Search (2 results, page 1 of 1)

  • × author_ss:"Duff, A.S."
  • × year_i:[1990 TO 2000}
  1. Duff, A.S.: Some post-war models of the information chain (1997) 0.05
    0.053970627 = product of:
      0.107941255 = sum of:
        0.107941255 = sum of:
          0.06503927 = weight(_text_:n in 1086) [ClassicSimilarity], result of:
            0.06503927 = score(doc=1086,freq=2.0), product of:
              0.19504215 = queryWeight, product of:
                4.3116565 = idf(docFreq=1611, maxDocs=44218)
                0.045236014 = queryNorm
              0.33346266 = fieldWeight in 1086, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.3116565 = idf(docFreq=1611, maxDocs=44218)
                0.0546875 = fieldNorm(doc=1086)
          0.04290199 = weight(_text_:22 in 1086) [ClassicSimilarity], result of:
            0.04290199 = score(doc=1086,freq=2.0), product of:
              0.15840882 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.045236014 = queryNorm
              0.2708308 = fieldWeight in 1086, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.0546875 = fieldNorm(doc=1086)
      0.5 = coord(1/2)
    
    Abstract
    Reviews the literature of the information chain analogous to ecology's food chain, taking the Royal Scientific Information Conference 1948 as the seminal point. Describes 8 successive models of the information chain each incorporating contemporary thoughts and experiences. Each model is labelled with the year to which it may be said to refer: Distribution of Scientific Information 1948; Document Network 1967; Dissemination of scientific and technical information 1978; Structure of Scientific Literature 1979; Ecosystem of scientific communication 1980; Information Chain 1988; Information Chain 1989; Pathways of N formation Flow 1993. Although of wide applicability the focus of interest for information scientists tends to be the communication of learned information
    Date
    9. 2.1997 18:44:22
  2. Duff, A.S.; Craig, D.; McNeill, D.A.: ¬A note on the origins of the 'information society' (1996) 0.01
    0.0091932835 = product of:
      0.018386567 = sum of:
        0.018386567 = product of:
          0.036773134 = sum of:
            0.036773134 = weight(_text_:22 in 4894) [ClassicSimilarity], result of:
              0.036773134 = score(doc=4894,freq=2.0), product of:
                0.15840882 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045236014 = queryNorm
                0.23214069 = fieldWeight in 4894, 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=4894)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of information science. 22(1996) no.2, S.117-122

Authors