Search (122 results, page 1 of 7)

  • × theme_ss:"Informetrie"
  1. Hirsch, J.E.: ¬An index to quantify an individual's scientific research output that takes into account the effect of multiple coauthorship (2010) 0.04 
    0.044954155 = product of:
  0.08990831 = sum of:
    0.08990831 = product of:
      0.17981662 = sum of:
        0.17981662 = weight(_text_:j.e in 778) [ClassicSimilarity], result of:
          0.17981662 = score(doc=778,freq=2.0), product of:
            0.29921734 = queryWeight, product of:
              6.7990475 = idf(docFreq=133, maxDocs=44218)
              0.044008717 = queryNorm
            0.60095656 = fieldWeight in 778, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.7990475 = idf(docFreq=133, maxDocs=44218)
              0.0625 = fieldNorm(doc=778)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  2. Hirsch, J.E.: ¬An index to quantify an individual's scientific research output (2005) 0.04 
    0.044954155 = product of:
  0.08990831 = sum of:
    0.08990831 = product of:
      0.17981662 = sum of:
        0.17981662 = weight(_text_:j.e in 785) [ClassicSimilarity], result of:
          0.17981662 = score(doc=785,freq=2.0), product of:
            0.29921734 = queryWeight, product of:
              6.7990475 = idf(docFreq=133, maxDocs=44218)
              0.044008717 = queryNorm
            0.60095656 = fieldWeight in 785, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.7990475 = idf(docFreq=133, maxDocs=44218)
              0.0625 = fieldNorm(doc=785)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  3. Schreiber, M.: ¬A case study of the modified Hirsch index hm accounting for multiple coauthors (2009) 0.04 
    0.03933489 = product of:
  0.07866978 = sum of:
    0.07866978 = product of:
      0.15733956 = sum of:
        0.15733956 = weight(_text_:j.e in 2858) [ClassicSimilarity], result of:
          0.15733956 = score(doc=2858,freq=2.0), product of:
            0.29921734 = queryWeight, product of:
              6.7990475 = idf(docFreq=133, maxDocs=44218)
              0.044008717 = queryNorm
            0.525837 = fieldWeight in 2858, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.7990475 = idf(docFreq=133, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2858)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    J.E. Hirsch (2005) introduced the h-index to quantify an individual's scientific research output by the largest number h of a scientist's papers, that received at least h citations. This so-called Hirsch index can be easily modified to take multiple coauthorship into account by counting the papers fractionally according to (the inverse of) the number of authors. I have worked out 26 empirical cases of physicists to illustrate the effect of this modification. Although the correlation between the original and the modified Hirsch index is relatively strong, the arrangement of the datasets is significantly different depending on whether they are put into order according to the values of either the original or the modified index.
  4. Arencibia-Jorge, R.; Barrios-Almaguer, I.; Fernández-Hernández, S.; Carvajal-Espino, R.: Applying successive H indices in the institutional evaluation : a case study (2008) 0.03 
    0.033715617 = product of:
  0.067431234 = sum of:
    0.067431234 = product of:
      0.13486247 = sum of:
        0.13486247 = weight(_text_:j.e in 1348) [ClassicSimilarity], result of:
          0.13486247 = score(doc=1348,freq=2.0), product of:
            0.29921734 = queryWeight, product of:
              6.7990475 = idf(docFreq=133, maxDocs=44218)
              0.044008717 = queryNorm
            0.45071742 = fieldWeight in 1348, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.7990475 = idf(docFreq=133, maxDocs=44218)
              0.046875 = fieldNorm(doc=1348)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    The present work shows the applying of successive H indices in the evaluation of a scientific institution, using the researcher-department-institution hierarchy as level of aggregation. The scientific production covered by the Web of Science of the researcher's staff from the Cuban National Scientific Research Center, during the period 2001-2005, was studied. The Hirsch index (h-index; J.E. Hirsch, 2005) was employed to calculate the individual performance of the staff, using the g-index created by Leo Egghe (2006) and the A-index developed by Jin Bi-Hui (2006) as complementary indicators. The successive H indices proposed by András Schubert (2007) were used to determine the scientific performance of each department as well as the general performance of the institution. The possible advantages of the method for the institutional evaluation processes were exposed.
  5. Schreiber, M.: ¬An empirical investigation of the g-index for 26 physicists in comparison with the h-index, the A-index, and the R-index (2008) 0.03 
    0.028096346 = product of:
  0.056192692 = sum of:
    0.056192692 = product of:
