نتایج جستجو برای: astronomical catalogues

تعداد نتایج: 10370  

Journal: :AI Magazine 1991
Patrick Saint-Dizier

The Department of Electronics, Government of India, with the assistance of the United Nations Development Program (UNDP) decided in 1986 to support a five-year project on knowledge-based computer systems (KBCSs). Seven major research and teaching centers and a number of associated institutions are involved in the project. The nodal centers in this project are the Center for the Development of A...

2013
ROBIN BERGH

Bergh, R. 2013. Prejudiced Personalities Revisited On the Nature of (Generalized) Prejudice. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Social Sciences 91. 118 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-554-8810-9. In the media, one type of prejudice is often discussed as isolated from other types of prejudice. For example, after Breivik’s massacr...

2008
Todd Mytkowicz Peter F. Sweeney Matthias Hauswirth Amer Diwan

To evaluate an innovation in computer systems, performance analysts measure execution time or other metrics using one or more standard workloads. The performance analyst may carefully minimize the amount of measurement instrumentation, control the environment in which measurement takes place, and repeat each measurement multiple times. Finally, the performance analyst may use statistical techni...

2007
Tobias Kraft

Query generators producing sequences of SQL statements are embedded in many applications. As the execution time of such sequences is often far from optimal, their optimization is an important issue. Therefore, in [5] we proposed a rule-based optimization approach, which we called CGO (Coarse-Grained Optimization). Our first prototype used a heuristic, priority-based control strategy to choose t...

2005
Jennifer L.M. Rupp Anna Infortuna Ludwig J. Gauckler

The grain coarsening in dense nanocrystalline gadolinia-doped ceria (CGO) and CeO2 was studied for the grain size regime from 10 to 250 nm. Dense ceria-based thin films were prepared by spray pyrolysis and pulsed laser deposition on sapphire substrates. The small grain-sized CGO and CeO2 microstructures were surprisingly stable and showed self-limited grain growth and relaxation of the microstr...

2015
Todd Mytkowicz Peter Sweeney Matthias Hauswirth Amer Diwan Peter F. Sweeney

To evaluate an innovation in computer systems, performance analysts measure execution time or other metrics using one or more standard workloads. The performance analyst may carefully minimize the amount of measurement instrumentation, control the environment in which measurement takes place, and repeat each measurement multiple times. Finally, the performance analyst may use statistical techni...

2014
Sarah Jane Hamilton Andreas Hauptmann Samuli Siltanen

In Electrical Impedance Tomography (EIT), the internal conductivity of a body is recovered via current and voltage measurements taken at its surface. The reconstruction task is a highly ill-posed nonlinear inverse problem, which is very sensitive to noise, and requires the use of regularized solution methods, of which D-bar is the only proven method. The resulting EIT images have low spatial re...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2016
Paul Gabrielsen

In early 2016, Oxford University astrophysicist Steven Balbus was filling in for a colleague, teaching a course on general relativity. Although not an expert in relativity before the course, Balbus felt growing admiration for Albert Einstein’s century-old theory. In February, during the course, Balbus and others around the world heard news out of the Laser Interferometer Gravitational-Wave Obse...

Journal: :space ontology international journal 2015
javad shekari niri

maraghe observatory was built by such engineers as moayiededdin orozi etc. under supervision of khaje nasireddin tousi in 7th century ah. the most significant feature associated with maraghe observatory is the fact that architecture is employed to achieve astronomical purposes in this site. the reason for preferring observatory by astronomers was the fact that these units are superior to wooden...

1999
A. R. Duncan

Polarimetric data from the 2.695 GHz Effelsberg survey of the Galactic Plane have been reduced, resulting in images of the Stokes Q and U emission components over Galactic longitudes given by 74◦ ≥ l ≥ 4. ◦9, at a resolution of 4.′3. This extends the earlier work of Junkes et al. (1987a) out to the latitude limit of the survey observations (b = ±5◦). Patchy, diffuse polarised emission is seen t...

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