Abstract Collection of the 2017 International Symposium on Nonlinear Theory and Its Applications (NOLTA2017)

Abstract Collection of the 2017 International Symposium on Nonlinear Theory and its Applications (NOLTA2017)

Cancun International Convention Center, Cancun,´ Mexico December 4–7, 2017. Abstract Collection of NOLTA2017 ⃝C IEICE Japan 2017 Typesetting: Data conversion by the authors. Final processing by T. Tsubone and W. Kurebayashi with LATEX. Printed in Japan

2 Contents

Welcome Message from the General Chairs ...... 6 Technical Program Chair’s Message ...... 7 Organizing Committee ...... 8 Technical Program Committee ...... 9 Advisory Committee ...... 10 NOLTA Steering Committee ...... 11 Special Session Organizers ...... 12 Symposium Information ...... 14 Symposium Venue ...... 14 Social Events ...... 14 Session at a Glance ...... 16

Abstracts 19 A0L-A Plenary Talk 1 ...... 19 A1L-A Theory and Learning Applications of Koopman Operator Formalism ...... 19 A1L-B Systems Theory and its Applications ...... 20 A1L-C Complex systems, complex networks and bigdata analyses ...... 21 A1L-D Advanced Theory and Applications Related to Communication Quality ...... 23 A1L-E Neuromorphic Systems and Electronic Devices 1 ...... 24 A2L-A Network Function for Physically and Logically Coupled System ...... 25 A2L-B Circuits and Systems / Analog and digital devices ...... 26 A2L-C Neural Networks / Biological Engineering ...... 27 A2L-D Complex Communication Sciences 1 ...... 28 A2L-E Neuromorphic Systems and Electronic Devices 2 ...... 29 A3L-A Radio and Optical Wireless Communications 1 ...... 30 A3L-B Complex Networks and Systems / Image and Signal Processing ...... 32 A3L-C Laser Dynamics and Complex Photonics 1 ...... 34 A3L-D-1 Complex Communication Sciences 2 ...... 35 A3L-D-2 Complex Networks and Systems / Image and Signal Processing ...... 36 A3L-E-1 Neuromorphic Systems and Electronic Devices 3 ...... 37 A3L-E-2 Machine Learning / Evolutionary computations ...... 37 B0L-A Plenary Talk 2 ...... 39 B1L-A-1 Synchronization (SS) ...... 39 B1L-A-2 Synchronization (RS) ...... 40 B1L-B-1 Dynamical Brain and the Information Processing ...... 40 B1L-B-2 Neurodynamics / Learning and memory ...... 41 B1L-C Laser Dynamics and Complex Photonics 2 ...... 42 B1L-D-1 Dynamical Networks and Structure ...... 43 B1L-D-2 Control and robotics ...... 44 B1L-E Chaos and Bifurcation ...... 45 B2L-A Nonlinear waves and localizations 1 ...... 46 B2L-B Cellular Dynamical Systems 1 ...... 47 B2L-C Optimization Algorithms with Nonlinear Dynamics 1 ...... 48 B2L-D Nonlinear Circuits Distributed and Coupled across Nontrivial Network Topologies 1 ...... 49 B2L-E Radio and Optical Wireless Communications 2 ...... 50 C0L-A Nonlinear waves and localizations 2 ...... 51 C0L-B Cellular Dynamical Systems 2 ...... 52 C0L-C Optimization Algorithms with Nonlinear Dynamics 2 ...... 53

3 C0L-D Nonlinear Circuits Distributed and Coupled across Nontrivial Network Topologies 2 ...... 54 C0L-E Radio and Optical Wireless Communications 3 ...... 55 C1L-A Plenary Talk 3 ...... 55 C2L-A Switched Dynamical Systems: Modeling, Analysis, and Applications ...... 56 C2L-B Complex Networks and Systems ...... 57 C2L-C Applied Mathematics / Self-Validating Numerics ...... 58 C2L-D Deep Learning / Optics ...... 59 C2L-E-1 Recent Progress in Optimization Algorithms using Nonlinear Techniques ...... 60 C2L-E-2 Optimization / Oscillations ...... 61

