Ikuko Tsuchide et al. have published "Hita-Hita: Open Access and Institutional Repositories in Japan Ten Years On" in the latest issue of Ariadne.
Here's an excerpt:
This article introduces several ideas and projects that have enhanced the penetration of the OA movement and development of institutional repositories in Japan. Moreover, it also outlines the activities of Digital Repository Federation (DRF), a repository managers' community made up of 145 universities and research institutions that has supported such ideas. The term 'hita-hita' means to be tenacious, persevering and to work step by step without giving up. We adopt the term as the title of this article as we believe 'hita-hita' accurately expresses the character of our continued activity in this area.