A system for epileptic seizure detection in electroencephalography (EEG) is described in this paper. One of the challenges is to distinguish rhythmic discharges from nonstationary patterns occurring ...during seizures. The proposed approach is based on an adaptive and localized time-frequency representation of EEG signals by means of rational functions. The corresponding rational discrete short-time Fourier transform (DSTFT) is a novel feature extraction technique for epileptic EEG data. A multilayer perceptron classifier is fed by the coefficients of the rational DSTFT in order to separate seizure epochs from seizure-free epochs. The effectiveness of the proposed method is compared with several state-of-art feature extraction algorithms used in offline epileptic seizure detection. The results of the comparative evaluations show that the proposed method outperforms competing techniques in terms of classification accuracy. In addition, it provides a compact representation of EEG time-series.
The emerging evidence on the interconnectedness between the gut microbiome and host metabolism has led to a paradigm shift in the study of metabolic diseases such as obesity and type 2 diabetes with ...implications on both underlying pathophysiology and potential treatment. Mounting preclinical and clinical evidence of gut microbiota shifts, increased intestinal permeability in metabolic disease, and the critical positioning of the intestinal barrier at the interface between environment and internal milieu have led to the rekindling of the "leaky gut" concept. Although increased circulation of surrogate markers and directly measurable intestinal permeability have been linked to increased systemic inflammation in metabolic disease, mechanistic models behind this phenomenon are underdeveloped. Given repeated observations of microorganisms in several tissues with congruent phylogenetic findings, we review current evidence on these unanticipated niches, focusing specifically on the interaction between gut permeability and intestinal as well as extra-intestinal bacteria and their joint contributions to systemic inflammation and metabolism. We further address limitations of current studies and suggest strategies drawing on standard techniques for permeability measurement, recent advancements in microbial culture independent techniques and computational methodologies to robustly develop these concepts, which may be of considerable value for the development of prevention and treatment strategies.
Timely and quality planting of soybean is important to achieve maximum yield potential. Wet spring soil conditions and rain frequently shorten the time for farmers to plant crops within optimal soil ...conditions. New planter technology has been introduced that enables farmers to plant their fields faster and more precisely than with traditional planters. Large plot field studies were conducted in Indiana from 2015 to 2017 to evaluate a high‐speed planter at various planting speeds with multiple seeding rates on soybean. Seedling emergence, plant distribution, and final yield were evaluated. Three planting speeds 8, 12, and 16 kilometers per hour (kph) and two seeding rates (222,000 and 321,000 seeds ha−1) were included in all years, and an additional planting speed and seeding rate were included in 2016 (20 kph and 420,000 seeds ha−1, respectively). Overall, planting speed did not impact soybean seedling emergence. Uniformity of plant spacing decreased slightly as the planting speed increased from 8 to 20 kph in 2016. Cool and wet conditions immediately after planting likely led to inconsistent emergence. Final grain yield was not affected by planting speeds or seeding rate except in 2017 when 12 kph planting speed yielded 0.25 Mg ha−1 higher than the other planting speeds. Increasing planting speed can be achieved without detrimentally affecting plant population, plant spacing, and yield in soybean.
Core Ideas
Soybean planting speed can be increased without yield penalty with new planter technology.
Variation in plant spacing increased up to 6% as planting speed doubled.
Seedling emergence was not affected by planting speed.
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Popović, I., Vasić, M., Guyon, J., and Moreau, D. (Éds.) (2022). La basilique Saint-Irénée de Sirmium et sa nécropole. RomA (Rome and after in Central and Eastern Europe), 1. Brepols, Turnhout. p. ...238. 978-2-503-59550-4.
In his paper the author deals with the date of Attila's death. Several scholarly works dealt already with Attila's death and the written sources. The antique source dates his death to the year 453 ...shortly before Attila's planned campaign against Marcian. On the other hand, Leo the Great's letters has not been examined regarding this issue. In one of his letters written 11 March 451, the pope mentions the still existing dangers (flagella) where obviously refer to Attila and the Huns. This means nothing was known about Attila's death in the middle of March of 453 in Rome, so the Hun king must have died a little bit later.
We comment on the paper of S. Postnikov et al. Phys. Rev. D 82, 024016 (2010) and give a modified formula that needs to be taken into account when calculating the tidal Love number of neutron stars ...in case a first order phase-transition occurs at nonzero pressure. We show that the error made when using the original formula tends to zero as p → 0, and we estimate the maximum relative error to be ∼5% if the density discontinuity is at larger densities.
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An extensive computational analysis of several algorithms for solving the minimum-cost network flow problem is conducted. Some of the considered implementations were developed by the author and are ...available as part of an open-source C++ optimization library called LEMON (
http://lemon.cs.elte.hu/
). These codes are compared to other publicly available solvers: CS2, MCF, RelaxIV, PDNET, MCFSimplex, as well as the corresponding components of the IBM ILOG CPLEX Optimization Studio and the LEDA C++ library. This evaluation, to the author's knowledge, is more comprehensive than earlier studies in terms of the range of considered implementations as well as the diversity and size of problem instances. The presented results demonstrate that the primal network simplex and cost-scaling algorithms are the most efficient and robust in general. Other methods, however, can outperform them in particular cases. The network simplex code of the author turned out to be far superior to the other implementations of this method, and it is the most efficient solver on the majority of the considered problem instances. In contrast, the cost-scaling algorithms tend to show better asymptotic behaviour, especially on sparse graphs, and hence they are typically faster than simplex-based methods on huge networks.
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The renormalized contribution of fermions to the curvature masses of vector and axial-vector mesons is derived with two different methods at leading order in the loop expansion applied to the ( 2 + 1 ...)-flavor constituent quark-meson model. The corresponding contribution to the curvature masses of the scalar and pseudoscalar mesons, already known in the literature, is rederived in a transparent way. The temperature dependence of the curvature mass of various (axial-)vector modes obtained by decomposing the curvature mass tensor is investigated along with the (axial-)vector–(pseudo)scalar mixing. All fermionic corrections are expressed as simple integrals that involve at finite temperature only the Fermi-Dirac distribution function modified by the Polyakov-loop degrees of freedom. The renormalization of the (axial-)vector curvature mass allows us to lift a redundancy in the original Lagrangian of the globally symmetric extended linear sigma model, in which terms already generated by the covariant derivative were reincluded with different coupling constants.
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