1 Subjects: “...concept map...”

2 Subjects: “...powertrain concepts...”

3 Subjects: “...concept investigation...”

4 Subjects: “...energy concepts...”

5 Subjects: “...teacher conceptions...”

6 Subjects: “...multibrid concept...”

7 Subjects: “...concept map...”

8 Subjects: “...control volume concept...”

9 Subjects: “...decision support concept...”

10 Subjects: “...smart city implementation concept...”

11 Subjects: “...design concept...”

12 Subjects: “...problem-solved concept...”

13 Subjects: “...IT concept...”

14 Subjects: “...concept drift...”