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1. Introduction

   The state of a physical system is the mathematical description of our knowledge of it, and provides information on its future and past. A state...

   Matteo G.A. Paris, Jaroslav Řeháček in Quantum State Estimation

   Chapter
   

2. 2 Quantum Tomographic Methods

   The state of a physical system is the mathematical object that provides a complete information on the system. The knowledge of the state is...

   Giacomo Mauro D’Ariano, Matteo G.A. Paris, Massimiliano F. Sacchi in Quantum State Estimation

   Chapter
   

3. 9 Quantum Operations on Qubitsand Their Characterization

   Information encoded in quantum system has to obey rules of quantum physics which impose strict bounds on state estimation and on possible...

   Francesco De Martini, Marco Ricci, Fabio Sciarrino in Quantum State Estimation

   Chapter
   

4. 8 Characterization of Quantum Devices

   Using quantum tomography and a single entangled state it is possible to characterize completely a quantum device, a channel, or a measuring...

   Giacomo Mauro D’Ariano, Paoloplacido Lo Presti in Quantum State Estimation

   Chapter
   

5. VO Activities at the Harvard-Smithsonian CfA

   This paper summarizes the VO activities at the Harvard-Smithsonian Center for Astrophysics (CfA). Cfa has expertise covering virtually all branches...

   Giuseppina Fabbiano in Toward an International Virtual Observatory

   Conference paper
   

6. A C + + Parser for VOTables

   This paper provides a brief description of C + + Parser for VOTables. The parser is developed by Persistent Systems in association with IUCAA as part...

   Ajit Kembhavi, Hrishikesh Hegde, ... T. M. Vijayaraman in Toward an International Virtual Observatory

   Conference paper
   

7. Automatic Detection-Extraction-Classification for a Large Number of Stellar Spectra from Slitless Wide Field Spectroscopy. A Project for AVO

   The distribution of spectral types in extended stellar systems in galaxies can be a powerful mine of information regarding:...

   E. Kontizas, I. Bellas-Velidis, ... R. Smareglia in Toward an International Virtual Observatory

   Conference paper
   

8. UCDs: Metadata for the VO

   ...

   Sébastien Derriere, Thomas Boch, ... Patricio F. Ortiz in Toward an International Virtual Observatory

   Conference paper
   

9. The Astronomical Data Warehouse

   The idea of the astronomical data warehouse has arisen as the natural extension of current trends in astronomical data archives, and from an analysis...

   Clive G. Page in Toward an International Virtual Observatory

   Conference paper
   

10. Building the Infrastructure for the National Virtual Observatory: An Information Technology Research Initiative of the National Science Foundation

    The U.S. National Science Foundation is sponsoring the development of the infrastructure for the National Virtual Observatory via its Information...

    Robert J. Hanisch in Toward an International Virtual Observatory

    Conference paper
    

11. Information Hub of the Russian Virtual Observatory

    The ultimate goal of the Russian Virtual Observatory (RVO) initiative is to provide every astronomer with on-line access to the rich volumes of data...

    Oleg Malkov, Olga Dluzhnevskaya, ... Dana Kovaleva in Toward an International Virtual Observatory

    Conference paper
    

12. Building Interoperable NASA Archives

    Over the past decades NASA has developed an extensive set of archives for space astronomy data. These archives are organized along mission,...

    Thomas McGlynn, Alberto Accomazzi, ... Brian Thomas in Toward an International Virtual Observatory

    Conference paper
    

13. Using XML-Schema to Model Data from Present and Future Astronomical Databases

    XML (eXtensible Markup Language) has now become an almost inescapable tool for the exchange of formatted data over the World Wide Web and is now...

    Bernard Debray in Toward an International Virtual Observatory

    Conference paper
    

14. Wide-Field X-Ray Monitoring as a Data Source for the Virtual Observatory

    We refer on novel X-ray telescopes with high sensitivity as well as large field of view of order of 1 000 square degrees or even more. The results...

    René Hudec, Adolf Inneman, Ladislav Pina in Toward an International Virtual Observatory

    Conference paper
    

15. Laplacean Ideology for Preliminary Orbit Determination and Moving Celestial Body Identification in Virtual Epoch

    Any CCD frames with stars or galaxies or clusters and other images must be studied for a searching of moving celestial objects, namely asteroids,...

    O. P. Bykov in Toward an International Virtual Observatory

    Conference paper
    

16. HyperLeda: Virtual Instruments for Extragalactic Astronomy

    HyperLeda offers a series of tools of interest for Galactic and extra-galactic astronomy. The most prominent service is the LEDA catalogue which...

    Philippe Prugniel, Georges Paturel, ... Chantal Petit in Toward an International Virtual Observatory

    Conference paper
    

17. A Practical Approach to Catalogued-Data Visualisation

    Catalogued data is one of the ways information will be collected from VO. The selected material will contain many physical quantities (columns) and...

    Patricio F. Ortiz, Joachim Köppen in Toward an International Virtual Observatory

    Conference paper
    

18. Development of a Multi-Mission Data Server at LAEFF

    Astronomical archives have been built independently of each other showing a variety of access levels and policies. This has caused that their remote...

    Enrique Solano, Raúl Gutiérrez, ... Jesús García in Toward an International Virtual Observatory

    Conference paper
    

19. e-Science and the Grid

    Many areas of science involve access to distributed computing and data resources, specialized and expensive instruments for world-wide collaborations...

    Marcel Kunze in Toward an International Virtual Observatory

    Conference paper
    

20. The Hamburg/RASS Catalogue of Optical Identifications of ROSAT Bright Source X-Ray Sources

    We used digitized Schmidt direct and prism plates taken for the northern hemisphere Hamburg Quasar Survey (HQS) to obtain optical identifications for...

    F.-J. Zickgraf, D. Engels, ... W. Voges in Toward an International Virtual Observatory

    Conference paper