Table 7 DPTM estimated result with IND as threshold variables.

From: Ecological footprints, carbon emissions, and energy transitions: the impact of artificial intelligence (AI)

Threshold

IND

Dependent variable

EF

CE

ETR

Model

Model T1

Model T2

Model T3

Result

Lower estimation

Threshold effect

Lower estimation

Threshold effect

Lower estimation

Threshold effect

L.y

0.0980***

0.0244

−0.1264***

0.2158***

0.7688***

−0.0085

 

(0.0319)

(0.0301)

(0.0348)

(0.0404)

(0.0077)

(0.0130)

lnAI

−0.0090***

0.0089***

−0.0065***

0.0089***

−0.0209***

0.0263***

 

(0.0010)

(0.0008)

(0.0016)

(0.0018)

(0.0021)

(0.0035)

lntnrr

0.0344**

−0.0016

−0.0169***

0.0236***

−0.0754***

0.1391***

 

(0.0143)

(0.0158)

(0.0045)

(0.0059)

(0.0111)

(0.0179)

lnurb

1.9053***

−0.5999*

−1.1437***

1.0591***

2.2113***

−2.0444***

 

(0.6121)

(0.3169)

(0.2783)

(0.1560)

(0.8521)

(0.3922)

lngov

−1.6435***

1.3941***

−0.8586***

0.9296***

−0.5939***

0.9052***

 

(0.1676)

(0.1305)

(0.1225)

(0.1202)

(0.1002)

(0.1281)

lnpgdp

−0.1922**

0.2241***

0.3667***

−0.1099***

−0.2384*

−0.0356

 

(0.0800)

(0.0604)

(0.0382)

(0.0372)

(0.1318)

(0.0972)

lines

0.3005***

−0.1070*

1.1121***

0.2448***

0.2773

−0.4688***

 

(0.1085)

(0.0600)

(0.1078)

(0.0453)

(0.2740)

(0.1696)

lnpeu

0.3612***

−0.2019***

0.4122***

0.0554***

−0.1183

0.1270**

 

(0.0570)

(0.0251)

(0.0350)

(0.0115)

(0.0746)

(0.0525)

cons

 

−1.9008

 

−7.9890***

 

7.3795***

  

(1.2270)

 

(0.8432)

 

(1.0979)

  1. Standard errors are in parentheses.
  2. ***p < 0.01; **p < 0.05; *p < 0.1.