-
Wettlauf der Wissenschaft (2004)
0.04
0.044737473 = product of:
0.089474946 = sum of:
0.089474946 = sum of:
0.06186381 = weight(_text_:news in 2495) [ClassicSimilarity], result of:
0.06186381 = score(doc=2495,freq=2.0), product of:
0.26705483 = queryWeight, product of:
5.2416887 = idf(docFreq=635, maxDocs=44218)
0.05094824 = queryNorm
0.2316521 = fieldWeight in 2495, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.2416887 = idf(docFreq=635, maxDocs=44218)
0.03125 = fieldNorm(doc=2495)
0.027611133 = weight(_text_:22 in 2495) [ClassicSimilarity], result of:
0.027611133 = score(doc=2495,freq=2.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = queryNorm
0.15476047 = fieldWeight in 2495, 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=2495)
0.5 = coord(1/2)
- Footnote
- Vgl.: http://www.i-med.ac.at/mypoint/news/2004051201.xml (cf) (Quelle: U.S. Is Losing Its Dominance In the Sciences, by WI LLIAM J. BROAD, New York Times, May 3, 2004)
- Source
- Online Mitteilungen. 2004, Nr.79, S.22-23 [=Mitteilungen VÖB 57(2004) H.2]
-
Nicolaisen, J.: Citation analysis (2007)
0.03
0.027611133 = product of:
0.055222265 = sum of:
0.055222265 = product of:
0.11044453 = sum of:
0.11044453 = weight(_text_:22 in 6091) [ClassicSimilarity], result of:
0.11044453 = score(doc=6091,freq=2.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = 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)
0.5 = coord(1/2)
- Date
- 13. 7.2008 19:53:22
-
Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001)
0.02
0.024405023 = product of:
0.048810046 = sum of:
0.048810046 = product of:
0.09762009 = sum of:
0.09762009 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
0.09762009 = score(doc=3925,freq=4.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = 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)
0.5 = coord(1/2)
- Date
- 22. 7.2006 15:22:28
-
Lewison, G.: ¬The work of the Bibliometrics Research Group (City University) and associates (2005)
0.02
0.020708349 = product of:
0.041416697 = sum of:
0.041416697 = product of:
0.082833394 = sum of:
0.082833394 = weight(_text_:22 in 4890) [ClassicSimilarity], result of:
0.082833394 = score(doc=4890,freq=2.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = queryNorm
0.46428138 = fieldWeight in 4890, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=4890)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 20. 1.2007 17:02:22
-
Maier, S.: Wie Wissenschaftler berühmt werden : Anzahl der Veröffentlichungen zählt - "Google" ist das Maß aller Dinge (2004)
0.02
0.01933244 = product of:
0.03866488 = sum of:
0.03866488 = product of:
0.07732976 = sum of:
0.07732976 = weight(_text_:news in 2901) [ClassicSimilarity], result of:
0.07732976 = score(doc=2901,freq=2.0), product of:
0.26705483 = queryWeight, product of:
5.2416887 = idf(docFreq=635, maxDocs=44218)
0.05094824 = queryNorm
0.28956512 = fieldWeight in 2901, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.2416887 = idf(docFreq=635, maxDocs=44218)
0.0390625 = fieldNorm(doc=2901)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Footnote
- Vgl.: http:/www.wissenschaft.de/wissen/news/240593.html
-
Frohlich, C.; Resler, L.: Analysis of publications and citations from a geophysics research institute (2001)
0.02
0.015465952 = product of:
0.030931905 = sum of:
0.030931905 = product of:
0.06186381 = sum of:
0.06186381 = weight(_text_:news in 5797) [ClassicSimilarity], result of:
0.06186381 = score(doc=5797,freq=2.0), product of:
0.26705483 = queryWeight, product of:
5.2416887 = idf(docFreq=635, maxDocs=44218)
0.05094824 = queryNorm
0.2316521 = fieldWeight in 5797, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.2416887 = idf(docFreq=635, maxDocs=44218)
