Search (152 results, page 1 of 8)

  • × theme_ss:"Benutzerstudien"
  1. Holler, U.: Benutzerfreundlichkeit von Sachkatalogen (1975) 0.05 
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  2. Spinas, P.: Benutzerfreundlichkeit von ETHICS : Ergebnisse einer Untersuchung des Online-Kataloges der ETH-Bibliothek (1992) 0.04 
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  3. Kluck, M.: ¬Die Informationsanalyse im Online-Zeitalter : Befunde der Benutzerforschung zum Informationsverhalten im Internet (2004) 0.01 
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    Abstract
    Die Notwendigkeit des professionellen Einsatzes von empirischen Methoden als Grundvoraussetzung für den Entwurf und die Gestaltung von Informationsdiensten, Informationsprodukten und Informationssystemen ist seit den frühen sechzigerfahren in der Informationsarbeit erkannt worden. Anfänglich wurde - ausgedrückt durch die Bezeichnung "Benutzerforschung" oder "fachliche Rezipientenforschung" -versucht, den Informationsbedarfvon unterschiedlichen Benutzergruppen (im Rahmen einer Typologie der Benutzer von Informationssystemen) zu messen und aufgrund dieser Daten zu Einschätzungen von Art, Menge, Umfang und Tiefe von Informationsbedürfnissen zu gelangen. "Benutzerforschung sollte den Lebensweg von Informationsprodukten beziehungsweise Informationsdiensten begleiten. Sie kann erste Anregungen geben, sie liefert Entscheidungshilfen im Planungsstadium und kontrolliert dann, ob, wo und wie sich der geplante Erfolg tatsächlich eingestellt hat." In den siebziger und achtziger Jahren traten dann Fragestellungen in den Vordergrund, die den allgemeinen Nutzen der Information und besonders der Strukturen und Prozesse der Informationsvermittlung empirisch zu beschreiben versuchten. Darüber hinaus wurden mit dem in den siebziger Jahren dann vollzogenen Einsatz der Informationsund Kommunikationstechnologien in den Bibliotheken und Informationsstellen Fragestellungen wichtig, die unter dem Begriff "Kommunikationsanalysen" etwa die Ansätze der Informationsbedarfsmessung mit der empirischen Analyse des Einsatzes von Informations- und Kommunikationstechnologien verbanden. Ein weiteres Einsatzfeld empirischer Untersuchungen ergab sich aus dem langsamen Entstehen eines Marktes für elektronische Informationsprodukte, wodurch sowohl empirische Marktforschungsstrategien als auch empirische Marketingansätze in die Informationsarbeit hineingetragen wurden. Schließlich traten Untersuchungen der Benutzerfreundlichkeit von Informationssystemen und ihrer Bedienbarkeit sowie dann die allgemeinen Kriterien der Softwareergonomie hinzu. Ferner werden seit den 90er Jahren durch die Nutzung des Internets als Angebotsmedium Aspekte der Kundenorientierung und Fragen der empirischen Nutzungsforschung und der Bedienungsfreundlichkeit (Usability) zunehmend wichtiger. Dementsprechend haben sich auch die Begrifflichkeiten für die Benutzerforschung in Bibliotheken gewandelt: Von Benutzung, Benutzerbedürfnisse, Benutzerforschung, Benutzerfreundlichkeit über Benutzerorientierung, Benutzerzufriedenheit, Benchmarking, Qualitätsmanagement, Bibliotheksmarketing hin zu Kundenorientierung, Kundenzufriedenheit, Service. Hinsichtlich der Internet-Angebote kamen dann Aspekte des Benutzerverhaltens und der Bedienungsfreundlichkeit der Software bzw der Benutzerschnittstellen hinzu. Allen Konzepten ist gemeinsam, dass sie im weitesten Sinne den Prozess der gesellschaftlichen Informationsvermittlung auf einer übergreifenden Ebene verstehbar machen: Aus der Sicht des Nutzers von Information, aus der Sicht manifester und latenter Informationsbedürfnisse, aus der Sicht technisch unterstützter fachlicher Informationsund Kommunikationsprozesse der Information und Dokumentation oder aus der Sicht technischer und ästhetischer Gestaltung. Diese hier grob unterschiedenen Ansätze werden nun unter dem Begriff Informationsanalyse zusammengefasst.
