Search (10 results, page 1 of 1)

0.050860167 = product of:
  0.10172033 = sum of:
    0.10172033 = product of:
      0.20344067 = sum of:
        0.20344067 = weight(_text_:2001 in 1774) [ClassicSimilarity], result of:
          0.20344067 = score(doc=1774,freq=5.0), product of:
            0.19400154 = queryWeight, product of:
              4.2877507 = idf(docFreq=1650, maxDocs=44218)
              0.04524553 = queryNorm
            1.0486549 = fieldWeight in 1774, product of:
              2.236068 = tf(freq=5.0), with freq of:
                5.0 = termFreq=5.0
              4.2877507 = idf(docFreq=1650, maxDocs=44218)
              0.109375 = fieldNorm(doc=1774)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Source

Information processing and management. 37(2001) no.6, S.843-857

Year

2001

0.043594427 = product of:
  0.087188855 = sum of:
    0.087188855 = product of:
      0.17437771 = sum of:
        0.17437771 = weight(_text_:2001 in 6949) [ClassicSimilarity], result of:
          0.17437771 = score(doc=6949,freq=5.0), product of:
            0.19400154 = queryWeight, product of:
              4.2877507 = idf(docFreq=1650, maxDocs=44218)
              0.04524553 = queryNorm
            0.89884704 = fieldWeight in 6949, product of:
              2.236068 = tf(freq=5.0), with freq of:
                5.0 = termFreq=5.0
              4.2877507 = idf(docFreq=1650, maxDocs=44218)
              0.09375 = fieldNorm(doc=6949)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Source

Journal of the American Society for Information Science and technology. 52(2001) no.12, S.1073-1074

Year

2001

0.03632869 = product of:
  0.07265738 = sum of:
    0.07265738 = product of:
      0.14531475 = sum of:
        0.14531475 = weight(_text_:2001 in 1225) [ClassicSimilarity], result of:
          0.14531475 = score(doc=1225,freq=5.0), product of:
            0.19400154 = queryWeight, product of:
              4.2877507 = idf(docFreq=1650, maxDocs=44218)
              0.04524553 = queryNorm
            0.7490392 = fieldWeight in 1225, product of:
              2.236068 = tf(freq=5.0), with freq of:
                5.0 = termFreq=5.0
              4.2877507 = idf(docFreq=1650, maxDocs=44218)
              0.078125 = fieldNorm(doc=1225)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Footnote

Zugl. Dissertation Univ. Wuppertal, 2001 u.d.T.: Aufbau und Nutzung von Internet-Sites: ein Web-Experiment zum Einfluß der Linkstruktur einer Website auf die Effizienz der Informationssuche und Flow

Year

2001

0.025430083 = product of:
  0.050860167 = sum of:
    0.050860167 = product of:
      0.10172033 = sum of:
        0.10172033 = weight(_text_:2001 in 2277) [ClassicSimilarity], result of:
          0.10172033 = score(doc=2277,freq=5.0), product of:
            0.19400154 = queryWeight, product of:
              4.2877507 = idf(docFreq=1650, maxDocs=44218)
              0.04524553 = queryNorm
            0.52432746 = fieldWeight in 2277, product of:
              2.236068 = tf(freq=5.0), with freq of:
                5.0 = termFreq=5.0
              4.2877507 = idf(docFreq=1650, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2277)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Source

Library and information science research. 23(2001) no.2, S.167-185

Year

2001

0.018164344 = product of:
  0.03632869 = sum of:
    0.03632869 = product of:
      0.07265738 = sum of:
        0.07265738 = weight(_text_:2001 in 5584) [ClassicSimilarity], result of:
          0.07265738 = score(doc=5584,freq=5.0), product of:
            0.19400154 = queryWeight, product of:
              4.2877507 = idf(docFreq=1650, maxDocs=44218)
              0.04524553 = queryNorm
            0.3745196 = fieldWeight in 5584, product of:
              2.236068 = tf(freq=5.0), with freq of:
                5.0 = termFreq=5.0
              4.2877507 = idf(docFreq=1650, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5584)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Source

