Search (122 results, page 1 of 7)

  • × theme_ss:"Informetrie"
  1. Nicholls, P.T.: Empirical validation of Lotka's law (1986) 0.02
    0.017529253 = product of:
      0.035058506 = sum of:
        0.035058506 = product of:
          0.10517551 = sum of:
            0.10517551 = weight(_text_:22 in 5509) [ClassicSimilarity], result of:
              0.10517551 = score(doc=5509,freq=2.0), product of:
                0.16990048 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04851763 = 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)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    Information processing and management. 22(1986), S.417-419
  2. Nicolaisen, J.: Citation analysis (2007) 0.02
    0.017529253 = product of:
      0.035058506 = sum of:
        0.035058506 = product of:
          0.10517551 = sum of:
            0.10517551 = weight(_text_:22 in 6091) [ClassicSimilarity], result of:
              0.10517551 = score(doc=6091,freq=2.0), product of:
                0.16990048 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04851763 = 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)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    13. 7.2008 19:53:22
  3. Fiala, J.: Information flood : fiction and reality (1987) 0.02
    0.017529253 = product of:
      0.035058506 = sum of:
        0.035058506 = product of:
          0.10517551 = sum of:
            0.10517551 = weight(_text_:22 in 1080) [ClassicSimilarity], result of:
              0.10517551 = score(doc=1080,freq=2.0), product of:
                0.16990048 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04851763 = 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)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    Thermochimica acta. 110(1987), S.11-22
  4. Ivancheva, L.E.: ¬The non-Gaussian nature of bibliometric and scientometric distributions : a new approach to interpretation (2001) 0.02
    0.017360885 = product of:
      0.03472177 = sum of:
        0.03472177 = product of:
          0.10416531 = sum of:
            0.10416531 = weight(_text_:universal in 6846) [ClassicSimilarity], result of:
              0.10416531 = score(doc=6846,freq=2.0), product of:
                0.25562882 = queryWeight, product of:
                  5.268782 = idf(docFreq=618, maxDocs=44218)
                  0.04851763 = queryNorm
                0.40748656 = fieldWeight in 6846, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  5.268782 = idf(docFreq=618, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=6846)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Abstract
    An attempt has been made to give an answer to the question: Why do most bibliometric and scientometric laws reveal characters of Non-Gaussian distributions, i.e., have unduly long "tails"? We tried to apply the approach of the so-called "Universal Law," discovered by G. Stankov (1997, 1998). The basic principle we have used here is that of the reciprocity of energy and space. A new "wave concept" of scientific information has been propounded, in which terms the well-known bibliometric and scientometric distributions find a rather satisfactory explanation. One of the made corollaries is that a = 1 is the most reasonable value for the family of Zipf laws, applied to information or social phenomena.
  5. Waltman, L.; Eck, N.J. van; Raan, A.F.J. van: Universality of citation distributions revisited (2012) 0.02
    0.017360885 = product of:
      0.03472177 = sum of:
        0.03472177 = product of:
          0.10416531 = sum of:
            0.10416531 = weight(_text_:universal in 4963) [ClassicSimilarity], result of:
              0.10416531 = score(doc=4963,freq=2.0), product of:
                0.25562882 = queryWeight, product of:
                  5.268782 = idf(docFreq=618, maxDocs=44218)
                  0.04851763 = queryNorm
                0.40748656 = fieldWeight in 4963, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  5.268782 = idf(docFreq=618, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=4963)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Abstract
    Radicchi, Fortunato, and Castellano (2008) claim that, apart from a scaling factor, all fields of science are characterized by the same citation distribution. We present a large-scale validation study of this universality-of-citation-distributions claim. Our analysis shows that claiming citation distributions to be universal for all fields of science is not warranted. Although many fields indeed seem to have fairly similar citation distributions, there are exceptions as well. We also briefly discuss the consequences of our findings for the measurement of scientific impact using citation-based bibliometric indicators.
