Evaluation of the Quality of knowledge:Invalid Journals

In the last two decades, the knowledge production has been evaluated in our country quantitatively. On this base, the contribution of Iran for the knowledge production in the World has been improved from 0.02% in twenty years ago to 1.20% in the last year. Now, the quantitative of knowledge production has been a large measure to be enough for evaluating quantitatively. Evaluation of the quality of knowledge can be drawn in two points of view: Evaluation number and type of global citations to our country publications, and evaluation of journals which have been selected for publishing of our documents. In this article, a number of journals which have been selected for publishing of our documents were reviewed as well as invalid and less valid scientific journals were introduced. This article helps researchers and research programmers to improve the quality of knowledge in our country.