Search (113 results, page 1 of 6)

  • × language_ss:"e"
  • × theme_ss:"Informetrie"
  • × type_ss:"a"
  1. Siddiqui, M.A.: ¬A bibliometric study of authorship characteristics in four international information science journals (1997) 0.07
    0.07403042 = product of:
      0.14806084 = sum of:
        0.14806084 = sum of:
          0.112 = weight(_text_:m.a in 853) [ClassicSimilarity], result of:
            0.112 = score(doc=853,freq=2.0), product of:
              0.27376357 = queryWeight, product of:
                6.1714344 = idf(docFreq=250, maxDocs=44218)
                0.044359796 = queryNorm
              0.40911216 = fieldWeight in 853, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.1714344 = idf(docFreq=250, maxDocs=44218)
                0.046875 = fieldNorm(doc=853)
          0.03606084 = weight(_text_:22 in 853) [ClassicSimilarity], result of:
            0.03606084 = score(doc=853,freq=2.0), product of:
              0.15534045 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.044359796 = queryNorm
              0.23214069 = fieldWeight in 853, 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=853)
      0.5 = coord(1/2)
    
    Source
    International forum on information and documentation. 22(1997) no.3, S.3-23
  2. Gianoli, E.; Molina-Montenegro, M.A.: Insights into the relationship between the h-index and self-citations (2009) 0.04
    0.037333336 = product of:
      0.07466667 = sum of:
        0.07466667 = product of:
          0.14933334 = sum of:
            0.14933334 = weight(_text_:m.a in 2859) [ClassicSimilarity], result of:
              0.14933334 = score(doc=2859,freq=2.0), product of:
                0.27376357 = queryWeight, product of:
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.044359796 = queryNorm
                0.5454829 = fieldWeight in 2859, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.0625 = fieldNorm(doc=2859)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  3. Spasser, M.A.: ¬The enacted fate of undiscovered public knowledge (1997) 0.03
    0.03266667 = product of:
      0.06533334 = sum of:
        0.06533334 = product of:
          0.13066667 = sum of:
            0.13066667 = weight(_text_:m.a in 198) [ClassicSimilarity], result of:
              0.13066667 = score(doc=198,freq=2.0), product of:
                0.27376357 = queryWeight, product of:
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.044359796 = queryNorm
                0.4772975 = fieldWeight in 198, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=198)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  4. Luna-Morales, M.E.; Collazo-Reyes, F.; Russell, J.M.; Ángel Pérez-Angón, M.A.: Early patterns of scientific production by Mexican researchers in mainstream journals, 1900-1950 (2009) 0.03
    0.028 = product of:
      0.056 = sum of:
        0.056 = product of:
          0.112 = sum of:
            0.112 = weight(_text_:m.a in 2934) [ClassicSimilarity], result of:
              0.112 = score(doc=2934,freq=2.0), product of:
                0.27376357 = queryWeight, product of:
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.044359796 = queryNorm
                0.40911216 = fieldWeight in 2934, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2934)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  5. Egghe, L.: Influence of adding or deleting items and sources on the h-index (2010) 0.03
    0.028 = product of:
      0.056 = sum of:
        0.056 = product of:
          0.112 = sum of:
            0.112 = weight(_text_:m.a in 3336) [ClassicSimilarity], result of:
              0.112 = score(doc=3336,freq=2.0), product of:
                0.27376357 = queryWeight, product of:
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.044359796 = queryNorm
                0.40911216 = fieldWeight in 3336, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.046875 = fieldNorm(doc=3336)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    Adding or deleting items such as self-citations has an influence on the h-index of an author. This influence will be proved mathematically in this article. We hereby prove the experimental finding in E. Gianoli and M.A. Molina-Montenegro ([2009]) that the influence of adding or deleting self-citations on the h-index is greater for low values of the h-index. Why this is logical also is shown by a simple theoretical example. Adding or deleting sources such as adding or deleting minor contributions of an author also has an influence on the h-index of this author; this influence is modeled in this article. This model explains some practical examples found in X. Hu, R. Rousseau, and J. Chen (in press).
