Search (1177 results, page 59 of 59)

  • × theme_ss:"Informetrie"
  1. Kostoff, R.N.; Rio, J.A. del; Humenik, J.A.; Garcia, E.O.; Ramirez, A.M.: Citation mining : integrating text mining and bibliometrics for research user profiling (2001) 0.00 
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    Source
    Journal of the American Society for Information Science and technology. 52(2001) no.13, S.1148-1156
  2. Száva-Kováts, E.: Indirect-collective referencing (ICR) in the elite journal literature of physics : II: a literature science study on the level of communications (2002) 0.00 
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    Journal of the American Society for Information Science and technology. 53(2002) no.1, S.47-56
  3. Bibliometrische Analysen - ein Beitrag für ein gerechtes Notensystem in der Forschung? : Konferenz in Jülich (2004) 0.00 
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    Content
    "Bibliometriker analysieren Publikationen und deren Beziehungen untereinander; ihre »Werkzeuge« sind mathematische und statistische Verfahren. Sie haben eine Reihe von Indikatoren entwickelt, die immer häufiger herangezogen werden, um wissenschaftliche Leistung zu bewerten. Einig waren sich die Teilnehmer der Jülicher Konferenz darüber, dass die bibliometrische Analyse andere etablierte Bewertungsmethoden nur ergänzen, nicht aber ersetzen kann. Zu diesen zählt beispielsweise das »peer review«, ein Gutachterverfahren: Hier entscheidet jeweils ein Gremium renommierter Fachkollegen darüber, ob ein Forschungsprojekt gefördert oder ob ein Beitrag in einer Fachzeitschrift aufgenommen werden sollte. Kritiker sind überzeugt, dass eine objektive Betrachtung nicht immer gegeben ist. Doch auch die Zitationsanalyse - eine wichtige bibliometrische Methode - ist nicht unumstritten. Wie häufig eine wissenschaftliche Arbeit zitiert wird, muss nicht unbedingt etwas über ihre Qualität aussagen: So zitiert ein Wissenschaftler die These eines Kollegen möglicherweise nur, um sie zu widerlegen. Weltweit führender Anbieter bibliometrischer Daten ist das amerikanischen Institute of Scientific Information (ISI) mit dem »Science Citation Index«, der weltweit größten Datenbank mit bibliometrisch verwertbaren Daten. Zu den bibliometrischen Indikatoren gehört auch der »Impact-Faktor«, der Auskunft darüber gibt, wie häufig die Artikel einer bestimmten Fachzeitschrift in anderen Publikationen zitiert werden. Immer wieder warnten die Tagungsteilnehmer davor, die Bedeutung dieses Faktors zu überschätzen. Ein Problem ist beispielsweise die Ver gleichbarkeit von verschiedenen Forschungsrichtungen. So haben biomedizinische Fachzeitschriften nahezu immer einen höheren Impact-Faktor als Blätter, in denen Ergebnisse aus der physikalischen Grundlagenforschung publiziert werden - ohne dass sich ein Unterschied in Qualität oder Bedeutung feststellen lässt. Der reine Vergleich des Impact-Faktors ist also nur innerhalb eines Fachgebiets möglich-alles andere hieße, Äpfel mit Birnen zu vergleichen. Die Jülicher Konferenz hat erstmals alle Beteiligten - Wissenschaftler, Forschungsmanager und Informationsfachleutezusammengebracht. Veranstaltet wurde die Tagung von der Zentralbibliothek des Forschungszentrums, einer der größten außeruniversitären Spezialbibliotheken in Deutschland. Dazu Rafael Ball, Leiter der Zentralbibliothek: »Die Forschungsförderung braucht ein Notensystem, das die Wissenschaft gerechter als bisher bewertet. Dazu kann die Informationswissenschaft mit der Durchführung bibliometrischer Analysen Hilfestellungleisten.« Fazit der Jülicher Tagung: Die bibliometrische Analyse kann einen wesentlichen, aber begrenzten Beitrag für die Evaluierung von Wissenschaft leisten. Wichtige Faktoren für den Erfolg der Bibliometrie sind eindeutige Vorgaben der Auftraggeber, Transparenz der ermittelten Daten und praxisorientierte Vorgehensweise. Bleibt als Resümee festzuhalten: Man darf die Veröffentlichungen nicht nur zählen, man muss sie lesen! - Der Proceedingsband der Tagung kann im Eigenverlag des Forschungszentrums (Kontakt: R. Relius, Forschungszentrum Jülich, Zentralbibliothek; Telefax 0 24 61/61-6103, Internet <www.fz-juelich.de/zb/verlag>) schriftlich bestellt werden."
