Results 31 to 40 of about 1,503 (160)

Fast adaptive PARAFAC decomposition algorithm with linear complexity [PDF]

2016 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, Abed-Meraim, Karim, Nguyen, Linh-Trung   +2 more
openaire   +3 more sources

From fresh to marine waters: characterization and fate of dissolved organic matter in the Lena River delta region, Siberia

Frontiers in Marine Science, 2015
Connectivity between the terrestrial and marine environment in the Artic is changing as a result of climate change, influencing both freshwater budgets and the supply of carbon to the sea.
Rafael eGonçalves-Araujo, Rafael eGonçalves-Araujo, Colin Andrew Stedmon, Birgit eHeim, Ivan eDubinenkov, Ivan eDubinenkov, Alexandra eKraberg, Denis eMoiseev, Astrid eBracher, Astrid eBracher   +9 more
doaj   +1 more source

A Constrained PARAFAC Method for Positive Manifold Data [PDF]

Applied Psychological Measurement, 1992
A set of non-negatively correlated variables, referred to as positive manifold data, display a peculiar pattern of loadings in principal compo nents analysis (PCA). If a small set of principal components is rotated to a simple structure, the variables correlate positively with all components, thus displaying positive manifold. However, this phenomenon
Krijnen, Wim P., Ten Berge, Jos M. F.
openaire   +3 more sources

Interactions Between O‐Phospho‐L‐Serine and Trivalent Metal Ions: Studies in Solution and Solid State

European Journal of Inorganic Chemistry, EarlyView.
The interaction between the phosphorylated amino acid O‐phospho‐L‐serine and trivalent ions of f‐elements such as La3+, Eu3+, and Lu3+, supplemented by Y3+, has been studied in aqueous media. Nuclear magnetic resonance (NMR) spectroscopy in solution and in the solid state examined complex formation from the ligand perspective, while time‐resolved laser‐
Jonas Kunigkeit, Björn Drobot, Dominik Goldbach, Silvia Paasch, Gudrun Scholz, Thorsten Stumpf, Eike Brunner, Jerome Kretzschmar   +7 more
wiley   +1 more source

Smooth and Probabilistic PARAFAC Model with Auxiliary Covariates

Journal of Computational and Graphical Statistics, 2023
In immunological and clinical studies, matrix-valued time-series data clustering is increasingly popular. Researchers are interested in finding low-dimensional embedding of subjects based on potentially high-dimensional longitudinal features and investigating relationships between static clinical covariates and the embedding.
openaire   +2 more sources

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

Limnology and Oceanography: Methods, EarlyView.
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, Urban Wünsch, John Paul Balmonte, Mathias Middelboe, Colin A. Stedmon, Karl M. Attard, Ronnie N. Glud   +6 more
wiley   +1 more source

Depth-dependent Photodegradation of Marine Dissolved Organic Matter

Frontiers in Marine Science, 2015
Marine dissolved organic matter (DOM) in surface and deep waters of the eastern Atlantic Ocean and Sargasso Sea was analyzed by excitation emission matrix (EEM) fluorescence spectroscopy and parallel factor analysis (PARAFAC). Photo-degradation with semi-
Stephen Andrew Timko, Anastasia eMaydanov, Sandra L Pittelli, Maureen H Conte, Maureen H Conte, William J Cooper, Boris P Koch, Boris P Koch, Philippe eSchmitt-Kopplin, Philippe eSchmitt-Kopplin, Michael eGonsior   +10 more
doaj   +1 more source

Composition characteristics and metal binding capacity of dissolved organic matter in the agriculture‐dominated Tuhai River

River, EarlyView.
Abstract An essential part of river ecosystems, dissolved organic matter (DOM) has an enormous effect on the transport and variability of heavy metals. Nonetheless, our understanding of how the DOM affects heavy metal behavior in agricultural rivers remains limited. In this research, the DOM characteristics and effects on heavy metals (Cu2+, Zn2+, and
Dongling Sang, Xin Yao, Weiwei Lü, Zhaoli Sun, Shanshan Wang, Jinye Wang, Na Jiang, YingHao Zhang, Huanguang Deng   +8 more
wiley   +1 more source

Reversing Lanmodulin's Metal‐Binding Sequence in Short Peptides Surprisingly Increases the Lanthanide Affinity

Angewandte Chemie, Volume 137, Issue 46, November 10, 2025.
Accidentally reversing the lanthanide‐binding sequences of lanmodulin‐inspired short peptides lead to the serendipitous discovery of a set of peptides with a one order of magnitude higher lanthanide‐binding affinity than the uncapped peptides synthesised in the correct direction.
Sophie M. Gutenthaler‐Tietze, Jerome Kretzschmar, Satoru Tsushima, Robin Steudtner, Björn Drobot, Lena J. Daumann   +5 more
wiley   +2 more sources

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

Sensors, 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