2 Time Axis Design as an EcoDesign Method
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Table 2.5 Extracted temporal changes in the case study and their time scales
Patterns
Type of the time scale Design ideas
Temporal changes Countermeasures
(B)
(e)
Short
Change raincoat depending on
user’s emotion
(D)
(a)
Short
Add an attachment that supports
loads
(D)
(i)
Long
Provide a service that allows
users to change to durable bones
based on frequency of use
(E)
(d)
Long
Use water-repellent cloth
(E)
(i)
Long
Provide a service that allows
users to repairs cloth
(G)
(h)
Short
Provide umbrellas rental service
where users can borrow and
return their umbrella when it’s
sunny
(H)
(b)
Short
Change the number of bones to
cope with snow
(H)
(g)
Short
Add a function to notify users
when the rain stops
Table 2.6 Examples of design ideas
Temporal changes from use case scenario Type of the temporal
change
Type of the time scale
User
Preferences change (get
tired of umbrella design)
(B) Change of the inside
of a user
Long
Short
The luggage changes
(large/small)
(D) Change of behavioral
pattern of a user
Long
Short
Design object In long time scale,
umbrella broken (bones
breaking and cloth breaks)
and the condition of
umbrella has changed
(rusting and water repellent
function deteriorated)
(E) Change the
structure/attribute of
design object
Long
In short time scale,
umbrella changes states
(open to close)
Short
Places of use Climate changes
(G) Change the
environment in the
place of use
Long
Short
Location changes due to
the user’s movement
(H) Change the places of
use by the user
Long
Short