Results 11 to 20 of about 672,012 (266)

STATISTIC OF SEASONAL AND DIURNAL VARIATIONS OF DOPPLER FREQUENCY SHIFT OF HF SIGNALS AT MID-LATITUDE RADIO PATH [PDF]

open access: yesRadio 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
doaj   +1 more source

Normative values of visual evoked potential in adults

open access: yesIndian 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
doaj   +1 more source

Algebras for amplitudes [PDF]

open access: yesJournal of High Energy Physics, 2012
Abstract Tree-level amplitudes of gauge theories are expressed in a basis of auxiliary amplitudes with only cubic vertices. The vertices in this formalism are explicitly factorized in color and kinematics, clarifying the color-kinematics duality in gauge theory amplitudes.
Bjerrum-Bohr, N. Emil J.   +3 more
openaire   +2 more sources

A universal broadband and CEP stable seeder for high-power amplifiers [PDF]

open access: yesEPJ Web of Conferences
This work presents a universal seeder architecture based on filamentation and parametric amplification from an Ytterbium pump laser for the generation of pulses with versatile properties in terms of central wavelength, bandwidth, CEP, and contrast for ...
Maksimenka Raman   +7 more
doaj   +1 more source

Experimental demonstration of a temporal pulse shaping method based on nonlinear chirp [PDF]

open access: yesEPJ Web of Conferences
We present a general temporal shaping method based on spectral phase-only modulation for ultrafast laser sources. We explain the working principle of this technique and use it experimentally to generate a ramp-shaped pulse at the output of a laser source
Parize Gautier   +5 more
doaj   +1 more source

Comparison of Propofol and Ketofol on Transcranial Motor Evoked Potentials in Patients Undergoing Thoracolumbar Spine Surgery [PDF]

open access: yesAsian Spine Journal, 2022
Study Design This was a double-blind randomized study. Purpose The primary purpose was to compare the effects of propofol and ketofol on amplitudes and latencies of transcranial motor evoked potentials (TcMEPs) during thoracolumbar spine surgery.
Ankur Khandelwal   +4 more
doaj   +1 more source

A course in amplitudes [PDF]

open access: yesPhysics Reports, 2017
This a pedagogical introduction to scattering amplitudes in gauge theories. It proceeds from Dirac equation and Weyl fermions to the two pivot points of current developments: the recursion relations of Britto, Cachazo, Feng and Witten, and the unitarity cut method pioneered by Bern, Dixon, Dunbar and Kosower.
openaire   +3 more sources

DYNAMIC AND MATHEMATICAL MODELS OF THE HYDROIMPULSIVE VIBRO-CUTTING DEVICE WITH A PRESSURE PULSE GENERATOR BULT INTO THE RING SPRING

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2022
Structural calculation scheme of the hydropulse device for vibration cutting with built-in ring with pressure pulse generator (PPG) is considered. On the basis of the structural scheme and cyclogram of the working cycle of the device, its dynamic and ...
Roman Obertyukh   +5 more
doaj   +1 more source

Faster amplitude estimation [PDF]

open access: yesQuantum Information and Computation, 2020
In this paper, we introduce an efficient algorithm for the quantum amplitude estimation task which is tailored for near-term quantum computers. The quantum amplitude estimation is an important problem which has various applications in fields such as quantum chemistry, machine learning, and finance.
openaire   +2 more sources

The Variation of the Linewidths and Amplitudes of Sub-Doppler Resonances of 87Rb D2 Line with Laser Beam Intensity

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
The sub-Doppler resonances linewidths and amplitudes depend on the laser beam intensity. The effect of laser beam intensity on the resonance linewidths and amplitudes obtained from different energy transitions of atoms varies from resonance to resonance.
Ersoy Şahin
doaj   +1 more source

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