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1991
It is built from checkable properties of the record itself: whether the article has a DOI, how many independent sources confirmed its data, whether the required fields are filled in, and how recent the latest confirmation is. Disagreement between sources and a missing identifier lower it. A value of 80 or above means the record was published without further checking; 60 to 79 means it is published at reduced confidence, with a manual check advisable. A record verified by an editor by hand is never pushed below 90 by a recalculation. This scores our data about the article, not the article itself.
Within the model of QCD vacuum as an instanton liquid the parametrization of the sea quark structure functions in the proton is obtained. A new mechanism of heavy quark production is suggested. It is shown that the J/Ψ suppression as well as ϕ enchancement observed experimentally in AA-collisions can be explained within the non-perturbative mechanism.