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|
|BMJ Journals Online Archive||6||2||4||33.3||66.7|
|Edinburgh University Press||3||0||3||0.0||100.0|
|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|
|Oxford University Press Journals||51||11||40||21.6||78.4|
|SAGE Communication Studies Full Text Collection||19||0||19||0.0||100.0|
|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It should be recognized that just because a title appears in LOCKSS, it does not mean that every relevant article has been archived.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.