Results 21 to 30 of about 233,126 (310)

Gravitation-based personalized recommendation algorithm

open access: yes工程科学学报, 2015
A recommendation algorithm is proposed by introducing the universal law of gravitation into a recommendation system. This new algorithm is named as the gravitation-based personalized recommendation (GBPR) algorithm.
WANG Guo-xia, LIU He-ping, LI Qing
doaj   +1 more source

Probing Yukawian gravitational potential by numerical simulations. I. Changing N-body codes [PDF]

open access: yes, 2009
In the weak field limit general relativity reduces, as is well known, to the Newtonian gravitation. Alternative theories of gravity, however, do not necessarily reduce to Newtonian gravitation; some of them, for example, reduce to Yukawa-like potentials ...
A. Toomre   +16 more
core   +1 more source

On the invisibility and impact of Robert Hooke’s theory of gravitation

open access: yesOpen Philosophy, 2020
Robert Hooke’s theory of gravitation is a promising case study for probing the fruitfulness of Menachem Fisch’s insistence on the centrality of trading zone mediators for rational change in the history of science and mathematics.
Guicciardini Niccolò
doaj   +1 more source

Are Newtonian Gravitation and Geometrized Newtonian Gravitation Theoretically Equivalent? [PDF]

open access: yes, 2014
I argue that a criterion of theoretical equivalence due to Clark Glymour [Nous 11(3), 227-251 (1977)] does not capture an important sense in which two theories may be equivalent.
Weatherall, James Owen
core   +4 more sources

Predictions and Outcomes for the Dynamics of Rotating Galaxies

open access: yesGalaxies, 2020
A review is given of a priori predictions made for the dynamics of rotating galaxies. One theory—MOND—has had many predictions corroborated by subsequent observations.
Stacy McGaugh
doaj   +1 more source

Statistical Mechanics-Based Schrödinger Treatment of Gravity

open access: yesEntropy, 2019
The entropic gravity conception proposes that what has been traditionally interpreted as unobserved dark matter might be merely the product of quantum effects.
Angelo Plastino, M. C. Rocca
doaj   +1 more source

Einstein’s Geometrical versus Feynman’s Quantum-Field Approaches to Gravity Physics: Testing by Modern Multimessenger Astronomy

open access: yesUniverse, 2020
Modern multimessenger astronomy delivers unique opportunity for performing crucial observations that allow for testing the physics of the gravitational interaction.
Yurij Baryshev
doaj   +1 more source

Interplay of gravitation and linear superposition of different mass eigenstates [PDF]

open access: yes, 1998
The interplay of gravitation and the quantum-mechanical principle of linear superposition induces a new set of neutrino oscillation phases. These ensure that the flavor-oscillation clocks, inherent in the phenomenon of neutrino oscillations, redshift ...
A. Halprin   +27 more
core   +2 more sources

Gravitational Lensing of Continuous Gravitational Waves [PDF]

open access: yesUniverse, 2021
Continuous gravitational waves are analogous to monochromatic light and could therefore be used to detect wave effects such as interference or diffraction. This would be possible with strongly lensed gravitational waves. This article reviews and summarises the theory of gravitational lensing in the context of gravitational waves in two different ...
Marek Biesiada, Sreekanth Harikumar
openaire   +3 more sources

Some applications of the Shapiro time delay [PDF]

open access: yesSerbian Astronomical Journal, 2023
Listening to echoes has long been a way to estimate distances, a technique whose backbone is the time delay. The gravitational field also creates a time delay, called Shapiro time delay, that helps us extract some information from the field and ...
Ghasemi Azar A., Rezaei H., Moradpour H.
doaj   +1 more source

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