  4. Yoo, E.-Y.; Robbins, L.S.: Understanding middle-aged women's health information seeking on the web : a theoretical approach (2008) 0.01 
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    Date
    9. 2.2008 17:52:22
  5. Schneider, R.: OPACs, Benutzer und das Web (2009) 0.01 
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    Abstract
    Der Artikel betrachtet anhand einer Studie zum Benutzerverhalten bei der Online-Katalogrecherche den gegenwärtigen Stellenwert und das zukünftige Potential der Web-OPACs. Dabei werden zunächst die Ergebnisse einer quantitativen Logfile-Analyse sowie qualitativer Benutzertests erörtert, bevor aktuelle Entwicklungen der Webtechnologie, die unter den Schlagworten Web 2.0 und Web 3.0 propagiert werden, im Zusammenhang mit der Online-Recherche und der Entwicklung neuartiger Suchverfahren kurz diskutiert werden.
    Date
    22. 2.2009 18:50:43
  6. Agosto, D.E.: Bounded rationality and satisficing in young people's Web-based decision making (2002) 0.01 
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    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
  7. Large, A.; Beheshti, J.; Rahman, T.: Design criteria for children's Web portals : the users speak out (2002) 0.01 
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    Abstract
    Four focus groups were held with young Web users (10 to 13 years of age) to explore design criteria for Web portals. The focus group participants commented upon four existing portals designed with young users in mind: Ask Jeeves for Kids, KidsClick, Lycos Zone, and Yahooligans! This article reports their first impressions on using these portals, their likes and dislikes, and their suggestions for improvements. Design criteria for children's Web portals are elaborated based upon these comments under four headings: portal goals, visual design, information architecture, and personalization. An ideal portal should cater for both educational and entertainment needs, use attractive screen designs based especially on effective use of color, graphics, and animation, provide both keyword search facilities and browsable subject categories, and allow individual user personalization in areas such as color and graphics
    Date
    2. 6.2005 10:34:22
  8. Aula, A.; Nordhausen, K.: Modeling successful performance in Web searching (2006) 0.01 
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    Abstract
    Several previous studies have measured differences in the information search success of novices and experts. However, the definitions of novices and experts have varied greatly between the studies, and so have the measures used for search success. Instead of dividing the searchers into different groups based on their expertise, we chose to model search success with task completion speed, TCS. Towards this goal, 22 participants performed three fact-finding tasks and two broader tasks in an observational user study. In our model, there were two variables related to the Web experience of the participants. Other variables included, for example, the speed of query iteration, the length of the queries, the proportion of precise queries, and the speed of evaluating result documents. Our results showed that the variables related to Web experience had expected effects on TCS. The increase in the years of Web use was related to improvement in TCS in the broader tasks, whereas the less frequent Web use was related to a decrease in TCS in the fact-finding tasks. Other variables having significant effects on TCS in either of the task types were the speed of composing queries, the average number of query terms per query, the proportion of precise queries, and the participants' own evaluation of their search skills. In addition to the statistical models, we present several qualitative findings of the participants' search strategies. These results give valuable insight into the successful strategies in Web search beyond the previous knowledge of the expert-novice differences.
