Search (11 results, page 1 of 1)

  • × theme_ss:"Informetrie"
  • × theme_ss:"Citation indexing"
  1. Garfield, E.; Sher, I.H.: New factors in the evaluation of scientific literature literature through citation indexing (1963) 0.08
    0.08074833 = product of:
      0.16149665 = sum of:
        0.16149665 = product of:
          0.3229933 = sum of:
            0.3229933 = weight(_text_:201 in 8242) [ClassicSimilarity], result of:
              0.3229933 = score(doc=8242,freq=2.0), product of:
                0.32321984 = queryWeight, product of:
                  6.4604454 = idf(docFreq=187, maxDocs=44218)
                  0.05003058 = queryNorm
                0.99929917 = fieldWeight in 8242, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  6.4604454 = idf(docFreq=187, maxDocs=44218)
                  0.109375 = fieldNorm(doc=8242)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    American documentation. 14(1963) no.3, S.195-201
  2. Száva-Kováts, E.: Indirect-collective referencing (ICR) in the elite journal literature of physics : I: a literature science study on the journal level (2001) 0.04
    0.040374164 = product of:
      0.08074833 = sum of:
        0.08074833 = product of:
          0.16149665 = sum of:
            0.16149665 = weight(_text_:201 in 5180) [ClassicSimilarity], result of:
              0.16149665 = score(doc=5180,freq=2.0), product of:
                0.32321984 = queryWeight, product of:
                  6.4604454 = idf(docFreq=187, maxDocs=44218)
                  0.05003058 = queryNorm
                0.49964958 = fieldWeight in 5180, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  6.4604454 = idf(docFreq=187, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=5180)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of the American Society for Information Science and technology. 52(2001) no.3, S.201-211
  3. Nicolaisen, J.: Citation analysis (2007) 0.03
    0.027113812 = product of:
      0.054227624 = sum of:
        0.054227624 = product of:
          0.10845525 = sum of:
            0.10845525 = weight(_text_:22 in 6091) [ClassicSimilarity], result of:
              0.10845525 = score(doc=6091,freq=2.0), product of:
                0.17519857 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05003058 = queryNorm
                0.61904186 = fieldWeight in 6091, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.125 = fieldNorm(doc=6091)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    13. 7.2008 19:53:22
  4. Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001) 0.02
    0.02396545 = product of:
      0.0479309 = sum of:
        0.0479309 = product of:
          0.0958618 = sum of:
            0.0958618 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
              0.0958618 = score(doc=3925,freq=4.0), product of:
                0.17519857 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05003058 = queryNorm
                0.54716086 = fieldWeight in 3925, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=3925)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 7.2006 15:22:28
  5. Száva-Kováts, E.: Indirect-collective referencing (ICR) in the elite journal literature of physics : II: a literature science study on the level of communications (2002) 0.02
    0.023070952 = product of:
      0.046141904 = sum of:
        0.046141904 = product of:
          0.09228381 = sum of:
            0.09228381 = weight(_text_:201 in 180) [ClassicSimilarity], result of:
              0.09228381 = score(doc=180,freq=2.0), product of:
                0.32321984 = queryWeight, product of:
                  6.4604454 = idf(docFreq=187, maxDocs=44218)
                  0.05003058 = queryNorm
                0.28551406 = fieldWeight in 180, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  6.4604454 = idf(docFreq=187, maxDocs=44218)
                  0.03125 = fieldNorm(doc=180)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    In the author's three previous articles dealing with the ICR phenomenon (JASIS, 49, 1998, 477-481; 50, 1999, 1284-1294; JASIST, 52, 2001, 201-211) the nature, life course, and importance of this phenomenon of scientific literature was demonstrated. It was shown that the quantity of nonindexed indirect-collective references in The Physical Review now alone exceeds many times over the quantity of formal references listed in the Science Citation Index as "citations." It was shown that the ICR phenomenon is present in all the 44 elite physics journals of a representative sample of this literature. The bibliometrically very heterogeneous sample is very homogeneous regarding the presence and frequency of the ICR phenomenon. However, no real connection could be found between the simple degree of documentedness and the presence and frequency of the ICR phenomenon on the journal level of the sample. The present article reports the findings of the latest ICR investigation carried out on the level of communications of the representative sample. Correlation calculations were carried out in the stock of all 458 communications containing the ICR phenomenon as a statistical population, and within this population also in