Marshallian Externalities And The Emergence And Spatial Stability Of Technological Enclaves*

1998 ◽  
Vol 6 (2-3) ◽  
pp. 147-182 ◽  
Author(s):  
Paul a. David ◽  
Dominique Foray ◽  
Jean-Michel Dalle
Circulation ◽  
1996 ◽  
Vol 93 (10) ◽  
pp. 1845-1859 ◽  
Author(s):  
Alain Vinet ◽  
René Cardinal ◽  
Pierre LeFranc ◽  
François Hélie ◽  
Pierre Rocque ◽  
...  

10.2307/4230 ◽  
1980 ◽  
Vol 49 (3) ◽  
pp. 831 ◽  
Author(s):  
L. R. Taylor ◽  
I. P. Woiwod ◽  
J. N. Perry

2021 ◽  
pp. 088626052098781
Author(s):  
Marin R. Wenger ◽  
Brendan Lantz

Prior research suggests that many crime types are spatially concentrated and stable over time. Hate crime, however, is a unique crime type that is etiologically distinct from others. As such, examination of hate crime from a spatial and temporal perspective offers an opportunity to understand hate crime and the spatial concentration of crime more generally. The current study examines the spatial stability of hate crimes reported to the police in Washington, D.C., from 2012 through 2018 using street segments, intersections, and block groups as units of analysis. Findings reveal that hate crime is spatially concentrated, with less than 4% of street segments and intersections experiencing hate crime over the study period. Results reveal a high degree of spatial stability, both year-to-year and over the long term even when restricting the analysis to units that experienced at least one hate crime.


Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4269
Author(s):  
Luigi Aldieri ◽  
Jonas Grafström ◽  
Concetto Paolo Vinci

The purpose of this paper is to establish if Marshallian and Jacobian knowledge spillovers affect job creation in the green energy sector. Whether these two effects exist is important for the number of jobs created in related fields and jobs pushed away in other sectors. In the analysis, the production efficiency, in terms of jobs and job spillovers, from inventions in solar, wind and energy efficiency, is explored through data envelopment analysis (DEA), based on the Malmquist productivity index, and tobit regression. A panel dataset of American and European firms over the period of 2002–2017 is used. The contribution to the literature is to show the role of the spillovers from the same technology sector (Marshallian externalities), and of the spillovers from more diversified activity (Jacobian externalities). Since previous empirical evidence concerning the innovation effects on the production efficiency is yet weak, the paper attempts to bridge this gap. The empirical findings suggest negative Marshallian externalities, while Jacobian externalities have no statistical impact on the job creation process. The findings are of strategic importance for governments who are developing industrial strategies for renewable energy.


2001 ◽  
Vol 15 (10) ◽  
pp. 805-807
Author(s):  
I E Lapin ◽  
V A Kosovich ◽  
A N Potapov ◽  
O A Rusol

2008 ◽  
Vol 11 (4) ◽  
pp. 338-347 ◽  
Author(s):  
Alexandra Weigelt ◽  
Jens Schumacher ◽  
Christiane Roscher ◽  
Bernhard Schmid

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