ABSTRACT

This study examines how related and unrelated variety at the regional level are correlated with establishment-level R&D investment in the environmental industry in Korea. We find a positive correlation between unrelated variety and R&D investment, while related variety does not show a significant correlation. Additionally, the relationship between unrelated variety and R&D investment varies with establishment size. Unrelated variety has positive externalities only for micro establishments and has no clear effects on small, medium, and large establishments.

中文翻译：

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环保产业相关品种、非相关品种及研发投入

摘要

本研究探讨了区域层面的相关和不相关品种如何与韩国环境产业的企业级研发投资相关。我们发现不相关的品种与研发投入呈正相关，而相关品种的相关性不显着。此外，无关品种与研发投资之间的关系因企业规​​模而异。无关品种仅对微型企业具有正外部性，对小型、中型和大型企业没有明显影响。