This paper presents a new method for the determination of imidacloprid in water samples; one of the most widely used neonicotinoid pesticides in the farming industry. The method is based on the measurement of excitation-emission spectra of photo-induced fluorescence (PIF-EEMs) associated with second-order multivariate calibration with a parallel factor analysis (PARAFAC) and unfolded partial le...

The origin of dissolved organic matter (DOM) within sea ice in coastal waters of the Baltic Sea was investigated using parallel factor (PARAFAC) analysis of DOM fluorescence. Sea ice DOM had distinctly different fluorescence characteristics than that of the underlying humic-rich waters and was dominated by protein-like fluorescence signals. PARAFAC analysis identified five fluorescent component...

Long-term changes in dissolved organic matter (DOM) quality, especially humic-rich raw waters, may lead to intensive adaptions drinking-water processing. However, seasonal DOM quality standing waters are poorly understood. To fill this gap, the of a German drinking water reservoir was investigated on monthly basis by Fourier-transform ion cyclotron resonance mass spectrometry (FTICR MS) measure...

Three common food colorants (tartrazine TT, allura red AR, and sunset yellow SY) were simultaneously quantified in powdered soft drinks by employing a combination of absorbance spectra-pH data matrices and multivariate processing of the generated second-order data. Parallel factor analysis PARAFAC and bilinear least squares/residual bilinearization BLLS/RBL were applied for deconvolution of tri...

Link analysis typically focuses on a single type of connection, e.g., two journal papers are linked because they are written by the same author. However, often we want to analyze data that has multiple linkages between objects, e.g., two papers may have the same keywords and one may cite the other. The goal of this paper is to show that multilinear algebra provides a tool for multilink analysis...

In this study, a fluorescence approach was used to evaluate the production of soluble microbial products (SMP) in aerobic granular sludge system under the stress of 2,4-dichlorophenol (2,4-DCP). A combined use of three-dimension excitation emission matrix fluorescence spectroscopy (3D-EEM), Parallel factor analysis (PARAFAC), synchronous fluorescence and two-dimensional correlation spectroscopy...

Optical properties are easy-to-measure proxies for dissolved organic matter (DOM) composition, source, and reactivity. However, the molecular signature of DOM associated with such optical parameters remains poorly defined. The Florida coastal Everglades is a subtropical wetland with diverse vegetation (e.g., sawgrass prairies, mangrove forests, seagrass meadows) and DOM sources (e.g., terrestri...

Dissolved organic matter (DOM) is a complex pool of compounds with key role in the global carbon cycle. To understand its natural and engineered systems, efficient approaches are necessary for tracking DOM quality quantity. Fluorescence spectroscopy combined parallel factor analysis (PARAFAC) very widely used to identify quantify different fractions as proxies source, concentration biogeochemic...

Frequency synchronization is a critical requirement for single-carrier frequency division multiple-access (SC-FDMA) uplink transmissions. Based on the key observation that the received signal at the base station can be formulated as the parallel factor analysis model, we present a joint carrier frequency offset (CFO) estimation and compensation scheme for SC-FDMA uplink transmissions with inter...