Results 31 to 40 of about 1,574 (174)

Evaluating the potential of Volterra-PARAFAC IIR models [PDF]

2013 IEEE International Conference on Acoustics, Speech and Signal Processing, 2013
The Volterra-PARAFAC (VP) nonlinear system model, which consists of a FIR filterbank followed by a memoryless nonlin-earity, aims at offering a good compromise between accuracy and parametric complexity. Here, for an even better compromise , we propose a generalization with IIR filters (VPI model) and evaluate both models.
Phillip Mark Seymour Burt, José Henrique de Morais Goulart   +1 more
openaire   +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.
Krijnen, Wim P., Ten Berge, Jos M. F.
openaire   +3 more sources

Multidimensional Insights Into the Drivers of Aquatic CO2 Dynamics: A River–Reservoir–Wetland Aquatic Continuum Study Within a Semi‐Arid Region

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Evaluating multiple competing biotic and abiotic processes and how they interact with carbon dioxide (CO2) in aquatic systems, is critical to understanding regional and global carbon cycles. Here, we used an aquatic continuum of the Bahe watershed, within a semi‐arid region, to establish a comprehensive conceptual framework for identifying CO2
Mingyu Shao, Zaihua Liu, Sibo Zeng, Hailong Sun, Haibo He, Qiang Li, Qian Bao, Liangxing Shi, Junyao Yan, Qiufang He, Yan Fang, Min Zhao   +11 more
wiley   +1 more source

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

Landscape Influence on the Browning of a Lake Watershed in the Adirondack Region of New York, USA

Soil Systems, 2020
Watershed recovery from long-term acidification in the northeastern U.S. has been characterized by an increase in the influx of dissolved organic matter (DOM) into surface waters.
Nicholas A. LoRusso, Marykate McHale, Patrick McHale, Mario Montesdeoca, Teng Zeng, Charles T. Driscoll   +5 more
doaj   +1 more source

From Design of Experiments to Analysis of Variance of Multivariate Data: A Tutorial Review on ANOVA Simultaneous Component Analysis

Journal of Chemometrics, Volume 40, Issue 6, June 2026.
ABSTRACT ANOVA simultaneous component analysis (ASCA) is the current state‐of‐the‐art chemometric tool for analyzing and interpreting high‐dimensional experimental data from a design of experiments (DoE). Being a multivariate extension of the ANOVA, ASCA makes a perfect tandem with DoE.
José Camacho, Jokin Ezenarro, Daniel Schorn‐García, Johan A. Westerhuis   +3 more
wiley   +1 more source

Species‐specific processing of fluorescent dissolved organic matter by Caribbean sponges

Limnology and Oceanography, Volume 71, Issue 6, June 2026.
Coral reefs are biodiverse and productive ecosystems that are found in typically oligotrophic environments. Many studies have attempted to explain this paradox by demonstrating that microbial symbionts expand metabolic capabilities of host animals.
Jacqueline G. Keleher, Cole G. Easson, Christopher J. Freeman, Robert W. Thacker, Craig E. Nelson, Alicia M. Reigel, Cara L. Fiore   +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

Carbon source and weather in coastal North Carolina

Limnology and Oceanography, Volume 71, Issue 6, June 2026.
Abstract The increasing frequency of extreme weather events, including tropical cyclones, is altering the delivery and quality of organic matter (OM) exported from landscapes to estuaries. However, the mechanisms regulating these shifts, especially during multi‐year climatic oscillations, remain poorly understood.
Christopher L. Osburn, Thomas S. Bianchi, Hans W. Paerl, Nathan S. Hall, Alexandria G. Hounshell, Jacob C. Rudolph, Ruchi Bhattacharya, Ryan W. Paerl   +7 more
wiley   +1 more source

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

Geophysical 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, Roxane Maranger, Luc Tremblay, Jennifer Cherrier, Jean‐Eric Tremblay, Nagissa Mahmoudi   +5 more
wiley   +1 more source