Search (126 results, page 1 of 7)

  • × year_i:[2000 TO 2010}
  • × theme_ss:"Informetrie"
  1. Pernik, V.; Schlögl, C.: Möglichkeiten und Grenzen von Web Structure Mining am Beispiel von informationswissenschaftlichen Hochschulinstituten im deutschsprachigen Raum (2006) 0.01 
    0.0145474505 = product of:
  0.04364235 = sum of:
    0.029623196 = weight(_text_:internet in 78) [ClassicSimilarity], result of:
      0.029623196 = score(doc=78,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.2609436 = fieldWeight in 78, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.0625 = fieldNorm(doc=78)
    0.014019156 = product of:
      0.042057466 = sum of:
        0.042057466 = weight(_text_:29 in 78) [ClassicSimilarity], result of:
          0.042057466 = score(doc=78,freq=2.0), product of:
            0.13526669 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.038453303 = queryNorm
            0.31092256 = fieldWeight in 78, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.0625 = fieldNorm(doc=78)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Date
    4.12.2006 12:14:29
    Theme
    Internet
  2. Kurtz, M.J.; Eichhorn, G.; Accomazzi, A.; Grant, C.; Demleitner, M.; Henneken, E.; Murray, S.S.: ¬The effect of use and access on citations (2005) 0.01 
    0.0145474505 = product of:
  0.04364235 = sum of:
    0.029623196 = weight(_text_:internet in 1064) [ClassicSimilarity], result of:
      0.029623196 = score(doc=1064,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.2609436 = fieldWeight in 1064, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.0625 = fieldNorm(doc=1064)
    0.014019156 = product of:
      0.042057466 = sum of:
        0.042057466 = weight(_text_:29 in 1064) [ClassicSimilarity], result of:
          0.042057466 = score(doc=1064,freq=2.0), product of:
            0.13526669 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.038453303 = queryNorm
            0.31092256 = fieldWeight in 1064, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.0625 = fieldNorm(doc=1064)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Abstract
    It has been shown (Lawrence, S. (2001). Online or invisible? Nature, 411, 521) that journal articles which have been posted without charge on the internet are more heavily cited than those which have not been. Using data from the NASA Astrophysics Data System (ads.harvard.edu) and from the ArXiv e-print archive at Cornell University (arXiv.org) we examine the causes of this effect.
    Date
    27.12.2007 17:16:29
  3. Thelwall, M.; Ruschenburg, T.: Grundlagen und Forschungsfelder der Webometrie (2006) 0.01 
    0.014505414 = product of:
  0.04351624 = sum of:
    0.029623196 = weight(_text_:internet in 77) [ClassicSimilarity], result of:
      0.029623196 = score(doc=77,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.2609436 = fieldWeight in 77, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.0625 = fieldNorm(doc=77)
    0.0138930455 = product of:
      0.041679136 = sum of:
        0.041679136 = weight(_text_:22 in 77) [ClassicSimilarity], result of:
          0.041679136 = score(doc=77,freq=2.0), product of:
            0.13465692 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.038453303 = 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)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Date
    4.12.2006 12:12:22
    Theme
    Internet
  4. Davis, P.M.; Cohen, S.A.: ¬The effect of the Web on undergraduate citation behavior 1996-1999 (2001) 0.01 
    0.013978171 = product of:
  0.041934513 = sum of:
    0.031420145 = weight(_text_:internet in 5768) [ClassicSimilarity], result of:
      0.031420145 = score(doc=5768,freq=4.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.27677247 = fieldWeight in 5768, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.046875 = fieldNorm(doc=5768)
    0.010514366 = product of:
      0.0315431 = sum of:
        0.0315431 = weight(_text_:29 in 5768) [ClassicSimilarity], result of:
          0.0315431 = score(doc=5768,freq=2.0), product of:
            0.13526669 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.038453303 = queryNorm
            0.23319192 = fieldWeight in 5768, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.046875 = fieldNorm(doc=5768)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Abstract
