标题：The Role of Nonprofit Organizations in Community Quality-of-Life: Mission Creep, Cherry-Picking, and the Dwquelae of the Privatization of Public Services
摘要：Despite the fact that knowledge spillovers have explicitly geographic
components, the role of spatial effects in the knowledge spillover
process has been ignored. In this context, the objective of this paper is to
observe differences in the spatial distribution of innovative activity
across U.S. metropolitan areas, and thereby to examine whether the concentration
of innovative activity in a metropolitan area is spatially correlated
to the concentration of neighboring metropolitan areas¡¯ innovative
activity. Based on a data set of patents, this paper presents the recent
space-time patterns of metropolitan innovative activity for the period
1990-1999.
