Worldwide use and impact of the NASA astrophysics data system digital library
Worldwide use and impact of the NASA astrophysics data system digital library
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DOI：
10.1002/asi.20095
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发表时间：
2005-01-01
影响因子：
--
通讯作者：
Murray, SS
中科院分区：
文献类型：
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作者：
Kurtz, MJ;Eichhorn, G;Murray, SS
NASA天体物理数据系统（ADS），沿着天文学期刊和数据中心（一个被称为URANIA的合作项目），已经开发了一个分布式在线数字图书馆，它已经成为天文学家搜索、访问和阅读他们的技术文献的主要手段。数字图书馆可以很容易地积累一种新型的文献计量学指标：电子访问（“阅读”）个别文章的数量。通过将来自文本、引文和参考文献数据库的数据与来自ADS读者日志的数据相结合，我们已经能够创建二阶文献计量算子，这是一种可定制的协作过滤器，可以大大提高文献查询的准确性。利用ADS使用日志沿着来自国际天文学联合会的会员统计数据以及人口和国内生产总值（GDP）数据，我们开发了一个全球基础研究的精确模型，其中一个国家的科学家人数与该国的GDP成正比，一个国家完成的基础研究数量与该国科学家数量乘以该国人均GDP成正比。我们引入效用时间的概念来衡量ADS/URANIA和电子天文图书馆对天文学研究的影响。我们发现，在2002年，它相当于736名全职研究人员，或2.5亿美元，或法国完成的天文研究。
The NASA Astrophysics Data System (ADS), along with astronomy's journals and data centers (a collaboration dubbed URANIA), has developed a distributed online digital library which has become the dominant means by which astronomers search, access, and read their technical literature. Digital libraries permit the easy accumulation of a new type of bibliometric measure: the number of electronic accesses ("reads") of individual articles. By combining data from the text, citation, and reference databases with data from the ADS readership logs we have been able to create second-order bibliometric operators, a customizable class of collaborative filters that permits substantially improved accuracy in literature queries. Using the ADS usage logs along with membership statistics from the International Astronomical Union and data on the population and gross domestic product (GDP), we have developed an accurate model for worldwide basic research where the number of scientists in a country is proportional to the GDP of that country, and the amount of basic research done by a country is proportional to the number of scientists in that country times that country's per capita GDP. We introduce the concept of utility time to measure the impact of the ADS/URANIA and the electronic astronomical library on astronomical research. We find that in 2002 it amounted to the equivalent of 736 full-time researchers, or $250 million, or the astronomical research done in France.