  9. Kim, J.: Describing and predicting information-seeking behavior on the Web (2009) 0.01 
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    Abstract
    This study focuses on the task as a fundamental factor in the context of information seeking. The purpose of the study is to characterize kinds of tasks and to examine how different kinds of task give rise to different kinds of information-seeking behavior on the Web. For this, a model for information-seeking behavior was used employing dimensions of information-seeking strategies (ISS), which are based on several behavioral dimensions. The analysis of strategies was based on data collected through an experiment designed to observe users' behaviors. Three tasks were assigned to 30 graduate students and data were collected using questionnaires, search logs, and interviews. The qualitative and quantitative analysis of the data identified 14 distinct information-seeking strategies. The analysis showed significant differences in the frequencies and patterns of ISS employed between three tasks. The results of the study are intended to facilitate the development of task-based information-seeking models and to further suggest Web information system designs that support the user's diverse tasks.
    Date
    22. 3.2009 18:54:15
  10. Bilal, D.: Children's use of the Yahooligans! Web search engine : III. Cognitive and physical behaviors on fully self-generated search tasks (2002) 0.00 
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    Abstract
    Bilal, in this third part of her Yahooligans! study looks at children's performance with self-generated search tasks, as compared to previously assigned search tasks looking for differences in success, cognitive behavior, physical behavior, and task preference. Lotus ScreenCam was used to record interactions and post search interviews to record impressions. The subjects, the same 22 seventh grade children in the previous studies, generated topics of interest that were mediated with the researcher into more specific topics where necessary. Fifteen usable sessions form the basis of the study. Eleven children were successful in finding information, a rate of 73% compared to 69% in assigned research questions, and 50% in assigned fact-finding questions. Eighty-seven percent began using one or two keyword searches. Spelling was a problem. Successful children made fewer keyword searches and the number of search moves averaged 5.5 as compared to 2.4 on the research oriented task and 3.49 on the factual. Backtracking and looping were common. The self-generated task was preferred by 47% of the subjects.
  11. Su, L.T.: ¬A comprehensive and systematic model of user evaluation of Web search engines : Il. An evaluation by undergraduates (2003) 0.00 
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    Abstract
    This paper presents an application of the model described in Part I to the evaluation of Web search engines by undergraduates. The study observed how 36 undergraduate used four major search engines to find information for their own individual problems and how they evaluated these engines based an actual interaction with the search engines. User evaluation was based an 16 performance measures representing five evaluation criteria: relevance, efficiency, utility, user satisfaction, and connectivity. Non-performance (user-related) measures were also applied. Each participant searched his/ her own topic an all four engines and provided satisfaction ratings for system features and interaction and reasons for satisfaction. Each also made relevance judgements of retrieved items in relation to his/her own information need and participated in post-search Interviews to provide reactions to the search results and overall performance. The study found significant differences in precision PR1 relative recall, user satisfaction with output display, time saving, value of search results, and overall performance among the four engines and also significant engine by discipline interactions an all these measures. In addition, the study found significant differences in user satisfaction with response time among four engines, and significant engine by discipline interaction in user satisfaction with search interface. None of the four search engines dominated in every aspect of the multidimensional evaluation. Content analysis of verbal data identified a number of user criteria and users evaluative comments based an these criteria. Results from both quantitative analysis and content analysis provide insight for system design and development, and useful feedback an strengths and weaknesses of search engines for system improvement
