Industrial districts, innovation and I-district effect: territory or industrial specialization?



Table 4. Estimates of the input coefficients in the I-district fixed effects.

________________(1.1)

(1.2)

_____________(1.3)

(1.4)

(1.5)

(1.6)

Constant

5.1464 ***

5.5055 ***

5.5861***

4.7451***

4.7635***

4.8347***

(0.000)

(0.000)

(0.000)

(0.000)

(0.000)

(0.000)

R&D firms (1)

0.2635 ***

0.2825 ***

0.2751***

(0.000)

(0.000)

(0.000)

R&D firms (2)

0.0905***

0.0970***

0.0943***

(0.000)

(0.000)

(0.000)

R&D public

0.1902 ***

0.2441 ***

0.2485***

0.2061***

0.2328***

0.2187***

___________(0.001)

(0.000)

________(0.000)

(0.001)

(0.000)

(0.000)

Territory and

Territory and

Fixed effects

Territory

Industry

Industry

Territory

Industry

Industry

Fixed effects F-test

0.000

0.000

0.000

0.000

0.000

0.000

LR selection (Iambda=O)_________

_____________0.000

0.0001

________0.0002

0.0003

0.0003

0.0008

R2-ajd / Pseudo R2

0.297

0.3225

0.3283

0.3111

0.3315

0.3371

Log-L

-681.46

-670.24

-658.20

-679.82

-666.19

-654.26

Akaike

1370.91

1378.473

1390.40

1379.64

1370.39

1382.53

BIC

1388.50

1462.015

1553.08

1423.61

1453.93

1545.22

Number of obs________________

_____________806

_______806

___________806

_______806

806

_________806

(1) R&D imputed from regional data

(2) R&D from firm microdata

Notes: (a) Dependent variable = Patents per employee in the 2001-2006 period; (b) All variables are natural logarithms; (c) P-values are in parentheses and
asterisks represent statistical significance at 1% (***), 5% (**) and 10% (*); (d) Within group effect model estimates; (e) Fixed effects provided under the
restriction that ∑ α
i = 0, so that the dummy coefficients mean deviations from the averaged group effect (intercept); (f) Heckman two stages coefficients
adjusted for sample selection; (g) Robust Huber-White estimators when slight problems of heteroskedasticiy, collinearity or outliers are detected.

18



More intriguing information

1. Revisiting The Bell Curve Debate Regarding the Effects of Cognitive Ability on Wages
2. Inflation and Inflation Uncertainty in the Euro Area
3. Handling the measurement error problem by means of panel data: Moment methods applied on firm data
4. The name is absent
5. The Complexity Era in Economics
6. The name is absent
7. The name is absent
8. EXPANDING HIGHER EDUCATION IN THE U.K: FROM ‘SYSTEM SLOWDOWN’ TO ‘SYSTEM ACCELERATION’
9. On s-additive robust representation of convex risk measures for unbounded financial positions in the presence of uncertainty about the market model
10. Monetary Discretion, Pricing Complementarity and Dynamic Multiple Equilibria