Research Lags and Spillovers
Research Lags and Spillovers
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研究滞后和溢出
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
P. Pardey
中科院分区：
文献类型：
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作者：
J. Alston;J. S. James;M. Andersen;P. Pardey
建模和衡量研发对生产率的影响是一件棘手的事情。将生产力归因于研发的挑战是确定哪项研究、由谁进行以及何时对特定生产力的提高负责。换句话说，在模拟研究对农业生产率的影响时，两个主要的困难领域是知识溢出的处理（即，归因问题的“由谁”部分）以及识别联系研究支出、知识存量和生产率的滞后结构（即，“当”的部分）。
Modeling and measuring the productivity consequences of R&D is a tricky business. The challenge in attributing productivity to R&D is to establish which research, conducted by whom, and when, was responsible for a particular productivity increase. In other words, in modeling the effects of research on agricultural productivity the two principal areas of difficulty are in the treatment of knowledge spillovers (i.e., the “by whom” part of the attribution problem) and in identifying the lag structure linking research spending, knowledge stocks, and productivity (i.e., the “when” part).