About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 64. Chapters: Ambling Audio Books, Analytical Sciences Digital Library, Anemi, The Digital Library of Modern Greek Studies, AnimalBase, Archive of European Integration, ArXiv, Astrophysics Data System, Avalon Project, Baldwin Library of Historical Children's Literature, Biodiversity Heritage Library, Biodiversity Heritage Library for Europe, Central and Eastern European Online Library, Chinese Text Project, Choral Public Domain Library, Christian Classics Ethereal Library, Collection of Computer Science Bibliographies, Community informatics, Core Historical Literature of Agriculture, Corpus Coranicum, Cylinder Preservation and Digitization Project, David Rumsey Historical Map Collection, Digital Accounting Collection, Digital Archive Project, Disciplinary repository, Dryad (repository), EconBiz - Virtual Library for Economics and Business Studies, EGranary Digital Libraries, EGranary Digital Library, Electronic Colloquium on Computational Complexity, EServer.org, EuroDocs: Online Sources for European History, FT Press, GEO-LEO, Infoshop.org, International Children's Digital Library, International Farming Systems Collection, International Music Score Library Project, Internet History Sourcebooks Project, Internet library sub-saharan Africa (ilissAfrica), Internet Sacred Text Archive, JournalServer, Judaica Archival Project, Judaic Digital Library, LacusCurtius, LANL Research Library, Library of Economics and Liberty, LibriVox, Literary Kicks, Live Music Archive, Marxists Internet Archive, Moby Project, Multinational Publications Electronic Library, Musopen, Mutopia Project, National Center for Biotechnology Information, National Geospatial Digital Archive, National Science Digital Library, Nizkor Project, Online Bible, On This Day, Open Humanities Press, Ovation Press, Oxford Text Archive, Parker Library on the Web, Perseus Project, Polishing of Metal, Project Canterbury, Project Rastko, Rare Book Room, Roman de la Rose Digital Library, Rubicon Foundation, ScientificCommons, Social informatics, Social Science Open Access Repository, SwordSearcher, Textfiles.com, Text Creation Partnership, The Complete Works of Charles Darwin Online, The Engineering Pathway, The Map Library, The Matheson Trust, The SWORD Project, TOSEC, Werner Icking Music Archive. Excerpt: The Astrophysics Data System (usually referred to as ADS), developed by the National Aeronautics and Space Administration (NASA), is an online database of over eight million astronomy and physics papers from both peer reviewed and non-peer reviewed sources. Abstracts are available free online for almost all articles, and full scanned articles are available in Graphics Interchange Format (GIF) and Portable Document Format (PDF) for older articles. New articles have links to electronic versions hosted at the journal's webpage, but these are typically available only by subscription (which most astronomy research facilities have). It is managed by the Harvard-Smithsonian Center for Astrophysics. ADS is a powerful research tool and has had a significant impact on the efficiency of astronomical research since it was launched in 1992. Literature searches that previously would have taken days or weeks can now be carried out in seconds via the ADS search engine, custom-built for astronomical needs. Studies have found that the benefit to astronomy of the ADS is equivalent to several hundred million US dollars annually, and the system is estimated to have tripled the readership of astronomical journals. Use of ADS is almost universal among astronomers worldwide, and therefore ADS usage statistics can be used to analyze global trends in astronomical research. These studies have revealed that the amount of research an astronomer carries out is related to the per capita gross domestic product (GDP) of the country in which he/she is based, and...
