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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
141

Information Seeking Behaviors in a Population of Assistive Mobility Device Users

White, Mel., 1949- 05 1900 (has links)
The author explores the current state of information exchange and access in the procurement process for mobility assistive equipment. While the idealized model is of a linear process starting with a need and ending with the purchase, in practice the procedures for acquiring a device such as a wheelchair or electric scooter can be a time consuming task that involves client, family, medical care specialists, vendors, manufacturers, insurance companies and possibly alternate sources of funding. This study utilized Participatory Action Research (PAR) to collect both qualitative and quantitative data about information sources such as the Internet, the medical community, and vendors. The findings of this study suggest that in spite of the presence of the Internet, overall primary sources are similar to the traditional model and that for most there is no one source that could be easily accessed for information. A brief examination is made of the “Information landscape” utilized in the process and a brief discussion of two relatively unmentioned information sources: expos and the wheelchair sports community.
142

Information Behaviors of Doctoral Business Students: A Digital Learning Perspective

Dorrell, Erin Kathryn 10 November 2022 (has links)
No description available.
143

A Study of Physicians' Serendipitous Knowledge Discovery: An Evaluation of Spark and the IF-SKD Model in a Clinical Setting

Hopkins, Mark E 05 1900 (has links)
This research study is conducted to test Workman, Fiszman, Rindflesch and Nahl's information flow-serendipitous knowledge discovery (IF-SKD) model of information behavior, in a clinical care context. To date, there have been few attempts to model the serendipitous knowledge discovery of physicians. Due to the growth and complexity of the biomedical literature, as well as the increasingly specialized nature of medicine, there is a need for advanced systems that can quickly present information and assist physicians to discover new knowledge. The National Library of Medicine's (NLM) Lister Hill Center for Biocommunication's Semantic MEDLINE project is focused on identifying and visualizing semantic relationships in the biomedical literature to support knowledge discovery. This project led to the development of a new information discovery system, Spark. The aim of Spark is to promote serendipitous knowledge discovery by assisting users in maximizing the use of their conceptual short-term memory to iteratively search for, engage, clarify and evaluate information presented from the biomedical literature. Using Spark, this study analyzes the IF- SKD model by capturing and analyzing physician feedback. The McCay-Peet, Toms and Kelloway's Perception of Serendipity and Serendipitous Digital Environment (SDE) questionnaires are used. Results are evaluated to determine whether Spark contributes to physicians' serendipitous knowledge discovery and the ability of the IF-SKD ability to capture physicians' information behavior in a clinical setting.
144

How We Know When We Don't Know Enough: Neural Representations of Probabilistic Inference and Information Demand

Singletary, Nicholas Martin January 2023 (has links)
In real-world settings, decision-making typically resembles a stepwise process in which one decides which information to sample before deciding to which decision option to commit. The former step is called instrumental information-seeking, and theoretical and empirical findings indicate that it is mediated by the value of information (VOI), the extent to which obtaining information increases the expected value of future actions and decisions. Economic theory predicts that to estimate VOI, decision-makers conduct a preposterior analysis in which they prospect what they would expect to know about the decision options after observing the information—or, in terms of Bayesian inference, they should prospect the future posterior probabilities. But the neural mechanisms underlying this early step of the computation of VOI remain an open question. Therefore, to further investigate the neural substrates of instrumental information-seeking, we used functional magnetic resonance imaging (fMRI) in conjunction with two interrelated behavioral tasks in humans. With one task, we examined the demand for instrumental information, but since preposterior analysis relies on the prospection of potential future posterior beliefs, we included another task to examine how people form posterior beliefs after receiving information. We found that regions of posterior parietal cortex and occipital fusiform gyrus appear to support a preposterior analysis through the prospection of expected posterior certainty. This aligned with our finding of a region of parieto-occipital cortex that appears to support Bayesian inference by integrating the prior probability of a hypothesis with the likelihood of observed information. These results imply that parietal cortex plays a key role in Bayesian inference, supporting preposterior analysis during information-seeking in addition to Bayesian inference during categorical decision-making.
145

Information, makt och konspirationsteorier : En studie av informationskritiska användare / Information, Power and Conspiracy Theories : A Study of Critical Information Users

