-
Herb, U.; Beucke, D.: ¬Die Zukunft der Impact-Messung : Social Media, Nutzung und Zitate im World Wide Web (2013)
0.23
0.226823 = product of:
0.6048613 = sum of:
0.20162044 = weight(_text_:2f in 2188) [ClassicSimilarity], result of:
0.20162044 = score(doc=2188,freq=2.0), product of:
0.26905778 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.031735957 = queryNorm
0.7493574 = fieldWeight in 2188, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0625 = fieldNorm(doc=2188)
0.20162044 = weight(_text_:2f in 2188) [ClassicSimilarity], result of:
0.20162044 = score(doc=2188,freq=2.0), product of:
0.26905778 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.031735957 = queryNorm
0.7493574 = fieldWeight in 2188, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0625 = fieldNorm(doc=2188)
0.20162044 = weight(_text_:2f in 2188) [ClassicSimilarity], result of:
0.20162044 = score(doc=2188,freq=2.0), product of:
0.26905778 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.031735957 = queryNorm
0.7493574 = fieldWeight in 2188, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0625 = fieldNorm(doc=2188)
0.375 = coord(3/8)
- Content
- Vgl. unter: https://www.leibniz-science20.de%2Fforschung%2Fprojekte%2Faltmetrics-in-verschiedenen-wissenschaftsdisziplinen%2F&ei=2jTgVaaXGcK4Udj1qdgB&usg=AFQjCNFOPdONj4RKBDf9YDJOLuz3lkGYlg&sig2=5YI3KWIGxBmk5_kv0P_8iQ.
-
Neth, M.: Citation analysis and the Web (1998)
0.03
0.02655571 = product of:
0.10622284 = sum of:
0.0911736 = weight(_text_:kunst in 108) [ClassicSimilarity], result of:
0.0911736 = score(doc=108,freq=2.0), product of:
0.19342332 = queryWeight, product of:
6.0947685 = idf(docFreq=270, maxDocs=44218)
0.031735957 = queryNorm
0.47136816 = fieldWeight in 108, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.0947685 = idf(docFreq=270, maxDocs=44218)
0.0546875 = fieldNorm(doc=108)
0.015049243 = product of:
0.030098487 = sum of:
0.030098487 = weight(_text_:22 in 108) [ClassicSimilarity], result of:
0.030098487 = score(doc=108,freq=2.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = queryNorm
0.2708308 = fieldWeight in 108, 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=108)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Date
- 10. 1.1999 16:22:37
- Field
- Kunst
-
Kenyon, T.: Defining and measuring research impact in the humanities, social sciences and creative arts in the digital age (2014)
0.02
0.018548291 = product of:
0.074193165 = sum of:
0.009069167 = product of:
0.027207501 = sum of:
0.027207501 = weight(_text_:t in 1389) [ClassicSimilarity], result of:
0.027207501 = score(doc=1389,freq=2.0), product of:
0.12502089 = queryWeight, product of:
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.031735957 = queryNorm
0.21762364 = fieldWeight in 1389, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.0390625 = fieldNorm(doc=1389)
0.33333334 = coord(1/3)
0.065124 = weight(_text_:kunst in 1389) [ClassicSimilarity], result of:
0.065124 = score(doc=1389,freq=2.0), product of:
0.19342332 = queryWeight, product of:
6.0947685 = idf(docFreq=270, maxDocs=44218)
0.031735957 = queryNorm
0.33669156 = fieldWeight in 1389, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.0947685 = idf(docFreq=270, maxDocs=44218)
0.0390625 = fieldNorm(doc=1389)
0.25 = coord(2/8)
- Field
- Kunst
-
Jovanovic, M.: ¬Eine kleine Frühgeschichte der Bibliometrie (2012)
0.02
0.015105672 = product of:
0.06042269 = sum of:
0.04752334 = weight(_text_:geschichte in 326) [ClassicSimilarity], result of:
0.04752334 = score(doc=326,freq=2.0), product of:
0.15083465 = queryWeight, product of:
4.7528 = idf(docFreq=1036, maxDocs=44218)
0.031735957 = queryNorm
0.3150691 = fieldWeight in 326, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.7528 = idf(docFreq=1036, maxDocs=44218)
0.046875 = fieldNorm(doc=326)
0.012899351 = product of:
0.025798703 = sum of:
0.025798703 = weight(_text_:22 in 326) [ClassicSimilarity], result of:
0.025798703 = score(doc=326,freq=2.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = queryNorm
0.23214069 = fieldWeight in 326, 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=326)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Abstract
- In der Bibliometrie werden meist zwei Größen vermessen: die Anzahl von Publikationen und Zitationen. Publiziert und zitiert haben Menschen bereits sehr früh in der Geschichte. Schon in der Antike sind bei überlieferten Werken Zitationen zu finden. Der englische Begriff "Bibliometrics" selbst wurde aber erst 1969 definiert. In dem folgenden Artikel wird eine kleine Frühgeschichte der Bibliometrie, einer Unterdisziplin der Informationswissenschaft, bis zu diesem wichtigen Jahr anhand von beispielhaften Studien und Arbeiten dargestellt. Es wird auf die Anfänge von Publikationen und Zitationen und den fachlichen Rahmen der Bibliometrie eingegangen. Der Ursprung der Bibliometriegeschichte selbst wird von unterschiedlichen Autoren unterschiedlich früh angesetzt. Die verschiedenen Ansätze werden vorgestellt und diskutiert. Der Artikel schließt mit einer Beschreibung der wachsenden Bedeutung dieses Fachs im heutigen Informationszeitalter.
