Knowledge spillovers: Does the geographic proximity effect decay over time? A discipline-level analysis, accounting for cognitive proximity, with and without self-citations

作者：

Highlights：

• We studied the variation over time of the geographic proximity effect on knowledge flows.

• Flows are associated to citations exchanged between scientific publications.

• We analyze world publications citing 2010–2012 Italian publications in the WoS.

• Gravity models are used to control for sizes and relevant cognitive proximity.

• The analysis, overall and at discipline level, both includes and excludes self-citations.

摘要

•We studied the variation over time of the geographic proximity effect on knowledge flows.•Flows are associated to citations exchanged between scientific publications.•We analyze world publications citing 2010–2012 Italian publications in the WoS.•Gravity models are used to control for sizes and relevant cognitive proximity.•The analysis, overall and at discipline level, both includes and excludes self-citations.

论文关键词：Knowledge flows,Geographic proximity,Gravity model,Italy

论文评审过程：Received 19 February 2020, Revised 22 May 2020, Accepted 15 June 2020, Available online 30 June 2020, Version of Record 30 June 2020.

论文官网地址：https://doi.org/10.1016/j.joi.2020.101072