4 EMPIRICAL ANALYSIS
4.1 Introduction to Case
This paper takes the PKM project undertaken by
China State Construction Group Co., Ltd. in Pakistan
as the case, and makes an empirical analysis of the
social responsibilities undertaken by Chinese
overseas construction enterprises in the construction
process, so as to test the fulfillment of the social
responsibilities of the enterprises in the construction
process.
The PKM project (Sukkur-Multan section) starts
from Sukkur City of Sindh Province in the south and
ends in Multan, the economic center of Punjab
Province in the north, with a total length of 392km. It
is designed as a two-way 6-lane highway with ITS
(Intelligent Transportation System) and access
control. It is the first highway in Pakistan adopting
ITS, with a contract value of $2.889 billion. EPC
contract mode is adopted, and the contract period is
36 months. In the process of construction, there are
difficulties in project organization, design
communication and coordination, technical
difficulties, construction resources organization,
severe security situation and other engineering
construction difficulties.
4.2 Treatment of Standardization
Part of the data selected in this paper are from the
social responsibility reports released by enterprises,
such as the quality acceptance rate of overseas project
and tax rate on assets, etc. Some of them come from
within the enterprise and are obtained through
communication with the enterprise, such as the
customer satisfaction rate and labor contract signing
rate of overseas employees. And we choose expert
scoring to identify some unavailable data, qualitative
indexes and indexes requiring comprehensive
analysis. According to the rating value of the
evaluation factors, the comment set is adopted
accordingly, and the evaluation set is established
according to the evaluation index system. Finally, the
comment set is quantified and expressed by the
hundred-mark system interval, that is, "excellent,
good, general, poor, very poor" corresponds to the
ideal score of each evaluation level, which is
[100,90], (90,80], (80,70], (70,60], (60,0]
respectively.
Since the dimensions of each evaluation index
data is different, it is necessary to carry out
dimensionless processing. In this paper, extreme
value method is selected, and the specific method is
as follows:
(1) Processing of positive indexes. Set the index
standardized score corresponding to the maximum
value of each index of social responsibility of
overseas construction enterprises to 100 points, and
the index standardized score corresponding to the
minimum value to 60 points. And the standardized
scores of other indexes corresponding to the value of
this index are obtained with the linear difference
between 60 and 100 points.
()
()
ii
ii
i
CB
BX
E
−
−
+=
*40
60
(8)
(2) Processing of negative indexes. Set the index
standardized score corresponding to the minimum
value of each index of social responsibility of
overseas construction enterprises to 100 points, and
the index standardized score corresponding to the
maximum value to 60 points. And the standardized
scores of other indexes corresponding to the value of
this index are obtained with the linear difference
between 60 and 100 points.
()
()
ii
ii
i
CB
XB
E
−
−
+=
*40
60
(9)
Finally, the comprehensive evaluation value of
social responsibility of this case is obtained by
summing up the product of the standardized score of
each index and its weight.
=
=
21
1
*
i
ii
WEF
(10)
(3) Standardization of qualitative indexes.
Qualitative indexes are difficult to be processed by
quantitative standards, so the qualitative indexes are
scored according to the opinions of relevant experts,
as shown in Table 3.
Table 3: Evaluation criteria of qualitative indexes.
Index [0,60) [60,70) [70,80) [80,90) [90,100]
A
12
very
imperfect
less perfect general
relatively