Search (8 results, page 1 of 1)

  • × author_ss:"Daniel, H.-D."
  • × theme_ss:"Informetrie"
  1. Bornmann, L.; Daniel, H.-D.: What do we know about the h index? (2007) 0.01
    0.010204115 = product of:
      0.02040823 = sum of:
        0.02040823 = product of:
          0.061224688 = sum of:
            0.061224688 = weight(_text_:h in 477) [ClassicSimilarity], result of:
              0.061224688 = score(doc=477,freq=16.0), product of:
                0.11265446 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.04534384 = queryNorm
                0.54347324 = fieldWeight in 477, product of:
                  4.0 = tf(freq=16.0), with freq of:
                    16.0 = termFreq=16.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=477)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Abstract
    Jorge Hirsch recently proposed the h index to quantify the research output of individual scientists. The new index has attracted a lot of attention in the scientific community. The claim that the h index in a single number provides a good representation of the scientific lifetime achievement of a scientist as well as the (supposed) simple calculation of the h index using common literature databases lead to the danger of improper use of the index. We describe the advantages and disadvantages of the h index and summarize the studies on the convergent validity of this index. We also introduce corrections and complements as well as single-number alternatives to the h index.
    Object
    H-Index
  2. Bornmann, L.; Schier, H.; Marx, W.; Daniel, H.-D.: Is interactive open access publishing able to identify high-impact submissions? : a study on the predictive validity of Atmospheric Chemistry and Physics by using percentile rank classes (2011) 0.00
    0.0036443267 = product of:
      0.0072886534 = sum of:
        0.0072886534 = product of:
          0.02186596 = sum of:
            0.02186596 = weight(_text_:h in 4132) [ClassicSimilarity], result of:
              0.02186596 = score(doc=4132,freq=4.0), product of:
                0.11265446 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.04534384 = queryNorm
                0.1940976 = fieldWeight in 4132, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4132)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
  3. Neuhaus, C.; Daniel, H.-D.: Data sources for performing citation analysis : an overview (2008) 0.00
    0.0036076994 = product of:
      0.007215399 = sum of:
        0.007215399 = product of:
          0.021646196 = sum of:
            0.021646196 = weight(_text_:h in 1735) [ClassicSimilarity], result of:
              0.021646196 = score(doc=1735,freq=2.0), product of:
                0.11265446 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.04534384 = queryNorm
                0.19214681 = fieldWeight in 1735, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=1735)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
  4. Mutz, R.; Daniel, H.-D.: What is behind the curtain of the Leiden Ranking? (2015) 0.00
    0.0030923137 = product of:
      0.0061846273 = sum of:
        0.0061846273 = product of:
          0.018553881 = sum of:
            0.018553881 = weight(_text_:h in 2171) [ClassicSimilarity], result of:
              0.018553881 = score(doc=2171,freq=2.0), product of:
                0.11265446 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.04534384 = queryNorm
                0.16469726 = fieldWeight in 2171, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2171)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
  5. Bornmann, L.; Daniel, H.-D.: Multiple publication on a single research study: does it pay? : The influence of number of research articles on total citation counts in biomedicine (2007) 0.00
    0.0025769281 = product of:
      0.0051538562 = sum of:
        0.0051538562 = product of:
          0.015461569 = sum of:
            0.015461569 = weight(_text_:h in 444) [ClassicSimilarity], result of:
              0.015461569 = score(doc=444,freq=2.0), product of:
                0.11265446 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.04534384 = queryNorm
                0.13724773 = fieldWeight in 444, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=444)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
  6. Bornmann, L.; Daniel, H.-D.: Universality of citation distributions : a validation of Radicchi et al.'s relative indicator cf = c/c0 at the micro level using data from chemistry (2009) 0.00
    0.0025769281 = product of:
      0.0051538562 = sum of:
        0.0051538562 = product of:
          0.015461569 = sum of:
            0.015461569 = weight(_text_:h in 2954) [ClassicSimilarity], result of:
              0.015461569 = score(doc=2954,freq=2.0), product of:
                0.11265446 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.04534384 = queryNorm
                0.13724773 = fieldWeight in 2954, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2954)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
  7. Mutz, R.; Wolbring, T.; Daniel, H.-D.: ¬The effect of the "very important paper" (VIP) designation in Angewandte Chemie International Edition on citation impact : a propensity score matching analysis (2017) 0.00
    0.0025769281 = product of:
      0.0051538562 = sum of:
        0.0051538562 = product of:
          0.015461569 = sum of:
            0.015461569 = weight(_text_:h in 3792) [ClassicSimilarity], result of:
              0.015461569 = score(doc=3792,freq=2.0), product of:
                0.11265446 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.04534384 = queryNorm
                0.13724773 = fieldWeight in 3792, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3792)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
  8. Bornmann, L.; Daniel, H.-D.: Selecting manuscripts for a high-impact journal through peer review : a citation analysis of communications that were accepted by Angewandte Chemie International Edition, or rejected but published elsewhere (2008) 0.00
    0.0020615426 = product of:
      0.004123085 = sum of:
        0.004123085 = product of:
          0.012369255 = sum of:
            0.012369255 = weight(_text_:h in 2381) [ClassicSimilarity], result of:
              0.012369255 = score(doc=2381,freq=2.0), product of:
                0.11265446 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.04534384 = queryNorm
                0.10979818 = fieldWeight in 2381, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.03125 = fieldNorm(doc=2381)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)