April 7 This Friday: One hour of presentations (not
panel) in lieu of this class. Turn in short commentary for grade. HFAP Program: http://hfapconference.com/
Questions about design project? Data collection?
http://www.nationaldefensemagazine.org/blog/Documents/20120119%20JCIDS%20Process%20Flow%2024x60%20rev%201%200.pdf (Joint Capabilities Integration Development System – JCIDS)
Quiz Review
Back to the House of Quality Examples
Fatigue and Circadian Rhythms
Strategies for Grounding Your Design in Research
Trade-Off AnalysisHouse of Quality
But first… https://www.youtube.com/watch?v=mnUEDA6drB8
- The University of Colorado’s “Energy Efficient Engineers”, 2012
House of Quality Example
CustomerRequirements
CustomerImportance
Target Values
Light weightEasy to useReliable
AluminumParts
SteelParts
AutoFocus
AutoExposure
5 2
8 7
84 5 3
330 260 340 270
50
2030
Variant of House of Quality
House Of Quality
Technical assessment and target values
Customerrequirements
Relationship matrix
Productcharacteristics
Importance
Competitiveassessment
TradeoffMatrix
Source: Hauser, J.R., & Clausing, D. (1988). The House of Quality. Harvard Business Review, May-June, 2-14. Retreived from www.csuchico.edu/~jtrailer/HOQ.pdf.
9
Cascade the Houses to “derive your requirements”:
House ofQuality
(QFD Matrix 4)
House ofQuality
(QFD Matrix 1)House ofQuality
(QFD Matrix 2)House ofQuality
(QFD Matrix 3)
TechnicalCTQs System
CTQs ControlCTQs
Customer CTQs
Cus
tom
er
Req
uir
em
en
ts
Fu
nctio
nal
R
equ
ire
me
nts
Pro
cess
R
equ
ire
me
nts
Des
ign
C
hara
cter
istic
s
ProcessRequirements
FunctionalRequirements
Design Characteristics
OperationalCharacteristics
FunctionalCTQs
CTQ = Critical-To-Quality
Two Reasons You MayFeel Sleepy
Melatonin Factoids
The Hormone Melatonin
Adenosine
http://thebrain.mcgill.ca/flash/i/i_03/i_03_m/i_03_m_par/i_03_m_par_cafeine.html
http://thebrain.mcgill.ca/flash/a/a_11/a_11_m/a_11_m_cyc/a_11_m_cyc.html
Stress Effects on Cognition
How does fatigue affect performance?
The Yerkes-Dodson Law
High & low stress/arousal can lead to impaired performance by reducing resource availability
Novice or
Expert or
Stress Effects on Cognition
If your attention is reduced, information processing in cognitive capacity will suffer.
The Yerkes-Dodson Law:
Tunneling & lapsing can occur
here
Fatigue Effects on Cognition
attentional lapses some slowing of information processing
Attention & working memory are compromised.
Reduced Attentional Resources Cause…
Lapses in attentionSlowing of information processingInformation not processed as
‘deeply’Attentional narrowing/tunneling
“Satisficing”Task sheddingReliance on automated
performanceReliance on schemas/templates
Stress Effects on Cognition
High Arousal or Preoccupation Reduced attentional capacity Attentional tunneling
Perceptual Working memory
Reduced working memory capacity Less effective memory storage & recall
Compromised: Attention, Working Memory, Retrieval from Long Term Memory
Hancock & Warm’s Model of Stress Effects on Performance
Stress is operationalized as level of arousal
Hancock, P.A. & Szalma, J.L. (2006). Stress and Neuroergonomics. In: R. Parasuraman and M. Rizzo (Eds.),Neuroergonomics: The brain at work. Oxford: Oxford University Press (pp 195-206)
A - physiological functionB - behavior/performanceC - subjective comfortD - normative zone