– Zirui Liang, Ryuichi Shibasaki, Optimizing empty container repositioning on a liner service network considering foldable containers, Biannual Conference on Infrastructure Planning and Management, JSCE, 64, 7425, 3 December 2021, online

– Chathumi Ayanthi Kavirathna, Ryuichi Shibasaki, Wenyi Ding, Natsuhiko Otsuka, Multi-objective optimization in deciding vessel navigation speeds and emission control measures for Arctic shipping, Biannual Conference on Infrastructure Planning and Management, JSCE, 64, 7044, 3 December 2021, online

– Wencong Zhao, Kaiping Luo, Renqian Zhang, Ryuichi Shibasaki, A variable neighborhood search algorithm based on simulated annealing for a municipal solid waste collection and transportation problem considering split delivery, Biannual Conference on Infrastructure Planning and Management, JSCE, 64, 7065, 3 December 2021, online

– Wenyi Ding, Ryuichi Shibasaki, Chathumi Ayanthi Kavirathna, The impact of NSR on China’s grain bulk import with EU, the Annual Autumn Meeting of The Japan Society of Naval Architects and Ocean Engineers (JASNAOE), 29-30 November 2021, online

– Ryuichi Shibasaki, Logistics analysis using maritime big data, The 21st Port Symposium in Northeast Asia, 24 November 2021, online [invited] (keynote speech)