Results 21 to 30 of about 29,225,544 (230)
Corrected μβ for stars of Hipparcos catalogue from independent latitude observations over many decades [PDF]
Serbian Astronomical Journal, 2011 During the last century, there were many so-called independent latitude (IL) stations with the observations which were included into data of a few international organizations (like Bureau International de l'Heure - BIH, International Polar ...
Damljanović G., Milić I.S.
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International Astronomical Union Colloquium, 1997 AbstractA reference system is a relation connecting observables and their mathematical represententions. The principle of general relativity assures that any sort of coordinate system can be used to describe physical phenomena. Thus, any reference system is only a convention. There is no absolutely true reference system.
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Ecology and Society, 2005 Flood disturbance processes play a key role in the functioning of riparian ecosystems and in the maintenance of biodiversity along river corridors. As a result, riparian ecosystems can be described as mobile habitat mosaics characterized by variability ...
Francine M. R. Hughes +2 more
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The Journal of Critical Infrastructure Policy, 2022 A reference architecture (RA) provides a common frame of reference with a common vocabulary, reusable designs, and principles that may be applied to future architectures.
Aleksandra Scalco +2 more
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Chemical Science, 2016 We report a global-hybrid approximation, MN15, to the exchange–correlation functional of Kohn–Sham theory with broadly accurate performance for both multi-reference and single-reference systems.
semanticscholar +1 more source
A Data-Driven Model-Reference Adaptive Control Approach Based on Reinforcement Learning [PDF]
IEEE International Symposium on Robotic and Sensors Environments
(ROSE) 2021, 2023 Model-reference adaptive systems refer to a consortium of techniques that guide plants to track desired reference trajectories. Approaches based on theories like Lyapunov, sliding surfaces, and backstepping are typically employed to advise adaptive control strategies. The resulting solutions are often challenged by the complexity of the reference model
arxiv +1 more source
Symposium - International Astronomical Union, 1979 In order to discuss accurately the motions of the Earth in space, it is necessary to define rigorously two readily accessible reference systems. The conception and the realization of celestial absolute systems and terrestrial coordinate systems are discussed.
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THE KINEMATICS PARAMETERS OF THE GALAXY USING DATA OF MODERN ASTROMETRIC CATALOGUES
Odessa Astronomical Publications, 2016 Based on the Ogorodnikov-Milne model, we analyze the proper motions of XPM2, UCAC4 and PPMXL stars. To estimate distances to the stars we used the method of statistical parallaxes herewith the random errors of the distance estimations do not exceed 10 ...
V. S. Akhmetov +3 more
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Spatial reference systems [PDF]
Rudarski radovi, Bor, 2012 Geospatial data gained from different sources have to be referenced to the same geodetic datum and coordinate system. Forming of joint reference system enables easier update and geometric harmonization, access, exchange and use of geospatial data. Horizontal and vertical positions of points are no longer independent components.
Igor Svrkota +2 more
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Chemical Science, 2016 Correction for ‘MN15: A Kohn–Sham global-hybrid exchange–correlation density functional with broad accuracy for multi-reference and single-reference systems and noncovalent interactions’ by Haoyu S. Yu et al., Chem. Sci., 2016, DOI: ; 10.1039/c6sc00705h.
Haoyu S. Yu +3 more
semanticscholar +1 more source