-
Leydesdorff, L.; Heimeriks, G.: ¬The self-organization of the European information society : the case of "biotechnology" (2001)
0.06
0.05669628 = product of:
0.11339256 = sum of:
0.038198393 = weight(_text_:l in 6524) [ClassicSimilarity], result of:
0.038198393 = score(doc=6524,freq=2.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.2195706 = fieldWeight in 6524, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.0390625 = fieldNorm(doc=6524)
0.075194165 = weight(_text_:van in 6524) [ClassicSimilarity], result of:
0.075194165 = score(doc=6524,freq=2.0), product of:
0.24408463 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.043769516 = queryNorm
0.30806595 = fieldWeight in 6524, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0390625 = fieldNorm(doc=6524)
0.5 = coord(2/4)
- Footnote
- Vgl. auch die Stellungnahme von P. van den Besselaar: Empirical evidence of self-organization? in: JASIST 54(2003) no.1, S.87-90.
-
Leydesdorff, L.; Perevodchikov, E.; Uvarov, A.: Measuring triple-helix synergy in the Russian innovation systems at regional, provincial, and national levels (2015)
0.06
0.05669628 = product of:
0.11339256 = sum of:
0.038198393 = weight(_text_:l in 1857) [ClassicSimilarity], result of:
0.038198393 = score(doc=1857,freq=2.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.2195706 = fieldWeight in 1857, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.0390625 = fieldNorm(doc=1857)
0.075194165 = weight(_text_:van in 1857) [ClassicSimilarity], result of:
0.075194165 = score(doc=1857,freq=2.0), product of:
0.24408463 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.043769516 = queryNorm
0.30806595 = fieldWeight in 1857, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0390625 = fieldNorm(doc=1857)
0.5 = coord(2/4)
- Abstract
- We measure synergy for the Russian national, provincial, and regional innovation systems as reduction of uncertainty using mutual information among the 3 distributions of firm sizes, technological knowledge bases of firms, and geographical locations. Half a million units of data at firm level in 2011 were obtained from the OrbisT database of Bureau Van Dijk. The firm level data were aggregated at the levels of 8 Federal Districts, the regional level of 83 Federal Subjects, and the single level of the Russian Federation. Not surprisingly, the knowledge base of the economy is concentrated in the Moscow region (22.8%) and Saint Petersburg (4.0%). Except in Moscow itself, high-tech manufacturing does not add synergy to any other unit at any of the various levels of geographical granularity; instead it disturbs regional coordination. Knowledge-intensive services (KIS; including laboratories) contribute to the synergy in all Federal Districts (except the North-Caucasian Federal District), but only in 30 of the 83 Federal Subjects. The synergy in KIS is concentrated in centers of administration. The knowledge-intensive services (which are often state affiliated) provide backbone to an emerging knowledge-based economy at the level of Federal Districts, but the economy is otherwise not knowledge based (except for the Moscow region).
-
Leydesdorff, L.; Bornmann, L.; Wagner, C.S.: ¬The relative influences of government funding and international collaboration on citation impact (2019)
0.04
0.04130766 = product of:
0.08261532 = sum of:
0.06482483 = weight(_text_:l in 4681) [ClassicSimilarity], result of:
0.06482483 = score(doc=4681,freq=4.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.37262368 = fieldWeight in 4681, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.046875 = fieldNorm(doc=4681)
0.017790494 = product of:
0.03558099 = sum of:
0.03558099 = weight(_text_:22 in 4681) [ClassicSimilarity], result of:
0.03558099 = score(doc=4681,freq=2.0), product of:
0.15327339 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.043769516 = queryNorm
0.23214069 = fieldWeight in 4681, 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=4681)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Date
- 8. 1.2019 18:22:45
-
Leydesdorff, L.; Bornmann, L.: How fractional counting of citations affects the impact factor : normalization in terms of differences in citation potentials among fields of science (2011)
0.03
0.03442305 = product of:
0.0688461 = sum of:
0.054020684 = weight(_text_:l in 4186) [ClassicSimilarity], result of:
0.054020684 = score(doc=4186,freq=4.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.31051973 = fieldWeight in 4186, 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=4186)
0.014825413 = product of:
0.029650826 = sum of:
0.029650826 = weight(_text_:22 in 4186) [ClassicSimilarity], result of:
0.029650826 = score(doc=4186,freq=2.0), product of:
0.15327339 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.043769516 = queryNorm
0.19345059 = fieldWeight in 4186, 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=4186)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Date
