DepartmentofComputerScience&Engineering;
SoutheastUniversity;
Nanjing210096;
P.R.China;
SchoolofInformationScienceandTechnology;
PENNSTATE;
UniversityPark;
PA16802;
U.S.A.;
CWI;
Kruislaan4131098SJAmsterdam;
Netherlands;
DepartmentofComputerScienceandEngineering;
FIT;
Fukuoka811-02;
Japan;