SYST 210
System Design
Kathryn Blackmond Laskey
Department of Systems Engineering and Operations Research
George Mason University
Homework Assignment 8
Due November 5, 2020
Reading assignment: Chapters 7 and 8
Homework must be neat and readable. At the top of every
page
you must include your name, the assignment number, and the due
date. Clearly indicate the question you are answering. You
do not
need to copy the entire question, but you must mark the question
number
and a brief description at the beginning of your answer for each
question. You may work with others, but you must hand in your own
assignment.
This assignment uses the UChekIt case study.
For this assignment, we will all start with a
common external systems
diagram, function
decomposition and data
model for UChekIt. Notice that the external systems diagram is
slightly different from the one given in Assignment 7. An input of
"item price data" from the inventory system has been added. The
engineers realized when developing the functional architecture that
UChekIt needs an input from the inventory system to allow it to
match the scanned barcode to an item in the inventory and retrieve
its price.
A CORE model is provided on Blackboard as a starting point for this
assignment.
- Develop a generic physical architecture for UChekIt. Create
components in CORE for your generic physical architecture.
Arrange them in a physical hierarchy using the "built from"/
"built
in" relations. Produce a physical hierarchy diagram.
- Choose three of the bottom-level components in your physical
architecture. Describe performance characteristics for at least
two alternatives for each of these components. Create
a morphological box for the three components. Include
references
to web sites or other sources of information that justify your
choice
of performance parameters and values. Use a standard citation
format such as IEEE for your references.
- Choose two different candidate instantiated physical
architectures from among the possibilities represented in your
morphological box.
- Write a paragraph explaining your physical
architecture. Describe the choices for the instantiated physical
architecture represented in your morphological box. Write your
description so an intelligent college student who has not taken
SYST
210 could understand your explanation.
- In CORE, allocate the components you created to the functions
they perform using
the "allocated to" / "performs" relations. Produce IDEF0
diagrams for
F.0, F.0.1 and F.0.2. These diagrams should show the allocations
you created. Save as image files. Make an ICOM table for your
allocated
architecture.
- Produce activity
diagrams
representing the UChekIt activation and control structure. Your
diagrams should match the provided diagrams, except that they
will show
your allocated functions in the bottom partition. Write a
paragraph
explaining each activity diagram. (Note: to remove items from
your
activity diagrams, first select all the items you want to
remove. Then
right-click, select "Presentation > Hide Selection." Then
select
"Presentation > Display Mode > Hidden.")
- Produce a report that includes your IDEF0 diagrams with
allocations to components,
ICOM table, morphological box, candidate instantiated
architectures and
explanation, and activity diagrams with explanation. You
are expected to produce a professional quality
engineering document. Make sure your name and "Assignment
8"
appear on every page. Make sure your pages are numbered. You
will be
graded for professionalism, clarity of writing, how well your
diagrams
match the instructions you have been given, and correctness of
your
descriptions.
Back to the
course homepage