Earth & Environmental Sciences
train
65%
ozone
54%
public
46%
ground-level ozone
38%
travel behavior
18%
effect
16%
credit
15%
program
14%
emission reduction
13%
citizen
13%
automobile
12%
urban area
10%
forecast
9%
pollution
9%
pollutant
8%
Business & Economics
Ozone
100%
Train
66%
Ozone Pollution
22%
Voluntary Programs
18%
Public Transportation
14%
Travel Behavior
13%
Urban Areas
13%
Automobile
12%
Emission Reduction
12%
Credit
10%
Fixed Effects
10%
Regression Model
9%
Authority
6%
Social Sciences
transit authority
37%
travel behavior
30%
public transportation
29%
pollutant
26%
motor vehicle
23%
urban area
20%
credit
19%
regression
14%
citizen
14%
Engineering & Materials Science
Ozone
87%
Pollution
9%
Automobiles
9%