-
¬Die deutsche Zeitschrift für Dokumentation, Informationswissenschaft und Informationspraxis von 1950 bis 2011 : eine vorläufige Bilanz in vier Abschnitten (2012)
0.04
0.043695778 = product of:
0.101956815 = sum of:
0.04064794 = weight(_text_:p in 402) [ClassicSimilarity], result of:
0.04064794 = score(doc=402,freq=4.0), product of:
0.12058865 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.033538654 = queryNorm
0.33707932 = fieldWeight in 402, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.046875 = fieldNorm(doc=402)
0.0476768 = weight(_text_:u in 402) [ClassicSimilarity], result of:
0.0476768 = score(doc=402,freq=8.0), product of:
0.109820455 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.033538654 = queryNorm
0.43413407 = fieldWeight in 402, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.046875 = fieldNorm(doc=402)
0.013632074 = product of:
0.027264148 = sum of:
0.027264148 = weight(_text_:22 in 402) [ClassicSimilarity], result of:
0.027264148 = score(doc=402,freq=2.0), product of:
0.11744665 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.033538654 = queryNorm
0.23214069 = fieldWeight in 402, 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=402)
0.5 = coord(1/2)
0.42857143 = coord(3/7)
- Date
- 22. 7.2012 19:35:26
- Footnote
- Besteht aus 4 Teilen: Teil 1: Eden, D., A. Arndt, A. Hoffer, T. Raschke u. P. Schön: Die Nachrichten für Dokumentation in den Jahren 1950 bis 1962 (S.159-163). Teil 2: Brose, M., E. durst, D. Nitzsche, D. Veckenstedt u. R. Wein: Statistische Untersuchung der Fachzeitschrift "Nachrichten für Dokumentation" (NfD) 1963-1975 (S.164-170). Teil 3: Bösel, J., G. Ebert, P. Garz,, M. Iwanow u. B. Russ: Methoden und Ergebnisse einer statistischen Auswertung der Fachzeitschrift "Nachrichten für Dokumentation" (NfD) 1976 bis 1988 (S.171-174). Teil 4: Engelage, H., S. Jansen, R. Mertins, K. Redel u. S. Ring: Statistische Untersuchung der Fachzeitschrift "Nachrichten für Dokumentation" (NfD) / "Information. Wissenschaft & Praxis" (IWP) 1989-2011 (S.164-170).
-
Hayer, L.: Lazarsfeld zitiert : eine bibliometrische Analyse (2008)
0.04
0.037693102 = product of:
0.08795057 = sum of:
0.052638482 = product of:
0.105276965 = sum of:
0.105276965 = weight(_text_:p.f in 1934) [ClassicSimilarity], result of:
0.105276965 = score(doc=1934,freq=2.0), product of:
0.2528145 = queryWeight, product of:
7.538004 = idf(docFreq=63, maxDocs=44218)
0.033538654 = queryNorm
0.4164198 = fieldWeight in 1934, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
7.538004 = idf(docFreq=63, maxDocs=44218)
0.0390625 = fieldNorm(doc=1934)
0.5 = coord(1/2)
0.02395203 = weight(_text_:p in 1934) [ClassicSimilarity], result of:
0.02395203 = score(doc=1934,freq=2.0), product of:
0.12058865 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.033538654 = queryNorm
0.19862589 = fieldWeight in 1934, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.0390625 = fieldNorm(doc=1934)
0.011360062 = product of:
0.022720125 = sum of:
0.022720125 = weight(_text_:22 in 1934) [ClassicSimilarity], result of:
0.022720125 = score(doc=1934,freq=2.0), product of:
0.11744665 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.033538654 = queryNorm
0.19345059 = fieldWeight in 1934, 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=1934)
0.5 = coord(1/2)
0.42857143 = coord(3/7)
- Abstract
- Um sich einer Antwort auf die Frage anzunähern, welche Bedeutung der Nachlass eines Wissenschaftlers wie jener Paul F. Lazarsfelds (mit zahlreichen noch unveröffentlichten Schriften) für die aktuelle Forschung haben könne, kann untersucht werden, wie häufig dieser Wissenschaftler zitiert wird. Wenn ein Autor zitiert wird, wird er auch genutzt. Wird er über einen langen Zeitraum oft genutzt, ist vermutlich auch die Auseinandersetzung mit seinem Nachlass von Nutzen. Außerdem kann aufgrund der Zitierungen festgestellt werden, was aus dem Lebenswerk eines Wissenschaftlers für die aktuelle Forschung relevant erscheint. Daraus können die vordringlichen Fragestellungen in der Bearbeitung des Nachlasses abgeleitet werden. Die