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181. http://www.adass.org/adass/proceedings/adass03/reprints/O8-2.pdf
... Contrary to other PI-based missions, Gaia data is required to reside in a database in its entirety, due to the complex interaction of the algorithms that will operate on the data to derive distances, proper motions astrophysical properties and create the final three-dimensional model of the Galaxy.To estimate the processing power and complexity required to build and manage such a database the European Space Agency issued the Gaia Data Access and Analysis Study (GDAAS) contract. ... 2002, GDAAS. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O8-2.pdf -- 199.4 Кб -- 27.08.2004
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182. http://www.adass.org/adass/proceedings/adass03/reprints/O8-1.pdf
Astronomical Data Analysis Software and Systems XIII ASP Conference Series, Vol. 314, 2004 F. Ochsenbein, M. Al len, and D. Egret, eds. The ALMA Software System Joseph Schwarz, Heiko Sommer European Southern Observatory, Garching, Germany Allen Farris National Radio Astronomy Observatory, Socorro, NM Abstract. Prospective users, instrumentation and location of the Atacama Large Millimeter Array (ALMA) all present its software developers with ma jor challenges. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O8-1.pdf -- 302.9 Кб -- 27.08.2004
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183. http://www.adass.org/adass/proceedings/adass03/reprints/O7-6.pdf
... Early in the mission, the Chandra Data Archive started the development of a bibliography database, tracking publications in refereed journals and on-line conference proceedings that are based on Chandra observations, allowing our users to link directly to articles in the ADS from our archive, and to link to the relevant data in the archive from the ADS entries. ... Our services include cross-linking with the ADS, literature search from our archive, and metrics. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O7-6.pdf -- 69.7 Кб -- 27.08.2004
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184. http://www.adass.org/adass/proceedings/adass03/reprints/O7-5.pdf
... 314, 2004 F. Ochsenbein, M. Al len, and D. Egret, eds. AstroGrid: Initial Deployment of the UK's Virtual Observatory Nicholas A. Walton Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK Andrew Lawrence Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hil l, Edinburgh, EH9 3HJ, UK Tony Linde Department of Physics & Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, UK Abstract. ... 2004), Registry (Auden et al. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O7-5.pdf -- 72.1 Кб -- 27.08.2004
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185. http://www.adass.org/adass/proceedings/adass03/reprints/O7-4.pdf
Astronomical Data Analysis Software and Systems XIII ASP Conference Series, Vol. 314, 2004 F. Ochsenbein, M. Al len, and D. Egret, eds. eSTAR: Astronomers, Agents and when Rob otic Telescop es aren't... ... The eSTAR Pro ject1 uses intelligent agent technologies to carry out resource discovery, submit observation requests and analyse the reduced data returned from a network of robotic telescopes. ... We can view the system as a unified information grid, within which intelligent agents live. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O7-4.pdf -- 485.3 Кб -- 27.08.2004
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186. http://www.adass.org/adass/proceedings/adass03/reprints/O7-3.pdf
... 314, 2004 F. Ochsenbein, M. Al len, and D. Egret, eds. Montage : A Grid Enabled Image Mosaic Service for the National Virtual Observatory G. B. Berriman, J. C. Good, A. C. Laity Infrared Processing and Analysis Center, California Institute Of Technology, Pasadena, CA 91125 A. Bergou, J. Jacob, D. S. Katz Jet Propulsion Laboratory ... That architecture has been tested on 2MASS images computed on single processor Linux machines that hold all image data in memory. ... What Is Montage? ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O7-3.pdf -- 66.0 Кб -- 27.08.2004
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187. http://www.adass.org/adass/proceedings/adass03/reprints/O7-2.pdf
... 314, 2004 F. Ochsenbein, M. Al len, and D. Egret, eds. Compare: A Scaleable and Portable Catalog Cross-Comparison Engine for the NVO Serge Monkewitz, John Good Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA Abstract. We describe the architecture of a general cross-comparison engine capable of spatially matching sources in one astronomical source catalog with those in another. ... Data access and source list processing Figure 2. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O7-2.pdf -- 145.6 Кб -- 27.08.2004
