Literatur zur Informationserschließung

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: 28. April 2022)

Suchergebnisse

• 1
  Huang, H. ; Andrews, J. ; Tang, J.: Citation characterization and impact normalization in bioinformatics journals.
  In: Journal of the American Society for Information Science and Technology. 63(2012) no.3, S.490-497.
  
  Abstract: Bioinformatics journals publish research findings of intellectual synergies among subfields such as biology, mathematics, and computer science. The objective of this study is to characterize the citation patterns in bioinformatics journals and their correspondent knowledge subfields. Our study analyzed bibliometric data (impact factor, cited-half-life, and references-per-article) of bioinformatics journals and their related subfields collected from the Journal Citation Reports (JCR). The findings showed that bioinformatics journals' citations are field-dependent, with scattered patterns in article life span and citing propensity. Bioinformatics journals originally derived from biology-related subfields have shorter article life spans, more citing on average, and higher impact factors. Those journals, derived from mathematics and statistics, demonstrate converse citation patterns. Journal impact factors were normalized, taking into account the impacts of article life spans and citing propensity. A comparison of these normalized factors to JCR journal impact factors showed rearrangements in the ranking orders of a number of individual journals, but a high overall correlation with JCR impact factors.
  
  Themenfeld: Informetrie
  
  
• 2
  Johnson, J.D.E. ; Case, D.O. ; Andrews, J. ; Allard, S.L. ; Johnson, N.E.: Fields and pathways : contrasting or complementary views of information seeking.
  In: Information processing and management. 42(2006) no.2, S.583-592.
  
  Abstract: This research contrasts two different conceptions, fields and pathways, of individual information behavior in context. These different approaches imply different relationships between actors and their information environments and, thus, encapsulate different views of the relationship between individual actions and contexts. We discuss these different theoretical views, then empirically compare and contrast them. The operationalization of these conceptions is based on different analytic treatments of the same raw data: a battery of three questions based on respondent's unaided recall of the sources they would consult for information on inherited cancers, a particularly rich information seeking problem. These operationalizations are then analyzed in a nomological network of related concepts drawn from an omnibus survey of 882 adults. The results indicated four clusters for fields and 16 different pathways, indicating increased fragmentation of information environments, with different underlying logics and active ingredients, although the use of the Internet appears to be an emerging common theme. The analysis of the nomological network suggests that both approaches may have applications for particular problems. In the implications, we compare and contrast these approaches, discussing their significance for future methodological, analytical, and theoretical developments.
  
  Themenfeld: Suchtaktik
  
  
• 3
  Case, D.O. ; Johnson, D. ; Andrews, J.E. ; Allard, S.L. ; Kelly, K.M.: From two-step flow to the Internet : the changing array of sources for genetics information seeking.
  In: Journal of the American Society for Information Science and Technology. 55(2004) no.8, S.660-669.
  
  Abstract: The diffusion of the Internet has radically expanded the readily available sources for information of all types. Information that was once obtained second-hand from friends and acquaintances-the traditional "two-step flow"-is now found easily through the Internet. The authors make use of survey data to explore this thesis in regards to information sources about genetic testing and the influence of the Internet an the information seeking behaviors of the public. A telephone survey of a random sample of 882 adults asked them about their knowledge of, concerns about, and interest in genetic testing. Respondents were most likely to first turn to the Internet for information about cancer genetics, second to public libraries, and third to medical doctors. Overall, doctors were the most likely source to be consulted when second and third choices are considered. Age, income, and self-reported understanding of genetics are shown to be predictors of whether someone goes to medical professionals for advice, rather than to the Internet or public library. The results raise questions about the apparent tendency of the public to regard the Internet as the best source of information an complex topics like genetics, for which it may be ill-suited.
  
  
  
• 4
  Patrick, T.B. ; Sievert, M.C. ; Ries, J. ; Popescu, M. ; Andrews, J. ; Reid, J.C.: Clustering terms in health care terminologies.
  In: Knowledge: creation, organization and use. Proceedings of the 62nd Annual Meeting of the American Society for Information Science, 31.10.-4.11.1999. Ed.: L. Woods. Medford, NJ : Information Today, 1999. S.365-380.
  (Proceedings of the American Society for Information Science; vol.36)
  
  Abstract: The authors describe the development of processes and methods for user-centered access to collections of information. The implementation of this general model uses a standard terminology to represent the information collection and a set of possibly overlapping user domains to represent a social network. The goal of the implementation is to provide access to the terminology that is tailored to the needs of specific combinations of user domains. A pilot study using the Metathesaurus of the Unified Medical Language System and the user domains of consumer, radiologist, ophthalmologist, and family medicine physician was conducted by clustering terms across these domains. In three of the domains, consumer, radiologist, and ophthalmologist, we extracted terms from sources with user-warrant-- unpublished, work-related documents (e.g. clinical notes or email messages). For all four domains we extracted terms from sources with literary-warrant-- published documents (e.g. scientific journal articles or patient information pamphlets. For the clustering, the authors used a standard minimum spanning tree clustering algorithm with a weighted binary vector distance. The clustering algorithm produced clusters of quasi-synonyms and provided an alternative way to view the terms in the Metathesaurus
  
  Wissenschaftsfach: Medizin ; Pharmazie
  
  
• 5
  Lambert, J. ; Andrews, J. ; McMullan, J.: ¬The implementation of a public reservation service in a multi-site academic library.
  In: Program. 28(1994) no.4, S.367-377.
  
  Abstract: The practical issues involved in the implementation of a public reservation service using BLS (BLCMP Library System) in a large multi-site university library (University of Central England in Birmingham) service are examined. The options enabling the system to be customised are outlined, and the reasoning underlying specific decisions is explained. The effect of the new service on both staff and users is assessed and the benefits evaluated