Results 31 to 40 of about 6,446,922 (262)

The Galactic Center: An Improved Astrometric Reference Frame for Stellar Orbits around the Supermassive Black Hole [PDF]

open access: yesAstrophysical Journal, 2019
Precision measurements of the stars in short-period orbits around the supermassive black hole at the Galactic Center are now being used to constrain general relativistic effects, such as the gravitational redshift and periapse precession.
S. Sakai   +10 more
semanticscholar   +1 more source

Effects of initial eye position on saccades evoked by microstimulation in the primate superior colliculus: implications for models of the SC read-out process

open access: yesFrontiers in Integrative Neuroscience, 2011
The motor layers of the superior colliculus (SC) are thought to specify saccade amplitude and direction, independent of initial eye position. However, recent evidence suggests that eye position can modulate the level of activity of SC motor neurons.
Jennifer M Groh   +3 more
doaj   +1 more source

The Two-Wrongs model explains perception-action dissociations for illusions driven by distortions of the egocentric reference frame

open access: yesFrontiers in Human Neuroscience, 2015
Several studies have demonstrated a dissociation of the effects of illusion on perception and action, with perception generally reported to be susceptible to illusions, while actions are seemingly immune.
Paul eDassonville, Scott Allan Reed
doaj   +1 more source

Deformed symmetries from quantum relational observables [PDF]

open access: yes, 2007
Deformed Special Relativity (DSR) is a candidate phenomenological theory to describe the Quantum Gravitational (QG) semi-classical regime. A possible interpretation of DSR can be derived from the notion of deformed reference frame.
Girelli, Florian, Poulin, David
core   +1 more source

De la notion au référentiel international de politique publique. Le savant, l’expert et le politique dans la construction du vieillissement actif

open access: yesRecherches Sociologiques et Anthropologiques, 2013
The goal of this article is to show how, from a simple concept, “active ageing” was gradually transformed into an international frame of reference in public policies on the subject of ageing.
Thibauld Moulaert   +1 more
doaj   +1 more source

Classical and quantum communication without a shared reference frame [PDF]

open access: yes, 2003
We show that communication without a shared reference frame is possible using entangled states. Both classical and quantum information can be communicated with perfect fidelity without a shared reference frame at a rate that asymptotically approaches one
C. H. Bennett   +8 more
core   +2 more sources

SIRGAS reference frame analysis at DGFI–TUM

open access: yesJournal of Geodetic Science, 2022
The Deutsches Geodätisches Forschungsinstitut (DGFI) has been involved in the research activities of the Latin American Reference Frame SIRGAS since its establishment in 1993.
Sánchez Laura   +3 more
doaj   +1 more source

Sensorless Control Scheme of IPMSMs Using HF Orthogonal Square-Wave Voltage Injection Into a Stationary Reference Frame

open access: yesIEEE transactions on power electronics, 2019
This paper proposes a new sensorless control scheme of interior permanent magnet synchronous motors (IPMSMs) using high-frequency (HF) orthogonal square-wave voltage injection into a stationary reference frame (SRF).
Gaolin Wang   +5 more
semanticscholar   +1 more source

Spatial task context makes short-latency reaches prone to induced Roelofs illusion

open access: yesFrontiers in Human Neuroscience, 2014
The perceptual localization of an object is often more prone to illusions than an immediate visuomotor action towards that object. The induced Roelofs effect (IRE) probes the illusory influence of task-irrelevant visual contextual stimuli on the ...
Bahareh eTaghizadeh   +4 more
doaj   +1 more source

Coordinated Control of Wind Energy Conversion System during Unsymmetrical Fault at Grid

open access: yesEnergies, 2022
High penetration of wind power into the grid necessitates the coordinated action of wind energy conversion systems and the grid. A suitable generation control is required to fulfill the grid integration requirements, especially during faults.
Hemant Ahuja   +4 more
doaj   +1 more source

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