-
Leydesdorff, L.; Zhou, P.; Bornmann, L.: How can journal impact factors be normalized across fields of science? : An assessment in terms of percentile ranks and fractional counts (2013)
0.02
0.016043874 = product of:
0.032087747 = sum of:
0.032087747 = product of:
0.064175494 = sum of:
0.064175494 = weight(_text_:l in 532) [ClassicSimilarity], result of:
0.064175494 = score(doc=532,freq=4.0), product of:
0.20667124 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.05199731 = queryNorm
0.31051973 = fieldWeight in 532, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.0390625 = fieldNorm(doc=532)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Zhou, P.; Leydesdorff, L.: ¬A comparison between the China Scientific and Technical Papers and Citations Database and the Science Citation Index in terms of journal hierarchies and interjournal citation relations (2007)
0.01
0.0136136785 = product of:
0.027227357 = sum of:
0.027227357 = product of:
0.054454714 = sum of:
0.054454714 = weight(_text_:l in 70) [ClassicSimilarity], result of:
0.054454714 = score(doc=70,freq=2.0), product of:
0.20667124 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.05199731 = queryNorm
0.26348472 = fieldWeight in 70, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.046875 = fieldNorm(doc=70)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Zhou, P.; Su, X.; Leydesdorff, L.: ¬A comparative study on communication structures of Chinese journals in the social sciences (2010)
0.01
0.0136136785 = product of:
0.027227357 = sum of:
0.027227357 = product of:
0.054454714 = sum of:
0.054454714 = weight(_text_:l in 3580) [ClassicSimilarity], result of:
0.054454714 = score(doc=3580,freq=2.0), product of:
0.20667124 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.05199731 = queryNorm
0.26348472 = fieldWeight in 3580, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.046875 = fieldNorm(doc=3580)
0.5 = coord(1/2)
0.5 = coord(1/2)