    A citation analysis of undergraduate term papers in microeconomics revealed a significant decrease in the frequency of scholarly resources cited between 1996 and 1999. Book citations decreased from 30% to 19%, newspaper citations increased from 7% to 19%, and Web citations increased from 9% to 21%. Web citations checked in 2000 revealed that only 18% of URLs cited in 1996 led to the correct Internet document. For 1999 bibliographies, only 55% of URLs led to the correct document. The authors recommend (1) setting stricter guidelines for acceptable citations in course assignments; (2) creating and maintaining scholarly portals for authoritative Web sites with a commitment to long-term access; and (3) continuing to instruct students how to critically evaluate resources
    Date
    29. 9.2001 14:01:09
    Theme
    Internet
  5. Mayr, P.; Tosques, F.: Webometrische Analysen mit Hilfe der Google Web APIs (2005) 0.01 
    0.012729019 = product of:
  0.038187057 = sum of:
    0.025920296 = weight(_text_:internet in 3189) [ClassicSimilarity], result of:
      0.025920296 = score(doc=3189,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.22832564 = fieldWeight in 3189, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3189)
    0.012266762 = product of:
      0.036800284 = sum of:
        0.036800284 = weight(_text_:29 in 3189) [ClassicSimilarity], result of:
          0.036800284 = score(doc=3189,freq=2.0), product of:
            0.13526669 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.038453303 = queryNorm
            0.27205724 = fieldWeight in 3189, 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=3189)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Abstract
    Der Report stellt die Möglichkeiten und Einschränkungen der Google Web APIs (Google API) dar. Die Implementierung der Google API anhand einzelner informationswissenschaftlicher Untersuchungen aus der Webometrie ergibt, dass die Google API mit Einschränkungen für internetbezogene Untersuchungen eingesetzt werden können. Vergleiche der Trefferergebnisse über die beiden Google-Schnittstellen Google API und die Standard Weboberfläche Google.com (Google Web) zeigen Unterschiede bezüglich der Reichweite, der Zusammensetzung und Verfügbarkeit. Die Untersuchung basiert auf einfachen und erweiterten Suchanfragen in den Sprachen Deutsch und Englisch. Die analysierten Treffermengen der Google API bestätigen tendenziell frühere Internet-Studien.
    Date
    12. 2.2005 18:29:36
  6. Vaughan, L.; Thelwall, M.: Scholarly use of the Web : what are the key inducers of links to journal Web sites? (2003) 0.01 
    0.011648476 = product of:
  0.03494543 = sum of:
    0.026183454 = weight(_text_:internet in 1236) [ClassicSimilarity], result of:
      0.026183454 = score(doc=1236,freq=4.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.23064373 = fieldWeight in 1236, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1236)
    0.008761973 = product of:
      0.026285918 = sum of:
        0.026285918 = weight(_text_:29 in 1236) [ClassicSimilarity], result of:
          0.026285918 = score(doc=1236,freq=2.0), product of:
            0.13526669 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.038453303 = queryNorm
            0.19432661 = fieldWeight in 1236, 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=1236)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Abstract
    Web links have been studied by information scientists for at least six years but it is only in the past two that clear evidence has emerged to show that counts of links to scholarly Web spaces (universities and departments) can correlate significantly with research measures, giving some credence to their use for the investigation of scholarly communication. This paper reports an a study to investigate the factors that influence the creation of links to journal Web sites. An empirical approach is used: collecting data and testing for significant patterns. The specific questions addressed are whether site age and site content are inducers of links to a journal's Web site as measured by the ratio of link counts to Journal Impact Factors, two variables previously discovered to be related. A new methodology for data collection is also introduced that uses the Internet Archive to obtain an earliest known creation date for Web sites. The results show that both site age and site content are significant factors for the disciplines studied: library and information science, and law. Comparisons between the two fields also show disciplinary differences in Web site characteristics. Scholars and publishers should be particularly aware that richer content an a journal's Web site tends to generate links and thus the traffic to the site.