0.03125 = fieldNorm(doc=5797)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- We here perform an analysis of all 1128 publications produced by scientists during their employment at the University of Texas Institute for Geophysics, a geophysical research laboratory founded in 1972 that currently employs 23 Ph.D.-level scientists. We thus assess research performance using as bibliometric indicators such statistics as publications per year, citations per paper, and cited half-lives. To characterize the research style of individual scientists and to obtain insight into the origin of certain publication-counting discrepancies, we classified the 1128 publications into four categories that differed significantly with respect to statistics such as lifetime citation rates, fraction of papers never-cited after 10 years, and cited half-life. The categories were: mainstream (prestige journal) publications -32.6 lifetime cit/pap, 2.4% never cited, and 6.9 year half-life; archival (other refereed)-12.0 lifetime cit/pap. 21.5% never cited, and 9.5 years half-life; articles published as proceedings of conferences-5.4 lifetime cit/pap, 26.6% never cited, and 5.4 years half-life; and "other" publications (news articles, book reviews, etc.)-4.2 lifetime cit/pap, 57.1% never cited, and 1.9 years half-life. Because determining cited half-lives is highly similar to a well-studied phenomenon in earthquake seismology, which was familiar to us, we thoroughly evaluate five different methods for determining the cited half-life and discuss the robustness and limitations of the various methods. Unfortunately, even when data are numerous the various methods often obtain very different values for the half-life. Our preferred method determines halflife from the ratio of citations appearing in back-to-back 5-year periods. We also evaluate the reliability of the citation count data used for these kinds of analysis and conclude that citation count data are often imprecise. All observations suggest that reported differences in cited half-lives must be quite large to be significant
-
Czepel, R.: ¬Die Geographie der wissenschaftlichen Zitierung (2003)
0.02
0.015465952 = product of:
0.030931905 = sum of:
0.030931905 = product of:
0.06186381 = sum of:
0.06186381 = weight(_text_:news in 2273) [ClassicSimilarity], result of:
0.06186381 = score(doc=2273,freq=2.0), product of:
0.26705483 = queryWeight, product of:
5.2416887 = idf(docFreq=635, maxDocs=44218)
0.05094824 = queryNorm
0.2316521 = fieldWeight in 2273, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.2416887 = idf(docFreq=635, maxDocs=44218)
0.03125 = fieldNorm(doc=2273)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Ein britischer Forscher hat sich die Mühe gemacht, die geografischen Muster der Zitierungen von 1981 bis zur Gegenwart freizulegen. Das Ergebnis: Die publizistische Wahrnehmung ist in der Wissenschaft äußerst ungleich verteilt. Die USA dominieren mit großem Abstand vor dem Rest der WeIt. Und auch dort konzentrieren sich die Verweise auf einige wenige Ballungsräume der Forschung. Michael Batty vom Centre for Advanced Spatial Analysis in London bediente sich für seine Analyse der Datenbank "ISIHighlyCited.com" (http: //www.isihighlycited.com/), in der Forscher aus verschiedenen Disziplinen aufgelistet werden, die die weltweit meisten Zitate auf sich gezogen haben. In diesen Ranglisten nehmen die akademischen Edelschmieden aus den USA etwa jene Rolle ein, die Österreichische Athleten im Alpinschisport besetzen. Einzig der Forschungsraum London kann mit der Konkurrenz aus Übersee halbwegs mithalten. Der Artikel "Citation Geography: It's About Location" von Michael Batty erschien im Magazin "The Scientist" (Band 17, Heft 16/10, Ausgabe vom 25.8.03; http://www.thescientist.com/yr2003/aug/opinion 030825.html). Die Zeitschrift ist nach individueller Registrierung frei zugänglich. Der Homepage des Autors http: //www.casa.ucl.ac.uk/citations/ können weitere Details entnommen werden. Ob die Anzahl derZitate auch etwas über die wissenschaftliche Qualität aussagt, ist genau so Gegenstand von Diskussionen, wie dies etwa bei den "Impact-Faktoren" von Journalen der Fall ist (vgl. "Kann wissenschaftliche Qualität gemessen werden?", http://science.orf.at/science/news/58648). Ganz wertfrei kann man die ISI-Daten jedenfalls dazu verwenden, um herauszufinden, in welchem Land, in welcher Stadt und in welcher Institution die meist zitierten Forscher dieses Erdballs sitzen. Das Ergebnis dieser von Michael Batty erstellten "Geografie derwissenschaftlichen Zitierung" ist eindeutig: Einige Wenige ziehen den Großteil der publizistischen Aufmerksamkeit auf sich - und lassen für den Rest nur wenig über. Diese Aussage gilt gleichermaßen für Ranglisten von Städten, Institutionen und Ländern. Und: In allen drei Fällen kommen die Spitzereiter aus dem US-amerikanischen Raum.
