Search (14 results, page 1 of 1)

Leydesdorff, L.; Sun, Y.: National and international dimensions of the Triple Helix in Japan : university-industry-government versus international coauthorship relations (2009) 0.05

0.045762774 = product of:
  0.13728832 = sum of:
    0.13728832 = sum of:
      0.1009481 = weight(_text_:2009 in 2761) [ClassicSimilarity], result of:
        0.1009481 = score(doc=2761,freq=5.0), product of:
          0.20749448 = queryWeight, product of:
            4.6415744 = idf(docFreq=1158, maxDocs=44218)
            0.04470347 = queryNorm
          0.4865098 = fieldWeight in 2761, product of:
            2.236068 = tf(freq=5.0), with freq of:
              5.0 = termFreq=5.0
            4.6415744 = idf(docFreq=1158, maxDocs=44218)
            0.046875 = fieldNorm(doc=2761)
      0.036340214 = weight(_text_:22 in 2761) [ClassicSimilarity], result of:
        0.036340214 = score(doc=2761,freq=2.0), product of:
          0.15654393 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.04470347 = 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)
  0.33333334 = coord(1/3)

Date: 22. 3.2009 19:07:20
Source: Journal of the American Society for Information Science and Technology. 60(2009) no.4, S.778-788
Year: 2009

Egghe, L.; Leydesdorff, L.: ¬The relation between Pearson's correlation coefficient r and Salton's cosine measure (2009) 0.02

0.016824685 = product of:
  0.05047405 = sum of:
    0.05047405 = product of:
      0.1009481 = sum of:
        0.1009481 = weight(_text_:2009 in 2803) [ClassicSimilarity], result of:
          0.1009481 = score(doc=2803,freq=5.0), product of:
            0.20749448 = queryWeight, product of:
              4.6415744 = idf(docFreq=1158, maxDocs=44218)
              0.04470347 = queryNorm
            0.4865098 = fieldWeight in 2803, product of:
              2.236068 = tf(freq=5.0), with freq of:
                5.0 = termFreq=5.0
              4.6415744 = idf(docFreq=1158, maxDocs=44218)
              0.046875 = fieldNorm(doc=2803)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Source: Journal of the American Society for Information Science and Technology. 60(2009) no.5, S.1027-1036
Year: 2009

Bensman, S.J.; Leydesdorff, L.: Definition and identification of journals as bibliographic and subject entities : librarianship versus ISI Journal Citation Reports methods and their effect on citation measures (2009) 0.02

0.016824685 = product of:
  0.05047405 = sum of:
    0.05047405 = product of:
      0.1009481 = sum of:
        0.1009481 = weight(_text_:2009 in 2840) [ClassicSimilarity], result of:
          0.1009481 = score(doc=2840,freq=5.0), product of:
            0.20749448 = queryWeight, product of:
              4.6415744 = idf(docFreq=1158, maxDocs=44218)
              0.04470347 = queryNorm
            0.4865098 = fieldWeight in 2840, product of:
              2.236068 = tf(freq=5.0), with freq of:
                5.0 = termFreq=5.0
              4.6415744 = idf(docFreq=1158, maxDocs=44218)
              0.046875 = fieldNorm(doc=2840)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Source: Journal of the American Society for Information Science and Technology. 60(2009) no.6, S.1097-1117
Year: 2009

Leydesdorff, L.: How are new citation-based journal indicators adding to the bibliometric toolbox? (2009) 0.02

0.016824685 = product of:
  0.05047405 = sum of:
    0.05047405 = product of:
      0.1009481 = sum of:
        0.1009481 = weight(_text_:2009 in 2929) [ClassicSimilarity], result of:
          0.1009481 = score(doc=2929,freq=5.0), product of:
            0.20749448 = queryWeight, product of:
              4.6415744 = idf(docFreq=1158, maxDocs=44218)
              0.04470347 = queryNorm
            0.4865098 = fieldWeight in 2929, product of:
              2.236068 = tf(freq=5.0), with freq of:
                5.0 = termFreq=5.0
              4.6415744 = idf(docFreq=1158, maxDocs=44218)
              0.046875 = fieldNorm(doc=2929)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Source: Journal of the American Society for Information Science and Technology. 60(2009) no.7, S.1327-1336
Year: 2009

Leydesdorff, L.; Probst, C.: ¬The delineation of an interdisciplinary specialty in terms of a journal set : the case of communication studies (2009) 0.02

0.016824685 = product of:
  0.05047405 = sum of:
    0.05047405 = product of:
      0.1009481 = sum of:
        0.1009481 = weight(_text_:2009 in 2952) [ClassicSimilarity], result of:
          0.1009481 = score(doc=2952,freq=5.0), product of:
            0.20749448 = queryWeight, product of:
              4.6415744 = idf(docFreq=1158, maxDocs=44218)
              0.04470347 = queryNorm
            0.4865098 = fieldWeight in 2952, product of:
              2.236068 = tf(freq=5.0), with freq of:
                5.0 = termFreq=5.0
              4.6415744 = idf(docFreq=1158, maxDocs=44218)
              0.046875 = fieldNorm(doc=2952)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Source: Journal of the American Society for Information Science and Technology. 60(2009) no.8, S.1709-1718
Year: 2009

Leydesdorff, L.; Rafols, I.: ¬A global map of science based on the ISI subject categories (2009) 0.01

