1 Subjects: “...knowledge economy (knowledge-based economy)...”

2 Subjects: “...green economy...”

3 Subjects: “...bio-economy...”

4 Subjects: “...blue economy...”

5 Subjects: “...blue economy...”

6 Subjects: “...marine economy...”

7 Subjects: “... economics and emerging economies...”

8 “.... The papers cover three essential areas: engineering, economy, and management. We hope that a summary...”