-
Raan, A.F.J. van: Statistical properties of bibliometric indicators : research group indicator distributions and correlations (2006)
0.01
0.014643014 = product of:
0.029286029 = sum of:
0.029286029 = product of:
0.058572058 = sum of:
0.058572058 = weight(_text_:22 in 5275) [ClassicSimilarity], result of:
0.058572058 = score(doc=5275,freq=4.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = 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)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 7.2006 16:20:22
-
Larivière, V.; Gingras, Y.; Archambault, E.: ¬The decline in the concentration of citations, 1900-2007 (2009)
0.01
0.014643014 = product of:
0.029286029 = sum of:
0.029286029 = product of:
0.058572058 = sum of:
0.058572058 = weight(_text_:22 in 2763) [ClassicSimilarity], result of:
0.058572058 = score(doc=2763,freq=4.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = queryNorm
0.32829654 = fieldWeight in 2763, 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=2763)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 3.2009 19:22:35
-
Thelwall, M.; Ruschenburg, T.: Grundlagen und Forschungsfelder der Webometrie (2006)
0.01
0.013805566 = product of:
0.027611133 = sum of:
0.027611133 = product of:
0.055222265 = sum of:
0.055222265 = weight(_text_:22 in 77) [ClassicSimilarity], result of:
0.055222265 = score(doc=77,freq=2.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = 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)
0.5 = coord(1/2)
- Date
- 4.12.2006 12:12:22
-
Rostaing, H.; Barts, N.; Léveillé, V.: Bibliometrics: representation instrument of the multidisciplinary positioning of a scientific area : Implementation for an Advisory Scientific Committee (2007)
0.01
0.013805566 = product of:
0.027611133 = sum of:
0.027611133 = product of:
0.055222265 = sum of:
0.055222265 = weight(_text_:22 in 1144) [ClassicSimilarity], result of:
0.055222265 = score(doc=1144,freq=2.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = queryNorm
0.30952093 = fieldWeight in 1144, 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=1144)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 30.12.2007 11:22:39
-
Levitt, J.M.; Thelwall, M.: Citation levels and collaboration within library and information science (2009)
0.01
0.012202512 = product of:
0.024405023 = sum of:
0.024405023 = product of:
0.048810046 = sum of:
0.048810046 = weight(_text_:22 in 2734) [ClassicSimilarity], result of:
0.048810046 = score(doc=2734,freq=4.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = queryNorm
0.27358043 = fieldWeight in 2734, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=2734)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Collaboration is a major research policy objective, but does it deliver higher quality research? This study uses citation analysis to examine the Web of Science (WoS) Information Science & Library Science subject category (IS&LS) to ascertain whether, in general, more highly cited articles are more highly collaborative than other articles. It consists of two investigations. The first investigation is a longitudinal comparison of the degree and proportion of collaboration in five strata of citation; it found that collaboration in the highest four citation strata (all in the most highly cited 22%) increased in unison over time, whereas collaboration in the lowest citation strata (un-cited articles) remained low and stable. Given that over 40% of the articles were un-cited, it seems important to take into account the differences found between un-cited articles and relatively highly cited articles when investigating collaboration in IS&LS. The second investigation compares collaboration for 35 influential information scientists; it found that their more highly cited articles on average were not more highly collaborative than their less highly cited articles. In summary, although collaborative research is conducive to high citation in general, collaboration has apparently not tended to be essential to the success of current and former elite information scientists.
