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Figure 1: Space-time prism and potential path area (PPA). PPA in this case is delimited by points A and B. (Adapted from Hanson [1995]) |
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Figure 2: Location of urban opportunities in Lexington metropolitan area. |
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Figure 3: Space-time paths of women without children under 16 in the household. |
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Figure 4: Derivation of the daily potential path area (DPPA). (Source: Kwan [1999a]) |