-
González, L.; Campanario, J.M.: Structure of the impact factor of journals included in the Social Sciences Citation Index : citations from documents labeled "Editorial Material" (2007)
0.03
0.034704097 = product of:
0.05205614 = sum of:
0.04144622 = product of:
0.08289244 = sum of:
0.08289244 = weight(_text_:2007 in 75) [ClassicSimilarity], result of:
0.08289244 = score(doc=75,freq=5.0), product of:
0.1751764 = queryWeight, product of:
4.514535 = idf(docFreq=1315, maxDocs=44218)
0.038802754 = queryNorm
0.47319412 = fieldWeight in 75, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.514535 = idf(docFreq=1315, maxDocs=44218)
0.046875 = fieldNorm(doc=75)
0.5 = coord(1/2)
0.010609919 = product of:
0.031829756 = sum of:
0.031829756 = weight(_text_:29 in 75) [ClassicSimilarity], result of:
0.031829756 = score(doc=75,freq=2.0), product of:
0.13649596 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.038802754 = queryNorm
0.23319192 = fieldWeight in 75, 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=75)
0.33333334 = coord(1/3)
0.6666667 = coord(2/3)
- Date
- 3. 3.2007 18:29:17
- Source
- Journal of the American Society for Information Science and Technology. 58(2007) no.2, S.252-262
- Year
- 2007
-
Campanario, J.M.; Acedo, E.: Rejecting highly cited papers : the views of scientists who encounter resistance to their discoveries from other scientists (2007)
0.03
0.034704097 = product of:
0.05205614 = sum of:
0.04144622 = product of:
0.08289244 = sum of:
0.08289244 = weight(_text_:2007 in 273) [ClassicSimilarity], result of:
0.08289244 = score(doc=273,freq=5.0), product of:
0.1751764 = queryWeight, product of:
4.514535 = idf(docFreq=1315, maxDocs=44218)
0.038802754 = queryNorm
0.47319412 = fieldWeight in 273, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.514535 = idf(docFreq=1315, maxDocs=44218)
0.046875 = fieldNorm(doc=273)
0.5 = coord(1/2)
0.010609919 = product of:
0.031829756 = sum of:
0.031829756 = weight(_text_:29 in 273) [ClassicSimilarity], result of:
0.031829756 = score(doc=273,freq=2.0), product of:
0.13649596 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.038802754 = queryNorm
0.23319192 = fieldWeight in 273, 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=273)
0.33333334 = coord(1/3)
0.6666667 = coord(2/3)
- Date
- 29. 4.2007 20:18:05
- Source
- Journal of the American Society for Information Science and Technology. 58(2007) no.5, S.734-743
- Year
- 2007
-
Campanario, J.M.: Large increases and decreases in journal impact factors in only one year : the effect of journal self-citations (2011)
0.03
0.028565727 = product of:
0.04284859 = sum of:
0.030581702 = product of:
0.061163403 = sum of:
0.061163403 = weight(_text_:2007 in 4187) [ClassicSimilarity], result of:
0.061163403 = score(doc=4187,freq=2.0), product of:
0.1751764 = queryWeight, product of:
4.514535 = idf(docFreq=1315, maxDocs=44218)
0.038802754 = queryNorm
0.34915322 = fieldWeight in 4187, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.514535 = idf(docFreq=1315, maxDocs=44218)
0.0546875 = fieldNorm(doc=4187)
0.5 = coord(1/2)
0.012266888 = product of:
0.036800664 = sum of:
0.036800664 = weight(_text_:22 in 4187) [ClassicSimilarity], result of:
0.036800664 = score(doc=4187,freq=2.0), product of:
0.13588063 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.038802754 = queryNorm
0.2708308 = fieldWeight in 4187, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=4187)
0.33333334 = coord(1/3)
0.6666667 = coord(2/3)
- Abstract
- I studied the factors (citations, self-citations, and number of articles) that influenced large changes in only 1 year in the impact factors (IFs) of journals. A set of 360 instances of journals with large increases or decreases in their IFs from a given year to the following was selected from journals in the Journal Citation Reports from 1998 to 2007 (40 journals each year). The main factor influencing large changes was the change in the number of citations. About 54% of the increases and 42% of the decreases in the journal IFs were associated with changes in the journal self-citations.
- Date
- 22. 1.2011 12:53:00
-
Campanario, J.M.: Distribution of ranks of articles and citations in journals (2010)
0.01
0.014562715 = product of:
0.043688145 = sum of:
0.043688145 = product of:
0.08737629 = sum of:
0.08737629 = weight(_text_:2007 in 3340) [ClassicSimilarity], result of:
0.08737629 = score(doc=3340,freq=2.0), product of:
0.1751764 = queryWeight, product of:
4.514535 = idf(docFreq=1315, maxDocs=44218)
0.038802754 = queryNorm
0.49879032 = fieldWeight in 3340, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.514535 = idf(docFreq=1315, maxDocs=44218)
0.078125 = fieldNorm(doc=3340)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Abstract
- I studied the distribution of articles and citations in journals between 1998 and 2007 according to an empirical function with two exponents. These variables showed good fit to a beta function with two exponents.
