[1]College of Information and Computer Engineering;
Northeast Forestry University;
Harbin;
China;
[2]School of International Education and Exchanges;
Northeast Forestry University;
Harbin;
China;
[1]College of Information and Computer Engineering;
Northeast Forestry University;
Harbin;
China;
[1]College of Information and Computer Engineering;
Northeast Forestry University;
Harbin;
China;
[1]College of Information and Computer Engineering;
Northeast Forestry University;
Harbin;
China;
International; student; Security; warning; Management; system;