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1721. Search and Retrieval of the AXAF Data Archive on the Web using Java
... This paper presents a multi-tier architecture which integrates the data servers, Web server and a HTTP/JDBC gateway and enables data on any of the data servers in the AXAF archive to be available to clients using a Web browser. ... Access to datafiles is provided by existing client applications which send data ingest, search and retrieval requests in a 4gl language to an archive server (Zografou et al. ... Figure 2: Search Element . ... The Web server now behaves as the client to the archive server....
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Ссылки http://www.adass.org/adass/proceedings/adass97/charys.html -- 11.6 Кб -- 15.05.1998
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1722. Nightly Scheduling of ESO's Very Large Telescope
Next: VLT Data Quality Control . Up: Dataflow and Scheduling . ... A key challenge for ESO's Very Large Telescope (VLT) will be responding to changing observing conditions in order to maximize the scientific productivity of the observatory. For queued observations, the nightly scheduling will be performed by staff astronomers using an Operational Toolkit. ... The MTS, developed by ESO, will be used to create candidate lists of observations (queues) based on different scheduling criteria. ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/chavana.html -- 13.0 Кб -- 15.05.1998
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1723. Cyber Hype or Educational Technology? . What is being learned from all those
... This paper discusses various information technology methods being applied to science education and public information. ... This paper addresses instructional technology used in astrophysics-related public programs and will explore issues related to the clientele, resource design and budgetary issues. ... Information technology methods are being applied and evolved to provide exemplary materials for science education, curricula and general public information about research and technology. ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/christianc.html -- 27.0 Кб -- 15.05.1998
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1724. LINN?, a Software System for Automatic Classification
... N. Christlieb 1 and L. Wisotzki . ... We report on the software system L INN ?, which has been designed for the development and evaluation of classification models. ... A few years ago we started to develop methods for the systematic exploitation of the stellar content of the survey by means of automatic spectral classification. ... In this paper we report on the software system L INN ?, that has been designed for the development and evaluation of classification models. ... Class definitions . ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/christliebn.html -- 13.3 Кб -- 15.05.1998
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1725. Fitting and Modeling in the ASC Data Analysis Environment
Next: Index . Previous: Conference Photgraph . ... Table of Contents - Index . ... In particular Harry Payne at STScI made available his notes and some software. As before there was a skeleton L A T E X file giving the names of all the contributed papers as chapters which were automatically produced from the contributions submitted electronically by the authors who used the ASP conference style file. ... The conference photograph was supplied directly as a glossy print. ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/colophon.html -- 4.0 Кб -- 15.05.1998
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1726. Building Software from Heterogeneous Environments
Next: Data Analysis Applications . ... The past decade has witnessed a movement within the astronomical software community towards Open Systems . ... We present examples of user-customizable systems that can be built from existing tools, based on commonly-used infrastructure: a parameter interface library, FITS file format, Unix, and the X Windows environment. ... However, the currently available parameter file systems have serious limitations when inserted into a heterogeneous environment. ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/conroym.html -- 14.0 Кб -- 15.05.1998
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1727. ADASS VII Cover Page
... Table of Contents - Index . Cover Illustration: . This figure, pertaining to the paper by Markus Dolensky, Alberto Micol, Benoit Pirenne and Michael Rosa , shows the ``HST Jitter Ball" visualized by a Java applet. ... This information can be used to combine images in an optimal way and with minimum loss of resolution using the ``drizzling" technique described at the last ADASS and used for combining the images of the Hubble Deep Field. ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/cover.html -- 3.5 Кб -- 15.05.1998
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1728. VRML and Collaborative Environments: New Tools for Networked Visualization
... We present two new applications that engage the network as a tool for astronomical research and/or education. The first is a VRML server which allows users over the Web to interactively create three-dimensional visualizations of FITS images contained in the NCSA Astronomy Digital Image Library (ADIL). ... The VRML Server tool allows a user to interactively create 3D visualizations of astronomical images found in the ADIL. The visualizations are returned to the user as VRML files. ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/crutcherr.html -- 13.7 Кб -- 15.05.1998
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1729. Modelling Spectro-photometric Characteristics of Nonradially Pulsating Stars
Next: Identification and Analysis of Binary Star Systems using Probability Theory . ... We present a computing code for modelling energy flux distributions, photometric indices and spectral line profiles of (non-)radially pulsating Main-Sequence stars. ... In the case of slowly rotating stars one can use the zero-rotation approximation to describe stellar pulsations. Such a model was used already by Cugier, Dziembowski & Pamyatnykh (1994) to study nonadiabatic observables of Cephei stars. ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/daszynskaj.html -- 20.4 Кб -- 15.05.1998
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1730. Dataflow and Scheduling
... Nightly Scheduling of ESO's Very Large Telescope . ... VLT Data Quality Control . ... Achieving Stable Observing Schedules in an Unstable World . ... Data Analysis with ISOCAM Interactive Analysis System -- Preparing for the Future . ... The Interaction of the ISO-SWS Pipeline Software and the ISO-SWS Interactive Analysis System . ... Observing Control at the UKIRT . ... The STScI NICMOS Calibration Pipeline . ... Enhanced HST Pointing and Calibration Accuracy: Generating HST Jitter Files at ST-ECF ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/dataflow.html -- 6.8 Кб -- 15.05.1998
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1731. The Astrometric Properties of the NOAO Mosaic Imager
... Up: Data Analysis Applications . ... The astrometric properties of the NOAO Mosaic Imager are investigated using the new IRAF MSCRED and IMMATCHX packages and observations taken during recent engineering runs. ... The TAN projection plus cubic polynomial plate solutions and bilinear interpolation were used to combine the 8 pieces of the mosaic into a single 8K by 8K image with an undistorted TAN projection coordinate system. ... A new plate solution was computed for the combined images. ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/davisl.html -- 14.5 Кб -- 15.05.1998
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1732. On the Need for Input Data Control in Pipeline Reductions
Next: Pipeline Calibration for STIS . ... Previous: HST Paper Products: A New Way to Look at HST Data . ... This simplifies enormously the data reduction procedure and allows the user to interpret high-quality data correctly. ... This may result in confusion about basic instrumental parameters, the precision of the set-up, the amount and distribution of calibration frames which are required and finally the assumptions on which the data reduction procedure should rely. ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/decuyperjp.html -- 11.7 Кб -- 15.05.1998
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1733. Fitting and Modeling of AXAF Data with the ASC Fitting Application
... Up: Data Analysis Applications . ... Our main goals are: 1) to take advantage of the full capabilities of the AXAF, we intend to provide a more sophisticated modeling capability (i.e., models that are f ( x , y , E , t ), models to simulate the response of AXAF instruments, and models that enable ``joint-mode'' fitting, i.e., combined spatial-spectral or spectral-temporal fitting); and 2) to provide users with a wide variety of models, optimization methods, and fit statistics. ... Multiple data sets...