  4. Umstätter, W.: Szientometrische Verfahren (2004) 0.00 
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    Grundlagen der praktischen Information und Dokumentation. 5., völlig neu gefaßte Ausgabe. 2 Bde. Hrsg. von R. Kuhlen, Th. Seeger u. D. Strauch. Begründet von Klaus Laisiepen, Ernst Lutterbeck, Karl-Heinrich Meyer-Uhlenried. Bd.1: Handbuch zur Einführung in die Informationswissenschaft und -praxis
  5. Petersen, A.; Münch, V.: STN® AnaVist(TM) holt verborgenes Wissen aus Recherche-Ergebnissen : Neue Software analysiert und visualisiert Marktaufteilung, Forschung und Patentaktivitäten (2005) 0.00 
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    Information - Wissenschaft und Praxis. 56(2005) H.5/6, S.319-322
  6. Moed, H.F.; Leeuwen, T.N. van; Reedijk, J.: ¬A new classification system to describe the ageing of scientific journals and their impact factors (1998) 0.00 
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    Abstract
    During the past decades, journal impact data obtained from the Journal Citation Reports (JCR) have gained relevance in library management, research management and research evaluation. Hence, both information scientists and bibliometricians share the responsibility towards the users of the JCR to analyse the reliability and validity of its measures thoroughly, to indicate pitfalls and to suggest possible improvements. In this article, ageing patterns are examined in 'formal' use or impact of all scientific journals processed for the Science Citation Index (SCI) during 1981-1995. A new classification system of journals in terms of their ageing characteristics is introduced. This system has been applied to as many as 3,098 journals covered by the Science Citation Index. Following an earlier suggestion by Glnzel and Schoepflin, a maturing and a decline phase are distinguished. From an analysis across all subfields it has been concluded that ageing characteristics are primarily specific to the individual journal rather than to the subfield, while the distribution of journals in terms of slowly or rapidly maturing or declining types is specific to the subfield. It is shown that the cited half life (CHL), printed in the JCR, is an inappropriate measure of decline of journal impact. Following earlier work by Line and others, a more adequate parameter of decline is calculated taking into account the size of annual volumes during a range of fifteen years. For 76 per cent of SCI journals the relative difference between this new parameter and the ISI CHL exceeds 5 per cent. The current JCR journal impact factor is proven to be biased towards journals revealing a rapid maturing and decline in impact. Therefore, a longer term impact factor is proposed, as well as a normalised impact statistic, taking into account citation characteristics of the research subfield covered by a journal and the type of documents published in it. When these new measures are combined with the proposed ageing classification system, they provide a significantly improved picture of a journal's impact to that obtained from the JCR.
  7. Egghe, L.: Empirical and combinatorial study of country occurrences in multi-authored papers (2006) 0.00 
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    Source
    Information - Wissenschaft und Praxis. 57(2006) H.8, S.427-432
  8. Raan, A.F.J. van: Performance-related differences of bibliometric statistical properties of research groups : cumulative advantages and hierarchically layered networks (2006) 0.00 
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    Source
    Journal of the American Society for Information Science and Technology. 57(2006) no.14, S.1919-1935
  9. Bonitz, M.: Ranking of nations and heightened competition in Matthew core journals : two faces of the Matthew effect for countries (2002) 0.00 
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    Footnote
    Artikel in einem Themenheft "Current theory in library and information science"
  10. Hamilton, E.C.: ¬The impact of survey data : measuring success (2007) 0.00 
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    Journal of the American Society for Information Science and Technology. 58(2007) no.2, S.190-199
  11. Barjak, F.; Li, X.; Thelwall, M.: Which factors explain the Web impact of scientists' personal homepages? (2007) 0.00 
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    Journal of the American Society for Information Science and Technology. 58(2007) no.2, S.200-211
  12. Schneider, J.W.; Borlund, P.: Matrix comparison, part 2 : measuring the resemblance between proximity measures or ordination results by use of the mantel and procrustes statistics (2007) 0.00 
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    Journal of the American Society for Information Science and Technology. 58(2007) no.11, S.1596-1609
  13. Schneider, J.W.; Borlund, P.: Matrix comparison, part 1 : motivation and important issues for measuring the resemblance between proximity measures or ordination results (2007) 0.00 
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    Journal of the American Society for Information Science and Technology. 58(2007) no.11, S.1586-1595
  14. Lawrence, S.: Online or Invisible? (2001) 0.00 
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    Content
    The volume of scientific literature typically far exceeds the ability of scientists to identify and utilize all relevant information in their research. Improvements to the accessibility of scientific literature, allowing scientists to locate more relevant research within a given time, have the potential to dramatically improve communication and progress in science. With the web, scientists now have very convenient access to an increasing amount of literature that previously required trips to the library, inter-library loan delays, or substantial effort in locating the source. Evidence shows that usage increases when access is more convenient, and maximizing the usage of the scientific record benefits all of society. Although availability varies greatly by discipline, over a million research articles are freely available on the web. Some journals and conferences provide free access online, others allow authors to post articles on the web, and others allow authors to purchase the right to post their articles on the web. In this article we investigate the impact of free online availability by analyzing citation rates. We do not discuss methods of creating free online availability, such as time-delayed release or publication/membership/conference charges. Online availability of an article may not be expected to greatly improve access and impact by itself. For example, efficient means of locating articles via web search engines or specialized search services is required, and a substantial percentage of the literature needs to be indexed by these search services before it is worthwhile for many scientists to use them. Computer science is a forerunner in web availability -- a substantial percentage of the literature is online and available through search engines such as Google (google.com), or specialized services such as ResearchIndex (researchindex.org). Even so, the greatest impact of the online availability of computer science literature is likely yet to come, because comprehensive search services and more powerful search methods have only become available recently. We analyzed 119,924 conference articles in computer science and related disciplines, obtained from DBLP (dblp.uni-trier.de). In computer science, conference articles are typically formal publications and are often more prestigious than journal articles, with acceptance rates at some conferences below 10%. Citation counts and online availability were estimated using ResearchIndex. The analysis excludes self-citations, where a citation is considered to be a self-citation if one or more of the citing and cited authors match.
  15. Bensman, S.J.; Smolinsky, L.J.; Pudovkin, A.I.: Mean citation rate per article in mathematics journals : differences from the scientific model (2010) 0.00 
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    Journal of the American Society for Information Science and Technology. 61(2010) no.7, S.1440-1463
  16. Schloegl, C.; Gorraiz, J.: Global usage versus global citation metrics : the case of pharmacology journals (2011) 0.00 
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    Journal of the American Society for Information Science and Technology. 62(2011) no.1, S.161-170
  17. Gingras, Y.: Bibliometrics and research evaluation : uses and abuses (2016) 0.00 
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    Series
    History and foundations of information science

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