UETA Tetsushi

J-GLOBAL         Last updated: Aug 8, 2019 at 19:11
UETA Tetsushi
Tokushima University
Center for Administration of Information Technology
Job title
M. Engineering(Tokushima University), Dr. Engineering(Tokushima University)
Other affiliation
Fac. Eng, Tokushima University

Published Papers

Challenges and Improvements in a Workshop-Type Class in BYOD
Hiroki Tanioka, Kenji Matsuura, Tetsushi Ueta, Fumiaki Kawano
Journal of University Education Research   (No.16) 18-23   Mar 2019   [Refereed]
Ito D, Asahara H, Kousaka T, Ueta T.
Chaos, Solitons and Fractals   111 138-145   Jun 2018   [Refereed]
DC-DC switching converters which are frequently treated as hybrid dynamical systems exhibit complex behavior due to nonlinear and interrupt characteristics. For synchronous buck-converters, we propose a method to control chaotic behavior by pulse ...
Yuu Miino, Tetsushi Ueta
Complexity   (No.8931525)    Dec 2018   [Refereed]
We conduct a bifurcation analysis of a single-junction superconducting quantum interferometer with an external flux. We approximate the current-voltage characteristics of the conductance in the equivalent circuit of the JJ by using two types of fu...
Miino Y, Ueta T, Kawakami H.
Chaos, Solitons and Fractals   111 75-85   Jun 2018   [Refereed]
The Duffing equation describes a periodically forced oscillator model with a nonlinear elasticity. In its circuitry, a saturable-iron core often exhibits a hysteresis. However, a few studies about the Duffing equation has discussed the effects of ...
Yuu Miino, Daisuke Ito, Hiroyuki Asahara, Takuji Kousaka, Tetsushi Ueta
International Journal of Circuit Theory and Applications   1-14   Oct 2018   [Refereed]
In the previous study, a method to control chaos for switched dynamical systems with constant threshold value has been proposed. In this paper, we extend this method to the systems including a periodically moving threshold. The main control scheme...


Yosuke Seki, Kenji Matsuura, Masahiko Sano, Tetsushi Ueta
IEEJ Transactions on Electrical and Electronic Engineering   13 1071-1072   Jul 2018
© 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc. It is difficult to distribute online questionnaire adequately to those subjects who satisfy the requirements of investigations. In addition, low questionnair...
堀内 拓磨, 大平 健司, 谷岡 広樹, 佐野 雅彦, 松浦 健二, 上田 哲史
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   117(472) 73-78   Mar 2018
居石 峻寛, 大平 健司, 森井 理智, 谷岡 広樹, 佐野 雅彦, 松浦 健二, 上田 哲史
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   117(472) 67-72   Mar 2018
A. Maki, L. N. Virgin, N. Umeda, T. Ueta, Y. Miino, M. Sakai, H. Kawakami
Journal of Marine Science and Technology (Japan)      Jan 2018
© 2018, JASNAOE. This research revisits the analysis of roll motion and the possible capsize of floating vessels in beam seas. Many analytical investigations of this topic have adopted the softening Duffing equation, which is similar to the ship r...
Hiroki Tanioka, Takafumi Bando, Kenji Matsuura, Kenji Ohira, Masahiko Sano, Tetsushi Ueta
Proceedings - 2017 6th IIAI International Congress on Advanced Applied Informatics, IIAI-AAI 2017   997-1000   Nov 2017
© 2017 IEEE. This paper provides a case study of improving availability for searching documents in an academic facility. Every day some documents are needed for our business and academic activities in the Center for Administration of Information T...

Research Areas


Academic & Professional Experience

Apr 2018
Vice Director (PR, Info. Plan), Tokushima University
Apr 2016
Mar 2018
Vice Director, Tokushima University
Apr 2014
Professor, Director, Info. Initiative, Center for Admin. Info. Tech
Apr 2012
Mar 2014
Director, Center for Admin. Info. Tech, Tokushima University
Jul 2010
Mar 2014
Professor, Center for Administration of Information Technology, The University of Tokushima
Visiting professor, Dept. EE, University of Houston


Graduate School, Division of Engineering, The University of Tokushima
Faculty of Engineering, The University of Tokushima


ERATO, JST, Aihara complexityl model project
2004 - 2007

Research Grants & Projects

Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(C))
Project Year: 2007 - 2008    Investigator(s): Tetsushi UETA
Controlling chaos
Analysis of Nonlinear dynamical systems and their applications
Visualization of dynamical systems
Application of chaos