An optimized multi-duration HMM for spontaneous speech recognition. - Yuichi Ohkawa; Akihiro Yoshida; Motoyuki Suzuki; Akinori Ito; Shozo Makino (INTERSPEECH, 2003)

Speaker adaptation method for CALL system using bilingual speakers' utterances. - Motoyuki Suzuki; Hirokazu Ogasawara; Akinori Ito; Yuichi Ohkawa; Shozo Makino (INTERSPEECH, 2004)

A speaker adaptation method for non-native speech using learners' native utterances for computer-assisted language learning systems. - Yuichi Ohkawa; Motoyuki Suzuki; Hirokazu Ogasawara; Akinori Ito; Shozo Makino (Speech Commun., 2009)

Aspect-model-based reference speaker weighting. - Seongjun Hahm; Yuichi Ohkawa; Masashi Ito; Motoyuki Suzuki; Akinori Ito; Shozo Makino (ICASSP, 2010)

Improved Reference Speaker Weighting Using Aspect Model. - Seongjun Hahm; Yuichi Ohkawa; Masashi Ito; Motoyuki Suzuki; Akinori Ito; Shozo Makino (IEICE Trans. Inf. Syst., 2010)

Speech Recognition under Multiple Noise Environment Based on Multi-Mixture HMM and Weight Optimization by the Aspect Model. - Seongjun Hahm; Yuichi Ohkawa; Masashi Ito; Motoyuki Suzuki; Akinori Ito; Shozo Makino (IEICE Trans. Inf. Syst., 2010)

A Development of Web-Based Player for Instructions Recorded with the Electronic Blackboard System IMPRESSION. - Yuichi Ohkawa; Takashi Mitsuishi (HCI (4), 2011)

Study on Effects of Text Decoration for a Text Based Communication Tool in Education. - Masateru Hishina; Katsuaki Miike; Nobutake Asaba; Satoru Murakami; Yuichi Ohkawa; Takashi Mitsuishi (HCI (1), 2013)

A Shareable Whiteboard System for Distance Collaborative Learning which Enables Instruction for Multiple Groups of Students. - Yuichi Ohkawa; Kazuki Watanabe 009; Takashi Mitsuishi (ICCE, 2014)

Study on UX design in enhancing student motivations in mobile language learning. - Jarmo Seppälä; Takashi Mitsuishi; Yuichi Ohkawa; Xiumin Zhao; Marko Nieminen (TALE, 2020)

Enhancing Mobile Learning App for Revamped Blended Learning Class in Beginner's Chinese Course. - Yuichi Ohkawa; Xiumin Zhao; Takashi Mitsuishi; Wen Gui; Xuan Wang (ICCE, 2023)

Consideration of On-Demand Online Exam-Taking Methods that Promote Continuous Learning. - Takuro Ozaki; Yuichi Ohkawa; Takashi Sato 005; Takashi Mitsuishi (TALE, 2023)

Measuring Motivational Pattern on Second Language Learning and its Relationships to Academic Performance: A Case Study of Blended Learning Course. - Zahra Azizah; Tomoya Ohyama; Xiumin Zhao; Yuichi Ohkawa; Takashi Mitsuishi (IEICE Trans. Inf. Syst., 2023)

Predicting at-risk students in the early stage of a blended learning course via machine learning using limited data. - Zahra Azizah; Tomoya Ohyama; Xiumin Zhao; Yuichi Ohkawa; Takashi Mitsuishi (Comput. Educ. Artif. Intell., 2024)