Assessing the coverage by LOCKSS of subscription journals

A previous post looked at the count of Open Access journals being preserved in the De  Montfort University LOCKSS service. The figure came out as 27% of LOCKSS titles being represented in the Directory of Open Access Journals.

It may be worth looking at the figures for subscribed journals as well. To do this I used the same SFX Collection Tool to look at the overlap between activated LOCKSS titles and packages of journals where a subscription is required.

Num. of Titles Unique Title Overlap % Unique Titles % Title Overlap
Set 1 676 384 292 56.8 43.2
LOCKSS 676 384 292 56.8 43.2
Set 2 763 471 292 61.7 38.3
BMJ Journals Online Archive 6 2 4 33.3 66.7
Edinburgh University Press 3 0 3 0.0 100.0
Emerald Current 62 43 19 69.4 30.6
Emerald Management Xtra 111 162 77 85 47.5 52.5
Highwire Press American Association for Cancer Research 3 1 2 33.3 66.7
Highwire Press American Association of Immunologists 1 1 0 100.0 0.0
Highwire Press American Speech Language Hearing Association 6 6 0 100.0 0.0
Highwire Press Journals 28 13 15 46.4 53.6
Highwire Press University of Wisconsin Press 1 1 0 100.0 0.0
MetaPress Journals 17 13 4 76.5 23.5
Miscellaneous Ejournals 106 105 1 99.1 0.9
Oxford University Press Journals 51 11 40 21.6 78.4
Portland Press 2 1 1 50.0 50.0
SAGE Communication Studies Full Text Collection 19 0 19 0.0 100.0
SAGE Complete 114 29 85 25.4 74.6
Springer Complete Collection 94 93 1 98.9 1.1
Taylor & Francis Journals Complete 142 106 36 74.6 25.4

In Set 1 there are the 676 titles archived in LOCKSS and a reported 43.2% match between these and the titles collected from a variety of publishers in set 2. The second set does not list all the subscriptions taken at DMU, so one should be wary of concluding that 38.3% of such material is archived in LOCKSS. The main interest in this report is in the lines for each publisher and their coverage in LOCKSS.

  • Title coverage is complete for Edinburgh University Press and the Sage Communication Studies package.
  • Title coverage is at 50% or over for BMJ, Emerald Management Xtra, American Association for Cancer Research, Highwire Press, OUP, Portland Press and Sage Complete.
  • Title coverage is low for Miscellaneous Ejournals and Springer.

It should be recognized that just because a title appears in LOCKSS, it does not mean that every relevant article has been archived. There is further work to be done on examining the range of extent of LOCKSS Archival Units for each selected title.

There are also more titles in LOCKSS not included in this or the DOAJ report, so these will still need to be identified before a full picture of LOCKSS coverage at DMU can be determined.

 

About Philip Adams

Senior Assistant Librarian at De Montfort University. I have recently introduced a Single Sign On service for the library's databases and electronic journals. I am interested in digital preservation and the use of data to measure a library's impact. All comments own.
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