- Date
- 22. 7.2012 19:23:32
-
Burrell, Q.L.: Predicting future citation behavior (2003)
0.01
0.008251319 = product of:
0.033005275 = sum of:
0.017956033 = product of:
0.0538681 = sum of:
0.0538681 = weight(_text_:t in 3837) [ClassicSimilarity], result of:
0.0538681 = score(doc=3837,freq=4.0), product of:
0.12502089 = queryWeight, product of:
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.031735957 = queryNorm
0.4308728 = fieldWeight in 3837, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.0546875 = fieldNorm(doc=3837)
0.33333334 = coord(1/3)
0.015049243 = product of:
0.030098487 = sum of:
0.030098487 = weight(_text_:22 in 3837) [ClassicSimilarity], result of:
0.030098487 = score(doc=3837,freq=2.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = queryNorm
0.2708308 = fieldWeight in 3837, 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=3837)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Abstract
- In this article we further develop the theory for a stochastic model for the citation process in the presence of obsolescence to predict the future citation pattern of individual papers in a collection. More precisely, we investigate the conditional distribution-and its mean- of the number of citations to a paper after time t, given the number of citations it has received up to time t. In an important parametric case it is shown that the expected number of future citations is a linear function of the current number, this being interpretable as an example of a success-breeds-success phenomenon.
- Date
- 29. 3.2003 19:22:48
-
Al, U.; Sahiner, M.; Tonta, Y.: Arts and humanities literature : bibliometric characteristics of contributions by Turkish authors (2006)
0.01
0.0081405 = product of:
0.065124 = sum of:
0.065124 = weight(_text_:kunst in 5108) [ClassicSimilarity], result of:
0.065124 = score(doc=5108,freq=2.0), product of:
0.19342332 = queryWeight, product of:
6.0947685 = idf(docFreq=270, maxDocs=44218)
0.031735957 = queryNorm
0.33669156 = fieldWeight in 5108, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.0947685 = idf(docFreq=270, maxDocs=44218)
0.0390625 = fieldNorm(doc=5108)
0.125 = coord(1/8)
- Field
- Kunst
-
Li, T.-C.: Reference sources in periodicals : research note (1995)
0.01
0.007927451 = product of:
0.031709805 = sum of:
0.014510668 = product of:
0.043532003 = sum of:
0.043532003 = weight(_text_:t in 5092) [ClassicSimilarity], result of:
0.043532003 = score(doc=5092,freq=2.0), product of:
0.12502089 = queryWeight, product of:
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.031735957 = queryNorm
0.34819782 = fieldWeight in 5092, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.0625 = fieldNorm(doc=5092)
0.33333334 = coord(1/3)
0.017199136 = product of:
0.034398273 = sum of:
0.034398273 = weight(_text_:22 in 5092) [ClassicSimilarity], result of:
0.034398273 = score(doc=5092,freq=2.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = queryNorm
0.30952093 = fieldWeight in 5092, 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=5092)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Abstract
