-
Harzing, A.-W.; Wal, R. van der: ¬A Google Scholar h-index for journals : an alternative metric to measure journal impact in economics and business (2009)
0.13
0.13453752 = product of:
0.17938335 = sum of:
0.04820572 = weight(_text_:h in 2630) [ClassicSimilarity], result of:
0.04820572 = score(doc=2630,freq=8.0), product of:
0.10975983 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04417874 = queryNorm
0.4391927 = fieldWeight in 2630, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0625 = fieldNorm(doc=2630)
0.12143551 = weight(_text_:van in 2630) [ClassicSimilarity], result of:
0.12143551 = score(doc=2630,freq=2.0), product of:
0.2463667 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04417874 = queryNorm
0.49290553 = fieldWeight in 2630, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0625 = fieldNorm(doc=2630)
0.009742132 = product of:
0.019484265 = sum of:
0.019484265 = weight(_text_:der in 2630) [ClassicSimilarity], result of:
0.019484265 = score(doc=2630,freq=2.0), product of:
0.098685004 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.04417874 = queryNorm
0.19743896 = fieldWeight in 2630, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.0625 = fieldNorm(doc=2630)
0.5 = coord(1/2)
0.75 = coord(3/4)
- Abstract
- We propose a new data source (Google Scholar) and metric (Hirsch's h-index) to assess journal impact in the field of economics and business. A systematic comparison between the Google Scholar h-index and the ISI Journal Impact Factor for a sample of 838 journals in economics and business shows that the former provides a more accurate and comprehensive measure of journal impact.
- Object
- h-index
-
Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001)
0.13
0.1303995 = product of:
0.260799 = sum of:
0.15179437 = weight(_text_:van in 3925) [ClassicSimilarity], result of:
0.15179437 = score(doc=3925,freq=2.0), product of:
0.2463667 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04417874 = queryNorm
0.6161319 = fieldWeight in 3925, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.078125 = fieldNorm(doc=3925)
0.109004624 = sum of:
0.02435533 = weight(_text_:der in 3925) [ClassicSimilarity], result of:
0.02435533 = score(doc=3925,freq=2.0), product of:
0.098685004 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.04417874 = queryNorm
0.2467987 = fieldWeight in 3925, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.078125 = fieldNorm(doc=3925)
0.084649295 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
0.084649295 = score(doc=3925,freq=4.0), product of:
0.15470642 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04417874 = 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(2/4)
- Date
- 22. 7.2006 15:22:28
-
Li, J.; Shi, D.: Sleeping beauties in genius work : when were they awakened? (2016)
0.09
0.0878531 = product of:
0.1757062 = sum of:
0.15774937 = weight(_text_:van in 2647) [ClassicSimilarity], result of:
0.15774937 = score(doc=2647,freq=6.0), product of:
0.2463667 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04417874 = queryNorm
0.64030313 = fieldWeight in 2647, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.046875 = fieldNorm(doc=2647)
0.017956827 = product of:
0.035913654 = sum of:
0.035913654 = weight(_text_:22 in 2647) [ClassicSimilarity], result of:
0.035913654 = score(doc=2647,freq=2.0), product of:
0.15470642 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04417874 = queryNorm
0.23214069 = fieldWeight in 2647, 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=2647)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Abstract
- "Genius work," proposed by Avramescu, refers to scientific articles whose citations grow exponentially in an extended period, for example, over 50 years. Such articles were defined as "sleeping beauties" by van Raan, who quantitatively studied the phenomenon of delayed recognition. However, the criteria adopted by van Raan at times are not applicable and may confer recognition prematurely. To revise such deficiencies, this paper proposes two new criteria, which are applicable (but not limited) to exponential citation curves. We searched for genius work among articles of Nobel Prize laureates during the period of 1901-2012 on the Web of Science, finding 25 articles of genius work out of 21,438 papers including 10 (by van Raan's criteria) sleeping beauties and 15 nonsleeping-beauties. By our new criteria, two findings were obtained through empirical analysis: (a) the awakening periods for genius work depend on the increase rate b in the exponential function, and (b) lower b leads to a longer sleeping period.
