Document (#21031)

Author
Avramescu, A.
Title
Teoria difuziei informatiei stiintifice
Source
Probleme de Informare si Documentare. 31(1997) nos.3/4, S.207-220
Year
1997
Abstract
The theory of diffusion can be successfully applied to scientific information dissemination by identifying space with a series of successive authors, and potential (temperature) with the interest of new authors towards earlier published papers, measured by the number of citations. As the total number of citation equals the number of references, the conservation law is fulfilled and Fourier's parabolic differential equation can be applied
Content
Contribution to the 30th anniversary issue of 'Probleme de Informare si Documentare' - Reprint of an article which originally appeared in 'Probleme de Informare si Documentare 13(1978) no.2, S.43-64'
Footnote
Übers. des Titels: Scientific information diffusion theory
Theme
Informetrie

Similar documents (content)

  1. Didegah, F.; Thelwall, M.: Determinants of research citation impact in nanoscience and nanotechnology (2013) 0.14
    0.13558365 = sum of:
      0.13558365 = product of:
        0.48422733 = sum of:
          0.055129506 = weight(abstract_txt:published in 737) [ClassicSimilarity], result of:
            0.055129506 = score(doc=737,freq=2.0), product of:
              0.101527214 = queryWeight, product of:
                4.9146953 = idf(docFreq=881, maxDocs=44218)
                0.020657886 = queryNorm
              0.54300225 = fieldWeight in 737, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.9146953 = idf(docFreq=881, maxDocs=44218)
                0.078125 = fieldNorm(doc=737)
          0.010258655 = weight(abstract_txt:with in 737) [ClassicSimilarity], result of:
            0.010258655 = score(doc=737,freq=1.0), product of:
              0.052529916 = queryWeight, product of:
                1.0172486 = boost
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.020657886 = queryNorm
              0.19529167 = fieldWeight in 737, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.078125 = fieldNorm(doc=737)
          0.048207223 = weight(abstract_txt:papers in 737) [ClassicSimilarity], result of:
            0.048207223 = score(doc=737,freq=1.0), product of:
              0.1169709 = queryWeight, product of:
                1.0733656 = boost
                5.2752647 = idf(docFreq=614, maxDocs=44218)
                0.020657886 = queryNorm
              0.41213006 = fieldWeight in 737, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.2752647 = idf(docFreq=614, maxDocs=44218)
                0.078125 = fieldNorm(doc=737)
          0.049976986 = weight(abstract_txt:citations in 737) [ClassicSimilarity], result of:
            0.049976986 = score(doc=737,freq=1.0), product of:
              0.11981645 = queryWeight, product of:
                1.086343 = boost
                5.339045 = idf(docFreq=576, maxDocs=44218)
                0.020657886 = queryNorm
              0.4171129 = fieldWeight in 737, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.339045 = idf(docFreq=576, maxDocs=44218)
                0.078125 = fieldNorm(doc=737)
          0.12902552 = weight(abstract_txt:references in 737) [ClassicSimilarity], result of:
            0.12902552 = score(doc=737,freq=5.0), product of:
              0.13186519 = queryWeight, product of:
                1.1396562 = boost
                5.601063 = idf(docFreq=443, maxDocs=44218)
                0.020657886 = queryNorm
              0.9784654 = fieldWeight in 737, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                5.601063 = idf(docFreq=443, maxDocs=44218)
                0.078125 = fieldNorm(doc=737)
          0.09329602 = weight(abstract_txt:authors in 737) [ClassicSimilarity], result of:
            0.09329602 = score(doc=737,freq=2.0), product of:
              0.18165408 = queryWeight, product of:
                1.8916742 = boost
                4.648501 = idf(docFreq=1150, maxDocs=44218)
                0.020657886 = queryNorm
              0.51359165 = fieldWeight in 737, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.648501 = idf(docFreq=1150, maxDocs=44218)
                0.078125 = fieldNorm(doc=737)
          0.09833342 = weight(abstract_txt:number in 737) [ClassicSimilarity], result of:
            0.09833342 = score(doc=737,freq=2.0), product of:
              0.21536127 = queryWeight, product of:
                2.5226278 = boost
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.020657886 = queryNorm
              0.4565975 = fieldWeight in 737, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.078125 = fieldNorm(doc=737)
        0.28 = coord(7/25)
    
