Search (2 results, page 1 of 1)

  • × year_i:[2000 TO 2010}
  • × author_ss:"Tenopir, C."
  1. Tenopir, C.: Online systems for information access and retrieval (2008) 0.02 
    0.022434268 = product of:
  0.11217134 = sum of:
    0.11217134 = weight(_text_:books in 5587) [ClassicSimilarity], result of:
      0.11217134 = score(doc=5587,freq=4.0), product of:
        0.24756333 = queryWeight, product of:
          4.8330836 = idf(docFreq=956, maxDocs=44218)
          0.051222645 = queryNorm
        0.45310158 = fieldWeight in 5587, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.8330836 = idf(docFreq=956, maxDocs=44218)
          0.046875 = fieldNorm(doc=5587)
  0.2 = coord(1/5)
    Abstract
    In 1973 F. W. Lancaster published the first textbook about online information retrieval (with E. G. Fayen). That text and his later writings and books on the topics relating to online searching set the precedent for many books to follow. His early work also advocated many changes to the state-of-the-art systems and anticipated many of the characteristics of modern online information retrieval systems. Although the basic underlying structure of modern systems is still similar to what Lancaster wrote about thirty years ago, many of the changes he advocated have occurred. From an era of bibliographic databases on command-driven systems searched by library professionals, online systems have evolved to have friendlier interfaces, include full texts or links to full texts, and are targeted to the end users of the information. The information industry has evolved, as have the online search systems and tools that are so commonplace today.
  2. Allard, S.; Levine, K.J.; Tenopir, C.: Design engineers and technical professionals at work : observing information usage in the workplace (2009) 0.01 
    0.006939962 = product of:
  0.03469981 = sum of:
    0.03469981 = weight(_text_:22 in 2735) [ClassicSimilarity], result of:
      0.03469981 = score(doc=2735,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.19345059 = fieldWeight in 2735, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2735)
  0.2 = coord(1/5)
    Date
    22. 3.2009 12:43:37

Authors