Journal of the American Society for Information Science and technology. 52(2001) no.2, S.137-148

Year

2001

0.017193874 = product of:
  0.03438775 = sum of:
    0.03438775 = product of:
      0.0687755 = sum of:
        0.0687755 = weight(_text_:2001 in 6980) [ClassicSimilarity], result of:
          0.0687755 = score(doc=6980,freq=7.0), product of:
            0.19400154 = queryWeight, product of:
              4.2877507 = idf(docFreq=1650, maxDocs=44218)
              0.04524553 = queryNorm
            0.35451007 = fieldWeight in 6980, product of:
              2.6457512 = tf(freq=7.0), with freq of:
                7.0 = termFreq=7.0
              4.2877507 = idf(docFreq=1650, maxDocs=44218)
              0.03125 = fieldNorm(doc=6980)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Abstract

In previous articles, we reported the state of Web searching in 1997 (Jansen, Spink, & Saracevic, 2000) and in 1999 (Spink, Wolfram, Jansen, & Saracevic, 2001). Such snapshot studies and statistics on Web use appear regularly (OCLC, 1999), but provide little information about Web searching trends. In this article, we compare and contrast results from our two previous studies of Excite queries' data sets, each containing over 1 million queries submitted by over 200,000 Excite users collected on 16 September 1997 and 20 December 1999. We examine how public Web searching changing during that 2-year time period. As Table 1 shows, the overall structure of Web queries in some areas did not change, while in others we see change from 1997 to 1999. Our comparison shows how Web searching changed incrementally and also dramatically. We see some moves toward greater simplicity, including shorter queries (i.e., fewer terms) and shorter sessions (i.e., fewer queries per user), with little modification (addition or deletion) of terms in subsequent queries. The trend toward shorter queries suggests that Web information content should target specific terms in order to reach Web users. Another trend was to view fewer pages of results per query. Most Excite users examined only one page of results per query, since an Excite results page contains ten ranked Web sites. Were users satisfied with the results and did not need to view more pages? It appears that the public continues to have a low tolerance of wading through retrieved sites. This decline in interactivity levels is a disturbing finding for the future of Web searching. Queries that included Boolean operators were in the minority, but the percentage increased between the two time periods. Most Boolean use involved the AND operator with many mistakes. The use of relevance feedback almost doubled from 1997 to 1999, but overall use was still small. An unusually large number of terms were used with low frequency, such as personal names, spelling errors, non-English words, and Web-specific terms, such as URLs. Web query vocabulary contains more words than found in large English texts in general. The public language of Web queries has its own and unique characteristics. How did Web searching topics change from 1997 to 1999? We classified a random sample of 2,414 queries from 1997 and 2,539 queries from 1999 into 11 categories (Table 2). From 1997 to 1999, Web searching shifted from entertainment, recreation and sex, and pornography, preferences to e-commerce-related topics under commerce, travel, employment, and economy. This shift coincided with changes in information distribution on the publicly indexed Web.

Source

Journal of the American Society for Information Science and technology. 52(2001) no.3, S.226-234

Year

2001

0.009195216 = product of:
  0.018390432 = sum of:
    0.018390432 = product of:
      0.036780864 = sum of:
        0.036780864 = weight(_text_:22 in 177) [ClassicSimilarity], result of:
          0.036780864 = score(doc=177,freq=2.0), product of:
            0.15844212 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04524553 = queryNorm
            0.23214069 = fieldWeight in 177, 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=177)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Abstract

This study investigated Simon's behavioral decisionmaking theories of bounded rationality and satisficing in relation to young people's decision making in the World Wide Web, and considered the role of personal preferences in Web-based decisions. It employed a qualitative research methodology involving group interviews with 22 adolescent females. Data analysis took the form of iterative pattern coding using QSR NUD*IST Vivo qualitative data analysis software. Data analysis revealed that the study participants did operate within the limits of bounded rationality. These limits took the form of time constraints, information overload, and physical constraints. Data analysis also uncovered two major satisficing behaviors-reduction and termination. Personal preference was found to play a major role in Web site evaluation in the areas of graphic/multimedia and subject content preferences. This study has related implications for Web site designers and for adult intermediaries who work with young people and the Web