- 22. 1.2011 12:51:07
-
Bornmann, L.; Leydesdorff, L.: Statistical tests and research assessments : a comment on Schneider (2012) (2013)
0.03
0.032412414 = product of:
0.12964965 = sum of:
0.12964965 = weight(_text_:l in 752) [ClassicSimilarity], result of:
0.12964965 = score(doc=752,freq=4.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.74524736 = fieldWeight in 752, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.09375 = fieldNorm(doc=752)
0.25 = coord(1/4)
-
Leydesdorff, L.; Wagner, C,; Bornmann, L.: Replicability and the public/private divide (2016)
0.03
0.032412414 = product of:
0.12964965 = sum of:
0.12964965 = weight(_text_:l in 3023) [ClassicSimilarity], result of:
0.12964965 = score(doc=3023,freq=4.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.74524736 = fieldWeight in 3023, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.09375 = fieldNorm(doc=3023)
0.25 = coord(1/4)
-
Leydesdorff, L.: ¬The construction and globalization of the knowledge base in inter-human communication systems (2003)
0.03
0.03181428 = product of:
0.06362856 = sum of:
0.04583807 = weight(_text_:l in 1621) [ClassicSimilarity], result of:
0.04583807 = score(doc=1621,freq=2.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.26348472 = fieldWeight in 1621, 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=1621)
0.017790494 = product of:
0.03558099 = sum of:
0.03558099 = weight(_text_:22 in 1621) [ClassicSimilarity], result of:
0.03558099 = score(doc=1621,freq=2.0), product of:
0.15327339 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.043769516 = queryNorm
0.23214069 = fieldWeight in 1621, 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=1621)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Date
- 22. 5.2003 19:48:04
-
Leydesdorff, L.: Can networks of journal-journal citations be used as indicators of change in the social sciences? (2003)
0.03
0.03181428 = product of:
0.06362856 = sum of:
0.04583807 = weight(_text_:l in 4460) [ClassicSimilarity], result of:
0.04583807 = score(doc=4460,freq=2.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.26348472 = fieldWeight in 4460, 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=4460)
0.017790494 = product of:
0.03558099 = sum of:
0.03558099 = weight(_text_:22 in 4460) [ClassicSimilarity], result of:
0.03558099 = score(doc=4460,freq=2.0), product of:
0.15327339 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.043769516 = queryNorm
0.23214069 = fieldWeight in 4460, 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=4460)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Date
- 6.11.2005 19:02:22
-
Leydesdorff, L.; Sun, Y.: National and international dimensions of the Triple Helix in Japan : university-industry-government versus international coauthorship relations (2009)
0.03
0.03181428 = product of:
0.06362856 = sum of:
0.04583807 = weight(_text_:l in 2761) [ClassicSimilarity], result of:
0.04583807 = score(doc=2761,freq=2.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.26348472 = fieldWeight in 2761, 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=2761)
0.017790494 = product of:
0.03558099 = sum of:
0.03558099 = weight(_text_:22 in 2761) [ClassicSimilarity], result of:
0.03558099 = score(doc=2761,freq=2.0), product of:
0.15327339 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.043769516 = queryNorm
0.23214069 = fieldWeight in 2761, 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=2761)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Date
- 22. 3.2009 19:07:20
-
Hellsten, I.; Leydesdorff, L.: ¬The construction of interdisciplinarity : the development of the knowledge base and programmatic focus of the journal Climatic Change, 1977-2013 (2016)
0.03
0.026511904 = product of:
0.053023808 = sum of:
0.038198393 = weight(_text_:l in 3089) [ClassicSimilarity], result of:
0.038198393 = score(doc=3089,freq=2.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.2195706 = fieldWeight in 3089, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.0390625 = fieldNorm(doc=3089)
0.014825413 = product of:
0.029650826 = sum of:
0.029650826 = weight(_text_:22 in 3089) [ClassicSimilarity], result of:
0.029650826 = score(doc=3089,freq=2.0), product of:
0.15327339 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.043769516 = queryNorm
0.19345059 = fieldWeight in 3089, 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=3089)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Date
- 24. 8.2016 17:53:22
-
Leydesdorff, L.; Johnson, M.W.; Ivanova, I.: Toward a calculus of redundancy : signification, codification, and anticipation in cultural evolution (2018)
0.03
0.026511904 = product of:
0.053023808 = sum of:
0.038198393 = weight(_text_:l in 4463) [ClassicSimilarity], result of:
0.038198393 = score(doc=4463,freq=2.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.2195706 = fieldWeight in 4463, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.0390625 = fieldNorm(doc=4463)
