We examine color constancy algorithms based on finite-dimensional linear models of surface reflectance and illumination from a computational point of view. It is shown that, within finite dimensional models, formulation and solution of color constancy are determined by the choice of basis functions, the number of spectral receptors and the spatial constraints. We analyze some algorithms with ex...

A pharmacokinetic study of intravenously and orally administered memantine was run on 12 pigs. The blood samples were collected up to 12 hours after drug administration. The memantine plasma levels were determined using a validated method of liquid chromatography coupled with mass spectrometry detection. Six pharmacokinetic models were screened and the best one describing the absorption and dis...

Distance, e-education supported by technological development have enhanced educational processes by combining achievements from various scientific fields. This techno-educational enhancement has happened within the last decade. Virtual learning has grown in popularity as a new way of learning that gives preference to learn in convenient time and places, using specially prepared learning materia...

The properties of biofilm EPS are determined by the multiple interactions between its constituents and surrounding environment. Because high complexity EPS, constituents' characterisation is still far from thorough, identification these cannot be done yet. Therefore, we use gels bacterial alginate-like exopolysaccharides (ALEs) as a model component for in this work. These have been examined the...

The radiations from 60-day Sb lN have been studied by several investigators. H ales and Jordan [2] used a 1800 spectrometer to study the beta spectrum of Sb124. Tbey report the presence of two components with maximum cnergies at 0.74 ± O.03 and 2.45 ± 0.07 million electron volts (NIev) . ~1iller and Omtiss [3], u ing a thin magnetic len spectrometer , also ob erved a complex beta specLrum, but ...

The results of particle-in-cell simulations of a negative neutral beam heated Alfvén-mode experiment in the Japan Atomic Energy Research Institute Tokamak-60 Upgrade JT-60U H. Ninomiya et al., Fusion Sci. Technol. 42, 7 2002 ; A. Kitsunezaki et al., ibid. 42, 179 2002 are presented. They seem to match quite well the dynamics of the abrupt large-amplitude event ALE experimentally observed in the...

Penicillin G acylase (PGA; EC 3.5.1.11) is a hydrolytic enzyme that acts on the side chains of penicillin G, cephalosporin G and related ntibiotics to produce the -lactam antibiotic intermediates 6-amino penicillanic acid (6-APA) and 7-amino des-acetoxy cephalosporanic acid 7-ADCA), with phenyl acetic acid (PAA) as a common by-product. These antibiotic intermediates are among the potential buil...

The human brain rapidly detects faces in the visual environment. We recently presented a sweep visual evoked potential approach to objectively define face detection thresholds as well as suprathreshold response functions (Ales, Farzin, Rossion, & Norcia, 2012). Here we determined these parameters are affected by orientation (upright vs. inverted) and contrast polarity (positive vs. negative), t...

This paper develops a new approach to the detection of the emergency locator transmitter (ELT) signal using an adaptive line enhancer (ALE). The input signal to the ALE is replaced by its autocorrelation function (ACF) because noise affects the central samples of the autocorrelation function only while it affects all samples of the noisy signal. This gives the ALE the ability to get rid of nois...