Results 1 to 10 of about 145,673 (323)

Assessment and Measurement of the Side-Effects of an Evidence-Based Intervention with an Advanced Smart Cricket Ball Exemplified by a Case Report on Correcting Illegal Bowling Action [PDF]

open access: yesSensors
Correcting an illegal bowling action in cricket through technical intervention involves modifying a movement pattern. This study evaluated the success of an intervention aimed at correcting the suspect actions of two off-spin bowlers and assessed whether
René E. D. Ferdinands   +2 more
doaj   +2 more sources

Quasiperiodic spin-orbit motion and spin tunes in storage rings [PDF]

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2004
We present an in-depth analysis of the concept of spin precession frequency for integrable orbital motion in storage rings. Spin motion on the periodic closed orbit of a storage ring can be analyzed in terms of the Floquet theorem for equations of motion
D. P. Barber   +2 more
doaj   +5 more sources

Experimental model for the description of the behaviour of a 9-mm projectile at a target

open access: yesForensic Sciences Research, 2021
Analysis of crime scenes involving single-fire-gun projectiles requires the determination of the direction of arrival of a projectile at the target and other factors to reconstruct events.
Patricia Morales-Vega   +3 more
doaj   +1 more source

Griffin and Hero-Deer in cosmological composition, as practical model of social development of ancient societies, on example of Pazyryk carpet (V century BC) [PDF]

open access: yesArchaeoastronomy and Ancient Technologies, 2013
The Eurasian tradition in general and, in particular, in the Scythian outlook, reveal two astral tradition of constructing social relations, by analogy with the observed picture of the sky, which is reflected in the monuments of visual culture.
Polyakova, O.O.
doaj   +1 more source

Analyzing the Motion of Symmetric Tops Without Recurring to Analytical Mechanics

open access: yesFrontiers in Physics, 2020
Characterizing the dynamics of heavy symmetric tops is essential in several fields of theoretical and applied physics. Accordingly, a series of approaches have been developed to describe their motion.
Zsolt I. Lázár   +3 more
doaj   +1 more source

'Orbital, the Box' – an Interactive Educational Tool for In-depth Understanding of Astronomical Climate Forcing

open access: yesOpen Quaternary, 2022
“'Orbital, the Box”' provides an interactive tool with graphical user interface (GUI) for stimulating active, visual learning for understanding of astronomical climate forcing.
Bryan C. Lougheed
doaj   +1 more source

Twenty characters long account of the Mayan among the constellations [PDF]

open access: yesArchaeoastronomy and Ancient Technologies, 2013
This paper is devoted to the study of astronomical twenty characters long count calendar of the Maya and their compliance with generally accepted modern constellations and zodiac signs.
Polyakova, O.O.
doaj   +1 more source

Prograde and retrograde precession of a fluid-filled cylinder

open access: yesNew Journal of Physics, 2021
We numerically study precession driven flows in a cylindrical container whose nutation angle varies between 60 and 90 degrees for prograde and retrograde precession.
Federico Pizzi   +3 more
doaj   +1 more source

Is OJ 287 a Single Supermassive Black Hole?

open access: yesUniverse, 2020
Light curves for more than century optical photometric observations of the blazar OJ 287 reveals strong flares with a quasi-period of about 12 years. For a long time, this period has been interpreted by processes in a binary black hole system. We propose
Marina S. Butuzova   +1 more
doaj   +1 more source

INFLUENCE OF CONTROL CURRENT WAVEFORM ON ROTOR NUTATION OF THREE-DEGREES-OF-FREEDOM ELECTRIC MACHINE

open access: yesТехнічна електродинаміка, 2023
The design of the electric machine with three degrees of freedom of the rotor with an external magnetic core, containing permanent magnets, and an internal magnetic core is considered. The both magnetic cores are rotating.
І.С. Пєтухов   +3 more
doaj   +1 more source

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