Search (3 results, page 1 of 1)

  • × author_ss:"Leydesdorff, L."
  • × theme_ss:"Informetrie"
  • × year_i:[1990 TO 2000}
  1. Leydesdorff, L.: ¬The generation of aggregated journal-journal citation maps on the basis of the CD-ROM version of the Science Citation Index (1994) 0.00
    0.0024045901 = product of:
      0.0072137704 = sum of:
        0.0072137704 = weight(_text_:e in 8281) [ClassicSimilarity], result of:
          0.0072137704 = score(doc=8281,freq=2.0), product of:
            0.064891934 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0451463 = queryNorm
            0.1111659 = fieldWeight in 8281, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0546875 = fieldNorm(doc=8281)
      0.33333334 = coord(1/3)
    
    Language
    e
  2. Leydesdorff, L.: Theories of citation? (1999) 0.00
    0.0024045901 = product of:
      0.0072137704 = sum of:
        0.0072137704 = weight(_text_:e in 5130) [ClassicSimilarity], result of:
          0.0072137704 = score(doc=5130,freq=2.0), product of:
            0.064891934 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0451463 = queryNorm
            0.1111659 = fieldWeight in 5130, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0546875 = fieldNorm(doc=5130)
      0.33333334 = coord(1/3)
    
    Language
    e
  3. Leydesdorff, L.: Why words and co-word cannot map the development of the science (1997) 0.00
    0.0020610774 = product of:
      0.0061832317 = sum of:
        0.0061832317 = weight(_text_:e in 147) [ClassicSimilarity], result of:
          0.0061832317 = score(doc=147,freq=2.0), product of:
            0.064891934 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0451463 = queryNorm
            0.09528506 = fieldWeight in 147, 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=147)
      0.33333334 = coord(1/3)
    
    Language
    e