Author Index 63

4 2017 International Symposium on Nonlinear Theory and its Applications

Cancun International Convention Center, Cancun´ , Mexico December 4–7, 2017

Organizer: NOLTA Society, IEICE

In Cooperation with: Technical Group on Nonlinear Problems, IEICE Technical Group on Complex Communication Sciences, IEICE Technical Group on Circuits and Systems, IEICE

5 Welcome Message from the General Chairs

Bienvenidos a Cancun,´ Mexico,

Mekishiko no Kankun e yokoso,¯ Welcome to Cancun, Mexico

Dear Participants of NOLTA 2017, On behalf of my co-Chair, Prof. Hisato Fujisaka from Hiroshima University, and the organizing committee, we sincerely welcome all of you to Cancun,´ Mexico and to the 2017 International Symposium on Nonlinear Theory and Its Applications (NOLTA2017). This is the 27th NOLTA Symposium organized by the NOLTA Society, IEICE. Since the 1st NOLTA in 1991, NOLTA has been held not only in Japan, but also in various places: Canada, China, Germany, Hungary, Italy, Poland, Spain, Switzerland, and USA. It is now our great honor to organize the NOLTA2017 in Cancun,´ Mexico.

The island of Cancun´ was originally known to its Maya inhabitants as Nizuc (Yucatec Maya [ni su uk]) meaning either “promontory” or “point of grass”. In the years after the Conquest, much of the Maya population died oﬀ or left as a result of disease, warfare, piracy, and famines, leaving only small settlements on Isla Mujeres and Cozumel Island.

The name Cancun, Cancum or Cankun ﬁrst appears on 18th-century maps. The meaning of Cancun´ is unknown, and it is also unknown whether the name is of Maya origin. If it is of Maya origin, possible translations include “Place/Seat/Throne of the Snake” or “Enchanted Snake”. Snake iconography was prevalent at the pre-Columbian site of Nizuc.

The aim of NOLTA2017 is to offer a forum for a multi-disciplinary meeting bringing together leading physicists, chemists, and engineers in the field of Nonlinear Science and its Applications. The meeting is expected to gauge the forefront of technological developments in the field and to foster new cooperative links between leading research groups throughout the world, in Asia, Europe, Canada, the U.S., Mexico and South America. As a reflection of the interdisciplinary nature of NOLTA2017, the technical program includes a comprehensive multi-disciplinary technical program with a large number of special session papers (across a wide span of applications), regular session papers and a presentation for the best student awards. On behalf of my co-Chair, Hisato Fujisaka, I would like to thank the Technical Program Chairs, Prof. Kiyohisa Natsume (Kyushu Institute of Technology) and Dr. Visarath In (Space and Naval Warfare Center, San Diego), who have out together a technical program of the highest quality spanning three days of lecture sessions that cover all subjects of interest in the field of nonlinear science and engineering. Also, we would like to thank the efforts of our Special Session Chairs, Prof. Luciano Buono (University of Ontario Institute of Technology) and Prof. Hiroyuki Torikai (Kyoto Sangyo University). We acknowledge the rest of the committee: Finance Chair and Secretary, Prof. Hidehiro Nakano and Prof. Nobuyoshi Komuro; Publication co-Chairs, Secretary and Publicity Chair, Prof. Maria Leite, Tadashi Tsubone, Wataru Kurebayashi, and Takashi Matsubara; and the General co-Secretaries: Prof. Hugo Gonzalez, Prof. Masahiro Wada, and Prof. Takeshi Kamio. Thank you all for your participation in NOLTA2017. Enjoy the meeting and Cancun.´

Antonio Palacios Hisato Fujisaka San Diego State University Hiroshima City University General co-Chair, NOLTA 2017 General co-Chair, NOLTA 2017

6 Technical Program Chair’s Message

On behalf of the Technical Program Committee (TPC), welcome to 2017 International Symposium on Nonlinear Theory and Its Applications (NOLTA2017) at Cancun,´ where is one of the most famous resort in Mexico!

A total of 206 papers have been received from 13 countries and 198 papers are included for presentations in the technical program. We have 41 oral sessions including 29 special sessions. Additionally, it is my pleasure to have three exciting Plenary Talks by Professor Andrea L. Bertozzi, University of California Los Angeles, Professor Adilson E. Motter, Northwestern University, and Professor Kurt A. Wiesenfeld, Georgia Institute of Technology.

