Results 211 to 220 of about 240,730 (259)
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Cross-Frequency Coupling in Childhood Absence Epilepsy
Brain Connectivity, 2022Objective: Absence seizures are the prototypic primarily generalized seizures, but there is incomplete understanding regarding their generation and maintenance. A core network for absence seizures has been defined, including focal cortical and thalamic regions that have frequency-dependent interactions.
Jeffrey R. Tenney +2 more
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Effects of reactor geometry and frequency coupling on dual-frequency capacitively coupled plasmas
Plasma Sources Science and Technology, 2013In dual-frequency (DF) capacitively coupled plasma discharges, the effect of reactor geometry on the plasma density is investigated by means of a two-dimensional self-consistent fluid model combined with a power supply computation module. The results indicate that by enlarging the inter-electrode gap or by blocking the electrode with dielectric ...
Zhen-Hua Bi +4 more
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Frequency Modulated Coupled Oscillator Arrays
31st European Microwave Conference, 2001, 2001A linear array of oscillators each connected to a radiator to combine output power of the oscillators in free-space can be used in order to scan the radiated beam electronically by controlling free-running frequencies of both end oscillators. We applied this technique to Frequency Modulated Continuous Wave (FMCW) radar to perform electronically beam ...
Ragip Ispir +4 more
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Frequency reconfigurable aperture coupled antenna
2012 6th European Conference on Antennas and Propagation (EUCAP), 2012The design of wideband log-periodic aperture coupled with frequency agility is studied for modern-day wireless communication application. The antenna is constructed on FR-4 substrate. Seven square patches are used in a log-periodic formation to achieved wide bandwidth of 37% or from 3.8 GHz to 5.5 GHz.
M. F. Ismail +5 more
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Frequency locking in weakly coupled lasers
Optics Letters, 1985An important question concerning coupled lasers is the range of optical-resonator length fluctuations over which frequency locking occurs. In this Letter, an analytical expression for the lock band is derived.
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Cross-frequency coupling and memory
Clinical Neurophysiology, 2016According to an influential model, working memory (WM) depends on an interaction between neural oscillations of two different frequencies. This model assumes that individual items are represented by neural assemblies synchronized at high frequency. During maintenance of multiple items, these representations are reactivated during specific phases of ...
N. Axmacher, M. Leszczynski, J. Fell
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Borehole coupling at sonic frequencies
GEOPHYSICS, 1990An elastic plane wave incident on a borehole couples through the borehole wall to produce a compressional wave inside the borehole, and the effect of this coupling varies with incident angle. Imaging experiments that include a downhole source and/or hydrophones must account for this effect to achieve optimal results. In configurations pertinent to VSP
J. R. Lovell, B. E. Hornby
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Frequency of Sexual Dysfunction in “Normal” Couples
New England Journal of Medicine, 1978In analyzing the responses of 100 predominantly white, well educated and happily married couples to a self-report questionnaire, this study examined the frequency of sexual problems experienced and the relations of those problems to sexual satisfaction. Although over 80 per cent of the couples reported that their marital and sexual relations were happy
E, Frank, C, Anderson, D, Rubinstein
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Capacitance-Coupled Intermediate-Frequency Amplifiers
Proceedings of the IRE, 1947This paper discusses the performance characteristics of capacitance-coupled intermediate-frequency-amplifier circuits. Double-ended loading is preferred to single-ended loading in order to satisfy practical tolerance requirements. An approximate method is treated for the design of capacitance-coupled attenuating traps for a television intermediate ...
M.J. Larsen, L.L. Merrill
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Capacitively coupled radio frequency discharges
AIP Conference Proceedings, 1996A review is given of research carried out on capacitively coupled radio frequency discharges in the Department of Engineering Science at Oxford University.
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