2018年10月 Best Paper Award Silver Medal 32nd Annual Conference of the Asian Association of Open Universities (AAOU2018) Masumi Hori, Seishi Ono, Toshihiro Kita, Hiroki Miyahara, Shiu Sakashita, Kensuke Miyashita, Kazutuna Yamaji, Tsuneo Yamada タイトル Crowdsourced learning based on learning economy