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Good Systems Network Meeting [PDF]

open access: yes, 2020
You're viewing a past event from the Good Systems Grand Challenge team at The University of Texas at Austin that contains two presentations from May 19, 2020.Office of the VP for ...
Good Systems
core   +1 more source

Towards more effective testing of communications-critical large scale systems [PDF]

open access: yes, 2014
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.A publication based on the research from this thesis has been published and can be cited as Nabulsi, MA and Hierons, RM (2014), A new test framework for ...
Nabulsi, Mohammad
core   +7 more sources

Information systems evaluation in the public sector [PDF]

open access: yes, 2002
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Investment appraisal techniques (TAT) range from quantitative (financially based) techniques to qualitative (non-financially based) techniques, and ...
Khalifa, Ghassan R
core   +7 more sources

Spherical trigonometry of the projected baseline angle [PDF]

open access: yesSerbian Astronomical Journal, 2008
The basic vector geometry of a stellar interferometer with two telescopes is defined by the right triangle of (i) the baseline vector between the telescopes, of (ii) the delay vector which points to the star, and of (iii) the projected baseline vector in
Mathar R.J.
doaj   +1 more source

The Effects of Inertial Forces on the Dynamics of Disk Galaxies

open access: yesGalaxies, 2021
When dealing with galactic dynamics, or more specifically, with galactic rotation curves, one basic assumption is always taken: the frame of reference relative to which the rotational velocities are given is assumed to be inertial.
Roy Gomel, Tomer Zimmerman
doaj   +1 more source

First Principles Description of Plasma Expansion Using the Expanding Box Model

open access: yesUniverse, 2023
Multi-scale modeling of expanding plasmas is crucial for understanding the dynamics and evolution of various astrophysical plasma systems such as the solar and stellar winds. In this context, the Expanding Box Model (EBM) provides a valuable framework to
Sebastián Echeverría-Veas   +3 more
doaj   +1 more source

Reference Systems [PDF]

open access: yesInternational 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.
openaire   +1 more source

THE KINEMATICS PARAMETERS OF THE GALAXY USING DATA OF MODERN ASTROMETRIC CATALOGUES

open access: yesOdessa 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
doaj   +1 more source

Corrected μβ for stars of Hipparcos catalogue from independent latitude observations over many decades [PDF]

open access: yesSerbian 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.
doaj   +1 more source

Restoring Riparian Ecosystems: The Challenge of Accommodating Variability and Designing Restoration Trajectories

open access: yesEcology 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
doaj   +1 more source

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