Search (15 results, page 1 of 1)

  • × author_ss:"Leydesdorff, L."
  • × author_ss:"Bornmann, L."
  1. Leydesdorff, L.; Bornmann, L.; Wagner, C.S.: ¬The relative influences of government funding and international collaboration on citation impact (2019) 0.02 
    0.0205279 = product of:
  0.0410558 = sum of:
    0.0410558 = sum of:
      0.003609657 = weight(_text_:s in 4681) [ClassicSimilarity], result of:
        0.003609657 = score(doc=4681,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.072074346 = fieldWeight in 4681, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046875 = fieldNorm(doc=4681)
      0.03744614 = weight(_text_:22 in 4681) [ClassicSimilarity], result of:
        0.03744614 = score(doc=4681,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.23214069 = fieldWeight in 4681, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=4681)
  0.5 = coord(1/2)
    Date
    8. 1.2019 18:22:45
    Source
    Journal of the Association for Information Science and Technology. 70(2019) no.2, S.198-201
  2. Leydesdorff, L.; Bornmann, L.: How fractional counting of citations affects the impact factor : normalization in terms of differences in citation potentials among fields of science (2011) 0.02 
    0.017106583 = product of:
  0.034213167 = sum of:
    0.034213167 = sum of:
      0.0030080476 = weight(_text_:s in 4186) [ClassicSimilarity], result of:
        0.0030080476 = score(doc=4186,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.060061958 = fieldWeight in 4186, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.0390625 = fieldNorm(doc=4186)
      0.03120512 = weight(_text_:22 in 4186) [ClassicSimilarity], result of:
        0.03120512 = score(doc=4186,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.19345059 = fieldWeight in 4186, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0390625 = fieldNorm(doc=4186)
  0.5 = coord(1/2)
    Date
    22. 1.2011 12:51:07
    Source
    Journal of the American Society for Information Science and Technology. 62(2011) no.2, S.217-229
  3. Bornmann, L.; Leydesdorff, L.: Statistical tests and research assessments : a comment on Schneider (2012) (2013) 0.00 
    0.0018048285 = product of:
  0.003609657 = sum of:
    0.003609657 = product of:
      0.007219314 = sum of:
        0.007219314 = weight(_text_:s in 752) [ClassicSimilarity], result of:
          0.007219314 = score(doc=752,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.14414869 = fieldWeight in 752, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.09375 = fieldNorm(doc=752)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Journal of the American Society for Information Science and Technology. 64(2013) no.6, S.1306-1308
  4. Leydesdorff, L.; Wagner, C,; Bornmann, L.: Replicability and the public/private divide (2016) 0.00 
    0.0018048285 = product of:
  0.003609657 = sum of:
    0.003609657 = product of:
      0.007219314 = sum of:
        0.007219314 = weight(_text_:s in 3023) [ClassicSimilarity], result of:
          0.007219314 = score(doc=3023,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.14414869 = fieldWeight in 3023, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.09375 = fieldNorm(doc=3023)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Journal of the Association for Information Science and Technology. 67(2016) no.7, S.1777-1778
  5. Marx, W.; Bornmann, L.; Barth, A.; Leydesdorff, L.: Detecting the historical roots of research fields by reference publication year spectroscopy (RPYS) (2014) 0.00 
    0.0010528166 = product of:
  0.0021056333 = sum of:
    0.0021056333 = product of:
      0.0042112665 = sum of:
        0.0042112665 = weight(_text_:s in 1238) [ClassicSimilarity], result of:
          0.0042112665 = score(doc=1238,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.08408674 = fieldWeight in 1238, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.0546875 = fieldNorm(doc=1238)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Journal of the Association for Information Science and Technology. 65(2014) no.4, S.751-764
  6. Leydesdorff, L.; Bornmann, L.; Mutz, R.; Opthof, T.: Turning the tables on citation analysis one more time : principles for comparing sets of documents (2011) 0.00 
    9.0241426E-4 = product of:
  0.0018048285 = sum of:
    0.0018048285 = product of:
      0.003609657 = sum of:
        0.003609657 = weight(_text_:s in 4485) [ClassicSimilarity], result of:
          0.003609657 = score(doc=4485,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.072074346 = fieldWeight in 4485, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046875 = fieldNorm(doc=4485)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Journal of the American Society for Information Science and Technology. 62(2011) no.7, S.1370-1381
  7. Bornmann, L.; Leydesdorff, L.: Which cities produce more excellent papers than can be expected? : a new mapping approach, using Google Maps, based on statistical significance testing (2011) 0.00 
    9.0241426E-4 = product of:
  0.0018048285 = sum of:
    0.0018048285 = product of:
      0.003609657 = sum of:
        0.003609657 = weight(_text_:s in 4767) [ClassicSimilarity], result of:
          0.003609657 = score(doc=4767,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.072074346 = fieldWeight in 4767, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046875 = fieldNorm(doc=4767)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Journal of the American Society for Information Science and Technology. 62(2011) no.10, S.1954-1962
  8. Leydesdorff, L.; Bornmann, L.: Mapping (USPTO) patent data using overlays to Google Maps (2012) 0.00 