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Ссылки http://www.adass.org/adass/proceedings/adass97/does.html -- 12.1 Кб -- 15.05.1998
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1734. Enhanced HST Pointing and Calibration Accuracy: Generating HST Jitter Files at
Next: HST Paper Products: A New Way to Look at HST Data . ... After providing on-the-fly re-calibration of HST data to archive users, ST-ECF has embarked on a new project aiming at grouping, cosmic ray cleaning and drizzling images taken by most HST instruments. ... The production of the missing jitter files combined with the extraction of additional engineering parameters will greatly enhance the homogeneity and the scientific value of the entire archive. ... 1995, HST Data Handbook, STScI, 107 . ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/dolenskym1.html -- 9.4 Кб -- 15.05.1998
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1735. Browsing the HST Archive with Java-enriched Database Access
... Up: Archives and Information Services . Previous: Search and Retrieval of the AXAF Data Archive on the Web using Java . ... Our Web interface to the HST archive (WDB) was substantially augmented during the past few months: A seamless integration of Java applets and CGI interfaces to the database now allows basic manipulation and visualization of data. ... These applets only require a common Web browser and offer very helpful features to facilitate archive data selection. ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/dolenskym2.html -- 9.1 Кб -- 15.05.1998
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1736. The Future of Data Reduction at UKIRT
... Up: Data Analysis Applications . ... The Observatory Reduction and Acquisition Control (ORAC) project is a comprehensive re-implementation of all existing instrument user interfaces and data handling software involved at the United Kingdom Infrared Telescope (UKIRT). ... An algorithm engine : One or more generally available packages containing suitable algorithms for data reduction . ... A messaging system : An interface between the pipeline manager and the algorithm engine . ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/economouf.html -- 12.0 Кб -- 15.05.1998
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1737. Education and Public Outreach
... Previous: Data Analysis Applications . ... What is being learned from all those BITS? ... Using Java for Astronomy: The Virtual Radio Interferometer Example . N.P.F. McKay and D.J. McKay . Teaching Astronomy via the Internet . ... Astronomy On-Line - the World's Biggest Astronomy Event on the World-Wide-Web . R. Albrecht, R. West, C. Madsen and M. Naumann . ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/education.html -- 2.6 Кб -- 15.05.1998
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1738. Prototype of a Discovery Tool for Querying Heterogeneous Services
... Up: Archives and Information Services . ... The CDS has recently developed a tool for managing URLs in a context of distributed heterogeneous services (GLU, Uniform Link Generator: Fernique et al. ... This includes the development of a `URL dictionary' maintained by the data providers contributing to the system. ... But the user does not need to have an a priori knowledge of the existing services, or even of the information types corresponding to potential query results. ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/egretd1.html -- 14.9 Кб -- 15.05.1998
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1739. Information Mining in Astronomical Literature with Tetralogie
... It is shown that this approach allows one to qualify and visualize some major trends characterizing the current astronomical literature: multi-author collaborative work, the impact of observational projects and thematic maps of publishing authors. ... 1997). The latter functionalities (called data mining functionalities) result from data analysis, data evolution analysis and data correlation principles and allow one to discover a priori unknown knowledge or information (Shapiro et al. ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/egretd2.html -- 15.7 Кб -- 15.05.1998
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1740. New Capabilities of the ADS Abstract and Article Service
... The ADS abstract service at: http://adswww.harvard.edu has been updated considerably in the last year. New capabilities in the search engine include searching for multi-word phrases and searching for various logical combinations of search terms. ... The ADS is currently used by over 10,000 users per month, which retrieve over 4.5 million references and over 250,000 full article pages each month. ... Quick Updates: The quick updates allow us to quickly enter new data into the database. ...
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Ссылки http://www.adass.org/adass/proceedings/adass97/eichhorng.html -- 11.1 Кб -- 15.05.1998
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