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arXiv physics/0502083physics.soc-ph
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科学产出增长动力学中的标度现象

Scaling Phenomena in the Growth Dynamics of Scientific Output

Kaushik Matia, Luis A. Nunes Amaral, Marc Luwel, Henk. F. Moed, H. Eugene Stanley

摘要:

我们分析了一组三个数据库在不同层次的聚合(i)数据库的大约$10^6$出版物的247个国家在1980年至2001年期间。(ii)一个数据库的508个学术机构从欧盟(欧盟)和408个机构从美国在11年期间,在1991年至2001年。(iii)一个数据库,包括1980- 2000年期间的2 330名佛兰德作家。我们发现,在各级汇总中,出版物的平均年增长率与所涉各单位的出版物数量无关。我们还发现,年增长率的分布的标准差与出版物的数量作为一个指数$\approx 0.3$的幂律衰减。这些发现与最近对各国R&D经费预算规模、美国大学研究出版物数量、企业规模等系统的研究结果一致。

英文摘要:

We analyze a set of three databases at different levels of aggregation (i) a database of approximately $10^6$ publications of 247 countries in the period between 1980--2001. (ii) A database of 508 academic institutions from European Union (EU) and 408 institutes from USA in the 11 year period between during 1991--2001. (iii) A database comprising of 2330 Flemish authors in the period 1980--2000. At all levels of aggregation we find that the mean annual growth rates of publications is independent of the number of publications of the various units involved. We also find that the standard deviation of the distribution of annual growth rates decays with the number of publications as a power law with exponent $\approx 0.3$. These findings are consistent with those of recent studies of systems such as the size of R&D funding budgets of countries, the research publication volumes of US universities, and the size of business firms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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