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  • × theme_ss:"Benutzerstudien"
  1. Bank, C.: ¬Die Usability von Online-Wörterbüchern und elektronischen Sprachportalen (2012) 0.01 
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    Abstract
    Die Arbeit untersucht die Usability von Online-Wörterbüchern und elektronischen Sprachportalen und soll eine Brücke zwischen der Usability von Websites hinsichtlich softwareergonomischer Normen und Konventionen und Wörterbüchern in elektronischer Form schlagen. Die einzige Usability-Methode, mit der es möglich ist, konkrete und empirisch belegte Aussagen darüber zu treffen, wie potentielle Nutzer ein Online-Wörterbuch verwenden und welche Probleme dabei festgestellt werden, ist ein Usability- Test mit realen Benutzern. Als Untersuchungsgegenstand dient das Online-Wortschatz-Informationssystem Deutsch (Owid), die Base lexicale du français (BLF) und das elektronische Lernerwörterbuch Deutsch-Italienisch (Eldit). Die Arbeit setzt sich aus vier verschiedenen empirischen Studien zusammen. Da ein Usability-Test immer nur einen Ausschnitt an Funktionalitäten aus einem gesamten System widerspiegeln kann, wurden mithilfe einer empirischen Fragebogen-Studie zunächst die für den Benutzer wichtigsten und am meisten verwendeten Funktionen eines Online-Wörterbuchs identifiziert und als Grundlage für den Test gewählt. Eine anschließende heuristische Evaluation trug potentielle Usability-Probleme der drei Online- Wörterbücher zusammen und stellte die Grundlage für die Thesenstellung des Usability-Tests dar. Der Test setzte sich aus zwei empirischen Teilen zusammen: Einem Aufgabenteil, den die Testperson für jedes der drei Online-Wörterbüchern einzeln bearbeiten und dabei die Testmethode des lauten Denkens anwenden musste und einem Post-Test- Fragebogen, der direkt nach dem Bearbeiten des jeweiligen Aufgabenkatalogs ausgefüllt wurde. Der gesamte Test wurde mit Morae, einer Software u. a. für Software- und Website- Usability-Tests, durchgeführt und ausgewertet.
    Type
    a
  2. Wagner-Döbler, R.: Was taugen Print und Online-Ausgaben? : Informationsmittel im direkten Usability-Vergleich (2004) 0.01 
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    Abstract
    Unsere Medienwelt ist vom Nebeneinander verschiedener Ausgabeformen derselben Inhalte geprägt. Es herrscht jedoch Mangel an Untersuchungen, welche die "usability" von Printmedien mit der von Online-Medien direkt vergleichen. Im Rahmen eines Projektseminars am Institut fürBibliothekswissenschaft der Humboldt- Universität Berlin wurde die Usability von gedruckten und von Online-Informationsmitteln anhand heuristischer Kriterien verglichen. Als Benutzungsaspekte bündelndes und messbares Kriterium wurde der Zeitbedarf zur Beantwortung einfacher Testaufgaben ermittelt, die sowohl anhand der Print- als auch anhand der Online-Version je eines Versandhauskatalogs und eines Vorlesungsverzeichnisses zu beantworten waren. Die Prognosen sowie die Ergebnisse dreier Gruppen (Bibliothekswissenschaft-Studenten, Informatik-Studenten und Laien) wurden verglichen. Der Zeitbedarf für die Nutzung der Printmedien wurde von den Bibliothekswissenschaft- und Informatik-Studenten zu hoch prognostiziert, für Online-Medien zu niedrig. Der tatsächliche Zeitbedarf bewegte sich in ähnlicher Größenordnung bei beiden Versionen des Vorlesungsverzeichnisses. Bei der Nutzung des Versandhauskatalogs hingegen war der Zeitbedarf online doppelt so hoch wie beim Printmedium. Zusätzlich war bei Nutzung der Online-Version die Hälfte der Antworten falsch. Der Grad an subjektiver Unsicherheit über die Richtigkeit der Antworten wurde, damit übereinstimmend, bei der Online-Version deutlich höher eingeschätzt als beim Printmedium. Die Testergebnisse derdrei Gruppen unterschieden sich beim Versandhauskatalog nur wenig. Die Ergebnisse werden als Hinweis auf schlechten Entwicklungsstand der Usability von Online-Medien gedeutet. Die Usabilityvon konventionellen Medien scheint von "computernahen" Nutzern unterschätzt zu werden. Bei der Nutzung von Online-Medien wird in derLiteratur oft hohe subjektive Unsicherheit über die Angemessenheit oder Richtigkeit der Suchresultate berichtet, die hier bestätigt wird und zugleich mit einem hohen Anteil objektiv falscher Antworten korrespondiert. Es wird dafür plädiert in die Usability-Forschung konventionelle Medien einzubeziehen und stärker interdisziplinär vorzugehen.
