Document (#33377)

Author
Barnett, G.A.
Fink, E.L.
Title
Impact of the internet and scholar age distribution on academic citation age
Source
Journal of the American Society for Information Science and Technology. 59(2008) no.4, S.526-534
Year
2008
Abstract
This article examines the impact of the Internet and the age distribution of research scholars on academic citation age with a mathematical model proposed by Barnett, Fink, and Debus (1989) and a revised model that incorporates information about the online environment and scholar age distribution. The modified model fits the data well, accounting for 99.6% of the variance for science citations and 99.8% for social science citations. The Internet's impact on the aging process of academic citations has been very small, accounting for only 0.1% for the social sciences and 0.8% for the sciences. Rather than resulting in the use of more recent citations, the Internet appears to have lengthened the average life of academic citations by 6 to 8 months. The aging of scholars seems to have a greater impact, accounting for 2.8% of the variance for the sciences and 0.9% for the social sciences. However, because the diffusion of the Internet and the aging of the professoriate are correlated over this time period, differentiating their effects is somewhat problematic.
Theme
Informetrie
Citation indexing
Internet

Similar documents (author)

  1. Barnett, J.: OCLC cataloging peer committees : an overview (1993) 5.87 
    5.871439 = sum of:
  5.871439 = weight(author_txt:barnett in 5988) [ClassicSimilarity], result of:
    5.871439 = fieldWeight in 5988, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      9.394302 = idf(docFreq=9, maxDocs=44218)
      0.625 = fieldNorm(doc=5988)
  2. Barnett, J.B.: Technical report cataloging for OCLC (1988) 5.87 
    5.871439 = sum of:
  5.871439 = weight(author_txt:barnett in 396) [ClassicSimilarity], result of:
    5.871439 = fieldWeight in 396, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      9.394302 = idf(docFreq=9, maxDocs=44218)
      0.625 = fieldNorm(doc=396)
  3. Barnett, J.B.: Use study of OCLC cataloging in the marine sciences (1989) 5.87 
    5.871439 = sum of:
  5.871439 = weight(author_txt:barnett in 447) [ClassicSimilarity], result of:
    5.871439 = fieldWeight in 447, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      9.394302 = idf(docFreq=9, maxDocs=44218)
      0.625 = fieldNorm(doc=447)
  4. Petersen, T.; Barnett, P.J.: Guide to indexing and cataloguing with the Art & Architecture Thesaurus (1994) 4.70 
    4.697151 = sum of:
  4.697151 = weight(author_txt:barnett in 1648) [ClassicSimilarity], result of:
    4.697151 = fieldWeight in 1648, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      9.394302 = idf(docFreq=9, maxDocs=44218)
      0.5 = fieldNorm(doc=1648)
  5. Quinlan, C.A.; Moores, G.F.; Barnett, L.G.: Providing access to the library collection: one library's experience : pt.3: generating the on-line public access catalogue (1990) 3.52 
    3.5228634 = sum of:
  3.5228634 = weight(author_txt:barnett in 3318) [ClassicSimilarity], result of:
    3.5228634 = fieldWeight in 3318, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      9.394302 = idf(docFreq=9, maxDocs=44218)
      0.375 = fieldNorm(doc=3318)

Similar documents (content)

  1. Kousha, K.; Thelwall, M.: Google Scholar citations and Google Web/URL citations : a multi-discipline exploratory analysis (2007) 0.27 
    0.26708984 = sum of:
  0.26708984 = product of:
    0.83465576 = sum of:
      0.050479837 = weight(abstract_txt:correlated in 337) [ClassicSimilarity], result of:
        0.050479837 = score(doc=337,freq=1.0), product of:
          0.11222296 = queryWeight, product of:
            1.0502542 = boost
            7.1970778 = idf(docFreq=89, maxDocs=44218)
            0.01484674 = queryNorm
