Results 21 to 30 of about 6,446,922 (262)
Operational Quantum Reference Frame Transformations [PDF]
QuantumQuantum reference frames are needed in quantum theory for much the same reasons that reference frames are in classical theories: to manifest invariance in line with fundamental relativity principles and to provide a basis for the definition of observable
Titouan Carette +2 more
doaj +1 more source
Concept of spatial coordinate systems, their defining and implementation as a precondition in geospatial applications [PDF]
Glasnik 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
Gaia Data Release 2: The Celestial reference frame (Gaia-CRF2) [PDF]
, 2018 The second release of Gaia data (Gaia DR2) contains the astrometric parameters for more than half a million quasars. This set defines a kinematically non-rotating reference frame in the optical domain referred to as the Gaia-CRF2.
F. Mignard +5 more
semanticscholar +1 more source
The Gaia reference frame for bright sources examined using VLBI observations of radio stars [PDF]
Astronomy & Astrophysics, 2019 Context. Positions and proper motions of Gaia sources are expressed in a reference frame that ideally should be non-rotating relative to distant extragalactic objects, coincident with the International Celestial Reference System (ICRS), and consistent ...
L. Lindegren
semanticscholar +1 more source
Roles of the Retinotopic and Environmental Frames of Reference on Vection
Frontiers 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
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Adaptive training‐feedback scheme for FDD in massive MIMO systems
IET 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
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Photon Bunching in a Rotating Reference Frame. [PDF]
Physical Review Letters, 2019 Although quantum physics is well understood in inertial reference frames (flat spacetime), a current challenge is the search for experimental evidence of nontrivial or unexpected behavior of quantum systems in noninertial frames. Here, we present a novel
S. Restuccia +5 more
semanticscholar +1 more source
A Unified Global Reference Frame of Vertical Crustal Movements by Satellite Laser Ranging
Sensors, 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
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Different roles of alpha and beta band oscillations in sensorimotor gating
Frontiers 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
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, 2016 For the first time in the International Terrestrial Reference Frame (ITRF) history, the ITRF2014 is generated with an enhanced modeling of nonlinear station motions, including seasonal (annual and semiannual) signals of station positions and postseismic ...
Z. Altamimi +3 more
semanticscholar +1 more source