    9.0241426E-4 = product of:
  0.0018048285 = sum of:
    0.0018048285 = product of:
      0.003609657 = sum of:
        0.003609657 = weight(_text_:s in 288) [ClassicSimilarity], result of:
          0.003609657 = score(doc=288,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.072074346 = fieldWeight in 288, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046875 = fieldNorm(doc=288)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Journal of the American Society for Information Science and Technology. 63(2012) no.7, S.1442-1458
  9. Leydesdorff, L.; Radicchi, F.; Bornmann, L.; Castellano, C.; Nooy, W. de: Field-normalized impact factors (IFs) : a comparison of rescaling and fractionally counted IFs (2013) 0.00 
    9.0241426E-4 = product of:
  0.0018048285 = sum of:
    0.0018048285 = product of:
      0.003609657 = sum of:
        0.003609657 = weight(_text_:s in 1108) [ClassicSimilarity], result of:
          0.003609657 = score(doc=1108,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.072074346 = fieldWeight in 1108, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046875 = fieldNorm(doc=1108)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Journal of the American Society for Information Science and Technology. 64(2013) no.11, S.2299-2309
  10. Leydesdorff, L.; Bornmann, L.: ¬The operationalization of "fields" as WoS subject categories (WCs) in evaluative bibliometrics : the cases of "library and information science" and "science & technology studies" (2016) 0.00 
    9.0241426E-4 = product of:
  0.0018048285 = sum of:
    0.0018048285 = product of:
      0.003609657 = sum of:
        0.003609657 = weight(_text_:s in 2779) [ClassicSimilarity], result of:
          0.003609657 = score(doc=2779,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.072074346 = fieldWeight in 2779, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046875 = fieldNorm(doc=2779)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Journal of the Association for Information Science and Technology. 67(2016) no.3, S.707-714
  11. Leydesdorff, L.; Bornmann, L.: Integrated impact indicators compared with impact factors : an alternative research design with policy implications (2011) 0.00 
    7.520119E-4 = product of:
  0.0015040238 = sum of:
    0.0015040238 = product of:
      0.0030080476 = sum of:
        0.0030080476 = weight(_text_:s in 4919) [ClassicSimilarity], result of:
          0.0030080476 = score(doc=4919,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.060061958 = fieldWeight in 4919, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4919)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Journal of the American Society for Information Science and Technology. 62(2011) no.11, S.2133-2146
  12. Leydesdorff, L.; Zhou, P.; Bornmann, L.: How can journal impact factors be normalized across fields of science? : An assessment in terms of percentile ranks and fractional counts (2013) 0.00 
    7.520119E-4 = product of:
  0.0015040238 = sum of:
    0.0015040238 = product of:
      0.0030080476 = sum of:
        0.0030080476 = weight(_text_:s in 532) [ClassicSimilarity], result of:
          0.0030080476 = score(doc=532,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.060061958 = fieldWeight in 532, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.0390625 = fieldNorm(doc=532)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Journal of the American Society for Information Science and Technology. 64(2013) no.1, S.96-107
  13. Bornmann, L.; Wagner, C.; Leydesdorff, L.: BRICS countries and scientific excellence : a bibliometric analysis of most frequently cited papers (2015) 0.00 
    7.520119E-4 = product of:
  0.0015040238 = sum of:
    0.0015040238 = product of:
      0.0030080476 = sum of:
        0.0030080476 = weight(_text_:s in 2047) [ClassicSimilarity], result of:
          0.0030080476 = score(doc=2047,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.060061958 = fieldWeight in 2047, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2047)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Journal of the Association for Information Science and Technology. 66(2015) no.7, S.1507-1513
  14. Bauer, J.; Leydesdorff, L.; Bornmann, L.: Highly cited papers in Library and Information Science (LIS) : authors, institutions, and network structures (2016) 0.00 
    7.520119E-4 = product of:
  0.0015040238 = sum of:
    0.0015040238 = product of:
      0.0030080476 = sum of:
        0.0030080476 = weight(_text_:s in 3231) [ClassicSimilarity], result of:
          0.0030080476 = score(doc=3231,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.060061958 = fieldWeight in 3231, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3231)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Journal of the Association for Information Science and Technology. 67(2016) no.12, S.3095-3100
  15. Leydesdorff, L.; Bornmann, L.; Mingers, J.: Statistical significance and effect sizes of differences among research universities at the level of nations and worldwide based on the Leiden rankings (2019) 0.00 
    7.520119E-4 = product of:
  0.0015040238 = sum of:
    0.0015040238 = product of:
      0.0030080476 = sum of:
        0.0030080476 = weight(_text_:s in 5225) [ClassicSimilarity], result of:
          0.0030080476 = score(doc=5225,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.060061958 = fieldWeight in 5225, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5225)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Journal of the Association for Information Science and Technology. 70(2019) no.5, S.509-525

Authors