Aufgabe für die folgende Untersuchung lautete daher: Wie oft wird Paul F. Lazarsfeld zitiert? Dabei interessierte auch: Wer zitiert wo? Die Untersuchung wurde mit Hilfe der Meta-Datenbank "ISI Web of Knowledge" durchgeführt. In dieser wurde im "Web of Science" mit dem Werkzeug "Cited Reference Search" nach dem zitierten Autor (Cited Author) "Lazarsfeld P*" gesucht. Diese Suche ergab 1535 Referenzen (References). Werden alle Referenzen gewählt, führt dies zu 4839 Ergebnissen (Results). Dabei wurden die Datenbanken SCI-Expanded, SSCI und A&HCI verwendet. Bei dieser Suche wurden die Publikationsjahre 1941-2008 analysiert. Vor 1956 wurden allerdings nur sehr wenige Zitate gefunden: 1946 fünf, ansonsten maximal drei, 1942-1944 und 1949 überhaupt keines. Zudem ist das Jahr 2008 noch lange nicht zu Ende. (Es gab jedoch schon vor Ende März 24 Zitate!)
- Biographed
- Lazarsfeld, P.F.
- Date
- 22. 6.2008 12:54:12
-
Mulkay, M.J.: Sociology of the scientific research community (1977)
0.04
0.03697815 = product of:
0.12942353 = sum of:
0.055622935 = weight(_text_:u in 284) [ClassicSimilarity], result of:
0.055622935 = score(doc=284,freq=2.0), product of:
0.109820455 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.033538654 = queryNorm
0.50648975 = fieldWeight in 284, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.109375 = fieldNorm(doc=284)
0.07380059 = weight(_text_:i in 284) [ClassicSimilarity], result of:
0.07380059 = score(doc=284,freq=2.0), product of:
0.12649874 = queryWeight, product of:
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.033538654 = queryNorm
0.58340967 = fieldWeight in 284, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.109375 = fieldNorm(doc=284)
0.2857143 = coord(2/7)
- Source
- Science, technology and society: a cross-disciplinary perspective. Ed: I. Spiegel-Rosing u. D. de Solla Price
-
Bookstein, A.: Informetric distributions : I. Unified overview (1990)
0.03
0.030173933 = product of:
0.10560876 = sum of:
0.07380059 = weight(_text_:i in 6902) [ClassicSimilarity], result of:
0.07380059 = score(doc=6902,freq=2.0), product of:
0.12649874 = queryWeight, product of:
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.033538654 = queryNorm
0.58340967 = fieldWeight in 6902, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.109375 = fieldNorm(doc=6902)
0.03180817 = product of:
0.06361634 = sum of:
0.06361634 = weight(_text_:22 in 6902) [ClassicSimilarity], result of:
0.06361634 = score(doc=6902,freq=2.0), product of:
0.11744665 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.033538654 = queryNorm
0.5416616 = fieldWeight in 6902, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=6902)
0.5 = coord(1/2)
0.2857143 = coord(2/7)
- Date
- 22. 7.2006 18:55:29
-
Eisenhardt, O.; Ohly, P.: Quantitative Analyse und Suchstrategien (1981)
0.03
0.030046191 = product of:
0.10516167 = sum of:
0.057484865 = weight(_text_:p in 36) [ClassicSimilarity], result of:
0.057484865 = score(doc=36,freq=2.0), product of:
0.12058865 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.033538654 = queryNorm
0.47670212 = fieldWeight in 36, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.09375 = fieldNorm(doc=36)
0.0476768 = weight(_text_:u in 36) [ClassicSimilarity], result of:
0.0476768 = score(doc=36,freq=2.0), product of:
0.109820455 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.033538654 = queryNorm
0.43413407 = fieldWeight in 36, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.09375 = fieldNorm(doc=36)
0.2857143 = coord(2/7)
- Source
- Deutscher Dokumentartag 1980, Berlin, 29.9.-3.10.1980: IuD und Normung - Neue Kommunikationstechnologie - Berufspolitik - Datenbanken - Betriebsstatistik - Informetrie - Parlamentsdokumentation - Arbeitskreis Senioren - Gesprächskreise. Bearb.: M. von der Laake u. H. Strohl-Goebel
-
Grazia Colonia; Dimmler, E.; Dresel, R.; Messner, C.; Krobath, A.; Petz, S.; Sypien, M.; Boxen, P. van; Harders, M.; Heuer, D.; Jordans, I.; Juchem, K.; Linnertz, M.; Mittelhuber, I.; Schwammel, S.; Schlögl, C.; Stock, W.G.: Informationswissenschaftliche Zeitschriften in szientometrischer Analyse (2002)