  2. Frandsen, T.F.; Rousseau, R.; Rowlands, I.: Diffusion factors (2006) 0.13
    0.13485856 = sum of:
      0.13485856 = product of:
        0.48163775 = sum of:
          0.010155551 = weight(abstract_txt:with in 5587) [ClassicSimilarity], result of:
            0.010155551 = score(doc=5587,freq=2.0), product of:
              0.052529916 = queryWeight, product of:
                1.0172486 = boost
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.020657886 = queryNorm
              0.1933289 = fieldWeight in 5587, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5587)
          0.030635152 = weight(abstract_txt:interest in 5587) [ClassicSimilarity], result of:
            0.030635152 = score(doc=5587,freq=1.0), product of:
              0.109669134 = queryWeight, product of:
                1.039324 = boost
                5.1079607 = idf(docFreq=726, maxDocs=44218)
                0.020657886 = queryNorm
              0.2793416 = fieldWeight in 5587, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.1079607 = idf(docFreq=726, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5587)
          0.033745054 = weight(abstract_txt:papers in 5587) [ClassicSimilarity], result of:
            0.033745054 = score(doc=5587,freq=1.0), product of:
              0.1169709 = queryWeight, product of:
                1.0733656 = boost
                5.2752647 = idf(docFreq=614, maxDocs=44218)
                0.020657886 = queryNorm
              0.28849104 = fieldWeight in 5587, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.2752647 = idf(docFreq=614, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5587)
          0.038253427 = weight(abstract_txt:series in 5587) [ClassicSimilarity], result of:
            0.038253427 = score(doc=5587,freq=1.0), product of:
              0.12716998 = queryWeight, product of:
                1.119183 = boost
                5.500443 = idf(docFreq=490, maxDocs=44218)
                0.020657886 = queryNorm
              0.30080548 = fieldWeight in 5587, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.500443 = idf(docFreq=490, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5587)
          0.053615894 = weight(abstract_txt:earlier in 5587) [ClassicSimilarity], result of:
            0.053615894 = score(doc=5587,freq=1.0), product of:
              0.1592698 = queryWeight, product of:
                1.2524935 = boost
                6.155624 = idf(docFreq=254, maxDocs=44218)
                0.020657886 = queryNorm
              0.33663568 = fieldWeight in 5587, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.155624 = idf(docFreq=254, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5587)
          0.26454365 = weight(abstract_txt:diffusion in 5587) [ClassicSimilarity], result of:
            0.26454365 = score(doc=5587,freq=9.0), product of:
              0.22191593 = queryWeight, product of:
                1.4784377 = boost
                7.2660704 = idf(docFreq=83, maxDocs=44218)
                0.020657886 = queryNorm
              1.1920896 = fieldWeight in 5587, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                7.2660704 = idf(docFreq=83, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5587)
          0.05068902 = weight(abstract_txt:applied in 5587) [ClassicSimilarity], result of:
            0.05068902 = score(doc=5587,freq=1.0), product of:
              0.19329634 = queryWeight, product of:
                1.9513519 = boost
                4.79515 = idf(docFreq=993, maxDocs=44218)
                0.020657886 = queryNorm
              0.26223475 = fieldWeight in 5587, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.79515 = idf(docFreq=993, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5587)
        0.28 = coord(7/25)
    
