Chapter 14 Exercises

Chapter 14 Exercises - Chapter 14 Exercises For Exercises...

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Chapter 14 Exercises For Exercises 1–8, match the kind of simulation with the example. A. Continuous simulation B. Discrete event simulation 1. Weather forecasting A 2. Stock portfolio modeling B 3. Seismic exploration A 4. Hurricane tracking A 5. Predicting number of tellers a new bank needs B 6. Determining the number of waiting rooms necessary for a doctor’s office B 7. Gas exploration A 8. Air-chemistry models A For Exercises 9–20, mark the answers true and false as follows: A. True B. False 9. Simple systems are best suited to being simulated. B 10. Complex systems are dynamic, interactive, and complicated. A 11. A model is an abstraction of a real system. A 12. The representation of a model may be concrete or abstract. A 13. In computer simulations, the models are concrete. B Chapter 14 Exercises 707 Lewis_complete_ans 5/26/04 4:54 PM Page 707 14. The more characteristics or features represented in the model the better. B 15. Continuous simulations are represented by entities, attributes, and events. B 16. Changes in discrete event simulations are represented by partial differential equations. B 17. CAD stands for computer-aided drafting. B 18. A time-driven simulation can be thought of as a big loop that executes a set of rules for each value of the clock. A 19. A model whose realization is within a computer program is an abstract model. A 20. A concrete model can be realized within a computer program. B
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Exercises 21–49 are problems or short answer questions. 21. Define simulation and give five examples from everyday life. Simulation is the development of a model of a complex system and the experimentation with the model to observe the results. TV weather forecasters use computer models to predict the weather. Pilots spend time in a flight simulator before actually flying an aircraft. Engineers use wind tunnels to test out a new design. Automotive engineers use simulated crash tests to see how cars survive at different speeds. Dummies are used in crash tests to see how they survive. A chef experiments with a new recipe to see which combination of ingredients is best. 22. What is the essence of constructing a model? The essence of constructing a model is to identify a small subset of characteristics or features that are sufficient to describe the behavior to be investigated. 23.
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Chapter 14 Exercises - Chapter 14 Exercises For Exercises...

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