This study focuses on diverse dimensions of distance shaping collaboration
in Europe and the USA during the time period 1999–2009. We take a comparative perspective
by analysing two different collaboration networks (patents and publications)
and two different economic areas, in order to examine differences in collaboration
activities. In particular, we investigate how the collaboration intensity between regions
has been influenced by spatial, technological, and cultural distance and whether these
distances have lost importance over time in the distinct networks. The study adopts
a panel spatial interaction modelling perspective. The results show that indeed the
impact of various kinds of distances differs between Europe and the USA and changes
over time.

• The influence of distance types on co-patenting and co-publishing in the USA and Europe over time