  3. Liu, Y.; Rousseau, R.: Knowledge diffusion through publications and citations : a case study using ESI-fields as unit of diffusion (2010) 0.13
    0.13397248 = sum of:
      0.13397248 = product of:
        0.55821866 = sum of:
          0.031185957 = weight(abstract_txt:published in 3334) [ClassicSimilarity], result of:
            0.031185957 = score(doc=3334,freq=1.0), product of:
              0.101527214 = queryWeight, product of:
                4.9146953 = idf(docFreq=881, maxDocs=44218)
                0.020657886 = queryNorm
              0.30716845 = fieldWeight in 3334, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9146953 = idf(docFreq=881, maxDocs=44218)
                0.0625 = fieldNorm(doc=3334)
          0.05654251 = weight(abstract_txt:citations in 3334) [ClassicSimilarity], result of:
            0.05654251 = score(doc=3334,freq=2.0), product of:
              0.11981645 = queryWeight, product of:
                1.086343 = boost
                5.339045 = idf(docFreq=576, maxDocs=44218)
                0.020657886 = queryNorm
              0.47190937 = fieldWeight in 3334, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.339045 = idf(docFreq=576, maxDocs=44218)
                0.0625 = fieldNorm(doc=3334)
          0.0672582 = weight(abstract_txt:measured in 3334) [ClassicSimilarity], result of:
            0.0672582 = score(doc=3334,freq=1.0), product of:
              0.16947536 = queryWeight, product of:
                1.2919986 = boost
                6.3497796 = idf(docFreq=209, maxDocs=44218)
                0.020657886 = queryNorm
              0.39686123 = fieldWeight in 3334, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.3497796 = idf(docFreq=209, maxDocs=44218)
                0.0625 = fieldNorm(doc=3334)
          0.26663497 = weight(abstract_txt:diffusion in 3334) [ClassicSimilarity], result of:
            0.26663497 = score(doc=3334,freq=7.0), product of:
              0.22191593 = queryWeight, product of:
                1.4784377 = boost
                7.2660704 = idf(docFreq=83, maxDocs=44218)
                0.020657886 = queryNorm
              1.2015134 = fieldWeight in 3334, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                7.2660704 = idf(docFreq=83, maxDocs=44218)
                0.0625 = fieldNorm(doc=3334)
          0.05793031 = weight(abstract_txt:applied in 3334) [ClassicSimilarity], result of:
            0.05793031 = score(doc=3334,freq=1.0), product of:
              0.19329634 = queryWeight, product of:
                1.9513519 = boost
                4.79515 = idf(docFreq=993, maxDocs=44218)
                0.020657886 = queryNorm
              0.29969686 = fieldWeight in 3334, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.79515 = idf(docFreq=993, maxDocs=44218)
                0.0625 = fieldNorm(doc=3334)
          0.07866673 = weight(abstract_txt:number in 3334) [ClassicSimilarity], result of:
            0.07866673 = score(doc=3334,freq=2.0), product of:
              0.21536127 = queryWeight, product of:
                2.5226278 = boost
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.020657886 = queryNorm
              0.365278 = fieldWeight in 3334, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.0625 = fieldNorm(doc=3334)
        0.24 = coord(6/25)
    
  4. Egghe, L.; Ravichandra Rao, I.K.: Duality revisited : construction of fractional frequency distributions based on two dual Lotka laws (2002) 0.12
    0.123050764 = sum of:
      0.123050764 = product of:
        0.5127115 = sum of:
          0.025128473 = weight(abstract_txt:with in 1006) [ClassicSimilarity], result of:
            0.025128473 = score(doc=1006,freq=6.0), product of:
              0.052529916 = queryWeight, product of:
                1.0172486 = boost
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.020657886 = queryNorm
              0.47836497 = fieldWeight in 1006, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.078125 = fieldNorm(doc=1006)
          0.08349736 = weight(abstract_txt:papers in 1006) [ClassicSimilarity], result of:
            0.08349736 = score(doc=1006,freq=3.0), product of:
              0.1169709 = queryWeight, product of:
                1.0733656 = boost
                5.2752647 = idf(docFreq=614, maxDocs=44218)
                0.020657886 = queryNorm
              0.71383023 = fieldWeight in 1006, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.2752647 = idf(docFreq=614, maxDocs=44218)
                0.078125 = fieldNorm(doc=1006)
          0.061068073 = weight(abstract_txt:total in 1006) [ClassicSimilarity], result of:
            0.061068073 = score(doc=1006,freq=1.0), product of:
              0.1369449 = queryWeight, product of:
                1.1613997 = boost
                5.707926 = idf(docFreq=398, maxDocs=44218)
                0.020657886 = queryNorm
              0.4459317 = fieldWeight in 1006, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.707926 = idf(docFreq=398, maxDocs=44218)
                0.078125 = fieldNorm(doc=1006)
          0.108320475 = weight(abstract_txt:earlier in 1006) [ClassicSimilarity], result of:
            0.108320475 = score(doc=1006,freq=2.0), product of:
              0.1592698 = queryWeight, product of:
                1.2524935 = boost
                6.155624 = idf(docFreq=254, maxDocs=44218)
                0.020657886 = queryNorm
              0.6801068 = fieldWeight in 1006, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.155624 = idf(docFreq=254, maxDocs=44218)
                0.078125 = fieldNorm(doc=1006)
          0.11426381 = weight(abstract_txt:authors in 1006) [ClassicSimilarity], result of:
            0.11426381 = score(doc=1006,freq=3.0), product of:
              0.18165408 = queryWeight, product of:
                1.8916742 = boost
                4.648501 = idf(docFreq=1150, maxDocs=44218)
                0.020657886 = queryNorm
              0.62901866 = fieldWeight in 1006, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.648501 = idf(docFreq=1150, maxDocs=44218)
                0.078125 = fieldNorm(doc=1006)
          0.12043335 = weight(abstract_txt:number in 1006) [ClassicSimilarity], result of:
            0.12043335 = score(doc=1006,freq=3.0), product of:
              0.21536127 = queryWeight, product of:
                2.5226278 = boost
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.020657886 = queryNorm
              0.5592155 = fieldWeight in 1006, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.078125 = fieldNorm(doc=1006)
        0.24 = coord(6/25)
    