- Presents a list of 53 periodicals in 22 subject fields which regularly provide bibliographies of theses, research in progress and patents in their particular subject field. The fields of business, economics, history and literature have most periodical listings of dissertations and theses. Also lists 63 periodicals in 25 sub-disciplines which provide rankings or ratings. Rankings and ratings information predominates in the fields of business, sports and games, finance and banking, and library and information science
-
Thelwall, M.; Ruschenburg, T.: Grundlagen und Forschungsfelder der Webometrie (2006)
0.01
0.007927451 = product of:
0.031709805 = sum of:
0.014510668 = product of:
0.043532003 = sum of:
0.043532003 = weight(_text_:t in 77) [ClassicSimilarity], result of:
0.043532003 = score(doc=77,freq=2.0), product of:
0.12502089 = queryWeight, product of:
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.031735957 = queryNorm
0.34819782 = fieldWeight in 77, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.0625 = fieldNorm(doc=77)
0.33333334 = coord(1/3)
0.017199136 = product of:
0.034398273 = sum of:
0.034398273 = weight(_text_:22 in 77) [ClassicSimilarity], result of:
0.034398273 = score(doc=77,freq=2.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = queryNorm
0.30952093 = fieldWeight in 77, 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=77)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Date
- 4.12.2006 12:12:22
-
Althouse, B.M.; West, J.D.; Bergstrom, C.T.; Bergstrom, T.: Differences in impact factor across fields and over time (2009)
0.01
0.0059455885 = product of:
0.023782354 = sum of:
0.010883002 = product of:
0.032649003 = sum of:
0.032649003 = weight(_text_:t in 2695) [ClassicSimilarity], result of:
0.032649003 = score(doc=2695,freq=2.0), product of:
0.12502089 = queryWeight, product of:
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.031735957 = queryNorm
0.26114836 = fieldWeight in 2695, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.046875 = fieldNorm(doc=2695)
0.33333334 = coord(1/3)
0.012899351 = product of:
0.025798703 = sum of:
0.025798703 = weight(_text_:22 in 2695) [ClassicSimilarity], result of:
0.025798703 = score(doc=2695,freq=2.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = queryNorm
0.23214069 = fieldWeight in 2695, 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=2695)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Date
- 23. 2.2009 18:22:28
-
¬Die deutsche Zeitschrift für Dokumentation, Informationswissenschaft und Informationspraxis von 1950 bis 2011 : eine vorläufige Bilanz in vier Abschnitten (2012)
0.01
0.0059455885 = product of:
0.023782354 = sum of:
0.010883002 = product of:
0.032649003 = sum of:
0.032649003 = weight(_text_:t in 402) [ClassicSimilarity], result of:
0.032649003 = score(doc=402,freq=2.0), product of:
0.12502089 = queryWeight, product of:
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.031735957 = queryNorm
0.26114836 = fieldWeight in 402, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.046875 = fieldNorm(doc=402)
0.33333334 = coord(1/3)
0.012899351 = product of:
0.025798703 = sum of:
0.025798703 = weight(_text_:22 in 402) [ClassicSimilarity], result of:
0.025798703 = score(doc=402,freq=2.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = 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)
0.25 = coord(2/8)
- 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).
