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
Keyword(s):  
Spatial Stability ◽  
Marshallian Externalities

Cycle Length Dynamics and Spatial Stability at the Onset of Postinfarction Monomorphic Ventricular Tachycardias Induced in Patients and Canine Preparations

Circulation ◽  
1996 ◽  
Vol 93 (10) ◽  
pp. 1845-1859 ◽  
Author(s):  
Alain Vinet ◽  
René Cardinal ◽  
Pierre LeFranc ◽  
François Hélie ◽  
Pierre Rocque ◽  
...  
Keyword(s):  
Cycle Length ◽  
Spatial Stability ◽  
Ventricular Tachycardias

Variance and the Large Scale Spatial Stability of Aphids, Moths and Birds

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

Hate Crime and Place: The Spatial and Temporal Concentration of Bias-Motivated Crime in Washington, D.C.

2021 ◽  
pp. 088626052098781
Author(s):  
Marin R. Wenger ◽  
Brendan Lantz
Keyword(s):  
Hate Crime ◽  
Hate Crimes ◽  
Temporal Perspective ◽  
Spatial Stability ◽  
Units Of Analysis ◽  
Crime Types ◽  
High Degree ◽  
Block Groups ◽  
Street Segments

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.

scholarly journals The Effect of Marshallian and Jacobian Knowledge Spillovers on Jobs in the Solar, Wind and Energy Efficiency Sector

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4269
Author(s):  
Luigi Aldieri ◽  
Jonas Grafström ◽  
Concetto Paolo Vinci
Keyword(s):  
Energy Efficiency ◽  
Solar Wind ◽  
Production Efficiency ◽  
Knowledge Spillovers ◽  
Job Creation ◽  
Green Energy ◽  
Malmquist Productivity Index ◽  
Productivity Index ◽  
Tobit Regression ◽  
Marshallian Externalities

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.

Spatial stability of arc and weld formation in welding thin sheets of AI with right‐angle different polarity pulses

2001 ◽  
Vol 15 (10) ◽  
pp. 805-807
Author(s):  
I E Lapin ◽  
V A Kosovich ◽  
A N Potapov ◽  
O A Rusol
Keyword(s):  
Thin Sheets ◽  
Weld Formation ◽  
Spatial Stability

scholarly journals Does biodiversity increase spatial stability in plant community biomass?

2008 ◽  
Vol 11 (4) ◽  
pp. 338-347 ◽  
Author(s):  
Alexandra Weigelt ◽  
Jens Schumacher ◽  
Christiane Roscher ◽  
Bernhard Schmid
Keyword(s):  
Plant Community ◽  
Spatial Stability ◽  
Community Biomass
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