*Vertices 5
1 "中国安全科学学报" 0.0 0.0 0.0 x_fact 2.542373 y_fact 43.825666
2 "东北林业大学学报" 0.0 0.0 0.0 x_fact 0.121065 y_fact 10.169492
3 "煤炭学报" 0.0 0.0 0.0 x_fact 1.452785 y_fact 7.990315
4 "农业环境科学学报" 0.0 0.0 0.0 x_fact 0.121065 y_fact 19.249395
5 "安全与环境学报" 0.0 0.0 0.0 x_fact 1.815981 y_fact 18.765133
*Matrix 
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