CNKI Partners with NAS on Publications Indexing

A partnership between China Academic Journals (CD Edition) Electronic Publishing House Co., Ltd (CNKI) and the National Academy of Sciences of the United States (NAS) launched in late October 2020. Through an agreement of metadata licensing, NAS series publications, Proceedings of the National Academy of Sciences of the United States of America (PNAS), and thousands of titles of e-books published by the National Academies Press (NAP), will be indexed at CNKI series platforms.

The NAS was established by an Act of Congress, signed by President Abraham Lincoln in 1863. Membership in NAS is a widely accepted mark of excellence in science and is considered one of the highest honors that a scientist can receive.

PNAS, the official journal of the NAS, is an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences. The journal is global in scope and submission is open to all researchers worldwide.

PNAS was established in 1914 in honor of the semi-centennial anniversary of the NAS. Since then, PNAS has worked to publish only the highest quality scientific research and to make that research accessible to a broad audience. In addition, PNAS publishes science news, Commentaries, Perspectives, Colloquium Papers, podcasts, and profiles of NAS members. PNAS is one of the most cited and comprehensive multidisciplinary research journals in the world.

  • Articles published daily and issues published weekly
  • H5 index 228
  • CiteScore 15.7
  • Impact factor of 9.41 for 2019
  • 5-year impact factor of 10.6
  • Immediacy Index 1.957
  • Eigenfactor of 0.931 for 2019
  • Article Influence 4.448
  • SNIP 2.689
  • Cited half-life 10 years
  • Average period of peer review 45 days
  • 37% of authors' articles are open access in 2019
  • Research articles are free six months after publication
  • Nearly 26,000 pages of high-impact research published in 2019
  • Over 3,200 research articles published in 2019, with over 12 million monthly visits (articles)
  • 77% of readers are from universities with doctoral programs
  • Free online access in 124 developing countries

The PNAS Editorial Board is comprised of members of the NAS. Over the past hundred years, PNAS has published several ground-breaking works, such as: A Relation between distance and radial velocity among extra-galactic nebulae by Edwin Hubble in 1929, Proof of the Quasi-Ergodic Hypothesis by J.v. Neumann in 1932, Equilibrium points in n-person games by John Nash in 1950, Some functional effects of sectioning the cerebral commissures in man by Michael S. Gazzaniga et al. in 1962, Spliced segments at the 5‘ terminus of adenovirus 2 late mRNA by Phillip Allen Sharp et al. in 1977, Transforming gene product of Rous sarcoma virus phosphorylates tyrosine by Tony Hunter et al. in 1980.

Before 2010, the percentage of published content by Chinese authors was less than 4% in PNAS; however, the number increased continuously over the following decade. According to the latest statistics, in the last three years, papers from China have steadily ranked third in number in PNAS, surpassing Germany, France, Canada, and the Netherlands. PNAS is one of the best options for outstanding Chinese scholars to publish their research accomplishments; meanwhile, it is an indispensable source of information for global researchers.

In this cooperation, NAS authorizes CNKI to index all articles of PNAS including its full archives by working on metadata. CNKI series platforms are continually dedicated to promoting dissemination of the world's top research journals and academic communications in China.

The National Academies Press (NAP) is the official publishing institution for the National Academies of Sciences, Engineering, and Medicine. It consists of eight divisions, including Behavioral and Social Sciences and Education, Earth and Life Studies, Engineering and Physical Sciences, Gulf Research Program, Health and Medicine, National Academy of Engineering, Policy and Global Affairs, and Transportation Research Board.

Over decades, NAP has earned a solid reputation as being a vital platform for American scientists to share academic research and opinions in the fields of scientific research and public policy. The NAP publishes more than 200 books a year on a wide range of topics in science, engineering, and medicine, providing authoritative, independently-researched information on important matters in science and health policy. It authorized CNKI to index more than 6,000 titles of its publications as the very first bunch via metadata sharing. For readers, the great majority of these titles are free to read online or download on the NAP website.

CNKI Scholar, an open academic discovery platform, was initiated by CNKI in 2008. It integrates various international academic resources to provide readers at home and abroad with open retrieval and browsing of abstracts and full text-oriented services based on copyright cooperation. Currently, CNKI Scholar is in partnership with more than 800 institutions worldwide, including over 75 thousand international journals and 100 million articles in its indexing system. The international content of CNKI Scholar has now fully entered the CNKI new platform--Global Academic Focus (GAF), which provides one-stop retrieval and discovery of massive Chinese and foreign academic resources with cross-language technology.