Graft copolymers as diffusion control layers in photographic diffusion ...
Diffusion
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DiffusionMs. Patten
2012
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Definition Cultural Diffusion is a process by which
a cultural characteristic spreads across space from one place to another over time.
Idea, technology, custom, product, cultural traits, diseases
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Types of DiffusionExpansion
Contagious
Hierarchical
Stimulus
Relocation
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Expansion Diffusion An innovation or idea develops in a source
area and remains strong there while also spreading outward
Item remains at the hearth Number of users or practicers grows
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Expansion: Hierarchical Spreads through certain vulnerable
segments of a population Large urban areas vs rural areas
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Chart of US AIDS deaths from 1998 to 2002.
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Expansion: Contagious nearly all adjacent individuals are affected
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Expansion: Stimulus the idea stimulates experimentation and
adaptation of the original animals for farming
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Relocation Diffusion An innovation or idea is spread through
physical movement of people from one place to another
Number of users stays the same Idea moves with the people
Casserole vs hot dish (Wisconsin/Minnesota)
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