Document (#21029)

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. Frandsen, T.F.; Rousseau, R.; Rowlands, I.: Diffusion factors (2006) 0.14
    0.13531676 = sum of:
      0.13531676 = product of:
        0.48327413 = sum of:
          0.010166817 = weight(abstract_txt:with in 585) [ClassicSimilarity], result of:
            0.010166817 = score(doc=585,freq=2.0), product of:
              0.052401382 = queryWeight, product of:
                1.0185252 = boost
                2.508645 = idf(docFreq=9634, maxDocs=43556)
                0.020508397 = queryNorm
              0.19401811 = fieldWeight in 585, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.508645 = idf(docFreq=9634, maxDocs=43556)
                0.0546875 = fieldNorm(doc=585)
          0.030547032 = weight(abstract_txt:interest in 585) [ClassicSimilarity], result of:
            0.030547032 = score(doc=585,freq=1.0), product of:
              0.109110214 = queryWeight, product of:
                1.0392455 = boost
                5.1193585 = idf(docFreq=707, maxDocs=43556)
                0.020508397 = queryNorm
              0.27996492 = fieldWeight in 585, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.1193585 = idf(docFreq=707, maxDocs=43556)
                0.0546875 = fieldNorm(doc=585)
          0.033734486 = weight(abstract_txt:papers in 585) [ClassicSimilarity], result of:
            0.033734486 = score(doc=585,freq=1.0), product of:
              0.11657411 = queryWeight, product of:
                1.0742034 = boost
                5.291562 = idf(docFreq=595, maxDocs=43556)
                0.020508397 = queryNorm
              0.2893823 = fieldWeight in 585, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.291562 = idf(docFreq=595, maxDocs=43556)
                0.0546875 = fieldNorm(doc=585)
          0.03783159 = weight(abstract_txt:series in 585) [ClassicSimilarity], result of:
            0.03783159 = score(doc=585,freq=1.0), product of:
              0.12583143 = queryWeight, product of:
                1.1160406 = boost
                5.497654 = idf(docFreq=484, maxDocs=43556)
                0.020508397 = queryNorm
              0.30065295 = fieldWeight in 585, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.497654 = idf(docFreq=484, maxDocs=43556)
                0.0546875 = fieldNorm(doc=585)
          0.05333156 = weight(abstract_txt:earlier in 585) [ClassicSimilarity], result of:
            0.05333156 = score(doc=585,freq=1.0), product of:
              0.15820089 = queryWeight, product of:
                1.251382 = boost
                6.16435 = idf(docFreq=248, maxDocs=43556)
                0.020508397 = queryNorm
              0.3371129 = fieldWeight in 585, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.16435 = idf(docFreq=248, maxDocs=43556)
                0.0546875 = fieldNorm(doc=585)
          0.26706406 = weight(abstract_txt:diffusion in 585) [ClassicSimilarity], result of:
            0.26706406 = score(doc=585,freq=9.0), product of:
              0.22261216 = queryWeight, product of:
                1.4844306 = boost
                7.312355 = idf(docFreq=78, maxDocs=43556)
                0.020508397 = queryNorm
              1.1996832 = fieldWeight in 585, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                7.312355 = idf(docFreq=78, maxDocs=43556)
                0.0546875 = fieldNorm(doc=585)
          0.050598603 = weight(abstract_txt:applied in 585) [ClassicSimilarity], result of:
            0.050598603 = score(doc=585,freq=1.0), product of:
              0.1924517 = queryWeight, product of:
                1.9519168 = boost
                4.8076043 = idf(docFreq=966, maxDocs=43556)
                0.020508397 = queryNorm
              0.26291585 = fieldWeight in 585, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8076043 = idf(docFreq=966, maxDocs=43556)
                0.0546875 = fieldNorm(doc=585)
        0.28 = coord(7/25)
    
  2. Didegah, F.; Thelwall, M.: Determinants of research citation impact in nanoscience and nanotechnology (2013) 0.13
    0.13478349 = sum of:
      0.13478349 = product of:
        0.4813696 = sum of:
          0.054983396 = weight(abstract_txt:published in 2735) [ClassicSimilarity], result of:
            0.054983396 = score(doc=2735,freq=2.0), product of:
              0.10102506 = queryWeight, product of:
                4.926034 = idf(docFreq=858, maxDocs=43556)
                0.020508397 = queryNorm
              0.544255 = fieldWeight in 2735, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.926034 = idf(docFreq=858, maxDocs=43556)
                0.078125 = fieldNorm(doc=2735)
          0.010270037 = weight(abstract_txt:with in 2735) [ClassicSimilarity], result of:
