Results 11 to 20 of about 5,871,149 (318)
Full-frequency GW without frequency [PDF]
The Journal of Chemical Physics, 2021 Efficient computer implementations of the GW approximation must approximate a numerically challenging frequency integral; the integral can be performed analytically, but doing so leads to an expensive implementation whose computational cost scales as O(N6), where N is the size of the system. Here, we introduce a new formulation of the full-frequency GW
Sylvia J. Bintrim, Timothy C. Berkelbach
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Chaos: An Interdisciplinary Journal of Nonlinear Science, 2016 We study the dynamics of coupled phase oscillators on a two-dimensional Kuramoto lattice with periodic boundary conditions. For coupling strengths just below the transition to global phase-locking, we find localized spatiotemporal patterns that we call “frequency spirals.” These patterns cannot be seen under time averaging; they become visible only ...
Bertrand Ottino-Löffler +1 more
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, 2023 Given an infinite word with values in a finite alphabet that admit frequencies for all its factors, the smallest frequency function associates with a given positive integer the smallest frequency for factors of this length, and the recurrence function measures the gaps between successive occurrences of factors.
Berthé, Valérie, Mimouni, Ahmed
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Frequency conversion based on three-wave parametric solitons [PDF]
, 2010 Parametric three-wave mixing in quadratic nonlinear crystals provides a versatile means of achieving widely tunable frequency conversion of laser light, thus permitting a substantial extension of the wavelength coverage of laser sources across broad ...
Degasperis, Antonio +17 more
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Frequency-domain precoding for single carrier frequency-division multiple access [PDF]
, 2009 At present there is considerable interest in the use of single carrier frequency-division multiple access. This interest is justified by the inherent single carrier structure of the SC-FDMA scheme, which is more robust against phase noise and has a lower
Nix, AR, Noune, MB
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Planar-Waveguide External Cavity Laser Stabilization for an Optical Link with 1E-19 Frequency Stability [PDF]
, 2011 We stabilized the frequency of a compact planar-waveguide external cavity laser (ECL) on a Fabry-P\'erot cavity (FPC) through a Pound-Drever-Hall scheme.
Davide Calonico +23 more
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Toward Applicable EEG-Based Drowsiness Detection Systems: A Review
Frontiers in Biomedical Technologies, 2022 Purpose: Drowsy driving accounts for many accidents and has attracted substantial research attention in recent years. Electroencephalography (EEG) signals are shown to be a reliable measure for the early detection of drowsiness.
Nasrin Sheibani Asl +3 more
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Frequency-Hopping Wave Engineering with Metasurfaces
, 2023 Wave phenomena can be artificially engineered by scattering from metasurfaces, which aids in the design of radio-frequency and optical devices for wireless communication, sensing, imaging, wireless power transfer and bio/medical applications.
Daisuke Nita (16541400) +4 more
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IEEE Transactions on Power Systems, 2016 Science Foundation ...
Federico Milano, Álvaro Ortega
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