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| About NTRS | News | Feedback | Help | Weekly Updates | Simple Search | Advanced Search | Browse |
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| About NTRS | News | Feedback | Help | Weekly Updates | Simple Search | Advanced Search | Browse |
The NASA Scientific and Technical Information (STI) Program's mission is to collect, archive, and disseminate NASA aerospace information, and locate domestic and international STI pertinent to NASA's missions and Strategic Enterprises. Examples of NASA's STI include research reports, journal articles, conference and meeting papers, technical videos, mission-related operational documents, and preliminary data. NASA's technical information is available via the NASA Technical Report Server (NTRS) is to provide students, educators, and the public access to NASA's technical literature. NTRS also collects scientific and technical information from sites external to NASA to broaden the scope of information available to users. NTRS's Simple Search searches for NASA information only and its Advanced Search can search for NASA and non-NASA information. Most of the NASA information does not have full-text document images and documents can be ordered by contacting the NASA Center for AeroSpace Information.
The NTRS collects scientific and technical information from NASA's technical report servers and non-NASA sites using the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH). Information Disclaimer: The external sites selected for inclusion in the NTRS are not endorsed or maintained by NASA. The validity, accuracy, integrity, and maintenance of information from external sources are the responsibility of the sponsoring organization. Any questions regarding the information found in non-NASA resources should be referred to the appropriate institutional sponsors.
| Archive | Maintained by NASA |
Last Harvest |
Last Update |
Records in NTRS |
|---|---|---|---|---|
| Aeronautical Research Council (UK) | no | 2004-09-10 | 2004-10-09 | 2647 |
| arXiv Physics Eprint Server | no | 2004-04-23 | 2004-10-10 | 272266 |
| BioMed Central | no | 2003-11-22 | 2004-10-09 | 18454 |
| Energy Citation Database (OSTI) | no | 2003-07-04 | 2004-10-09 | 20738 |
| GENESIS (NASA Jet Propulsion Laboratory) | yes | 2004-09-10 | 2004-10-09 | 32 |
| NASA Ames Research Center | yes | n/a | 2004-10-09 | 354 |
| NASA Center for AeroSpace Information (CASI) | yes | n/a | 2004-10-09 | 489414 |
| NASA Dryden Flight Research Center | yes | n/a | 2004-10-12 | 351 |
| NASA Goddard Space Flight Center | yes | n/a | 2004-10-09 | 11 |
| NASA Jet Propulsion Laboratory | yes | 2004-09-10 | 2004-10-10 | 19123 |
| NASA Johnson Space Center | yes | 2004-09-10 | 2004-10-09 | 129 |
| NASA Kennedy Space Center | yes | n/a | 2004-10-09 | 82 |
| NASA Langley Research Center | yes | 2004-08-06 | 2004-10-09 | 4352 |
| NASA Marshall Space Flight Center | yes | 2004-09-10 | 2004-10-09 | 538 |
| NASA Stennis Space Center | yes | n/a | 2004-10-09 | 39 |
| National Advisory Committee for Aeronautics (NACA) | yes | 2004-09-10 | 2004-10-09 | 7640 |
| RIACS (NASA Ames Research Center) | yes | 2004-07-02 | 2004-10-09 | 61 |
| total | 836231 | |||
Some archives in the previous version of NTRS that have not yet been included in this version of NTRS:
- NASA Astrophysics Data System: Astronomy & Astrophysics, Physics & Geophysics, Space Instrumentation
- NASA Dryden Flight Research Center
- NASA Glenn Research Center
The NTRS has been in service since 1994. The architecture of NTRS has changed throughout the years, moving from distributed searching to metadata harvesting with the OAI-PMH. Some papers about NTRS and constituent digital libraries are included below.
- Michael L. Nelson, JoAnne Rocker and Terry L. Harrison, OAI and NASA Scientific and Technical Information, Library Hi-Tech, 21(2), 2003, pp. 140-150.
- Michael L. Nelson, A Digital Library for the National Advisory Committee for Aeronautics, NASA/TM-1999-209127, April 1999.
- Michael L. Nelson and Ming-Hokng Maa, Optimizing the NASA Technical Report Server, Internet Research: Electronic Network Applications and Policy, 6(1), August 1996, pp. 64-70.
- Michael L. Nelson, Gretchen L. Gottlich, David J. Bianco, Sharon S. Paulson, Robert L. Binkley, Yvonne D. Kellogg, Chris J. Beaumont, Robert B. Schmunk, Michael J. Kurtz, Alberto Accomazzi and Omar Syed, The NASA Technical Report Server, Internet Research: Electronic Network Applications and Policy, 5(2), September 1995, pp. 25-36.
- Michael L. Nelson, Gretchen L. Gottlich, David J. Bianco, Robert L. Binkley, Yvonne D. Kellogg, Sharon S. Paulson, Chris J. Beaumont, Robert B. Schmunk, Michael J. Kurtz and Alberto Accomazzi, The Widest Practicable Dissemination: The NASA Technical Report Server, Computers in Aerospace 10, AIAA-95-0964, San Antonio TX, March 28-30, 1995.
- Donna G. Roper, Mary K. McCaskill, Scott D. Holland, Joanne L. Walsh, Michael L. Nelson, Susan L. Adkins, Manjula Y. Ambur and Bryan A. Campbell, A Strategy for Electronic Dissemination of NASA Langley Technical Publications, NASA TM-109172, December 1994.
- Michael L. Nelson, Gretchen L. Gottlich and David J. Bianco, World Wide Web Implementation of the Langley Technical Report Server, NASA TM-109162, September 1994.
- Michael L. Nelson and Gretchen L. Gottlich , Electronic Document Distribution: Design of the Anonymous FTP Langley Technical Report Server, NASA TM-4567, March 1994.
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Sponsored by the NASA Scientific and Technical Information Program Office Responsible NASA Official and Curator: Calvin E. Mackey Viewers: Adobe Acrobat (PDF), PostScript, MS Office, Compression Privacy & Copyright, Ordering NASA Information, NASA STI Help Desk Last Updated: Fri. Jan. 23 13:03:34 EDT 2004 |