> From: Alastair Dryburgh > Sent: Wednesday, October 01, 2003 04:00 > To: Sally Morris > Subject: Protocols for Metadata Harvesting > > I continue to think about things like ParaCite being a catalyst in the move > towards open access. Are you aware of any estimates of how much of the > recent literature is available in published or almost-as-published form > outside the subscription wall ?
Dear Alastair, The percentage of the annual literatire that is openly accessible varies from field to field. In High Energy Physics it is 100% and in chemistry it is near 0%. There are about 2,500,000 articles published in 24,000 refereed journals acrosss all fields and languages each year. Of this total, about 10% is available as full-text for free online. Of that 10% about 2.5% gets there via open-access journals and the remaining 7.5% via author open-access self-archiving. http://www.ecs.soton.ac.uk/~harnad/Temp/self-archiving_files/Slide0024.gif Cheers, Stevan On Wed, 12 Nov 2003, Alastair Dryburgh wrote: > Stevan > > Sally Morris suggested you would be the best person to answer the question I > had below. > > Your best estimate ? > > Best wishes > > Alastair Dryburgh > www.alastairdryburgh.co.uk
