Search (8 results, page 1 of 1)

  • × author_ss:"Leeuwen, T.N. van"
  • × theme_ss:"Informetrie"
  1. Leeuwen, T.N. van; Tatum, C.; Wouters, P.F: Exploring possibilities to use bibliometric data to monitor gold open access publishing at the national level (2018) 0.00 
    0.0045070197 = product of:
  0.0135210585 = sum of:
    0.0045123748 = weight(_text_:e in 4458) [ClassicSimilarity], result of:
      0.0045123748 = score(doc=4458,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.09528506 = fieldWeight in 4458, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.046875 = fieldNorm(doc=4458)
    0.009008683 = product of:
      0.027026048 = sum of:
        0.027026048 = weight(_text_:29 in 4458) [ClassicSimilarity], result of:
          0.027026048 = score(doc=4458,freq=2.0), product of:
            0.11589616 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.03294669 = queryNorm
            0.23319192 = fieldWeight in 4458, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.046875 = fieldNorm(doc=4458)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Date
    29. 9.2018 12:43:48
    Language
    e
  2. Costas, R.; Bordons, M.; Leeuwen, T.N. van; Raan, A.F.J. van: Scaling rules in the science system : Influence of field-specific citation characteristics on the impact of individual researchers (2009) 0.00 
    0.0037333388 = product of:
  0.011200016 = sum of:
    0.0037603125 = weight(_text_:e in 2759) [ClassicSimilarity], result of:
      0.0037603125 = score(doc=2759,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.07940422 = fieldWeight in 2759, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2759)
    0.0074397037 = product of:
      0.02231911 = sum of:
        0.02231911 = weight(_text_:22 in 2759) [ClassicSimilarity], result of:
          0.02231911 = score(doc=2759,freq=2.0), product of:
            0.1153737 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03294669 = queryNorm
            0.19345059 = fieldWeight in 2759, 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=2759)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Date
    22. 3.2009 19:02:48
    Language
    e
  3. Costas, R.; Leeuwen, T.N. van; Bordons, M.: ¬A bibliometric classificatory approach for the study and assessment of research performance at the individual level : the effects of age on productivity and impact (2010) 0.00 
    7.520625E-4 = product of:
  0.0045123748 = sum of:
    0.0045123748 = weight(_text_:e in 3700) [ClassicSimilarity], result of:
      0.0045123748 = score(doc=3700,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.09528506 = fieldWeight in 3700, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.046875 = fieldNorm(doc=3700)
  0.16666667 = coord(1/6)
    Language
    e
  4. Costas, R.; Leeuwen, T.N. van; Raan, A.F.J. van: Is scientific literature subject to a 'Sell-By-Date'? : a general methodology to analyze the 'durability' of scientific documents (2010) 0.00 
    6.2671874E-4 = product of:
  0.0037603125 = sum of:
    0.0037603125 = weight(_text_:e in 3333) [ClassicSimilarity], result of:
      0.0037603125 = score(doc=3333,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.07940422 = fieldWeight in 3333, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3333)
  0.16666667 = coord(1/6)
    Language
    e
  5. Costas, R.; Leeuwen, T.N. van: Approaching the "reward triangle" : general analysis of the presence of funding acknowledgments and "peer interactive communication" in scientific publications (2012) 0.00 
    6.2671874E-4 = product of:
  0.0037603125 = sum of:
    0.0037603125 = weight(_text_:e in 363) [ClassicSimilarity], result of:
      0.0037603125 = score(doc=363,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.07940422 = fieldWeight in 363, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.0390625 = fieldNorm(doc=363)
  0.16666667 = coord(1/6)
    Language
    e
  6. Waltman, L.; Calero-Medina, C.; Kosten, J.; Noyons, E.C.M.; Tijssen, R.J.W.; Eck, N.J. van; Leeuwen, T.N. van; Raan, A.F.J. van; Visser, M.S.; Wouters, P.: ¬The Leiden ranking 2011/2012 : data collection, indicators, and interpretation (2012) 0.00 
    6.2671874E-4 = product of:
  0.0037603125 = sum of:
    0.0037603125 = weight(_text_:e in 514) [ClassicSimilarity], result of:
      0.0037603125 = score(doc=514,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.07940422 = fieldWeight in 514, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.0390625 = fieldNorm(doc=514)
  0.16666667 = coord(1/6)
    Language
    e
  7. Costas, R.; Leeuwen, T.N. van; Bordons, M.: Referencing patterns of individual researchers : do top scientists rely on more extensive information sources? (2012) 0.00 
    6.2671874E-4 = product of:
  0.0037603125 = sum of:
    0.0037603125 = weight(_text_:e in 516) [ClassicSimilarity], result of:
      0.0037603125 = score(doc=516,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.07940422 = fieldWeight in 516, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.0390625 = fieldNorm(doc=516)
  0.16666667 = coord(1/6)
    Language
    e
  8. Moed, H.F.; Leeuwen, T.N. van; Reedijk, J.: ¬A new classification system to describe the ageing of scientific journals and their impact factors (1998) 0.00 
    5.01375E-4 = product of:
  0.00300825 = sum of:
    0.00300825 = weight(_text_:e in 4719) [ClassicSimilarity], result of:
      0.00300825 = score(doc=4719,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.063523374 = fieldWeight in 4719, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03125 = fieldNorm(doc=4719)
  0.16666667 = coord(1/6)
    Language
    e

Authors

Years