    Source
    Journal of the American Society for Information Science and technology. 54(2003) no.1, S.29-38
    Theme
    Internet
  7. Menczer, F.: Lexical and semantic clustering by Web links (2004) 0.01 
    0.010910588 = product of:
  0.032731764 = sum of:
    0.022217397 = weight(_text_:internet in 3090) [ClassicSimilarity], result of:
      0.022217397 = score(doc=3090,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.1957077 = fieldWeight in 3090, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.046875 = fieldNorm(doc=3090)
    0.010514366 = product of:
      0.0315431 = sum of:
        0.0315431 = weight(_text_:29 in 3090) [ClassicSimilarity], result of:
          0.0315431 = score(doc=3090,freq=2.0), product of:
            0.13526669 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.038453303 = queryNorm
            0.23319192 = fieldWeight in 3090, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.046875 = fieldNorm(doc=3090)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Date
    9. 1.2005 19:20:29
    Theme
    Internet
  8. Zhang, Y.; Jansen, B.J.; Spink, A.: Identification of factors predicting clickthrough in Web searching using neural network analysis (2009) 0.01 
    0.01087906 = product of:
  0.03263718 = sum of:
    0.022217397 = weight(_text_:internet in 2742) [ClassicSimilarity], result of:
      0.022217397 = score(doc=2742,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.1957077 = fieldWeight in 2742, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.046875 = fieldNorm(doc=2742)
    0.010419784 = product of:
      0.03125935 = sum of:
        0.03125935 = weight(_text_:22 in 2742) [ClassicSimilarity], result of:
          0.03125935 = score(doc=2742,freq=2.0), product of:
            0.13465692 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.038453303 = queryNorm
            0.23214069 = fieldWeight in 2742, 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=2742)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Date
    22. 3.2009 17:49:11
    Theme
    Internet
  9. Juchem, K.; Schlögl, C.; Stock, W.G.: Dimensionen der Zeitschriftenszientometrie am Beispiel von "Buch und Bibliothek" (2006) 0.01 
    0.010127267 = product of:
  0.060763597 = sum of:
    0.060763597 = weight(_text_:bibliothek in 4931) [ClassicSimilarity], result of:
      0.060763597 = score(doc=4931,freq=4.0), product of:
        0.1578712 = queryWeight, product of:
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.038453303 = queryNorm
        0.38489348 = fieldWeight in 4931, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.046875 = fieldNorm(doc=4931)
  0.16666667 = coord(1/6)
    Abstract
    Dimensionen der Zeitschriftenszientometrie sind (1.) die Produktion der Zeitschrift (Artikel, Autoren), (2.) der Inhalt (Themen) (3.) die Rezeption (Leser), (4.) die formale Fachkommunikation (Referenzen, Zitationen) sowie (5.) die Redaktion (Redaktionspolitik, Verlag). Die Zeitschrift "BuB - Forum für Bibliothek und Information" (BuB) wird einer szientometrischen Analyse unterzogen. BuB ist die auflagenstärkste deutschsprachige Zeitschrift des Bibliotheks- und Informationswesens. Innerhalb des Beobachtungszeitraums von 1990 bis 2003 sind 4.297 Beiträge mit insgesamt 6.803 Referenzen intellektuell ausgewertet worden. Im Vergleich zu erwarteten informetrischen Regelmäßigkeiten zeigt BuB bemerkenswerte Besonderheiten: Nicht ein Top-Autor, sondern eine über Jahre hinweg recht homogene Gruppe von Verfassern dominiert die Literaturproduktion bei BuB. Bei den Referenzen zeigt sich eine sehr hohe Konzentration auf die eigene Zeitschrift. BuB gleicht einer Insel, an die nur wenige fremde Informationen angespült werden. Obwohl Männer und Frauen jeweils 50 Prozent der Beiträge erarbeiten, so gibt es doch sowohl Männerdomänen (vor allem Rezensionen, aber auch Aufsätze) als auch Frauendomänen (Kurzbeiträge und Tagungsberichte). Die Halbwertszeit der Referenzen ist mit 2,7 Jahre sehr niedrig, Halbwertszeiten zitierter Monographien sind dabei höher als die der zitierten Zeitschriftenartikel.