            0.010270037 = score(doc=2735,freq=1.0), product of:
              0.052401382 = queryWeight, product of:
                1.0185252 = boost
                2.508645 = idf(docFreq=9634, maxDocs=43556)
                0.020508397 = queryNorm
              0.1959879 = fieldWeight in 2735, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.508645 = idf(docFreq=9634, maxDocs=43556)
                0.078125 = fieldNorm(doc=2735)
          0.048192117 = weight(abstract_txt:papers in 2735) [ClassicSimilarity], result of:
            0.048192117 = score(doc=2735,freq=1.0), product of:
              0.11657411 = queryWeight, product of:
                1.0742034 = boost
                5.291562 = idf(docFreq=595, maxDocs=43556)
                0.020508397 = queryNorm
              0.41340327 = fieldWeight in 2735, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.291562 = idf(docFreq=595, maxDocs=43556)
                0.078125 = fieldNorm(doc=2735)
          0.049914517 = weight(abstract_txt:citations in 2735) [ClassicSimilarity], result of:
            0.049914517 = score(doc=2735,freq=1.0), product of:
              0.11933541 = queryWeight, product of:
                1.0868512 = boost
                5.353866 = idf(docFreq=559, maxDocs=43556)
                0.020508397 = queryNorm
              0.4182708 = fieldWeight in 2735, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.353866 = idf(docFreq=559, maxDocs=43556)
                0.078125 = fieldNorm(doc=2735)
          0.12753986 = weight(abstract_txt:references in 2735) [ClassicSimilarity], result of:
            0.12753986 = score(doc=2735,freq=5.0), product of:
              0.13043436 = queryWeight, product of:
                1.1362698 = boost
                5.5973034 = idf(docFreq=438, maxDocs=43556)
                0.020508397 = queryNorm
              0.9778087 = fieldWeight in 2735, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                5.5973034 = idf(docFreq=438, maxDocs=43556)
                0.078125 = fieldNorm(doc=2735)
          0.093622774 = weight(abstract_txt:authors in 2735) [ClassicSimilarity], result of:
            0.093622774 = score(doc=2735,freq=2.0), product of:
              0.18149824 = queryWeight, product of:
                1.8955562 = boost
                4.668787 = idf(docFreq=1110, maxDocs=43556)
                0.020508397 = queryNorm
              0.51583296 = fieldWeight in 2735, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.668787 = idf(docFreq=1110, maxDocs=43556)
                0.078125 = fieldNorm(doc=2735)
          0.09684691 = weight(abstract_txt:number in 2735) [ClassicSimilarity], result of:
            0.09684691 = score(doc=2735,freq=2.0), product of:
              0.21250656 = queryWeight, product of:
                2.5120728 = boost
                4.124852 = idf(docFreq=1913, maxDocs=43556)
                0.020508397 = queryNorm
              0.45573607 = fieldWeight in 2735, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.124852 = idf(docFreq=1913, maxDocs=43556)
                0.078125 = fieldNorm(doc=2735)
        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
    0.13411279 = sum of:
      0.13411279 = product of:
        0.5588033 = sum of:
          0.031103306 = weight(abstract_txt:published in 332) [ClassicSimilarity], result of:
            0.031103306 = score(doc=332,freq=1.0), product of:
              0.10102506 = queryWeight, product of:
                4.926034 = idf(docFreq=858, maxDocs=43556)
                0.020508397 = queryNorm
              0.30787712 = fieldWeight in 332, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.926034 = idf(docFreq=858, maxDocs=43556)
                0.0625 = fieldNorm(doc=332)
          0.05647183 = weight(abstract_txt:citations in 332) [ClassicSimilarity], result of:
            0.05647183 = score(doc=332,freq=2.0), product of:
              0.11933541 = queryWeight, product of:
                1.0868512 = boost
                5.353866 = idf(docFreq=559, maxDocs=43556)
                0.020508397 = queryNorm
              0.47321936 = fieldWeight in 332, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.353866 = idf(docFreq=559, maxDocs=43556)
                0.0625 = fieldNorm(doc=332)
          0.06674841 = weight(abstract_txt:measured in 332) [ClassicSimilarity], result of:
            0.06674841 = score(doc=332,freq=1.0), product of:
              0.16808103 = queryWeight, product of:
                1.2898666 = boost
                6.3539267 = idf(docFreq=205, maxDocs=43556)
                0.020508397 = queryNorm
