Table 10 DPTM estimated result with ETR as threshold variables.

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

Threshold

ETR

Dependent variable

EF

CE

ETR

Model

Model T4

Model T5

Model T6

Result

Lower estimation

Threshold effect

Lower estimation

Threshold effect

Lower estimation

Threshold effect

L.y

−0.0137

0.1646

0.0805

0.0688

0.8137***

−0.5781***

 

(0.1041)

(0.1015)

(0.0526)

(0.0576)

(0.0038)

(0.0670)

lnAI

0.0216***

−0.0319***

0.0008**

0.0005

0.0137***

−0.0190***

 

(0.0053)

(0.0066)

(0.0004)

(0.0006)

(0.0014)

(0.0015)

lntnrr

0.0229**

0.0431***

0.0163***

−0.0167***

−0.0060

−0.0003

 

(0.0109)

(0.0146)

(0.0040)

(0.0039)

(0.0097)

(0.0118)

lnurb

1.4952*

−2.3582**

0.6340**

0.5643***

1.4503***

−2.4406***

 

(0.8947)

(1.0396)

(0.3106)

(0.2016)

(0.2607)

(0.1913)

lngov

0.2388

−0.6465***

0.0603

−0.2893***

0.0116

0.1001

 

(0.2063)

(0.2221)

(0.0449)

(0.0514)

(0.0446)

(0.0778)

lnpgdp

−0.1012

0.3697***

0.1279**

−0.1309**

−0.1823***

0.5320***

 

(0.1221)

(0.1319)

(0.0627)

(0.0588)

(0.0552)

(0.0608)

lnfes

0.3115

−0.6350

1.2938***

−0.6434***

−1.0482***

0.3563

 

(0.6034)

(0.5285)

(0.1749)

(0.1546)

(0.2717)

(0.2921)

lnpeu

0.3691***

0.3918***

0.6104***

−0.0214

−0.4455***

0.2461***

 

(0.1049)

(0.0761)

(0.0423)

(0.0199)

(0.0570)

(0.0594)

cons

 

9.1659**

 

2.4083***

 

3.8477**

  

(4.3047)

 

(0.8464)

 

(1.5446)

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