Search (49 results, page 1 of 3)

  • × year_i:[2000 TO 2010}
  • × theme_ss:"Informetrie"
  1. Chan, H.C.; Kim, H.-W.; Tan, W.C.: Information systems citation patterns from International Conference on Information Systems articles (2006) 0.04
    0.040329076 = product of:
      0.08065815 = sum of:
        0.08065815 = sum of:
          0.043731 = weight(_text_:w in 201) [ClassicSimilarity], result of:
            0.043731 = score(doc=201,freq=2.0), product of:
              0.17310768 = queryWeight, product of:
                3.8108058 = idf(docFreq=2659, maxDocs=44218)
                0.045425482 = queryNorm
              0.2526231 = fieldWeight in 201, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.8108058 = idf(docFreq=2659, maxDocs=44218)
                0.046875 = fieldNorm(doc=201)
          0.036927152 = weight(_text_:22 in 201) [ClassicSimilarity], result of:
            0.036927152 = score(doc=201,freq=2.0), product of:
              0.1590723 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.045425482 = queryNorm
              0.23214069 = fieldWeight in 201, 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=201)
      0.5 = coord(1/2)
    
    Date
    3. 1.2007 17:22:03
  2. Glänzel, W.; Moed, H.F.: Journal impact measures in bibliometric research (2002) 0.03
    0.02550975 = product of:
      0.0510195 = sum of:
        0.0510195 = product of:
          0.102039 = sum of:
            0.102039 = weight(_text_:w in 2904) [ClassicSimilarity], result of:
              0.102039 = score(doc=2904,freq=2.0), product of:
                0.17310768 = queryWeight, product of:
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.045425482 = queryNorm
                0.58945394 = fieldWeight in 2904, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.109375 = fieldNorm(doc=2904)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  3. Nicolaisen, J.: Citation analysis (2007) 0.02
    0.024618102 = product of:
      0.049236204 = sum of:
        0.049236204 = product of:
          0.09847241 = sum of:
            0.09847241 = weight(_text_:22 in 6091) [ClassicSimilarity], result of:
              0.09847241 = score(doc=6091,freq=2.0), product of:
                0.1590723 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045425482 = 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
  4. Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001) 0.02
    0.021759534 = product of:
      0.04351907 = sum of:
        0.04351907 = product of:
          0.08703814 = sum of:
            0.08703814 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
              0.08703814 = score(doc=3925,freq=4.0), product of:
                0.1590723 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045425482 = 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
  5. Jacso, P.: Testing the calculation of a realistic h-index in Google Scholar, Scopus, and Web of Science for F. W. Lancaster (2008) 0.02
    0.02037198 = product of:
      0.04074396 = sum of:
        0.04074396 = product of:
          0.08148792 = sum of:
            0.08148792 = weight(_text_:w in 5586) [ClassicSimilarity], result of:
              0.08148792 = score(doc=5586,freq=10.0), product of:
                0.17310768 = queryWeight, product of:
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.045425482 = queryNorm
                0.4707354 = fieldWeight in 5586, product of:
                  3.1622777 = tf(freq=10.0), with freq of:
                    10.0 = termFreq=10.0
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=5586)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    This paper focuses on the practical limitations in the content and software of the databases that are used to calculate the h-index for assessing the publishing productivity and impact of researchers. To celebrate F. W. Lancaster's biological age of seventy-five, and "scientific age" of forty-five, this paper discusses the related features of Google Scholar, Scopus, and Web of Science (WoS), and demonstrates in the latter how a much more realistic and fair h-index can be computed for F. W. Lancaster than the one produced automatically. Browsing and searching the cited reference index of the 1945-2007 edition of WoS, which in my estimate has over a hundred million "orphan references" that have no counterpart master records to be attached to, and "stray references" that cite papers which do have master records but cannot be identified by the matching algorithm because of errors of omission and commission in the references of the citing works, can bring up hundreds of additional cited references given to works of an accomplished author but are ignored in the automatic process of calculating the h-index. The partially manual process doubled the h-index value for F. W. Lancaster from 13 to 26, which is a much more realistic value for an information scientist and professor of his stature.
    Content
    Beitrag in einem Themenheft 'The Influence of F. W. Lancaster on Information Science and on Libraries', das als Festschrift für F.W. Lancaster deklariert ist.
