Search (6 results, page 1 of 1)

  • × 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) 0.03
    0.026313884 = product of:
      0.05262777 = sum of:
        0.05262777 = sum of:
          0.027008435 = weight(_text_:p in 2598) [ClassicSimilarity], result of:
            0.027008435 = score(doc=2598,freq=2.0), product of:
              0.1359764 = queryWeight, product of:
                3.5955126 = idf(docFreq=3298, maxDocs=44218)
                0.037818365 = queryNorm
              0.19862589 = fieldWeight in 2598, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5955126 = idf(docFreq=3298, maxDocs=44218)
                0.0390625 = fieldNorm(doc=2598)
          0.025619334 = weight(_text_:22 in 2598) [ClassicSimilarity], result of:
            0.025619334 = score(doc=2598,freq=2.0), product of:
              0.13243347 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.037818365 = 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)
    
    Date
    20. 1.2015 18:30:22
  2. Costas, R.; Zahedi, Z.; Wouters, P.: Do "altmetrics" correlate with citations? : extensive comparison of altmetric indicators with citations from a multidisciplinary perspective (2015) 0.01
    0.0067521087 = product of:
      0.013504217 = sum of:
        0.013504217 = product of:
          0.027008435 = sum of:
            0.027008435 = weight(_text_:p in 2214) [ClassicSimilarity], result of:
              0.027008435 = score(doc=2214,freq=2.0), product of:
                0.1359764 = queryWeight, product of:
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.037818365 = queryNorm
                0.19862589 = fieldWeight in 2214, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2214)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  3. Zahedi, Z.; Costas, R.; Wouters, P.: Mendeley readership as a filtering tool to identify highly cited publications (2017) 0.01
    0.0067521087 = product of:
      0.013504217 = sum of:
        0.013504217 = product of:
          0.027008435 = sum of:
            0.027008435 = weight(_text_:p in 3837) [ClassicSimilarity], result of:
              0.027008435 = score(doc=3837,freq=2.0), product of:
                0.1359764 = queryWeight, product of:
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.037818365 = queryNorm
                0.19862589 = fieldWeight in 3837, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3837)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  4. Fang, Z.; Costas, R.; Tian, W.; Wang, X.; Wouters, P.: How is science clicked on Twitter? : click metrics for Bitly short links to scientific publications (2021) 0.01
    0.0067521087 = product of:
      0.013504217 = sum of:
        0.013504217 = product of:
          0.027008435 = sum of:
            0.027008435 = weight(_text_:p in 265) [ClassicSimilarity], result of:
              0.027008435 = score(doc=265,freq=2.0), product of:
                0.1359764 = queryWeight, product of:
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.037818365 = queryNorm
                0.19862589 = fieldWeight in 265, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=265)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  5. 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) 0.01
    0.0064048334 = product of:
      0.012809667 = sum of:
        0.012809667 = product of:
          0.025619334 = sum of:
            0.025619334 = weight(_text_:22 in 2759) [ClassicSimilarity], result of:
              0.025619334 = score(doc=2759,freq=2.0), product of:
                0.13243347 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037818365 = 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)
      0.5 = coord(1/2)
    
    Date
    22. 3.2009 19:02:48
  6. 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
    0.0051238667 = product of:
      0.010247733 = sum of:
        0.010247733 = product of:
          0.020495467 = sum of:
            0.020495467 = weight(_text_:22 in 4051) [ClassicSimilarity], result of:
              0.020495467 = score(doc=4051,freq=2.0), product of:
                0.13243347 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037818365 = 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(1/2)
    
    Date
    20. 1.2015 18:30:22