- Date
- 22. 1.2016 14:13:32
-
Eijk, C.C. van der; Mulligen, E.M. van; Kors, J.A.; Mons, B.; Berg, J. van den: Constructing an associative concept space for literature-based discovery (2004)
0.08
0.08252799 = product of:
0.16505598 = sum of:
0.15774937 = weight(_text_:van in 2228) [ClassicSimilarity], result of:
0.15774937 = score(doc=2228,freq=6.0), product of:
0.2463667 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04417874 = queryNorm
0.64030313 = fieldWeight in 2228, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.046875 = fieldNorm(doc=2228)
0.007306599 = product of:
0.014613198 = sum of:
0.014613198 = weight(_text_:der in 2228) [ClassicSimilarity], result of:
0.014613198 = score(doc=2228,freq=2.0), product of:
0.098685004 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.04417874 = queryNorm
0.14807922 = fieldWeight in 2228, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.046875 = fieldNorm(doc=2228)
0.5 = coord(1/2)
0.5 = coord(2/4)
-
Waltman, L.; Eck, N.J. van: ¬The inconsistency of the h-index : the case of web accessibility in Western European countries (2012)
0.07
0.07412079 = product of:
0.14824158 = sum of:
0.05716495 = weight(_text_:h in 40) [ClassicSimilarity], result of:
0.05716495 = score(doc=40,freq=20.0), product of:
0.10975983 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04417874 = queryNorm
0.5208185 = fieldWeight in 40, product of:
4.472136 = tf(freq=20.0), with freq of:
20.0 = termFreq=20.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.046875 = fieldNorm(doc=40)
0.09107663 = weight(_text_:van in 40) [ClassicSimilarity], result of:
0.09107663 = score(doc=40,freq=2.0), product of:
0.2463667 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04417874 = queryNorm
0.36967915 = fieldWeight in 40, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.046875 = fieldNorm(doc=40)
0.5 = coord(2/4)
- Abstract
- The h-index is a popular bibliometric indicator for assessing individual scientists. We criticize the h-index from a theoretical point of view. We argue that for the purpose of measuring the overall scientific impact of a scientist (or some other unit of analysis), the h-index behaves in a counterintuitive way. In certain cases, the mechanism used by the h-index to aggregate publication and citation statistics into a single number leads to inconsistencies in the way in which scientists are ranked. Our conclusion is that the h-index cannot be considered an appropriate indicator of a scientist's overall scientific impact. Based on recent theoretical insights, we discuss what kind of indicators can be used as an alternative to the h-index. We pay special attention to the highly cited publications indicator. This indicator has a lot in common with the h-index, but unlike the h-index it does not produce inconsistent rankings.
- Object
- h-index
-
Raan, A.F.J. van: Scaling rules in the science system : influence of field-specific citation characteristics on the impact of research groups (2008)
0.07
0.073379315 = product of:
0.14675863 = sum of:
0.12880181 = weight(_text_:van in 2758) [ClassicSimilarity], result of:
0.12880181 = score(doc=2758,freq=4.0), product of:
0.2463667 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04417874 = queryNorm
0.5228053 = fieldWeight in 2758, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.046875 = fieldNorm(doc=2758)
0.017956827 = product of:
0.035913654 = sum of:
0.035913654 = weight(_text_:22 in 2758) [ClassicSimilarity], result of:
0.035913654 = score(doc=2758,freq=2.0), product of:
0.15470642 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04417874 = queryNorm
0.23214069 = fieldWeight in 2758, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=2758)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Date
- 22. 3.2009 19:03:12
- Footnote
- Vgl. auch: Costas, R., M. Bordons u. T.N. van Leeuwen u.a.: Scaling rules in the science system: Influence of field-specific citation characteristics on the impact of individual researchers. In: Journal of the American Society for Information Science and Technology. 60(2009) no.4, S.740-753.