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188. http://www.adass.org/adass/proceedings/adass03/reprints/O7-1.pdf
... 314, 2004 F. Ochsenbein, M. Al len, and D. Egret, eds. Resource Registries for the Virtual Observatory Raymond Plante National Center for Supercomputing Applications (NCSA), University of Il linois Urbana-Champaign, Urbana, IL 61801 Gretchen Greene ... Registries that contain high-level descriptions of resources such as archives and services are essential for making data discovery efficient in a distributed environment. ... The third type of registry is the local searchable registry. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O7-1.pdf -- 109.9 Кб -- 27.08.2004
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189. http://www.adass.org/adass/proceedings/adass03/reprints/O6-4.pdf
... 314, 2004 F. Ochsenbein, M. Al len, and D. Egret, eds. VO Access to Complex Data - MERLIN and Other Interferometry Archives A. M. S. Richards1 , S. T. Garrington, P. A. Harrison2, T. W. B. Muxlow, A. M. Stirling, P. Thomasson, N. Winstanley2 Jodrel l Bank Observatory, University of Manchester, SK11 9DL, UK. ... The next step for VOs and data providers is to supply final data products from any registered archive via a single interface. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O6-4.pdf -- 340.5 Кб -- 27.08.2004
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190. http://www.adass.org/adass/proceedings/adass03/reprints/O6-3.pdf
... Data Models exist in people's heads. Data modelling consists of making these explicit on paper, so that (a) we can discover if there is more than one important model, and (b) we can develop using the model which has the best impedance match with the targeted community. ... Data Models in the VO 2. ... The Simple Image Access (SIA) protocol implicitly uses this simple model at both the user and system ends, even though it uses in its responses the VOTable syntax. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O6-3.pdf -- 81.7 Кб -- 27.08.2004
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191. http://www.adass.org/adass/proceedings/adass03/reprints/O6-2.pdf
... 314, 2004 F. Ochsenbein, M. Al len, and D. Egret, eds. Astronomical Data Storage and Distribution in the next five years B. Pirenne1 European Southern Observatory, Data Management Division, Garching, Email: bpirenne@eso.org Abstract. ... S-DLT (Super Digital Linear Tape) technology can accommodate about 160GB of uncompressed data written at the rate of 16MB/s. The drive costs around 3.7KEUR and a tape is about 65 EUR. ... Cost comparisons between some possible data distribution technologies. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O6-2.pdf -- 117.2 Кб -- 27.08.2004
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192. http://www.adass.org/adass/proceedings/adass03/reprints/O5-3.pdf
... 314, 2004 F. Ochsenbein, M. Al len, and D. Egret, eds. End to End Simulation of the JWST/NIRSp ec Instrument X. Gnata, P. Ferruit, A. Pґcontal-Rousset, e CRAL Observatoire de Lyon 9, avenue Charles Andrґ 69561 e Saint-Genis-Laval cedex, Email: gnata@obs.univ-lyon1.fr Abstract. The near-infrared multi-ob ject spectrograph NIRSpec is one of the three science instruments onboard the future James Webb Space Telescope. ... NIRSpec (Near Infrared Spectrograph) is one of the 3 instruments onboard JWST. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O5-3.pdf -- 213.6 Кб -- 27.08.2004
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193. http://www.adass.org/adass/proceedings/adass03/reprints/O5-2.pdf
... Since the very first Tiger prototype operated at the CFHT (June 1987), the Centre de Recherche Astronomique de Lyon (CRAL) has been a very active player in the development of 3D spectrographs and their related softwares, including data acquisition, instrument numerical modelling, data reduction and analysis tools. The CRAL has recently joined the European RTN Euro3D to promote 3D spectrography in Europe, and develop softwares of common interest. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O5-2.pdf -- 1213.7 Кб -- 27.08.2004
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194. http://www.adass.org/adass/proceedings/adass03/reprints/O5-1.pdf
