Search (199 results, page 10 of 10)

  • × theme_ss:"Benutzerstudien"
  • × year_i:[2000 TO 2010}
  1. Gilliland-Swetland, A.J.; Kafai, Y.B.; Landis, W.E.: Application of Dublin Core metadata in the description of digital primary sources in elementary school classrooms (2000) 0.00 
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  2. Diepolder, S.: Was ist eine Köperschaft? : Umfrage zur Opac-Nutzung an der Universitätsbibliothek Tübingen (2003) 0.00 
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  3. Weichert, M.: "Gibt es auch Wahnsinn" : Benutzeruntersuchungen an einem Hamburger WebOPAC (2002) 0.00 
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  4. Bilal, D.; Kirby, J.: Differences and similarities in information seeking : children and adults as Web users (2002) 0.00 
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    Abstract
    This study examined the success and information seeking behaviors of seventh-grade science students and graduate students in information science in using Yahooligans! Web search engine/directory. It investigated these users' cognitive, affective, and physical behaviors as they sought the answer for a fact-finding task. It analyzed and compared the overall patterns of children's and graduate students' Web activities, including searching moves, browsing moves, backtracking moves, looping moves, screen scrolling, target location and deviation moves, and the time they took to complete the task. The authors applied Bilal's Web Traversal Measure to quantify these users' effectiveness, efficiency, and quality of moves they made. Results were based on 14 children's Web sessions and nine graduate students' sessions. Both groups' Web activities were captured online using Lotus ScreenCam, a software package that records and replays online activities in Web browsers. Children's affective states were captured via exit interviews. Graduate students' affective states were extracted from the journal writings they kept during the traversal process. The study findings reveal that 89% of the graduate students found the correct answer to the search task as opposed to 50% of the children. Based on the Measure, graduate students' weighted effectiveness, efficiency, and quality of the Web moves they made were much higher than those of the children. Regardless of success and weighted scores, however, similarities and differences in information seeking were found between the two groups. Yahooligans! poor structure of keyword searching was a major factor that contributed to the "breakdowns" children and graduate students experienced. Unlike children, graduate students were able to recover from "breakdowns" quickly and effectively. Three main factors influenced these users' performance: ability to recover from "breakdowns", navigational style, and focus on task. Children and graduate students made recommendations for improving Yahooligans! interface design. Implications for Web user training and system design improvements are made.
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  5. Bilal, D.: Children's use of the Yahooligans! Web search engine : II. Cognitive and physical behaviors on research tasks (2001) 0.00 
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    Abstract
    This study reports the results of Part 11 of a research project that investigated the cognitive and physical behaviors of middle school students in using Yahooligans! Seventeen students in the seventh grade searched Yahooligans! to locate relevant information for an assigned research task. Sixty-nine percent partially succeeded, while 31 % failed. Children had difficulty completing the task mainly because they lacked adequate level of research skills and approached the task by seeking specific answers. Children's cognitive and physical behaviors varied by success levels. Similarities and differences in children's cognitive and physical behaviors were found between the research task and the factbased task they performed in the previous study. The present study considers the impact of prior experience in using the Web, domain knowledge, topic knowledge, and reading ability on children's success. It reports the overall patterns of children's behaviors, including searching and browsing moves, backtracking and looping moves, and navigational styles, as well as the time taken to complete the research task. Children expressed their information needs and provided recommendations for improving the interface design of Yahooligans! Implications for formal Web training and system design improvements are discussed
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  6. Lucas, W.; Topi, H.: Form and function : the impact of query term and operator usage on Web search results (2002) 0.00 
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    Abstract
    Conventional wisdom holds that queries to information retrieval systems will yield more relevant results if they contain multiple topic-related terms and use Boolean and phrase operators to enhance interpretation. Although studies have shown that the users of Web-based search engines typically enter short, term-based queries and rarely use search operators, little information exists concerning the effects of term and operator usage on the relevancy of search results. In this study, search engine users formulated queries on eight search topics. Each query was submitted to the user-specified search engine, and relevancy ratings for the retrieved pages were assigned. Expert-formulated queries were also submitted and provided a basis for comparing relevancy ratings across search engines. Data analysis based on our research model of the term and operator factors affecting relevancy was then conducted. The results show that the difference in the number of terms between expert and nonexpert searches, the percentage of matching terms between those searches, and the erroneous use of nonsupported operators in nonexpert searches explain most of the variation in the relevancy of search results. These findings highlight the need for designing search engine interfaces that provide greater support in the areas of term selection and operator usage
