About the Authors

Yoshikazu Yamanaka

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Validation, Visualization, Writing – original draft, Writing – review & editing

yyamanaka@cc.utsunomiya-u.ac.jp

Affiliation Department of Mechanical and Intelligent Engineering, Utsunomiya University, Utsunomiya, Tochigi, Japan

Katsutoshi Yoshida

Roles Conceptualization, Formal analysis, Funding acquisition, Methodology, Resources, Supervision, Validation, Writing – review & editing

Affiliation Department of Mechanical and Intelligent Engineering, Utsunomiya University, Utsunomiya, Tochigi, Japan

Competing Interests

The authors have declared that no competing interests exist.