2021 - 2022 Feasibility researches on the quantitative environmental history: a case study for the crisis of the 17th-century and its comparison with other historical crises
2020 - 2021 Feasibility researches on the quantitative environmental history: a case study for the crisis of the 17th-century and its comparison with other historical crises
2020 - 2021 Astronomical Phenomena in Historical Literature
Hisashi Hayakawa, Kentaro Hattori, Mitsuru Sôma, Tomoya Iju, Bruno P. Besser, Shunsuke Kosaka. An Overview of Sunspot Observations in 1727-1748. The Astrophysical Journal. 2022. 941. 2. 1-11
Hisashi Hayakawa, Tomoya Iju, Shoma Uneme, Bruno P Besser, Shunsuke Kosaka, Shinsuke Imada. Reanalyses of the sunspot observations of Fogelius and Siverus: two ‘long-term’ observers during the Maunder minimum. Monthly Notices of the Royal Astronomical Society. 2020. 506. 1. 650-658
An implicit resistance to the Constantinian propaganda: The urban landscape of Rome in Ammianus Marcellinus
(Pacific Partnership in Late Antiquity February 2022 Zoom Conference 2022)