    Type
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  7. Gorman, P.; Lavelle, M.; Delcambre, L.; Maier, D.: Following experts at work in their own information spaces : using observational methods to develop tools for the digital library (2002) 0.00 
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    Abstract
    Digital libraries allow information access to be integrated into work processes rather than separated from them, but also have the potential to overwhelm users with excessive or irrelevant information, impairing their performance rather than improving it. With the opportunity to create new models of what a library is and how it can be used comes the challenge of improving our understanding of its patrons, their work, and the circumstances under which they perform it. In this article we offer an overview of our experiences using observational methods to learn about one class of users, expert clinicians treating patients in hospital settings. We describe the evolution of our understanding of the users and their informational tasks, and how this evolving understanding is guiding our efforts to create digital library technology. The multidisciplinary composition of our team has enriched our observations and improved the validity of our analysis and interpretations. The multiple observation methods we have employed, including "thinkaloud" scenarios in the laboratory, participant observation in the field, key Informant Interviews, and focus group sessions, have enabled us to enrich the data set, gain greater insight, and verify findings with informants. The relatively tight cycle of observation, analysis, development, and repeat observation has enabled us to iteratively and more rapidly refine our "user model" and "task model," improving, we hope, the usefulness of the technologies we are developing.
    Type
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  8. Thissen, F.: Verloren in digitalen Netzen : Nutzertests zur Optimierung der Bedienerfreundlichkei eines Online-Katalogs (2002) 0.00 
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  9. McQueen, T.F.; Fleck, R.A. Jr.: Changing patterns of Internet usage and challenges at colleges and universities (2005) 0.00 
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    Abstract
    Increased enrollments, changing student expectations, and shifting patterns of Internet access and usage continue to generate resource and administrative challenges for colleges and universities. Computer center staff and college administrators must balance increased access demands, changing system loads, and system security within constrained resources. To assess the changing academic computing environment, computer center directors from several geographic regions were asked to respond to an online questionnaire that assessed patterns of usage, resource allocation, policy formulation, and threats. Survey results were compared with data from a study conducted by the authors in 1999. The analysis includes changing patterns in Internet usage, access, and supervision. The paper also presents details of usage by institutional type and application as well as recommendations for more precise resource assessment by college administrators.
  10. Poll, R.: Informationsverhalten und Informationsbedarf der Wissenschaft : Teil 1 der Nutzungsanalyse des Systems der überregionalen Literatur- und Informationsversorgung (2004) 0.00 
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  11. Huang, M.-h.; Wang, H.-y.: ¬The influence of document presentation order and number of documents judged an users' judgments of relevance (2004) 0.00 
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  12. Kim, K.-S.: Effects of emotion control and task on Web searching behavior (2008) 0.00 
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  13. Heinrichs, J.H.; Lim, K.-S.; Lim, J.-S.; Spangenberg, M.A.: Determining factors of academic library Web site usage (2007) 0.00 
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  14. Hsieh-Yee, I.: Research on Web-search behavior (2001) 0.00 
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  15. Strebe, R.: Empirische Untersuchtung von emotionalen Reaktionen im Prozess der Informationsrecherche im Web (2009) 0.00 
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  16. Höchstötter, N.: Suchverhalten im Web : Erhebung, Analyse und Möglichkeiten (2007) 0.00 
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  17. Wagner-Döbler, R.: Was taugen Print und Online-Ausgaben? : Informationsmittel im direkten Usability-Vergleich (2004) 0.00 
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  18. Kluck, M.: ¬Die Informationsanalyse im Online-Zeitalter : Befunde der Benutzerforschung zum Informationsverhalten im Internet (2004) 0.00 
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  19. Kübler, H.-D.: Aufwachsen mit dem Web : Surfen eher selten: zwei Studien zur Internetnutzung von Kindern (2005) 0.00 
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