From: Greg Youngen <[email protected]> The message previously posted contained data from ISI's Web of Science. This data should not have been included because the search system operates differently from SciSearch available on Dialog. The trends identified don't change, and a single source for the data lessens the confusion.
Please disregard the previous posting and use this one instead. Greg Youngen Here are the numbers supporting my observations of citations to the xxx eprints. I originally ran the search in April and have updated it with another search Sept. 21 (including 1998 citation data). The process involves isolating the physics & astronomy literature, counting the total number of citations in this group, and from that extracting the citations to the eprints. The numbers have remained pretty consistent over the time period. Of course the percentage of eprints will diminish in time as more and more articles are published citing the print literature. However, citations to eprints do represent a significant number of the total citations to the most current literature. My article describing the growing trend of citations to eprints has been published in the journal, "College and Research Libraries," Vol. 59(5) September 1998. An earlier version of the paper can be found at: http://www.physics.uiuc.edu/Physics/library/preprint.html Citations in the Physics & Astronomy Literature Source: Science Citation Index using KR Dialog Citations to (April 1998) (September 1998) articles published in: 1995 1996 1997 1995 1996 1997 1998 Physics 143114 84408 28381 168301 110386 51093 7837 Astronomy 20784 13401 5946 24318 17011 9177 2337 Total 163898 97809 34327 192619 127397 60270 10174 Citations to Eprints 3328 4351 2161 3585 5301 4395 443 2% 4% 6% 2% 4% 7% 4% DIALOG 9/21/98 - Citations to: 1995 1996 1997 1998 Total astro-ph 282 491 439 47 1259 cond-mat 300 587 769 88 1744 gr-qc 240 343 210 27 820 hep-ex 28 56 128 10 222 hep-lat 178 286 257 18i 739 hep-ph 843 1307 1095 81 3326 hep-th 1625 1902 1144 129 4800 nucl-ex 10 6 18 1 35 nucl-th 79 157 186 14 436 quant-ph 166 149 28 343 Total 3585 5301 4395 443 13724 ----------------------------------------------------------------------- Greg Youngen Physics/Astronomy Library Phone: 217-244-2096 University of Illinois at Urbana-Champaign Fax: 217-333-3207 Urbana, IL 61801 [email protected]
