Search (338 results, page 1 of 17)

  • × theme_ss:"Informetrie"
  1. Lewison, G.: ¬The work of the Bibliometrics Research Group (City University) and associates (2005) 0.08 
    0.0795922 = product of:
  0.1591844 = sum of:
    0.1591844 = sum of:
      0.074122764 = weight(_text_:20 in 4890) [ClassicSimilarity], result of:
        0.074122764 = score(doc=4890,freq=4.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.5154039 = fieldWeight in 4890, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.09375 = fieldNorm(doc=4890)
      0.08506163 = weight(_text_:22 in 4890) [ClassicSimilarity], result of:
        0.08506163 = score(doc=4890,freq=2.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = 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)
    Date
    12. 3.2001 11:34:20
    20. 1.2007 17:02:22
  2. Li, T.-C.: Reference sources in periodicals : research note (1995) 0.05 
    0.04582478 = product of:
  0.09164956 = sum of:
    0.09164956 = sum of:
      0.034941807 = weight(_text_:20 in 5092) [ClassicSimilarity], result of:
        0.034941807 = score(doc=5092,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.24296375 = fieldWeight in 5092, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.0625 = fieldNorm(doc=5092)
      0.05670776 = weight(_text_:22 in 5092) [ClassicSimilarity], result of:
        0.05670776 = score(doc=5092,freq=2.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = 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)
    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
    Source
    Journal of information; communication; and library science. 2(1995) no.2, S.20-28
  3. Rostaing, H.; Barts, N.; Léveillé, V.: Bibliometrics: representation instrument of the multidisciplinary positioning of a scientific area : Implementation for an Advisory Scientific Committee (2007) 0.05 
    0.04582478 = product of:
  0.09164956 = sum of:
    0.09164956 = sum of:
      0.034941807 = weight(_text_:20 in 1144) [ClassicSimilarity], result of:
        0.034941807 = score(doc=1144,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.24296375 = fieldWeight in 1144, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.0625 = fieldNorm(doc=1144)
      0.05670776 = weight(_text_:22 in 1144) [ClassicSimilarity], result of:
        0.05670776 = score(doc=1144,freq=2.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = queryNorm
          0.30952093 = fieldWeight in 1144, 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=1144)
  0.5 = coord(1/2)
    Date
    30.12.2007 11:22:39
    Source
    ¬La interdisciplinariedad y la transdisciplinariedad en la organización del conocimiento científico : actas del VIII Congreso ISKO-España, León, 18, 19 y 20 de Abril de 2007 : Interdisciplinarity and transdisciplinarity in the organization of scientific knowledge. Ed.: B. Rodriguez Bravo u. M.L Alvite Diez
  4. Ohly, P.: Dimensions of globality : a bibliometric analysis (2016) 0.05 
    0.04582478 = product of:
  0.09164956 = sum of:
    0.09164956 = sum of:
      0.034941807 = weight(_text_:20 in 4942) [ClassicSimilarity], result of:
        0.034941807 = score(doc=4942,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.24296375 = fieldWeight in 4942, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.0625 = fieldNorm(doc=4942)
      0.05670776 = weight(_text_:22 in 4942) [ClassicSimilarity], result of:
        0.05670776 = score(doc=4942,freq=2.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = queryNorm
          0.30952093 = fieldWeight in 4942, 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=4942)
  0.5 = coord(1/2)
    Date
    20. 1.2019 11:22:31
  5. Raan, A.F.J. van: Statistical properties of bibliometric indicators : research group indicator distributions and correlations (2006) 0.04 
    0.043177012 = product of:
  0.086354025 = sum of:
    0.086354025 = sum of:
      0.026206357 = weight(_text_:20 in 5275) [ClassicSimilarity], result of:
        0.026206357 = score(doc=5275,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.18222281 = fieldWeight in 5275, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.046875 = fieldNorm(doc=5275)
      0.060147665 = weight(_text_:22 in 5275) [ClassicSimilarity], result of:
        0.060147665 = score(doc=5275,freq=4.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = 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)
    Date
    22. 7.2006 16:20:22
  6. Larivière, V.; Gingras, Y.; Archambault, E.: ¬The decline in the concentration of citations, 1900-2007 (2009) 0.04 
    0.043177012 = product of:
  0.086354025 = sum of:
    0.086354025 = sum of:
      0.026206357 = weight(_text_:20 in 2763) [ClassicSimilarity], result of:
        0.026206357 = score(doc=2763,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.18222281 = fieldWeight in 2763, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.046875 = fieldNorm(doc=2763)
      0.060147665 = weight(_text_:22 in 2763) [ClassicSimilarity], result of:
        0.060147665 = score(doc=2763,freq=4.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = 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)
    Abstract
    This article challenges recent research (Evans, 2008) reporting that the concentration of cited scientific literature increases with the online availability of articles and journals. Using Thomson Reuters' Web of Science, the present article analyses changes in the concentration of citations received (2- and 5-year citation windows) by papers published between 1900 and 2005. Three measures of concentration are used: the percentage of papers that received at least one citation (cited papers); the percentage of papers needed to account for 20%, 50%, and 80% of the citations; and the Herfindahl-Hirschman index (HHI). These measures are used for four broad disciplines: natural sciences and engineering, medical fields, social sciences, and the humanities. All these measures converge and show that, contrary to what was reported by Evans, the dispersion of citations is actually increasing.
    Date
    22. 3.2009 19:22:35
  7. Zhang, Y.: ¬The impact of Internet-based electronic resources on formal scholarly communication in the area of library and information science : a citation analysis (1998) 0.04 
    0.03598084 = product of:
  0.07196168 = sum of:
    0.07196168 = sum of:
      0.02183863 = weight(_text_:20 in 2808) [ClassicSimilarity], result of:
        0.02183863 = score(doc=2808,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.15185234 = fieldWeight in 2808, 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=2808)
      0.05012305 = weight(_text_:22 in 2808) [ClassicSimilarity], result of:
        0.05012305 = score(doc=2808,freq=4.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = queryNorm
          0.27358043 = fieldWeight in 2808, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0390625 = fieldNorm(doc=2808)
  0.5 = coord(1/2)
    Date
    5. 4.1996 20:01:47
    30. 1.1999 17:22:22
  8. Yan, E.: Finding knowledge paths among scientific disciplines (2014) 0.04 
    0.03598084 = product of:
  0.07196168 = sum of:
    0.07196168 = sum of:
      0.02183863 = weight(_text_:20 in 1534) [ClassicSimilarity], result of:
        0.02183863 = score(doc=1534,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.15185234 = fieldWeight in 1534, 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=1534)
      0.05012305 = weight(_text_:22 in 1534) [ClassicSimilarity], result of:
        0.05012305 = score(doc=1534,freq=4.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = queryNorm
          0.27358043 = fieldWeight in 1534, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0390625 = fieldNorm(doc=1534)
  0.5 = coord(1/2)
    Date
    26.10.2014 20:22:22
  9. Zhu, Q.; Kong, X.; Hong, S.; Li, J.; He, Z.: Global ontology research progress : a bibliometric analysis (2015) 0.04 
    0.03598084 = product of:
  0.07196168 = sum of:
    0.07196168 = sum of:
      0.02183863 = weight(_text_:20 in 2590) [ClassicSimilarity], result of:
        0.02183863 = score(doc=2590,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.15185234 = fieldWeight in 2590, 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=2590)
      0.05012305 = weight(_text_:22 in 2590) [ClassicSimilarity], result of:
        0.05012305 = score(doc=2590,freq=4.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = queryNorm
          0.27358043 = fieldWeight in 2590, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0390625 = fieldNorm(doc=2590)
  0.5 = coord(1/2)
    Date
    20. 1.2015 18:30:22
    17. 9.2018 18:22:23
  10. Leydesdorff, L.: Can networks of journal-journal citations be used as indicators of change in the social sciences? (2003) 0.03 
    0.034368586 = product of:
  0.06873717 = sum of:
    0.06873717 = sum of:
      0.026206357 = weight(_text_:20 in 4460) [ClassicSimilarity], result of:
        0.026206357 = score(doc=4460,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.18222281 = fieldWeight in 4460, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.046875 = fieldNorm(doc=4460)
      0.042530816 = weight(_text_:22 in 4460) [ClassicSimilarity], result of:
        0.042530816 = score(doc=4460,freq=2.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = queryNorm
          0.23214069 = fieldWeight in 4460, 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=4460)
  0.5 = coord(1/2)
    Date
    10. 3.1997 20:31:13
    6.11.2005 19:02:22
  11. Kreider, J.: ¬The correlation of local citation data with citation data from Journal Citation Reports (1999) 0.03 
    0.034368586 = product of:
  0.06873717 = sum of:
    0.06873717 = sum of:
      0.026206357 = weight(_text_:20 in 102) [ClassicSimilarity], result of:
        0.026206357 = score(doc=102,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.18222281 = fieldWeight in 102, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.046875 = fieldNorm(doc=102)