0.02
0.024490783 = product of:
0.08571774 = sum of:
0.03353284 = weight(_text_:p in 1075) [ClassicSimilarity], result of:
0.03353284 = score(doc=1075,freq=2.0), product of:
0.12058865 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.033538654 = queryNorm
0.27807623 = fieldWeight in 1075, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.0546875 = fieldNorm(doc=1075)
0.0521849 = weight(_text_:i in 1075) [ClassicSimilarity], result of:
0.0521849 = score(doc=1075,freq=4.0), product of:
0.12649874 = queryWeight, product of:
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.033538654 = queryNorm
0.41253293 = fieldWeight in 1075, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.0546875 = fieldNorm(doc=1075)
0.2857143 = coord(2/7)
-
Gaulé, P.: Access to scientific literature in India (2009)
0.02
0.024490783 = product of:
0.08571774 = sum of:
0.03353284 = weight(_text_:p in 3108) [ClassicSimilarity], result of:
0.03353284 = score(doc=3108,freq=2.0), product of:
0.12058865 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.033538654 = queryNorm
0.27807623 = fieldWeight in 3108, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.0546875 = fieldNorm(doc=3108)
0.0521849 = weight(_text_:i in 3108) [ClassicSimilarity], result of:
0.0521849 = score(doc=3108,freq=4.0), product of:
0.12649874 = queryWeight, product of:
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.033538654 = queryNorm
0.41253293 = fieldWeight in 3108, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.0546875 = fieldNorm(doc=3108)
0.2857143 = coord(2/7)
- Abstract
- This article uses an evidence-based approach to assess the difficulties faced by developing country scientists in accessing scientific literature. I compare the backward citation patterns of Swiss and Indian scientists in a database of 43,150 scientific papers published by scientists from either country in 2007. Controlling for fields and quality with citing journal fixed effects, I find that Indian scientists have shorter reference lists (-6%) and are more likely to cite articles from open access journals (+50%). Moreover, the difference in the length of the reference list is more pronounced in biology and medicine, where circulation of (free) preprints and conference proceedings is non-existent. Informal file-sharing practices among scientists mitigate the effects of access restrictions.
-
Donner, P.: Enhanced self-citation detection by fuzzy author name matching and complementary error estimates (2016)
0.02
0.023864334 = product of:
0.083525166 = sum of:
0.028742433 = weight(_text_:p in 2776) [ClassicSimilarity], result of:
0.028742433 = score(doc=2776,freq=2.0), product of:
0.12058865 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.033538654 = queryNorm
0.23835106 = fieldWeight in 2776, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.046875 = fieldNorm(doc=2776)
0.054782733 = weight(_text_:i in 2776) [ClassicSimilarity], result of:
0.054782733 = score(doc=2776,freq=6.0), product of:
0.12649874 = queryWeight, product of:
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.033538654 = queryNorm
0.43306938 = fieldWeight in 2776, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.046875 = fieldNorm(doc=2776)
0.2857143 = coord(2/7)
- Abstract
- In this article I investigate the shortcomings of exact string match-based author self-citation detection methods. The contributions of this study are twofold. First, I apply a fuzzy string matching algorithm for self-citation detection and benchmark this approach and other common methods of exclusively author name-based self-citation detection against a manually curated ground truth sample. Near full recall can be achieved with the proposed method while incurring only negligible precision loss. Second, I report some important observations from the results about the extent of latent self-citations and their characteristics and give an example of the effect of improved self-citation detection on the document level self-citation rate of real data.