-
Huang, M.-H.; Huang, W.-T.; Chang, C.-C.; Chen, D. Z.; Lin, C.-P.: The greater scattering phenomenon beyond Bradford's law in patent citation (2014)
0.01
0.0059455885 = product of:
0.023782354 = sum of:
0.010883002 = product of:
0.032649003 = sum of:
0.032649003 = weight(_text_:t in 1352) [ClassicSimilarity], result of:
0.032649003 = score(doc=1352,freq=2.0), product of:
0.12502089 = queryWeight, product of:
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.031735957 = queryNorm
0.26114836 = fieldWeight in 1352, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.046875 = fieldNorm(doc=1352)
0.33333334 = coord(1/3)
0.012899351 = product of:
0.025798703 = sum of:
0.025798703 = weight(_text_:22 in 1352) [ClassicSimilarity], result of:
0.025798703 = score(doc=1352,freq=2.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = queryNorm
0.23214069 = fieldWeight in 1352, 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=1352)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Date
- 22. 8.2014 17:11:29
-
Ntuli, H.; Inglesi-Lotz, R.; Chang, T.; Pouris, A.: Does research output cause economic growth or vice versa? : evidence from 34 OECD countries (2015)
0.01
0.0059455885 = product of:
0.023782354 = sum of:
0.010883002 = product of:
0.032649003 = sum of:
0.032649003 = weight(_text_:t in 2132) [ClassicSimilarity], result of:
0.032649003 = score(doc=2132,freq=2.0), product of:
0.12502089 = queryWeight, product of:
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.031735957 = queryNorm
0.26114836 = fieldWeight in 2132, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.046875 = fieldNorm(doc=2132)
0.33333334 = coord(1/3)
0.012899351 = product of:
0.025798703 = sum of:
0.025798703 = weight(_text_:22 in 2132) [ClassicSimilarity], result of:
0.025798703 = score(doc=2132,freq=2.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = queryNorm
0.23214069 = fieldWeight in 2132, 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=2132)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Date
- 8. 7.2015 22:00:42
-
Dees, W.: Aktuelle Themen der Szientometrie : Bericht über die 12th International Conference on Scientometrics and Informetrics vom 14. bis 17. Juli 2009 (2009)
0.01
0.0059404173 = product of:
0.04752334 = sum of:
0.04752334 = weight(_text_:geschichte in 3242) [ClassicSimilarity], result of:
0.04752334 = score(doc=3242,freq=2.0), product of:
0.15083465 = queryWeight, product of:
4.7528 = idf(docFreq=1036, maxDocs=44218)
0.031735957 = queryNorm
0.3150691 = fieldWeight in 3242, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.7528 = idf(docFreq=1036, maxDocs=44218)
0.046875 = fieldNorm(doc=3242)
0.125 = coord(1/8)
- Abstract
- Vom 14. bis 17. Juli fand in Rio de Janeiro die 12th International Conference on Scientometrics and Informetrics statt. Das von den Organisatoren formulierte Ziel der Tagung war es, ein internationals Forum für Wissenschaftler, Wissenschaftsmanager und im Informationsbereich Tätige zu bieten, um den gegenwärtigen Stand und die Fortschritte im Feld szientometrischer Theorien und Anwendungen zu diskutieren. Nachdem die letzten beiden Konferenzen in Europa stattgefunden hatten (Stockholm und Madrid), war mit der Wahl des Tagungsortes zudem der Anspruch verknüpft, einen Beitrag zur weiteren Verbreitung der Szientometrie in lateinamerikanischen Ländern zu leisten. Die Konferenz verzeichnete die in ihrer bisherigen Geschichte höchste Zahl von eingereichten Beiträgen (254), von denen 66 Prozent angenommen wurden. Das endgültige Programm umfasste damit zwei Keynotes, über 90 Vorträge in 21 Sessions sowie 64 Poster. Vor dem Beginn dieses Hauptprogramms der Konferenz fanden darüber hinaus ein Doctoral Forum und drei Workshops zu den Themen "Tracking and evaluating interdisciplinary research: metric and maps", "Visualizing and Analyzing Scientific Literature with CiteSpace" und "Using Maps of Science to Teach Science" statt.
-
Schubert, T.; Michels, C.: Placing articles in the large publisher nations : is there a "free lunch" in terms of higher impact? (2013)
0.00
0.0049546566 = product of:
0.019818626 = sum of:
0.009069167 = product of:
0.027207501 = sum of:
0.027207501 = weight(_text_:t in 669) [ClassicSimilarity], result of:
0.027207501 = score(doc=669,freq=2.0), product of:
0.12502089 = queryWeight, product of:
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.031735957 = queryNorm
0.21762364 = fieldWeight in 669, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.0390625 = fieldNorm(doc=669)
0.33333334 = coord(1/3)
0.01074946 = product of:
0.02149892 = sum of:
0.02149892 = weight(_text_:22 in 669) [ClassicSimilarity], result of:
0.02149892 = score(doc=669,freq=2.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = queryNorm
0.19345059 = fieldWeight in 669, 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=669)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Date
- 22. 3.2013 19:45:49
-
