Results 251 to 260 of about 1,057,712 (313)
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Suicide Mortality and Coronavirus Disease 2019-A Perfect Storm?
JAMA psychiatry, 2020Suicide rates have been rising in the US over the last 2 decades. The latest data available (2018) show the highest age-adjusted suicide rate in the US since 1941.1 It is within this context that coronavirus disease 2019 (COVID-19) struck the US ...
M. Reger, Ian H. Stanley, T. Joiner
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Novum Testamentum, 2015
Hebrews evinces the linked exegetical aporiae of, on the one hand, tension between the asserted perfection of the believer and exhortations to further perfection and, on the other, a similar tension between Christ’s exalted, preexistent nature and claims about his need for further perfection during his earthly life.
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Hebrews evinces the linked exegetical aporiae of, on the one hand, tension between the asserted perfection of the believer and exhortations to further perfection and, on the other, a similar tension between Christ’s exalted, preexistent nature and claims about his need for further perfection during his earthly life.
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Full-Stokes Polarization Perfect Absorption with Diatomic Metasurfaces.
Nano letters (Print), 2021Metamaterial-based perfect absorbers provide efficient ways for selective absorption of light with both linear or circular polarizations. Perfect absorption for an arbitrary polarization requires the development of subwavelength structures absorbing ...
Yao Liang +7 more
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American Journal of Medical Genetics, 1988
AbstractThirty‐five subjects with perfect pitch, representing 19 families, were studied with a Perfect Pitch Questionnaire, which provided information on note‐recognition capacity and musical exposure and training, as well as demographic characteristics. Perfect pitch was found to predominate in females and was detected at a very early age.
Joseph Profita +3 more
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AbstractThirty‐five subjects with perfect pitch, representing 19 families, were studied with a Perfect Pitch Questionnaire, which provided information on note‐recognition capacity and musical exposure and training, as well as demographic characteristics. Perfect pitch was found to predominate in females and was detected at a very early age.
Joseph Profita +3 more
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The strong perfect graph theorem
100 Years of Math Milestones, 2019In 1960 Berge came up with the concept of perfect graphs, and in doing so, conjectured some characteristics about them. A perfect graph is a graph in which the chromatic number of every induced subgraph equals the size of the largest clique of that ...
A. M. Murray
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Journal of Graph Theory, 2014
AbstractThe clique number of a digraph D is the size of the largest bidirectionally complete subdigraph of D. D is perfect if, for any induced subdigraph H of D, the dichromatic number defined by Neumann‐Lara (The dichromatic number of a digraph, J. Combin. Theory Ser. B 33 (1982), 265–270) equals the clique number .
Andres, Stephan Dominique +1 more
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AbstractThe clique number of a digraph D is the size of the largest bidirectionally complete subdigraph of D. D is perfect if, for any induced subdigraph H of D, the dichromatic number defined by Neumann‐Lara (The dichromatic number of a digraph, J. Combin. Theory Ser. B 33 (1982), 265–270) equals the clique number .
Andres, Stephan Dominique +1 more
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Acoustic perfect absorbers via Helmholtz resonators with embedded apertures.
Journal of the Acoustical Society of America, 2019Acoustic perfect absorption via a structure with deep subwavelength thickness is of great and continuing interest in research and engineering. This study analytically and experimentally investigates acoustic systems based on Helmholtz resonators which ...
Sibo Huang +5 more
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Acta Mathematica Hungarica, 1998
The author generalizes results of \textit{E. A. Mares} [Math. Z. 82, 347-360 (1963; Zbl 0131.27401)] and \textit{R. Ware} [Trans. Am. Math. Soc. 155, 233-256 (1971; Zbl 0215.09101)], namely he extends the concept of perfectness to modules which are not necessarily projective. Let \(M\in\text{mod-}R\), where \(R\) is an associative ring with \(1\neq 0\)
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The author generalizes results of \textit{E. A. Mares} [Math. Z. 82, 347-360 (1963; Zbl 0131.27401)] and \textit{R. Ware} [Trans. Am. Math. Soc. 155, 233-256 (1971; Zbl 0215.09101)], namely he extends the concept of perfectness to modules which are not necessarily projective. Let \(M\in\text{mod-}R\), where \(R\) is an associative ring with \(1\neq 0\)
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Nursing Standard, 2016
This app helps nurses to improve the organisation of wards and put patients at the centre of care.
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This app helps nurses to improve the organisation of wards and put patients at the centre of care.
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Acoustic perfect absorbers via spiral metasurfaces with embedded apertures
Applied Physics Letters, 2018In this work, we analytically and experimentally present perfect acoustic absorbers via spiral metasurfaces composed of coiled channels and embedded apertures.
Sibo Huang +5 more
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