1 Subjects: “...keywords analysis...”

2 Subjects: “...qualitative analysis...”

3 Subjects: “...life-cycle analysis...”

4 Subjects: “...multidimensional statistical analysis...”

5 Subjects: “...policy scenario analysis...”

6 Subjects: “...cost analysis...”

7 Subjects: “...content-based analysis...”

8 Subjects: “...risk analysis...”

9 Subjects: “...keyword network analysis...”

10 Subjects: “...keyword network analysis...”

11 Subjects: “...perception analysis...”