    Date
    24. 1.2004 18:27:22
  12. Kübler, H.-D.: Aufwachsen mit dem Web : Surfen eher selten: zwei Studien zur Internetnutzung von Kindern (2005) 0.00 
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    Content
    "Als Generation @ werden Kinder und Jugendliche in der Öffentlichkeit bereits gefeiert, insbesondere Marketing und Werbung schwärmen vom geschickten, unermüdlichen Surfen im WWW, von kinderleichter Handhabung des Equipments, spielerischem Edutainment und spannenden Verlockungen des digitalen Lernens, und zwar schon für die Kleinsten ab dem Kindergartenalter. Mehrheit noch offline Imposant sind auch die quantitativen Daten zur Haushaltsausstattung und PC- beziehungsweise Internetnutzung, vor allem ihre Wachstumsraten, die die Studie von Christine Feil und Co-Autoren referiert und miteinander abgleicht. Susanne Richter (S. 18) hingegen weiß nichts von ihrer Existenz, zumal Angaben aus kommerziellen Kontexten meist zu Obertreibungen neigen. Seriöser sind die Angaben des so genannten Medienpädagogischen Forschungsverbundes Südwest, der seit 1999 die Studie »Kinder und Medien« (»KIM-Studie«) durchführt, 2003 zum vierten Mal. Danach hatten 57 Prozent der bundesdeutschen Haushalte mit 6- bis 13-jährigen Kinder Internet zu Hause (Feil S. 15),42 Prozent der 6-bis 13-Jährigen besuchen hin und wieder das Internet, nur etwa gut zwölf Prozent sind täglich oder mehrmals in der Woche nach Schätzungen durchschnittlich zwischen einer halben und einer Stunde im Netz, werden aber von kommerzieller Seite bereits als »Heavy User« apostrophiert (Feil S. 18). Etwa bei zehn, elf Jahren lag 2003/2004 das Einstiegsalter für das Internet, bei Mädchen und bei Kindern aus niedrigeren Einkommens- und Sozialschichten etwas später. Offenbar haben die inzwischen - auch schon im Primarbereich - gut ausgestatten Schulen noch »kaum kompensatorische Wirkung im Sinne gleicher Zugangschancen für alle Kinder« entfaltet, »sondern allenfalls den Anteil der Kinder mit Sowohl-als-auch-Zugang« erhöht (Feil S. 21). So zeichnen sich tendenziell zwar jeweils steigende Beteiligungen ab, aber »die Mehrheit der Kinder« ist noch »offline«. Und der Zugang der Kinder zum Netz allein »gibt weder Aufschluss über ihre Nutzungskompetenzen noch über die Bedeutung der Kommunikationsund Informationsfunktion des Internets für Kinder« (Feil S. 30), so die sicherlich stimmige Ausgangsthese.
    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.
    Tipps von Freunden Beide Studien beschränken sich nicht nur auf die Darstellung der empirischen Befunde: Außer der Aufbereitung der quantitativen Nutzungsdaten findet sich in der DJI-Studie noch ein informativer Abriss über »neuere Entwicklungen im deutschen Kinderweh«. Darin werden die neuen Kinder- und Jugendschutzregelungen abgehandelt sowie jüngste formale und inhaltliche Entwicklungen der Internetseiten für Kinder skizziert. Damit setzt das DJI seine Bestandsaufnahmen und Sichtungen von Kindersoftware und -selten, die es seit 1999 vornimmt, fort.