  6. Nicholls, P.T.: Empirical validation of Lotka's law (1986) 0.02
    0.02404056 = product of:
      0.04808112 = sum of:
        0.04808112 = product of:
          0.09616224 = sum of:
            0.09616224 = weight(_text_:22 in 5509) [ClassicSimilarity], result of:
              0.09616224 = score(doc=5509,freq=2.0), product of:
                0.15534045 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044359796 = queryNorm
                0.61904186 = fieldWeight in 5509, 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=5509)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Information processing and management. 22(1986), S.417-419
  7. Nicolaisen, J.: Citation analysis (2007) 0.02
    0.02404056 = product of:
      0.04808112 = sum of:
        0.04808112 = product of:
          0.09616224 = sum of:
            0.09616224 = weight(_text_:22 in 6091) [ClassicSimilarity], result of:
              0.09616224 = score(doc=6091,freq=2.0), product of:
                0.15534045 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044359796 = 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
  8. Fiala, J.: Information flood : fiction and reality (1987) 0.02
    0.02404056 = product of:
      0.04808112 = sum of:
        0.04808112 = product of:
          0.09616224 = sum of:
            0.09616224 = weight(_text_:22 in 1080) [ClassicSimilarity], result of:
              0.09616224 = score(doc=1080,freq=2.0), product of:
                0.15534045 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044359796 = queryNorm
                0.61904186 = fieldWeight in 1080, 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=1080)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Thermochimica acta. 110(1987), S.11-22
  9. Tang, R.; Safer, M.A.: Author-rated importance of cited references in biology and psychology publications (2008) 0.02
    0.023333333 = product of:
      0.046666667 = sum of:
        0.046666667 = product of:
          0.093333334 = sum of:
            0.093333334 = weight(_text_:m.a in 1738) [ClassicSimilarity], result of:
              0.093333334 = score(doc=1738,freq=2.0), product of:
                0.27376357 = queryWeight, product of:
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.044359796 = queryNorm
                0.3409268 = fieldWeight in 1738, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=1738)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  10. Couto, T.; Cristo, M.; Gonçalves, M.A.; Calado, P.; Ziviani, N.; Moura, E.; Ribeiro-Neto, B.: ¬A comparative study of citations and links in document classification (2006) 0.02
    0.023333333 = product of:
      0.046666667 = sum of:
        0.046666667 = product of:
          0.093333334 = sum of:
            0.093333334 = weight(_text_:m.a in 2531) [ClassicSimilarity], result of:
              0.093333334 = score(doc=2531,freq=2.0), product of:
                0.27376357 = queryWeight, product of:
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.044359796 = queryNorm
                0.3409268 = fieldWeight in 2531, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2531)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  11. García-Pérez, M.A.: Accuracy and completeness of publication and citation records in the Web of Science, PsycINFO, and Google Scholar : a case study for the computation of h indices in Psychology (2010) 0.02
    0.023333333 = product of:
      0.046666667 = sum of:
        0.046666667 = product of:
          0.093333334 = sum of:
            0.093333334 = weight(_text_:m.a in 3999) [ClassicSimilarity], result of:
              0.093333334 = score(doc=3999,freq=2.0), product of:
                0.27376357 = queryWeight, product of:
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.044359796 = queryNorm
                0.3409268 = fieldWeight in 3999, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3999)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  12. Su, Y.; Han, L.-F.: ¬A new literature growth model : variable exponential growth law of literature (1998) 0.02
    0.021249054 = product of:
      0.042498108 = sum of:
        0.042498108 = product of:
          0.084996216 = sum of:
            0.084996216 = weight(_text_:22 in 3690) [ClassicSimilarity], result of:
              0.084996216 = score(doc=3690,freq=4.0), product of:
                0.15534045 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044359796 = queryNorm
                0.54716086 = fieldWeight in 3690, 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=3690)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 5.1999 19:22:35
  13. Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001) 0.02
    0.021249054 = product of:
      0.042498108 = sum of:
        0.042498108 = product of:
          0.084996216 = sum of:
            0.084996216 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
              0.084996216 = score(doc=3925,freq=4.0), product of:
                0.15534045 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044359796 = 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
