Trends and patterns in research and development expenditures in the United States
This paper is a review of recent trends in United States expenditures on research and development (R&D). Real expenditures by both the government and the private sector increased rapidly between the mid-1970s and the mid-1980s, and have since leveled off. This is true of both overall expenditures an...
保存先:
| 出版年: | Proc Natl Acad Sci U S A |
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| 第一著者: | |
| フォーマット: | Artigo |
| 言語: | Inglês |
| 出版事項: |
National Academy of Sciences
1996
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| 主題: | |
| オンライン･アクセス: | https://ncbi.nlm.nih.govhttps://pmc.ncbi.nlm.nih.gov/articles/PMC34119/ https://ncbi.nlm.nih.govhttps://pubmed.ncbi.nlm.nih.gov/8917476/ https://ncbi.nlm.nih.govhttps://doi.org/10.1073/pnas.93.23.12658 |
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