Diese Datenbank enthält über 40.000 Dokumente zu Themen aus den Bereichen Formalerschließung – Inhaltserschließung – Information Retrieval.
© 2015 W. Gödert, TH Köln, Institut für Informationswissenschaft / Powered by litecat, BIS Oldenburg (Stand: 23. Dezember 2017)
1Lu, T. ; Xu, Y.(C.) ; Wallace, S.: Internet usage and patient's trust in physician during diagnoses : a knowledge power perspective.
In: Journal of the Association for Information Science and Technology. 69(2018) no.1, S.110-120.
Abstract: Does patients' Internet search of disease information affect their trust in physicians during diagnosis? This study proposes a research model from a knowledge power perspective, that is, Internet search affects patients' perception of their knowledge level. Our empirical study of more than 400 subjects suggests that for patients who searched online for disease information, the inconsistency between their self-diagnosis expectations and their physician's diagnosis reduces their trust in their physician. The effect is stronger for those who spent more time on Internet search. Patients with chronic conditions are less affected by the inconsistency, as are patients of physicians with a higher professional status. This study also found that physicians' interaction quality in the diagnosis process-how well they communicate with their patient-still plays a dominant role in gaining patient's trust. This finding suggests that even in the high-tech age, high-touch remains an important factor to physician-patient trust.
Inhalt: Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23920/full.
2Wang, X. ; Hong, Z. ; Xu, Y.(C.) ; Zhang, C. ; Ling, H.: Relevance judgments of mobile commercial information.
In: Journal of the Association for Information Science and Technology. 65(2014) no.7, S.1335-1348.
Abstract: In the age of mobile commerce, users receive floods of commercial messages. How do users judge the relevance of such information? Is their relevance judgment affected by contextual factors, such as location and time? How do message content and contextual factors affect users' privacy concerns? With a focus on mobile ads, we propose a research model based on theories of relevance judgment and mobile marketing research. We suggest topicality, reliability, and economic value as key content factors and location and time as key contextual factors. We found mobile relevance judgment is affected mainly by content factors, whereas privacy concerns are affected by both content and contextual factors. Moreover, topicality and economic value have a synergetic effect that makes a message more relevant. Higher topicality and location precision exacerbate privacy concerns, whereas message reliability alleviates privacy concerns caused by location precision. These findings reveal an interesting intricacy in user relevance judgment and privacy concerns and provide nuanced guidance for the design and delivery of mobile commercial information.
3Zhang, C. ; Liu, X. ; Xu, Y.(C.) ; Wang, Y.: Quality-structure index : a new metric to measure scientific journal influence.
In: Journal of the American Society for Information Science and Technology. 62(2011) no.4, S.643-653.
Abstract: An innovative model to measure the influence among scientific journals is developed in this study. This model is based on the path analysis of a journal citation network, and its output is a journal influence matrix that describes the directed influence among all journals. Based on this model, an index of journals' overall influence, the quality-structure index (QSI), is derived. Journal ranking based on QSI has the advantage of accounting for both intrinsic journal quality and the structural position of a journal in a citation network. The QSI also integrates the characteristics of two prevailing streams of journal-assessment measures: those based on bibliometric statistics to approximate intrinsic journal quality, such as the Journal Impact Factor, and those using a journal's structural position based on the PageRank-type of algorithm, such as the Eigenfactor score. Empirical results support our finding that the new index is significantly closer to scholars' subjective perception of journal influence than are the two aforementioned measures. In addition, the journal influence matrix offers a new way to measure two-way influences between any two academic journals, hence establishing a theoretical basis for future scientometrics studies to investigate the knowledge flow within and across research disciplines.
4Agarwal, N.K. ; Xu, Y.(C.) ; Poo, D.C.C.: ¬A context-based investigation into source use by information seekers.
In: Journal of the American Society for Information Science and Technology. 62(2011) no.6, S.1087-1104.
Abstract: An important question in information-seeking behavior is where people go for information and why information seekers prefer to use one source type rather than another when faced with an information-seeking task or need for information. Prior studies have paid little attention to contingent variables that could change the cost-benefit calculus in source use. They also defined source use in one way or the other, or considered source use as a monolithic construct. Through an empirical survey of 352 working professionals in Singapore, this study carried out a context-based investigation into source use by information seekers. Different measures of source use have been incorporated, and various contextual variables that could affect the use of source types have been identified. The findings suggest that source quality and access difficulty are important antecedents of source use, regardless of the source type. Moreover, seekers place more weight on source quality when the task is important. Other contextual factors, however, are generally less important to source use. Seekers also demonstrate a strong pecking order in the use of source types, with online information and face-to-face being the two most preferred types.
5Xu, Y.(C.) ; Tan, C.Y.(B.) ; Yang, L.: Who will you ask? : an empirical study of interpersonal task information seeking.
In: Journal of the American Society for Information Science and Technology. 57(2006) no.12, S.1666-1677.
Abstract: Information seeking behavior is an important form of human behavior. Past literature in information science and organizational studies has employed the cost-benefit framework to analyze seekers' information-source choice decision. Conflicting findings have been discovered with regard to the importance of source quality and source accessibility in seekers' choices. With a focus on interpersonal task information seeking, this study proposes a seeker-source-information need framework to understand the source choice decision. In this framework, task importance, as an attribute of information need, is introduced to moderate seekers' cost-benefit calculation. Our empirical study finds that in the context of interpersonal task information seeking, first, the least effort principle might not be adequate in explaining personal source choices; rather, a quality-driven perspective is more adequate, and cost factors are of much less importance. Second, the seeker-source relationship is not significant to source choices. Third, the nature of information need, especially task importance, can modify seekers' source choice decisions.