1 Subjects: “...national travel...”

2 Subjects: “...MINT nations...”

3 Subjects: “...national system of innovation...”

4 Subjects: “...national and global efforts...”

5 “... that can be implemented in national, regional or even local energy systems at different implementation...”

6 “... strategic priority at local, national, European, and global levels. This Special Issue will pay attention...”

7 “... Development Goals (SDGs) set by the United Nations (UN). There are lots of challenges to developing modern...”