Day_5_April_15_Time_Geography

Day_5_April_15_Time_Geography - Time Geography Time...

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me Geography Time Geography Geog 5 Spring 2008 ulias@geog.ucsb.edu goulias@geog.ucsb.edu © Konstadinos G. Goulias 1
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hursday’s Summary Measuring Interaction Thursday s Summary Complementarity, transferability, intervening opportunities Distance Decay he Gravity Concept The Gravity Concept Aggregate vs Disaggregate Descriptive – Predictive–Normative Models Travel Demand Forecasting Model @SCAG Land use and person characteristics define the need for travel Trans. Systems & Network characteristics define routes and modes used to travel Spatial interaction leads to impacts that we measure © Konstadinos G. Goulias 2
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he 4 ep Model The 4 step Model © Konstadinos G. Goulias 3
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ravity model Gravity model k f A P ] [ = N ij ij j i ij T k f A = n ij ij j 1 © Konstadinos G. Goulias 4
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Background The unit of measurement (zone) is an aggregate of people We can create further groups but each person in each group is considered behaving in EXACTLY the same way as other people in the group – like a “generic particle” BUT the types of problems we examine require models with more human realism (taxation, access to jobs, ducation provision income distribution prices/costs education provision, income distribution, prices/costs changing) NEW model ideas emerged from considering a basic niformly behaving unit and adding information about uniformly behaving unit and adding information about behavior to these “generic particles”–incremental approach to make more realistic models © Konstadinos G. Goulias 5
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Hagerstrand’s Criticism to Aggregate Models ass treatment of humans e a particle in Mass treatment of humans like a particle in the flow of people from one place to another eir social organization is not accounted for Their social organization is not accounted for Technology is also absent from the models Time is fundamental in people’s behavior Time should be fundamental in models about behavior © Konstadinos G. Goulias 6
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ime & Role Considerations Time & Role Considerations ow of time is one way (we cannot go back in Flow of time is one way (we cannot go back in time) metimes space & time are not separable Sometimes space & time are not separable (some events take place only at specific times d places and nowhere else) and places and nowhere else) Individuals play several roles at the same time Roles are some times complementary and some times mutually exclusive © Konstadinos G. Goulias 7
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oles from a Temporal Viewpoint Roles from a Temporal Viewpoint Roles have duration oes ae du at o They are given times and places ey need other people and specific groups They need other people and specific groups They need equipment (call them artifacts) ey are organized in sequences that are unique They are organized in sequences that are unique and part of them are not substitutable All this discussion applies to the Life Path that pp spans our entire existence from birth to death and to our everyday life in 24 hours or more © Konstadinos G. Goulias 8
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Day_5_April_15_Time_Geography - Time Geography Time...

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