  6. Lewison, G.: ¬The work of the Bibliometrics Research Group (City University) and associates (2005) 0.02
    0.018463576 = product of:
      0.036927152 = sum of:
        0.036927152 = product of:
          0.073854305 = sum of:
            0.073854305 = weight(_text_:22 in 4890) [ClassicSimilarity], result of:
              0.073854305 = score(doc=4890,freq=2.0), product of:
                0.1590723 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045425482 = 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
  7. Harzing, A.-W.; Wal, R. van der: ¬A Google Scholar h-index for journals : an alternative metric to measure journal impact in economics and business (2009) 0.01
    0.014577001 = product of:
      0.029154003 = sum of:
        0.029154003 = product of:
          0.058308005 = sum of:
            0.058308005 = weight(_text_:w in 2630) [ClassicSimilarity], result of:
              0.058308005 = score(doc=2630,freq=2.0), product of:
                0.17310768 = queryWeight, product of:
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.045425482 = queryNorm
                0.33683082 = fieldWeight in 2630, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.0625 = fieldNorm(doc=2630)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  8. Raan, A.F.J. van: Statistical properties of bibliometric indicators : research group indicator distributions and correlations (2006) 0.01
    0.013055721 = product of:
      0.026111443 = sum of:
        0.026111443 = product of:
          0.052222885 = sum of:
            0.052222885 = weight(_text_:22 in 5275) [ClassicSimilarity], result of:
              0.052222885 = score(doc=5275,freq=4.0), product of:
                0.1590723 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045425482 = 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
  9. Larivière, V.; Gingras, Y.; Archambault, E.: ¬The decline in the concentration of citations, 1900-2007 (2009) 0.01
    0.013055721 = product of:
      0.026111443 = sum of:
        0.026111443 = product of:
          0.052222885 = sum of:
            0.052222885 = weight(_text_:22 in 2763) [ClassicSimilarity], result of:
              0.052222885 = score(doc=2763,freq=4.0), product of:
                0.1590723 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045425482 = 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
  10. Nourmohammadi, H.A.; Umstätter, W.: ¬Die Verteilung der Autorenhäufigkeit in wissenschaftlichen Zeitschriften bei verschiedenen Themen und Ländern (2004) 0.01
    0.012754875 = product of:
      0.02550975 = sum of:
        0.02550975 = product of:
          0.0510195 = sum of:
            0.0510195 = weight(_text_:w in 2514) [ClassicSimilarity], result of:
              0.0510195 = score(doc=2514,freq=2.0), product of:
                0.17310768 = queryWeight, product of:
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.045425482 = queryNorm
                0.29472697 = fieldWeight in 2514, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=2514)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  11. Glänzel, W.: Coauthorship patterns and trends in the sciences (1980-1998) : a bibliometric study with implications for database indexing and search strategies (2002) 0.01
    0.012754875 = product of:
      0.02550975 = sum of:
        0.02550975 = product of:
          0.0510195 = sum of:
            0.0510195 = weight(_text_:w in 810) [ClassicSimilarity], result of:
              0.0510195 = score(doc=810,freq=2.0), product of:
                0.17310768 = queryWeight, product of:
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.045425482 = queryNorm
                0.29472697 = fieldWeight in 810, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=810)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  12. Egghe, L.; Liang, L.; Rousseau, R.: Fundamental properties of rhythm sequences (2008) 0.01
    0.012754875 = product of:
      0.02550975 = sum of:
        0.02550975 = product of:
          0.0510195 = sum of:
            0.0510195 = weight(_text_:w in 1965) [ClassicSimilarity], result of:
              0.0510195 = score(doc=1965,freq=2.0), product of:
                0.17310768 = queryWeight, product of:
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.045425482 = queryNorm
                0.29472697 = fieldWeight in 1965, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=1965)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    Fundamental mathematical properties of rhythm sequences are studied. In particular, a set of three axioms for valid rhythm indicators is proposed, and it is shown that the R-indicator satisfies only two out of three but that the R-indicator satisfies all three. This fills a critical, logical gap in the study of these indicator sequences. Matrices leading to a constant R-sequence are called baseline matrices. They are characterized as matrices with constant w-year diachronous impact factors. The relation with classical impact factors is clarified. Using regression analysis matrices with a rhythm sequence that is on average equal to 1 (smaller than 1, larger than 1) are characterized.
