Search (4 results, page 1 of 1)

  • × theme_ss:"Informetrie"
  • × type_ss:"a"
  • × year_i:[1980 TO 1990}
  1. Davies, R.: Q-analysis : a methodology for librarianship and information science (1985) 0.09
    0.08739811 = product of:
      0.17479622 = sum of:
        0.17479622 = product of:
          0.34959245 = sum of:
            0.34959245 = weight(_text_:q in 589) [ClassicSimilarity], result of:
              0.34959245 = score(doc=589,freq=12.0), product of:
                0.32872224 = queryWeight, product of:
                  6.5493927 = idf(docFreq=171, maxDocs=44218)
                  0.050191253 = queryNorm
                1.0634888 = fieldWeight in 589, product of:
                  3.4641016 = tf(freq=12.0), with freq of:
                    12.0 = termFreq=12.0
                  6.5493927 = idf(docFreq=171, maxDocs=44218)
                  0.046875 = fieldNorm(doc=589)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    Q-analysis is a methodology for investigating a wide range of structural phenomena. Strutures are defined in terms of relations between members of sets and their salient features are revealed using techniques of algebraic topology. However, the basic method can be mastered by non-mathematicians. Q-analysis has been applied to problems as diverse as discovering the rules for the diagnosis of a rare disease and the study of tactics in a football match. Other applications include some of interest to librarians and information scientists. In bibliometrics, Q-analysis has proved capable of emulating techniques such as bibliographic coupling, co-citation analysis and co-word analysis. It has also been used to produce a classification scheme for television programmes based on different principles from most bibliographic classifications. This paper introduces the basic ideas of Q-analysis. Applications relevant to librarianship and information science are reviewed and present limitations of the approach described. New theoretical advances including some in other fields such as planning and design theory and artificial intelligence may lead to a still more powerful method of investigating structure
    Object
    Q-Analysis
  2. Nicholls, P.T.: Empirical validation of Lotka's law (1986) 0.03
    0.027200889 = product of:
      0.054401778 = sum of:
        0.054401778 = product of:
          0.108803555 = sum of:
            0.108803555 = weight(_text_:22 in 5509) [ClassicSimilarity], result of:
              0.108803555 = score(doc=5509,freq=2.0), product of:
                0.17576122 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.050191253 = queryNorm
                0.61904186 = fieldWeight in 5509, 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=5509)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Information processing and management. 22(1986), S.417-419
  3. Fiala, J.: Information flood : fiction and reality (1987) 0.03
    0.027200889 = product of:
      0.054401778 = sum of:
        0.054401778 = product of:
          0.108803555 = sum of:
            0.108803555 = weight(_text_:22 in 1080) [ClassicSimilarity], result of:
              0.108803555 = score(doc=1080,freq=2.0), product of:
                0.17576122 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.050191253 = queryNorm
                0.61904186 = fieldWeight in 1080, 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=1080)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Thermochimica acta. 110(1987), S.11-22
  4. Tsay, M.-Y.: ¬A bibliometric study of indexing and abstracting, 1876-1976 (1989) 0.02
    0.017466486 = product of:
      0.03493297 = sum of:
        0.03493297 = product of:
          0.13973188 = sum of:
            0.13973188 = weight(_text_:authors in 5060) [ClassicSimilarity], result of:
              0.13973188 = score(doc=5060,freq=6.0), product of:
                0.22881259 = queryWeight, product of:
                  4.558814 = idf(docFreq=1258, maxDocs=44218)
                  0.050191253 = queryNorm
                0.61068267 = fieldWeight in 5060, product of:
                  2.4494898 = tf(freq=6.0), with freq of:
                    6.0 = termFreq=6.0
                  4.558814 = idf(docFreq=1258, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=5060)
          0.25 = coord(1/4)
      0.5 = coord(1/2)
    
    Abstract
    In a bibliometric study of references to indexing and abstracting from 1876 to 1976 a total of 2.381 references in Wellisch's Indexing and abstracting: an international bibliography were analysed by a PL/I program. Most of the articles (67%) appeared as journal papers. The Bradford-Zipf law was applied to investigate the journal literature. Thirteen core journals were identified, six of which emphasize the subject of indexing and abstracting. Lotka's law was used to measure the productivity of authors. The vast majority, 1.533 out of 1.966 authors, contributed only one article. The leading authors and their active life in this subject were also studied. English is the predominant language of articles on indexing and abstracting