  10. Stock, W.G.: Publikation und Zitat : Die problematische Basis empirischer Wissenschaftsforschung (2001) 0.01 
    0.009092158 = product of:
  0.027276471 = sum of:
    0.018514499 = weight(_text_:internet in 5787) [ClassicSimilarity], result of:
      0.018514499 = score(doc=5787,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.16308975 = fieldWeight in 5787, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.0390625 = fieldNorm(doc=5787)
    0.008761973 = product of:
      0.026285918 = sum of:
        0.026285918 = weight(_text_:29 in 5787) [ClassicSimilarity], result of:
          0.026285918 = score(doc=5787,freq=2.0), product of:
            0.13526669 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.038453303 = queryNorm
            0.19432661 = fieldWeight in 5787, 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=5787)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Abstract
    Die empirische Wissenschaftsforschung arbeitet bei den Indikatoren wissenschaftlicher Leistung und wissenschaftlicher Wirkung mit Publikations- und Zitationsraten. Die vorliegende Arbeit befaßt sich mit dabei auftretenden methodischen Problemen. Was ist überhaupt eine Publikation? Was heißt Zitation? Zentral ist auch die Zählbasis, d.h. die Einheitenbildung: Was ist 1 Publikation? und: Was ist 1 Zitation? Bei Printpublikationen gibt es eine Reihe von beachtenswerten Faktoren (u.a. Mehrautorenwerke, Gewichtungsfaktoren wie den Impact Factor, Dokumenttypen). Bei elektronischen Publikationen im Internet mit ihrem dynamischen Charakter ist die Einheitenbildung noch weitaus problematischer. Zitationen, verstanden als zitierte Publikationen, werfen alle methodischen Probleme der Publikationseinheiten auf, hinzu kommen weitere, spezifische Probleme. Lösungsmöglichkeiten im syntaktischen Bereich (Relativierung auf Textseiten oder Zeichen) ändern am grundlegenden Problem nur wenig, Lösungsversuche im semantischen Bereich (etwa im Rahmen der semantischen Informationstheorie) sind im Rahmen der Publikations- und Zitationsanalysen nicht durchführbar und verweisen sowohl auf themenanalytische Methoden als auch auf die Wissenschaftstheorie. Mit diesem Working Paper wollen wir vor allem auf offene Probleme hinweisen; "endgültige" Lösungen wird der Leser nicht finden, wohl aber Lösungsvorschläge, die meist durchaus noch diskussionswürdig sind. In der Informationswissenschaft wie in der Wissenschaftsforschung sind wir bisher viel zu sicher davon ausgegangen, daß wir wissen, was Publikationen und Zitationen sind
    Series
    Kölner Arbeitspapiere zur Bibliotheks- und Informationswissenschaft; Bd.29
  11. Raan, A.F.J. van; Noyons, E.C.M.: Discovery of patterns of scientific and technological development and knowledge transfer (2002) 0.01 
    0.009092158 = product of:
  0.027276471 = sum of:
    0.018514499 = weight(_text_:internet in 3603) [ClassicSimilarity], result of:
      0.018514499 = score(doc=3603,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.16308975 = fieldWeight in 3603, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3603)
    0.008761973 = product of:
      0.026285918 = sum of:
        0.026285918 = weight(_text_:29 in 3603) [ClassicSimilarity], result of:
          0.026285918 = score(doc=3603,freq=2.0), product of:
            0.13526669 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.038453303 = queryNorm
            0.19432661 = fieldWeight in 3603, 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=3603)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Source
    Gaining insight from research information (CRIS2002): Proceedings of the 6th International Conference an Current Research Information Systems, University of Kassel, August 29 - 31, 2002. Eds: W. Adamczak u. A. Nase
    Theme
    Internet
  12. Bar-Ilan, J.; Peritz, B.C.: Informetric theories and methods for exploring the Internet : an analytical survey of recent research literature (2002) 0.01 
    0.009070214 = product of:
  0.054421283 = sum of:
    0.054421283 = weight(_text_:internet in 813) [ClassicSimilarity], result of:
      0.054421283 = score(doc=813,freq=12.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.47938398 = fieldWeight in 813, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.046875 = fieldNorm(doc=813)
  0.16666667 = coord(1/6)
    Abstract
    The Internet, and more specifically the World Wide Web, is quickly becoming one of our main information sources. Systematic evaluation and analysis can help us understand how this medium works, grows, and changes, and how it influences our lives and research. New approaches in informetrics can provide an appropriate means towards achieving the above goals, and towards establishing a sound theory. This paper presents a selective review of research based on the Internet, using bibliometric and informetric methods and tools. Some of these studies clearly show the applicability of bibliometric laws to the Internet, while others establish new definitions and methods based on the respective definitions for printed sources. Both informetrics and Internet research can gain from these additional methods.
