
多层嵌套结构视角下区域环境对企业研发效率的影响研究
Impact of Regional Environment on Enterprise R&D Efficiency from the Multi-Level Nested Perspective
企业研发;R&D效率;区域环境;随机前沿模型;多层模型
Research and Development of Enterprise;R&D efficiency;Regional Environment;Stochastic Frontier Model;Hierarchical Model
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