Our program can cover hot topics in variety of research areas, which gather under the term of ‘Nonlinear’. I would like to express my appreciation for all authors who submitted papers to NOLTA 2017. It is one of the traditional features of the technical programs in NOLTA that many special sessions are organized by leading researchers. The special sessions from wide research areas may raise new collaborations among symposium participants, which is quite important for succeeding NOLTA2017. I would like to express my thanks to the special session organizers and presenters. In addition, organizing and coordinating of NOLTA2017 are impossible without contributions and services of review committee members, reviewers, and session co-chairs. I am also equally thankful for Tom Wehner’s support of web-based services. The poster area appears for ﬁnding NOLTA2017 student paper award winners, which is the second trial in NOLTA history. All the participants including students have a right to recommend the award-winner candidates. Please visit the poster area, discuss with students, and vote the award-winner candidates on the third day of the conference. Finally, I would like to announce the Special Section related with NOLTA2017, which will be published in NOLTA, IEICE at April, 2019. The paper submission deadline is July 10, 2018. I hope that all authors, especially students, consider to submit the extended version of papers in this program to the Special Section. I really hope participants to attend as many activities as possible, exchange and discuss ideas, enjoy the technical program and NOLTA2017!

Kiyohisa Natsume Kyushu Institute of Technology Technical Program Co-Chair, NOLT2017

7 Organizing Committee

GENERAL CO-CHAIRS Antonio Palacios (San Diego State University) Hisato Fujisaka (Hiroshima City University)

TECHNICAL PROGRAM CO-CHAIRS Visarath In (SPAWAR) Kiyohisa Natsume (Kyushu Institute of Technology)

TECHNICAL PROGRAM SECRETARY Katsumi Tateno (Kyushu Institute of Technology)

SPECIAL SESSION CO-CHARIS Luciano Buono (University of Ontario Institute of Technology) Hiroyuki Torikai (Kyoto Sangyo University)

SPECIAL SESSION SECRETARY Munehisa Sekikawa (Utsunomiya University)

FINANCE CHAIR Hidehiro Nakano (Tokyo City University)

FINANCE SECRETARY Nobuyoshi Komuro (Chiba University)

PUBLICITY CHAIR Takashi Matsubara (Kobe University)

PUBLICATION CO-CHAIRS Maria Leite (University of South Florida) Tadashi Tsubone (Nagaoka University of Technology)

PUBLICATION SECRETARY Wataru Kurebayashi (Aomori University)

GENERAL CO-SECRETARIES Hugo G. Gonzalez-Hernandez (Tecnologico de Monterrey) Masahiro Wada (Konan University) Takeshi Kamio (Hiroshima City University)

8 Technical Program Committee

Technical Program Co-Chairs Visarath In (SPAWAR) Kiyohisa Natsume (Kyushu Institute of Technology)

Technical Program Secretary Katsumi Tateno (Kyushu Institute of Technology)

Members Norikazu Takahashi (Okayama University) Hakaru Tamukoh (Kyushu Institute of Technology) Kazuki Maruta (Chiba University) Yeon Ho Chung (Pukyong National University) Keiichi Horio (Kyushu Institute of Technology) Jun Nishikawa (Hokkaido University) Takayuki Kimura (Nippon Institute of Technology) Yoshiki Sugitani (Ibaraki University) Hiroyuki Kitajima (Kagawa University) Takashi Hisakado (Kyoto University) Kazuki Nakada (Hiroshima City University)

9 Advisory Committee

K. Aihara (University of Tokyo) S. Amari (FRP, RIKEN) G. Chen (City University of Hong Kong) L. O. Chua (U. C. Berkeley) R. Eberhart (IUPUI) T. Endo (Meiji University) L. Fortuna (University of Catania) T. Hikihara (Kyoto University) H. Kawakami (Tokushima University) M. P. Kennedy (University College Cork) R. W. Liu (University of Notre Dame) I. Mezic (UCSB) J. A. Nossek (Tech. University of Munich) Y. Ohta (Kobe University) S. Oishi (Waseda University) M. J. Ogorzalek (Jagiellonian University) K. Okumura (Simon Fraser University) M. Plum (Karlsruhe University) S. M. Rump (Technical University of Humburg) T. Saito (Hosei University) I. W. Sandberg (University of Texas at Austin) G. Setti (University of Ferrara) R. Stoop (ETH / University of Zurich) M. Tanaka (Sophia University) L. Trajkovic (Simon Fraser University) C. K. Tse (Hong Kong Polytech. University) Y. Ueda (Waseda University) A. Ushida (Tokushima Bunri University) J. Vandewalle (KU Leuven) P. Werbos (National Science Foundation, Retired) A. N. Willson, Jr. (UCLA) A. H. Zemanian (State University NY at Stony Brook)

