Search (12 results, page 1 of 1)

  • × author_ss:"Nahl, D."
  1. Nahl, D.: User-centered revolution: 1995-2008 (2009) 0.03
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    Abstract
    This entry reviews a sample of current research on information behavior (IB), examines recent research on online IB and use of electronic resources offered in libraries, describes the state of user-centered design, provides evidence of a commitment to the user-centered paradigm in library and information science research and education, and presents the response to the unprecedented rise of online participatory culture.
    Date
    27. 8.2011 14:32:22
    Type
    a
  2. Luo, M.M.; Nahl, D.: Let's Google : uncertainty and bilingual search (2019) 0.00
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    Abstract
    This study applies Kuhlthau's Information Search Process stage (ISP) model to understand bilingual users' Internet search experience. We conduct a quasi-field experiment with 30 bilingual searchers and the results suggested that the ISP model was applicable in studying searchers' information retrieval behavior in search tasks. The ISP model was applicable in studying searchers' information retrieval behavior in simple tasks. However, searchers' emotional responses differed from those of the ISP model for a complex task. By testing searchers using different search strategies, the results suggested that search engines with multilanguage search functions provide an advantage for bilingual searchers in the Internet's multilingual environment. The findings showed that when searchers used a search engine as a tool for problem solving, they might experience different feelings in each ISP stage than in searching for information for a term paper using a library. The results echo other research findings that indicate that information seeking is a multifaceted phenomenon.
    Type
    a
  3. Workman, T.E.; Fiszman, M.; Rindflesch, T.C.; Nahl, D.: Framing serendipitous information-seeking behavior for facilitating literature-based discovery : a proposed model (2014) 0.00
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    Abstract
    Several researchers have studied serendipitous knowledge discovery in information-seeking behavior. Electronic data in the form of semantic predications have a potential role in literature-based discovery, which can be guided by serendipitous knowledge discovery research findings. We sought to model information-seeking behavior within the context of serendipitous knowledge discovery by leveraging existing research. These efforts were done with an eye for a potential literature-based discovery application that utilizes semantic predications. We performed a literature search, reviewed the results, and applied the findings in developing a model for serendipitous knowledge discovery as an information-seeking behavior. The literature review indicated four important themes in serendipitous knowledge discovery: iteration, change or clarification, a seeker's prior knowledge, and the role of information organization and presentation. The Interaction Flow in Serendipitous Knowledge Discovery (IF-SKD) model includes these themes, and accommodates iterative, evolving search interests. Output can be presented in a manner to enhance short-term memory conceptualization and connections with prior knowledge. Although the IF-SKD model is currently a theoretical structure, its utility is demonstrated through replicating a literature-based discovery event, using a documented search method within the model's steps. The IF-SKD model can potentially serve as the foundation for future literature-based discovery applications.
    Type
    a
  4. Nahl, D.; Harada, V.H.: Composing Boolean search statements : self-confidence, concept analysis, search logic and errors (1996) 0.00
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    Abstract
    Describes an experiment in which secondary students from 6 schools on the island of Oahu, Hawaii, were tested for their ability to interpret and construct search statements in a presearch activity. Students read brief instructions on concept analysis, Boolean operators, and search statement format. One group used a worksheet. A 10item quiz tested students' knowledge of term selection and search logic and obtained self confidence ratings after answering each question. Search statements were analyzed according to a typology of search statement errors. On average, each student made 2 errors per search statement. Students with higher self confidence ratings had significantly higher scores on all measures
    Type
    a
  5. Nahl, D.: ¬The user-centered revolution : 1970-1995 (1998) 0.00
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    Type
    a
  6. Nahl, D.: Learning the Internet and the structure of information behavior (1998) 0.00
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    Abstract
    Internet use research has focused on user surveys and novice learner studies, using survey, experimental, and ethnographic methods. They share a focus on user-based categories in the affective and cognitve domains. Information behaviour has an affective component that influences the direction of cognitive processing through hierarchically organized goals, characterized by both an individual and a cultural component. Research in human-computer interaction is evolving a user-centred methodology for system design and instruction that focuses on integrating affective and cognitive user variables to increase productivity, creativity, and human growth
    Type
    a
