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