10 IEICE NOLTA Society Steering Committee (2017)

President Tohru Ikeguchi (Tokyo University of Science)

President-Elect Kenya Jin’no (Nippon Institute of Technology)

Director, General Aﬀairs Hiroo Sekiya (Chiba University) Hiroyuki Torikai (Kyoto Sangyo University)

Director, Finance Keiji Konishi (Osaka Prefecture University)

Director, Publicity Hisashi Aomori (Chukyo University)

Editor-in-Chief of NOLTA Takashi Hikihara (Kyoto University)

Technnical Committee Chair of NLP Masaharu Adachi (Tokyo Denki University)

Technnical Committee Chair of CCS Naoki Wakamiya (Osaka University)

Members Hisato Fujisaka (Hiroshima City University) Kazunori Takahashi (Okayama University) Tadashi Tsubone (Nagaoka University of Technology) Masayuki Yamauchi (Hiroshima Institute of Technology) Mikio Hasegawa (Tokyo University of Science) Makoto Naruse (NICT) Jun-nosuke Teramae (Osaka University) Munehisa Sekikawa (Utsunomiya University) Tetsuya Asai (Hokkaido University) Yutaka Jitsumatsu (Kyushu University) Yoshihiko Horio (Tohoku University) Hiroaki Kurokawa (Tokyo University of Technology)

11 Special Session Organizers

A1L-A Theory and Learning Applications of Koopman Operator Formalism

Organizers Yoshihiko Susuki (Osaka Prefecture University) and Igor Mezic (University of California, Santa Barbara)

A1L-B Systems Theory and its Applications

Organizer Toshimitsu Ushio (Osaka University)

A1L-C Complex systems, complex networks and bigdata analyses

Organizers Atsushi Tanaka (Yamagata University) and Michio Yokoyama (Yamagata University)

A1L-D Advanced Theory and Applications Related to Communication Quality

Organizers Kenko Ota (Nippon Institute of Technology) and Kyoko Yamori (Asahi University)

A1L-E Neuromorphic Systems and Electronic Devices 1

A2L-E Neuromorphic Systems and Electronic Devices 2

A3L-E-1 Neuromorphic Systems and Electronic Devices 3

Organizer Mutsumi Kimura (Ryukoku University)

A2L-A Network Function for Physically and Logically Coupled System

Organizers Takashi Hikihara (Kyoto University) and Vakhtang Putkaradze (University of Alberta)

A2L-D Complex Communication Sciences 1

A3L-D-1 Complex Communication Sciences 2

Organizer Naoki Wakamiya (Osaka University)

A3L-A Radio and Optical Wireless Communications 1

B2L-E Radio and Optical Wireless Communications 2

C0L-E Radio and Optical Wireless Communications 3

Organizers Yeon Ho Chung (Pukyong National University), Kazuki Maruta (Chiba University) and Satoshi Takahashi (Hiroshima City University)

A3L-C Laser Dynamics and Complex Photonics 1

B1L-C Laser Dynamics and Complex Photonics 2

Organizers Kazutaka Kanno (Fukuoka University), Fumiyoshi Kuwashima (Fukui University of Technology) and Atsushi Uchida (Saitama University)

B1L-A-1 Synchronization (SS)

Organizers Tetsuro Endo (Meiji University) and Wataru Kurebayashi (Aomori University)

B1L-B-1 Dynamical Brain and the Information Processing

Organizer Kiyohisa Natsume (Kyushu Institute of Technology)

B1L-D-1 Dynamical Networks and Structure

Organizers Luciano Buono (University of Ontario Institute of Technology) and Antonio Palacios (San Diego State Uni- versity)

