Search (6 results, page 1 of 1)

  • × author_ss:"Raan, A.F.J. van"
  • × theme_ss:"Informetrie"
  1. Raan, A.F.J. van: Scaling rules in the science system : influence of field-specific citation characteristics on the impact of research groups (2008) 0.02
    0.018543491 = product of:
      0.046358727 = sum of:
        0.029493032 = weight(_text_:u in 2758) [ClassicSimilarity], result of:
          0.029493032 = score(doc=2758,freq=2.0), product of:
            0.13587062 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.041494254 = queryNorm
            0.21706703 = fieldWeight in 2758, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.046875 = fieldNorm(doc=2758)
        0.016865695 = product of:
          0.03373139 = sum of:
            0.03373139 = weight(_text_:22 in 2758) [ClassicSimilarity], result of:
              0.03373139 = score(doc=2758,freq=2.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = queryNorm
                0.23214069 = fieldWeight in 2758, 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=2758)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    22. 3.2009 19:03:12
    Footnote
    Vgl. auch: Costas, R., M. Bordons u. T.N. van Leeuwen u.a.: Scaling rules in the science system: Influence of field-specific citation characteristics on the impact of individual researchers. In: Journal of the American Society for Information Science and Technology. 60(2009) no.4, S.740-753.
  2. Waltman, L.; Eck, N.J. van; Raan, A.F.J. van: Universality of citation distributions revisited (2012) 0.01
    0.0050697834 = product of:
      0.025348917 = sum of:
        0.025348917 = product of:
          0.050697833 = sum of:
            0.050697833 = weight(_text_:l in 4963) [ClassicSimilarity], result of:
              0.050697833 = score(doc=4963,freq=2.0), product of:
                0.16492525 = queryWeight, product of:
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.041494254 = queryNorm
                0.30739886 = fieldWeight in 4963, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=4963)
          0.5 = coord(1/2)
      0.2 = coord(1/5)
    
  3. Raan, A.F.J. van; Noyons, E.C.M.: Discovery of patterns of scientific and technological development and knowledge transfer (2002) 0.00
    0.0049155056 = product of:
      0.024577528 = sum of:
        0.024577528 = weight(_text_:u in 3603) [ClassicSimilarity], result of:
          0.024577528 = score(doc=3603,freq=2.0), product of:
            0.13587062 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.041494254 = queryNorm
            0.1808892 = fieldWeight in 3603, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3603)
      0.2 = coord(1/5)
    
    Source
    Gaining insight from research information (CRIS2002): Proceedings of the 6th International Conference an Current Research Information Systems, University of Kassel, August 29 - 31, 2002. Eds: W. Adamczak u. A. Nase
  4. Raan, A.F.J. van: Statistical properties of bibliometric indicators : research group indicator distributions and correlations (2006) 0.00
    0.00477034 = product of:
      0.023851698 = sum of:
        0.023851698 = product of:
          0.047703397 = sum of:
            0.047703397 = weight(_text_:22 in 5275) [ClassicSimilarity], result of:
              0.047703397 = score(doc=5275,freq=4.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = queryNorm
                0.32829654 = fieldWeight in 5275, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=5275)
          0.5 = coord(1/2)
      0.2 = coord(1/5)
    
    Date
    22. 7.2006 16:20:22
  5. 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
    0.0036212734 = product of:
      0.018106367 = sum of:
        0.018106367 = product of:
          0.036212735 = sum of:
            0.036212735 = weight(_text_:l in 514) [ClassicSimilarity], result of:
              0.036212735 = score(doc=514,freq=2.0), product of:
                0.16492525 = queryWeight, product of:
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.041494254 = queryNorm
                0.2195706 = fieldWeight in 514, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=514)
          0.5 = coord(1/2)
      0.2 = coord(1/5)
    
  6. 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
    0.0028109495 = product of:
      0.014054747 = sum of:
        0.014054747 = product of:
          0.028109495 = sum of:
            0.028109495 = weight(_text_:22 in 2759) [ClassicSimilarity], result of:
              0.028109495 = score(doc=2759,freq=2.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = 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)
          0.5 = coord(1/2)
      0.2 = coord(1/5)
    
    Date
    22. 3.2009 19:02:48