          0.44981736 = fieldWeight in 337, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.1970778 = idf(docFreq=89, maxDocs=44218)
            0.0625 = fieldNorm(doc=337)
      0.022042675 = weight(abstract_txt:science in 337) [ClassicSimilarity], result of:
        0.022042675 = score(doc=337,freq=2.0), product of:
          0.064592086 = queryWeight, product of:
            1.1268295 = boost
            3.8609126 = idf(docFreq=2529, maxDocs=44218)
            0.01484674 = queryNorm
          0.3412597 = fieldWeight in 337, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.8609126 = idf(docFreq=2529, maxDocs=44218)
            0.0625 = fieldNorm(doc=337)
      0.07788792 = weight(abstract_txt:citation in 337) [ClassicSimilarity], result of:
        0.07788792 = score(doc=337,freq=6.0), product of:
          0.10389853 = queryWeight, product of:
            1.4291351 = boost
            4.896717 = idf(docFreq=897, maxDocs=44218)
            0.01484674 = queryNorm
          0.7496537 = fieldWeight in 337, product of:
            2.4494898 = tf(freq=6.0), with freq of:
              6.0 = termFreq=6.0
            4.896717 = idf(docFreq=897, maxDocs=44218)
            0.0625 = fieldNorm(doc=337)
      0.043100063 = weight(abstract_txt:social in 337) [ClassicSimilarity], result of:
        0.043100063 = score(doc=337,freq=2.0), product of:
          0.11561623 = queryWeight, product of:
            1.8463907 = boost
            4.2175875 = idf(docFreq=1770, maxDocs=44218)
            0.01484674 = queryNorm
          0.37278557 = fieldWeight in 337, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.2175875 = idf(docFreq=1770, maxDocs=44218)
            0.0625 = fieldNorm(doc=337)
      0.23807514 = weight(abstract_txt:scholar in 337) [ClassicSimilarity], result of:
        0.23807514 = score(doc=337,freq=7.0), product of:
          0.20786904 = queryWeight, product of:
            2.0214522 = boost
            6.926203 = idf(docFreq=117, maxDocs=44218)
            0.01484674 = queryNorm
          1.1453131 = fieldWeight in 337, product of:
            2.6457512 = tf(freq=7.0), with freq of:
              7.0 = termFreq=7.0
            6.926203 = idf(docFreq=117, maxDocs=44218)
            0.0625 = fieldNorm(doc=337)
      0.05230341 = weight(abstract_txt:impact in 337) [ClassicSimilarity], result of:
        0.05230341 = score(doc=337,freq=1.0), product of:
          0.18240768 = queryWeight, product of:
            2.6779664 = boost
            4.5878253 = idf(docFreq=1222, maxDocs=44218)
            0.01484674 = queryNorm
          0.28673908 = fieldWeight in 337, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.5878253 = idf(docFreq=1222, maxDocs=44218)
            0.0625 = fieldNorm(doc=337)
      0.0781458 = weight(abstract_txt:sciences in 337) [ClassicSimilarity], result of:
        0.0781458 = score(doc=337,freq=1.0), product of:
          0.23839302 = queryWeight, product of:
            3.0614724 = boost
            5.244838 = idf(docFreq=633, maxDocs=44218)
            0.01484674 = queryNorm
          0.3278024 = fieldWeight in 337, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.244838 = idf(docFreq=633, maxDocs=44218)
            0.0625 = fieldNorm(doc=337)
      0.2726209 = weight(abstract_txt:citations in 337) [ClassicSimilarity], result of:
        0.2726209 = score(doc=337,freq=7.0), product of:
          0.30879235 = queryWeight, product of:
            3.8955774 = boost
            5.339045 = idf(docFreq=576, maxDocs=44218)
            0.01484674 = queryNorm
          0.88286155 = fieldWeight in 337, product of:
            2.6457512 = tf(freq=7.0), with freq of:
              7.0 = termFreq=7.0
            5.339045 = idf(docFreq=576, maxDocs=44218)
            0.0625 = fieldNorm(doc=337)
    0.32 = coord(8/25)
  2. Peng, T.-Q.; Zhu, J.J.H.: Where you publish matters most : a multilevel analysis of factors affecting citations of internet studies (2012) 0.26 