B2L-A Nonlinear waves and localizations 1

C0L-A Nonlinear waves and localizations 2

Organizers Yusuke Doi (Osaka University) and Masayuki Kimura (Kyoto University)

12 B2L-B Cellular Dynamical Systems 1

C0L-B Cellular Dynamical Systems 2

Organizer Hiroyuki Torikai (Kyoto Sangyo University) B2L-C Optimization Algorithms with Nonlinear Dynamics 1

C0L-C Optimization Algorithms with Nonlinear Dynamics 2 Organizer Hidehiro Nakano (Tokyo City University)

B2L-D Nonlinear Circuits Distributed and Coupled across Nontrivial Network Topologies 1 C0L-D Nonlinear Circuits Distributed and Coupled across Nontrivial Network Topologies 2

Organizers Yoko Uwate (Tokushima University) and Tadashi Tsubone (Nagaoka University of Technology) C2L-A Switched Dynamical Systems: Modeling, Analysis, and Applications

Organizers Mio Kobayashi (National Institute of Technology, Anan College) and Takuji Kousaka (Oita University) C2L-B Complex Networks and Systems

Organizer Mikhail Prokhorov (Institute of Radio Engineering and Electronics of Russian Academy of Sciences) C2L-E-1 Recent Progress in Optimization Algorithms using Nonlinear Techniques

Organizers Takayuki Kimura (Nippon Institute of Technology) and Takafumi Matsuura (Nippon Institute of Technology)

13 Symposium Information

Symposium Venue Cancun International Convention Center Boulevard Kukulcan´ KM. 9 1er Piso, Zona Hotelera, 77500 Cancun,´ Q. Roo, Mexico

[Opening Ceremony & Plenary Talks] Room 2 & A in COZUMEL on Floor 2

[Parallel Sessions] Five rooms in COZUMEL on Floor 2

[Poster Session, presented by Award candidates] Room A in COZUMEL on Floor 2

(The first floor is the floor immediately above the ground floor.)

Symposium Registration Dec. 4, 17:00 – 19:00 on the Floor 2 Dec. 5, 08:00 – 18:00 on the Floor 2 Dec. 6, 08:00 – 17:00 on the Floor 2 Dec. 7, 08:00 – 15:30 on the Floor 2

Social Events • Dec. 4, 19:00 – 21:00, Welcome reception: TERRACE AKUMAL on Floor 2

• Dec. 6, 19:00 – 21:00, Banquet: GRAN CANCUN on Floor 3

• Dec. 7, 16:00 – 17:30, Closing ceremony and Student paper award ceremony: Room 2&A in COZUMEL on Floor 2

14 Session Room Information All session rooms are in COZUMEL on Floor 2.

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Session room

15 Session at a Glance December 5, 2017 (Tuesday)

Cancun International Convention Center

8:30– Opening ceremony 8:40 Place: Room 2&A

Plenary Talk 1, Prof. Andrea L. Bertozzi (University of California Los Angeles) 8:40– Chair: Antonio Palacios (San Diego State University) 9:40 Place: Room 2&A

9:40– Coﬀee break 10:25 Room 1 Room 2(&A) Room 3 Room 4 Room 5

10:25– A1L-A A1L-B A1L-C A1L-D A1L-E 12:25 Theory and Learning Systems Theory and its Complex systems, Advanced Theory and Neuromorphic Systems Applications of Applications complex networks and Applications Related to and Electronic Koopman Operator Chair: bigdata analyses Communication Devices 1 Formalism Toshimitsu Ushio Chair: Quality Chair: Chair: Page 20 Atsushi Tanaka Chairs: Mutsumi Kimura Yoshihiko Susuki Page 21 Kenko Ota and Kyoko Page 24 Page 19 Yamori Page 23

12:25– Lunch break 13:45

13:45– A2L-A A2L-B A2L-C A2L-D A2L-E 15:25 Network Function for Circuits and Systems / Neural Networks / Complex Neuromorphic Systems Physically and Analog and digital Biological Engineering Communication and Electronic Logically Coupled devices Chairs: Sciences 1 Devices 2 System Chairs: Masaharu Adachi and Chair: Chair: Chairs: Salih Ergun¨ and Yutaka Tohru Ikeguchi Naoki Wakamiya Mutsumi Kimura Takashi Hikihara and Jitsumatsu Page 27 Page 28 Page 29 Vakhtang Putkaradze Page 26 Page 25

