Search (144 results, page 2 of 8)

  • × theme_ss:"Informetrie"
  • × type_ss:"a"
  • × year_i:[2010 TO 2020}
  1. Vieira, E.S.; Cabral, J.A.S.; Gomes, J.A.N.F.: Definition of a model based on bibliometric indicators for assessing applicants to academic positions (2014) 0.01 
    0.010893771 = product of:
  0.021787543 = sum of:
    0.021787543 = product of:
      0.043575086 = sum of:
        0.043575086 = weight(_text_:22 in 1221) [ClassicSimilarity], result of:
          0.043575086 = score(doc=1221,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = queryNorm
            0.2708308 = fieldWeight in 1221, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0546875 = fieldNorm(doc=1221)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    18. 3.2014 18:22:21
  2. Albarrán, P.; Ruiz-Castillo, J.: References made and citations received by scientific articles (2011) 0.01 
    0.009337518 = product of:
  0.018675037 = sum of:
    0.018675037 = product of:
      0.037350073 = sum of:
        0.037350073 = weight(_text_:22 in 4185) [ClassicSimilarity], result of:
          0.037350073 = score(doc=4185,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = 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)
  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.
  3. D'Angelo, C.A.; Giuffrida, C.; Abramo, G.: ¬A heuristic approach to author name disambiguation in bibliometrics databases for large-scale research assessments (2011) 0.01 
    0.009337518 = product of:
  0.018675037 = sum of:
    0.018675037 = product of:
      0.037350073 = sum of:
        0.037350073 = weight(_text_:22 in 4190) [ClassicSimilarity], result of:
          0.037350073 = score(doc=4190,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = queryNorm
            0.23214069 = fieldWeight in 4190, 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=4190)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 1.2011 13:06:52
  4. Frandsen, T.F.; Nicolaisen, J.: ¬The ripple effect : citation chain reactions of a nobel prize (2013) 0.01 
    0.009337518 = product of:
  0.018675037 = sum of:
    0.018675037 = product of:
      0.037350073 = sum of:
        0.037350073 = weight(_text_:22 in 654) [ClassicSimilarity], result of:
          0.037350073 = score(doc=654,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = queryNorm
            0.23214069 = fieldWeight in 654, 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=654)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 3.2013 16:21:09
  5. Bornmann, L.: How to analyze percentile citation impact data meaningfully in bibliometrics : the statistical analysis of distributions, percentile rank classes, and top-cited papers (2013) 0.01 
    0.009337518 = product of:
  0.018675037 = sum of:
    0.018675037 = product of:
      0.037350073 = sum of:
        0.037350073 = weight(_text_:22 in 656) [ClassicSimilarity], result of:
          0.037350073 = score(doc=656,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = queryNorm
            0.23214069 = fieldWeight in 656, 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=656)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 3.2013 19:44:17
  6. Wan, X.; Liu, F.: Are all literature citations equally important? : automatic citation strength estimation and its applications (2014) 0.01 
    0.009337518 = product of:
  0.018675037 = sum of:
    0.018675037 = product of:
      0.037350073 = sum of:
        0.037350073 = weight(_text_:22 in 1350) [ClassicSimilarity], result of:
          0.037350073 = score(doc=1350,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = queryNorm
            0.23214069 = fieldWeight in 1350, 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=1350)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 8.2014 17:12:35
  7. Kronegger, L.; Mali, F.; Ferligoj, A.; Doreian, P.: Classifying scientific disciplines in Slovenia : a study of the evolution of collaboration structures (2015) 0.01 
    0.009337518 = product of:
  0.018675037 = sum of:
    0.018675037 = product of:
      0.037350073 = sum of:
        0.037350073 = weight(_text_:22 in 1639) [ClassicSimilarity], result of:
          0.037350073 = score(doc=1639,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = queryNorm
            0.23214069 = fieldWeight in 1639, 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=1639)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    21. 1.2015 14:55:22
  8. Ntuli, H.; Inglesi-Lotz, R.; Chang, T.; Pouris, A.: Does research output cause economic growth or vice versa? : evidence from 34 OECD countries (2015) 0.01 