Heed, Malva January 2014 (has links)
Purpose–This study has examined the information behaviour and perception of information in a group ofinformation users who have a critical approach to the media and the information supply. Some of them call themselvesor are being called conspiracy theorists. The purpose was to examine how their information behaviour is influenced by the belief that the information is biased or inaccurate and what the information behaviour looks like when the user searches for discrepancies rather than a response to a question. Method–The study is based on transcribed interviews and email responses to interview questions. The model used to analyze the source material is Christine Bruceʼs seven categories of information literacy as presented in Seven Faces of Information Literacy. The outcome is compared with other user studies. Subsequently, the source material has been studied through Michel Foucaultʼs discourse theory. Focus is on power, anti-discourses and institutions. Findings–The analyses have shown that the informants have a sufficiently uniform information behaviour to be studied as a user group. Their information behaviour is focused on different strategies for evaluating information and understanding courses of events. This behaviour is based on a critical approach to what is considered as "truth" in the discourse. Originality/value–The user group has not been studied before in LIS research. Paper type–This is a two years master’s thesis in library and information science in Archive, Library and Museum studies.
146

Are Online Catalogs for Children Giving Them What They Need? Children's Cognitive Development and Information Seeking and Their Impact on Design

Creel, Stacy 08 1900 (has links)
Research shows children in an online environment often search by browsing, which relies heavily on recognition and content knowledge, so catalog systems for children must use effective symbols or pictorial representations, which correspond with children's own cognitive schema and level of recognition knowledge. This study was designed to look at the success of young children (ages 5 to 8) in searching 3 online public library catalogs designed for them, and it focused specifically on the pictorial representations and text descriptors used in the systems' browsing hierarchy. The research sought answer whether young children (ages 5 to 8) are really poor searchers because of cognitive development and lack of technology skills or if system design is the major reason for poor search results; i.e., Do current children's online catalog designs function in a manner that is compatible with information seeking by children? Although these results can not be generalized, this study indicates that there was a disconnect between the cognitive abilities of young users and catalog design. The study looked at search success on the 3 catalogs in relation to the catalog characteristics and individual user characteristics and makes 3 significant contributions to the field of library and information science. The first contribution is the modification of an existing model posed by Cooper and O'Connor and modified by Abbas (2002). The second significant contribution is the proposal of a new model, Creel's second best choice (SBC) model, that addresses the cognitive gap and design flaws that impact the choices participants made. The third significant contribution is that this study addresses and fills a gap in the literature.
147

Bridging the digital divide : Improving Internet usage in Eastern Africa

Eshetu, Sofia, Kinuthia, Caroline January 2011 (has links)
Internet is viewed as the most vital digital technology in the globe. Eastern Africa has the least penetration of ICT per capita in the world. Internet is a valuable resource that has propelled enormous economic growth in many developed countries. In order for Eastern African governments to narrow the socio-economic divide between developed countries and themselves, there is need to overcome this digital handicap. Enormous investments in ICT infrastructure are essential. The governments must participate in making crucial decisions to wisely allocate the limited resources to improve the current infrastructure.This thesis investigates Internet use, access and penetration in Eastern Africa. Theoretical research has been carried out to elaborate on the subject matter. Through empirical study, we will come up with a fresh way to verify and understand the Internet situation in the region. / Program: Magisterutbildning i informatik
148

Serious fun : life-deep learning of koi hobbyists

Liu, Chi-Chang 09 April 2012 (has links)
Hobby activities can be viewed through the lens of informal, free-choice learning. A wide range of hobbies combine fun and learning-intensive practices, and can contribute to scientific literacy. Hobby learning involves clear goal orientation, persistence and effort, and often results in more richly and strongly connected knowledge; traits highly valued in both in and out-of-school science learning. In this study, I used koi hobbyists as subjects to discover and explore hobbyists' information-seeking strategies under different learning scenarios. I approached koi hobbyists' learning about koi and their koi hobby in both quantitative and qualitative ways. I designed a Stage of Engagement Model to illustrate koi hobbyists' engagement with their hobby, and adapted Falk and Dierking's Contextual Model of Learning to explain how personal, socio-cultural and physical contextual factors affect koi hobbyists' learning. An instrument was developed to assess koi hobbyists' experience with keeping koi, knowledge about the hobby, motivation/goals, interaction with other hobbyists, and the information-seeking strategies they used under different learning scenarios. I administered this questionnaire to koi hobbyist communities in the U.S. Pacific Northwest and online. Based on the quantitative analysis, the results supported my hypotheses that koi hobbyists chose different information-seeking strategies based on personal contextual factors such as previous experience, motivation and learning goals; socio-cultural contextual factors such as interactions with other koi hobbyists; and physical contextual factors such as the nature of the problems they encounter. Koi hobbyists also chose different information-seeking strategies based upon their stage of engagement with their hobby. The long-term potential of this study is to offer insights into how learners construct their knowledge by applying different learning strategies under different personal, socio-cultural and physical circumstances, and to provide a framework for the future study of other kinds of hobbies and hobbyists that will help to promote public scientific literacy. / Graduation date: 2012
149

