CS123 Engineering Computation LabLab 1

Bruce Char

Department of Computer Science

Drexel University

Spring 2010

Welcome Back to CS123

• Goals and objectives for this term – by the end of this term, students should be able to :

– Develop code scripts and programs using Maple’s “procedure” (proc) feature, including creation of time staged simulations

– Use Maple’s Optimization feature to solve differential calculus problems involving maximum and minimum (optimal) solutions

– Work with application programming interfaces (API’s)

CS123 – Basic Schedule

• 4 labs in even numbered weeks (2, 4, 6 and 8)• 4 quizzes in odd numbered weeks (3, 5, 7 and 9)• 4 pre-lab quizlets in weeks (1, 3, 5 and 7)• Proficiency Exam in week 10• Flow of course similar to cs121 and cs122• Be sure to review contents of course web site for details

– www.cs.drexel.edu/complab/cs123/spring2010

What’s New in CS123?

• Different focus for Chat sessions– Discontinuation of formal on-line chat sessions– Will still be publishing hint sheets for most challenging

quiz problems• Additional consultation activity

– Tim Cheeseman and Dan De Sousa will again coordinate – goal is to significantly expand participation

– By invitation, based on cs122 Winter term performance

– Selected students will be contacted by end of week 2 via email

Administrative Notes

• Please contact your individual instructors with questions and problems

• CLC (room 147 UC) will be staffed at same times as for cs122 in Winter (odd weeks – starting week 3)– Note that CLC is also staffed on Thursdays and Fridays

• Missed work policies – same as in cs121 and cs122– Makeup labs to be held on Monday at 6 PM (odd weeks). Must

receive explicit approval from your instructor in order to attend!– Makeup quiz offered (30% penalty) – Thursday through Sunday

after completion of regular quiz• No excused quizzes due to MapleTA login issues – please resolve

any such issues immediately

– No makeup quizlets

Lab 1 Overview

• Based on materials from Chapter 15 readings – writing programs as functions

– Review of user defined function syntax and usage– Creating functions with Maple’s procedure feature

• Use of global and local variables

• Use of “if” and “looping” statements

• Transforming scripts into procedures

• Troubleshooting within procedures

Lab 1 Overview

• Lab 1 outline

– Part 1.1 – building a time staged simulation program from specifications• In prior labs/quizzes, we encountered time staged simulation scripts:

– Prey-predator problem– Moving particle and bouncing ball– Chemical reaction

• In today’s lab, we will develop a simulation to model the cooling of a house• Starter script provided – must add logic to perform a time staged analysis using

specified modeling relationships along with plots of the temperature profiles

– Part 1.2 – extend the cooling simulation to include thermostat and air flow control functions

• Will modify script created in Part 1.1 to incorporate these controls in the form of Maple procedures

– The overall simulation model is described in depth in the introduction portion of the lab description

Lab 1 Maple Concepts:Discussion and Demo

• Demo of Maple features needed for this lab

– Open the Maple worksheet demo file form the course web site• CS123Lab1Demo.mw

– The following concepts are illustrated• User defined functions versus Maple procedures – comparison of

syntax, pros and cons and invocation

• Review of key constructs and logic associated with the time staged chemical reaction simulation from Lab 2 in cs122

– Analogous to code involved in today’s house cooling simulation

Quiz Week (3) Activities

• Quiz 1 will be released on Friday (4/9) at 6 PM– Deadline: Wednesday (4/14) at 4:30 PM– Makeup quiz – from Thursday (4/15) at 9 AM through

Sunday (4/18) at 11:30 PM• 30% penalty

• Pre-lab 2 quizlet – From Thursday (4/15 – noon) through Monday (4/19 –

8 AM)• Be sure to visit the CLC for quiz or general

Maple assistance• Be on alert for information regarding extra

consultation initiative