نتایج جستجو برای: medical subject heading
تعداد نتایج: 831857 فیلتر نتایج به سال:
Introduction 5 1. What is a Hopf algebra? 7 1.1. Algebras 7 1.2. Coalgebras 8 1.3. Morphisms, tensor products, and bialgebras 9 1.4. Antipodes and Hopf algebras 13 1.5. Commutativity, cocommutativity 20 1.6. Duals 22 2. Review of symmetric functions Λ as Hopf algebra 28 2.1. Definition of Λ 28 2.2. Other Bases 30 2.3. Comultiplications 34 2.4. The antipode, the involution ω, and algebra generat...
John Innes Centre, Norwich NR4 7UH, United Kingdom (E.B., L.H., C.M.); Instituto Valenciano de Investigaciones Agrarias, 46113 Moncada, Valencia, Spain (A.G.-L., L.N.); Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria, Centro di Ricerca per l’Agrumicoltura e le Colture Mediterranee, 95024 Acireale, Italy (C.L., G.R.-R.); Dipartimento di Agricoltura, Alimentazione e Ambi...
1 The lowland dipterocarp forests of Southeast Asia exhibit interspecifically synchronized general flowering (GF) and mast fruiting at irregular multi-year intervals of 1 to 11 years. The predator satiation hypothesis (PSH) posits that GF events enhance seed survival by reducing the survival, reproduction and population sizes of seed predators between GF events, and then satiating the reduced s...
The micromechanics design theory has realized random short fiber-reinforced cement composites showing pseudostrain hardening (PSH) behavior with over 5% of strain capacity under tension. Nevertheless, this existing theory currently is limited to specific constituent properties, which does not account for chemical bond and fiber rupture. This article presents a new design theory that eliminates ...
This study investigated the role of heading recency interacting with heading frequency in determining neuropsychological deficits associated with heading the ball during soccer play. Sixty-four high-ability male soccer players ages 16 to 34 completed the California Verbal Learning Test (CVLT), the Trailmaking Test, the Paced Auditory Serial Addition Test (PASAT), the Facial Recognition Test, th...
Consider a particle moving on the surface of the unit sphere in R and heading towards a specific destination with a constant average speed, but subject to random deviations. The motion is modeled as a diffusion with drift restricted to the surface of the sphere. Expressions are set down for various characteristics of the process including expected travel time to a cap, the limiting distribution...
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