    Type
    a
  3. Schmidt, E.; Weigang, G.; Schulz, U.: OPAC-Nutzer ernst genommen : eine Thinking-Aloud-Studie am ALS-OPAC der Hamburger Öffentlichen Bücherhallen (1997) 0.01 
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    Abstract
    Describes a thinking aloud study with OPAC users at HÖB which revealed considerable difficulties caused by the inadequate design of the interface and the search options for online catalogues. Reports results of an analysis of comments by users on misunderstandings and abortive search attempts which provides insights into strategies for improved OPAC design
    Date
    23.10.1996 17:26:29
    Type
    a
  4. Wallace, P.M.: Periodical title searching in online catalogues (1997) 0.01 
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    Abstract
    Reports on a dramatic shift from subject to periodical title searching at Colorado University Libraries. States possible reasons for the change, examines problems encountered by users with searching the periodical title index and suggests how this change in online catalogue searching may affect future catalogue design and bibliographic instruction
    Date
    29. 7.1998 10:57:22
    Type
    a
  5. Hancock-Beaulieu, M.: ¬A comparative transaction log analysis of browsing and search formulation in online catalogues (1993) 0.01 
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    Abstract
    OLIVE, a transaction logging facility enhanced with online questionnaires, was used to collect data from users of public and academic library catalogues. The comparative analysis of subject searching behaviour focused on the role of browsing subject headings and brief references in search formulation. Opportunities for browsing are greatly constrained by indexing practices. It is suggested that a more integrated approach to pre-coordinate and post-coordinate searching would be more effective. The logging software has been developed for a number of commercial online catalogues including Geac, CLSI and LIBERTAS. The use of a diagnostic and monitoring tool in the evaluation of OPACs is advocated
    Type
    a
  6. Hancock-Beaulieu, M.; Robertson, S.; Neilson, C.: Evaluation of online catalogues : eliciting information from the user (1991) 0.01 
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    Abstract
    An investigation of tools, techniques, and methods for the evaluation of interactive library catalogues is described, with emphasis on diagnostic methods and on use of the catalogue in a wider context of user information seeking behaviour. A front-end system (Olive) was developed to test verious enhancements of traditional transaction logging as a data-gathering technique for evaluation purposes. These include full-screen logging, pre- and post-search, online/offline, and in-search interactive questionnaires, search replys as well as talk-aloud. The extent of subject or hybrid searching activity as opposed to specific item searching is also highlighted
    Type
    a
  7. Witt, M.: Survey on the use of the catalogue at the médiathèque of the cité des sciences et de l'industrie (CSI) (1993) 0.01 
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    Abstract
    An exploratory research study on OPACs was done within the framework of the French PARINFO program by four different teams: ENSSIB-CERSI, City Univ. of London, Médiathèque of the Cité des Sciences et de l'industrie and a firm GSI-ERLI. During the month of June 1992, 650 individual searches on four terminals were collected. The sessions were automatically recorded, accompanied by two online questionnaires, a pre-search and a post-search questionnaire. Some questions were asked orally by an interviewer and the answers noted. The article analyses the researches perceived by user as difficult or impossible. Some examples of the difficulties are given
  8. Cleverley, P.H.; Burnett, S.; Muir, L.: Exploratory information searching in the enterprise : a study of user satisfaction and task performance (2017) 0.00 
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    Abstract
    No prior research has been identified that investigates the causal factors for workplace exploratory search task performance. The impact of user, task, and environmental factors on user satisfaction and task performance was investigated through a mixed methods study with 26 experienced information professionals using enterprise search in an oil and gas enterprise. Some participants found 75% of high-value items, others found none, with an average of 27%. No association was found between self-reported search expertise and task performance, with a tendency for many participants to overestimate their search expertise. Successful searchers may have more accurate mental models of both search systems and the information space. Organizations may not have effective exploratory search task performance feedback loops, a lack of learning. This may be caused by management bias towards technology, not capability, a lack of systems thinking. Furthermore, organizations may not "know" they "don't know" their true level of search expertise, a lack of knowing. A metamodel is presented identifying the causal factors for workplace exploratory search task performance. Semistructured qualitative interviews with search staff from the defense, pharmaceutical, and aerospace sectors indicates the potential transferability of the finding that organizations may not know their search expertise levels.