-
Ye, F.Y.; Yu, S.S.; Leydesdorff, L.: ¬The Triple Helix of university-industry-government relations at the country level and its dynamic evolution under the pressures of globalization (2013)
0.02
0.022412144 = product of:
0.0784425 = sum of:
0.03371259 = weight(_text_:u in 1110) [ClassicSimilarity], result of:
0.03371259 = score(doc=1110,freq=4.0), product of:
0.109820455 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.033538654 = queryNorm
0.30697915 = fieldWeight in 1110, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.046875 = fieldNorm(doc=1110)
0.044729915 = weight(_text_:i in 1110) [ClassicSimilarity], result of:
0.044729915 = score(doc=1110,freq=4.0), product of:
0.12649874 = queryWeight, product of:
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.033538654 = queryNorm
0.35359967 = fieldWeight in 1110, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.046875 = fieldNorm(doc=1110)
0.2857143 = coord(2/7)
- Abstract
- Using data from the Web of Science (WoS), we analyze the mutual information among university, industry, and government addresses (U-I-G) at the country level for a number of countries. The dynamic evolution of the Triple Helix can thus be compared among developed and developing nations in terms of cross-sectional coauthorship relations. The results show that the Triple Helix interactions among the three subsystems U-I-G become less intensive over time, but unequally for different countries. We suggest that globalization erodes local Triple Helix relations and thus can be expected to have increased differentiation in national systems since the mid-1990s. This effect of globalization is more pronounced in developed countries than in developing ones. In the dynamic analysis, we focus on a more detailed comparison between China and the United States. Specifically, the Chinese Academy of the (Social) Sciences is changing increasingly from a public research institute to an academic one, and this has a measurable effect on China's position in the globalization.
-
Ahlgren, P.; Jarneving, B.; Rousseau, R.: Requirements for a cocitation similarity measure, with special reference to Pearson's correlation coefficient (2003)
0.02
0.02114381 = product of:
0.049335558 = sum of:
0.019161623 = weight(_text_:p in 5171) [ClassicSimilarity], result of:
0.019161623 = score(doc=5171,freq=2.0), product of:
0.12058865 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.033538654 = queryNorm
0.15890071 = fieldWeight in 5171, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.03125 = fieldNorm(doc=5171)
0.021085883 = weight(_text_:i in 5171) [ClassicSimilarity], result of:
0.021085883 = score(doc=5171,freq=2.0), product of:
0.12649874 = queryWeight, product of:
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.033538654 = queryNorm
0.16668847 = fieldWeight in 5171, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.03125 = fieldNorm(doc=5171)
0.00908805 = product of:
0.0181761 = sum of:
0.0181761 = weight(_text_:22 in 5171) [ClassicSimilarity], result of:
0.0181761 = score(doc=5171,freq=2.0), product of:
0.11744665 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.033538654 = queryNorm
0.15476047 = fieldWeight in 5171, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03125 = fieldNorm(doc=5171)
0.5 = coord(1/2)
0.42857143 = coord(3/7)
- Abstract
- Ahlgren, Jarneving, and. Rousseau review accepted procedures for author co-citation analysis first pointing out that since in the raw data matrix the row and column values are identical i,e, the co-citation count of two authors, there is no clear choice for diagonal values. They suggest the number of times an author has been co-cited with himself excluding self citation rather than the common treatment as zeros or as missing values. When the matrix is converted to a similarity matrix the normal procedure is to create a matrix of Pearson's r coefficients between data vectors. Ranking by r and by co-citation frequency and by intuition can easily yield three different orders. It would seem necessary that the adding of zeros to the matrix will not affect the value or the relative order of similarity measures but it is shown that this is not the case with Pearson's r. Using 913 bibliographic descriptions form the Web of Science of articles form JASIS and Scientometrics, authors names were extracted, edited and 12 information retrieval authors and 12 bibliometric authors each from the top 100 most cited were selected. Co-citation and r value (diagonal elements treated as missing) matrices were constructed, and then reconstructed in expanded form. Adding zeros can both change the r value and the ordering of the authors based upon that value. A chi-squared distance measure would not violate these requirements, nor would the cosine coefficient. It is also argued that co-citation data is ordinal data since there is no assurance of an absolute zero number of co-citations, and thus Pearson is not appropriate. The number of ties in co-citation data make the use of the Spearman rank order coefficient problematic.
