Results 21 to 30 of about 514,484 (308)

GOM20: A Stable Geodetic Reference Frame for Subsidence, Faulting, and Sea-Level Rise Studies along the Coast of the Gulf of Mexico

open access: yesRemote Sensing, 2020
We have established a stable regional geodetic reference frame using long-history (13.5 years on average) observations from 55 continuously operated Global Navigation Satellite System (GNSS) stations adjacent to the Gulf of Mexico (GOM).
Guoquan Wang   +6 more
doaj   +1 more source

Error Correction of Quantum Reference Frame Information

open access: yesPRX Quantum, 2021
The existence of quantum error-correcting codes is one of the most counterintuitive and potentially technologically important discoveries of quantum-information theory.
Patrick Hayden   +3 more
doaj   +1 more source

Four-state reference-frame-independent quantum key distribution with non-qubit sources

open access: yes, 2021
The discrepancy between theory and experiment severely limits the development of quantum key distribution (QKD). Reference-frame-independent (RFI) protocol has been proposed to avoid alignment of the reference frame.
Yuqing Huang (153028)   +8 more
core   +1 more source

ETRS89/D96-17 – Rezultat GNSS-izmere EUREF Slovenija 2016 ( = ETRS89/D96-17 – A result of the EUREF Slovenia 2016 GNSS campaign) [PDF]

open access: yesGeodetski Vestnik, 2020
The horizontal component of the national spatial reference system of Slovenia is based on EUREF GPS campaigns at the passive GNSS-network of EUREF sites in the years 1994–1996.
Sandi Berk   +3 more
doaj   +1 more source

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   +2 more
core   +1 more source

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

The Celestial Reference Frame at K Band: Imaging. I. The First 28 Epochs

open access: yes, 2023
We present K -band (24 GHz) images of 731 compact extragalactic radio sources with submilliarcsecond resolution, based on radio interferometric observations made with the Very Long Baseline Array of 10 telescopes during 29 day long sessions spanning from
K-band Celestial Reference Frame Collaboration   +6 more
core   +1 more source

Frames of Reference [PDF]

open access: yesJournal of Applied Social Science, 2016
Unforeseen obstacles and inefficiencies may arise when medical organizations seek to implement protocols that rely upon cooperation and coordination by clinical practitioners from multiple disciplines, departments, and professional orientations. In this reflection, we discuss some ways in which sociological concepts may be useful in forestalling and ...
J.E. Sumerau, Deborah Cragun
openaire   +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

Nutation and Reference Frame [PDF]

open access: yesHighlights of Astronomy, 1995
The reference frames are of fundamental importance in all kinds of the precession and nutation studies involving the theory, the coordinate transformation and the observations. The aim of this paper is to review all the frames used in such studies and to lead to a better consistency between them in order that theory and reductions of observations be ...
openaire   +1 more source

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