Search (6 results, page 1 of 1)

  • × author_ss:"Oppenheim, C."
  • × language_ss:"e"
  • × theme_ss:"Informetrie"
  1. Norris, M.; Oppenheim, C.: ¬The h-index : a broad review of a new bibliometric indicator (2010) 0.00
    0.0018037981 = product of:
      0.018639248 = sum of:
        0.008940164 = weight(_text_:20 in 4147) [ClassicSimilarity], result of:
          0.008940164 = score(doc=4147,freq=2.0), product of:
            0.05887406 = queryWeight, product of:
              2.748821 = idf(docFreq=7692, maxDocs=44218)
              0.02141793 = queryNorm
            0.15185234 = fieldWeight in 4147, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.748821 = idf(docFreq=7692, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4147)
        0.0024444978 = weight(_text_:e in 4147) [ClassicSimilarity], result of:
          0.0024444978 = score(doc=4147,freq=2.0), product of:
            0.03078549 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.02141793 = queryNorm
            0.07940422 = fieldWeight in 4147, 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=4147)
        0.007254585 = product of:
          0.01450917 = sum of:
            0.01450917 = weight(_text_:22 in 4147) [ClassicSimilarity], result of:
              0.01450917 = score(doc=4147,freq=2.0), product of:
                0.07500195 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.02141793 = queryNorm
                0.19345059 = fieldWeight in 4147, 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=4147)
          0.5 = coord(1/2)
      0.09677419 = coord(3/31)
    
    Date
    10. 3.1997 20:31:13
    8. 1.2011 19:22:13
    Language
    e
  2. Oppenheim, C.; Stuart, D.: Is there a correlation between investment in an academic library and a higher education institution's ratings in the Research Assessment Exercise? (2004) 0.00
    0.0011680876 = product of:
      0.018105358 = sum of:
        0.015171961 = weight(_text_:20 in 668) [ClassicSimilarity], result of:
          0.015171961 = score(doc=668,freq=4.0), product of:
            0.05887406 = queryWeight, product of:
              2.748821 = idf(docFreq=7692, maxDocs=44218)
              0.02141793 = queryNorm
            0.25770196 = fieldWeight in 668, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              2.748821 = idf(docFreq=7692, maxDocs=44218)
              0.046875 = fieldNorm(doc=668)
        0.0029333972 = weight(_text_:e in 668) [ClassicSimilarity], result of:
          0.0029333972 = score(doc=668,freq=2.0), product of:
            0.03078549 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.02141793 = queryNorm
            0.09528506 = fieldWeight in 668, 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=668)
      0.06451613 = coord(2/31)
    
    Date
    12. 3.2001 11:34:20
    20. 1.2007 18:31:42
    Language
    e
  3. Johnson, B.; Oppenheim, C.: How socially connected are citers to those that they cite? (2007) 0.00
    7.344943E-4 = product of:
      0.011384662 = sum of:
        0.008940164 = weight(_text_:20 in 839) [ClassicSimilarity], result of:
          0.008940164 = score(doc=839,freq=2.0), product of:
            0.05887406 = queryWeight, product of:
              2.748821 = idf(docFreq=7692, maxDocs=44218)
              0.02141793 = queryNorm
            0.15185234 = fieldWeight in 839, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.748821 = idf(docFreq=7692, maxDocs=44218)
              0.0390625 = fieldNorm(doc=839)
        0.0024444978 = weight(_text_:e in 839) [ClassicSimilarity], result of:
          0.0024444978 = score(doc=839,freq=2.0), product of:
            0.03078549 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.02141793 = queryNorm
            0.07940422 = fieldWeight in 839, 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=839)
      0.06451613 = coord(2/31)
    
    Date
    10. 3.1997 20:31:13
    Language
    e
  4. Oppenheim, C.: Do citations count? : Citation indexing and the Research Assessment Exercise (RAE) (1996) 0.00
    1.2616762E-4 = product of:
      0.0039111963 = sum of:
        0.0039111963 = weight(_text_:e in 6673) [ClassicSimilarity], result of:
          0.0039111963 = score(doc=6673,freq=2.0), product of:
            0.03078549 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.02141793 = queryNorm
            0.12704675 = fieldWeight in 6673, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0625 = fieldNorm(doc=6673)
      0.032258064 = coord(1/31)
    
    Language
    e
  5. Oppenheim, C.: Using the h-Index to rank influential British researchers in information science and librarianship (2007) 0.00
    9.462571E-5 = product of:
      0.0029333972 = sum of:
        0.0029333972 = weight(_text_:e in 780) [ClassicSimilarity], result of:
          0.0029333972 = score(doc=780,freq=2.0), product of:
            0.03078549 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.02141793 = queryNorm
            0.09528506 = fieldWeight in 780, 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=780)
      0.032258064 = coord(1/31)
    
    Language
    e
  6. Norris, M.; Oppenheim, C.; Rowland, F.: ¬The citation advantage of open-access articles (2008) 0.00
    7.885476E-5 = product of:
      0.0024444978 = sum of:
        0.0024444978 = weight(_text_:e in 2374) [ClassicSimilarity], result of:
          0.0024444978 = score(doc=2374,freq=2.0), product of:
            0.03078549 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.02141793 = queryNorm
            0.07940422 = fieldWeight in 2374, 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=2374)
      0.032258064 = coord(1/31)
    
    Language
    e