-
Costas, R.; Bordons, M.; Leeuwen, T.N. van; Raan, A.F.J. van: Scaling rules in the science system : Influence of field-specific citation characteristics on the impact of individual researchers (2009)
0.07
0.07321091 = product of:
0.14642182 = sum of:
0.13145779 = weight(_text_:van in 2759) [ClassicSimilarity], result of:
0.13145779 = score(doc=2759,freq=6.0), product of:
0.2463667 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04417874 = queryNorm
0.5335859 = fieldWeight in 2759, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0390625 = fieldNorm(doc=2759)
0.014964024 = product of:
0.029928047 = sum of:
0.029928047 = weight(_text_:22 in 2759) [ClassicSimilarity], result of:
0.029928047 = score(doc=2759,freq=2.0), product of:
0.15470642 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04417874 = queryNorm
0.19345059 = fieldWeight in 2759, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=2759)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Date
- 22. 3.2009 19:02:48
- Footnote
- Vgl. auch: Raan, A.F.J. van: Scaling rules in the science system: influence of field-specific citation characteristics on the impact of research groups. In: Journal of the American Society for Information Science and Technology. 59(2008) no.4, S.565-576.
-
Tijssen, R.J.W.; Wijk, E. van: ¬The global science base of information and communication technologies : bibliometric analysis of ICT research papers (1998)
0.07
0.072688974 = product of:
0.14537795 = sum of:
0.12143551 = weight(_text_:van in 3691) [ClassicSimilarity], result of:
0.12143551 = score(doc=3691,freq=2.0), product of:
0.2463667 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04417874 = queryNorm
0.49290553 = fieldWeight in 3691, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0625 = fieldNorm(doc=3691)
0.023942437 = product of:
0.047884874 = sum of:
0.047884874 = weight(_text_:22 in 3691) [ClassicSimilarity], result of:
0.047884874 = score(doc=3691,freq=2.0), product of:
0.15470642 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04417874 = queryNorm
0.30952093 = fieldWeight in 3691, 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=3691)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Date
- 22. 5.1999 19:26:54
-
H-Index auch im Web of Science (2008)
0.07
0.06821496 = product of:
0.13642992 = sum of:
0.047827628 = weight(_text_:h in 590) [ClassicSimilarity], result of:
0.047827628 = score(doc=590,freq=14.0), product of:
0.10975983 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04417874 = queryNorm
0.435748 = fieldWeight in 590, product of:
3.7416575 = tf(freq=14.0), with freq of:
14.0 = termFreq=14.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.046875 = fieldNorm(doc=590)
0.08860229 = sum of:
0.052688632 = weight(_text_:der in 590) [ClassicSimilarity], result of:
0.052688632 = score(doc=590,freq=26.0), product of:
0.098685004 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.04417874 = queryNorm
0.5339072 = fieldWeight in 590, product of:
5.0990195 = tf(freq=26.0), with freq of:
26.0 = termFreq=26.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.046875 = fieldNorm(doc=590)
0.035913654 = weight(_text_:22 in 590) [ClassicSimilarity], result of:
0.035913654 = score(doc=590,freq=2.0), product of:
0.15470642 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04417874 = 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(2/4)
- Content
- "Zur Kurzmitteilung "Latest enhancements in Scopus: ... h-Index incorporated in Scopus" in den letzten Online-Mitteilungen (Online-Mitteilungen 92, S.31) ist zu korrigieren, dass der h-Index sehr wohl bereits im Web of Science enthalten ist. Allerdings findet man/frau diese Information nicht in der "cited ref search", sondern neben der Trefferliste einer Quick Search, General Search oder einer Suche über den Author Finder in der rechten Navigationsleiste unter dem Titel "Citation Report". Der "Citation Report" bietet für die in der jeweiligen Trefferliste angezeigten Arbeiten: - Die Gesamtzahl der Zitierungen aller Arbeiten in der Trefferliste - Die mittlere Zitationshäufigkeit dieser Arbeiten - Die Anzahl der Zitierungen der einzelnen Arbeiten, aufgeschlüsselt nach Publikationsjahr der zitierenden Arbeiten - Die mittlere Zitationshäufigkeit dieser Arbeiten pro Jahr - Den h-Index (ein h-Index von x sagt aus, dass x Arbeiten der Trefferliste mehr als x-mal zitiert wurden; er ist gegenüber sehr hohen Zitierungen einzelner Arbeiten unempfindlicher als die mittlere Zitationshäufigkeit)."