    0.2593105 = sum of:
  0.2593105 = product of:
    0.8103454 = sum of:
      0.044968605 = weight(abstract_txt:citation in 386) [ClassicSimilarity], result of:
        0.044968605 = score(doc=386,freq=2.0), product of:
          0.10389853 = queryWeight, product of:
            1.4291351 = boost
            4.896717 = idf(docFreq=897, maxDocs=44218)
            0.01484674 = queryNorm
          0.43281272 = fieldWeight in 386, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.896717 = idf(docFreq=897, maxDocs=44218)
            0.0625 = fieldNorm(doc=386)
      0.02573114 = weight(abstract_txt:model in 386) [ClassicSimilarity], result of:
        0.02573114 = score(doc=386,freq=1.0), product of:
          0.10328 = queryWeight, product of:
            1.745108 = boost
            3.986234 = idf(docFreq=2231, maxDocs=44218)
            0.01484674 = queryNorm
          0.24913962 = fieldWeight in 386, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.986234 = idf(docFreq=2231, maxDocs=44218)
            0.0625 = fieldNorm(doc=386)
      0.05278658 = weight(abstract_txt:social in 386) [ClassicSimilarity], result of:
        0.05278658 = score(doc=386,freq=3.0), product of:
          0.11561623 = queryWeight, product of:
            1.8463907 = boost
            4.2175875 = idf(docFreq=1770, maxDocs=44218)
            0.01484674 = queryNorm
          0.45656723 = fieldWeight in 386, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            4.2175875 = idf(docFreq=1770, maxDocs=44218)
            0.0625 = fieldNorm(doc=386)
      0.06271 = weight(abstract_txt:internet in 386) [ClassicSimilarity], result of:
        0.06271 = score(doc=386,freq=5.0), product of:
          0.120390154 = queryWeight, product of:
            2.1756 = boost
            3.7271836 = idf(docFreq=2891, maxDocs=44218)
            0.01484674 = queryNorm
          0.52088976 = fieldWeight in 386, product of:
            2.236068 = tf(freq=5.0), with freq of:
              5.0 = termFreq=5.0
            3.7271836 = idf(docFreq=2891, maxDocs=44218)
            0.0625 = fieldNorm(doc=386)
      0.09059216 = weight(abstract_txt:impact in 386) [ClassicSimilarity], result of:
        0.09059216 = score(doc=386,freq=3.0), product of:
          0.18240768 = queryWeight, product of:
            2.6779664 = boost
            4.5878253 = idf(docFreq=1222, maxDocs=44218)
            0.01484674 = queryNorm
          0.49664664 = fieldWeight in 386, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            4.5878253 = idf(docFreq=1222, maxDocs=44218)
            0.0625 = fieldNorm(doc=386)
      0.0781458 = weight(abstract_txt:sciences in 386) [ClassicSimilarity], result of:
        0.0781458 = score(doc=386,freq=1.0), product of:
          0.23839302 = queryWeight, product of:
            3.0614724 = boost
            5.244838 = idf(docFreq=633, maxDocs=44218)
            0.01484674 = queryNorm
          0.3278024 = fieldWeight in 386, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.244838 = idf(docFreq=633, maxDocs=44218)
            0.0625 = fieldNorm(doc=386)
      0.20301318 = weight(abstract_txt:accounting in 386) [ClassicSimilarity], result of:
        0.20301318 = score(doc=386,freq=1.0), product of:
          0.4093169 = queryWeight, product of:
            3.4741137 = boost
            7.935687 = idf(docFreq=42, maxDocs=44218)
            0.01484674 = queryNorm
          0.49598044 = fieldWeight in 386, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.935687 = idf(docFreq=42, maxDocs=44218)
            0.0625 = fieldNorm(doc=386)
      0.25239792 = weight(abstract_txt:citations in 386) [ClassicSimilarity], result of:
        0.25239792 = score(doc=386,freq=6.0), product of:
          0.30879235 = queryWeight, product of:
            3.8955774 = boost
