Search (5 results, page 1 of 1)

  • × author_ss:"Costas, R."
  1. Costas, R.; Perianes-Rodríguez, A.; Ruiz-Castillo, J.: On the quest for currencies of science : field "exchange rates" for citations and Mendeley readership (2017) 0.03
    0.030973978 = product of:
      0.061947957 = sum of:
        0.049499318 = weight(_text_:elektronisches in 4051) [ClassicSimilarity], result of:
          0.049499318 = score(doc=4051,freq=2.0), product of:
            0.22683781 = queryWeight, product of:
              4.937632 = idf(docFreq=861, maxDocs=44218)
              0.045940608 = queryNorm
            0.21821457 = fieldWeight in 4051, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.937632 = idf(docFreq=861, maxDocs=44218)
              0.03125 = fieldNorm(doc=4051)
        0.012448637 = product of:
          0.024897274 = sum of:
            0.024897274 = weight(_text_:22 in 4051) [ClassicSimilarity], result of:
              0.024897274 = score(doc=4051,freq=2.0), product of:
                0.16087618 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045940608 = 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)
          0.5 = coord(1/2)
      0.5 = coord(2/4)
    
    Date
    20. 1.2015 18:30:22
    Theme
    Elektronisches Publizieren
  2. Zahedi, Z.; Costas, R.; Wouters, P.: Mendeley readership as a filtering tool to identify highly cited publications (2017) 0.02
    0.015468536 = product of:
      0.061874144 = sum of:
        0.061874144 = weight(_text_:elektronisches in 3837) [ClassicSimilarity], result of:
          0.061874144 = score(doc=3837,freq=2.0), product of:
            0.22683781 = queryWeight, product of:
              4.937632 = idf(docFreq=861, maxDocs=44218)
              0.045940608 = queryNorm
            0.2727682 = fieldWeight in 3837, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.937632 = idf(docFreq=861, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3837)
      0.25 = coord(1/4)
    
    Theme
    Elektronisches Publizieren
  3. Fang, Z.; Dudek, J.; Costas, R.: ¬The stability of Twitter metrics : a study on unavailable Twitter mentions of scientific publications (2020) 0.02
    0.015468536 = product of:
      0.061874144 = sum of:
        0.061874144 = weight(_text_:elektronisches in 35) [ClassicSimilarity], result of:
          0.061874144 = score(doc=35,freq=2.0), product of:
            0.22683781 = queryWeight, product of:
              4.937632 = idf(docFreq=861, maxDocs=44218)
              0.045940608 = queryNorm
            0.2727682 = fieldWeight in 35, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.937632 = idf(docFreq=861, maxDocs=44218)
              0.0390625 = fieldNorm(doc=35)
      0.25 = coord(1/4)
    
    Theme
    Elektronisches Publizieren
  4. Costas, R.; Bordons, M.; Leeuwen, T.N. van; Raan, A.F.J. van: Scaling rules in the science system : Influence of field-specific citation characteristics on the impact of individual researchers (2009) 0.00
    0.0038901991 = product of:
      0.0155607965 = sum of:
        0.0155607965 = product of:
          0.031121593 = sum of:
            0.031121593 = weight(_text_:22 in 2759) [ClassicSimilarity], result of:
              0.031121593 = score(doc=2759,freq=2.0), product of:
                0.16087618 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045940608 = queryNorm
                0.19345059 = fieldWeight in 2759, 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=2759)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Date
    22. 3.2009 19:02:48
  5. 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) 0.00
    0.0038901991 = product of:
      0.0155607965 = sum of:
        0.0155607965 = product of:
          0.031121593 = sum of:
            0.031121593 = weight(_text_:22 in 2598) [ClassicSimilarity], result of:
              0.031121593 = score(doc=2598,freq=2.0), product of:
                0.16087618 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045940608 = 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)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Date
    20. 1.2015 18:30:22