Apache Spark framework. The proposed method reduces re-decomposition cost and can handle large tensors.
Yang Hye-Kyung, Yong Hwan-Seung
doaj   +1 more source

Microbial Controls on Dissolved Organic Nitrogen Cycling During Long‐Term Degradation Experiments

open access: yesGeophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Dissolved organic nitrogen (DON) is critical for marine microbial growth by providing carbon and nitrogen. Although DON is rapidly cycled, some compounds within this pool can persist for long‐periods of time. To better understand how DON is cycled by marine microorganisms, we conducted 548‐day incubations using surface‐derived dissolved ...
Richard LaBrie   +5 more
wiley   +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

Maximum Likelihood Solution to the Parafac Model

open access: yesBehaviormetrika, 1987
The traditional factor analytic view of the PARAFAC model and its extension to a four mode situation with the derivation of the maximum likelihood estimation procedure by the generalized EM algorithm was presented. The four mode model was applied to six ASVAB data matrices defined by three specialty (clerical, mechanical, and electrical), times two ...
openaire   +1 more source

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

On Kruskal’s uniqueness condition for the Candecomp/Parafac decomposition

open access: yesLinear Algebra and its Applications, 2007
The Candecomp/Parafac-decomposition of the real valued three-way array \(X\) is written as \(X=\underline{Y}^{(1)} + \ldots + \underline{Y}^{(R)} +\underline{E}\), where \(\underline{Y}^{(r)}\) are rank one arrays defined as outer products of three specified vectors and \(\underline E\) is a rest term.
Stegeman, A., Sidiropoulos, N. D.
openaire   +3 more sources

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

Influence of soil moisture availability on dissolved organic matter properties and microbial carbon content in Poa pratensis L. rhizosphere

open access: yesБюллетень Почвенного института им. В.В. Докучаева
The goal of the work was to assess changes in microbial carbon content and the properties of dissolved organic matter (DOM) of the Poa pratensis L. rhizopshere in response to the effects of soil drying and waterlogging.
I. V. Danilin   +6 more
doaj   +1 more source

Fast adaptive PARAFAC decomposition algorithm with linear complexity [PDF]

open access: yes2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2016
We present a fast adaptive PARAFAC decomposition algorithm with low computational complexity. The proposed algorithm generalizes the Orthonormal Projection Approximation Subspace Tracking (OPAST) approach for tracking a class of third-order tensors which have one dimension grow- ing with time.
Nguyen, Viet-Dung   +2 more
openaire   +3 more sources

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

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