Concepts in design

1
Concepts in design

• Functionality and beyond

2
work organization/practice
ethnography
Task Model 1
Documents/artifacts
validity analysis
usersknowledge/behavior/needs
psychologicalknowledgeacquisition/ hermeneutics
problemanalysis/specification
specification/negotiation
Task Model 2
usabilitymeasuring
Client
constraints/opportunities
specification
feedback
early evaluation
Technology
Functionality
Scenario
Simulation
Dialog
early evaluation
maintainingconsistency
UVM
Prototype
Representation
As soon as the system is implemented
Implementation
3
Task World Ontology (Martijn van Welie)
4
EUTERPE GTA representations
5
Task models

• Pretend to describe the whole domain of design
• All
• Tasks
• Roles
• actors
• Objects
• Events

6
The UVM

• One for each role,
• But include relations to other roles (as a note
  to relate)

7
functionality

• From task model 2
• For each relevant role (i.e. when new technology
  is envisioned)
• As far as relevant for the design (i.e., what is
  new in our envisioning)
• Unit (or basic) tasks
• Related objects
• Object attributes
• Object role relations
• Events

8
Unit tasks

• From task model 2
• For each relevant role (i.e. when new technology
  is envisioned)
• Tasks that are different from task model 1 and
  not trivial

9
Objects

• things that feature in any new unit task
• As conditions
• As triggers
• Being created, changed, transferred
• That help to manage new technology
• Competences of all involved roles to the object
• Allowance to create, change, transfer, inspect

10
Events

• Trigger start or end of tasks
• Conditions for start or end
• As far as not effect of modeled tasks