  6. Su, Y.; Han, L.-F.: ¬A new literature growth model : variable exponential growth law of literature (1998) 0.02
    0.015493816 = product of:
      0.030987632 = sum of:
        0.030987632 = product of:
          0.09296289 = sum of:
            0.09296289 = weight(_text_:22 in 3690) [ClassicSimilarity], result of:
              0.09296289 = score(doc=3690,freq=4.0), product of:
                0.16990048 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04851763 = 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)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    22. 5.1999 19:22:35
  7. Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001) 0.02
    0.015493816 = product of:
      0.030987632 = sum of:
        0.030987632 = product of:
          0.09296289 = sum of:
            0.09296289 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
              0.09296289 = score(doc=3925,freq=4.0), product of:
                0.16990048 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04851763 = 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)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    22. 7.2006 15:22:28
  8. Diodato, V.: Dictionary of bibliometrics (1994) 0.02
    0.015338095 = product of:
      0.03067619 = sum of:
        0.03067619 = product of:
          0.092028566 = sum of:
            0.092028566 = weight(_text_:22 in 5666) [ClassicSimilarity], result of:
              0.092028566 = score(doc=5666,freq=2.0), product of:
                0.16990048 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04851763 = 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)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Footnote
    Rez. in: Journal of library and information science 22(1996) no.2, S.116-117 (L.C. Smith)
  9. Bookstein, A.: Informetric distributions : I. Unified overview (1990) 0.02
    0.015338095 = product of:
      0.03067619 = sum of:
        0.03067619 = product of:
          0.092028566 = sum of:
            0.092028566 = weight(_text_:22 in 6902) [ClassicSimilarity], result of:
              0.092028566 = score(doc=6902,freq=2.0), product of:
                0.16990048 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04851763 = 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)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    22. 7.2006 18:55:29
  10. Bookstein, A.: Informetric distributions : II. Resilience to ambiguity (1990) 0.02
    0.015338095 = product of:
      0.03067619 = sum of:
        0.03067619 = product of:
          0.092028566 = sum of:
            0.092028566 = weight(_text_:22 in 4689) [ClassicSimilarity], result of:
              0.092028566 = score(doc=4689,freq=2.0), product of:
                0.16990048 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04851763 = 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)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    22. 7.2006 18:55:55
  11. Belefant-Miller, H.; King, D.W.: ¬A profile of faculty reading and information-use behaviors on the cusp of the electronic age (2003) 0.01
    0.014880758 = product of:
      0.029761516 = sum of:
        0.029761516 = product of:
          0.08928455 = sum of:
            0.08928455 = weight(_text_:universal in 5153) [ClassicSimilarity], result of:
              0.08928455 = score(doc=5153,freq=2.0), product of:
                0.25562882 = queryWeight, product of:
                  5.268782 = idf(docFreq=618, maxDocs=44218)
                  0.04851763 = queryNorm
                0.3492742 = fieldWeight in 5153, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  5.268782 = idf(docFreq=618, maxDocs=44218)
                  0.046875 = fieldNorm(doc=5153)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Abstract
    Finally Belefant-Miller and King analyze the demographic portion of a survey of faculty and staff at the University of Tennessee to determine reading and information use behavior. Faculty each read an average 384 documents per year for their work including an average 161 journal articles. They funded 84% of their own subscriptions, and averaged 4.2 subscriptions per person. Personal computer access was available to 91.5% and 95% made some use of it. About half access e-mail more than once a day spending an average 24 minutes a day. Browsing remains a very important means of document discovery despite the use of universal bibliographic databases. Paper remains the preferred reading interface, with electronic reading about one quarter of paper readings. Self reported publication rates were 3 journal articles per year.
  12. Lewison, G.: ¬The work of the Bibliometrics Research Group (City University) and associates (2005) 0.01
    0.013146939 = product of:
      0.026293878 = sum of:
        0.026293878 = product of:
          0.07888163 = sum of:
            0.07888163 = weight(_text_:22 in 4890) [ClassicSimilarity], result of:
              0.07888163 = score(doc=4890,freq=2.0), product of:
                0.16990048 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04851763 = 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)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    20. 1.2007 17:02:22
  13. Marx, W.; Bornmann, L.: On the problems of dealing with bibliometric data (2014) 0.01
    0.013146939 = product of:
      0.026293878 = sum of:
        0.026293878 = product of:
          0.07888163 = sum of:
            0.07888163 = weight(_text_:22 in 1239) [ClassicSimilarity], result of:
              0.07888163 = score(doc=1239,freq=2.0), product of:
                0.16990048 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04851763 = 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)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    18. 3.2014 19:13:22
  14. López-Cózar, E.D.; Robinson-García, N.R.; Torres-Salinas, D.: ¬The Google scholar experiment : how to index false papers and manipulate bibliometric indicators (2014) 0.01
    0.012400633 = product of:
      0.024801265 = sum of:
        0.024801265 = product of:
          0.07440379 = sum of:
            0.07440379 = weight(_text_:universal in 1213) [ClassicSimilarity], result of:
              0.07440379 = score(doc=1213,freq=2.0), product of:
                0.25562882 = queryWeight, product of:
                  5.268782 = idf(docFreq=618, maxDocs=44218)
                  0.04851763 = queryNorm
                0.29106182 = fieldWeight in 1213, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  5.268782 = idf(docFreq=618, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=1213)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Abstract
    Google Scholar has been well received by the research community. Its promises of free, universal, and easy access to scientific literature coupled with the perception that it covers the social sciences and the humanities better than other traditional multidisciplinary databases have contributed to the quick expansion of Google Scholar Citations and Google Scholar Metrics: 2 new bibliometric products that offer citation data at the individual level and at journal level. In this article, we show the results of an experiment undertaken to analyze Google Scholar's capacity to detect citation-counting manipulation. For this, we uploaded 6 documents to an institutional web domain that were authored by a fictitious researcher and referenced all the publications of the members of the EC3 research group at the University of Granada. The detection by Google Scholar of these papers caused an outburst in the number of citations included in the Google Scholar Citations profiles of the authors. We discuss the effects of such an outburst and how it could affect the future development of such products, at both the individual level and the journal level, especially if Google Scholar persists with its lack of transparency.