- Date
- 9. 7.2006 10:22:35
-
Hicks, D.; Wouters, P.; Waltman, L.; Rijcke, S. de; Rafols, I.: ¬The Leiden Manifesto for research metrics : 10 principles to guide research evaluation (2015)
0.02
0.020123756 = product of:
0.07043314 = sum of:
0.03353284 = weight(_text_:p in 1994) [ClassicSimilarity], result of:
0.03353284 = score(doc=1994,freq=2.0), product of:
0.12058865 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.033538654 = queryNorm
0.27807623 = fieldWeight in 1994, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.0546875 = fieldNorm(doc=1994)
0.036900297 = weight(_text_:i in 1994) [ClassicSimilarity], result of:
0.036900297 = score(doc=1994,freq=2.0), product of:
0.12649874 = queryWeight, product of:
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.033538654 = queryNorm
0.29170483 = fieldWeight in 1994, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.0546875 = fieldNorm(doc=1994)
0.2857143 = coord(2/7)
-
Kretschmer, H.; Kretschmer, T.: Well-ordered collaboration structures of co-author pairs in journals (2006)
0.02
0.019362684 = product of:
0.06776939 = sum of:
0.04790406 = weight(_text_:p in 25) [ClassicSimilarity], result of:
0.04790406 = score(doc=25,freq=8.0), product of:
0.12058865 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.033538654 = queryNorm
0.39725178 = fieldWeight in 25, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.0390625 = fieldNorm(doc=25)
0.019865334 = weight(_text_:u in 25) [ClassicSimilarity], result of:
0.019865334 = score(doc=25,freq=2.0), product of:
0.109820455 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.033538654 = queryNorm
0.1808892 = fieldWeight in 25, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.0390625 = fieldNorm(doc=25)
0.2857143 = coord(2/7)
- Abstract
- In single-authored bibliographies only single scientist distribution can be found. But in multi-authored bibliographies single scientists distribution, pairs distribution, triples distribution, etc., can be presented. Whereas regarding Lotka's law single scientists P distribution (both in single-authored and in multi-authored bibliographies) is of interest, in the future pairs P, Q distribution, triples P, Q, R distribution, etc. should be considered Starting with pair distribution, the following question arises in the present paper: Is there also any regularity or well-ordered structure for the distribution of coauthor pairs in journals in analogy to Lotka's law for the distribution of single authors? Usually, in information science "laws " or "regularities " (for example Lotka's law) are mathematical descriptions of observed data inform of functions; however explanations of these phenomena are mostly missing. By contrast, in this paper the derivation of a formula for describing the distribution of the number of co-author pairs will be presented based on wellknown regularities in socio psychology or sociology in conjunction with the Gestalt theory as explanation for well-ordered collaboration structures and production of scientific literature, as well as derivations from Lotka's law. The assumed regularities for the distribution of co-author pairs in journals could be shown in the co-authorship data (1980-1998) of the journals Science, Nature, Proc Nat Acad Sci USA and Phys Rev B Condensed Matter.