    Type
    a
  9. Drabenstott, K.M.; Weller, M.S.: Failure analysis of subject searches in a test of a new design for subject access to online catalogs (1996) 0.00 
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    Abstract
    This article describes the findings of a research project that tested a new subject-access design in an experimental online catalog that had a wide range of subject-searching capabilities and search trees to govern the system's selection of searching capabilities in response to user queries. Library users at 2 academic libraries searched this experimental catalog for topics of their own choosing, judges the usefulness of retrieved titles, and answered post-search questions about their searching experiences. Mixed results from a quantitative analysis (i.e., precision scores) were supplemented with the more conclusive results from a qualitative analysis (i.e., failure analysis). Overall, analyses demonstrated that the new subject-access design that featured search trees was more effective in selecting a subject-searching approach that would prooduce useful information for the subjects users seek than users would select on their own. The qualitative analysis was especially helpful in providing recommendations for improving specific subject-searching approaches to increase their effenciency, increase user perseverance, and encourage browsing. It also suggested enhancements to the new subject-searching design to enable systems to respond to the wide variety of user queries for subjects
    Type
    a
  10. Waligora, J.: Benutzerverhalten in Freihandbibliotheken (1975) 0.00 
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    Source
    Bibliothekar. 29(1975), S.659-664
    Type
    a
  11. Park, I.: ¬A comparative study of major OPACs in selected academic libraries for developing countries : user study and subjective user evaluation (1997) 0.00 
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    Abstract
    Provides information on the characteristics of 5 online catalogue systems in 5 academic libraries in the austin, Texas and North Texas, USA, and their use by Korean students at University of North Texas, USA, in order to assist system managers in the selection of online catalogues. Proposes recommendations when designing, adopting, or managing a new online catalogue system. Topics for further studies on the characteristics of online systems and their use are also suggested
    Source
    International information and library review. 29(1997) no.1, S.67-83
    Type
    a
  12. 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
    Type
    a
  13. Atkinson, J.D.; Figueroa, M.: Information seeking behaviour of business students : a research study (1997) 0.00 
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    Abstract
    Investigates library use and research behaviour of business students at California State University at San Marcos. A sample of 68 graduate and 91 undergraduate students were surveyed and observed for their behaviour in 3 conceptual domains: query formulation and task assignments, prereference process expectations and post reference process responses. Participant observations confirmed many of the student attitudes revealed in the survey
    Type
    a
  14. Wilson, T.D.: Exploring models of information behaviour : the 'uncertainty' project (1999) 0.00 
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    Date
    23. 3.2002 9:29:18
    Source
    Exploring the contexts of information behaviour: Proceedings of the 2nd International Conference on Research in Information Needs, Seeking and Use in Different Contexts, Sheffield, UK, 1998. Ed. by D.K. Wilson u. D.K. Allen
    Type
    a
  15. Tomney, H.; Burton, P.F.: Electronic journals : a case study of usage and attitudes among academics (1998) 0.00 
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    Abstract
    Reports results of a questionnaire survey to assess the attitudes of scholarly users towards electronic journals and examines the current level of use of these publications by university academics in 2 departments in each of 5 faculties of a UK university
    Date
    22. 5.1999 19:07:29
    Type
    a
  16. 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.
    Type
    a
  17. Berger, M.; Moore, M.J.: ¬The user meets the MELVYL system (1996) 0.00 
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    Abstract
    Reports on a study carried out by the Division of Library Automation, University of California, into the characteristics of use and the success rates of users searching the MELVYL Catalog and Ten-Year databases. Examines a series of user sessions extracted randomly from the MELVYL transaction log and developing a profile of online system use. 1.444 sessions were chosen from 11-17 Apr 92. 3 levels of use were examined: the individual command, the search objective, and the session. Details the findings, and discusses their design implications
    Date
    29. 1.1996 12:21:39
    Type
    a
  18. Song, Y.-S.: International business students : a study on their use of electronic library services (2004) 0.00 
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    Abstract
    This study seeks to explore and report international business students' perceptions and expectations of electronic library services at the University of Illinois at Urbana-Champaign. A total of 143 international business students an campus volunteered to fill out a survey. The results were analyzed using descriptive statistics as weIl as inferential statistics such as t-tests and correlation. A significant portion of international business students has no prior experience with electronic library services in their home countries. Moreover, about a half of international business students go to libraries other than the Business and Economics Library, partly because they provide better environment for study. Although electronic resources are available without the constraint of location, providing reference services for those who do not use the Business and Economics Library becomes a challenge. Virtual reference is an excellent tool, but most international business students do not see it as an important library service. Based an the results, implications for information literacy and virtual reference service are discussed.
    Field
    Wirtschaftswissenschaften
    Type
    a
  19. Kilgour, F.G.: Online retrieval of single-screen miniature catalogues by university library users (1995) 0.00 
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    Abstract
    Reports the findings of an experiment simulating use of a university OPAC by academic library users. Examines how effective are online searches by university library users employing surname plus first title word, or last title word, or first and last title words in producing miniature catalogues of i screen. The searches were known item searches for books
    Source
    Online information 95: Proceedings of the 19th International online information meeting, London, 5-7 December 1995. Ed.: D.I. Raitt u. B. Jeapes
    Type
    a
  20. Summey, T.P.; Walchle, B.A.: ¬An investigation into use and instruction for an online catalog (1992) 0.00 
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    Abstract
    Presents a study questioning catalogue users at Emporia State Univ. about their experiences and their evaluation of NOTIS in order to access how patrons felt about the catalogue and how well they used it. The study focused on the instruction offered by 59 randomly selected NOTIS libraries. Responses were solicited concerning the university or college, the library, and training methods for OPAC users. With the information gained through both parts, the library instruction program and information regarding NOTIS at White Library could be evaluated and modified
    Source
    Technical services quarterly. 10(1992) no.2, S.29-49
    Type
    a

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