  15. White, H.D.: Authors as citers over time (2001) 0.01
    0.009920506 = product of:
      0.019841012 = sum of:
        0.019841012 = product of:
          0.059523035 = sum of:
            0.059523035 = weight(_text_:universal in 5581) [ClassicSimilarity], result of:
              0.059523035 = score(doc=5581,freq=2.0), product of:
                0.25562882 = queryWeight, product of:
                  5.268782 = idf(docFreq=618, maxDocs=44218)
                  0.04851763 = queryNorm
                0.23284946 = fieldWeight in 5581, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  5.268782 = idf(docFreq=618, maxDocs=44218)
                  0.03125 = fieldNorm(doc=5581)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Abstract
    This study explores the tendency of authors to recite themselves and others in multiple works over time, using the insights gained to build citation theory. The set of all authors whom an author cites is defined as that author's citation identity. The study explains how to retrieve citation identities from the Institute for Scientific Information's files on Dialog and how to deal with idiosyncrasies of these files. As the author's oeuvre grows, the identity takes the form of a core-and-scatter distribution that may be divided into authors cited only once (unicitations) and authors cited at least twice (recitations). The latter group, especially those recited most frequently, are interpretable as symbols of a citer's main substantive concerns. As illustrated by the top recitees of eight information scientists, identities are intelligible, individualized, and wide-ranging. They are ego-centered without being egotistical. They are often affected by social ties between citers and citees, but the universal motivator seems to be the perceived relevance of the citees' works. Citing styles in identities differ: "scientific-paper style" authors recite heavily, adding to core; "bibliographic-essay style" authors are heavy on unicitations, adding to scatter; "literature-review style" authors do both at once. Identities distill aspects of citers' intellectual lives, such as orienting figures, interdisciplinary interests, bidisciplinary careers, and conduct in controversies. They can also be related to past schemes for classifying citations in categories such as positive-negative and perfunctory- organic; indeed, one author's frequent recitation of another, whether positive or negative, may be the readiest indicator of an organic relation between them. The shape of the core-and-scatter distribution of names in identities can be explained by the principle of least effort. Citers economize on effort by frequently reciting only a relatively small core of names in their identities. They also economize by frequent use of perfunctory citations, which require relatively little context, and infrequent use of negative citations, which require contexts more laborious to set
  16. Raan, A.F.J. van: Statistical properties of bibliometric indicators : research group indicator distributions and correlations (2006) 0.01
    0.009296291 = product of:
      0.018592581 = sum of:
        0.018592581 = product of:
          0.05577774 = sum of:
            0.05577774 = weight(_text_:22 in 5275) [ClassicSimilarity], result of:
              0.05577774 = score(doc=5275,freq=4.0), product of:
                0.16990048 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04851763 = 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)
          0.33333334 = coord(1/3)
      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
    0.009296291 = product of:
      0.018592581 = sum of:
        0.018592581 = product of:
          0.05577774 = sum of:
            0.05577774 = weight(_text_:22 in 2763) [ClassicSimilarity], result of:
              0.05577774 = score(doc=2763,freq=4.0), product of:
                0.16990048 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04851763 = 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)
          0.33333334 = coord(1/3)
      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
    0.008764626 = product of:
      0.017529253 = sum of:
        0.017529253 = product of:
          0.052587755 = sum of:
            0.052587755 = weight(_text_:22 in 5092) [ClassicSimilarity], result of:
              0.052587755 = score(doc=5092,freq=2.0), product of:
                0.16990048 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04851763 = 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)
          0.33333334 = coord(1/3)
      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
    0.008764626 = product of:
      0.017529253 = sum of:
        0.017529253 = product of:
          0.052587755 = sum of:
            0.052587755 = weight(_text_:22 in 80) [ClassicSimilarity], result of:
              0.052587755 = score(doc=80,freq=2.0), product of:
                0.16990048 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04851763 = 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)
          0.33333334 = coord(1/3)
      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
    0.008764626 = product of:
      0.017529253 = sum of:
        0.017529253 = product of:
          0.052587755 = sum of:
            0.052587755 = weight(_text_:22 in 673) [ClassicSimilarity], result of:
              0.052587755 = score(doc=673,freq=2.0), product of:
                0.16990048 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04851763 = 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)
          0.33333334 = coord(1/3)
      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…