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1993
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.
A general method of constructing the discrete models for the Boltzmann equation is suggested. This method allows us to get the discrete models which approximate the Boltzmann equation in any bounded domain of the velocity space and preserve the main properties of this equation-the conservation laws and H-theorem. Three different types of discrete models, depending on the kind of the differential collision cross-section, are considered.