Medicine & Life Sciences
Spatial Interaction Models
100%
Africa South of the Sahara
50%
Population Dynamics
40%
Communicable Diseases
29%
Gravitation
25%
Income
18%
Radiation
17%
Natural Science Disciplines
16%
Cell Phone Use
16%
Biological Science Disciplines
14%
Social Sciences
13%
Cell Phone
13%
Epidemiology
8%
Costs and Cost Analysis
7%
Population
4%
Mathematics
Africa
61%
Interaction
32%
Human
27%
Mobile Phone
26%
Infectious Diseases
25%
Gravity Model
24%
Radiation
15%
Model
14%
Urban Areas
12%
Accessibility
9%
Framework
8%
Epidemiology
8%
Availability
8%
Population Dynamics
7%
Community
7%
Movement
7%
Likely
7%
Costs
5%
Review
5%
Norm
4%
Standards
4%
Earth & Environmental Sciences
Africa
33%
travel
27%
infectious disease
26%
mobile phone
19%
commuting
18%
rural area
13%
income
13%
gravity
11%
radiation
10%
travel behavior
9%
physical science
9%
megacity
8%
epidemiology
8%
social science
8%
norm
7%
labor
7%
accessibility
7%
population dynamics
7%
continent
6%
urban area
5%
cost
3%
Agriculture & Biology
Sub-Saharan Africa
50%
travel
39%
infectious diseases
23%
gravity
16%
rural areas
15%
population dynamics
13%
income
13%
social sciences
10%
urban areas
7%
epidemiology
7%
labor
6%
Biological Sciences
5%
Engineering & Materials Science
Cellular telephones
14%
Gravitation
13%
Radiation
11%
Population dynamics
11%
Epidemiology
10%
Social sciences
9%
Personnel
5%
Availability
5%
Costs
2%