  5. González-Teruel, A.; Pérez-Pulido, M.: ¬The diffusion and influence of theoretical models of information behaviour : the case of Savolainen's ELIS model (2020) 0.12
    0.12145244 = sum of:
      0.12145244 = product of:
        0.3795389 = sum of:
          0.03859065 = weight(abstract_txt:published in 5974) [ClassicSimilarity], result of:
            0.03859065 = score(doc=5974,freq=2.0), product of:
              0.101527214 = queryWeight, product of:
                4.9146953 = idf(docFreq=881, maxDocs=44218)
                0.020657886 = queryNorm
              0.38010156 = fieldWeight in 5974, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.9146953 = idf(docFreq=881, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5974)
          0.007181059 = weight(abstract_txt:with in 5974) [ClassicSimilarity], result of:
            0.007181059 = score(doc=5974,freq=1.0), product of:
              0.052529916 = queryWeight, product of:
                1.0172486 = boost
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.020657886 = queryNorm
              0.13670418 = fieldWeight in 5974, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5974)
          0.033745054 = weight(abstract_txt:papers in 5974) [ClassicSimilarity], result of:
            0.033745054 = score(doc=5974,freq=1.0), product of:
              0.1169709 = queryWeight, product of:
                1.0733656 = boost
                5.2752647 = idf(docFreq=614, maxDocs=44218)
                0.020657886 = queryNorm
              0.28849104 = fieldWeight in 5974, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.2752647 = idf(docFreq=614, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5974)
          0.03498389 = weight(abstract_txt:citations in 5974) [ClassicSimilarity], result of:
            0.03498389 = score(doc=5974,freq=1.0), product of:
              0.11981645 = queryWeight, product of:
                1.086343 = boost
                5.339045 = idf(docFreq=576, maxDocs=44218)
                0.020657886 = queryNorm
              0.291979 = fieldWeight in 5974, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.339045 = idf(docFreq=576, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5974)
          0.042747654 = weight(abstract_txt:total in 5974) [ClassicSimilarity], result of:
            0.042747654 = score(doc=5974,freq=1.0), product of:
              0.1369449 = queryWeight, product of:
                1.1613997 = boost
                5.707926 = idf(docFreq=398, maxDocs=44218)
                0.020657886 = queryNorm
              0.3121522 = fieldWeight in 5974, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.707926 = idf(docFreq=398, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5974)
          0.06527593 = weight(abstract_txt:dissemination in 5974) [ClassicSimilarity], result of:
            0.06527593 = score(doc=5974,freq=1.0), product of:
              0.18159606 = queryWeight, product of:
                1.337402 = boost
                6.572923 = idf(docFreq=167, maxDocs=44218)
                0.020657886 = queryNorm
              0.35945675 = fieldWeight in 5974, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.572923 = idf(docFreq=167, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5974)
          0.08818123 = weight(abstract_txt:diffusion in 5974) [ClassicSimilarity], result of:
            0.08818123 = score(doc=5974,freq=1.0), product of:
              0.22191593 = queryWeight, product of:
                1.4784377 = boost
                7.2660704 = idf(docFreq=83, maxDocs=44218)
                0.020657886 = queryNorm
              0.39736322 = fieldWeight in 5974, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.2660704 = idf(docFreq=83, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5974)
          0.068833396 = weight(abstract_txt:number in 5974) [ClassicSimilarity], result of:
            0.068833396 = score(doc=5974,freq=2.0), product of:
              0.21536127 = queryWeight, product of:
                2.5226278 = boost
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.020657886 = queryNorm
              0.31961825 = fieldWeight in 5974, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5974)
        0.32 = coord(8/25)