15:25– Coﬀee break 15:40

15:40– A3L-A A3L-B A3L-C A3L-D-1 A3L-E-1 18:20 Radio and Optical Complex Networks and Laser Dynamics and Complex Neuromorphic Systems Wireless Systems / Image and Complex Photonics 1 Communication and Electronic Communications 1 Signal Processing Chairs: Sciences 2 Devices 3 Chairs: Chairs: Kazutaka Kanno and Chair: Chair: Yeon Ho Chung and Shigeru Ninagawa and Fumiyoshi Kuwashima Naoki Wakamiya Mutsumi Kimura Kazuki Maruta Tomio Goto Page 34 A3L-D-2 A3L-E-2 Page 30 Page 32 Complex Networks and Machine Learning / Systems / Image and Evolutionary Signal Processing computations Chair: Chairs: Abdelali El Aroudi Basabi Chakraborty and Page 35 Goutam Chakraborty Page 37

16 December 6, 2017 (Wednesday)

Cancun International Convention Center

Plenary Talk 2, Prof. Adilson E. Motter (Northwestern University) 8:30– Chair: Luciano Buono (University of Ontario Institute of Technology) 9:30 Place: Room 2&A

9:30– Coﬀee break 10:15 Room 1 Room 2(&A) Room 3 Room 4 Room 5

10:15– B1L-A-1 B1L-B-1 B1L-C B1L-D-1 B1L-E 12:35 Synchronization (SS) Dynamical Brain and Laser Dynamics and Dynamical Networks Chaos and Bifurcation Chairs: the Information Complex Photonics 2 and Structure Chairs: Wataru Kurebayashi and Processing Chairs: Chairs: Hidetaka Ito and Tetsuro Endo Chair: Kazutaka Kanno and Luciano Buono and Masahiro Wada B1L-A-2 Kiyohisa Natsume Fumiyoshi Kuwashima Antonio Palacios Page 45 Synchronization (RS) B1L-B-2 Page 42 B1L-D-2 Chair: Neurodynamics / Control and robotics Christopher D. Learning and memory Chair: Cruz-Ancona Chair: Yuki Nishimura Page 39 Hideyuki Kato Page 43 Page 40

12:35– Lunch break 13:55

13:55– B2L-A B2L-B B2L-C B2L-D B2L-E 15:35 Nonlinear waves and Cellular Dynamical Optimization Nonlinear Circuits Radio and Optical localizations 1 Systems 1 Algorithms with Distributed and Wireless Chair: Chair: Nonlinear Dynamics 1 Coupled across Communications 2 Masayuki Kimura Hiroyuki Torikai Chairs: Nontrivial Network Chairs: Page 46 Page 47 Hidehiro Nakano and Topologies 1 Yeon Ho Chung and Kenya Jin’no Chairs: Kazuki Maruta Page 48 Yoko Uwate and Tadashi Page 50 Tsubone Page 49

15:35– Coﬀee break 15:50

15:50– C0L-A C0L-B C0L-C C0L-D C0L-E 17:10 Nonlinear waves and Cellular Dynamical Optimization Nonlinear Circuits Radio and Optical localizations 2 Systems 2 Algorithms with Distributed and Wireless Chair: Chair: Nonlinear Dynamics 2 Coupled across Communications 3 Masayuki Kimura Hiroyuki Torikai Chairs: Nontrivial Network Chairs: Page 51 Page 52 Hidehiro Nakano and Topologies 2 Yeon Ho Chung and Kenya Jin’no Chairs: Kazuki Maruta Page 53 Yoko Uwate and Tadashi Page 55 Tsubone Page 54

19:00– Banquet 21:00 Place: GRAN CANCUN on Floor 3

17 December 7, 2017 (Thursday)

Cancun International Convention Center

Plenary Talk 3, Prof. Kurt A. Wiesenfeld (Georgia Institute of Technology) 8:30– Chair: Hisato Fujisaka (Hiroshima City University) 9:30 Place: Room 2&A