    Theme
    Internet
  13. Cronin, B.: Bibliometrics and beyond : some thoughts on web-based citation analysis (2001) 0.01 
    0.008640099 = product of:
  0.051840592 = sum of:
    0.051840592 = weight(_text_:internet in 3890) [ClassicSimilarity], result of:
      0.051840592 = score(doc=3890,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.45665127 = fieldWeight in 3890, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.109375 = fieldNorm(doc=3890)
  0.16666667 = coord(1/6)
    Theme
    Internet
  14. Barnett, G.A.; Fink, E.L.: Impact of the internet and scholar age distribution on academic citation age (2008) 0.01 
    0.008279935 = product of:
  0.04967961 = sum of:
    0.04967961 = weight(_text_:internet in 1376) [ClassicSimilarity], result of:
      0.04967961 = score(doc=1376,freq=10.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.43761572 = fieldWeight in 1376, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.046875 = fieldNorm(doc=1376)
  0.16666667 = coord(1/6)
    Abstract
    This article examines the impact of the Internet and the age distribution of research scholars on academic citation age with a mathematical model proposed by Barnett, Fink, and Debus (1989) and a revised model that incorporates information about the online environment and scholar age distribution. The modified model fits the data well, accounting for 99.6% of the variance for science citations and 99.8% for social science citations. The Internet's impact on the aging process of academic citations has been very small, accounting for only 0.1% for the social sciences and 0.8% for the sciences. Rather than resulting in the use of more recent citations, the Internet appears to have lengthened the average life of academic citations by 6 to 8 months. The aging of scholars seems to have a greater impact, accounting for 2.8% of the variance for the sciences and 0.9% for the social sciences. However, because the diffusion of the Internet and the aging of the professoriate are correlated over this time period, differentiating their effects is somewhat problematic.
    Theme
    Internet
  15. Burrell, Q.L.: Predicting future citation behavior (2003) 0.01 
    0.008141059 = product of:
  0.048846357 = sum of:
    0.048846357 = product of:
      0.07326953 = sum of:
        0.036800284 = weight(_text_:29 in 3837) [ClassicSimilarity], result of:
          0.036800284 = score(doc=3837,freq=2.0), product of:
            0.13526669 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.038453303 = queryNorm
            0.27205724 = fieldWeight in 3837, 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=3837)
        0.036469243 = weight(_text_:22 in 3837) [ClassicSimilarity], result of:
          0.036469243 = score(doc=3837,freq=2.0), product of:
            0.13465692 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.038453303 = 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)
      0.6666667 = coord(2/3)
  0.16666667 = coord(1/6)
    Date
    29. 3.2003 19:22:48
  16. Kuperman, V.: Productivity in the Internet mailing lists : a bibliometric analysis (2006) 0.01 
    0.0075585125 = product of:
  0.045351073 = sum of:
    0.045351073 = weight(_text_:internet in 4907) [ClassicSimilarity], result of:
      0.045351073 = score(doc=4907,freq=12.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.39948666 = fieldWeight in 4907, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4907)
  0.16666667 = coord(1/6)
    Abstract
    The author examines patterns of productivity in the Internet mailing lists, also known as discussion lists or discussion groups. Datasets have been collected from electronic archives of two Internet mailing lists, the LINGUIST and the History of the English Language. Theoretical models widely used in informetric research have been applied to fit the distribution of posted messages over the population of authors. The Generalized Inverse Poisson-Gaussian and Poisson-lognormal distributions show excellent results in both datasets, while Lotka and Yule-Simon distribution demonstrate poor-to-mediocre fits. In the mailing list where moderation and quality control are enforced to a higher degree, i.e., the LINGUIST, Lotka, and Yule-Simon distributions perform better. The findings can be plausibly explained by the lesser applicability of the success-breedssuccess model to the information production in the electronic communication media, such as Internet mailing lists, where selectivity of publications is marginal or nonexistent. The hypothesis is preliminary, and needs to be validated against the larger variety of datasets. Characteristics of the quality control, competitiveness, and the reward structure in Internet mailing lists as compared to professional scholarly journals are discussed.