* In einer Datenbank (unter www. kinderseiten.de) sind sie jeweils aktuell abzurufen. Insgesamt wachse die »Ökonomisierung des Kinderweh«; gerade die für Kindermedien symptomatischen Medienverbundstrategien werden durch das Web enorm verstärkt, wie es umgekehrt von ihnen profitiert, sodass sich Werbung und Inhalt immer intensiver vermischen (und kaum das gesetzliche Gebot nach Trennung einhalten). Nicht-kommerzielle Angebote, die es gleichwohl in Fülle im Netz gibt, haben es gegenüber solch geballter Marktmacht zunehmend schwerer, überhaupt die Aufmerksamkeit der Kinder zu finden, das heißt, überhaupt von ihnen entdeckt zu werden. Denn Kinder diesen Alters, darin stimmen beide Studien überein, surfen im eigentlichen Sinne kaum; sie merken sich die Adressen (URLs) aus Zeitschriften, von Fernsehsendungen oder bekommen sie von Freunden. Nur selten suchen sie welche gezielt mittels Suchmaschinen oder Katalogen; und auch spezielle Kindersuchmaschinen wie die viel gelobte Blinde Kuh (www.blindekuh.de) kommen nur selten in ihr Gesichtsfeld. Auch Richter beginnt - wohl typisch Dissertation - recht allgemein, mit der Darstellung (kontroverser) Medienbegriffe, von Web-Geschichte und -funktionalitäten und gängigen Gestaltungskriterien, was für das eigentliche Thema nicht unbedingt erforderlich ist. Aufschlussreich für den bibliothekarischen Kontext sind hingegen ihre Ausführungen zur Lesekompetenz und ihre Relationen zu speziellen Internetkompetenzen, die die Autorin auch empirisch erhärten kann: Denn Kinder, die flüssig, gut und sicher lesen können, erfassen natürlich nicht nur die Web-Inhalte besser, sie finden sich auch schneller auf den Web-Seiten zurecht und erkennen deren Strukturen (Linkpfade, Navigationsleisten, Buttons und so weiter) leichter und genauer als die Leseschwächeren. Ob man solchen Umgang sogleich als kompetentes Informationsverhalten und Surf-Aktivität werten will oder nicht, ist wohl Definitionssache. Denn auch Richter räumt ein, dass die meisten Kinder vornehmlich über das Internet spielen oder aber ihnen schon bekannte Seiten für ihre Hobbys, über Stars, Musik und Chat aufrufen. Dabei ist ihnen vor allem das Design der Seiten wichtig: Bunt, mit Bildern und Fotos sollen sie gestaltet sein, aber nicht überladen und durch Animationen in ihrer Ladezeit zu langwierig. Fachliches Computerwissen haben die Kinder gemeinhin nicht, nur wenige Freaks brillieren mit nicht immer ganz begriffenem Vokabular; und sie brauchen es auch kaum, denn sie lernen den Internetumgang durch Zugucken und kurze Handling-Tipps von Eltern und älteren Kindern. Eine systematische Internetdidaktik, wie sie Richter fordert, wurde vor vier Jahren offenbar noch kaum praktiziert.
  13. Kaltenborn, K.-F.: Endnutzerrecherchen in der CD-ROM-Datenbank Medline : T.1: Evaluations- und Benutzerforschung über Nutzungscharakteristika, Bewertung der Rechercheergebnisse und künftige Informationsgewinnung; T.2: Evaluations- und Benutzerforschung über Recherchequalität und Nutzer-Computer/Datenbank-Interaktion (1991) 0.00 
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  14. Wildemuth, B.M.: Effective methods for studying information seeking and use : Introduction and overview (2002) 0.00 
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    Abstract
    In conjunction with the American Society for Information Science and Technology's (ASIST) annual meeting in fall 2001, the Special Interest Group an Information Needs, Seeking, and Use (SIG USE) sponsored a research symposium an "Effective Methods for Studying Information Seeking and Use." The symposium was intended to address the SIG's goal of promoting studies of human information behavior by focusing an the research methods that can most effectively be used to study information needs, information seeking, information use, and other human information behaviors. The symposium included the presentation of six refereed articles, which were revised based an the discussion at the symposium and are included here. The six articles describe the application of a variety of research methods, singly or in combination. Some of the methods are most appropriate for studying individuals and their interactions with information, while others can be applied to studying group behaviors. The studies were conducted in a variety of settings, from a Web-searching laboratory to an archive, from hospitals to the great outdoors (i.e., forest and river sites). Each method or set of methods was applied to a particular user group, including young children, teenagers, and adults. Each article makes a unique contribution to our repertoire of research methods, as briefly reviewed here.