- Date
- 22. 3.2009 12:43:51
-
Burrell, Q.L.: Predicting future citation behavior (2003)
0.01
0.01207987 = product of:
0.02415974 = sum of:
0.02415974 = product of:
0.04831948 = sum of:
0.04831948 = weight(_text_:22 in 3837) [ClassicSimilarity], result of:
0.04831948 = score(doc=3837,freq=2.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = 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)
0.5 = coord(1/2)
- Date
- 29. 3.2003 19:22:48
-
Leydesdorff, L.: Can networks of journal-journal citations be used as indicators of change in the social sciences? (2003)
0.01
0.010354174 = product of:
0.020708349 = sum of:
0.020708349 = product of:
0.041416697 = sum of:
0.041416697 = weight(_text_:22 in 4460) [ClassicSimilarity], result of:
0.041416697 = score(doc=4460,freq=2.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = 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(1/2)
- Date
- 6.11.2005 19:02:22
-
Asonuma, A.; Fang, Y.; Rousseau, R.: Reflections on the age distribution of Japanese scientists (2006)
0.01
0.010354174 = product of:
0.020708349 = sum of:
0.020708349 = product of:
0.041416697 = sum of:
0.041416697 = weight(_text_:22 in 5270) [ClassicSimilarity], result of:
0.041416697 = score(doc=5270,freq=2.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = queryNorm
0.23214069 = fieldWeight in 5270, 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=5270)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 7.2006 15:26:24
-
Haycock, L.A.: Citation analysis of education dissertations for collection development (2004)
0.01
0.010354174 = product of:
0.020708349 = sum of:
0.020708349 = product of:
0.041416697 = sum of:
0.041416697 = weight(_text_:22 in 135) [ClassicSimilarity], result of:
0.041416697 = score(doc=135,freq=2.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = queryNorm
0.23214069 = fieldWeight in 135, 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=135)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 10. 9.2000 17:38:22
-
Chan, H.C.; Kim, H.-W.; Tan, W.C.: Information systems citation patterns from International Conference on Information Systems articles (2006)
0.01
0.010354174 = product of:
0.020708349 = sum of:
0.020708349 = product of:
0.041416697 = sum of:
0.041416697 = weight(_text_:22 in 201) [ClassicSimilarity], result of:
0.041416697 = score(doc=201,freq=2.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = queryNorm
0.23214069 = fieldWeight in 201, 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=201)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 3. 1.2007 17:22:03
-
H-Index auch im Web of Science (2008)
0.01
0.010354174 = product of:
0.020708349 = sum of:
0.020708349 = product of:
0.041416697 = sum of:
0.041416697 = weight(_text_:22 in 590) [ClassicSimilarity], result of:
0.041416697 = score(doc=590,freq=2.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = queryNorm
0.23214069 = fieldWeight in 590, 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=590)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 6. 4.2008 19:04:22
-
Mingers, J.; Burrell, Q.L.: Modeling citation behavior in Management Science journals (2006)
0.01
0.010354174 = product of:
0.020708349 = sum of:
0.020708349 = product of:
0.041416697 = sum of:
0.041416697 = weight(_text_:22 in 994) [ClassicSimilarity], result of:
0.041416697 = score(doc=994,freq=2.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = queryNorm
0.23214069 = fieldWeight in 994, 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=994)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 26.12.2007 19:22:05
-
Althouse, B.M.; West, J.D.; Bergstrom, C.T.; Bergstrom, T.: Differences in impact factor across fields and over time (2009)
0.01
0.010354174 = product of:
0.020708349 = sum of:
0.020708349 = product of:
0.041416697 = sum of:
0.041416697 = weight(_text_:22 in 2695) [ClassicSimilarity], result of:
0.041416697 = score(doc=2695,freq=2.0), product of:
0.17841205 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05094824 = 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)
0.5 = coord(1/2)
- Date
- 23. 2.2009 18:22:28