            5.339045 = idf(docFreq=576, maxDocs=44218)
            0.01484674 = queryNorm
          0.817371 = fieldWeight in 386, product of:
            2.4494898 = tf(freq=6.0), with freq of:
              6.0 = termFreq=6.0
            5.339045 = idf(docFreq=576, maxDocs=44218)
            0.0625 = fieldNorm(doc=386)
    0.32 = coord(8/25)
  3. Bensman, S.J.: Distributional differences of the impact factor in the sciences versus the social sciences : an analysis of the probabilistic structure of the 2005 journal citation reports (2008) 0.25 
    0.25014895 = sum of:
  0.25014895 = product of:
    0.8933891 = sum of:
      0.019483157 = weight(abstract_txt:science in 1953) [ClassicSimilarity], result of:
        0.019483157 = score(doc=1953,freq=1.0), product of:
          0.064592086 = queryWeight, product of:
            1.1268295 = boost
            3.8609126 = idf(docFreq=2529, maxDocs=44218)
            0.01484674 = queryNorm
          0.3016338 = fieldWeight in 1953, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.8609126 = idf(docFreq=2529, maxDocs=44218)
            0.078125 = fieldNorm(doc=1953)
      0.068843834 = weight(abstract_txt:citation in 1953) [ClassicSimilarity], result of:
        0.068843834 = score(doc=1953,freq=3.0), product of:
          0.10389853 = queryWeight, product of:
            1.4291351 = boost
            4.896717 = idf(docFreq=897, maxDocs=44218)
            0.01484674 = queryNorm
          0.6626064 = fieldWeight in 1953, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            4.896717 = idf(docFreq=897, maxDocs=44218)
            0.078125 = fieldNorm(doc=1953)
      0.053875078 = weight(abstract_txt:social in 1953) [ClassicSimilarity], result of:
        0.053875078 = score(doc=1953,freq=2.0), product of:
          0.11561623 = queryWeight, product of:
            1.8463907 = boost
            4.2175875 = idf(docFreq=1770, maxDocs=44218)
            0.01484674 = queryNorm
          0.46598196 = fieldWeight in 1953, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.2175875 = idf(docFreq=1770, maxDocs=44218)
            0.078125 = fieldNorm(doc=1953)
      0.23320515 = weight(abstract_txt:variance in 1953) [ClassicSimilarity], result of:
        0.23320515 = score(doc=1953,freq=2.0), product of:
          0.26825956 = queryWeight, product of:
            2.2963927 = boost
            7.8682456 = idf(docFreq=45, maxDocs=44218)
            0.01484674 = queryNorm
          0.86932653 = fieldWeight in 1953, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            7.8682456 = idf(docFreq=45, maxDocs=44218)
            0.078125 = fieldNorm(doc=1953)
      0.21803273 = weight(abstract_txt:distribution in 1953) [ClassicSimilarity], result of:
        0.21803273 = score(doc=1953,freq=6.0), product of:
          0.20357957 = queryWeight, product of:
            2.4500859 = boost
            5.596568 = idf(docFreq=445, maxDocs=44218)
            0.01484674 = queryNorm
          1.0709951 = fieldWeight in 1953, product of:
            2.4494898 = tf(freq=6.0), with freq of:
              6.0 = termFreq=6.0
            5.596568 = idf(docFreq=445, maxDocs=44218)
            0.078125 = fieldNorm(doc=1953)
      0.13075852 = weight(abstract_txt:impact in 1953) [ClassicSimilarity], result of:
        0.13075852 = score(doc=1953,freq=4.0), product of:
          0.18240768 = queryWeight, product of:
            2.6779664 = boost
            4.5878253 = idf(docFreq=1222, maxDocs=44218)
            0.01484674 = queryNorm
          0.7168477 = fieldWeight in 1953, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            4.5878253 = idf(docFreq=1222, maxDocs=44218)
            0.078125 = fieldNorm(doc=1953)
      0.16919063 = weight(abstract_txt:sciences in 1953) [ClassicSimilarity], result of:
        0.16919063 = score(doc=1953,freq=3.0), product of:
