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Hisa-Aki Tanaka (田中久陽) is a scientist and engineer. He is known for his contributions to the extension of the Kuramoto equation, theoretically predicting self-synchronization with hysteretic responses, for instance, in synchronous power generators. Tanaka also discovered the fundamental limit of injection locking in general oscillators, which is a mathematical framework useful for designing more frequency-stable electrical oscillators.

Biography
Hisa-Aki Tanaka received the B.E. degree in electrical engineering and the M.E. and D.E. degrees in electronics and communication engineering from Waseda University, Tokyo, Japan, in 1990, 1992, and 1995, respectively. From 1996 to 1997, he was a Visiting Researcher with the EECS Department, University of California, Berkeley. From 1997 to 2001, he was with the Sony Computer Science Laboratory. In 2001, he joined the Department of Electronic Engineering, Faculty of Electro-Communications, The University of Electro-Communications, Tokyo, Japan, as an Associate Professor. His current research interests include synchronization issues in computing and communication systems and nonlinear physics. Dr. Tanaka received the 1995–1997 Research Fellowships of the Japan Society for the Promotion for Young Scientists. He was the recipient of the 2007, 2008, and 2010 Best Paper Award from the Telecommunications Advancement Foundation. He received the NOLTA Society Contribution Award for his contributions to establishing a new technical committee, the Complex Communication Sciences (CCS), from IEICE in 2015.

Honors and awards

 * IEICE Best PaperAward (2020)
 * IEICE NOLTASociety:Contribution Award（2015）
 * IEICE TechnicalCommittee on AdHoc NetworksYoung Researcher'sAward(2009)
 * Telecom SystemTechnology Award(2008)
 * IEICE TechnicalCommittee on AdHoc NetworksYoung Researcher'sAward（2008）
 * Telecom SystemTechnology Award(2007)