Search (1 results, page 1 of 1)

  • × author_ss:"Ballard, T."
  • × theme_ss:"Suchoberflächen"
  1. Ballard, T.; Smith, J.: ¬The human interface : an ongoing study of OPAC usage at Adelphi University (1992) 0.01
    0.0076571116 = product of:
      0.030628446 = sum of:
        0.030628446 = weight(_text_:library in 1590) [ClassicSimilarity], result of:
          0.030628446 = score(doc=1590,freq=2.0), product of:
            0.1317883 = queryWeight, product of:
              2.6293786 = idf(docFreq=8668, maxDocs=44218)
              0.050121464 = queryNorm
            0.23240642 = fieldWeight in 1590, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.6293786 = idf(docFreq=8668, maxDocs=44218)
              0.0625 = fieldNorm(doc=1590)
      0.25 = coord(1/4)
    
    Abstract
    Presents results of 2 user surveys of the Innopac OPAC developed at Adelphi Univ. Library, New York State. 1.: how long users spend at the terminal; how the length of searches vary; how session commands were distributed; how user behaviour varied by session and length of session. 2.: unsuccessful searches: author searches; title searches, and subject searches