... By constructing instrument models which incorporate as full as possible a knowledge of optical and detector physics, the calibration of astronomical data can be placed on a firmer footing than is currently the norm. A number of developments make it more practical today to efficiently use optical models in the whole observational process: At first, the proposer can prepare observations using model based exposure time estimators and data simulators. ... 482 Ballester & Rosa archives. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O5-1.pdf -- 516.2 Кб -- 27.08.2004
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195. http://www.adass.org/adass/proceedings/adass03/reprints/O4-4.pdf
Astronomical Data Analysis Software and Systems XIII ASP Conference Series, Vol. ... To allow local analysis, a system was developed that gives users their own personal database (MYDB) at the portal site. ... Some long queries are returning data to a user over an Internet connection; frequently time is spent transferring the data, not extracting it, but a database resource is still tied up. ... We create a SQL Server database for the user dynamically the first time MYDB is used in a query. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O4-4.pdf -- 79.0 Кб -- 27.08.2004
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196. http://www.adass.org/adass/proceedings/adass03/reprints/O4-3a.pdf
Astronomical Data Analysis Software and Systems XIII ASP Conference Series, Vol. 314, 2004 F. Ochsenbein, M. Al len, and D. Egret, eds. Hyp eratlas: A New Framework for Image Federation R. D. Williams, S. G. Djorgovski, M. T. Feldmann, and J. C. Jacob California Institute of Technology, Pasadena, California Abstract. ... We hope for a distributed effort that will produce a multi-faceted image atlas of the sky, made by federating many different surveys at different wavelengths and different times. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O4-3a.pdf -- 95.9 Кб -- 27.08.2004
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197. http://www.adass.org/adass/proceedings/adass03/reprints/O4-1.pdf
... 314, 2004 F. Ochsenbein, M. Al len, and D. Egret, eds. The Europ ean Grid Infrastructure EGEE Pro ject Fabrizio Gagliardi 1 CERN IT Division, 1211 Geneva 23, Switzerland Abstract. ... Progress of DataGrid The EU DataGrid pro ject, the ma jor grid development European effort, will complete its activity at the beginning of 2004. ... As a rule, new communities will contribute The European Grid Infrastructure EGEE Pro ject 363 new resources to the Grid infrastructure. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O4-1.pdf -- 377.4 Кб -- 27.08.2004
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198. http://www.adass.org/adass/proceedings/adass03/reprints/O3-3.pdf
... Consistent uncertainties of background and sources are provided. The source probability is evaluated for single pixels as well as for pixel domains to enhance source detection of weak and extended sources. ... Method Given the observed data set D = {dij } N0 , where dij expresses photon counts in a pixel cell ij , two complementary hypotheses arise: Bij dij = bij + ij B ij dij = bij + sij + ij Hypothesis Bij specifies that dij consists only of background bij spoiled with noise ij . ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O3-3.pdf -- 301.2 Кб -- 27.08.2004
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199. http://www.adass.org/adass/proceedings/adass03/reprints/O3-2.pdf
... describe very recent algorithms based on computational geometry which have dramatically reduced the computational complexity of 1) kernel density estimation (which also extends to nonparametric regression, classification, and clustering), and 2) the npoint correlation function for arbitrary n. These new multi-tree methods typically yield orders of magnitude in speedup over the previous state of the art for similar accuracy, making millions of data ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O3-2.pdf -- 193.7 Кб -- 27.08.2004
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200. http://www.adass.org/adass/proceedings/adass03/reprints/O3-1.pdf
Astronomical Data Analysis Software and Systems XIII ASP Conference Series, Vol. ... Ho Essential Tasks and Methods in Automatic Pattern Recognition The process of automatic pattern recognition involves several key tasks: choice of a good feature representation, design of procedures for feature extraction, selection of relevant features for classification, and from there it can go into supervised or unsupervised learning (Jain et al. ... Features need to be informative of the task at hand. ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass03/reprints/O3-1.pdf -- 362.2 Кб -- 27.08.2004
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