      0.042530816 = weight(_text_:22 in 102) [ClassicSimilarity], result of:
        0.042530816 = score(doc=102,freq=2.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = queryNorm
          0.23214069 = fieldWeight in 102, 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=102)
  0.5 = coord(1/2)
    Abstract
    University librarians continue to face the difficult task of determining which journals remain crucial for their collections during these times of static financial resources and escalating journal costs. One evaluative tool, Journal Citation Reports (JCR), recently has become available on CD-ROM, making it simpler for librarians to use its citation data as input for ranking journals. But many librarians remain unconvinced that the global citation data from the JCR bears enough correspondence to their local situation to be useful. In this project, I explore the correlation between global citation data available from JCR with local citation data generated specifically for the University of British Columbia, for 20 subject fields in the sciences and social sciences. The significant correlations obtained in this study suggest that large research-oriented university libraries could consider substituting global citation data for local citation data when evaluating their journals, with certain cautions.
    Date
    10. 9.2000 17:38:22
  12. Leydesdorff, L.; Sun, Y.: National and international dimensions of the Triple Helix in Japan : university-industry-government versus international coauthorship relations (2009) 0.03 
    0.034368586 = product of:
  0.06873717 = sum of:
    0.06873717 = sum of:
      0.026206357 = weight(_text_:20 in 2761) [ClassicSimilarity], result of:
        0.026206357 = score(doc=2761,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.18222281 = fieldWeight in 2761, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.046875 = fieldNorm(doc=2761)
      0.042530816 = weight(_text_:22 in 2761) [ClassicSimilarity], result of:
        0.042530816 = score(doc=2761,freq=2.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = queryNorm
          0.23214069 = fieldWeight in 2761, 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=2761)
  0.5 = coord(1/2)
    Date
    22. 3.2009 19:07:20
  13. Albarrán, P.; Ruiz-Castillo, J.: References made and citations received by scientific articles (2011) 0.03 
    0.034368586 = product of:
  0.06873717 = sum of:
    0.06873717 = sum of:
      0.026206357 = weight(_text_:20 in 4185) [ClassicSimilarity], result of:
        0.026206357 = score(doc=4185,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.18222281 = fieldWeight in 4185, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.046875 = fieldNorm(doc=4185)
      0.042530816 = weight(_text_:22 in 4185) [ClassicSimilarity], result of:
        0.042530816 = score(doc=4185,freq=2.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = queryNorm
          0.23214069 = fieldWeight in 4185, 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=4185)
  0.5 = coord(1/2)
    Abstract
    This article studies massive evidence about references made and citations received after a 5-year citation window by 3.7 million articles published in 1998 to 2002 in 22 scientific fields. We find that the distributions of references made and citations received share a number of basic features across sciences. Reference distributions are rather skewed to the right while citation distributions are even more highly skewed: The mean is about 20 percentage points to the right of the median, and articles with a remarkable or an outstanding number of citations represent about 9% of the total. Moreover, the existence of a power law representing the upper tail of citation distributions cannot be rejected in 17 fields whose articles represent 74.7% of the total. Contrary to the evidence in other contexts, the value of the scale parameter is above 3.5 in 13 of the 17 cases. Finally, power laws are typically small, but capture a considerable proportion of the total citations received.
  14. Kumar, S.: Co-authorship networks : a review of the literature (2015) 0.03 
    0.034368586 = product of:
  0.06873717 = sum of:
    0.06873717 = sum of:
      0.026206357 = weight(_text_:20 in 2586) [ClassicSimilarity], result of:
        0.026206357 = score(doc=2586,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.18222281 = fieldWeight in 2586, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.046875 = fieldNorm(doc=2586)
      0.042530816 = weight(_text_:22 in 2586) [ClassicSimilarity], result of:
        0.042530816 = score(doc=2586,freq=2.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = queryNorm
          0.23214069 = fieldWeight in 2586, 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=2586)
  0.5 = coord(1/2)
    Date
    20. 1.2015 18:30:22
  15. Lorentzen, D.G.: Bridging polarised Twitter discussions : the interactions of the users in the middle (2021) 0.03 