Valoración de las necesidades de información de los médicos: publicaciones en el periodo 1990-1998 y estudio de un caso

Gonzalez Teruel, Aurora 23 May 2000 (has links)
Los estudios de necesidades de información aportan una metodología con lo cual investigar, de manera sistemática, las características de los usuarios con relación a la información que necesitan para el desarrollo de su trabajo. Igualmente proporcionan criterios objetivos para tomar decisiones a la hora de planificar nuevos sistemas de información o adecuar los ya existentes. Esta tesis ha profundizado en los estudios de necesidades de información en el entorno hospitalario desde dos puntos de vista. Por una parte, se ha establecido un marco teórico de referencia que guíe las investigaciones en este campo. Para ello se ha buscado exhaustivamente la información publicada sobre la materia aportando el procedimiento que se ha empleado. De los trabajos recuperados, se ha realizado el análisis tanto del modo de producción y consumo como de su contenido. En segundo lugar, se ha realizado el estudio de las necesidades de información de los médicos del Hospital Clínico Universitario de Valencia utilizando como método de recogida de información la Técnica del Incidente Crítico. / Information needs studies provide a methodology to investigate, systematically, the characteristics of users in relation to the information they need to develop their work. Also it provides criteria for making decisions when planning new information systems or adapting the existing ones. This thesis focuses on information needs studies in hospital setting and has developed two complementary strategies. First, it has established a theoretical framework to guide research in this field. This has been an exhaustively searched of published information on the matter by providing the procedure to be used. Of retrieved papers, it has conducted the analysis of both production and contents. Secondly, a study has been made of the doctorâ s information needs in the Hospital Clinico Universitario in Valencia and the critical incident methodology has been used for data collection.
150

Att spara eller inte spara? : En kvantitativ enkätstudie av informationslagringssystem för vetenskapliga artiklar / To Store or Not to Store? : A Quantitative Questionnaire Survey Study about Information Storage Systems for Scholarly Articles

Häusner, Eva-Maria January 2012 (has links)
Abstract Purpose This thesis aims to focus on how master students administer scholarly articles after they have found them. The purpose of the study is to detect how and to what extent people administer their articles from a personal information management-perspective (PIM). Method To answer the research questions, a web-based questionnaire survey was distributed which was announced to around 2,000 master students from different universities in Sweden. Most of the items in the survey focused on individual storage methods. The respondents were asked to rate the frequency of their different information administration behaviors on a seven level Likert-type-scale. Subsequently, items concerning specific information administration behaviors were posed, followed by questions on the respondent's sociodemographic status. The results were based on overall 316 answers. Analysis The quantitative data was analyzed using non-parametric tests such as Friedmans-test, Kruskal-Wallis-analysis, Wilcoxon-Signed Rank-test, Mann-Whitney-U-test and Chi-square-test with the statistical computer program SPSS. Findings The findings generally confirm that the majority of the surveyed graduate students are using scholarly articles. Regarding their information management, it is as usual to store the whole article as it is to store the reference. Further it is more common to choose electronic storage methods for articles and references than to use physical methods. The results highlight that most of the students use several method types and use them to varying extent. Neither age, computer skills, duration of study or satisfaction with their way of information storage influenced the quantity of used methods. Regarding specific handling, the storing of article copies on the computer’s hard drive were most frequently used. The respondents preferred furthermore to read the articles on a screen rather than printed paper versions. The influencing factors of gender, age, computer skills, subject discipline were affecting the choice of methods. General conclusions about these influencing factors are, however, complicated by possible occurring confounders. Moreover, the method types were used to different extents depending of subject discipline. Originality/value Most previous PIM research is concentrating on how people store information in general. The dealing and administrating with specific types of information are, however, rarely discussed. In the context of scholarly articles did research predominantly focus on seeking structures and reading patterns. The step between finding and reading an article has so far not directly been addressed in academic research. The study therefore is unique in addressing information storage systems of scholarly articles on such a large scale. Knowledge about storage patterns will help journal publishers and librarians to design more targeted solutions for journal systems and improve services like courses in information seeking. Paper type Two years master’s thesis

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