10:15– Poster Session, presented by Award candidates 12:15 Place: Room A

12:15– Lunch break 13:35 Room 1 Room 2(&A) Room 3 Room 4 Room 5

13:35– C2L-A C2L-B C2L-C C2L-D C2L-E-1 15:55 Switched Dynamical Complex Networks and Applied Mathematics / Deep Learning / Optics Recent Progress in Systems: Modeling, Systems Self-Validating Chairs: Optimization Analysis, and Chair: Numerics Takashi Matsubara and Algorithms using Applications Mikhail Prokhorov Chairs: Michael J. Wishon Nonlinear Techniques Chairs: Page 57 Steve Huntsman and Page 59 Chair: Mio Kobayashi and Tomoaki Okayama Takayuki Kimura Takuji Kousaka Page 58 C2L-E-2 Page 56 Optimization / Oscillations Chair: Yoshiki Sugitani Page 60

16:00– Closing Ceremony and Student Paper Award Ceremony 17:30 Place: Room 2&A

18 Abstracts

A0L-A Plenary Talk 1 context more general than isochrons and isostables, deriving results on the relationship of the full Koopman Mode De- DATE: 2017/12/5 8:40–9:40 composition with objects computed in DMD, using the fact ROOM: Room 2&A that GLA is known to be an exact algorithm in the infinite Chair: Antonio Palacios (San Diego State University) time limit. We also show that finite-dimensional DMD ap- £ proximations of Koopman eigenfunctions are in the Koop- ¢A0L-A-1 ¡Mathematics of Crime man operator pseudospectrum. Andrea L. Bertozzi (University of California Los Angeles) Keywords: Koopman operator, Isostables, Isochrons, Dy- namic Mode Decomposition In Los Angeles, law enforcement agencies have discovered that partnering with a team of mathematicians and social sci- entists can help them determine where crime is likely to oc- £ cur and so enable them to stop it before it happens. In this ¢A1L-A-2 ¡Approximating the Continuous Spectral Mea- lecture Andrea Bertozzi will tell the story behind the UCLA sure of the Koopman Operator team that developed a ‘predictive policing’ computer pro- Marko Budisic (Clarkson University), Ryan Mohr (Univer- gramme that zeros-in on areas that have the highest proba- sity of California, Santa Barbara) bility of crime. She will also discuss how mathematics play ⇒ Proc. p. 5, [Paper ID: 5158] an increasing role in studying crime, especially gang crime, and how machine learning techniques help to sort through Koopman operator is a linear operator that encodes the evo- large volumes of data including information from police re- lution of measurements along state trajectories of nonlinear ports and body worn video cameras. Models from the UCLA dynamics. When the dynamics are irregular, the Koopman team include self-exciting point processes, nonlinear partial operator has a continuous spectrum, which is poorly approxi- differential equations, graph-based methods, and deep learn- mated by existing method. We demonstrate this gap, and pro- ing methods. pose an alternative approach based in inverse moment problems. Keywords: koopman operator, continuous spectrum, mixing, approximate methods

A1L-A Theory and Learning Applica- £ ¢A1L-A-3 ¡Nonparametric Bayesian Learning of Koop- tions of Koopman Operator Formalism man Spectrums in Nonlinear Dynamical Systems Yoshinobu Kawahara (Osaka University) / / DATE: 2017 12 5 10:25–12:25 ⇒ Proc. p. 6, [Paper ID: 5123] ROOM: Room 1 Chair: Yoshihiko Susuki (Osaka Prefecture University) The analysis of nonlinear dynamical systems is fundamen- £ tal in a variety of scientific and industrial fields. Here, we ¢A1L-A-1 ¡On the Computation of Isostables, Isochrons describe a nonparametric Bayesian approach for extracting and Other Spectral Objects of the Koopman Operator latent structures of nonlinear dynamics via learning eigen- Using the Dynamic Mode Decomposition functions of the Koopman operator. The Koopman operator Igor Mezic (UCSB), Hassan Arbabi (UCSB) is a linear operator on spaces spanned by observation func- ⇒ Proc. pp. 1–4, [Paper ID: 5209] tions of the system, and its spectrums provide rich information about the dynamics. We first derive a criterion for learn- Two types of state-space objects - isostables and isochrons ing observable spaces for estimating the spectrums of the - obtained as level sets of Koopman operator eigenfunctions, Koopman operator from finite samples. Next, we develop a have recently been shown to be of utility in nonlinear con- generative model for estimating eigenfunctions of the Koop- trol theory. Algorithms to compute these are in the class of man operator via nonparametric Bayesian learning of kernel the so-called Dynamic Mode Decomposition (DMD) algo- features, and then provide an inference algorithm based on rithms or Generalized Laplace Analysis (GLA) algorithms. the Markov chain Monte Carlo for posterior inference with It is interesting to explore the relationship between these two, this model. Finally, we show some illustrative examples for which is what we pursue in this paper. We do this in the

