A Mathematical Approach to Supply Complexity Management Efficiency Evaluation for Supply Chain

Table 1

Decision Making Units.

DMU	Establishment year	Major type of business	Sales (2014)	Assets (2014)
Samsung Electronics	1969	Electrical goods	208,938	202,876
SK Holdings	1962	Telecom, energy	106,248	84,620
Hyundai Motor	1967	Automobile	84,771	133,962
POSCO	1968	Iron (steel)	61,504	78,110
LG Electronics	1958	Electrical goods	57,038	33,729
KEPCO	1961	Power transmission	54,252	148,961
KIA Motor	1944	Automobile	44,730	37,346
GS Caltex	1967	Oil refining	38,235	17,676
Hanwha	1952	Gun powder, sensor	35,574	112,542
KOGAS	1983	Natural gas	35,411	42,558
S-Oil	1976	Oil refining	27,122	933
Lotte Shopping	1970	Department store	26,687	36,462

Unit: million dollar (Source: http://fortune.com/global500/).