- Source
- Vom Wandel der Wissensorganisation im Informationszeitalter: Festschrift für Walther Umstätter zum 65. Geburtstag, hrsg. von P. Hauke u. K. Umlauf
-
Schmitz, J.; Arning, U.; Peters, I.: handbuch.io : Handbuch CoScience / Messung von wissenschaftlichem Impact (2015)
0.02
0.018489076 = product of:
0.064711764 = sum of:
0.027811468 = weight(_text_:u in 2189) [ClassicSimilarity], result of:
0.027811468 = score(doc=2189,freq=2.0), product of:
0.109820455 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.033538654 = queryNorm
0.25324488 = fieldWeight in 2189, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.0546875 = fieldNorm(doc=2189)
0.036900297 = weight(_text_:i in 2189) [ClassicSimilarity], result of:
0.036900297 = score(doc=2189,freq=2.0), product of:
0.12649874 = queryWeight, product of:
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.033538654 = queryNorm
0.29170483 = fieldWeight in 2189, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.0546875 = fieldNorm(doc=2189)
0.2857143 = coord(2/7)
-
Stvilia, B.; Hinnant, C.C.; Schindler, K.; Worrall, A.; Burnett, G.; Burnett, K.; Kazmer, M.M.; Marty, P.F.: Composition of scientific teams and publication productivity at a national science lab (2011)
0.02
0.018285299 = product of:
0.06399854 = sum of:
0.052638482 = product of:
0.105276965 = sum of:
0.105276965 = weight(_text_:p.f in 4191) [ClassicSimilarity], result of:
0.105276965 = score(doc=4191,freq=2.0), product of:
0.2528145 = queryWeight, product of:
7.538004 = idf(docFreq=63, maxDocs=44218)
0.033538654 = queryNorm
0.4164198 = fieldWeight in 4191, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
7.538004 = idf(docFreq=63, maxDocs=44218)
0.0390625 = fieldNorm(doc=4191)
0.5 = coord(1/2)
0.011360062 = product of:
0.022720125 = sum of:
0.022720125 = weight(_text_:22 in 4191) [ClassicSimilarity], result of:
0.022720125 = score(doc=4191,freq=2.0), product of:
0.11744665 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.033538654 = queryNorm
0.19345059 = fieldWeight in 4191, 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=4191)
0.5 = coord(1/2)
0.2857143 = coord(2/7)
- Date
- 22. 1.2011 13:19:42
-
Naumann, U.: Irrläufer einer missverstandenen Szientometrie (2006)
0.02
0.017844293 = product of:
0.06245502 = sum of:
0.028742433 = weight(_text_:p in 23) [ClassicSimilarity], result of:
0.028742433 = score(doc=23,freq=2.0), product of:
0.12058865 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.033538654 = queryNorm
0.23835106 = fieldWeight in 23, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.046875 = fieldNorm(doc=23)
0.03371259 = weight(_text_:u in 23) [ClassicSimilarity], result of:
0.03371259 = score(doc=23,freq=4.0), product of:
0.109820455 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.033538654 = queryNorm
0.30697915 = fieldWeight in 23, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.046875 = fieldNorm(doc=23)
0.2857143 = coord(2/7)
- Source
- Vom Wandel der Wissensorganisation im Informationszeitalter: Festschrift für Walther Umstätter zum 65. Geburtstag, hrsg. von P. Hauke u. K. Umlauf
-
Alvarez, P.; Escalona, I.; Pulgarin, A.: What is wrong with obsolescence? (2000)
0.02
0.017248932 = product of:
0.060371257 = sum of:
0.028742433 = weight(_text_:p in 4858) [ClassicSimilarity], result of:
0.028742433 = score(doc=4858,freq=2.0), product of:
0.12058865 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.033538654 = queryNorm
0.23835106 = fieldWeight in 4858, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.046875 = fieldNorm(doc=4858)
0.031628825 = weight(_text_:i in 4858) [ClassicSimilarity], result of:
0.031628825 = score(doc=4858,freq=2.0), product of:
0.12649874 = queryWeight, product of:
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.033538654 = queryNorm
0.25003272 = fieldWeight in 4858, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.046875 = fieldNorm(doc=4858)
0.2857143 = coord(2/7)
-
Mayr, P.: Information Retrieval-Mehrwertdienste für Digitale Bibliotheken: : Crosskonkordanzen und Bradfordizing (2010)
0.02
0.017248932 = product of:
0.060371257 = sum of:
0.028742433 = weight(_text_:p in 4910) [ClassicSimilarity], result of:
0.028742433 = score(doc=4910,freq=2.0), product of:
0.12058865 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.033538654 = queryNorm
0.23835106 = fieldWeight in 4910, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.046875 = fieldNorm(doc=4910)
0.031628825 = weight(_text_:i in 4910) [ClassicSimilarity], result of:
0.031628825 = score(doc=4910,freq=2.0), product of:
0.12649874 = queryWeight, product of:
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.033538654 = queryNorm
0.25003272 = fieldWeight in 4910, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.046875 = fieldNorm(doc=4910)
0.2857143 = coord(2/7)
- Content
- Die vorliegende Arbeit wurde von der Philosophischen Fakultät I, der Humboldt-Universität zu Berlin im Jahr 2009 als Dissertation zur Erlangung des akademischen Grades Doctor philosophiae (Dr. phil.) angenommen.