              0.39712042 = fieldWeight in 332, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.3539267 = idf(docFreq=205, maxDocs=43556)
                0.0625 = fieldNorm(doc=332)
          0.26917526 = weight(abstract_txt:diffusion in 332) [ClassicSimilarity], result of:
            0.26917526 = score(doc=332,freq=7.0), product of:
              0.22261216 = queryWeight, product of:
                1.4844306 = boost
                7.312355 = idf(docFreq=78, maxDocs=43556)
                0.020508397 = queryNorm
              1.209167 = fieldWeight in 332, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                7.312355 = idf(docFreq=78, maxDocs=43556)
                0.0625 = fieldNorm(doc=332)
          0.057826977 = weight(abstract_txt:applied in 332) [ClassicSimilarity], result of:
            0.057826977 = score(doc=332,freq=1.0), product of:
              0.1924517 = queryWeight, product of:
                1.9519168 = boost
                4.8076043 = idf(docFreq=966, maxDocs=43556)
                0.020508397 = queryNorm
              0.30047527 = fieldWeight in 332, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8076043 = idf(docFreq=966, maxDocs=43556)
                0.0625 = fieldNorm(doc=332)
          0.07747752 = weight(abstract_txt:number in 332) [ClassicSimilarity], result of:
            0.07747752 = score(doc=332,freq=2.0), product of:
              0.21250656 = queryWeight, product of:
                2.5120728 = boost
                4.124852 = idf(docFreq=1913, maxDocs=43556)
                0.020508397 = queryNorm
              0.36458886 = fieldWeight in 332, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.124852 = idf(docFreq=1913, maxDocs=43556)
                0.0625 = fieldNorm(doc=332)
        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
    0.1225313 = sum of:
      0.1225313 = product of:
        0.5105471 = sum of:
          0.02515635 = weight(abstract_txt:with in 2004) [ClassicSimilarity], result of:
            0.02515635 = score(doc=2004,freq=6.0), product of:
              0.052401382 = queryWeight, product of:
                1.0185252 = boost
                2.508645 = idf(docFreq=9634, maxDocs=43556)
                0.020508397 = queryNorm
              0.48007038 = fieldWeight in 2004, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                2.508645 = idf(docFreq=9634, maxDocs=43556)
                0.078125 = fieldNorm(doc=2004)
          0.0834712 = weight(abstract_txt:papers in 2004) [ClassicSimilarity], result of:
            0.0834712 = score(doc=2004,freq=3.0), product of:
              0.11657411 = queryWeight, product of:
                1.0742034 = boost
                5.291562 = idf(docFreq=595, maxDocs=43556)
                0.020508397 = queryNorm
              0.7160355 = fieldWeight in 2004, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.291562 = idf(docFreq=595, maxDocs=43556)
                0.078125 = fieldNorm(doc=2004)
          0.060896743 = weight(abstract_txt:total in 2004) [ClassicSimilarity], result of:
            0.060896743 = score(doc=2004,freq=1.0), product of:
              0.13625343 = queryWeight, product of:
                1.1613394 = boost
                5.7207975 = idf(docFreq=387, maxDocs=43556)
                0.020508397 = queryNorm
              0.44693732 = fieldWeight in 2004, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.7207975 = idf(docFreq=387, maxDocs=43556)
                0.078125 = fieldNorm(doc=2004)
          0.10774603 = weight(abstract_txt:earlier in 2004) [ClassicSimilarity], result of:
            0.10774603 = score(doc=2004,freq=2.0), product of:
              0.15820089 = queryWeight, product of:
                1.251382 = boost
                6.16435 = idf(docFreq=248, maxDocs=43556)
                0.020508397 = queryNorm
              0.6810709 = fieldWeight in 2004, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.16435 = idf(docFreq=248, maxDocs=43556)
                0.078125 = fieldNorm(doc=2004)
          0.114664026 = weight(abstract_txt:authors in 2004) [ClassicSimilarity], result of:
            0.114664026 = score(doc=2004,freq=3.0), product of:
              0.18149824 = queryWeight, product of:
                1.8955562 = boost
                4.668787 = idf(docFreq=1110, maxDocs=43556)
                0.020508397 = queryNorm
              0.6317638 = fieldWeight in 2004, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.668787 = idf(docFreq=1110, maxDocs=43556)
                0.078125 = fieldNorm(doc=2004)
          0.11861275 = weight(abstract_txt:number in 2004) [ClassicSimilarity], result of:
            0.11861275 = score(doc=2004,freq=3.0), product of:
              0.21250656 = queryWeight, product of:
                2.5120728 = boost
                4.124852 = idf(docFreq=1913, maxDocs=43556)
                0.020508397 = queryNorm
              0.5581604 = fieldWeight in 2004, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.124852 = idf(docFreq=1913, maxDocs=43556)
                0.078125 = fieldNorm(doc=2004)
        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
    0.12113119 = sum of:
      0.12113119 = product of:
        0.37853497 = sum of:
          0.038488377 = weight(abstract_txt:published in 2260) [ClassicSimilarity], result of:
            0.038488377 = score(doc=2260,freq=2.0), product of:
              0.10102506 = queryWeight, product of:
                4.926034 = idf(docFreq=858, maxDocs=43556)
                0.020508397 = queryNorm
              0.3809785 = fieldWeight in 2260, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.926034 = idf(docFreq=858, maxDocs=43556)
                0.0546875 = fieldNorm(doc=2260)
          0.007189026 = weight(abstract_txt:with in 2260) [ClassicSimilarity], result of:
            0.007189026 = score(doc=2260,freq=1.0), product of:
              0.052401382 = queryWeight, product of:
                1.0185252 = boost
                2.508645 = idf(docFreq=9634, maxDocs=43556)
                0.020508397 = queryNorm
              0.13719153 = fieldWeight in 2260, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.508645 = idf(docFreq=9634, maxDocs=43556)
                0.0546875 = fieldNorm(doc=2260)
          0.033734486 = weight(abstract_txt:papers in 2260) [ClassicSimilarity], result of:
            0.033734486 = score(doc=2260,freq=1.0), product of:
              0.11657411 = queryWeight, product of:
                1.0742034 = boost
                5.291562 = idf(docFreq=595, maxDocs=43556)
                0.020508397 = queryNorm
              0.2893823 = fieldWeight in 2260, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.291562 = idf(docFreq=595, maxDocs=43556)
                0.0546875 = fieldNorm(doc=2260)
          0.03494016 = weight(abstract_txt:citations in 2260) [ClassicSimilarity], result of:
            0.03494016 = score(doc=2260,freq=1.0), product of:
              0.11933541 = queryWeight, product of:
                1.0868512 = boost
                5.353866 = idf(docFreq=559, maxDocs=43556)
                0.020508397 = queryNorm
              0.29278955 = fieldWeight in 2260, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.353866 = idf(docFreq=559, maxDocs=43556)
                0.0546875 = fieldNorm(doc=2260)
          0.04262772 = weight(abstract_txt:total in 2260) [ClassicSimilarity], result of:
            0.04262772 = score(doc=2260,freq=1.0), product of:
              0.13625343 = queryWeight, product of:
                1.1613394 = boost
                5.7207975 = idf(docFreq=387, maxDocs=43556)
                0.020508397 = queryNorm
              0.3128561 = fieldWeight in 2260, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.7207975 = idf(docFreq=387, maxDocs=43556)
                0.0546875 = fieldNorm(doc=2260)
          0.064741015 = weight(abstract_txt:dissemination in 2260) [ClassicSimilarity], result of:
            0.064741015 = score(doc=2260,freq=1.0), product of:
              0.1800276 = queryWeight, product of:
                1.3349192 = boost
                6.575857 = idf(docFreq=164, maxDocs=43556)
                0.020508397 = queryNorm
              0.35961717 = fieldWeight in 2260, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.575857 = idf(docFreq=164, maxDocs=43556)
                0.0546875 = fieldNorm(doc=2260)
          0.08902136 = weight(abstract_txt:diffusion in 2260) [ClassicSimilarity], result of:
            0.08902136 = score(doc=2260,freq=1.0), product of:
              0.22261216 = queryWeight, product of:
                1.4844306 = boost
                7.312355 = idf(docFreq=78, maxDocs=43556)
                0.020508397 = queryNorm
              0.39989442 = fieldWeight in 2260, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.312355 = idf(docFreq=78, maxDocs=43556)
                0.0546875 = fieldNorm(doc=2260)
          0.06779284 = weight(abstract_txt:number in 2260) [ClassicSimilarity], result of:
            0.06779284 = score(doc=2260,freq=2.0), product of:
              0.21250656 = queryWeight, product of:
                2.5120728 = boost
                4.124852 = idf(docFreq=1913, maxDocs=43556)
                0.020508397 = queryNorm
              0.31901526 = fieldWeight in 2260, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.124852 = idf(docFreq=1913, maxDocs=43556)
                0.0546875 = fieldNorm(doc=2260)
        0.32 = coord(8/25)