Search (187 results, page 1 of 10)

  • × theme_ss:"Informetrie"
  1. Su, Y.; Han, L.-F.: ¬A new literature growth model : variable exponential growth law of literature (1998) 0.10
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    Date
    22. 5.1999 19:22:35
    Source
    Scientometrics. 42(1998) no.2, S.259-265
    Year
    1998
  2. Chongde, W.; Zhe, W.: Evaluation of the models for Bradford's law (1998) 0.07
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    Date
    22. 5.1999 19:12:28
    Source
    Scientometrics. 42(1998) no.1, S.89-95
    Year
    1998
  3. Tijssen, R.J.W.; Wijk, E. van: ¬The global science base of information and communication technologies : bibliometric analysis of ICT research papers (1998) 0.07
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    Date
    22. 5.1999 19:26:54
    Source
    Scientometrics. 42(1998) no.1, S.41-60
    Year
    1998
  4. Neth, M.: Citation analysis and the Web (1998) 0.06
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    Date
    10. 1.1999 16:22:37
    Source
    Art documentation. 17(1998) no.1, S.29-33
    Year
    1998
  5. Falkingham, L.T.; Reeves, R.: Context analysis : a technique for analysing research in a field, applied to literature on the management of R&D at the section level (1998) 0.06
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    Date
    22. 5.1999 19:18:46
    Source
    Scientometrics. 42(1998) no.2, S.97-120
    Year
    1998
  6. 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) 0.05
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    Date
    30. 1.1999 17:22:22
    Source
    Journal of information science. 24(1998) no.4, S.241-254
    Year
    1998
  7. Campanario, J.M.: Large increases and decreases in journal impact factors in only one year : the effect of journal self-citations (2011) 0.05
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    Abstract
    I studied the factors (citations, self-citations, and number of articles) that influenced large changes in only 1 year in the impact factors (IFs) of journals. A set of 360 instances of journals with large increases or decreases in their IFs from a given year to the following was selected from journals in the Journal Citation Reports from 1998 to 2007 (40 journals each year). The main factor influencing large changes was the change in the number of citations. About 54% of the increases and 42% of the decreases in the journal IFs were associated with changes in the journal self-citations.
    Date
    22. 1.2011 12:53:00
  8. Wormell, I.: Infometrics exploring databases as analytical tools (1998) 0.05
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    Source
    Database. 21(1998) no.5, S.24-25
    Year
    1998
  9. Science and technology indicators (1998) 0.04
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    Source
    Journal of the American Society for Information Science. 49(1998) no.1, S.1-91
    Year
    1998
  10. Theories of citation? (1998) 0.04
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    Source
    Scientometrics. 43(1998) no.1, S.5-139
    Year
    1998
  11. Leydesdorff, L.: Can networks of journal-journal citations be used as indicators of change in the social sciences? (2003) 0.04
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    Abstract
    Aggregated journal-journal citations can be used for mapping the intellectual organization of the sciences in terms of specialties because the latter can be considered as interreading communities. Can the journal-journal citations also be used as early indicators of change by comparing the files for two subsequent years? Probabilistic entropy measures enable us to analyze changes in large datasets at different levels of aggregation and in considerable detail. Compares Journal Citation Reports of the Social Science Citation Index for 1999 with similar data for 1998 and analyzes the differences using these measures. Compares the various indicators with similar developments in the Science Citation Index. Specialty formation seems a more important mechanism in the development of the social sciences than in the natural and life sciences, but the developments in the social sciences are volatile. The use of aggregate statistics based on the Science Citation Index is ill-advised in the case of the social sciences because of structural differences in the underlying dynamics.
    Date
    6.11.2005 19:02:22
  12. Albarrán, P.; Ruiz-Castillo, J.: References made and citations received by scientific articles (2011) 0.04
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    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.
  13. Noyons, E.C.M.; Raan, A.F.J. van: Monitoring scientific developments from a dynamic perspective : self-organized structuring to map neural network research (1998) 0.03
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    Source
    Journal of the American Society for Information Science. 49(1998) no.1, S.68-81
    Year
    1998
  14. Proceedings of the sixth conference of the International Society for Scientometrics and Informetrics (1998) 0.03
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    Source
    Scientometrics. 41(1998) nos.1/2, S.5-271
    Year
    1998
  15. Tsay, M.-Y.: Library journal use and citation half-life in medical science (1998) 0.03
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    Source
    Journal of the American Society for Information Science. 49(1998) no.14, S.1283-1292
    Year
    1998
  16. Ding, Y.: Scholarly communication and bibliometrics : Part 1: The scholarly communication model: literature review (1998) 0.03
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    Source
    International forum on information and documentation. 23(1998) no.2, S.20-29
    Year
    1998
  17. Kostoff, R.N.: ¬The use and misuse of citation analysis in research evaluation (1998) 0.03
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    Abstract
    Leydesdorff, in his 1998 paper 'Theories of citation?', addresses the history of citations and citation analysis, and the transformation of a reference mechanism into a purportedly quantitative measure of research impact/quality. Examines different facets of citations and citation analysis, and discusses the validity of citation analysis as a useful measure of research impact/quality
    Source
    Scientometrics. 43(1998) no.1, S.27-43
    Year
    1998
  18. Nicholls, P.T.: Empirical validation of Lotka's law (1986) 0.02
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    Source
    Information processing and management. 22(1986), S.417-419
  19. Nicolaisen, J.: Citation analysis (2007) 0.02
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    Date
    13. 7.2008 19:53:22
  20. Fiala, J.: Information flood : fiction and reality (1987) 0.02
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    Source
    Thermochimica acta. 110(1987), S.11-22

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