0.014825413 = product of:
0.029650826 = sum of:
0.029650826 = weight(_text_:22 in 4463) [ClassicSimilarity], result of:
0.029650826 = score(doc=4463,freq=2.0), product of:
0.15327339 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.043769516 = queryNorm
0.19345059 = fieldWeight in 4463, 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=4463)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Date
- 29. 9.2018 11:22:09
-
Leydesdorff, L.: Should co-occurrence data be normalized : a rejoinder (2007)
0.02
0.022919035 = product of:
0.09167614 = sum of:
0.09167614 = weight(_text_:l in 627) [ClassicSimilarity], result of:
0.09167614 = score(doc=627,freq=2.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.52696943 = fieldWeight in 627, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.09375 = fieldNorm(doc=627)
0.25 = coord(1/4)
-
Leydesdorff, L.: Accounting for the uncertainty in the evaluation of percentile ranks (2012)
0.02
0.022919035 = product of:
0.09167614 = sum of:
0.09167614 = weight(_text_:l in 447) [ClassicSimilarity], result of:
0.09167614 = score(doc=447,freq=2.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.52696943 = fieldWeight in 447, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.09375 = fieldNorm(doc=447)
0.25 = coord(1/4)
-
Marx, W.; Bornmann, L.; Barth, A.; Leydesdorff, L.: Detecting the historical roots of research fields by reference publication year spectroscopy (RPYS) (2014)
0.02
0.01890724 = product of:
0.07562896 = sum of:
0.07562896 = weight(_text_:l in 1238) [ClassicSimilarity], result of:
0.07562896 = score(doc=1238,freq=4.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.4347276 = fieldWeight in 1238, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.0546875 = fieldNorm(doc=1238)
0.25 = coord(1/4)
-
Egghe, L.; Leydesdorff, L.: ¬The relation between Pearson's correlation coefficient r and Salton's cosine measure (2009)
0.02
0.016206207 = product of:
0.06482483 = sum of:
0.06482483 = weight(_text_:l in 2803) [ClassicSimilarity], result of:
0.06482483 = score(doc=2803,freq=4.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.37262368 = fieldWeight in 2803, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.046875 = fieldNorm(doc=2803)
0.25 = coord(1/4)
-
Leydesdorff, L.; Bornmann, L.; Mutz, R.; Opthof, T.: Turning the tables on citation analysis one more time : principles for comparing sets of documents (2011)
0.02
0.016206207 = product of:
0.06482483 = sum of:
0.06482483 = weight(_text_:l in 4485) [ClassicSimilarity], result of:
0.06482483 = score(doc=4485,freq=4.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.37262368 = fieldWeight in 4485, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.046875 = fieldNorm(doc=4485)
0.25 = coord(1/4)
-
Bornmann, L.; Leydesdorff, L.: Which cities produce more excellent papers than can be expected? : a new mapping approach, using Google Maps, based on statistical significance testing (2011)
0.02
0.016206207 = product of:
0.06482483 = sum of:
0.06482483 = weight(_text_:l in 4767) [ClassicSimilarity], result of:
0.06482483 = score(doc=4767,freq=4.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.37262368 = fieldWeight in 4767, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.046875 = fieldNorm(doc=4767)
0.25 = coord(1/4)
-
Leydesdorff, L.; Bornmann, L.: Mapping (USPTO) patent data using overlays to Google Maps (2012)
0.02
0.016206207 = product of:
0.06482483 = sum of:
0.06482483 = weight(_text_:l in 288) [ClassicSimilarity], result of:
0.06482483 = score(doc=288,freq=4.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.37262368 = fieldWeight in 288, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.046875 = fieldNorm(doc=288)
0.25 = coord(1/4)
-
Leydesdorff, L.; Radicchi, F.; Bornmann, L.; Castellano, C.; Nooy, W. de: Field-normalized impact factors (IFs) : a comparison of rescaling and fractionally counted IFs (2013)
0.02
0.016206207 = product of:
0.06482483 = sum of:
0.06482483 = weight(_text_:l in 1108) [ClassicSimilarity], result of:
0.06482483 = score(doc=1108,freq=4.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.37262368 = fieldWeight in 1108, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.046875 = fieldNorm(doc=1108)
0.25 = coord(1/4)
-
Leydesdorff, L.; Bornmann, L.: ¬The operationalization of "fields" as WoS subject categories (WCs) in evaluative bibliometrics : the cases of "library and information science" and "science & technology studies" (2016)
0.02
0.016206207 = product of:
0.06482483 = sum of:
0.06482483 = weight(_text_:l in 2779) [ClassicSimilarity], result of:
0.06482483 = score(doc=2779,freq=4.0), product of:
0.17396861 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.043769516 = queryNorm
0.37262368 = fieldWeight in 2779, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.046875 = fieldNorm(doc=2779)
0.25 = coord(1/4)