- Date
- 6. 4.2008 19:04:22
- Object
- H-Index
- Source
- Mitteilungen der Vereinigung Österreichischer Bibliothekarinnen und Bibliothekare. 61(2008) H.1, S.124-125
-
Thelwall, M.; Ruschenburg, T.: Grundlagen und Forschungsfelder der Webometrie (2006)
0.06
0.06354877 = product of:
0.12709755 = sum of:
0.02410286 = weight(_text_:h in 77) [ClassicSimilarity], result of:
0.02410286 = score(doc=77,freq=2.0), product of:
0.10975983 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04417874 = queryNorm
0.21959636 = fieldWeight in 77, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0625 = fieldNorm(doc=77)
0.102994695 = sum of:
0.05510982 = weight(_text_:der in 77) [ClassicSimilarity], result of:
0.05510982 = score(doc=77,freq=16.0), product of:
0.098685004 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.04417874 = queryNorm
0.5584417 = fieldWeight in 77, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.0625 = fieldNorm(doc=77)
0.047884874 = weight(_text_:22 in 77) [ClassicSimilarity], result of:
0.047884874 = score(doc=77,freq=2.0), product of:
0.15470642 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04417874 = 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(2/4)
- Abstract
- Die Webometrie ist ein Teilbereich der Informationswissenschaft der zur Zeit auf die Analyse von Linkstrukturen konzentriert ist. Er ist stark von der Zitationsanalyse geprägt, wie der empirische Schwerpunkt auf der Wissenschaftsanalyse zeigt. In diesem Beitrag diskutieren wir die Nutzung linkbasierter Maße in einem breiten informetrischen Kontext und bewerten verschiedene Verfahren, auch im Hinblick auf ihr generelles Potentialfür die Sozialwissenschaften. Dabei wird auch ein allgemeiner Rahmenfür Linkanalysen mit den erforderlichen Arbeitsschritten vorgestellt. Abschließend werden vielversprechende zukünftige Anwendungsfelder der Webometrie benannt, unter besonderer Berücksichtigung der Analyse von Blogs.
- Date
- 4.12.2006 12:12:22
- Source
- Information - Wissenschaft und Praxis. 57(2006) H.8, S.401-406
-
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)
0.06
0.0616524 = product of:
0.1233048 = sum of:
0.10625607 = weight(_text_:van in 1075) [ClassicSimilarity], result of:
0.10625607 = score(doc=1075,freq=2.0), product of:
0.2463667 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04417874 = queryNorm
0.43129233 = fieldWeight in 1075, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0546875 = fieldNorm(doc=1075)
0.017048731 = product of:
0.034097463 = sum of:
0.034097463 = weight(_text_:der in 1075) [ClassicSimilarity], result of:
0.034097463 = score(doc=1075,freq=8.0), product of:
0.098685004 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.04417874 = queryNorm
0.34551817 = fieldWeight in 1075, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.0546875 = fieldNorm(doc=1075)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Abstract
- In einer szientometrischen bzw. informetrischen Studie werden internationale wie deutschsprachige Zeitschriften der Informations-/Bibliothekswissenschaft und -praxis mittels Zitationsanalyse und Expertenbefragung analysiert. Die zitatenanalytischen Kennwerte umfassen den Impact Factor, die Halbwertszeit, die Zitierfreudigkeit, die relative Häufigkeit von Zeitschriftenselbstreferenzen sowie Soziogramme der einflussreichen Periodika. Der Fragebogen erhebt die Lesehäufigkeit, die Einsetzbarkeit der gelesenen Journale im Tätigkeitsbereich, die Publikationstätigkeit und die Publikationspräferenz sowohl für alle Respondenten als auch für abgrenzbare Gruppen (Praktiker vs. Wissenschaftler, Bibliothekare vs. Dokumentare vs. Informationswissenschaftler, öffentlicher Dienst vs. Informationswirtschaft vs. andere Wirtschaftsunternehmen).
