1 “... to understand human behavior and its consequences. Despite the great efforts made in the past in the study...”

2 “... during the past 30+ years. The aim of this Special Issue of Systems is to contribute to a stronger...”

3 “..., with the advantages of fast speed, convenient operation, and easy online inspection. During the past two decades...”

4 “.... These factors take RED II directives into consideration. In the past, forestry interventions were the main...”