Search (9 results, page 1 of 1)

  • × theme_ss:"Informetrie"
  • × theme_ss:"Internet"
  1. Bar-Ilan, J.; Peritz, B.C.: Evolution, continuity, and disappearance of documents on a specific topic an the Web : a longitudinal study of "informetrics" (2004) 0.02
    0.023086136 = product of:
      0.046172272 = sum of:
        0.046172272 = product of:
          0.092344545 = sum of:
            0.092344545 = weight(_text_:2003 in 2886) [ClassicSimilarity], result of:
              0.092344545 = score(doc=2886,freq=4.0), product of:
                0.19453894 = queryWeight, product of:
                  4.339969 = idf(docFreq=1566, maxDocs=44218)
                  0.044824958 = queryNorm
                0.47468412 = fieldWeight in 2886, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  4.339969 = idf(docFreq=1566, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=2886)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    The present paper analyzes the changes that occurred to a set of Web pages related to "informetrics" over a period of 5 years between June 1998 and June 2003. Four times during this time span, in 1998,1999, 2002, and 2003, we monitored previously located pages and searched for new ones related to the topic. Thus, we were able to study the growth of the topic, white analyzing the rates of change and disappearance. The results indicate that modification, disappearance, and resurfacing cannot be ignored when studying the structure and development of the Web.
  2. Vaughan, L.; Thelwall, M.: Scholarly use of the Web : what are the key inducers of links to journal Web sites? (2003) 0.02
    0.01843649 = product of:
      0.03687298 = sum of:
        0.03687298 = product of:
          0.07374596 = sum of:
            0.07374596 = weight(_text_:2003 in 1236) [ClassicSimilarity], result of:
              0.07374596 = score(doc=1236,freq=5.0), product of:
                0.19453894 = queryWeight, product of:
                  4.339969 = idf(docFreq=1566, maxDocs=44218)
                  0.044824958 = queryNorm
                0.3790807 = fieldWeight in 1236, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.339969 = idf(docFreq=1566, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=1236)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of the American Society for Information Science and technology. 54(2003) no.1, S.29-38
    Year
    2003
  3. Vaughan, L.; Shaw , D.: Bibliographic and Web citations : what Is the difference? (2003) 0.02
    0.01843649 = product of:
      0.03687298 = sum of:
        0.03687298 = product of:
          0.07374596 = sum of:
            0.07374596 = weight(_text_:2003 in 5176) [ClassicSimilarity], result of:
              0.07374596 = score(doc=5176,freq=5.0), product of:
                0.19453894 = queryWeight, product of:
                  4.339969 = idf(docFreq=1566, maxDocs=44218)
                  0.044824958 = queryNorm
                0.3790807 = fieldWeight in 5176, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.339969 = idf(docFreq=1566, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=5176)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of the American Society for Information Science and technology. 54(2003) no.14, S.1313-1324
    Year
    2003
  4. Thelwall, M.; Ruschenburg, T.: Grundlagen und Forschungsfelder der Webometrie (2006) 0.01
    0.012146326 = product of:
      0.024292652 = sum of:
        0.024292652 = product of:
          0.048585303 = sum of:
            0.048585303 = weight(_text_:22 in 77) [ClassicSimilarity], result of:
              0.048585303 = score(doc=77,freq=2.0), product of:
                0.15696937 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044824958 = queryNorm
                0.30952093 = fieldWeight in 77, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0625 = fieldNorm(doc=77)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    4.12.2006 12:12:22
  5. Goh, D.H.-L.; Ng, P.K.: Link decay in leading information science journals (2007) 0.01
    0.01166026 = product of:
      0.02332052 = sum of:
        0.02332052 = product of:
          0.04664104 = sum of:
            0.04664104 = weight(_text_:2003 in 1334) [ClassicSimilarity], result of:
              0.04664104 = score(doc=1334,freq=2.0), product of:
                0.19453894 = queryWeight, product of:
                  4.339969 = idf(docFreq=1566, maxDocs=44218)
                  0.044824958 = queryNorm
                0.2397517 = fieldWeight in 1334, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.339969 = idf(docFreq=1566, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=1334)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    Web citations have become common in scholarly publications as the amount of online literature increases. Yet, such links are not persistent and many decay over time, causing accessibility problems for readers. The present study investigates the link decay phenomenon in three leading information science journals. Articles spanning a period of 7 years (1997-2003) were downloaded, and their links were extracted. From these, a measure of link decay, the half-life, was computed to be approximately 5 years, which compares favorably against other disciplines (1.4-4.8 years). The study also investigated types of link accessibility errors encountered as well as examined characteristics of links that may be associated with decay. It was found that approximately 31% of all citations were not accessible during the time of testing, and the majority of errors were due to missing content (HTTP Error Code 404). Citations from the edu domain were also found to have the highest failure rates of 36% when compared with other popular top-level domains. Results indicate that link decay is a problem that cannot be ignored, and implications for journal authors and readers are discussed.
  6. Zhang, Y.: ¬The impact of Internet-based electronic resources on formal scholarly communication in the area of library and information science : a citation analysis (1998) 0.01
    0.010735936 = product of:
      0.021471873 = sum of:
        0.021471873 = product of:
          0.042943746 = sum of:
            0.042943746 = weight(_text_:22 in 2808) [ClassicSimilarity], result of:
              0.042943746 = score(doc=2808,freq=4.0), product of:
                0.15696937 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044824958 = queryNorm
                0.27358043 = fieldWeight in 2808, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2808)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    30. 1.1999 17:22:22
  7. Neth, M.: Citation analysis and the Web (1998) 0.01
    0.010628035 = product of:
      0.02125607 = sum of:
        0.02125607 = product of:
          0.04251214 = sum of:
            0.04251214 = weight(_text_:22 in 108) [ClassicSimilarity], result of:
              0.04251214 = score(doc=108,freq=2.0), product of:
                0.15696937 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044824958 = queryNorm
                0.2708308 = fieldWeight in 108, 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=108)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    10. 1.1999 16:22:37
  8. Tonta, Y.: Scholarly communication and the use of networked information sources (1996) 0.01
    0.009109745 = product of:
      0.01821949 = sum of:
        0.01821949 = product of:
          0.03643898 = sum of:
            0.03643898 = weight(_text_:22 in 6389) [ClassicSimilarity], result of:
              0.03643898 = score(doc=6389,freq=2.0), product of:
                0.15696937 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044824958 = queryNorm
                0.23214069 = fieldWeight in 6389, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=6389)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    IFLA journal. 22(1996) no.3, S.240-245
  9. Zhang, Y.; Jansen, B.J.; Spink, A.: Identification of factors predicting clickthrough in Web searching using neural network analysis (2009) 0.01
    0.009109745 = product of:
      0.01821949 = sum of:
        0.01821949 = product of:
          0.03643898 = sum of:
            0.03643898 = weight(_text_:22 in 2742) [ClassicSimilarity], result of:
              0.03643898 = score(doc=2742,freq=2.0), product of:
                0.15696937 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044824958 = queryNorm
                0.23214069 = fieldWeight in 2742, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2742)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 3.2009 17:49:11