Search (5 results, page 1 of 1)

  • × year_i:[2010 TO 2020}
  • × author_ss:"Costas, R."
  1. Costas, R.; Zahedi, Z.; Wouters, P.: ¬The thematic orientation of publications mentioned on social media : large-scale disciplinary comparison of social media metrics with citations (2015) 0.02
    0.02084626 = product of:
      0.04169252 = sum of:
        0.04169252 = product of:
          0.06253878 = sum of:
            0.02402583 = weight(_text_:12 in 2598) [ClassicSimilarity], result of:
              0.02402583 = score(doc=2598,freq=2.0), product of:
                0.15724345 = queryWeight, product of:
                  2.765864 = idf(docFreq=7562, maxDocs=44218)
                  0.056851476 = queryNorm
                0.15279384 = fieldWeight in 2598, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.765864 = idf(docFreq=7562, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2598)
            0.03851295 = weight(_text_:22 in 2598) [ClassicSimilarity], result of:
              0.03851295 = score(doc=2598,freq=2.0), product of:
                0.19908418 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.056851476 = queryNorm
                0.19345059 = fieldWeight in 2598, 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=2598)
          0.6666667 = coord(2/3)
      0.5 = coord(1/2)
    
    Content
    Vgl.: https://doi.org/10.1108/AJIM-12-2014-0173.
    Date
    20. 1.2015 18:30:22
  2. Costas, R.; Perianes-Rodríguez, A.; Ruiz-Castillo, J.: On the quest for currencies of science : field "exchange rates" for citations and Mendeley readership (2017) 0.01
    0.0051350603 = product of:
      0.010270121 = sum of:
        0.010270121 = product of:
          0.03081036 = sum of:
            0.03081036 = weight(_text_:22 in 4051) [ClassicSimilarity], result of:
              0.03081036 = score(doc=4051,freq=2.0), product of:
                0.19908418 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.056851476 = queryNorm
                0.15476047 = fieldWeight in 4051, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03125 = fieldNorm(doc=4051)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    20. 1.2015 18:30:22
  3. Costas, R.; Leeuwen, T.N. van; Raan, A.F.J. van: Is scientific literature subject to a 'Sell-By-Date'? : a general methodology to analyze the 'durability' of scientific documents (2010) 0.00
    0.004004305 = product of:
      0.00800861 = sum of:
        0.00800861 = product of:
          0.02402583 = sum of:
            0.02402583 = weight(_text_:12 in 3333) [ClassicSimilarity], result of:
              0.02402583 = score(doc=3333,freq=2.0), product of:
                0.15724345 = queryWeight, product of:
                  2.765864 = idf(docFreq=7562, maxDocs=44218)
                  0.056851476 = queryNorm
                0.15279384 = fieldWeight in 3333, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.765864 = idf(docFreq=7562, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3333)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    31. 5.2010 15:02:12
  4. Costas, R.; Leeuwen, T.N. van; Bordons, M.: Referencing patterns of individual researchers : do top scientists rely on more extensive information sources? (2012) 0.00
    0.004004305 = product of:
      0.00800861 = sum of:
        0.00800861 = product of:
          0.02402583 = sum of:
            0.02402583 = weight(_text_:12 in 516) [ClassicSimilarity], result of:
              0.02402583 = score(doc=516,freq=2.0), product of:
                0.15724345 = queryWeight, product of:
                  2.765864 = idf(docFreq=7562, maxDocs=44218)
                  0.056851476 = queryNorm
                0.15279384 = fieldWeight in 516, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.765864 = idf(docFreq=7562, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=516)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    Journal of the American Society for Information Science and Technology. 63(2012) no.12, S.2433-2450
  5. Zahedi, Z.; Costas, R.; Wouters, P.: Mendeley readership as a filtering tool to identify highly cited publications (2017) 0.00
    0.004004305 = product of:
      0.00800861 = sum of:
        0.00800861 = product of:
          0.02402583 = sum of:
            0.02402583 = weight(_text_:12 in 3837) [ClassicSimilarity], result of:
              0.02402583 = score(doc=3837,freq=2.0), product of:
                0.15724345 = queryWeight, product of:
                  2.765864 = idf(docFreq=7562, maxDocs=44218)
                  0.056851476 = queryNorm
                0.15279384 = fieldWeight in 3837, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.765864 = idf(docFreq=7562, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3837)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    16.11.2017 12:59:52