          0.23839302 = queryWeight, product of:
            3.0614724 = boost
            5.244838 = idf(docFreq=633, maxDocs=44218)
            0.01484674 = queryNorm
          0.709713 = fieldWeight in 1953, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            5.244838 = idf(docFreq=633, maxDocs=44218)
            0.078125 = fieldNorm(doc=1953)
    0.28 = coord(7/25)
  4. Järvelin, K.; Persson, O.: ¬The DCI index : discounted cumulated impact-based research evaluation (2008) 0.24 
    0.24323443 = sum of:
  0.24323443 = product of:
    0.86869437 = sum of:
      0.048709083 = weight(abstract_txt:incorporates in 2694) [ClassicSimilarity], result of:
        0.048709083 = score(doc=2694,freq=1.0), product of:
          0.109582976 = queryWeight, product of:
            1.0378274 = boost
            7.11192 = idf(docFreq=97, maxDocs=44218)
            0.01484674 = queryNorm
          0.444495 = fieldWeight in 2694, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.11192 = idf(docFreq=97, maxDocs=44218)
            0.0625 = fieldNorm(doc=2694)
      0.015586524 = weight(abstract_txt:science in 2694) [ClassicSimilarity], result of:
        0.015586524 = score(doc=2694,freq=1.0), product of:
          0.064592086 = queryWeight, product of:
            1.1268295 = boost
            3.8609126 = idf(docFreq=2529, maxDocs=44218)
            0.01484674 = queryNorm
          0.24130704 = fieldWeight in 2694, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.8609126 = idf(docFreq=2529, maxDocs=44218)
            0.0625 = fieldNorm(doc=2694)
      0.06359521 = weight(abstract_txt:citation in 2694) [ClassicSimilarity], result of:
        0.06359521 = score(doc=2694,freq=4.0), product of:
          0.10389853 = queryWeight, product of:
            1.4291351 = boost
            4.896717 = idf(docFreq=897, maxDocs=44218)
            0.01484674 = queryNorm
          0.61208963 = fieldWeight in 2694, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            4.896717 = idf(docFreq=897, maxDocs=44218)
            0.0625 = fieldNorm(doc=2694)
      0.12725651 = weight(abstract_txt:scholar in 2694) [ClassicSimilarity], result of:
        0.12725651 = score(doc=2694,freq=2.0), product of:
          0.20786904 = queryWeight, product of:
            2.0214522 = boost
            6.926203 = idf(docFreq=117, maxDocs=44218)
            0.01484674 = queryNorm
          0.6121956 = fieldWeight in 2694, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            6.926203 = idf(docFreq=117, maxDocs=44218)
            0.0625 = fieldNorm(doc=2694)
      0.05230341 = weight(abstract_txt:impact in 2694) [ClassicSimilarity], result of:
        0.05230341 = score(doc=2694,freq=1.0), product of:
          0.18240768 = queryWeight, product of:
            2.6779664 = boost
            4.5878253 = idf(docFreq=1222, maxDocs=44218)
            0.01484674 = queryNorm
          0.28673908 = fieldWeight in 2694, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.5878253 = idf(docFreq=1222, maxDocs=44218)
            0.0625 = fieldNorm(doc=2694)
      0.35516155 = weight(abstract_txt:aging in 2694) [ClassicSimilarity], result of:
        0.35516155 = score(doc=2694,freq=2.0), product of:
          0.47168365 = queryWeight, product of:
            3.7294056 = boost
            8.518833 = idf(docFreq=23, maxDocs=44218)
            0.01484674 = queryNorm
          0.75296557 = fieldWeight in 2694, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            8.518833 = idf(docFreq=23, maxDocs=44218)
            0.0625 = fieldNorm(doc=2694)
      0.20608203 = weight(abstract_txt:citations in 2694) [ClassicSimilarity], result of:
        0.20608203 = score(doc=2694,freq=4.0), product of:
          0.30879235 = queryWeight, product of:
            3.8955774 = boost
            5.339045 = idf(docFreq=576, maxDocs=44218)
            0.01484674 = queryNorm
