Kei Suzuki, Ryota Matsubara, Tipporn Laohakangvalvit, Midori Sugaya. Feature Comparison of Emotion Estimation by EEG and Heart Rate Variability Indices and Accuracy Evaluation by Machine Learning. Advances in Neuroergonomics and Cognitive Engineering - Proceedings of the AHFE 2021 Virtual Conferences on Neuroergonomics and Cognitive Engineering, Industrial Cognitive Ergonomics and Engineering Psychology, and Cognitive Computing and Internet of Things. 2021. 222-230
Shun-ichi Maezawa, Ryota Matsubara, Haruhide Matsuda. A Fan-type condition for graphs to be k-leaf-connected. Discret. Math. 2021. 344. 4. 112260-112260
古谷倫貴, 前澤俊一, 松原良太, 松田晴英, 土屋翔一, 八島高将. Degree Sum Condition for the Existence of Spanning k-Trees in Star-Free Graphs. Discussiones Mathematicae Graph Theory. 2020