Search (3 results, page 1 of 1)

  • × author_ss:"Lüdtke, H."
  • × theme_ss:"Informationsdienstleistungen"
  1. Lüdtke, H.: Secret Patrons, Invisible Users : Digital Reference @ Your Library: Fundstücke einer nicht nur virtuellen Erkundung in den USA (2004) 0.04
    0.04139191 = product of:
      0.08278382 = sum of:
        0.08278382 = sum of:
          0.034424394 = weight(_text_:h in 2295) [ClassicSimilarity], result of:
            0.034424394 = score(doc=2295,freq=4.0), product of:
              0.12668294 = queryWeight, product of:
                2.4844491 = idf(docFreq=10020, maxDocs=44218)
                0.05099035 = queryNorm
              0.27173662 = fieldWeight in 2295, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                2.4844491 = idf(docFreq=10020, maxDocs=44218)
                0.0546875 = fieldNorm(doc=2295)
          0.04835942 = weight(_text_:22 in 2295) [ClassicSimilarity], result of:
            0.04835942 = score(doc=2295,freq=2.0), product of:
              0.17855953 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.05099035 = queryNorm
              0.2708308 = fieldWeight in 2295, 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=2295)
      0.5 = coord(1/2)
    
    Date
    22. 3.2004 14:50:05
    Source
    BuB. 56(2004) H.3, S.202-210
  2. Lüdtke, H.: Ende der Internet Public Library (2015) 0.01
    0.010432166 = product of:
      0.020864332 = sum of:
        0.020864332 = product of:
          0.041728664 = sum of:
            0.041728664 = weight(_text_:h in 6071) [ClassicSimilarity], result of:
              0.041728664 = score(doc=6071,freq=2.0), product of:
                0.12668294 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.05099035 = queryNorm
                0.32939452 = fieldWeight in 6071, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.09375 = fieldNorm(doc=6071)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  3. Lüdtke, H.: Taking the reference desk to cyberspace : Internet-Bibliotheken und Online-Auskunftsdienste / im Mittelpunkt die Internet Public Library (USA) (2001) 0.01
    0.009835541 = product of:
      0.019671082 = sum of:
        0.019671082 = product of:
          0.039342165 = sum of:
            0.039342165 = weight(_text_:h in 6573) [ClassicSimilarity], result of:
              0.039342165 = score(doc=6573,freq=4.0), product of:
                0.12668294 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.05099035 = queryNorm
                0.31055614 = fieldWeight in 6573, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.0625 = fieldNorm(doc=6573)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    BuB. 53(2001) H.9, S.544-552

Types