-
He, Z.-L.: International collaboration does not have greater epistemic authority (2009)
0.02
0.016674854 = product of:
0.05836199 = sum of:
0.044729915 = weight(_text_:i in 3122) [ClassicSimilarity], result of:
0.044729915 = score(doc=3122,freq=4.0), product of:
0.12649874 = queryWeight, product of:
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.033538654 = queryNorm
0.35359967 = fieldWeight in 3122, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.046875 = fieldNorm(doc=3122)
0.013632074 = product of:
0.027264148 = sum of:
0.027264148 = weight(_text_:22 in 3122) [ClassicSimilarity], result of:
0.027264148 = score(doc=3122,freq=2.0), product of:
0.11744665 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.033538654 = queryNorm
0.23214069 = fieldWeight in 3122, 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=3122)
0.5 = coord(1/2)
0.2857143 = coord(2/7)
- Abstract
- The consistent finding that internationally coauthored papers are more heavily cited has led to a tacit agreement among politicians and scientists that international collaboration in scientific research should be particularly promoted. However, existing studies of research collaboration suffer from a major weakness in that the Thomson Reuters Web of Science until recently did not link author names with affiliation addresses. The general approach has been to hierarchically code papers into international paper, national paper, or local paper based on the address information. This hierarchical coding scheme severely understates the level and contribution of local or national collaboration on an internationally coauthored paper. In this research, I code collaboration variables by hand checking each paper in the sample, use two measures of a paper's impact, and try several regression models. I find that both international collaboration and local collaboration are positively and significantly associated with a paper's impact, but international collaboration does not have more epistemic authority than local collaboration. This result suggests that previous findings based on hierarchical coding might be misleading.
- Date
- 26. 9.2009 11:22:05
-
Pichappan, P.; Sangaranachiyar, S.: Ageing approach to scientific eponyms (1996)
0.02
0.016142672 = product of:
0.056499347 = sum of:
0.038323246 = weight(_text_:p in 80) [ClassicSimilarity], result of:
0.038323246 = score(doc=80,freq=2.0), product of:
0.12058865 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.033538654 = queryNorm
0.31780142 = fieldWeight in 80, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.0625 = fieldNorm(doc=80)
0.0181761 = product of:
0.0363522 = sum of:
0.0363522 = weight(_text_:22 in 80) [ClassicSimilarity], result of:
0.0363522 = score(doc=80,freq=2.0), product of:
0.11744665 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.033538654 = queryNorm
0.30952093 = fieldWeight in 80, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=80)
0.5 = coord(1/2)
0.2857143 = coord(2/7)
- Footnote
- Report presented at the 16th National Indian Association of Special Libraries and Information Centres Seminar Special Interest Group Meeting on Informatrics in Bombay, 19-22 Dec 94
-
Ohly, P.: Dimensions of globality : a bibliometric analysis (2016)
0.02
0.016142672 = product of:
0.056499347 = sum of:
0.038323246 = weight(_text_:p in 4942) [ClassicSimilarity], result of:
0.038323246 = score(doc=4942,freq=2.0), product of:
0.12058865 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.033538654 = queryNorm
0.31780142 = fieldWeight in 4942, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.0625 = fieldNorm(doc=4942)
0.0181761 = product of:
0.0363522 = sum of:
0.0363522 = weight(_text_:22 in 4942) [ClassicSimilarity], result of:
0.0363522 = score(doc=4942,freq=2.0), product of:
0.11744665 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.033538654 = queryNorm
0.30952093 = fieldWeight in 4942, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=4942)
0.5 = coord(1/2)
0.2857143 = coord(2/7)
- Date
- 20. 1.2019 11:22:31
