This brief research report analyzes the availability of Digital Object Identifiers (DOIs) worldwide, highlighting the dominance of large publishing houses and the need for unique persistent identifiers to increase the visibility of publications from developing countries. The study reveals that a considerable amount of publications from developing countries are excluded from the global flow of scientific information due to the absence of DOIs, emphasizing the need for alternative publishing models. The authors suggest that the availability of DOIs should receive more attention in scholarly communication and scientometrics, contributing to a necessary debate on DOIs relevant for librarians, publishers, and scientometricians.

翻译：本简短研究报告分析了全球范围内数字对象标识符的可用性，强调了大型出版商的支配地位以及通过唯一持久标识符提升发展中国家出版物可见性的必要性。研究揭示，由于缺少数字对象标识符，发展中国家的大量出版物被排除在全球科学信息流动之外，凸显了替代出版模式的必要性。作者建议，数字对象标识符的可用性应在学术交流与科学计量学领域受到更多关注，从而推动图书馆员、出版商及科学计量学家就数字对象标识符展开必要的讨论。