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Diffusion

Diffusion. Explain the Diffusion of HIV/AIDS. http:// bcs.wiley.com/he-bcs/Books?action=mininav&bcsId=3206&itemId=0471701211&assetId=96275&resourceId=8133&newwindow=true. Explain the diffusion of Religion. Diffusion. Innovation: The introduction of something new

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Diffusion

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  1. Diffusion

  2. Explain the Diffusion of HIV/AIDS • http://bcs.wiley.com/he-bcs/Books?action=mininav&bcsId=3206&itemId=0471701211&assetId=96275&resourceId=8133&newwindow=true

  3. Explain the diffusion of Religion

  4. Diffusion • Innovation: The introduction of something new • Hearth: The place of origin of something • Diffusion: The spread of something • Ideas, innovations, products, culture traits, diseases • Spatial perspective : some patterns and process

  5. Diffusion • Relocation Diffusion: items leave an area behind. • People carry culture traits • initially number of adopters stays the same

  6. Diffusion • Expansion Diffusion: spreads geographically by passing from one person to the next. • Number of adopters expands • Often intensifies in hearth region

  7. Diffusion • Examples of expansion following relocation • African Americans and blues/jazz • Mexican/Chinese food • Christianity • British and sports

  8. Diffusion • Typical S-Curve • Ex. Cell phones • Innovators • Majority adopters • laggards

  9. The Diffusion Process • Why do some things diffuse quicker? • Where we live • Contagious Effect – places near origin • Think pebble in water Ex. Spread of Islam, clothing, punk/hip-hop, AIDS

  10. The Diffusion Process • Hierarchical Effect • Not follow rule of distance • Contact with important cities and people – why? Ex. Spread of Islam, clothing, punk/hip-hop, AIDS In any event, contagious and hierarchical effect function of the carriers

  11. Diffusion Examples • World Religions • http://www.mapsofwar.com/ind/history-of-religion.html • Mormonism • https://www.youtube.com/watch?v=JdMNWMhK_kA

  12. HIV/AIDS Diffusion • TED talk • https://www.youtube.com/watch?v=3qRtDnsnSwk

  13. Barriers to Diffusion – spread also a function of barriers • Absorbing barrier – halts the spread • Physical or cultural features

  14. Barriers to Diffusion • Interrupting Barriers – delays or deflates • Physical or cultural features

  15. Barriers to Diffusion • Reflecting Barrier – focuses diffusion in a certain direction

  16. Distribution • Distribution: arrangement of a feature • Density: frequency of something • Concentration: spread of something(clustered or dispersed) • Pattern: design and shape

  17. Density and Concentration of Baseball Teams, 1952 & 2007 Fig. 1-19: The changing distribution of North American baseball teams illustrates the differences between density and concentration.

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