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) 0.00
    0.0035289964 = product of:
      0.010586989 = sum of:
        0.010586989 = product of:
          0.021173978 = sum of:
            0.021173978 = weight(_text_:of in 1590) [ClassicSimilarity], result of:
              0.021173978 = score(doc=1590,freq=10.0), product of:
                0.06850986 = queryWeight, product of:
                  1.5637573 = idf(docFreq=25162, maxDocs=44218)
                  0.043811057 = queryNorm
                0.3090647 = fieldWeight in 1590, product of:
                  3.1622777 = tf(freq=10.0), with freq of:
                    10.0 = termFreq=10.0
                  1.5637573 = idf(docFreq=25162, maxDocs=44218)
                  0.0625 = fieldNorm(doc=1590)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    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