    0.034368586 = product of:
  0.06873717 = sum of:
    0.06873717 = sum of:
      0.026206357 = weight(_text_:20 in 182) [ClassicSimilarity], result of:
        0.026206357 = score(doc=182,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.18222281 = fieldWeight in 182, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.046875 = fieldNorm(doc=182)
      0.042530816 = weight(_text_:22 in 182) [ClassicSimilarity], result of:
        0.042530816 = score(doc=182,freq=2.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = queryNorm
          0.23214069 = fieldWeight in 182, 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=182)
  0.5 = coord(1/2)
    Date
    20. 1.2015 18:30:22
  16. Hayer, L.: Lazarsfeld zitiert : eine bibliometrische Analyse (2008) 0.03 
    0.02864049 = product of:
  0.05728098 = sum of:
    0.05728098 = sum of:
      0.02183863 = weight(_text_:20 in 1934) [ClassicSimilarity], result of:
        0.02183863 = score(doc=1934,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.15185234 = fieldWeight in 1934, 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=1934)
      0.03544235 = weight(_text_:22 in 1934) [ClassicSimilarity], result of:
        0.03544235 = score(doc=1934,freq=2.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = 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)
    Date
    22. 6.2008 12:54:12
    Source
    Mitteilungen der Vereinigung Österreichischer Bibliothekarinnen und Bibliothekare. 61(2008) H.2, S.14-20
  17. Norris, M.; Oppenheim, C.: ¬The h-index : a broad review of a new bibliometric indicator (2010) 0.03 
    0.02864049 = product of:
  0.05728098 = sum of:
    0.05728098 = sum of:
      0.02183863 = weight(_text_:20 in 4147) [ClassicSimilarity], result of:
        0.02183863 = score(doc=4147,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = 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)
      0.03544235 = weight(_text_:22 in 4147) [ClassicSimilarity], result of:
        0.03544235 = score(doc=4147,freq=2.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = 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)
    Date
    10. 3.1997 20:31:13
    8. 1.2011 19:22:13
  18. Walters, W.H.; Linvill, A.C.: Bibliographic index coverage of open-access journals in six subject areas (2011) 0.03 
    0.02864049 = product of:
  0.05728098 = sum of:
    0.05728098 = sum of:
      0.02183863 = weight(_text_:20 in 4635) [ClassicSimilarity], result of:
        0.02183863 = score(doc=4635,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.15185234 = fieldWeight in 4635, 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=4635)
      0.03544235 = weight(_text_:22 in 4635) [ClassicSimilarity], result of:
        0.03544235 = score(doc=4635,freq=2.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = 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.
    Date
    27. 7.2011 20:55:26
  19. Costas, R.; Zahedi, Z.; Wouters, P.: ¬The thematic orientation of publications mentioned on social media : large-scale disciplinary comparison of social media metrics with citations (2015) 0.03 
    0.02864049 = product of:
  0.05728098 = sum of:
    0.05728098 = sum of:
      0.02183863 = weight(_text_:20 in 2598) [ClassicSimilarity], result of:
        0.02183863 = score(doc=2598,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.15185234 = fieldWeight in 2598, 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=2598)
      0.03544235 = weight(_text_:22 in 2598) [ClassicSimilarity], result of:
        0.03544235 = score(doc=2598,freq=2.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = queryNorm
          0.19345059 = fieldWeight in 2598, 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=2598)
  0.5 = coord(1/2)
    Date
    20. 1.2015 18:30:22
  20. Thelwall, M.: Are Mendeley reader counts high enough for research evaluations when articles are published? (2017) 0.03 
    0.02864049 = product of:
  0.05728098 = sum of:
    0.05728098 = sum of:
      0.02183863 = weight(_text_:20 in 3806) [ClassicSimilarity], result of:
        0.02183863 = score(doc=3806,freq=2.0), product of:
          0.1438149 = queryWeight, product of:
            2.748821 = idf(docFreq=7692, maxDocs=44218)
            0.05231876 = queryNorm
          0.15185234 = fieldWeight in 3806, 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=3806)
      0.03544235 = weight(_text_:22 in 3806) [ClassicSimilarity], result of:
        0.03544235 = score(doc=3806,freq=2.0), product of:
          0.18321139 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05231876 = queryNorm
          0.19345059 = fieldWeight in 3806, 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=3806)
  0.5 = coord(1/2)
    Date
    20. 1.2015 18:30:22

Authors

Years

Languages

  • e 308
  • d 24
  • sp 2
  • dk 1
  • f 1
  • ro 1
  • More… Less…

Types

  • a 329
  • m 4
  • el 3
  • r 2
  • s 2
  • x 2
  • b 1
  • More… Less…

Themes

Subjects

Classifications