1. IEEM 552 - Human-Computer Systems Dr. Vincent Duffy - IEEM Week 14 - Last paper ‘visual fatigue’, discussion about subject testing, take home and final exam, May 11, 1999 http://www- ieem.ust.hk/dfaculty/duffy/552 email: vduffy@ust.hk

2. For tonight n Thank you to all for your cooperation! n Turn in project report n final presentation ‘visual fatigue’ from the Human Factors journal n discussion about subject testing n discussion about takehome n discussion about final

3. For tips see Cody and Smith n 1. See Chapters 7- for 1 way Anova analysis (to test if the ‘level of windows experience’ is related to ‘software satisfaction’, ‘perceived workload’, ‘perception of wasted time’ or ‘no. of comments’. n Data and sample sas program provided on webpage. n 2. first see Ch2.H for testing if the satisfaction and workload data is normal (report result) n 3. see Ch.10 A-D. to see which items make a factor (for satisfaction) and report result

8. n On webpage: u two sas files: test.sas, factor.sas u data file: subjmod3.txt F if you decide to work with these, make sure you modify the ‘path’ of the data file in your sas program before running the sas program. F Tonights notes u Week 16 May 25 Final Exam room 2302 F 6:45-9:30 pm

9. Final exam discussion n Takehome 10 points u 1-2 pages written, title page and appendices if necessary (not required)…see handout n 30 points - exam I material n 60 points - after midterm u week 9 approaches to HCI u week 10 mental workload u week 11 interpreting results u week 12 visual C++/thinking aloud u week 13 working in groups u readings: emphasis on readings after midterm

10. Aljdkfjadjfijakfja lkfjdklfjldajfklsdjfksadj fjaksdjfkjaslkfja akdjfkjsdlkfias White bckgrnd 62.8cd/m 2 Characters 5.7 cd/m 2 Background/foreground 11:1 In Human Factors paper

11. White wall 30 cd/m 2 Lathe 13 cd/m 2 Background/foreground 3:1

12. Black wall 6.3 cd/m 2 Lathe 13 cd/m 2 Background/foreground 1:2

13. 3rd condition Background/foreground : somewhere in between 3:1 and 1:2. It was the 1:2 (ex2, dark) condition modified modified by changing contrast to 67 (from 100), brightness to 78 (from 31)