    Theme
    Internet
  17. Ball, R.; Tunger, D.: Bibliometrische Analysen - Daten, Fakten und Methoden : Grundwissen Bibliometrie für Wissenschaftler, Wissenschaftsmanager, Forschungseinrichtungen und Hochschulen (2005) 0.01 
    0.007161058 = product of:
  0.042966347 = sum of:
    0.042966347 = weight(_text_:bibliothek in 4992) [ClassicSimilarity], result of:
      0.042966347 = score(doc=4992,freq=2.0), product of:
        0.1578712 = queryWeight, product of:
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.038453303 = queryNorm
        0.27216077 = fieldWeight in 4992, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.046875 = fieldNorm(doc=4992)
  0.16666667 = coord(1/6)
    Series
    Schriften des Forschungszentrums Jülich. Reihe Bibliothek/Library; 12
  18. Haycock, L.A.: Citation analysis of education dissertations for collection development (2004) 0.01 
    0.00697805 = product of:
  0.0418683 = sum of:
    0.0418683 = product of:
      0.06280245 = sum of:
        0.0315431 = weight(_text_:29 in 135) [ClassicSimilarity], result of:
          0.0315431 = score(doc=135,freq=2.0), product of:
            0.13526669 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.038453303 = queryNorm
            0.23319192 = fieldWeight in 135, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.046875 = fieldNorm(doc=135)
        0.03125935 = weight(_text_:22 in 135) [ClassicSimilarity], result of:
          0.03125935 = score(doc=135,freq=2.0), product of:
            0.13465692 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.038453303 = 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)
      0.6666667 = coord(2/3)
  0.16666667 = coord(1/6)
    Date
    10. 9.2000 17:38:22
    17.12.2006 19:44:29
  19. Stock, W.G.: Journal Citation Reports : Ein Impact Factor für Bibliotheken, Verlage und Autoren? (2001) 0.01 
    0.005967549 = product of:
  0.035805292 = sum of:
    0.035805292 = weight(_text_:bibliothek in 5915) [ClassicSimilarity], result of:
      0.035805292 = score(doc=5915,freq=2.0), product of:
        0.1578712 = queryWeight, product of:
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.038453303 = queryNorm
        0.22680065 = fieldWeight in 5915, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.0390625 = fieldNorm(doc=5915)
  0.16666667 = coord(1/6)
    Abstract
    Gibt es objektive Kriterien für die Bestellung und Abbestellung wissenschaftlicher Zeitschriften? Wie lange sollte eine Bibliothek Periodikabestände benutzernah aufstellen? Kann ein Verlag -außer via Verkaufszahlen - auf Kriterien des Erfolgs seiner Zeitschriften zurückgreifen? Hat ein Autor eine Entscheidungsgrundlage, welcher Zeitschrift er seinen Artikel anbietet? Ist die Forschungsaktivität eines Instituts oder eines Wissenschaftlers über den Impact derjenigen Zeitschriftentitel zu evaluieren, die die Forschungsergebnisse drucken? Können die 'Journal Citation Reports (JCR) "des "Institute for Scientific Information" bei der Klärung solcher Fragen helfen? Sind die JCR ein nützliches oder gar ein notwendiges Hilfsmittel für Bibliotheken, für Verlage, für Wissenschaftsmanager und für wissenschaftliche Autoren? Die 'Journal Citation Reports" geben im Jahresrhythmus informetrische Kennzahlen wie die Zitationsrate, den Impact Factor, den Immediacy Index, die Halbwertszeit für eine Auswahl wissenschaftlicher