著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) RUI KITAHARA and SEIICHI SERIKAWA and LIFENG ZHANG,Estimating Behavior Considering Multiple Possession Positions of smartphones Using Machine Learning,Journal of the Institute of Industrial Applications Engineers,21881758,[北九州] : The Institute of Industrial Applications Engineers,2022-01,10,1,23-28,https://cir.nii.ac.jp/crid/1520294276438092160,