  7. Nahl, D.: Ethnography of novices' first use of Web search engines : affective control in cognitive processing (1998) 0.00
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    Abstract
    Reports results of a study, conducted at Hawaii University, Department of Information and Computer Science, to understand the novide searchers' experience in learning to use a WWW search engine. Without prior searching instruction, undergraduate novives wrote structured self reports during their first session on a Web search engine. Users choose their own topics and followed written instructions that prompted them to describe thoughts and feelings during specified stages of the search; pre search formulation; search statement formulation; search strategy; and evaluation of the results. The sentences in the self reports were numbered and then coded according to their affective or cognitive function. The affective sentences reveal how users set goals and limit the scope of the cognitive operations. Search acts appear to be governed by an affective filter that organizes incoming information and provides criteria for ranking cognitive relevance to search goal. Content analysis identifies reasons users have for rating self confidence, stress level, satisfaction, usefulness, and success with future searches
    Type
    a
  8. Nahl, D.: Social-biological information technology : an integrated conceptual framework (2007) 0.00
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    Abstract
    A model is proposed that is motivated by the growing theoretical importance of the affective domain in information science (IS) and human-computer interaction (HCI), and the increased need for integrated models that provide an explicit account of how human mental and physiological systems dynamically interact in task performance with information systems. The ecological constructionism framework defines a social and biological information technology that is created through the dynamic intersection of technological affordances in symbiotic interaction with affective, cognitive, and sensorimotor information procedures that users creatively construct to satisfice the social practices inherent in information settings. Samples of spontaneous user discourse were mapped, demonstrating the model's suitability for charting the flow of mental procedures that users perform in interaction with information systems. The framework is shown to be compatible with the research focus in the literature on information behavior in IS and user affect in HCI. It also addresses current challenges to create more versatile architectures integrating technology, biology, and community into organic or synergic systems. The model specifies the components and dynamics of a human-computer symbiotic information environment.
    Type
    a
  9. Nahl, D.; Tenopir, C.: Affective and cognitive searching behavior of novice end-users of a full-text database (1996) 0.00
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    Footnote
    Novice end users were given 2 hours of training in searching a full-text magazine database (Magazine ASAP(TM)) on DIALOG. Subjects searched during 3 to 4 sessions in the presence of a trained monitor who prompted them to think aloud throughout the sessions. qualitative analysis of the transcripts and transaction logs yielded empirical information on user variables (purpose, motivation, satisfaction), uses of the database, move types, and every question users asked during the searches. The spontaneous, naturalistic questions were categorized according to affective, cognitive, and sensorimotor speech acts. Results show that most of the searches were performed for the self and were work related. The most common use of the database was to retrieve full-text articles online and to download and print them out rather than read them on screen. The majority of searches were judged satisfactory. Innovative uses included browsing for background information and obtaining contextualized sentences for language teaching. Searchers made twice as many moves to limit sets as moves to expand sets. Affective questions outnumbered cognitive and sensorimotor questions by two to one. This preponderance of affective micro-information needs during searching might be addressed by new system functions
    Type
    a
  10. Nahl, D.: User-centered revolution: 1970-1995 (2009) 0.00
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    a
  11. Nahl, D.: Creating user-centered instructions for novice end-users (1999) 0.00
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    Abstract
    In response to the proliferation of information retrieval systems in academic libraries since the early 1980s, librarians have created many written search aids designed to help users learn how to search database systems. Written instructional material continues to increase in quantity and in importance with the rise of remote users and the advent of asynchronous distance learning. Since many users will have only written instructions to consult, it is crucial to determine the effectiveness of these materials. How useful are these instructions? Do people consult them? Do they help users make progress in their searches? There is a small but useful body of research on the effectiveness of both print and online search aids. This research points to the need to test materials on user groups. The findings from studies of novices using written instructions identify specific guidelines for creating effective materials.
    Type
    a
  12. Nahl, D.: Information counseling inventory of affective and cognitive reactions while learning the Internet (1997) 0.00
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    a