-
Raan, A.F.J. van: Statistical properties of bibliometric indicators : research group indicator distributions and correlations (2006)
0.06
0.05823571 = product of:
0.11647142 = sum of:
0.09107663 = weight(_text_:van in 5275) [ClassicSimilarity], result of:
0.09107663 = score(doc=5275,freq=2.0), product of:
0.2463667 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04417874 = queryNorm
0.36967915 = fieldWeight in 5275, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.046875 = fieldNorm(doc=5275)
0.025394792 = product of:
0.050789583 = sum of:
0.050789583 = weight(_text_:22 in 5275) [ClassicSimilarity], result of:
0.050789583 = score(doc=5275,freq=4.0), product of:
0.15470642 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04417874 = 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(2/4)
- Date
- 22. 7.2006 16:20:22
-
Weeber, M.; Klein, H.; Jong-van den Berg, L.T.W. de; Vos, R.: Using concepts in literature-based discovery : simulating Swanson's Raynaud-Fish Oil and Migraine-Manesium discoveries (2001)
0.05
0.054576885 = product of:
0.10915377 = sum of:
0.018077143 = weight(_text_:h in 5910) [ClassicSimilarity], result of:
0.018077143 = score(doc=5910,freq=2.0), product of:
0.10975983 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04417874 = queryNorm
0.16469726 = fieldWeight in 5910, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.046875 = fieldNorm(doc=5910)
0.09107663 = weight(_text_:van in 5910) [ClassicSimilarity], result of:
0.09107663 = score(doc=5910,freq=2.0), product of:
0.2463667 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04417874 = queryNorm
0.36967915 = fieldWeight in 5910, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.046875 = fieldNorm(doc=5910)
0.5 = coord(2/4)
-
Impe, S. van; Rousseau, R.: Web-to-print citations and the humanities (2006)
0.05
0.054576885 = product of:
0.10915377 = sum of:
0.018077143 = weight(_text_:h in 82) [ClassicSimilarity], result of:
0.018077143 = score(doc=82,freq=2.0), product of:
0.10975983 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04417874 = queryNorm
0.16469726 = fieldWeight in 82, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.046875 = fieldNorm(doc=82)
0.09107663 = weight(_text_:van in 82) [ClassicSimilarity], result of:
0.09107663 = score(doc=82,freq=2.0), product of:
0.2463667 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04417874 = queryNorm
0.36967915 = fieldWeight in 82, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.046875 = fieldNorm(doc=82)
0.5 = coord(2/4)
- Source
- Information - Wissenschaft und Praxis. 57(2006) H.8, S.422-426
-
Science and technology indicators (1998)
0.05
0.053128034 = product of:
0.21251214 = sum of:
0.21251214 = weight(_text_:van in 325) [ClassicSimilarity], result of:
0.21251214 = score(doc=325,freq=2.0), product of:
0.2463667 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04417874 = queryNorm
0.86258465 = fieldWeight in 325, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.109375 = fieldNorm(doc=325)
0.25 = coord(1/4)
- Editor
- Raan, A.F.J. van
-
Jovanovic, M.: ¬Eine kleine Frühgeschichte der Bibliometrie (2012)
0.05
0.0523062 = product of:
0.1046124 = sum of:
0.018077143 = weight(_text_:h in 326) [ClassicSimilarity], result of:
0.018077143 = score(doc=326,freq=2.0), product of:
0.10975983 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04417874 = queryNorm
0.16469726 = fieldWeight in 326, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.046875 = fieldNorm(doc=326)
0.08653526 = sum of:
0.050621606 = weight(_text_:der in 326) [ClassicSimilarity], result of:
0.050621606 = score(doc=326,freq=24.0), product of:
0.098685004 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.04417874 = queryNorm
