ISSN:0002-8231    

DOI:10.1002/asi.4630230502

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

年代:1972

数据来源: WILEY

摘要:

AbstractThis paper is a survey of a number of issues that are concerned with information science, of importance outside the field as well as within, and generally caused by or related to changes in technology. Issues are considered in four broad categories, those concerned with computers, communications, image recording and information content. Their importance lies in the fact that how they are resolved will affect the transition of the United States from a primarily industrial to a post industrial society. The intent of the article is to present the issues and their possible impact rather than to offer solutions.

ISSN:0002-8231    

DOI:10.1002/asi.4630230503

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

年代:1972

数据来源: WILEY

摘要:

AbstractThe construction of a Universal Source Thesaurus (UST) is suggested. Unlike a universal classification, UST's main purpose would not be to serve as an indexing language to be applied directly on an universal scale but to:(a)serve as a source in the construction of special schemes;(b)serve as a concordance between a great many classification schemes, existing ones as well as new ones.The following problems arising in the planning for UST are dealt with briefly:(1)The structure of UST–UST would have to be as complete and detailed as possible.(2)The use of UST in the construction of special schemes—especially the “extraction” of special schemes.(3)The use of UST as a concordance or “switching language” between different classification schemes as a basis for cooperative cataloguing and the possibility to have special schemes common to a group of related institutions (semi‐universal classifications).(4)Organization and mana

ISSN:0002-8231    

DOI:10.1002/asi.4630230504

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

年代:1972

数据来源: WILEY

摘要:

AbstractThis paper develops a mathematical model for use in studying how to minimize the cost of operating a mechanized retrieval system. Through the use of cost analysis, the model provides a method for comparative evaluation between information retrieval systems. The cost model divides the costs of a retrieval system into two components: system costs and user costs. In addition, it suggests that a trade off exists between the performance level of the system and the combination of user and system time that is expended in working with the system. With this approach it is possible to determine the allocation of user and system. This minimizes the total cost of operating the system. This allocation is done for a given performance level and for a given cost per unit of user and system time.

ISSN:0002-8231    

DOI:10.1002/asi.4630230505

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

年代:1972

数据来源: WILEY

摘要:

AbstractSeveral bibliometric techniques previously applied to separate scientific literatures were used together in the analysis of a single corpus of journal articles relating to information science. Techniques included were (a) Bradford analysis, (b) epidemic analysis, (c) identification of research front, and (d) bibliographic coupling. Similar analysis was made of writings cited by the main corpus articles, and of the literature which in turn cites the main corpus. Results were analyzed in terms of structure and processes observable in patterns of authorship, publication, and citation. Their significance is discussed with potential application of the method to the solution of problems in the management of large research libraries.

ISSN:0002-8231    

DOI:10.1002/asi.4630230506

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

年代:1972

数据来源: WILEY

摘要:

AbstractAn on‐line serials control system with particular emphasis on storage and maintenance concepts is described. The system, operational since January, 1971, has evolved from a former batch card system and remains completely compatible with it. The system allows real‐time display and updating of all elements of the file. Consequently all check‐in, bindery, and claims operations, as well as new entries and data field changes are accomplished on a real‐time basis. All programs are in PL/1. Required equipment is an IBM time‐shared facility with 100 K memory available for the applications programs, and IBM 2260 display units.This article is the first of three. The second is concerned with an analysis of inverted file retrieval features and the third compares the operation of the on‐line with the batch system, comparable manual operations, and disc

ISSN:0002-8231    

DOI:10.1002/asi.4630230507

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

年代:1972

数据来源: WILEY

摘要:

AbstractA series of models of the interrelationship of scientific journals has been developed from the cross citing amongst 275 journals in mathematics, physics, chemistry, biochemistry, and biology. The data source was the Journal Citation Index (JCI), a file derived from the Science Citation Index. The JCI consists of a journal by journal tabulation of citings to and from each journal in the Index. A large amount of consistency was found between the citing characteristics of the journals in the different scientific fields, with quite clear boundaries between fields and a few well known cross disciplinary journals as cross field information links. The separate disciplines appear to relate to each other in an orderly manner, with a natural sequence: mathematics → physics → chemistry → biochemistry → biology. Within disciplines the journals form fully transitive hierarchies with very few relational co

ISSN:0002-8231    

DOI:10.1002/asi.4630230508

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

年代:1972

数据来源: WILEY

摘要:

AbstractPreparing decision makers for the future is discussed in terms of a three pronged approach to the teaching of document surrogation: knowledge about, skills in, and management of. The management prong should include the habit of using the data from the present situation to make decisions about future change.

ISSN:0002-8231    

DOI:10.1002/asi.4630230509

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

年代:1972

数据来源: WILEY

摘要:

AbstractIn a recent article (1) Gerard Salton considered the question of how certain retrieval parameters can be estimated for large collections from their values in small collections. The purpose of this communication is to suggest that in the situation where documents are retrieved independently the desired parameters may be estimated more accurately by sampling and averaging techniques over homogeneous subparts of the data base. It is also suggested that certain changes in the nomenclature of the parameters would help to avoid ambiguities in their interpretation.

ISSN:0002-8231    

DOI:10.1002/asi.4630230510

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

年代:1972

数据来源: WILEY

ISSN:0002-8231    

DOI:10.1002/asi.4630230512

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

年代:1972

数据来源: WILEY