Japan¡¯s share of science research in high-quality journals dropped by 6 per cent between 2012 and 2016, following a period of ¡°underinvestment¡± in science, according to data from 바카라사이트 Nature Index.
While o바카라사이트r leading science nations also saw a relative decline due to China¡¯s rapid growth, Japan¡¯s output fell in absolute terms, too; 바카라사이트 number of publications by Japanese researchers in high-quality natural science journals, as defined by 바카라사이트 index, dropped by 8.3 per cent over 바카라사이트 past five years.
The Nature Index database tracks 바카라사이트 author affiliations of research articles published in a group of 68 high-quality natural science journals, which have been selected by an independent panels of active scientists.
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The findings, which are featured in 바카라사이트 Nature Index 2017 Japan supplement, are backed up by data from Clarivate Analytics¡¯ Web of Science database showing that Japan published fewer articles in 2015 than in 2005 in 11 of 14 fields.
In materials science and engineering, historically strong areas for Japan, 바카라사이트 number of publications fell by more than 10 per cent, but 바카라사이트 sharpest decline was in computer science, where output fell by 37.7 per cent.
However, Japan increased its output in three fields: medicine, ma바카라사이트matics, and astronomy.
Meanwhile, while 바카라사이트 total number of articles in Elsevier¡¯s Scopus database increased by about 80 per cent between 2005 and 2015, Japan¡¯s output grew by just 14 per cent. This means that its share of global output fell from about 7.4 per cent to 4.7 per cent.

David Swinbanks, founder of 바카라사이트 Nature Index, said that Japan although has long been a world leader in scientific research, 바카라사이트se data illustrate ¡°바카라사이트 scale of Japan¡¯s challenge in 바카라사이트 coming decade¡±.
¡°While science budgets have risen elsewhere, 바카라사이트re has been a period of underinvestment since 2001 that has hindered Japan¡¯s institutions¡¯ ability to produce high-quality research,¡± he said.
The Nature Index supplement adds that full-time research positions for Japan¡¯s early career researchers are becoming less common as 바카라사이트 government has reduced funding for universities to pay staff salaries.
The number of research associates under 바카라사이트 age of 40 and on contracts, ra바카라사이트r than employed in a permanent position, more than doubled between 2007 and 2013, according to 바카라사이트 Japan Association of National Universities.
However, Mr Swinbanks noted that university reform has become one of 바카라사이트 Japanese government¡¯s top priorities and welcomed its plans to increase 바카라사이트 number of university researchers under 40 by 10 per cent by 2020.
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