0.5129615 = fieldWeight in 326, product of:
4.8989797 = tf(freq=24.0), with freq of:
24.0 = termFreq=24.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.046875 = fieldNorm(doc=326)
0.035913654 = weight(_text_:22 in 326) [ClassicSimilarity], result of:
0.035913654 = score(doc=326,freq=2.0), product of:
0.15470642 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04417874 = 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(2/4)
- 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
- Source
- Information - Wissenschaft und Praxis. 63(2012) H.2, S.71-80
-
Schlögl, C.: Internationale Sichtbarkeit der europäischen und insbesondere der deutschsprachigen Informationswissenschaft (2013)
0.05
0.05055569 = product of:
0.10111138 = sum of:
0.02109 = weight(_text_:h in 900) [ClassicSimilarity], result of:
0.02109 = score(doc=900,freq=2.0), product of:
0.10975983 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04417874 = queryNorm
0.19214681 = fieldWeight in 900, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0546875 = fieldNorm(doc=900)
0.08002138 = sum of:
0.03812212 = weight(_text_:der in 900) [ClassicSimilarity], result of:
0.03812212 = score(doc=900,freq=10.0), product of:
0.098685004 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.04417874 = queryNorm
0.38630107 = fieldWeight in 900, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.0546875 = fieldNorm(doc=900)
0.041899264 = weight(_text_:22 in 900) [ClassicSimilarity], result of:
0.041899264 = score(doc=900,freq=2.0), product of:
0.15470642 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04417874 = queryNorm
0.2708308 = fieldWeight in 900, 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=900)
0.5 = coord(2/4)
- Abstract
- In diesem Beitrag wird eine Publikationsanalyse von Beiträgen in von im Web of Science (WoS) indexierten bibliotheks- und informationswissenschaftlichen Zeitschriften vorgestellt. Die Ergebnisse dieser Analyse bestätigen die anglo-amerikanische Dominanz in der facheinschlägigen Literatur, die bei den primär informationswissenschaftlichen Zeitschriften sogar noch deutlicher ausfällt. Die skandinavischen Länder und der Bereich der Szientometrie stellen gewisse Ausnahmen dar. Die internationale Sichtbarkeit Deutschlands und Österreichs ist hingegen "ausbaufähig".
- Date
- 22. 3.2013 14:04:09
- Source
- Information - Wissenschaft und Praxis. 64(2013) H.1, S.1-8
-
Hjoerland, B.: Does informetrics need a theory? : a rejoinder to professor anthony van raan (2017)
0.05
0.045538314 = product of:
0.18215325 = sum of:
0.18215325 = weight(_text_:van in 3967) [ClassicSimilarity], result of:
0.18215325 = score(doc=3967,freq=2.0), product of:
0.2463667 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04417874 = queryNorm
0.7393583 = fieldWeight in 3967, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.09375 = fieldNorm(doc=3967)
0.25 = coord(1/4)
-
Johan Bollen, J.; Van de Sompel, H.: Usage impact factor : the effects of sample characteristics on usage-based impact metrics (2008)
0.05
0.045480736 = product of:
0.09096147 = sum of:
0.015064287 = weight(_text_:h in 1346) [ClassicSimilarity], result of:
0.015064287 = score(doc=1346,freq=2.0), product of:
0.10975983 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04417874 = queryNorm
0.13724773 = fieldWeight in 1346, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0390625 = fieldNorm(doc=1346)
0.07589719 = weight(_text_:van in 1346) [ClassicSimilarity], result of:
0.07589719 = score(doc=1346,freq=2.0), product of:
0.2463667 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04417874 = queryNorm
0.30806595 = fieldWeight in 1346, 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=1346)
0.5 = coord(2/4)
-
Ball, R.: Wissenschaftsindikatoren im Zeitalter digitaler Wissenschaft (2007)
