Search (120 results, page 1 of 6)

  • × theme_ss:"Informetrie"
  1. Walters, W.H.; Linvill, A.C.: Bibliographic index coverage of open-access journals in six subject areas (2011) 0.09 
    0.09220417 = product of:
  0.18440834 = sum of:
    0.18440834 = sum of:
      0.1551218 = weight(_text_:w.h in 4635) [ClassicSimilarity], result of:
        0.1551218 = score(doc=4635,freq=2.0), product of:
          0.34841785 = queryWeight, product of:
            8.059301 = idf(docFreq=37, maxDocs=44218)
            0.043231767 = queryNorm
          0.44521773 = fieldWeight in 4635, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            8.059301 = idf(docFreq=37, maxDocs=44218)
            0.0390625 = fieldNorm(doc=4635)
      0.02928654 = weight(_text_:22 in 4635) [ClassicSimilarity], result of:
        0.02928654 = score(doc=4635,freq=2.0), product of:
          0.15139028 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.043231767 = queryNorm
          0.19345059 = fieldWeight in 4635, 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=4635)
  0.5 = coord(1/2)
    Abstract
    We investigate the extent to which open-access (OA) journals and articles in biology, computer science, economics, history, medicine, and psychology are indexed in each of 11 bibliographic databases. We also look for variations in index coverage by journal subject, journal size, publisher type, publisher size, date of first OA issue, region of publication, language of publication, publication fee, and citation impact factor. Two databases, Biological Abstracts and PubMed, provide very good coverage of the OA journal literature, indexing 60 to 63% of all OA articles in their disciplines. Five databases provide moderately good coverage (22-41%), and four provide relatively poor coverage (0-12%). OA articles in biology journals, English-only journals, high-impact journals, and journals that charge publication fees of $1,000 or more are especially likely to be indexed. Conversely, articles from OA publishers in Africa, Asia, or Central/South America are especially unlikely to be indexed. Four of the 11 databases index commercially published articles at a substantially higher rate than articles published by universities, scholarly societies, nonprofit publishers, or governments. Finally, three databases-EBSCO Academic Search Complete, ProQuest Research Library, and Wilson OmniFile-provide less comprehensive coverage of OA articles than of articles in comparable subscription journals.
  2. Walters, W.H.: Google Scholar coverage of a multidisciplinary field (2007) 0.05 
    0.046536535 = product of:
  0.09307307 = sum of:
    0.09307307 = product of:
      0.18614614 = sum of:
        0.18614614 = weight(_text_:w.h in 928) [ClassicSimilarity], result of:
          0.18614614 = score(doc=928,freq=2.0), product of:
            0.34841785 = queryWeight, product of:
              8.059301 = idf(docFreq=37, maxDocs=44218)
              0.043231767 = queryNorm
            0.5342612 = fieldWeight in 928, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              8.059301 = idf(docFreq=37, maxDocs=44218)
              0.046875 = fieldNorm(doc=928)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  3. Walters, W.H.; Wilder, E.I.: Bibliographic index coverage of a multidisciplinary field (2003) 0.04 
    0.03878045 = product of:
  0.0775609 = sum of:
    0.0775609 = product of:
      0.1551218 = sum of:
        0.1551218 = weight(_text_:w.h in 2114) [ClassicSimilarity], result of:
          0.1551218 = score(doc=2114,freq=2.0), product of:
            0.34841785 = queryWeight, product of:
              8.059301 = idf(docFreq=37, maxDocs=44218)
              0.043231767 = queryNorm
            0.44521773 = fieldWeight in 2114, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              8.059301 = idf(docFreq=37, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2114)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  4. Walters, W.H.; Wilder, E.I.: Disciplinary, national, and departmental contributions to the literature of library and information science, 2007-2012 (2016) 0.04 
    0.03878045 = product of:
  0.0775609 = sum of:
    0.0775609 = product of:
      0.1551218 = sum of:
        0.1551218 = weight(_text_:w.h in 2940) [ClassicSimilarity], result of:
          0.1551218 = score(doc=2940,freq=2.0), product of:
            0.34841785 = queryWeight, product of:
              8.059301 = idf(docFreq=37, maxDocs=44218)
              0.043231767 = queryNorm
            0.44521773 = fieldWeight in 2940, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              8.059301 = idf(docFreq=37, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2940)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  5. Nicholls, P.T.: Empirical validation of Lotka's law (1986) 0.02 
    0.023429232 = product of:
  0.046858463 = sum of:
    0.046858463 = product of:
      0.09371693 = sum of:
        0.09371693 = weight(_text_:22 in 5509) [ClassicSimilarity], result of:
          0.09371693 = score(doc=5509,freq=2.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = 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
  6. Nicolaisen, J.: Citation analysis (2007) 0.02 
    0.023429232 = product of:
  0.046858463 = sum of:
    0.046858463 = product of:
      0.09371693 = sum of:
        0.09371693 = weight(_text_:22 in 6091) [ClassicSimilarity], result of:
          0.09371693 = score(doc=6091,freq=2.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = 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
  7. Fiala, J.: Information flood : fiction and reality (1987) 0.02 
    0.023429232 = product of:
  0.046858463 = sum of:
    0.046858463 = product of:
      0.09371693 = sum of:
        0.09371693 = weight(_text_:22 in 1080) [ClassicSimilarity], result of:
          0.09371693 = score(doc=1080,freq=2.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = 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
  8. Su, Y.; Han, L.-F.: ¬A new literature growth model : variable exponential growth law of literature (1998) 0.02 
