Results 21 to 30 of about 2,237,671 (335)

A computational model of the referential semantics of projective prepositions [PDF]

open access: yes, 2006
In this paper we present a framework for interpreting locative expressions containing the prepositions in front of and behind. These prepositions have different semantics in the viewer-centred and intrinsic frames of reference (Vandeloise, 1991).
Kelleher, John D., van Genabith, Josef
core   +2 more sources

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

A Unified Global Reference Frame of Vertical Crustal Movements by Satellite Laser Ranging

open access: yesSensors, 2016
Crustal movement is one of the main factors influencing the change of the Earth system, especially in its vertical direction, which affects people’s daily life through the frequent occurrence of earthquakes, geological disasters, and so on.
Xinhui Zhu   +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

Should there be a spin-rotation coupling for a Dirac particle? [PDF]

open access: yes, 2013
It was argued by Mashhoon that a spin-rotation coupling term should add to the Hamiltonian operator in a rotating frame, as compared with the one in an inertial frame.
Arminjon, Mayeul
core   +3 more sources

Different roles of alpha and beta band oscillations in sensorimotor gating

open access: yesFrontiers in Human Neuroscience, 2014
Alpha (8-12Hz) and beta band (18-30Hz) oscillations have been implicated in sensory anticipation and motor preparation. Here, using magneto-encephalography, we tested whether they have distinct functional roles in a saccade task that induces a remapping ...
Verena Nadine Buchholz   +3 more
doaj   +1 more source

Roles of the Retinotopic and Environmental Frames of Reference on Vection

open access: yesFrontiers in Virtual Reality, 2020
Humans perceive self-motion using multisensory information, while vision has a dominant role as is utilized in virtual reality (VR) technologies. Previous studies reported that visual motion presented in the lower visual field (LoVF) induces stronger ...
Kanon Fujimoto   +2 more
doaj   +1 more source

Concept of spatial coordinate systems, their defining and implementation as a precondition in geospatial applications [PDF]

open access: yesGlasnik Srpskog Geografskog Društva, 2015
There are many users of spatial information, and quite large interest about the nature and genesis of such information. Different users found spatial information in the form of maps, plans or alphanumerical tables. Recently, there are more often
Nedeljković Zoran, Sekulić Aleksandar
doaj   +1 more source

Adaptive training‐feedback scheme for FDD in massive MIMO systems

open access: yesIET Communications, 2023
Accurate acquisition of channel state information (CSI) is crucial but difficult in frequency division duplex (FDD) massive multiple‐input multiple‐output (MIMO) systems.
Yi Huang   +3 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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