    0.009337518 = product of:
  0.018675037 = sum of:
    0.018675037 = product of:
      0.037350073 = sum of:
        0.037350073 = weight(_text_:22 in 2132) [ClassicSimilarity], result of:
          0.037350073 = score(doc=2132,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = queryNorm
            0.23214069 = fieldWeight in 2132, 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=2132)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    8. 7.2015 22:00:42
  9. Kumar, S.: Co-authorship networks : a review of the literature (2015) 0.01 
    0.009337518 = product of:
  0.018675037 = sum of:
    0.018675037 = product of:
      0.037350073 = sum of:
        0.037350073 = weight(_text_:22 in 2586) [ClassicSimilarity], result of:
          0.037350073 = score(doc=2586,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = 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)
  0.5 = coord(1/2)
    Date
    20. 1.2015 18:30:22
  10. Dobrota, M.; Dobrota, M.: ARWU ranking uncertainty and sensitivity : what if the award factor was Excluded? (2016) 0.01 
    0.009337518 = product of:
  0.018675037 = sum of:
    0.018675037 = product of:
      0.037350073 = sum of:
        0.037350073 = weight(_text_:22 in 2652) [ClassicSimilarity], result of:
          0.037350073 = score(doc=2652,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = queryNorm
            0.23214069 = fieldWeight in 2652, 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=2652)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 1.2016 14:40:53
  11. Ridenour, L.: Boundary objects : measuring gaps and overlap between research areas (2016) 0.01 
    0.009337518 = product of:
  0.018675037 = sum of:
    0.018675037 = product of:
      0.037350073 = sum of:
        0.037350073 = weight(_text_:22 in 2835) [ClassicSimilarity], result of:
          0.037350073 = score(doc=2835,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = queryNorm
            0.23214069 = fieldWeight in 2835, 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=2835)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    The aim of this paper is to develop methodology to determine conceptual overlap between research areas. It investigates patterns of terminology usage in scientific abstracts as boundary objects between research specialties. Research specialties were determined by high-level classifications assigned by Thomson Reuters in their Essential Science Indicators file, which provided a strictly hierarchical classification of journals into 22 categories. Results from the query "network theory" were downloaded from the Web of Science. From this file, two top-level groups, economics and social sciences, were selected and topically analyzed to provide a baseline of similarity on which to run an informetric analysis. The Places & Spaces Map of Science (Klavans and Boyack 2007) was used to determine the proximity of disciplines to one another in order to select the two disciplines use in the analysis. Groups analyzed share common theories and goals; however, groups used different language to describe their research. It was found that 61% of term words were shared between the two groups.
  12. Thelwall, M.; Maflahi, N.: Guideline references and academic citations as evidence of the clinical value of health research (2016) 0.01 
    0.009337518 = product of:
  0.018675037 = sum of:
    0.018675037 = product of:
      0.037350073 = sum of:
        0.037350073 = weight(_text_:22 in 2856) [ClassicSimilarity], result of:
          0.037350073 = score(doc=2856,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = queryNorm
            0.23214069 = fieldWeight in 2856, 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=2856)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    19. 3.2016 12:22:00
  13. Thelwall, M.; Sud, P.: Mendeley readership counts : an investigation of temporal and disciplinary differences (2016) 0.01 
    0.009337518 = product of:
  0.018675037 = sum of:
    0.018675037 = product of:
      0.037350073 = sum of:
        0.037350073 = weight(_text_:22 in 3211) [ClassicSimilarity], result of:
          0.037350073 = score(doc=3211,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = queryNorm
            0.23214069 = fieldWeight in 3211, 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=3211)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    16.11.2016 11:07:22
  14. Didegah, F.; Thelwall, M.: Co-saved, co-tweeted, and co-cited networks (2018) 0.01 
    0.009337518 = product of:
  0.018675037 = sum of:
    0.018675037 = product of:
      0.037350073 = sum of:
        0.037350073 = weight(_text_:22 in 4291) [ClassicSimilarity], result of:
          0.037350073 = score(doc=4291,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = queryNorm
            0.23214069 = fieldWeight in 4291, 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=4291)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    28. 7.2018 10:00:22
  15. Haustein, S.; Tunger, D.: Sziento- und bibliometrische Verfahren (2013) 0.01 
    0.0079341335 = product of:
  0.015868267 = sum of:
    0.015868267 = product of:
      0.031736534 = sum of:
        0.031736534 = weight(_text_:d in 730) [ClassicSimilarity], result of:
          0.031736534 = score(doc=730,freq=6.0), product of:
            0.08729101 = queryWeight, product of:
              1.899872 = idf(docFreq=17979, maxDocs=44218)
              0.045945734 = queryNorm
            0.36357164 = fieldWeight in 730, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              1.899872 = idf(docFreq=17979, maxDocs=44218)
              0.078125 = fieldNorm(doc=730)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Language
    d
    Source
    Grundlagen der praktischen Information und Dokumentation. Handbuch zur Einführung in die Informationswissenschaft und -praxis. 6., völlig neu gefaßte Ausgabe. Hrsg. von R. Kuhlen, W. Semar u. D. Strauch. Begründet von Klaus Laisiepen, Ernst Lutterbeck, Karl-Heinrich Meyer-Uhlenried
  16. Zitt, M.; Lelu, A.; Bassecoulard, E.: Hybrid citation-word representations in science mapping : Portolan charts of research fields? (2011) 0.01 
    0.007781266 = product of:
  0.015562532 = sum of:
    0.015562532 = product of:
      0.031125063 = sum of:
        0.031125063 = weight(_text_:22 in 4130) [ClassicSimilarity], result of:
          0.031125063 = score(doc=4130,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = queryNorm
            0.19345059 = fieldWeight in 4130, 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=4130)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    8. 1.2011 18:22:50
  17. Norris, M.; Oppenheim, C.: ¬The h-index : a broad review of a new bibliometric indicator (2010) 0.01 
    0.007781266 = product of:
  0.015562532 = sum of:
    0.015562532 = product of:
      0.031125063 = sum of:
        0.031125063 = weight(_text_:22 in 4147) [ClassicSimilarity], result of:
          0.031125063 = score(doc=4147,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = 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)
  0.5 = coord(1/2)
    Date
    8. 1.2011 19:22:13
  18. Leydesdorff, L.; Bornmann, L.: How fractional counting of citations affects the impact factor : normalization in terms of differences in citation potentials among fields of science (2011) 0.01 
    0.007781266 = product of:
  0.015562532 = sum of:
    0.015562532 = product of:
      0.031125063 = sum of:
        0.031125063 = weight(_text_:22 in 4186) [ClassicSimilarity], result of:
          0.031125063 = score(doc=4186,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = queryNorm
            0.19345059 = fieldWeight in 4186, 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=4186)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 1.2011 12:51:07
  19. Stvilia, B.; Hinnant, C.C.; Schindler, K.; Worrall, A.; Burnett, G.; Burnett, K.; Kazmer, M.M.; Marty, P.F.: Composition of scientific teams and publication productivity at a national science lab (2011) 0.01 
    0.007781266 = product of:
  0.015562532 = sum of:
    0.015562532 = product of:
      0.031125063 = sum of:
        0.031125063 = weight(_text_:22 in 4191) [ClassicSimilarity], result of:
          0.031125063 = score(doc=4191,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = queryNorm
            0.19345059 = fieldWeight in 4191, 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=4191)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 1.2011 13:19:42
  20. Walters, W.H.; Linvill, A.C.: Bibliographic index coverage of open-access journals in six subject areas (2011) 0.01 
    0.007781266 = product of:
  0.015562532 = sum of:
    0.015562532 = product of:
      0.031125063 = sum of:
        0.031125063 = weight(_text_:22 in 4635) [ClassicSimilarity], result of:
          0.031125063 = score(doc=4635,freq=2.0), product of:
            0.16089413 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045945734 = 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)
  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.

Authors

Languages

  • e 110
  • d 34

Themes