摘要:

AbstractTwo trends, the growth of interdisciplinary research and the proliferation of machine‐readable data bases, require that new techniques and tools be applied to facilitate use of scientific and medical literature in support of research. In order to permit systematic searching of multiple data bases to satisfy requests in interdisciplinary areas, a mapping of a portion of Medical Subject Headings (MeSH) to three other controlled vocabularies has been constructed. A description of the development of the mapping is followed by details of a preliminary test of its effectiveness based on searches in the subject areas of applications of physics and engineering in medicine. The test shows: (1) Index Medicus provides an average of 81% of the citations retrieved in searches using more than one source; (2) in some subject areas use of the mapping does allow an increase in the number of items retrieved, but with a loss in precision. Limitations of the mapping revealed by the test suggest possible alternative applications of the mapping in controlled vocabulary development and in on‐line search

ISSN:0002-8231    

DOI:10.1002/asi.4630250602

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1974

数据来源: WILEY

摘要:

AbstractThis paper considers the optimal storage of books by size in libraries. A network model is developed to determine the optimum number of shelf heights to use which will minimize the shelving cost for a given collection of books. The model is analyzed and solved by a well known operations research technique of finding the shortest path in a directed network. Results of an experimental study to apply this model to a sample collection of books from the Purdue University Library are discussed.

ISSN:0002-8231    

DOI:10.1002/asi.4630250603

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1974

数据来源: WILEY

摘要:

AbstractA mathematical model is presented that can be used to predict a library's circulation. Variables considered include changing user population, decreasing demand for older items in the collection, purchasing and circulation policies, weeding and other losses, and inflation. The model requires little data other than what libraries normally collect. An example of applying the model to a particular library is discussed. Possible extensions of the model are noted.

ISSN:0002-8231    

DOI:10.1002/asi.4630250604

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1974

数据来源: WILEY

摘要:

AbstractOn‐line interactive searching of several information bases through several service operators was introduced in an industrial research environment. Thorough knowledge of the information base and its structure in the search system is a major factor for successful searching, and differences among search systems do not present serious barriers. This new technique was most effectively used when the information specialist and the scientist searched as a team. On‐line searching is now an established search tool at Exxon Research and Engineering Comp

ISSN:0002-8231    

DOI:10.1002/asi.4630250605

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1974

数据来源: WILEY

摘要:

AbstractThe terms from 228 individual SDI profiles of 104 research chemists were matched against the citations retrieved by these profiles in eight consecutive runs of Basic Journal Abstracts to determine the number of citations that would have been retrieved for each individual user if titles only had been searched. Computing the data as a ratio of title hits to total hits, the mean percentage of retrieval of citations if only titles are searched when compared with searching of titles and abstract text was 27.0%. This represents an average loss of 73% of the potential output to the individual SDI user. One can expect a higher level of retrieval by titles alone if only a single term is required for a match than in searches requiring more than one term to be present to constitute a match (39% compared with 16.8% in this study).

ISSN:0002-8231    

DOI:10.1002/asi.4630250606

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1974

数据来源: WILEY

ISSN:0002-8231    

DOI:10.1002/asi.4630250607

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1974

数据来源: WILEY

摘要:

AbstractEmerging networks are classified in a variety of ways in current literature. The proposed framework distinguishes between computer, communication, and information networks and indicates how these three network types can be used to augment each other.

ISSN:0002-8231    

DOI:10.1002/asi.4630250608

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1974

数据来源: WILEY

ISSN:0002-8231    

DOI:10.1002/asi.4630250610

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1974

数据来源: WILEY

ISSN:0002-8231    

DOI:10.1002/asi.4630250611

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1974

数据来源: WILEY

ISSN:0002-8231    

DOI:10.1002/asi.4630250613

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1974

数据来源: WILEY