It appears that you're referring to a figure or diagram that illustrates a concept related to spatial interaction, but I cannot see images or figures. However, I can provide a general overview of spatial interaction concepts and models. If you describe the figure or its components, I can also help you analyze or interpret it.
Spatial interaction typically refers to the movement of people, goods, or information across space. Key concepts in spatial interaction include:
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Gravity Model: This model predicts the interaction between two places based on their population sizes and the distance between them. It suggests that larger places attract more interaction, but distance acts as a barrier.
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Lowry Model: This urban economics model explains the distribution of activities in urban areas, considering factors like land use and transportation.
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Central Place Theory: This theory explains the size and distribution of human settlements and their role in providing goods and services. Central places are the urban centers that provide services to surrounding areas.
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Transportation Networks: Analyzing how roads, railways, and other transport routes facilitate or hinder the interaction between locations.
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Diffusion: The spread of cultural, economic, or technological phenomena across space.
If you describe the figure or outline its key elements, I would be happy to help you interpret it further!