نتایج جستجو برای: remotal centers
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In 1984, Congress directed NIH to foster further research related to Alzheimer's disease (AD). The Public Health Service Act authorizes the NIH Alzheimer’s Disease Centers (ADCs) program under section 445 (42 U.S.C. 285e-2). NIH funded the first ADCs in the mid-1980s in response to the congressional directive, information on AD emerging from the work of NIH grantees and other researchers, and t...
The widely adoption of the novel Internet services of the last decade, e.g., web 2.0 services, cloud services, and cloud computing, modified the structure of the whole Internet ecosystem. Contrary to the earlier disperse structure, where each service had its own server to be operated on, the infrastructures of the current cloud services are highly centralized; numerous services are run by a sin...
The central vertices in complex networks are of particular interest because they might play the role of organizational hubs. Here, we consider three different geometric centrality measures, excentricity, status, and centroid value, that were originally used in the context of resource placement problems. We show that these quantities lead to useful descriptions of the centers of biological netwo...
The capture of solar radiation and the conversion of its free energy into chemical energy involves a sequence of reactions that occur within a physical structure called the photosynthetic RC. Following the initial capture of a photon by antenna pigments, the photon is transferred to the RC pigments, where it gives rise to a separation and stabilization of charge across the photosynthetic membra...
Suppose that G is a connected compact Lie group. We show that simple numerical information about the Weyl group of G can be used to obtain bounds, often sharp, on the size of the center of G. These bounds are obtained with the help of certain Coxeter elements in the Weyl group. Variants of the method use generalized Coxeter elements and apply to p-compact groups; in this case a splitting theore...
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