      0.112385385 = sum of:
        0.112385385 = weight(_text_:j.e in 1968) [ClassicSimilarity], result of:
          0.112385385 = score(doc=1968,freq=2.0), product of:
            0.29921734 = queryWeight, product of:
              6.7990475 = idf(docFreq=133, maxDocs=44218)
              0.044008717 = queryNorm
            0.37559783 = fieldWeight in 1968, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.7990475 = idf(docFreq=133, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1968)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    J.E. Hirsch (2005) introduced the h-index to quantify an individual's scientific research output by the largest number h of a scientist's papers that received at least h citations. To take into account the highly skewed frequency distribution of citations, L. Egghe (2006a) proposed the g-index as an improvement of the h-index. I have worked out 26 practical cases of physicists from the Institute of Physics at Chemnitz University of Technology, and compare the h and g values in this study. It is demonstrated that the g-index discriminates better between different citation patterns. This also can be achieved by evaluating B.H. Jin's (2006) A-index, which reflects the average number of citations in the h-core, and interpreting it in conjunction with the h-index. h and A can be combined into the R-index to measure the h-core's citation intensity. I also have determined the A and R values for the 26 datasets. For a better comparison, I utilize interpolated indices. The correlations between the various indices as well as with the total number of papers and the highest citation counts are discussed. The largest Pearson correlation coefficient is found between g and R. Although the correlation between g and h is relatively strong, the arrangement of the datasets is significantly different depending on whether they are put into order according to the values of either h or g.
  6. Nicholls, P.T.: Empirical validation of Lotka's law (1986) 0.02 
    0.023850294 = product of:
  0.047700588 = sum of:
    0.047700588 = product of:
      0.095401175 = sum of:
        0.095401175 = weight(_text_:22 in 5509) [ClassicSimilarity], result of:
          0.095401175 = score(doc=5509,freq=2.0), product of:
            0.15411103 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044008717 = 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 
    0.023850294 = product of:
  0.047700588 = sum of:
    0.047700588 = product of:
      0.095401175 = sum of:
        0.095401175 = weight(_text_:22 in 6091) [ClassicSimilarity], result of:
          0.095401175 = score(doc=6091,freq=2.0), product of:
            0.15411103 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044008717 = 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 
    0.023850294 = product of:
  0.047700588 = sum of:
    0.047700588 = product of:
      0.095401175 = sum of:
        0.095401175 = weight(_text_:22 in 1080) [ClassicSimilarity], result of:
          0.095401175 = score(doc=1080,freq=2.0), product of:
            0.15411103 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044008717 = 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. Su, Y.; Han, L.-F.: ¬A new literature growth model : variable exponential growth law of literature (1998) 0.02 
    0.021080881 = product of:
  0.042161763 = sum of:
    0.042161763 = product of:
      0.084323525 = sum of:
        0.084323525 = weight(_text_:22 in 3690) [ClassicSimilarity], result of:
          0.084323525 = score(doc=3690,freq=4.0), product of:
            0.15411103 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044008717 = 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
  10. Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001) 0.02 
    0.021080881 = product of:
  0.042161763 = sum of:
    0.042161763 = product of:
      0.084323525 = sum of:
        0.084323525 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
          0.084323525 = score(doc=3925,freq=4.0), product of:
            0.15411103 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044008717 = 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
  11. Diodato, V.: Dictionary of bibliometrics (1994) 0.02 
    0.020869007 = product of:
  0.041738015 = sum of:
    0.041738015 = product of:
      0.08347603 = sum of:
        0.08347603 = weight(_text_:22 in 5666) [ClassicSimilarity], result of:
          0.08347603 = score(doc=5666,freq=2.0), product of:
            0.15411103 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044008717 = queryNorm
            0.5416616 = fieldWeight in 5666, 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=5666)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Footnote
    Rez. in: Journal of library and information science 22(1996) no.2, S.116-117 (L.C. Smith)
  12. Bookstein, A.: Informetric distributions : I. Unified overview (1990) 0.02 
    0.020869007 = product of:
  0.041738015 = sum of:
    0.041738015 = product of:
      0.08347603 = sum of:
        0.08347603 = weight(_text_:22 in 6902) [ClassicSimilarity], result of:
          0.08347603 = score(doc=6902,freq=2.0), product of:
            0.15411103 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044008717 = 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
  13. Bookstein, A.: Informetric distributions : II. Resilience to ambiguity (1990) 0.02 
    0.020869007 = product of:
  0.041738015 = sum of:
    0.041738015 = product of:
      0.08347603 = sum of:
        0.08347603 = weight(_text_:22 in 4689) [ClassicSimilarity], result of:
          0.08347603 = score(doc=4689,freq=2.0), product of:
            0.15411103 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044008717 = 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
  14. Lewison, G.: ¬The work of the Bibliometrics Research Group (City University) and associates (2005) 0.02 
    0.01788772 = product of:
  0.03577544 = sum of:
    0.03577544 = product of:
      0.07155088 = sum of:
        0.07155088 = weight(_text_:22 in 4890) [ClassicSimilarity], result of:
          0.07155088 = score(doc=4890,freq=2.0), product of:
            0.15411103 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044008717 = 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
  15. Marx, W.; Bornmann, L.: On the problems of dealing with bibliometric data (2014) 0.02 
    0.01788772 = product of:
  0.03577544 = sum of:
    0.03577544 = product of:
      0.07155088 = sum of:
        0.07155088 = weight(_text_:22 in 1239) [ClassicSimilarity], result of:
          0.07155088 = score(doc=1239,freq=2.0), product of:
            0.15411103 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044008717 = 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
  16. Raan, A.F.J. van: Statistical properties of bibliometric indicators : research group indicator distributions and correlations (2006) 0.01 
    0.012648529 = product of:
  0.025297059 = sum of:
    0.025297059 = product of:
      0.050594117 = sum of:
        0.050594117 = weight(_text_:22 in 5275) [ClassicSimilarity], result of:
          0.050594117 = score(doc=5275,freq=4.0), product of:
            0.15411103 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044008717 = 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
  17. Larivière, V.; Gingras, Y.; Archambault, E.: ¬The decline in the concentration of citations, 1900-2007 (2009) 0.01 
    0.012648529 = product of:
  0.025297059 = sum of:
    0.025297059 = product of:
      0.050594117 = sum of:
        0.050594117 = weight(_text_:22 in 2763) [ClassicSimilarity], result of:
          0.050594117 = score(doc=2763,freq=4.0), product of:
            0.15411103 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044008717 = 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
  18. Li, T.-C.: Reference sources in periodicals : research note (1995) 0.01 
    0.011925147 = product of:
  0.023850294 = sum of:
    0.023850294 = product of:
      0.047700588 = sum of:
        0.047700588 = weight(_text_:22 in 5092) [ClassicSimilarity], result of:
          0.047700588 = score(doc=5092,freq=2.0), product of:
            0.15411103 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044008717 = 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
  19. Pichappan, P.; Sangaranachiyar, S.: Ageing approach to scientific eponyms (1996) 0.01 
    0.011925147 = product of:
  0.023850294 = sum of:
    0.023850294 = product of:
      0.047700588 = sum of:
        0.047700588 = weight(_text_:22 in 80) [ClassicSimilarity], result of:
          0.047700588 = score(doc=80,freq=2.0), product of:
            0.15411103 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044008717 = queryNorm
            0.30952093 = fieldWeight in 80, 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=80)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Footnote
    Report presented at the 16th National Indian Association of Special Libraries and Information Centres Seminar Special Interest Group Meeting on Informatrics in Bombay, 19-22 Dec 94
  20. Mommoh, O.M.: Subject analysis of post-graduate theses in library, archival and information science at Ahmadu Bello University, Zaria (1995/96) 0.01 
    0.011925147 = product of:
  0.023850294 = sum of:
    0.023850294 = product of:
      0.047700588 = sum of:
        0.047700588 = weight(_text_:22 in 673) [ClassicSimilarity], result of:
          0.047700588 = score(doc=673,freq=2.0), product of:
            0.15411103 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044008717 = queryNorm
            0.30952093 = fieldWeight in 673, 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=673)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Library focus. 13/14(1995/96), S.22-25

Authors

Years

Languages

  • e 113
  • d 8
  • ro 1
  • More… Less…

Types

  • a 120
  • m 2
  • el 1
  • s 1
  • More… Less…

Themes

Subjects

Classifications