0.009195216 = product of:
  0.018390432 = sum of:
    0.018390432 = product of:
      0.036780864 = sum of:
        0.036780864 = weight(_text_:22 in 1540) [ClassicSimilarity], result of:
          0.036780864 = score(doc=1540,freq=2.0), product of:
            0.15844212 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04524553 = queryNorm
            0.23214069 = fieldWeight in 1540, 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=1540)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date

18.11.2014 13:22:03

0.006130144 = product of:
  0.012260288 = sum of:
    0.012260288 = product of:
      0.024520576 = sum of:
        0.024520576 = weight(_text_:22 in 4440) [ClassicSimilarity], result of:
          0.024520576 = score(doc=4440,freq=2.0), product of:
            0.15844212 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04524553 = queryNorm
            0.15476047 = fieldWeight in 4440, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03125 = fieldNorm(doc=4440)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date

20. 1.2015 18:30:22

0.0045952564 = product of:
  0.009190513 = sum of:
    0.009190513 = product of:
      0.018381026 = sum of:
        0.018381026 = weight(_text_:2001 in 3341) [ClassicSimilarity], result of:
          0.018381026 = score(doc=3341,freq=2.0), product of:
            0.19400154 = queryWeight, product of:
              4.2877507 = idf(docFreq=1650, maxDocs=44218)
              0.04524553 = queryNorm
            0.0947468 = fieldWeight in 3341, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.2877507 = idf(docFreq=1650, maxDocs=44218)
              0.015625 = fieldNorm(doc=3341)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Content

Beobachtungen und Befragungen Da kommen die beiden vorliegenden Studien gerade recht, untersuchen sie doch mit qualitativen Methoden, mit Befragungen und teilnehmenden Beobachtungen, wie Kinder das Internet entdecken beziehungsweise nutzen, welche Kompetenzen sie haben und entwickeln, welche Erwartungen, Interessen und Präferenzen sie für das Netz haben, wie und welche Orientierungen und Suchstrategien sie entfalten und schließlich wodurch und wie sie sich von den Web-Sites ansprechen lassen. Das wird jeweils an einzelnen Beispielen und Szenen anschaulich beschrieben, teils wörtlich dokumentiert, sodass man plastische Eindrücke bekommt, wie Kinder an das Web herangehen, wie sie sich zurechtfinden und was sie darüber denken und wissen. Die eine Studie (Christine Feil et al. 2004) wurde zwischen 2001 und 2003 am Deutschen Jugendinstitut (DJI) München mit Unterstützung des Bundesministeriums für Bildung und Forschung durchgeführt; an ihr sind mehrere ForscherInnen beteiligt gewesen. Entsprechend komplexer und differenzierter sind ihre Erhebungsmethoden, entsprechend aufwendiger ist ihr Forschungsdesign, und entsprechend umfassender und dichter sind ihre Ergebnisse. Teilgenommen an der Studie haben elf Mädchen und sieben Jungen zwischen fünf und elf Jahren; sie wurden in zwei bis drei mindestens einstündigen Beobachtungsphasen in ihrem Umgang mit PC und Internet per Video beobachtet, zweimal befragt wurden die Eltern und die Erzieherinnen der Horte, in die die Kinder gehen. Die andere (Susanne Richter 2004) ist eine literaturdidaktische Dissertation an der Universität Lüneburg, deren empirischer Teil schon 1999, also drei Jahre früher als die DJI-Studie, durchgeführt wurde. Beteiligt waren 25 Schüler, darunter nur sechs Mädchen, zwischen zehn und 13 Jahren, die von der Autorin nach ihrer PC-Nutzung befragt und während einer halbstündigen »Surfphase« über vier ausgewählte Web-Sites beobachtet wurden. Mithin sind die Populationen allenfalls für die neun 10- bis 11-Jährigen der DJI-Studie vergleichbar, die andere Hälfte ist jünger.