Mini lecture notes, class 3 Course organization [3
Mini lecture notes, class 3 Course organization [3 min] got group members? (put group number on hwk) got the book?
Lego exercise [5+5] Reprise Kegworth [15min] How to read a book, 5.2.3 (PQ4R) [10min] So, preview preface, and preview conclusions soon Chapter 1  why study the user?
risk better design help you be a team member/user
ABCS not covered: emotions, esthetics when? How much do you have to study the user? Chapter 2  CHI, HCI, HF, cog. Ergonomics, systems, user-centered design
Course project reminder [20 min.] What causes a plane to crash? A laundry list is required, or, a swiss cheese loaf lined up A lot, in safety critical systems Kegworth Air Disaster Why?
Near Ritter, Baxter & Churchill A lovely example Often used Storyline Flight, jan 1989, Heathrow to Belfast, Midland 192 Experienced pilots, new plane (737) Part of one of the safest systems in the world
Upon take-off, no problems Shuddering, fire in an engine at ~10 min. Shut off #2 engine, RHS (the good one!) This is the pilot error Hardware and Mischance badly designed new engine, failure at 3 months, approx. t=300 h, should be t=500,000 h, not tested at altitude /unlucky choice of diversion airport
[BMI hub] Auto throttle problem poor mental model of plane [system] (turned off good engine, which disengaged autothrottle, solving the judder problem) lack of engine feedback [interface design] Vibration Dial 1
vibration dial harder to read [design] vibration dial not required to fly [regulation] dial and plane not trained with simulator technology updated but not announced Vibration Dial 2 vibration dial small [design] Without range
marking [design] During descent lots of interruptions pilots cant see the engines no protocol: no checking/confirmation visually from cabin Passengers could see fire but explained it away, perhaps also flight attendants
diffusion of social responsibilities Social distance between aircrew and pilots crash 900 m short 43+4 out of 118+8 die +1 in 2012 (PTSD) At crash Not documented: noise abatement hillocks
Afterwards If any 13or 3 missing, no loss of life What was the pilot error? Thus, systems require understanding people, technology, and systems and environment References Wikipedia on kegworth
BBC. (1991). Fatal error: Taking liberties [television series]. Youtube has videos as well How to read a book, 5.2.3 (PQ4R) So, preview preface, and preview conclusions soon 1.3 So, when to study the user?
Fundamental attribution error of design More usable $$ Safer Risk driven Not like you
Lives at risk Know enough given cost of knowing more (satisficing) The ABCS Anthropometrics Behavioral The senses Motivation
Cognition Social System The system (pre-HCI) The system and user (early HCI) The system and what we know about the user (U-CS)
Another way to organize the user The system (pre-HCI) The system and user (early HCI) The system and what we know about the user (U-CS) Chapter 2
QuickTime and a decompressor are needed to see this picture.
Choice Architecture 101. ... People tend to overweight the costs of a cab ride and underweight the full costs of having a car. A tax on energy use will have a bigger effect if the thermostat tells the user the...
Presentation of Knowledge and Ideas: Present information, findings, and supporting evidence such that listeners can follow the line of reasoning and the organization, development, and style are appropriate to task, purpose, and audience.
Same as the clustered bar except that the different coloured bars are stacked on top of each other rather than being side by side. Also the same as the clustered bar except that the second grouping variable is by an...
Blending with Mixed Constraints help production managers blend resources (grass seeds, desserts, horse food, …) when constraints restrict permissible blends by a mixture of minimal and maximal product characteristics (shade tolerance, calories, vitamin content, …).
Environmental Health Institute - July, 2006 University of Rochester Medical Center i Can't Hear You David R. Kleehammer Brockport High School An ear An iPod A cochlea and Pete Townsend Environmental Health Environmental Health studies how the environment influences human...
Covalent Bonding Sharing is caring Types of Bonds Review Metallic Ionic Covalent Transfer Electrons Delocalized Electrons (sea of e-) Share Electrons Molecule Unit Cell Electronegativity and bond types Another way to usually tell whether a bond is ionic or covalent...
iMegaphone. Her fist studio album, iMegaphone, released in 1998 was largely self-produced, although some tracks included collaboration with David Kahne, Dave Stewart and Guy Sigsworth with whom she had previously worked with in a band called Acacia.
Ready to download the document? Go ahead and hit continue!