pdf (554 kb)

yukon.twi.tudelft.nl

pdf (554 kb)

Cognitive task analysis and

adaptive interfaces in process

control

Usability Engineering Course

IN 4083

Marc Grootjen

Marc@Grootjen.nl

TUD: 10.100


Introduction

• Measuring CTL (cognitive task load)

• Manipulating CTL – Design process

• Manipulating CTL – Real time

• Summary


Measuring CTL – The model

Old situation – Time occupied

Current situation


Manipulating CTL – Design process

actors

CTL factors

1. Time occupied

system

operator

hotel

operator

mobility

others

2. Complexity

1

timeline

t=4.30

t=5.05

Complexity

high

low pressure

alarm

steering

machine

shut down of

primairy

pump

portside

Complexity

low

announces

leakage and

asks for extra

personnel

2

receives

request for

personnel

activation of

secondary

system

communicates

with

operator 3

communicates

operator

hotel

task-set

1

operator 3

announces

cause

operator 3:

sends

personnel

task-set

2

3

3. Task switches

Tools to manipulate

CTL:

• Task allocation

• Interface support


Manipulating CTL – Real time

Task

model

Task

allocation

performed by:

Operator

model

System

model

Adaptation

model

Adaptation

strategy

Interface

adaptation

Context

model


Manipulating CTL – Real time

Task

model

Task

allocation

performed by:

Operator

model

System

model

Adaptation

model

Adaptation

strategy

Interface

adaptation

Context

model


Summary

• CTL model

• CTL method

• Manipulation in design process and real time

• Adaptive interface

More magazines by this user
Similar magazines