Results 291 to 300 of about 7,764,522 (352)
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Autism Spectrum Disorder: A Review.
Journal of the American Medical Association (JAMA), 2023Importance Autism spectrum disorder (ASD), characterized by deficits in social communication and the presence of restricted, repetitive behaviors or interests, is a neurodevelopmental disorder affecting approximately 2.3% children aged 8 years in the US ...
T. Hirota, B. King
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Telecommunications Policy, 2012
Radio spectrum is a scarce resource; understanding its economic value is one piece of information needed to manage it efficiently. Estimating the value of radio spectrum, however, creates significant challenges not found in valuing some other assets. Spectrum is somewhat of a special case; market transactions provide a basis for valuation, but almost ...
Coleman Bazelon, Giulia McHenry
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Radio spectrum is a scarce resource; understanding its economic value is one piece of information needed to manage it efficiently. Estimating the value of radio spectrum, however, creates significant challenges not found in valuing some other assets. Spectrum is somewhat of a special case; market transactions provide a basis for valuation, but almost ...
Coleman Bazelon, Giulia McHenry
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2011
This chapter presents some simple results on graph spectra.We assume the reader is familiar with elementary linear algebra and graph theory. Throughout, J will denote the all-1 matrix, and 1 is the all-1 vector.
Brouwer, A.E., Haemers, W.H.
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This chapter presents some simple results on graph spectra.We assume the reader is familiar with elementary linear algebra and graph theory. Throughout, J will denote the all-1 matrix, and 1 is the all-1 vector.
Brouwer, A.E., Haemers, W.H.
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Journal of the Optical Society of America B, 1999
On the basis of all the available observations of the Ne vi spectrum, particularly the new beam-foil spectra obtained at Liege University, approximately 50 new line assignments are proposed and approximately 30 new energy levels are determined in Ne vi. All known energy levels have been improved, and a new value is proposed for the ionization potential.
Kramida, A. E. +4 more
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On the basis of all the available observations of the Ne vi spectrum, particularly the new beam-foil spectra obtained at Liege University, approximately 50 new line assignments are proposed and approximately 30 new energy levels are determined in Ne vi. All known energy levels have been improved, and a new value is proposed for the ionization potential.
Kramida, A. E. +4 more
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The spectrum of inflammatory responses
Science, 2021Description Inflammation is an integral part of animal biology. It provides critical protection from adverse environmental factors by enforcing the defense of homeostasis and the functional and structural integrity of tissues and organs.
R. Medzhitov
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Absorption Spectrum versus Excitation Spectrum of Pyrazine
Berichte der Bunsengesellschaft für physikalische Chemie, 1988AbstractThe first ME spectrum of pyrazine was measured as an excitation spectrum. Assuming the quantum yield to be constant over the spectrum it was considered as an absorption spectrum and de‐diagonalisation led to zero order energies and coupling constants of the singlet and triplet states.
DRABE, KE +3 more
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An absorption profile centred at 78 megahertz in the sky-averaged spectrum
Nature, 2018After stars formed in the early Universe, their ultraviolet light is expected, eventually, to have penetrated the primordial hydrogen gas and altered the excitation state of its 21-centimetre hyperfine line.
J. Bowman +4 more
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Voice Spectrum and Sidetone Spectrum
1974When a speaker hears his own voice fed back to him with altered intensity or timing, he adjusts the properties of his speech to compensate for the apparent distortion of his message. These adjustments appear to be designed to provide the listener with intelligible messages rather than to provide the speaker with some acoustic feedback required for ...
Harlan Lane, A. P. Van Teslaar
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2019
In this book all Hilbert spaces will be assumed to separable for simplicity. In this section we review some basic definitions and properties; we refer to Kato (Perturbation theory for linear operators, Die Grundlehren der mathematischen Wissenschaften, Band 132. Springer, New York, 1966), Reed and Simon (Methods of modern mathematical physics.
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In this book all Hilbert spaces will be assumed to separable for simplicity. In this section we review some basic definitions and properties; we refer to Kato (Perturbation theory for linear operators, Die Grundlehren der mathematischen Wissenschaften, Band 132. Springer, New York, 1966), Reed and Simon (Methods of modern mathematical physics.
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