the groups of communications of the "normal" and the "letter" journals, and the "short communications." The correlation analysis did not find notable statistical correlation between the simple and specific degree of documentedness of a communication and the number of works cited in it by ICR act(s) either in the total population or in the selected groups. There is no correlation either statistical or real (i.e., cause-and-effect) between the documentedness of scientific communications made by their authors and the presence and intensity of the ICR method used by their authors. However, in reality there exists a very strong connection between these two statistically independent variables: both depend on the referencing author, on his/her subjectivity and barely limited subjective free will. This subjective free will shapes the stock of the formal-direct references of scientific communications, thereby placing the achievements cited in this way and their creators into the (indexed) showcase of present Big Science. The same free will decides on the use or nonuse of the ICR method, and in the case of use also on the intensity with which the method is used
  6. Larivière, V.; Gingras, Y.; Archambault, E.: ¬The decline in the concentration of citations, 1900-2007 (2009) 0.01
    0.014379271 = product of:
      0.028758543 = sum of:
        0.028758543 = product of:
          0.057517085 = sum of:
            0.057517085 = weight(_text_:22 in 2763) [ClassicSimilarity], result of:
              0.057517085 = score(doc=2763,freq=4.0), product of:
                0.17519857 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05003058 = queryNorm
                0.32829654 = fieldWeight in 2763, 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=2763)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 3.2009 19:22:35
  7. Chan, H.C.; Kim, H.-W.; Tan, W.C.: Information systems citation patterns from International Conference on Information Systems articles (2006) 0.01
    0.010167679 = product of:
      0.020335358 = sum of:
        0.020335358 = product of:
          0.040670715 = sum of:
            0.040670715 = weight(_text_:22 in 201) [ClassicSimilarity], result of:
              0.040670715 = score(doc=201,freq=2.0), product of:
                0.17519857 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05003058 = queryNorm
                0.23214069 = fieldWeight in 201, 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=201)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    3. 1.2007 17:22:03
  8. H-Index auch im Web of Science (2008) 0.01
    0.010167679 = product of:
      0.020335358 = sum of:
        0.020335358 = product of:
          0.040670715 = sum of:
            0.040670715 = weight(_text_:22 in 590) [ClassicSimilarity], result of:
              0.040670715 = score(doc=590,freq=2.0), product of:
                0.17519857 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05003058 = queryNorm
                0.23214069 = fieldWeight in 590, 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=590)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    6. 4.2008 19:04:22
  9. Mingers, J.; Burrell, Q.L.: Modeling citation behavior in Management Science journals (2006) 0.01
    0.010167679 = product of:
      0.020335358 = sum of:
        0.020335358 = product of:
          0.040670715 = sum of:
            0.040670715 = weight(_text_:22 in 994) [ClassicSimilarity], result of:
              0.040670715 = score(doc=994,freq=2.0), product of:
                0.17519857 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05003058 = queryNorm
                0.23214069 = fieldWeight in 994, 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=994)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    26.12.2007 19:22:05
  10. Hayer, L.: Lazarsfeld zitiert : eine bibliometrische Analyse (2008) 0.01
    0.008473067 = product of:
      0.016946133 = sum of:
        0.016946133 = product of:
          0.033892266 = sum of:
            0.033892266 = weight(_text_:22 in 1934) [ClassicSimilarity], result of:
              0.033892266 = score(doc=1934,freq=2.0), product of:
                0.17519857 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05003058 = queryNorm
                0.19345059 = fieldWeight in 1934, 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=1934)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 6.2008 12:54:12
  11. Ahlgren, P.; Jarneving, B.; Rousseau, R.: Requirements for a cocitation similarity measure, with special reference to Pearson's correlation coefficient (2003) 0.01
    0.006778453 = product of:
      0.013556906 = sum of:
        0.013556906 = product of:
          0.027113812 = sum of:
            0.027113812 = weight(_text_:22 in 5171) [ClassicSimilarity], result of:
              0.027113812 = score(doc=5171,freq=2.0), product of:
                0.17519857 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05003058 = queryNorm
                0.15476047 = fieldWeight in 5171, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03125 = fieldNorm(doc=5171)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    9. 7.2006 10:22:35