Search (7 results, page 1 of 1)

  • × year_i:[2000 TO 2010}
  • × author_ss:"Leydesdorff, L."
  1. Leydesdorff, L.: Should co-occurrence data be normalized : a rejoinder (2007) 0.05
    0.047804512 = product of:
      0.095609024 = sum of:
        0.095609024 = product of:
          0.19121805 = sum of:
            0.19121805 = weight(_text_:2007 in 627) [ClassicSimilarity], result of:
              0.19121805 = score(doc=627,freq=5.0), product of:
                0.20205033 = queryWeight, product of:
                  4.514535 = idf(docFreq=1315, maxDocs=44218)
                  0.044755515 = queryNorm
                0.94638824 = fieldWeight in 627, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.514535 = idf(docFreq=1315, maxDocs=44218)
                  0.09375 = fieldNorm(doc=627)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of the American Society for Information Science and Technology. 58(2007) no.14, S.2411-2413
    Year
    2007
  2. Zhou, P.; Leydesdorff, L.: ¬A comparison between the China Scientific and Technical Papers and Citations Database and the Science Citation Index in terms of journal hierarchies and interjournal citation relations (2007) 0.02
    0.023902256 = product of:
      0.047804512 = sum of:
        0.047804512 = product of:
          0.095609024 = sum of:
            0.095609024 = weight(_text_:2007 in 70) [ClassicSimilarity], result of:
              0.095609024 = score(doc=70,freq=5.0), product of:
                0.20205033 = queryWeight, product of:
                  4.514535 = idf(docFreq=1315, maxDocs=44218)
                  0.044755515 = queryNorm
                0.47319412 = fieldWeight in 70, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.514535 = idf(docFreq=1315, maxDocs=44218)
                  0.046875 = fieldNorm(doc=70)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of the American Society for Information Science and Technology. 58(2007) no.2, S.223-236
    Year
    2007
  3. Leydesdorff, L.: Betweenness centrality as an indicator of the interdisciplinarity of scientific journals (2007) 0.02
    0.023902256 = product of:
      0.047804512 = sum of:
        0.047804512 = product of:
          0.095609024 = sum of:
            0.095609024 = weight(_text_:2007 in 453) [ClassicSimilarity], result of:
              0.095609024 = score(doc=453,freq=5.0), product of:
                0.20205033 = queryWeight, product of:
                  4.514535 = idf(docFreq=1315, maxDocs=44218)
                  0.044755515 = queryNorm
                0.47319412 = fieldWeight in 453, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.514535 = idf(docFreq=1315, maxDocs=44218)
                  0.046875 = fieldNorm(doc=453)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of the American Society for Information Science and Technology. 58(2007) no.9, S.1303-1319
    Year
    2007
  4. Leydesdorff, L.: Visualization of the citation impact environments of scientific journals : an online mapping exercise (2007) 0.02
    0.019918546 = product of:
      0.039837092 = sum of:
        0.039837092 = product of:
          0.079674184 = sum of:
            0.079674184 = weight(_text_:2007 in 82) [ClassicSimilarity], result of:
              0.079674184 = score(doc=82,freq=5.0), product of:
                0.20205033 = queryWeight, product of:
                  4.514535 = idf(docFreq=1315, maxDocs=44218)
                  0.044755515 = queryNorm
                0.39432842 = fieldWeight in 82, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.514535 = idf(docFreq=1315, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=82)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of the American Society for Information Science and Technology. 58(2007) no.1, S.25-38
    Year
    2007
  5. Leydesdorff, L.: ¬The construction and globalization of the knowledge base in inter-human communication systems (2003) 0.01
    0.009095631 = product of:
      0.018191261 = sum of:
        0.018191261 = product of:
          0.036382522 = sum of:
            0.036382522 = weight(_text_:22 in 1621) [ClassicSimilarity], result of:
              0.036382522 = score(doc=1621,freq=2.0), product of:
                0.15672618 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044755515 = queryNorm
                0.23214069 = fieldWeight in 1621, 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=1621)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 5.2003 19:48:04
  6. Leydesdorff, L.: Can networks of journal-journal citations be used as indicators of change in the social sciences? (2003) 0.01
    0.009095631 = product of:
      0.018191261 = sum of:
        0.018191261 = product of:
          0.036382522 = sum of:
            0.036382522 = weight(_text_:22 in 4460) [ClassicSimilarity], result of:
              0.036382522 = score(doc=4460,freq=2.0), product of:
                0.15672618 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044755515 = queryNorm
                0.23214069 = fieldWeight in 4460, 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=4460)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    6.11.2005 19:02:22
  7. Leydesdorff, L.; Sun, Y.: National and international dimensions of the Triple Helix in Japan : university-industry-government versus international coauthorship relations (2009) 0.01
    0.009095631 = product of:
      0.018191261 = sum of:
        0.018191261 = product of:
          0.036382522 = sum of:
            0.036382522 = weight(_text_:22 in 2761) [ClassicSimilarity], result of:
              0.036382522 = score(doc=2761,freq=2.0), product of:
                0.15672618 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044755515 = queryNorm
                0.23214069 = fieldWeight in 2761, 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=2761)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 3.2009 19:07:20