Ortega, J.L.: ¬The presence of academic journals on Twitter and its relationship with dissemination (tweets) and research impact (citations) (2017)
0.00
0.0049546566 = product of:
0.019818626 = sum of:
0.009069167 = product of:
0.027207501 = sum of:
0.027207501 = weight(_text_:t in 4410) [ClassicSimilarity], result of:
0.027207501 = score(doc=4410,freq=2.0), product of:
0.12502089 = queryWeight, product of:
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.031735957 = queryNorm
0.21762364 = fieldWeight in 4410, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9394085 = idf(docFreq=2338, maxDocs=44218)
0.0390625 = fieldNorm(doc=4410)
0.33333334 = coord(1/3)
0.01074946 = product of:
0.02149892 = sum of:
0.02149892 = weight(_text_:22 in 4410) [ClassicSimilarity], result of:
0.02149892 = score(doc=4410,freq=2.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = queryNorm
0.19345059 = fieldWeight in 4410, 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=4410)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Abstract
- Purpose The purpose of this paper is to analyze the relationship between dissemination of research papers on Twitter and its influence on research impact. Design/methodology/approach Four types of journal Twitter accounts (journal, owner, publisher and no Twitter account) were defined to observe differences in the number of tweets and citations. In total, 4,176 articles from 350 journals were extracted from Plum Analytics. This altmetric provider tracks the number of tweets and citations for each paper. Student's t-test for two-paired samples was used to detect significant differences between each group of journals. Regression analysis was performed to detect which variables may influence the getting of tweets and citations. Findings The results show that journals with their own Twitter account obtain more tweets (46 percent) and citations (34 percent) than journals without a Twitter account. Followers is the variable that attracts more tweets (ß=0.47) and citations (ß=0.28) but the effect is small and the fit is not good for tweets (R2=0.46) and insignificant for citations (R2=0.18). Originality/value This is the first study that tests the performance of research journals on Twitter according to their handles, observing how the dissemination of content in this microblogging network influences the citation of their papers.
- Date
- 20. 1.2015 18:30:22
-
Nicholls, P.T.: Empirical validation of Lotka's law (1986)
0.00
0.004299784 = product of:
0.034398273 = sum of:
0.034398273 = product of:
0.068796545 = sum of:
0.068796545 = weight(_text_:22 in 5509) [ClassicSimilarity], result of:
0.068796545 = score(doc=5509,freq=2.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = queryNorm
0.61904186 = fieldWeight in 5509, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.125 = fieldNorm(doc=5509)
0.5 = coord(1/2)
0.125 = coord(1/8)
- Source
- Information processing and management. 22(1986), S.417-419
-
Nicolaisen, J.: Citation analysis (2007)
0.00
0.004299784 = product of:
0.034398273 = sum of:
0.034398273 = product of:
0.068796545 = sum of:
0.068796545 = weight(_text_:22 in 6091) [ClassicSimilarity], result of:
0.068796545 = score(doc=6091,freq=2.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = queryNorm
0.61904186 = fieldWeight in 6091, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.125 = fieldNorm(doc=6091)
0.5 = coord(1/2)
0.125 = coord(1/8)
- Date
- 13. 7.2008 19:53:22
-
Fiala, J.: Information flood : fiction and reality (1987)
0.00
0.004299784 = product of:
0.034398273 = sum of:
0.034398273 = product of:
0.068796545 = sum of:
0.068796545 = weight(_text_:22 in 1080) [ClassicSimilarity], result of:
0.068796545 = score(doc=1080,freq=2.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = queryNorm
0.61904186 = fieldWeight in 1080, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.125 = fieldNorm(doc=1080)
0.5 = coord(1/2)
0.125 = coord(1/8)
- Source
- Thermochimica acta. 110(1987), S.11-22
-
Su, Y.; Han, L.-F.: ¬A new literature growth model : variable exponential growth law of literature (1998)
0.00
0.0038005079 = product of:
0.030404063 = sum of:
0.030404063 = product of:
0.060808126 = sum of:
0.060808126 = weight(_text_:22 in 3690) [ClassicSimilarity], result of:
0.060808126 = score(doc=3690,freq=4.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = queryNorm
0.54716086 = fieldWeight in 3690, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=3690)
0.5 = coord(1/2)
0.125 = coord(1/8)
- Date
- 22. 5.1999 19:22:35
-
Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001)
0.00
0.0038005079 = product of:
0.030404063 = sum of:
0.030404063 = product of:
0.060808126 = sum of:
0.060808126 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
0.060808126 = score(doc=3925,freq=4.0), product of:
0.11113391 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.031735957 = queryNorm
0.54716086 = fieldWeight in 3925, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=3925)
0.5 = coord(1/2)
0.125 = coord(1/8)
- Date
- 22. 7.2006 15:22:28
