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