Answer & Explanation:SHORT
ESSAY: Write your answers in a separate document in Word (.doc/.docx) or Rich
Text Format (.rtf) and post it to the course online system by deadline.
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SHORT ESSAY: Write your answers in a separate document in Word (.doc/.docx) or Rich Text
Format (.rtf) and post it to the course online system by deadline.
Please note that the answer to each of these questions is hardly more than half a page. So
your answers must be short and to the points. Writing too much and “irrelevant” to the
question will cost you points. Also for each question you must add the source at the end of
your answer (page number from the textbook or the URL from the Web).
QUESTIONS:
[5 points]
1. Build a state diagram modelling the required behavior of a thermostat in a house temperature
control system. The model should capture the dynamics of state variables controlled by the
thermostat based on the following simplified problem statement.
A thermostat shall regulate a house heating and air conditioning (AC) system.
It must switch theheating sub- system on when the heating mode is on and the measured home
temperature is below some user-specified temperature, and off when the heating mode is off or the
measured home temperature is above that desired temperature. Symmetrically, the thermostat
mustswitch the AC sub-system on when the cooling mode is on and the
measured hometemperature is above some user- specified temperature, and off when the cooling
mode is offor the measured home temperature is below that desired temperature. The
thermostat shallalso control a user interface that will consistently display: (a) the current mode
(heating orcooling), (b) whether the corresponding sub-system is running or not, and (c) the current
measured temperature and the desired temperature entered by the user on a control panel.
Due to the inherent concurrency in this system, your state diagram should show nested parallel and
sequential states.
[5 points]
2. Elaborate an overall organization of a multi-view model for the meeting scheduling system into
cohesive packages. Explain the reasons for your grouping choices.
[5 points]
3. Show how the context diagram in Figure 11.8 can be derived piecewise from the goal model
fragment shown in Figure 8.20
.
Figure 11.8
Figure 8.20
[5 points]
4. Derive an agent diagram and a context diagram from the goal model fragment for the meeting
scheduling system shown in Figure 8.11.
Figure 8.11
…
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