3,837 research outputs found
Safety Net hospital Emergency Departments: Creating Safety Valves for Non-urgent Care
Outlines how safety-net hospitals are addressing the rise in emergency department visits for non-urgent care, such as re-directing patients to outpatient clinics or community health centers and adding primary care capacity. Discusses policy implications
All-optical nonequilibrium pathway to stabilizing magnetic Weyl semimetals in pyrochlore iridates
Nonequilibrium many-body dynamics is becoming one of the central topics of
modern condensed matter physics. Floquet topological states were suggested to
emerge in photodressed band structures in the presence of periodic laser
driving. Here we propose a viable nonequilibrium route without requiring
coherent Floquet states to reach the elusive magnetic Weyl semimetallic phase
in pyrochlore iridates by ultrafast modification of the effective
electron-electron interaction with short laser pulses. Combining \textit{ab
initio} calculations for a time-dependent self-consistent reduced Hubbard
controlled by laser intensity and nonequilibrium magnetism simulations for
quantum quenches, we find dynamically modified magnetic order giving rise to
transiently emerging Weyl cones that are probed by time- and angle-resolved
photoemission spectroscopy. Our work offers a unique and realistic pathway for
nonequilibrium materials engineering beyond Floquet physics to create and
sustain Weyl semimetals. This may lead to ultrafast, tens-of-femtoseconds
switching protocols for light-engineered Berry curvature in combination with
ultrafast magnetism.Comment: 27 pages including methods and supplementary information, 4 figures,
4 supplementary figure
Genetic architecture of body size in mammals
Much of the heritability for human stature is caused by mutations of small-to-medium effect. This is because detrimental pleiotropy restricts large-effect mutations to very low frequencies
Age differences in sentence production
This is an electronic version of an article published in J Gerontol B Psychol Sci Soc Sci (2003) 58 (5): P260-P268. doi: 10.1093/geronb/58.5.P260Two experiments have been completed using experimental techniques to study language production under controlled conditions. In Experiment 1, young and older adults were given two, three, or four words and asked to compose a sentence. Older adults' responses were similar to those of young adults when given two or three words. When given four words, the older adults made more errors and their responses were shorter and less elaborate than those of the young adults. In Experiment 2, simple intransitive verbs (smiled), transitive verbs (replaced), and complement-taking verbs (expected) were contrasted. The responses of older adults were similar to those of young adults given intransitive and transitive verbs. Given complement-taking verbs, young adults produced complex sentences, whereas the older adults produced simpler, less complex sentences; the older adults also made many errors. Both experiments found that older adults respond more slowly than young adults
The Costs of Doing Two Things at Once for Young and Older Adults: Talking while Walking, Finger Tapping, and Ignoring Speech or Noise
This article may not exactly replicate the final version published in the APA journal. It is not the copy of recordYoung and older adults provided language samples in response to questions while walking, finger tapping, and ignoring speech or noise. The language samples were scored on 3 dimensions: fluency, complexity, and content. The hypothesis that working memory limitations affect speech production by older adults was tested by comparing baseline samples with those produced while the participants were performing the concurrent tasks. There were baseline differences: Older adults' speech was less fluent and less complex than young adults' speech. Young adults adopted a different strategy in response to the dual-task demands than older adults: They reduced sentence length and grammatical complexity. In contrast, older adults shifted to a reduced speech rate in the dual-task conditions. (PsycINFO Database Record (c) 2010 APA, all rights reserved
Improving efficiency in agricultural water use
June 30, 1969.Submitted to Office of Water Resources Research, U.S. Department of Interior.Bibliography: page 5.OWRR Project A-002-COLO; grant nos. 14-01-0001-553, 726, 900, 1074, 1625
CV-7A Transport Aircraft Modification to Provide an Augmentor-Wing Jet STOL Research Aircraft. Volume 1 - Design Study
Design study data for CV-7A transport aircraft modification to provide augmentor wing jet STOL research aircraf
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