          0.66738063 = fieldWeight in 2694, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            5.339045 = idf(docFreq=576, maxDocs=44218)
            0.0625 = fieldNorm(doc=2694)
    0.28 = coord(7/25)
  5. Simkin, M.V.; Roychowdhury, V.P.: ¬A mathematical theory of citing (2007) 0.21 
    0.20575316 = sum of:
  0.20575316 = product of:
    0.7348327 = sum of:
      0.04357472 = weight(abstract_txt:modified in 589) [ClassicSimilarity], result of:
        0.04357472 = score(doc=589,freq=1.0), product of:
          0.10174026 = queryWeight, product of:
            6.8527 = idf(docFreq=126, maxDocs=44218)
            0.01484674 = queryNorm
          0.42829376 = fieldWeight in 589, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.8527 = idf(docFreq=126, maxDocs=44218)
            0.0625 = fieldNorm(doc=589)
      0.015586524 = weight(abstract_txt:science in 589) [ClassicSimilarity], result of:
        0.015586524 = score(doc=589,freq=1.0), product of:
          0.064592086 = queryWeight, product of:
            1.1268295 = boost
            3.8609126 = idf(docFreq=2529, maxDocs=44218)
            0.01484674 = queryNorm
          0.24130704 = fieldWeight in 589, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.8609126 = idf(docFreq=2529, maxDocs=44218)
            0.0625 = fieldNorm(doc=589)
      0.044968605 = weight(abstract_txt:citation in 589) [ClassicSimilarity], result of:
        0.044968605 = score(doc=589,freq=2.0), product of:
          0.10389853 = queryWeight, product of:
            1.4291351 = boost
            4.896717 = idf(docFreq=897, maxDocs=44218)
            0.01484674 = queryNorm
          0.43281272 = fieldWeight in 589, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.896717 = idf(docFreq=897, maxDocs=44218)
            0.0625 = fieldNorm(doc=589)
      0.07277865 = weight(abstract_txt:model in 589) [ClassicSimilarity], result of:
        0.07277865 = score(doc=589,freq=8.0), product of:
          0.10328 = queryWeight, product of:
            1.745108 = boost
            3.986234 = idf(docFreq=2231, maxDocs=44218)
            0.01484674 = queryNorm
          0.70467323 = fieldWeight in 589, product of:
            2.828427 = tf(freq=8.0), with freq of:
              8.0 = termFreq=8.0
            3.986234 = idf(docFreq=2231, maxDocs=44218)
            0.0625 = fieldNorm(doc=589)
      0.100705 = weight(abstract_txt:distribution in 589) [ClassicSimilarity], result of:
        0.100705 = score(doc=589,freq=2.0), product of:
          0.20357957 = queryWeight, product of:
            2.4500859 = boost
            5.596568 = idf(docFreq=445, maxDocs=44218)
            0.01484674 = queryNorm
          0.4946714 = fieldWeight in 589, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.596568 = idf(docFreq=445, maxDocs=44218)
            0.0625 = fieldNorm(doc=589)
      0.25113714 = weight(abstract_txt:aging in 589) [ClassicSimilarity], result of:
        0.25113714 = score(doc=589,freq=1.0), product of:
          0.47168365 = queryWeight, product of:
            3.7294056 = boost
            8.518833 = idf(docFreq=23, maxDocs=44218)
            0.01484674 = queryNorm
          0.5324271 = fieldWeight in 589, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            8.518833 = idf(docFreq=23, maxDocs=44218)
            0.0625 = fieldNorm(doc=589)
      0.20608203 = weight(abstract_txt:citations in 589) [ClassicSimilarity], result of:
        0.20608203 = score(doc=589,freq=4.0), product of:
          0.30879235 = queryWeight, product of:
            3.8955774 = boost
            5.339045 = idf(docFreq=576, maxDocs=44218)
            0.01484674 = queryNorm
          0.66738063 = fieldWeight in 589, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            5.339045 = idf(docFreq=576, maxDocs=44218)
            0.0625 = fieldNorm(doc=589)
    0.28 = coord(7/25)