摘要:

AbstractThe concept of the journal is reexamined in the light of current computer‐communications technology. Four forms of electronic journals on the Electronic Information Exchange System (EIES) are described as divergent examples of potential journal forms that could become prominent in the future. These are (1) an informal newsletter, (2) an unrefereed “Paper Fair, “ (3) a journal which replicates the traditional print‐based system, and (4) a highly structured inquiry‐response system. The economic imperatives which will force the replacement of current print‐based journals are reviewed. It is predicted that the next few decades will witness the emergence of networks of small computer systems dedicated to dispersed journal functions and under the control of the primary communities responsible for the creation of the

ISSN:0002-8231    

DOI:10.1002/asi.4630330402

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

年代:1982

数据来源: WILEY

摘要:

AbstractThe information policies of developing and industrialized countries are created to protect the vital interests of the country. Brazil is used to illustrate various policies regulating information transfer, computer hardware, and computer software. Brazil's policies are compared with the policies of industrialized countries. The analysis illustrates some of the tradeoffs faced by information policymakers and planners in a developing country.

ISSN:0002-8231    

DOI:10.1002/asi.4630330403

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

年代:1982

数据来源: WILEY

摘要:

AbstractA preliminary investigation was conducted to explore which characteristics of citing and cited works may aid in determining relatedness between documents. Thirteen variables were tested on 31 library/information science articles containing nearly 500 citations. Analysis indicates that source of cited work, source of citing work, number of times a work is cited in text, and type of citing article show promise of predicting relatedness between citing and cited works.

ISSN:0002-8231    

DOI:10.1002/asi.4630330404

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

年代:1982

数据来源: WILEY

摘要:

AbstractA simulation language is presented which lends itself to the modeling of library operations. Here a circulation department of a university library is modeled using Integrated Network System (INS) language. The public demands on the resources are measured as are a 10 and 20% increase in the demand. The resulting data are used by management to determine the efficiency of a network and to predict manpower needs.

ISSN:0002-8231    

DOI:10.1002/asi.4630330405

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

年代:1982

数据来源: WILEY

摘要:

AbstractA Zipfian model of an automatic bibliographic system is developed using parameters describing the contents of Its database and its inverted file. The underlying structure of the Zipf distribution is derived, with particular emphasis on its application to work frequencies, especlaiiy with regard to the inverted files of an automatic bibliographic system. Andrew Booth developed a form of Zipf's law which estimates the number of words of a particular frequency for a given author and text. His formulation has been adopted as the basis of a model of term dispersion in an inverted file system. The model is also distinctive in its consideration of the proliferation of spelling errors in free text, and the inclusion of all searchable elements from the system's Inverted file. This model is applied to the National Library of Medicine's MEDLINE. The model carries implications for the determination of database storage requirements, search response time, and search exhaustiveness.

ISSN:0002-8231    

DOI:10.1002/asi.4630330406

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

年代:1982

数据来源: WILEY

摘要:

AbstractCited documents are concept symbols, that Is, authors cite works which embody ideas they discuss in their papers. Many documents are standard symbols for a single concept, but others are used in connection with multiple concepts. This study, which reviews such a case, reveals the cause of split citation identity: the use of the same document by different networks of researchers. In this case study, citations to a 1948 paper by Lawrence Klein and Herman Rubin are analyzed. The paper introduced the linear expenditure system. In the period 1975–1977, it was being used in connection with two different phrases and two different bibliographic references by two networks of researchers, one dealing with consumer demand systems and the other with the extended linear expenditure system. This article discusses the implications of split citation identity for the analysis of citations to individual article

ISSN:0002-8231    

DOI:10.1002/asi.4630330407

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

年代:1982

数据来源: WILEY

摘要:

AbstractMajor areas of videodisc systems technology are Identified and briefly described. The operation, reliability, storage capacities, and applications of two laser systems are presented in detail. These systems include (1) the consumer optical videodisc used in the distribution of films and tutorial types of educational programs and (2) the high‐density storage optical digital disc used for both digital and image storage. The versatility of the optical digital disc is illustrated by its capabilities to digitize a large collection of bibliographic data and to image process the full text of energy documents. The development and application of videodiscs is one of several technologies that will have a profound Impact on our society. It is one of the first major areas of modern consumer electronics in which the U.S. has assumed a dominant role. As advances in this field are made, possibilities of new methodologies in information storage and retrieval will evolv

ISSN:0002-8231    

DOI:10.1002/asi.4630330408

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

年代:1982

数据来源: WILEY

摘要:

AbstractThis article presents a method for identifying good indexing terms from frequently occurring stems. The method uses discriminant analysis to distinguish terms that refer to topics from general terms that do not refer to topics. The steps in the method are the selection of discriminating variables, the calibration of predefined groups and the derivation of discriminant functions from them, and the classification of a second, unknown set of terms and its evaluation. The method is tested by applying it to the Harris Survey Question database, which covers 121 different surveys and includes the text of over 12, 000 Individual questions. The evaluation demonstrates the success of the method.

ISSN:0002-8231    

DOI:10.1002/asi.4630330409

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

年代:1982

数据来源: WILEY

ISSN:0002-8231    

DOI:10.1002/asi.4630330410

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

年代:1982

数据来源: WILEY

ISSN:0002-8231    

DOI:10.1002/asi.4630330401

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

年代:1982

数据来源: WILEY