122
M. Zolfaghari and S. J. Zafarmand
Table 8.2 (continued)
Dimensions Indicators
Impact Units
Toyota
yaris
Determinants References
Fuel price
–
USD/km
0.0295 Vehicle
gasoline price
for each
kilometer
Jeon and
Amekudzi
(2013)
Users
Service
satisfaction
+
Number
767
Satisfaction of
vehicle after
sales service
Reisi et al.
(2014)
Dissatisfaction
ratio
–
Number
0.0147 Satisfaction
drop after one
year of using
vehicle
Reisi et al.
(2014)
where I S,j is the sustainability dimension for a group of indicators j (environmental,
j = 1, technological,j = 2, energical, j = 3, economical, j = 4, users, j = 5). W ji is
the weight of indicator i for the group of sustainability indicators j and reflects the
importance of this indicator in the sustainability assessment of the company. Finally,
the sustainability dimensions are combined into I Ov within Eq. (8.4).
I OV =
n
j
w j · I s,j
(8.4)
In many overall indicators, all variables are given the same weight largely for
reasons of simplicity (De 1992). It means that all indicators in the composite have
equal importance. Equal weighting is one of the ways for calculating overall indicators (Saisana 2011). In this research the dimensions and indicators weighted equal.
Selecting a set of indicators that provides a holistic picture of the considered system
is challenging (Castillo and Pitfield 2010). There are several indicators. Having no
sufficient date about some of the indicators was the reason for omitting them. In
some parts indicator values were replaced with local data. The objective of sustainable urban transport changes with the context, locality, time, and specific knowledge
(Castillo and Pitfield 2010).
8.3.1.7 Sustainability Level
After calculating each vehicle overall sustainability dimensions (I Ov ) and sorting
them, the sustainability level of each vehicle beside the other samples is determined.
Sorting from largest to smallest sustainability levels, in order to compare the samples
sustainability levels, all samples are divided into 3 groups: high sustainable, middle
sustainable and low sustainable.
M. Zolfaghari and S. J. Zafarmand
Table 8.2 (continued)
Dimensions Indicators
Impact Units
Toyota
yaris
Determinants References
Fuel price
–
USD/km
0.0295 Vehicle
gasoline price
for each
kilometer
Jeon and
Amekudzi
(2013)
Users
Service
satisfaction
+
Number
767
Satisfaction of
vehicle after
sales service
Reisi et al.
(2014)
Dissatisfaction
ratio
–
Number
0.0147 Satisfaction
drop after one
year of using
vehicle
Reisi et al.
(2014)
where I S,j is the sustainability dimension for a group of indicators j (environmental,
j = 1, technological,j = 2, energical, j = 3, economical, j = 4, users, j = 5). W ji is
the weight of indicator i for the group of sustainability indicators j and reflects the
importance of this indicator in the sustainability assessment of the company. Finally,
the sustainability dimensions are combined into I Ov within Eq. (8.4).
I OV =
n
j
w j · I s,j
(8.4)
In many overall indicators, all variables are given the same weight largely for
reasons of simplicity (De 1992). It means that all indicators in the composite have
equal importance. Equal weighting is one of the ways for calculating overall indicators (Saisana 2011). In this research the dimensions and indicators weighted equal.
Selecting a set of indicators that provides a holistic picture of the considered system
is challenging (Castillo and Pitfield 2010). There are several indicators. Having no
sufficient date about some of the indicators was the reason for omitting them. In
some parts indicator values were replaced with local data. The objective of sustainable urban transport changes with the context, locality, time, and specific knowledge
(Castillo and Pitfield 2010).
8.3.1.7 Sustainability Level
After calculating each vehicle overall sustainability dimensions (I Ov ) and sorting
them, the sustainability level of each vehicle beside the other samples is determined.
Sorting from largest to smallest sustainability levels, in order to compare the samples
sustainability levels, all samples are divided into 3 groups: high sustainable, middle
sustainable and low sustainable.