trans_sys_chap11

trans_sys_chap11 - Introduction to Transportation Systems 1...

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Introduction to Transportation Systems 1
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PART I: CONTEXT, CONCEPTS AND CHARACTERIZATION 2
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Chapter 11: Modeling Concepts 3
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Hierarchies of Models Macroscopic model of system behavior Detailed models of component behavior Figure 11.1 4
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Modeling Issues Boundaries Operations Competition Technology Economic growth Demand Land use system boundary A possible Air quality, Resources Figure 11.3 5
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Modeling Issues (continued) ± Macroscopic vs. Microscopic Models ± Static vs. Dynamic Models ± Stochastic vs. Deterministic Models 6
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(continued) ± Linear vs. Non-Linear ± Linear vs. non-linear models is a good example of the trade-off between constructing models that can produce answers relatively easily versus models that represent the world better but turn out to be more difficult to “solve” in generating actual answers. ± Linear vs. non-linear models illustrate the trade-off between reality in representation and ease in generating solutions . 7
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trans_sys_chap11 - Introduction to Transportation Systems 1...

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