نتایج جستجو برای: closures
تعداد نتایج: 4617 فیلتر نتایج به سال:
This paper establishes the fundamental properties of s-closures, a recently introduced family closure operations on ideals rings positive characteristic. The behavior s-closure homogeneous in graded is studied, and criteria are given for when an ideal can be described exactly terms its tight rational powers. Sufficient conditions established weak to equal s-closure. A generalization Briançon-Sk...
BACKGROUND The Queensland East Coast Otter Trawl Fishery (ECOTF) for penaeid shrimp fishes within Australia's Great Barrier Reef World Heritage Area (GBRWHA). The past decade has seen the implementation of conservation and fisheries management strategies to reduce the impact of the ECOTF on the seabed and improve biodiversity conservation. New information from electronic vessel location monitor...
In mainland China, most avian influenza A(H7N9) cases in the spring of 2013 were reported through the pneumonia of unknown etiology (PUE) surveillance system. To understand the role of possible underreporting and surveillance bias in assessing the epidemiology of subtype H7N9 cases and the effect of live-poultry market closures, we examined all PUE cases reported from 2004 through May 3, 2013. ...
Two-dimensional maximum entropy closure and various standard one-dimensional closures in flux-limited neutrino diffusion and two-moment transport are compared against direct numerical solutions of the neutrino Boltzmann equation. The approximate transport based on particular closures of the moment equations is rated by testing so-called weak equivalence of the first three moments of the neutrin...
School closure is often purported to reduce influenza transmission, but little is known about its effect on families. We surveyed families affected by pandemic (H1N1) 2009-related school closures in Perth, Western Australia, Australia. Surveys were returned for 233 (58%) of 402 students. School closure was deemed appropriate by 110 parents (47%); however, 91 (45%) parents of 202 asymptomatic st...
One should expect any loci cut out by such algebro-geometric conditions to be a variety by basic reasons, and indeed to prove orbit closures are varieties Filip explains that it suffices to show that they are cut out by such conditions. (Filip expands the list slightly.) By two deep theorems of Möller, every closed orbit is known to be described by such conditions, which you might think would g...
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