Abstract and Index Services in the Pharmaceutical Field

Sewell, Winifred; A, McCann; Kelly, I

doi:10.1021/ba-1956-0016.ch022

Cited by 2 publications

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“…The first modern attempt at development of an overlap theory and the analysis of journal coverage overlap was done by Martyn in the mid-1960s (Martyn, 1964, 19673. Other studies (Bradford, 1937;Glass, 1955;Himwich, Field, Garfield, Whittock, & Larkey, 1954;Orr & Crouse, 1962;Sewell & McCann, 1956;UNESCO, 1962) preceded Martyn's but none covered as many subject areas or presented as theoretical a framework. Martyn outlined a naive theory of journal coverage overlap and presented several case studies of secondary sources.…”

Section: Initial Research Period and Resultsmentioning

confidence: 99%

A review of journal coverage overlap with an extension to the definition of overlap

Gluk

1990

J. Am. Soc. Inf. Sci.

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This investigation reviews the research into journal coverage overlap of the secondary literature indicating the uneven development in this research during the past 30 years and introduces a prototype extension to the traditional definition of overlap. The products of abstracting or indexing services are referred to as secondary sources. Journal coverage overlap (traditional overlap) has been classically defined as the ratio of the number of either journal titles or articles in the intersection of two secondary sources to the number in their union. The extension to the classical definition proposed begins with this traditional definition and proceeds to incorporate the relative sizes of the sources into a matrix of dissimilarity values. Matrices for both the traditional definition and its extension are computed for two universes of secondary source ensembles. These matrices are formed by comparing all possible unions of sources in a universe of secondary sources. Multidimensional scaling analysis is applied to graphically demonstrate this modified concept of coverage overlap and a naive secondary tool selection algorithm is presented. © 1990 John Wiley & Sons, Inc.

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Section: Initial Research Period and Resultsmentioning

confidence: 99%

A review of journal coverage overlap with an extension to the definition of overlap

Gluk

1990

J. Am. Soc. Inf. Sci.

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Secondary publication in cardiovascular, endocrine and psychopharmacologic research

Orr¹,

Crouse²

1962

Amer. Doc.

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In a follow‐up of earlier studies, Biological Abstracts (BA), Chemical Abstracts (CA), Excerpta Medica (EM), Psychological Abstracts (PA) and Current List of Medical Literature (CL) were searched for 240 published articles that resulted from oral research reports given at bio‐medical meetings in 1957 and 1958. Seventy per cent of the 240 papers appeared in at least one of the four abstracting services, and almost 90% were indexed in CL; however, no single abstracting service covered more than about one‐half of all the papers in any of the three research fields. The average time‐lag between primary and secondary publication for cardiovascular and endocrine papers was about four months in CL, four in CA, six in BA, and eight to ten months in EM. For psychopharmacologic papers, all of the services were slower. This “tracer” technique makes possible and practical a continuous assessment of how a given research field is being served by abstracting and indexing services.

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Abstract and Index Services in the Pharmaceutical Field

Cited by 2 publications

References 0 publications

A review of journal coverage overlap with an extension to the definition of overlap

A review of journal coverage overlap with an extension to the definition of overlap

Secondary publication in cardiovascular, endocrine and psychopharmacologic research

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