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The Impact of Gravity-Weighted Knowledge Spillovers on Productivity in Manufacturing

机译:重力加权知识溢出对制造业生产率的影响

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This paper tests for localized knowledge spillovers from out-of-state innovations in U.S. manufacturing from 1977 to 1997. The source of these spillovers is innovations categorized into six technologies based on U.S. patent classes and patent data. Using a gravity-weighting for out-of-state innovations, knowledge spillovers are found from mechanical technologies and drug and medical technologies for a broad group of manufacturing industries. Innovations from chemical-related technologies are found to generate spillovers for the Chemical and Allied Products Industry and for the Transportation Equipment Industry. Additionally, specialization of production at the two-digit Standard Industrial Classification of industry level is also found to increase state-level productivity in manufacturing.
机译:本文测试了1977年至1997年美国制造业外州创新带来的局部知识溢出。这些溢出的来源是根据美国专利类别和专利数据将创新分为六种技术。使用重力加权进行州外创新,可以发现来自广泛制造行业的机械技术,药物和医疗技术的知识溢出。发现与化学有关的技术的创新为化学和相关产品行业以及运输设备行业带来了溢出效应。此外,还发现以两位数字的行业标准工业分类进行生产专业化可以提高制造业的州级生产率。

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