bet365 best casino games A study display，For the past 40 years，The scientific diversity of the world's major developed countries and the BRICS countries basically shows an upward trend。

American Information Service Corporation Cori Wei'an official website recently released the report "Disciplinary diversity in the combination of scientific research: what is it、How to prepare indicators for it and its role in innovation。This report is part of the "Global Scientific Research Report Series"，Director of the Institute of Scientific Bet365 app download Information, the Institute of Scientific Information, a subsidiary of Ke Ruiwei、Professor Jonathan Adams and others in the Institute of Policy Research, King Institute of London, UK。Researchers entered the scientific research literature of the global citation database "Science Network" by analyzing from 1981 to 2018，Examine global Bet365 app download scientific research diversity。This database contains nearly 20,000 academic journals，Cover 254 scientific research areas。This database provides a more comprehensive data source for this study。

Report thinks，Discipline distribution of national or institutions to carry out scientific research activities reflects the diversity of scientific research。Scientific research bet365 best casino games diversity is one of the engines of economic growth，Can enhance the stability and recovery of the ecological and economic system and stimulate innovation，Therefore, it should be regarded as an important part of the scientific research system management plan。Contrary to the release of scientific research results，Analysis of Bet365 app download scientific research diversity can provide ideas、Prospective vision of technical and scientific development。1981，About 70%of the scientific research results included in the database came from the Seventh Domestic Group; and 2018，This ratio is reduced to less than 50%。

Analysis results show，The distribution uniformity of scientific research literature in various disciplines increases，bet365 Play online games Generally speaking, it is a global trend。2080s，United States、UK、The highest scientific diversity in Canada。Since then，The United States almost remains unchanged，Canadian Bet365 app download scientific research diversity rises slightly，The UK has declined to a certain extent。France、Germany、The starting level of Italy is lower than the United States、Canada、UK，But the current level gap is not large。The trend of changes in Japan and France、Germany、The same Italy，But the specific indicator level has always been lower than the above 6 countries。Chinese and South Korea's scientific research diversity was lower in the 1980s，But then significantly increased。South Korea's current scientific research diversity is slightly higher than Japan。The starting level of India is close to Japan，But the subsequent growth rate is smaller。1981-12000，Brazil's scientific research diversity significantly improves，Subsequent slowing，Now with China、India's level is similar。Russian scientific research diversity is the lowest among these countries，The change from the 1990s to the present to the present is very small。

　(Wang Youran/Compilation)