  13. Mayr, P.; Umstätter, W.: ¬Eine bibliometrische Zeitschriftenanalyse mit Jol Scientrometrics und NfD bzw. IWP (2008) 0.01
    0.012754875 = product of:
      0.02550975 = sum of:
        0.02550975 = product of:
          0.0510195 = sum of:
            0.0510195 = weight(_text_:w in 2302) [ClassicSimilarity], result of:
              0.0510195 = score(doc=2302,freq=2.0), product of:
                0.17310768 = queryWeight, product of:
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.045425482 = queryNorm
                0.29472697 = fieldWeight in 2302, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=2302)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  14. Harzing, A.-W.: Comparing the Google Scholar h-index with the ISI Journal Impact Factor (2008) 0.01
    0.012754875 = product of:
      0.02550975 = sum of:
        0.02550975 = product of:
          0.0510195 = sum of:
            0.0510195 = weight(_text_:w in 855) [ClassicSimilarity], result of:
              0.0510195 = score(doc=855,freq=2.0), product of:
                0.17310768 = queryWeight, product of:
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.045425482 = queryNorm
                0.29472697 = fieldWeight in 855, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=855)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  15. Thelwall, M.; Ruschenburg, T.: Grundlagen und Forschungsfelder der Webometrie (2006) 0.01
    0.012309051 = product of:
      0.024618102 = sum of:
        0.024618102 = product of:
          0.049236204 = sum of:
            0.049236204 = weight(_text_:22 in 77) [ClassicSimilarity], result of:
              0.049236204 = score(doc=77,freq=2.0), product of:
                0.1590723 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045425482 = queryNorm
                0.30952093 = fieldWeight in 77, 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=77)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    4.12.2006 12:12:22
  16. Rostaing, H.; Barts, N.; Léveillé, V.: Bibliometrics: representation instrument of the multidisciplinary positioning of a scientific area : Implementation for an Advisory Scientific Committee (2007) 0.01
    0.012309051 = product of:
      0.024618102 = sum of:
        0.024618102 = product of:
          0.049236204 = sum of:
            0.049236204 = weight(_text_:22 in 1144) [ClassicSimilarity], result of:
              0.049236204 = score(doc=1144,freq=2.0), product of:
                0.1590723 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045425482 = 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)
      0.5 = coord(1/2)
    
    Date
    30.12.2007 11:22:39
  17. Koehler, W.: Web page change and persistence : a four-year longitudinal study (2002) 0.01
    0.01093275 = product of:
      0.0218655 = sum of:
        0.0218655 = product of:
          0.043731 = sum of:
            0.043731 = weight(_text_:w in 203) [ClassicSimilarity], result of:
              0.043731 = score(doc=203,freq=2.0), product of:
                0.17310768 = queryWeight, product of:
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.045425482 = queryNorm
                0.2526231 = fieldWeight in 203, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.046875 = fieldNorm(doc=203)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  18. Samoylenko, I.; Chao, T.-C.; Liu, W.-C.; Chen, C.-M.: Visualizing the scientific world and its evolution (2006) 0.01
    0.01093275 = product of:
      0.0218655 = sum of:
        0.0218655 = product of:
          0.043731 = sum of:
            0.043731 = weight(_text_:w in 5911) [ClassicSimilarity], result of:
              0.043731 = score(doc=5911,freq=2.0), product of:
                0.17310768 = queryWeight, product of:
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.045425482 = queryNorm
                0.2526231 = fieldWeight in 5911, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.046875 = fieldNorm(doc=5911)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  19. Janssens, F.; Leta, J.; Glänzel, W.; Moor, B. de: Towards mapping library and information science (2006) 0.01
    0.01093275 = product of:
      0.0218655 = sum of:
        0.0218655 = product of:
          0.043731 = sum of:
            0.043731 = weight(_text_:w in 992) [ClassicSimilarity], result of:
              0.043731 = score(doc=992,freq=2.0), product of:
                0.17310768 = queryWeight, product of:
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.045425482 = queryNorm
                0.2526231 = fieldWeight in 992, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.046875 = fieldNorm(doc=992)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  20. Dees, W.: Aktuelle Themen der Szientometrie : Bericht über die 12th International Conference on Scientometrics and Informetrics vom 14. bis 17. Juli 2009 (2009) 0.01
    0.01093275 = product of:
      0.0218655 = sum of:
        0.0218655 = product of:
          0.043731 = sum of:
            0.043731 = weight(_text_:w in 3242) [ClassicSimilarity], result of:
              0.043731 = score(doc=3242,freq=2.0), product of:
                0.17310768 = queryWeight, product of:
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.045425482 = queryNorm
                0.2526231 = fieldWeight in 3242, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.046875 = fieldNorm(doc=3242)
          0.5 = coord(1/2)
      0.5 = coord(1/2)