0.01402057 = product of:
  0.04206171 = sum of:
    0.04206171 = product of:
      0.08412342 = sum of:
        0.08412342 = weight(_text_:2009 in 2713) [ClassicSimilarity], result of:
          0.08412342 = score(doc=2713,freq=5.0), product of:
            0.20749448 = queryWeight, product of:
              4.6415744 = idf(docFreq=1158, maxDocs=44218)
              0.04470347 = queryNorm
            0.40542483 = fieldWeight in 2713, product of:
              2.236068 = tf(freq=5.0), with freq of:
                5.0 = termFreq=5.0
              4.6415744 = idf(docFreq=1158, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2713)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Source: Journal of the American Society for Information Science and Technology. 60(2009) no.2, S.348-362
Year: 2009

Rafols, I.; Leydesdorff, L.: Content-based and algorithmic classifications of journals : perspectives on the dynamics of scientific communication and indexer effects (2009) 0.01

0.01402057 = product of:
  0.04206171 = sum of:
    0.04206171 = product of:
      0.08412342 = sum of:
        0.08412342 = weight(_text_:2009 in 3095) [ClassicSimilarity], result of:
          0.08412342 = score(doc=3095,freq=5.0), product of:
            0.20749448 = queryWeight, product of:
              4.6415744 = idf(docFreq=1158, maxDocs=44218)
              0.04470347 = queryNorm
            0.40542483 = fieldWeight in 3095, product of:
              2.236068 = tf(freq=5.0), with freq of:
                5.0 = termFreq=5.0
              4.6415744 = idf(docFreq=1158, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3095)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Source: Journal of the American Society for Information Science and Technology. 60(2009) no.9, S.1823-1835
Year: 2009

Lucio-Arias, D.; Leydesdorff, L.: ¬An indicator of research front activity : measuring intellectual organization as uncertainty reduction in document sets (2009) 0.01

0.01402057 = product of:
  0.04206171 = sum of:
    0.04206171 = product of:
      0.08412342 = sum of:
        0.08412342 = weight(_text_:2009 in 3297) [ClassicSimilarity], result of:
          0.08412342 = score(doc=3297,freq=5.0), product of:
            0.20749448 = queryWeight, product of:
              4.6415744 = idf(docFreq=1158, maxDocs=44218)
              0.04470347 = queryNorm
            0.40542483 = fieldWeight in 3297, product of:
              2.236068 = tf(freq=5.0), with freq of:
                5.0 = termFreq=5.0
              4.6415744 = idf(docFreq=1158, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3297)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Source: Journal of the American Society for Information Science and Technology. 60(2009) no.12, S.2488-2498
Year: 2009

Leydesdorff, L.: ¬The construction and globalization of the knowledge base in inter-human communication systems (2003) 0.01

0.0060567027 = product of:
  0.018170107 = sum of:
    0.018170107 = product of:
      0.036340214 = sum of:
        0.036340214 = weight(_text_:22 in 1621) [ClassicSimilarity], result of:
          0.036340214 = score(doc=1621,freq=2.0), product of:
            0.15654393 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04470347 = 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)
  0.33333334 = coord(1/3)

Date: 22. 5.2003 19:48:04

Leydesdorff, L.: Can networks of journal-journal citations be used as indicators of change in the social sciences? (2003) 0.01

0.0060567027 = product of:
  0.018170107 = sum of:
    0.018170107 = product of:
      0.036340214 = sum of:
        0.036340214 = weight(_text_:22 in 4460) [ClassicSimilarity], result of:
          0.036340214 = score(doc=4460,freq=2.0), product of:
            0.15654393 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04470347 = 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)
  0.33333334 = coord(1/3)

Date: 6.11.2005 19:02:22

Leydesdorff, L.; Bornmann, L.; Wagner, C.S.: ¬The relative influences of government funding and international collaboration on citation impact (2019) 0.01

0.0060567027 = product of:
  0.018170107 = sum of:
    0.018170107 = product of:
      0.036340214 = sum of:
        0.036340214 = weight(_text_:22 in 4681) [ClassicSimilarity], result of:
          0.036340214 = score(doc=4681,freq=2.0), product of:
            0.15654393 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04470347 = 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)
  0.33333334 = coord(1/3)

Date: 8. 1.2019 18:22:45

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) 0.01

0.0050472524 = product of:
  0.015141757 = sum of:
    0.015141757 = product of:
      0.030283514 = sum of:
        0.030283514 = weight(_text_:22 in 4186) [ClassicSimilarity], result of:
          0.030283514 = score(doc=4186,freq=2.0), product of:
            0.15654393 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04470347 = 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)
  0.33333334 = coord(1/3)

Date: 22. 1.2011 12:51:07

Hellsten, I.; Leydesdorff, L.: ¬The construction of interdisciplinarity : the development of the knowledge base and programmatic focus of the journal Climatic Change, 1977-2013 (2016) 0.01

0.0050472524 = product of:
  0.015141757 = sum of:
    0.015141757 = product of:
      0.030283514 = sum of:
        0.030283514 = weight(_text_:22 in 3089) [ClassicSimilarity], result of:
          0.030283514 = score(doc=3089,freq=2.0), product of:
            0.15654393 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04470347 = queryNorm
            0.19345059 = fieldWeight in 3089, 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=3089)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Date: 24. 8.2016 17:53:22

Leydesdorff, L.; Johnson, M.W.; Ivanova, I.: Toward a calculus of redundancy : signification, codification, and anticipation in cultural evolution (2018) 0.01

0.0050472524 = product of:
  0.015141757 = sum of:
    0.015141757 = product of:
      0.030283514 = sum of:
        0.030283514 = weight(_text_:22 in 4463) [ClassicSimilarity], result of:
          0.030283514 = score(doc=4463,freq=2.0), product of:
            0.15654393 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04470347 = queryNorm
            0.19345059 = fieldWeight in 4463, 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=4463)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Date: 29. 9.2018 11:22:09

Search (14 results, page 1 of 1)

Authors

Years

Themes