-
Raan, A.F.J. van: Scaling rules in the science system : influence of field-specific citation characteristics on the impact of research groups (2008)
0.02
0.021128725 = product of:
0.04225745 = sum of:
0.04225745 = product of:
0.06338617 = sum of:
0.024351375 = weight(_text_:12 in 2758) [ClassicSimilarity], result of:
0.024351375 = score(doc=2758,freq=2.0), product of:
0.13281173 = queryWeight, product of:
2.765864 = idf(docFreq=7562, maxDocs=44218)
0.048018172 = queryNorm
0.1833526 = fieldWeight in 2758, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.765864 = idf(docFreq=7562, maxDocs=44218)
0.046875 = fieldNorm(doc=2758)
0.039034795 = weight(_text_:22 in 2758) [ClassicSimilarity], result of:
0.039034795 = score(doc=2758,freq=2.0), product of:
0.16815145 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.048018172 = queryNorm
0.23214069 = fieldWeight in 2758, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=2758)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 3.2009 19:03:12
-
Raan, A.F.J. van: Statistical properties of bibliometric indicators : research group indicator distributions and correlations (2006)
0.01
0.009200591 = product of:
0.018401181 = sum of:
0.018401181 = product of:
0.055203542 = sum of:
0.055203542 = weight(_text_:22 in 5275) [ClassicSimilarity], result of:
0.055203542 = score(doc=5275,freq=4.0), product of:
0.16815145 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.048018172 = queryNorm
0.32829654 = fieldWeight in 5275, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=5275)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Date
- 22. 7.2006 16:20:22
-
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
0.0054214997 = product of:
0.010842999 = sum of:
0.010842999 = product of:
0.032528996 = sum of:
0.032528996 = weight(_text_:22 in 2759) [ClassicSimilarity], result of:
0.032528996 = score(doc=2759,freq=2.0), product of:
0.16815145 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.048018172 = 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)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Date
- 22. 3.2009 19:02:48
-
Raan, A.F.J. van; Noyons, E.C.M.: Discovery of patterns of scientific and technological development and knowledge transfer (2002)
0.00
0.004783062 = product of:
0.009566124 = sum of:
0.009566124 = product of:
0.02869837 = sum of:
0.02869837 = weight(_text_:12 in 3603) [ClassicSimilarity], result of:
0.02869837 = score(doc=3603,freq=4.0), product of:
0.13281173 = queryWeight, product of:
2.765864 = idf(docFreq=7562, maxDocs=44218)
0.048018172 = queryNorm
0.21608311 = fieldWeight in 3603, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.765864 = idf(docFreq=7562, maxDocs=44218)
0.0390625 = fieldNorm(doc=3603)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Date
- 1. 7.2005 12:10:16
2. 7.2005 10:12:14
-
Raan, A.F.J. van: Scientometrics : state of the art (1997)
0.00
0.0047349897 = product of:
0.009469979 = sum of:
0.009469979 = product of:
0.028409937 = sum of:
0.028409937 = weight(_text_:12 in 409) [ClassicSimilarity], result of:
0.028409937 = score(doc=409,freq=2.0), product of:
0.13281173 = queryWeight, product of:
2.765864 = idf(docFreq=7562, maxDocs=44218)
0.048018172 = queryNorm
0.21391137 = fieldWeight in 409, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.765864 = idf(docFreq=7562, maxDocs=44218)
0.0546875 = fieldNorm(doc=409)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Date
- 2. 3.1997 12:16:21
-
Costas, R.; Leeuwen, T.N. van; Raan, A.F.J. van: Is scientific literature subject to a 'Sell-By-Date'? : a general methodology to analyze the 'durability' of scientific documents (2010)
0.00
0.0033821356 = product of:
0.0067642713 = sum of:
0.0067642713 = product of:
0.020292813 = sum of:
0.020292813 = weight(_text_:12 in 3333) [ClassicSimilarity], result of:
0.020292813 = score(doc=3333,freq=2.0), product of:
0.13281173 = queryWeight, product of:
2.765864 = idf(docFreq=7562, maxDocs=44218)
0.048018172 = queryNorm
0.15279384 = fieldWeight in 3333, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.765864 = idf(docFreq=7562, maxDocs=44218)
0.0390625 = fieldNorm(doc=3333)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Date
- 31. 5.2010 15:02:12
-
Waltman, L.; Calero-Medina, C.; Kosten, J.; Noyons, E.C.M.; Tijssen, R.J.W.; Eck, N.J. van; Leeuwen, T.N. van; Raan, A.F.J. van; Visser, M.S.; Wouters, P.: ¬The Leiden ranking 2011/2012 : data collection, indicators, and interpretation (2012)
0.00
0.0033821356 = product of:
0.0067642713 = sum of:
0.0067642713 = product of:
0.020292813 = sum of:
0.020292813 = weight(_text_:12 in 514) [ClassicSimilarity], result of:
0.020292813 = score(doc=514,freq=2.0), product of:
0.13281173 = queryWeight, product of:
2.765864 = idf(docFreq=7562, maxDocs=44218)
0.048018172 = queryNorm
0.15279384 = fieldWeight in 514, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.765864 = idf(docFreq=7562, maxDocs=44218)
0.0390625 = fieldNorm(doc=514)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science and Technology. 63(2012) no.12, S.2405-2418