Results 21 to 30 of about 731,929 (298)
STATISTIC OF SEASONAL AND DIURNAL VARIATIONS OF DOPPLER FREQUENCY SHIFT OF HF SIGNALS AT MID-LATITUDE RADIO PATH [PDF]
Radio Physics and Radio Astronomy, 2020 Purpose: An experimental study of signatures of traveling ionospheric disturbances (TID) observed in diurnal-seasonal variations of the parameters of probe HF signals propagating on theoblique single-hop RWM–LFO radio path, derived from the yearlong ...
A. I. Reznychenko +3 more
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Normative values of visual evoked potential in adults
Indian Journal of Ophthalmology, 2021 Purpose: Visual evoked potentials (VEP) are used to determine the function of visual pathway from the optic nerve to visual cortex. Various factors may affect VEP response, viz., technical and environmental.
Merry Septemi Ekayanti +2 more
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Annales Henri Poincaré, 2017 In this work, we argue that the α′→0 limit of closed string theory scattering amplitudes is a tropical limit. The motivation is to develop a technology to systematize the extraction of Feynman graphs from string theory amplitudes at higher genus.
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Journal of High Energy Physics, 2023 Abstract We study scattering amplitudes in the shadow conformal primary basis, which satisfies the same defining properties as the original conformal primary basis and has many advantages over it. The shadow celestial amplitudes exhibit locality manifestly on the celestial sphere, and behave like correlation functions in conformal ...
Chi-Ming Chang +4 more
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Waveforms from amplitudes [PDF]
Physical Review D, 2022 We show how to compute classical wave observables using quantum scattering amplitudes. We discuss observables both with incoming and with outgoing waves. The required classical limits are naturally described by coherent states of massless bosons.
Cristofoli, Andrea +3 more
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TRANSITION DISTRIBUTION AMPLITUDES [PDF]
Exclusive Reactions at High Momentum Transfer, 2008 8 pages, 3 figures, LaTeX, uses ws-procs9x6-notrimmark.cls (included); Invited talk at the workshop on Exclusive Reactions at High Momentum Transfer, 21-24 May 2007, Jefferson Lab, Newport News, VA, U.S ...
Lansberg, J. P. +2 more
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Evaluation of Visual Acuity of Ametropia with Visual Event-Related Potential Nogo-P3 Component
Fayixue Zazhi, 2022 ObjectiveTo analyze the Nogo-P3 component of event-related potential （ERP） in the process of visual acuity processing， to provide electrophysiological evidence for objective evaluation of visual acuity.MethodsTwenty-six subjects with no other ocular ...
JIA Fu-quan +5 more
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The Journal of Chemical Physics, 2017 We present a pulsed dynamic nuclear polarization (DNP) study using a ramped-amplitude nuclear orientation via electron spin locking (RA-NOVEL) sequence that utilizes a fast arbitrary waveform generator (AWG) to modulate the microwave pulses together with samples doped with narrow-line radicals such as 1,3-bisdiphenylene-2-phenylallyl (BDPA), sulfonated-
T. V. Can +4 more
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Frontiers in Sleep, 2023 IntroductionA consolidated sleep-wake pattern is essential for maintaining healthy cognition in older individuals, but many suffer from sleep fragmentation that exacerbates age-related cognitive decline and worsens overall mental and physical health ...
Renske Lok +7 more
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Rekayasa Sipil, 2019 To find out the quality of concrete, we need to test the concrete. Which is non destructive test or testing without damaging the test object, namely with an UPV (Ultrasonic Pulse Velocity). In this study using 4 variations of coarse aggregate composition
Fatma Dora Indriani +2 more
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