1. SOEN 343 Software Design
Computer Science and Software Engineering Department
Concordia University
Fall 2004
Instructor: Patrice Chalin

2. Agenda
Welcome back!
The SE challenge: an example of state-of-practice in SE.
(For fun, not exam material.)
Questionnaire to fill in (on your own).
Design in context:
What will be covered in this course?
Course information and resources.
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SOEN 343, © P.Chalin,

3. Taking the Twinkle out of Starlight
Cover article of Dec issue of IEEE Spectrum.
The Mt. Hopkins Observatory, in Arizona, which houses the 6.5-meter MMT telescope, sits 2600 meters above sea level.
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SOEN 343, © P.Chalin,

4. The Telescope Mt. Hopkins Observatory, in Arizona
6.5-meter MMT telescope,
2600 meters above sea level.
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SOEN 343, © P.Chalin,

5. The Telescope, a closer look
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6. The Problem Atmosphere blurs images of ground based telescopes.
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7. A Solution: Adaptive Optics
“Correct” the effect of atmospheric distortions.
Can result in an improvement of image sharpness by a factor of 10.
Here is an example …
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SOEN 343, © P.Chalin,

8. Take a look in Orion SOEN 343, © P.Chalin,
This is a picture of the Orion constellation. The following picture comes from part of the sword (not shown above).
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SOEN 343, © P.Chalin,

9. Wow! How Do They Do It? Adaptive optics.
Implemented with real-time computing power!
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SOEN 343, © P.Chalin,

10. AO Built Into Secondary Mirror
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11. 336 Actuators and
10 nm accuracy
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12. 336 Sensors Measurements accurate to 3 nm. SOEN 343, © P.Chalin,
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13. Entire Assembly
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14. But Wait, That’s Not All!
Technique for the direct observation of extra-solar planets.
Details can be found in the article.
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SOEN 343, © P.Chalin,

15. “Design” in Context
Where do design activities fit into an overall SE process? Let us take a look …
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SOEN 343, © P.Chalin,

16. Rational Unified Process (RUP)
Disciplines
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17. Design vs. Requirements
Can you qualify the difference between a statement of requirements and a design statement?
(I will be asking you for an answer next class.)
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SOEN 343, © P.Chalin,

18. Design vs. Requirements
Implementation
Architectural
In most cases it is clear whether an artifact or part of an artifact belongs to Req, Design or Impl.
In other cases it is not so clear. The important point is not to waste time debating what it should be labeled and simply document it!
Detailed
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SOEN 343, © P.Chalin,

19. Guidelines: International Summit SE Education
Be grounded in
Sound research and mathematical theory,
Widely accepted best practice.
Underlying and enduring principles.
Have a significant real-world basis
Students gain some experience with tools (but not the focus).
(International Summit SE Education, 2003)
International Summit on SE Education
Co-located with ICSE 2003 (icse-conferences.org).
SE should be taught as a problem-solving discipline.
Underlying and enduring principles should be emphasized, rather than details of specific tools.
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SOEN 343, © P.Chalin,

20. Course
Theory
Practice
Tools
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21. Design Theory Fundamental design principles.
Focus: Object-oriented analysis & design.
OOP fundamentals
Patterns.
Secondary: design notations UML.
(Requirements artifacts: understanding will be assumed, but briefly reviewed.)
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SOEN 343, © P.Chalin,

22. Theory Application Practice makes perfect … and
Practice makes the material concrete.
Design & implementation.
Eclipse 2.1 (+ XDE).
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23. Practice: Application Domain
Enterprise Applications. (What?)
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24. Practice: Enterprise Applications
EA Web applications.
Java Server Pages (JSP) technology.
Secure & robust EA can be difficult to get right.
Martin Fowler’s, Patterns of Enterprise Application Architecture.
Foundations in this course.
More advanced patterns in S/W Architecture course.
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SOEN 343, © P.Chalin,

25. EA: Why? Hot area. Fun. Demand for qualified developers.
Easy to develop poor, insecure EA’s.
Gives you an edge in the job market!
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26. EA: JSP Technology Actively used by industry. Sample sites follow …
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27. EA: Airport of Montreal
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28. EA: CIBC
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29. EA: IBM
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30. EA: Toronto Stock Exchange
Uses patterns that you will learn in this course.
E.g. page controller.
E.g. page controller, as is evident in some of the URLs.
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31. Languages, Techniques, Tools
UML.
Eclipse 2.1 (Rational XDE)
Model Driven Design.
Refactoring.
JUnit: for test-driven design.
EA: Tomcat.
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SOEN 343, © P.Chalin,

32. Course Information & Resources
Syllabus: any questions?
Course web site:
Your to do list:
Register to course mailing list via course web site. Register your Concordia address.
Choose work groups (size 5).
Attend this Friday’s tutorial in H-929 or H-905.
11/23/2018
SOEN 343, © P.Chalin,