-
Marx, W.: Wie mißt man Forschungsqualität? : der Science Citation Index - ein Maßstab für die Bewertung (1996)
0.01
0.0050177206 = product of:
0.03846919 = sum of:
0.010232903 = weight(_text_:und in 5036) [ClassicSimilarity], result of:
0.010232903 = score(doc=5036,freq=2.0), product of:
0.052235067 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.023567878 = queryNorm
0.19590102 = fieldWeight in 5036, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=5036)
0.016645677 = weight(_text_:im in 5036) [ClassicSimilarity], result of:
0.016645677 = score(doc=5036,freq=2.0), product of:
0.066621356 = queryWeight, product of:
2.8267863 = idf(docFreq=7115, maxDocs=44218)
0.023567878 = queryNorm
0.24985497 = fieldWeight in 5036, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.8267863 = idf(docFreq=7115, maxDocs=44218)
0.0625 = fieldNorm(doc=5036)
0.011590611 = product of:
0.023181222 = sum of:
0.023181222 = weight(_text_:international in 5036) [ClassicSimilarity], result of:
0.023181222 = score(doc=5036,freq=2.0), product of:
0.078619614 = queryWeight, product of:
3.33588 = idf(docFreq=4276, maxDocs=44218)
0.023567878 = queryNorm
0.2948529 = fieldWeight in 5036, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.33588 = idf(docFreq=4276, maxDocs=44218)
0.0625 = fieldNorm(doc=5036)
0.5 = coord(1/2)
0.13043478 = coord(3/23)
- Abstract
- Ein überfordertes Gutachter-System, knapper fließende Forschungsgelder sowie die starke Faszination von Ranglisten bewirken zunehmend den Einsatz bibliometrischer Methoden zur Messung von Forschungsqualität. Grundlage der meisten Bewertungen ist der Science Citation Index, der nun auch in der Version als Online-Datenbank für umfangreiche Analysen genutzt werden kann. Erweiterungen der Retrievalsprache beim Host STN International ermöglichen statistische Analysen, die bisher nur dem SCI-Hersteller und wenigen Spezialisten vorbehalten waren. Voraussetzung für eine sinnvolle Anwendung sind vor allem die Wahl geeigneter Selektionskriterien sowie die sorgfältige Interpretation der Ergebnisse im Rahmen der Grenzen dieser Methoden
-
Bornmann, L.; Marx, W.: Distributions instead of single numbers : percentiles and beam plots for the assessment of single researchers (2014)
0.00
0.0014588641 = product of:
0.033553872 = sum of:
0.033553872 = sum of:
0.010999122 = weight(_text_:1 in 1190) [ClassicSimilarity], result of:
0.010999122 = score(doc=1190,freq=2.0), product of:
0.057894554 = queryWeight, product of:
2.4565027 = idf(docFreq=10304, maxDocs=44218)
0.023567878 = queryNorm
0.18998542 = fieldWeight in 1190, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4565027 = idf(docFreq=10304, maxDocs=44218)
0.0546875 = fieldNorm(doc=1190)
0.02255475 = weight(_text_:29 in 1190) [ClassicSimilarity], result of:
0.02255475 = score(doc=1190,freq=2.0), product of:
0.08290443 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.023567878 = queryNorm
0.27205724 = fieldWeight in 1190, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0546875 = fieldNorm(doc=1190)
0.04347826 = coord(1/23)
- Date
- 29. 1.2014 15:58:21
- Source
- Journal of the Association for Information Science and Technology. 65(2014) no.1, S.206-208
-
Bornmann, L.; Schier, H.; Marx, W.; Daniel, H.-D.: Is interactive open access publishing able to identify high-impact submissions? : a study on the predictive validity of Atmospheric Chemistry and Physics by using percentile rank classes (2011)
0.00
0.0010420457 = product of:
0.02396705 = sum of:
0.02396705 = sum of:
0.007856515 = weight(_text_:1 in 4132) [ClassicSimilarity], result of:
0.007856515 = score(doc=4132,freq=2.0), product of:
0.057894554 = queryWeight, product of:
2.4565027 = idf(docFreq=10304, maxDocs=44218)
0.023567878 = queryNorm
0.13570388 = fieldWeight in 4132, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4565027 = idf(docFreq=10304, maxDocs=44218)
0.0390625 = fieldNorm(doc=4132)
0.016110536 = weight(_text_:29 in 4132) [ClassicSimilarity], result of:
0.016110536 = score(doc=4132,freq=2.0), product of:
0.08290443 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.023567878 = queryNorm
0.19432661 = fieldWeight in 4132, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0390625 = fieldNorm(doc=4132)
0.04347826 = coord(1/23)
- Date
- 8. 1.2011 18:29:40
- Source
- Journal of the American Society for Information Science and Technology. 62(2011) no.1, S.61-71