0.04
0.0435885 = product of:
0.087177 = sum of:
0.015064287 = weight(_text_:h in 875) [ClassicSimilarity], result of:
0.015064287 = score(doc=875,freq=2.0), product of:
0.10975983 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04417874 = queryNorm
0.13724773 = fieldWeight in 875, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0390625 = fieldNorm(doc=875)
0.07211272 = sum of:
0.04218467 = weight(_text_:der in 875) [ClassicSimilarity], result of:
0.04218467 = score(doc=875,freq=24.0), product of:
0.098685004 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.04417874 = queryNorm
0.42746788 = fieldWeight in 875, product of:
4.8989797 = tf(freq=24.0), with freq of:
24.0 = termFreq=24.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.0390625 = fieldNorm(doc=875)
0.029928047 = weight(_text_:22 in 875) [ClassicSimilarity], result of:
0.029928047 = score(doc=875,freq=2.0), product of:
0.15470642 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04417874 = queryNorm
0.19345059 = fieldWeight in 875, 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=875)
0.5 = coord(2/4)
- Abstract
- Die Bereitstellung und Nutzung digitaler Bibliotheken entwickelt sich allmählich zum Standard der Literatur und Informationsversorgung in Wissenschaft und Forschung. Ganzen Disziplinen genügt oftmals die verfügbare digitale Information, Printmedien werden besonders im STM-Segment zu einem Nischenprodukt. Digitale Texte können beliebig eingebaut, kopiert und nachgenutzt werden, die Verlinkung zwischen Metadaten und Volltexten bringt weitere Nutzungsvorteile. Dabei sind die Angebote von Digital Libraries Bestandteil eines ganzheitlichen digitalen Ansatzes, wonach die elektronische Informations- und Literaturversorgung integraler Bestandteil von E-Science (Enhanced Science) oder Cyberinfrastructure darstellt. Hierbei verschmelzen dann Produktion, Diskussion, Distribution und Rezeption der wissenschaftlichen Inhalte auf einer einzigen digitalen Plattform. Damit sind dann nicht nur die Literatur- und Informationsversorgung (Digital Libraries), sondern auch die Wissenschaft selbst digital geworden. Diese dramatische Veränderung in der Wissenschaftskommunikation hat direkte Auswirkungen auf die Messung der Wissenschaftskommunikation, also auf die Evaluation von wissenschaftlichem Output. Bisherige Systeme der Wissenschaftsvermessung basieren hauptsächlich auf bibliometrischen Analysen, d.h. der Quantifizierung des Outputs und dessen Rezeption (Zitierhäufigkeit). Basis dafür sind insbesondere im STM-Bereich die international anerkannten Datenbanken des ISI (Thomson Scientific) insbesondere der Science Citation Index, SCI) oder vielleicht zukünftig das Konkurrenzprodukt SCOPUS des Wissenschaftskonzerns Reed Elsevier. Die Digitalisierung der Wissenschaft in ihrem kompletten Lebenszyklus, die zunehmende Nutzung und Akzeptanz von Dokumentenrepositorien, Institutsservern und anderen elektronischen Publikationsformen im Rahmen von E-Science erfordern und ermöglichen zugleich den Nachweis von Output und Rezeption durch neue bibliometrische Formen, etwa der Webometrie (Webmetrics). Im vorliegenden Paper haben wir hierzu Analysen durchgeführt und stellen eine Abschätzung vor, wie sich der Anteil von webometrisch erfassbarer und zugänglicher wissenschaftlicher Literatur im Vergleich zu Literatur, die mit den Standardsystemen nachgewiesen werden kann im Laufe der letzten Jahre verändert hat. Dabei haben wir unterschiedliche Disziplinen und Länder berücksichtigt. Zudem wird ein Vergleich der webometrischen Nachweisqualität so unterschiedlicher Systeme wie SCI, SCOPUS und Google Scholar vorgestellt.
- Date
- 23.12.2007 19:22:21
- Source
- B.I.T.online. 10(2007) H.2, S.xxx-xxx