  14. Bookstein, A.: Informetric distributions : I. Unified overview (1990) 0.02
    0.02103549 = product of:
      0.04207098 = sum of:
        0.04207098 = product of:
          0.08414196 = sum of:
            0.08414196 = weight(_text_:22 in 6902) [ClassicSimilarity], result of:
              0.08414196 = score(doc=6902,freq=2.0), product of:
                0.15534045 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044359796 = queryNorm
                0.5416616 = fieldWeight in 6902, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.109375 = fieldNorm(doc=6902)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 7.2006 18:55:29
  15. Bookstein, A.: Informetric distributions : II. Resilience to ambiguity (1990) 0.02
    0.02103549 = product of:
      0.04207098 = sum of:
        0.04207098 = product of:
          0.08414196 = sum of:
            0.08414196 = weight(_text_:22 in 4689) [ClassicSimilarity], result of:
              0.08414196 = score(doc=4689,freq=2.0), product of:
                0.15534045 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044359796 = queryNorm
                0.5416616 = fieldWeight in 4689, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4689)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 7.2006 18:55:55
  16. Lewison, G.: ¬The work of the Bibliometrics Research Group (City University) and associates (2005) 0.02
    0.01803042 = product of:
      0.03606084 = sum of:
        0.03606084 = product of:
          0.07212168 = sum of:
            0.07212168 = weight(_text_:22 in 4890) [ClassicSimilarity], result of:
              0.07212168 = score(doc=4890,freq=2.0), product of:
                0.15534045 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044359796 = queryNorm
                0.46428138 = fieldWeight in 4890, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.09375 = fieldNorm(doc=4890)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    20. 1.2007 17:02:22
  17. Marx, W.; Bornmann, L.: On the problems of dealing with bibliometric data (2014) 0.02
    0.01803042 = product of:
      0.03606084 = sum of:
        0.03606084 = product of:
          0.07212168 = sum of:
            0.07212168 = weight(_text_:22 in 1239) [ClassicSimilarity], result of:
              0.07212168 = score(doc=1239,freq=2.0), product of:
                0.15534045 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044359796 = queryNorm
                0.46428138 = fieldWeight in 1239, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.09375 = fieldNorm(doc=1239)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    18. 3.2014 19:13:22
  18. Raan, A.F.J. van: Statistical properties of bibliometric indicators : research group indicator distributions and correlations (2006) 0.01
    0.012749433 = product of:
      0.025498865 = sum of:
        0.025498865 = product of:
          0.05099773 = sum of:
            0.05099773 = weight(_text_:22 in 5275) [ClassicSimilarity], result of:
              0.05099773 = score(doc=5275,freq=4.0), product of:
                0.15534045 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044359796 = queryNorm
                0.32829654 = fieldWeight in 5275, 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=5275)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 7.2006 16:20:22
  19. Larivière, V.; Gingras, Y.; Archambault, E.: ¬The decline in the concentration of citations, 1900-2007 (2009) 0.01
    0.012749433 = product of:
      0.025498865 = sum of:
        0.025498865 = product of:
          0.05099773 = sum of:
            0.05099773 = weight(_text_:22 in 2763) [ClassicSimilarity], result of:
              0.05099773 = score(doc=2763,freq=4.0), product of:
                0.15534045 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044359796 = 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
  20. Li, T.-C.: Reference sources in periodicals : research note (1995) 0.01
    0.01202028 = product of:
      0.02404056 = sum of:
        0.02404056 = product of:
          0.04808112 = sum of:
            0.04808112 = weight(_text_:22 in 5092) [ClassicSimilarity], result of:
              0.04808112 = score(doc=5092,freq=2.0), product of:
                0.15534045 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044359796 = queryNorm
                0.30952093 = fieldWeight in 5092, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0625 = fieldNorm(doc=5092)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    Presents a list of 53 periodicals in 22 subject fields which regularly provide bibliographies of theses, research in progress and patents in their particular subject field. The fields of business, economics, history and literature have most periodical listings of dissertations and theses. Also lists 63 periodicals in 25 sub-disciplines which provide rankings or ratings. Rankings and ratings information predominates in the fields of business, sports and games, finance and banking, and library and information science

Authors

Years