Results 11 to 20 of about 50,863 (244)
Partial gravity compensation of a surgical robot [PDF]
International Journal of Advanced Robotic Systems, 2021 Surgical robots are safety-critical devices that require multiple domains of safety features. This article focuses on the passive gravity compensation design optimization of a surgical robot.
Omar W Maaroof +2 more
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Neurophysiological effects of partial gravity on bimanual control: a parabolic flight study [PDF]
npj MicrogravityBimanual coordination is essential for many spaceflight tasks, yet the effects of altered gravity on its behavioral and neural underpinnings remain unclear.
Deanna M. Kennedy +8 more
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JT gravity from partial reduction and defect extremal surface
Journal of High Energy Physics, 2023 We propose the three-dimensional counterpart for Jackiw-Teitelboim gravity coupled with CFT2 bath based on partial reduction. The three-dimensional counterpart is classical AdS gravity with a defect brane which has small fluctuation in transverse ...
Feiyu Deng, Yu-Sen An, Yang Zhou
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The partial Bondi gauge: Further enlarging the asymptotic structure of gravity
SciPost Physics, 2022 We present a detailed analysis of gravity in a partial Bondi gauge, where only the three conditions $g_{rr}=0=g_{rA}$ are fixed. We relax in particular the so-called determinant condition on the transverse metric, which is only assumed to admit a ...
Marc Geiller, Céline Zwikel
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Gravity-awareness: a deep learning and LLM framework for predicting human adaptation to altered gravitational environments [PDF]
Frontiers in PsychologyEarth’s gravity fundamentally shapes human behavior. The brain encodes this force as an internal model of gravity, enabling the prediction and interpretation of gravitational effects during perception and action.
Bakytzhan Alibekov +2 more
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Approaching Gravity as a Continuum Using the Rat Partial Weight-Bearing Model
Life, 2020 For decades, scientists have relied on animals to understand the risks and consequences of space travel. Animals remain key to study the physiological alterations during spaceflight and provide crucial information about microgravity-induced changes ...
Marie Mortreux, Megan E. Rosa-Caldwell
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Estrogen Receptor Alpha (ERα) Is Involved in Resveratrol-Mediated Muscle Preservation During Mechanical Unloading in Male Rats [PDF]
MusclesNASA intends to return humans to the Moon, where partial gravity will put them at risk of musculoskeletal deconditioning. Resveratrol (RSV) is a promising nutritional countermeasure that may protect muscle health during disuse; however, its efficacy and ...
David Ayi-Bonte +7 more
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Geodesic Incompleteness and Partially Covariant Gravity [PDF]
Universe, 2021 We study the issue of length renormalization in the context of fully covariant gravity theories as well as non-relativistic ones such as Hořava–Lifshitz gravity. The difference in their symmetry groups implies a relation among the lengths of paths in spacetime in the two types of theory.
Antoniadis, Ignatios, Cotsakis, Spiros
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Partial masslessness and conformal gravity [PDF]
Journal of Physics A: Mathematical and Theoretical, 2013 We use conformal, but ghostful, Weyl gravity to study its ghost-free, second derivative, partially massless (PM) spin 2 component in presence of Einstein gravity with positive cosmological constant. Specifically, we consider both gravitational- and self- interactions of PM via the fully non-linear factorization of conformal gravity's Bach tensor into ...
Deser, S., Joung, E., Waldron, A.
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On partially massless bimetric gravity [PDF]
Physics Letters B, 2013 We extend the notion of the Higuchi bound and partial masslessness to ghost-free nonlinear bimetric theories. This can be achieved in a simple way by first considering linear massive spin-2 perturbations around maximally symmetric background solutions, for which the linear gauge symmetry at the Higuchi bound is easily identified.
Hassan, S. F. +2 more
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