Abstract
This paper presents the results of a study on the open archives in developing countries. It provides the elements of type, size and contents of open archives. The methodology is based on information collected from open repository websites. The survey is based on an almost exhaustive sample list of developing countries websites retrieved from directories and a list of open repositories. The purpose of this study, carried out from 2011 up to now, is to measure, at a second level, the impact of open access on the Algerian researchers by analyzing their practices related to open access, through the identification of their scientific publications at a second level in the open archives, in which they can deposit.