Mathematics
Health Monitoring
100%
Infrastructure
54%
Testing
36%
Sensor Networks
36%
Traffic
29%
Distributed Sensor
24%
Energy Harvesting
23%
Distributed Networks
20%
Rectification
19%
Stress Analysis
17%
Amplification
15%
Harvesting
15%
High Efficiency
15%
Sensor
15%
Tie
15%
Prototype
14%
Health
13%
Discrepancy
13%
Vertical
12%
Proportion
11%
Scaling
11%
Generator
9%
Transform
9%
Costs
9%
Energy
8%
Power Harvesting
8%
Physics & Astronomy
rail transportation
78%
health
55%
warning
34%
rails
30%
traffic
27%
sensors
23%
mechanical devices
18%
supplying
16%
stress analysis
15%
rectification
14%
electric power
14%
roads
13%
low speed
13%
illuminating
12%
luminaires
12%
proportion
12%
generators
10%
light emitting diodes
10%
prototypes
10%
costs
9%
scaling
9%
energy
3%
Engineering & Materials Science
Railroad tracks
75%
Energy harvesting
53%
Railroads
40%
Health
38%
Sensor networks
30%
Rails
29%
Monitoring
29%
Railroad crossings
27%
Testing
26%
Amplification
17%
Stress analysis
17%
Light emitting diodes
17%
Sensors
8%
Costs
6%
Chemical Compounds
Energy
24%
Displacement
21%