    0.02070871 = product of:
  0.04141742 = sum of:
    0.04141742 = product of:
      0.08283484 = sum of:
        0.08283484 = weight(_text_:22 in 3690) [ClassicSimilarity], result of:
          0.08283484 = score(doc=3690,freq=4.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = 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
  9. Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001) 0.02 
    0.02070871 = product of:
  0.04141742 = sum of:
    0.04141742 = product of:
      0.08283484 = sum of:
        0.08283484 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
          0.08283484 = score(doc=3925,freq=4.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = 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
  10. Diodato, V.: Dictionary of bibliometrics (1994) 0.02 
    0.020500576 = product of:
  0.041001152 = sum of:
    0.041001152 = product of:
      0.082002304 = sum of:
        0.082002304 = weight(_text_:22 in 5666) [ClassicSimilarity], result of:
          0.082002304 = score(doc=5666,freq=2.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = 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)
  11. Bookstein, A.: Informetric distributions : I. Unified overview (1990) 0.02 
    0.020500576 = product of:
  0.041001152 = sum of:
    0.041001152 = product of:
      0.082002304 = sum of:
        0.082002304 = weight(_text_:22 in 6902) [ClassicSimilarity], result of:
          0.082002304 = score(doc=6902,freq=2.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = 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
  12. Bookstein, A.: Informetric distributions : II. Resilience to ambiguity (1990) 0.02 
    0.020500576 = product of:
  0.041001152 = sum of:
    0.041001152 = product of:
      0.082002304 = sum of:
        0.082002304 = weight(_text_:22 in 4689) [ClassicSimilarity], result of:
          0.082002304 = score(doc=4689,freq=2.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = 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
  13. Lewison, G.: ¬The work of the Bibliometrics Research Group (City University) and associates (2005) 0.02 
    0.017571922 = product of:
  0.035143845 = sum of:
    0.035143845 = product of:
      0.07028769 = sum of:
        0.07028769 = weight(_text_:22 in 4890) [ClassicSimilarity], result of:
          0.07028769 = score(doc=4890,freq=2.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = 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
  14. Marx, W.; Bornmann, L.: On the problems of dealing with bibliometric data (2014) 0.02 
    0.017571922 = product of:
  0.035143845 = sum of:
    0.035143845 = product of:
      0.07028769 = sum of:
        0.07028769 = weight(_text_:22 in 1239) [ClassicSimilarity], result of:
          0.07028769 = score(doc=1239,freq=2.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = 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
  15. Raan, A.F.J. van: Statistical properties of bibliometric indicators : research group indicator distributions and correlations (2006) 0.01 
    0.012425227 = product of:
  0.024850454 = sum of:
    0.024850454 = product of:
      0.04970091 = sum of:
        0.04970091 = weight(_text_:22 in 5275) [ClassicSimilarity], result of:
          0.04970091 = score(doc=5275,freq=4.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = 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
  16. Larivière, V.; Gingras, Y.; Archambault, E.: ¬The decline in the concentration of citations, 1900-2007 (2009) 0.01 
    0.012425227 = product of:
  0.024850454 = sum of:
    0.024850454 = product of:
      0.04970091 = sum of:
        0.04970091 = weight(_text_:22 in 2763) [ClassicSimilarity], result of:
          0.04970091 = score(doc=2763,freq=4.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = 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
  17. Li, T.-C.: Reference sources in periodicals : research note (1995) 0.01 
    0.011714616 = product of:
  0.023429232 = sum of:
    0.023429232 = product of:
      0.046858463 = sum of:
        0.046858463 = weight(_text_:22 in 5092) [ClassicSimilarity], result of:
          0.046858463 = score(doc=5092,freq=2.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = 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
  18. Pichappan, P.; Sangaranachiyar, S.: Ageing approach to scientific eponyms (1996) 0.01 
    0.011714616 = product of:
  0.023429232 = sum of:
    0.023429232 = product of:
      0.046858463 = sum of:
        0.046858463 = weight(_text_:22 in 80) [ClassicSimilarity], result of:
          0.046858463 = score(doc=80,freq=2.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = 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
  19. Mommoh, O.M.: Subject analysis of post-graduate theses in library, archival and information science at Ahmadu Bello University, Zaria (1995/96) 0.01 
    0.011714616 = product of:
  0.023429232 = sum of:
    0.023429232 = product of:
      0.046858463 = sum of:
        0.046858463 = weight(_text_:22 in 673) [ClassicSimilarity], result of:
          0.046858463 = score(doc=673,freq=2.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = 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
  20. Chongde, W.; Zhe, W.: Evaluation of the models for Bradford's law (1998) 0.01 
    0.011714616 = product of:
  0.023429232 = sum of:
    0.023429232 = product of:
      0.046858463 = sum of:
        0.046858463 = weight(_text_:22 in 3688) [ClassicSimilarity], result of:
          0.046858463 = score(doc=3688,freq=2.0), product of:
            0.15139028 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043231767 = queryNorm
            0.30952093 = fieldWeight in 3688, 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=3688)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 5.1999 19:12:28

Authors

Years

Languages

  • e 111
  • d 8
  • ro 1
  • More… Less…

Types

  • a 118
  • m 2
  • el 1
  • s 1
  • More… Less…

Themes

Subjects

Classifications