Group items tagged

We used the databases of ISI and Ulrich's as our primary sources and estimate that the total number of articles published in 2006 by 23 750 journals was approximately 1 350 000.\nUsing this number as denominator it was also possible to estimate the number of articles which are openly available on the web in primary OA journals (gold OA). This share turned out to be 4.6 % for the year 2006. In addition at least a further 3.5 % was available after an embargo period of usually one year, bringing the total share of gold OA to 8.1%\nUsing a random sample of articles, we also tried to estimate the proportion of the articles published which are available as copies deposited in e-print repositories or homepages (green OA). Based on the article title a web search engine was used to search for a freely downloadable full-text version. For 11.3 % a usable copy was found. Combining these two figures we estimate that 19.4 % of the total yearly output can be accessed freely.

search engine evaluating social sharing content (via Joe Esposito)

LexiURL Searcher automatically analyses the impact of collections of documents or web sites, and creates network diagrams of collections of web sites. It automatically submits queries to search engines and process the results.

WorldWideScience.org, a federated full-text database of scientific and technical research information published at least 70 cooperative countries, providing access to millions of deep web documents with only about a 4% overlap with general public search engines.

via Hacker News