Search (2 results, page 1 of 1)

  • × author_ss:"Li, K."
  • × theme_ss:"Informetrie"
  • × year_i:[2010 TO 2020}
  1. Zhao, M.; Yan, E.; Li, K.: Data set mentions and citations : a content analysis of full-text publications (2018) 0.00
    0.0013008491 = product of:
      0.02991953 = sum of:
        0.02991953 = sum of:
          0.009807767 = weight(_text_:1 in 4008) [ClassicSimilarity], result of:
            0.009807767 = score(doc=4008,freq=2.0), product of:
              0.06022775 = queryWeight, product of:
                2.4565027 = idf(docFreq=10304, maxDocs=44218)
                0.024517681 = queryNorm
              0.16284466 = fieldWeight in 4008, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4565027 = idf(docFreq=10304, maxDocs=44218)
                0.046875 = fieldNorm(doc=4008)
          0.020111762 = weight(_text_:29 in 4008) [ClassicSimilarity], result of:
            0.020111762 = score(doc=4008,freq=2.0), product of:
              0.08624554 = queryWeight, product of:
                3.5176873 = idf(docFreq=3565, maxDocs=44218)
                0.024517681 = queryNorm
              0.23319192 = fieldWeight in 4008, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5176873 = idf(docFreq=3565, maxDocs=44218)
                0.046875 = fieldNorm(doc=4008)
      0.04347826 = coord(1/23)
    
    Date
    18.12.2017 16:29:01
    Source
    Journal of the Association for Information Science and Technology. 69(2018) no.1, S.32-46
  2. Yan, E.; Li, K.: Which domains do open-access journals do best in? : a 5-year longitudinal study (2018) 0.00
    1.7767695E-4 = product of:
      0.00408657 = sum of:
        0.00408657 = product of:
          0.00817314 = sum of:
            0.00817314 = weight(_text_:1 in 4257) [ClassicSimilarity], result of:
              0.00817314 = score(doc=4257,freq=2.0), product of:
                0.06022775 = queryWeight, product of:
                  2.4565027 = idf(docFreq=10304, maxDocs=44218)
                  0.024517681 = queryNorm
                0.13570388 = fieldWeight in 4257, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4565027 = idf(docFreq=10304, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4257)
          0.5 = coord(1/2)
      0.04347826 = coord(1/23)
    
    Abstract
    Although researchers have begun to investigate the difference in scientific impact between closed-access and open-access journals, studies that focus specifically on dynamic and disciplinary differences remain scarce. This study serves to fill this gap by using a large longitudinal dataset to examine these differences. Using CiteScore as a proxy for journal scientific impact, we employ a series of statistical tests to identify the quartile categories and disciplinary areas in which impact trends differ notably between closed- and open-access journals. We find that closed-access journals have a noticeable advantage in social sciences (for example, business and economics), whereas open-access journals perform well in medical and healthcare domains (for example, health profession and nursing). Moreover, we find that after controlling for a journal's rank and disciplinary differences, there are statistically more closed-access journals in the top 10%, Quartile 1, and Quartile 2 categories as measured by CiteScore; in contrast, more open-access journals in Quartile 4 gained scientific impact from 2011 to 2015. Considering dynamic and disciplinary trends in tandem, we find that more closed-access journals in Social Sciences gained in impact, whereas in biochemistry and medicine, more open-access journals experienced such gains.

Authors