    Date
    20. 1.2003 9:37:22
  15. Shiri, A.A.; Revie, C.: Query expansion behavior within a thesaurus-enhanced search environment : a user-centered evaluation (2006) 0.00 
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    Abstract
    The study reported here investigated the query expansion behavior of end-users interacting with a thesaurus-enhanced search system on the Web. Two groups, namely academic staff and postgraduate students, were recruited into this study. Data were collected from 90 searches performed by 30 users using the OVID interface to the CAB abstracts database. Data-gathering techniques included questionnaires, screen capturing software, and interviews. The results presented here relate to issues of search-topic and search-term characteristics, number and types of expanded queries, usefulness of thesaurus terms, and behavioral differences between academic staff and postgraduate students in their interaction. The key conclusions drawn were that (a) academic staff chose more narrow and synonymous terms than did postgraduate students, who generally selected broader and related terms; (b) topic complexity affected users' interaction with the thesaurus in that complex topics required more query expansion and search term selection; (c) users' prior topic-search experience appeared to have a significant effect on their selection and evaluation of thesaurus terms; (d) in 50% of the searches where additional terms were suggested from the thesaurus, users stated that they had not been aware of the terms at the beginning of the search; this observation was particularly noticeable in the case of postgraduate students.
    Date
    22. 7.2006 16:32:43
  16. Cothey, V.: ¬A longitudinal study of World Wide Web users' information-searching behavior (2002) 0.00 
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    Abstract
    A study of the "real world" Web information searching behavior of 206 college students over a 10-month period showed that, contrary to expectations, the users adopted a more passive or browsing approach to Web information searching and became more eclectic in their selection of Web hosts as they gained experience. The study used a longitudinal transaction log analysis of the URLs accessed during 5,431 user days of Web information searching to detect changes in information searching behavior associated with increased experience of using the Web. The findings have implications for the design of future Web information retrieval tools
  17. Jansen, B.J.; Spink, A.: How are we searching the World Wide Web? : A comparison of nine search engine transaction logs (2006) 0.00 
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    Abstract
    The Web and especially major Web search engines are essential tools in the quest to locate online information for many people. This paper reports results from research that examines characteristics and changes in Web searching from nine studies of five Web search engines based in the US and Europe. We compare interactions occurring between users and Web search engines from the perspectives of session length, query length, query complexity, and content viewed among the Web search engines. The results of our research shows (1) users are viewing fewer result pages, (2) searchers on US-based Web search engines use more query operators than searchers on European-based search engines, (3) there are statistically significant differences in the use of Boolean operators and result pages viewed, and (4) one cannot necessary apply results from studies of one particular Web search engine to another Web search engine. The wide spread use of Web search engines, employment of simple queries, and decreased viewing of result pages may have resulted from algorithmic enhancements by Web search engine companies. We discuss the implications of the findings for the development of Web search engines and design of online content.
  18. Spink, A.; Danby, S.; Mallan, K.; Butler, C.: Exploring young children's web searching and technoliteracy (2010) 0.00 
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    Abstract
    Purpose - This paper aims to report findings from an exploratory study investigating the web interactions and technoliteracy of children in the early childhood years. Previous research has studied aspects of older children's technoliteracy and web searching; however, few studies have analyzed web search data from children younger than six years of age. Design/methodology/approach - The study explored the Google web searching and technoliteracy of young children who are enrolled in a "preparatory classroom" or kindergarten (the year before young children begin compulsory schooling in Queensland, Australia). Young children were video- and audio-taped while conducting Google web searches in the classroom. The data were qualitatively analysed to understand the young children's web search behaviour. Findings - The findings show that young children engage in complex web searches, including keyword searching and browsing, query formulation and reformulation, relevance judgments, successive searches, information multitasking and collaborative behaviours. The study results provide significant initial insights into young children's web searching and technoliteracy. Practical implications - The use of web search engines by young children is an important research area with implications for educators and web technologies developers. Originality/value - This is the first study of young children's interaction with a web search engine.
  19. Spink, A.; Wolfram, D.; Jansen, B.J.; Saracevic, T.: Searching the Web : the public and their queries (2001) 0.00 
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    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.
  20. Scholle, U.: Kann ich Ihnen behilflich sein? : Erhebung am zentralen Auskunftsplatz der ULB Münster (2000) 0.00 
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    Date
    22. 1.2000 17:52:11

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