HW_6_2007_Solutions - SYSEN 510 Applied Systems Engineering...

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SYSEN 510: Applied Systems Engineering Fall 2007 Homework #6 Due Date: Monday, 10/1/07 1. Prework from “Engineering Complex Systems with Models and Objects.”, by Oliver, Kelliher and Keegan, (7 points) (a) (2 points) Figure 2.14 is a classification tree for pocket knives. If we created a parts tree for each type of pocket knife, name a subsystem that would show up under “switchblade knife”, “gravity knife”, and “lockblade knife” but would not show up under “six-tool pocket knife?” (b) (3 points) In the concept phase of the ATM system analysis, the design engineer converted the paragraph following the header “Initial Information for an Automated Teller Machine System” in section 11.3, into a list of “Requirements for the ATM system”, a list of “Statements about the Structure of Banks”, and a list of “Instructions about the Problem”. In the future design exercise, in what way will these lists be more useful than the original paragraph? List three advantages. (c) (2 points) What structural diagram in Chapter 11 (Cencept Analysis) resulted from concept generation. 2. Prework from “Design Rules: Volume 1. The Power of Modularity”, by Baldwin and Clark (10 points) (a) (2 points) What was the dominant message reaching IBM from their customers, before the SPREAD report team was organized? (b) (2 points) Summarize the three main phases of the process of the design effort, in at most one sentence each. Give the most important attribute of the second phase, from a systems design perspective. (c) (2 points) In what concrete ways did top management demonstrate their commitment the new concept in computer architecture? (d) (4 points) The integration and testing phase was harder than anticipated. Why? 3. Consider your systems project or, if you are not yet sufficiently involved in one, the Bathbot case study. Do not use any of the examples provided in class. a) Write at least three distinct initial text requirements for the system that are “valid.” (6 points) b) Write a requirement that is not valid; explain why it is not valid; and rewrite it as a valid requirement. (6 points) c) Identify the type of each of the following requirements and indicate whether or not it is verifiable. Explain why or why not it is verifiable. Offer a verification method if possible. (4 points) “The Bathbot shall have a MTBF of 9 months.” “The Bathbot’s drive system shall operate quietly.”
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