-
Neuhaus, C.; Marx, W.; Daniel, H.-W.: ¬The publication and citation impact profiles of Angewandte Chemie and the Journal of the American Chemical Society based on the sections of Chemical Abstracts : a case study on the limitations of the Journal Impact Factor (2009)
0.00
9.859484E-4 = product of:
0.011338406 = sum of:
0.0031426062 = product of:
0.0062852125 = sum of:
0.0062852125 = weight(_text_:1 in 2707) [ClassicSimilarity], result of:
0.0062852125 = score(doc=2707,freq=2.0), product of:
0.057894554 = queryWeight, product of:
2.4565027 = idf(docFreq=10304, maxDocs=44218)
0.023567878 = queryNorm
0.1085631 = fieldWeight in 2707, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4565027 = idf(docFreq=10304, maxDocs=44218)
0.03125 = fieldNorm(doc=2707)
0.5 = coord(1/2)
0.0081958 = product of:
0.0163916 = sum of:
0.0163916 = weight(_text_:international in 2707) [ClassicSimilarity], result of:
0.0163916 = score(doc=2707,freq=4.0), product of:
0.078619614 = queryWeight, product of:
3.33588 = idf(docFreq=4276, maxDocs=44218)
0.023567878 = queryNorm
0.2084925 = fieldWeight in 2707, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.33588 = idf(docFreq=4276, maxDocs=44218)
0.03125 = fieldNorm(doc=2707)
0.5 = coord(1/2)
0.08695652 = coord(2/23)
- Abstract
- The Journal Impact Factor (JIF) published by Thomson Reuters is often used to evaluate the significance and performance of scientific journals. Besides methodological problems with the JIF, the critical issue is whether a single measure is sufficient for characterizing the impact of journals, particularly the impact of multidisciplinary and wide-scope journals that publish articles in a broad range of research fields. Taking Angewandte Chemie International Edition and the Journal of the American Chemical Society as examples, we examined the two journals' publication and impact profiles across the sections of Chemical Abstracts and compared the results with the JIF. The analysis was based primarily on Communications published in Angewandte Chemie International Edition and the Journal of the American Chemical Society during 2001 to 2005. The findings show that the information available in the Science Citation Index is a rather unreliable indication of the document type and is therefore inappropriate for comparative analysis. The findings further suggest that the composition of the journal in terms of contribution types, the length of the citation window, and the thematic focus of the journal in terms of the sections of Chemical Abstracts has a significant influence on the overall journal citation impact. Therefore, a single measure of journal citation impact such as the JIF is insufficient for characterizing the significance and performance of wide-scope journals. For the comparison of journals, more sophisticated methods such as publication and impact profiles across subject headings of bibliographic databases (e.g., the sections of Chemical Abstracts) are valuable.
- Source
- Journal of the American Society for Information Science and Technology. 60(2009) no.1, S.176-183
-
Marx, W.; Bornmann, L.: On the problems of dealing with bibliometric data (2014)
0.00
8.3298836E-4 = product of:
0.019158732 = sum of:
0.019158732 = product of:
0.038317464 = sum of:
0.038317464 = weight(_text_:22 in 1239) [ClassicSimilarity], result of:
0.038317464 = score(doc=1239,freq=2.0), product of:
0.08253069 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.023567878 = queryNorm
0.46428138 = fieldWeight in 1239, 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=1239)
0.5 = coord(1/2)
0.04347826 = coord(1/23)
- Date
- 18. 3.2014 19:13:22
-
Marx, W.; Gramm, G.: Literaturflut - Informationslawine - Wissensexplosion : Wächst der Wissenschaft das Wissen über den Kopf? (1997)
0.00
4.4490883E-4 = product of:
0.010232903 = sum of:
0.010232903 = weight(_text_:und in 1078) [ClassicSimilarity], result of:
0.010232903 = score(doc=1078,freq=2.0), product of:
0.052235067 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.023567878 = queryNorm
0.19590102 = fieldWeight in 1078, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=1078)
0.04347826 = coord(1/23)
- Source
- Beiträge zum XVIII. Fortbildungsseminar für Bibliotheksleiter/innen der Max-Planck-Institute und Arbeitsgruppen, 2.-5. Mai 1995 in Garching. Red.: H.C. Kuhn