Zeitschriften an. Zusätzlich berichten sie darüber, weiche Zeitschriften weiche anderen Zeitschriften zitieren bzw. von diesen zitiert werden, so dass "Soziogramme" wissenschaftlicher Zeitschriftenkommunikation entstehen. Wir wollen am Beispiel des aktuellen Jahrgangs ( 1999) die JCR detailliert beschreiben, die Auswahlkriterien der Zeitschriften beleuchten, die verwendeten informetrischen Kennwerte - vor allem den Impact Factor - kritisch hinterfragen, um danach die Einsatzgebiete bei Bibliotheken, in der Wissenschaftsevaluation, bei Verlagen und bei Autoren zu diskutieren. Das Fazit sei vorweggenommen: Die JCR sind ein nicht umgehbares Hilfsmittel für die fokussierten Anwendungsbereiche. Sie sind mitnichten frei von Problemen. Wir schließen daher mit einigen Verbesserungsvorschlägen
  20. Oberhauser, O.: Fachspezifische Suche nach elektronischen Zeitschriften : Ein webliographischer Streifzug am Beispiel der Informationswissenschaft (2003) 0.01 
    0.005967549 = product of:
  0.035805292 = sum of:
    0.035805292 = weight(_text_:bibliothek in 1480) [ClassicSimilarity], result of:
      0.035805292 = score(doc=1480,freq=2.0), product of:
        0.1578712 = queryWeight, product of:
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.038453303 = queryNorm
        0.22680065 = fieldWeight in 1480, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1480)
  0.16666667 = coord(1/6)
    Abstract
    Ziel dieses Beitrags ist es, am Beispiel unserer eigenen Disziplin Möglichkeiten zur Recherche nach elektronischen Zeitschriften (EJournals) vorzustellen und zu bewerten. Vorweg drei definitorische Festlegungen: EJournals meint hier via WWW verfügbare Zeitschriften (gleichgültig ob parallel zu einer gedruckten Ausgabe oder ausschliesslich elektronisch, ob zur Gänze oder nur teilweise online). Informationswissenschaft (IW) steht hier für den gesamten Bereich der Bibliotheks-, Informations- und Dokumentationswissenschaft und -praxis (ohne Archiv- und Museumswesen). Webliographisch bedeutet, dass sich die Betrachtung auf Informationssammlungen und Nachweise im WWW beschränkt. Bei den (frei verfügbaren) Webliographien zu EJournals handelt es sich in der Regel um Datenbanken, Verzeichnisse und Linksammlungen. Es mag vielleicht überraschen, dass für das gewählte Fachgebiet eine nahezu unüberschaubare Zahl solcher Nachweise existiert. Zwar scheint dies noch nicht zur Herausbildung von "Webliographien der Webliographien" geführt zu haben, die auf Nachweise von ausschliesslich informationswissenschaftlichen EJournals spezialisiert wären, doch in den diversen fachspezifischen Linksammlungen und Verzeichnissen werden die Sekundärpublikationen, meist in die Auflistung der Primärpublikationen gemischt, durchaus verzeichnet. Fachübergreifend existieren Kompilationen von Verzeichnissen elektronischer Zeitschriften sehr wohl. Als deutsches Beispiel kann der Abschnitt "Elektronische Zeitschriften" der Düsseldorfer Virtuellen Bibliothek angeführt werden, wo Ressourcen und Verzeichnisse/ Datenbanken elektronischer Zeitschriften vorgestellt werden; ein internationales Beispiel ist die auf dem Server der University of Vermont gewartete umfangreiche Zusammenstellung Serials in Cyberspace.

Authors

Languages

  • e 107
  • d 18
  • f 1
  • More… Less…

Types

  • a 120
  • r 3
  • el 2
  • m 2
  • x 1
  • More… Less…

Themes

Classifications