random shit Flashcards
barriers with diffusion can be classified in terms of _______
physical/natural
Distance decay
The further away from source, the lower the incidince of diffusion
What is diffusion
Diffusion is the spread of something more widely (ex. innovation or disease)
Expansion diffusion
Spreads from 1 place to another, weaker in new areas and intenser in original area
Relocation diffusion
Spatial/geographic process. The disease/innovation leaves the area.
Network diffusion
When the thing spreads through transport and social networks
Contagious diffusion
spread through direct contact, mostly for diseases, heavily affected by distance
What is an example of expansion diffusion?
H1N1 Flue
What is an example of Relocation diffusion?
Migration, HIV, Measles
What is an example of Network diffusion
HIV spreading through importnat transport routes.
Hierarchical diffusion
Spread through an ordered sequence of classes or places. Cascades from large to small
What is an example of Hierarchical diffusion?
Spread from large city to small remote village.
Distance Decay
BARRIER. Further away from source, lower the incidence rate
Rural peripheries
BARRIER. Affect certain diseases. Remote so unlikely many will be affected
Mountainous regions
NATURAL BARRIER. Ocean and mountains restrict/contain people.
Regions of extreme climate
BARRIER. Small in and out migration, spread is less likely
Socio - Political structure.
HUMAN MEASURE. Restricts and prevent migrations. At high risk times, can close border entirely.
Management
HUMAN MEASURE. Directly related to how it’s spread. Isolation, set of measures to prevent further spread.
What is an example of Socio-political structure.
US immigration preventing passage to people with infectiou disease
What is an example of management
H1N1 flue, measures implemented by UK to stop spread.
Agricultural innovation
Diffusion of innovation, modernized and improved throughout history. Ancient civilizations built on the back of agricultural innovation.
Give an example of Mechanization innovation in Agriculture
Automation of seed fertilization and planting.
Give an example of Technology innovation in Agriculture
Better tech making crops and growth easier to facilitate.
Give an example of Economy of scale innovation in Agriculture
A lot cheaper to start a farm.