Set Phasers on Stun & Leap of Faith
1. The Set Phasers on Stun case points to the dangers of software control of safetycritical systems. The medical personnel who used the Therac-25 radiation
machine also made decision-making errors.
05-413: Human Factors
Case Assignment 4
1. Fault Tree Diagram (See attached page at end)
2. Problems of Attention (Lecture 8: Visual Attention Part 1, Slide 7)
One problem of attention that could have contributed to the events that caused the
Human Factors Case 7
November 11 2012
1. In what ways is work as an EMT similar or different from the kind of work you do as a
WLLB, Chapter 10 (266-267)
The case deeply outlined a major problem for EMTs: back and shoulder pain. EMTs have to
e top node describes the loss and that is the death and harm of the residents of Bhopal. To specify, at
least 2,500 residents of Bhopal died in the early morning and tens of thousands more suered irreparable
respiratory and neur
e product that I chose to focus on was the card reader all over the Carnegie Mellon campus.
e situation that occurs with this card reader is that students must dip cards into in order
access dierent locations/facilities.
Human Factors - Assignment 6
The first time I visited Carnegie Mellon University, 2 years ago, I thought that the campus was
very small and was confused by that. When I entered the different buildings, they all seemed
pretty standard until I entered the G
Assignment 8 - Grocery Warehousing
1. What are the most important hazards of the workplace described above?
The most important hazards of the workplace described in the case are:
a. Employees repeatedly bend forward at the waist to place box
The Vending Machine Problem
Human Factors: 05-413
Vending machines are machines which dispense items such as snacks, beverages, lottery tickets, and even more to
customers automatically, after the customer inserts currency or cre
Sequence of Activity
have a proper
of that payment
Take wallet out / have method
of payment at hand
Insert method of payment into
Wait for change to dispense
and retrieve change
THE VENDING MACHINE PROBLEM
Why are option entries so similar?
Why are both displays complex?
Why cant I control one display?
Why is it hard to retrieve my
User forgot to
after the snack
Gates is known formally as Gates-Hillman Center
Youre on the 5th floor
STAY ON 5TH
TO NEWELL-SIMON HALL
SCS Deans Office
Take staircase to 4th
Walk until you see a bridge