Results 51 to 60 of about 4,036,712 (128)
Emerging Microbes and Infections, 2022 Mallards (Anas platyrhynchos) are an abundant anseriform migratory wild bird species worldwide and an important reservoir for the maintenance of low pathogenicity (LP) avian influenza viruses (AIV).
Ann Kathrin Ahrens +4 more
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AxiomsThis study introduces a novel generalization: the generalized geometric Frank matrix, which extends the classical Frank matrix and its known variants. We systematically examine its algebraic structure, providing detailed analyses of its factorizations ...
Bahar Kuloğlu
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The Photometry of Undersampled Point Spread Functions [PDF]
, 1999 An undersampled point spread function may interact with the microstructure of a solid-state detector such that the total flux detected can depend sensitively on where the PSF center falls within a pixel.
Richardson W. H., Tod R. Lauer
core +2 more sources
Bounds on the extent of a topological space
Математичні Студії, 2022 The extent $e(X)$ of a topological space $X$ is the supremum of sizes of closed discrete subspaces of $X$. Assuming that $X$ belongs to some class of topological spaces, we bound $e(X)$ by other cardinal characteristics of $X$, for instance Lindel\"of ...
A. Ravsky, T. Banakh
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Elementary GLOBE: To Spread or Not To Spread [PDF]
, 2008 A learning activity for the "Do You Know That Clouds Have Names?" book in the Elementary GLOBE series. Students will explore the difference between the three types of contrails, make observations of contrails outside, and record their observations ...
core
Temps d'Educació, 2011 Aquest text té per objectiu analitzar la difusió de l’aprenentatge servei (APS), una pràctica educativa innovadora que s’ha estès al llarg dels darrers anys a Catalunya.
Josep M. Puig Rovira
doaj
Microorganisms, 2015 High-throughput molecular screening is required to investigate the origin and diffusion of antimicrobial resistance in pathogen outbreaks. The most frequent cause of human infection is Escherichia coli, which is dominated by sequence type 131 (ST131)—a ...
Tim Downing
doaj +1 more source
Brain and Behavior, 2021 Background Anxiety and stress like mental illnesses are the common outcomes of viral epidemics and pandemics. Novel coronavirus disease 2019 (COVID‐19) outbreak caused by the severe acute respiratory syndrome coronavirus virus 2 (SARS‐CoV‐2) was first ...
Suliman Khan +7 more
doaj +1 more source
Random Information Spread in Networks [PDF]
, 2010 Let G=(V,E) be an undirected loopless graph with possible parallel edges and s and t be two vertices of G. Assume that vertex s is labelled at the initial time step and that every labelled vertex copies its labelling to neighbouring vertices along edges ...
Lapus, Raymond +2 more
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Dynamics of Bid-ask Spread Return and Volatility of the Chinese Stock Market
, 2011 Bid-ask spread is taken as an important measure of the financial market liquidity. In this article, we study the dynamics of the spread return and the spread volatility of four liquid stocks in the Chinese stock market, including the memory effect and ...
Admati +60 more
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