19 showing how our model works, and show comparative re- of Technology) sults with synthetic and real-world data. ⇒ Proc. p. 12, [Paper ID: 5164] Keywords: Dynamical Systems, Machine Learning Dynamic mode decomposition (DMD) is a method of modal extraction from time series data, which models the latent nonlinear dynamics underlying the data in terms of the £ dynamical systems theory. Recently, the extended DMD Modeling Nonlinear Dynamic System in ¢A1L-A-4 ¡ (EDMD) [M. Williams et al., 2015], which significantly RKHS through the Koopman Operator widens the applicability of DMD, has been proposed. How- Satomi Sugaya (University of New Mexico), Yoshihiko ever, selecting an optimal setting of EDMD for given data is Susuki (Osaka Prefecture University), Atushi Ishigame (Os- still an open question. In this study, we propose an algorithm aka Prefecture University), Andrea Mammoli (University of to select the optimal hyperparameter of EDMD. The validity New Mexico), Manel Martinez-Ramon (University of New of our method is demonstrated by numerical experiments. Mexico) ⇒ Proc. pp. 7–10, [Paper ID: 5146] Keywords: Time Series Analysis, Mode Decomposition, Oscillators Koopman Operator is a linear but infinite-dimensional operator defined for a nonlinear dynamical system and captures full information of the system. We present a formulation in Reproduced Kernel Hirbert Space (RKHS) for modeling a nonlinear dynamic system in order to develop relevant linear estimators. The KO is represented as a linear estimator A1L-B Systems Theory and its Applica- in RKHS, and its parameters are determined using the well- known Gaussian process models. This leads to structures tions useable in modeling and nowcasting that account for the non- / / linear behavior of the system. DATE: 2017 12 5 10:25–12:25 ROOM: Room 2 Keywords: Koopman operator, Machine Learning, Kernel Chair: Toshimitsu Ushio (Osaka University) Method £ ¢A1L-B-1 ¡Parametric Stability Yuzo Ohta (Kobe University) £ ⇒ Proc. pp. 13–16, [Paper ID: 5126] ¢A1L-A-5 ¡Dynamic Learning of Embeddings for Cogni- tive Classification from High-Dimensional Data The objective of this paper is to consider parametric stability Jr-Shin Li (Washington University in St. Louis), Liang of dynamical systems. Conditions to guarantee that system Wang (Washington University in St. Louis), Wei Zhang preserves a stability region despite the shift of the equilib- (Washington University in St. Louis) rium location caused by changes ⇒ Proc. p. 11, [Paper ID: 5175] Keywords: Parametric Stability, Nonlinear systems, Uncer- Supervised machine learning provides powerful tools for tainty, Stability region data classification and pattern recognition. However, for classification tasks involving time-series data presenting active dynamic features, many of the state-of-the-art classi- £ fiers may not perform well because they overlook the un- ¢A1L-B-2 ¡Sparse Optimization of Physical Distribution derlying dynamic temporal properties of the data. In this Systems Based on Maximum Hands-Off Control work, we develop a dynamic learning framework integrating Masaaki Nagahara (The University of Kitakyushu), Satoru the Koopman operator theory and support vector machines, Takahashi (Fujitsu Laboratories Ltd.), Hiroyuki Higuchi (Fu- which enables the embeddings of high-dimensional data to jitsu Laboratories Ltd.), Tomoyoshi Takebayashi (Fujitsu a low-dimensional space through extracting dynamics of the Laboratories Ltd.) underlying dynamical system. We apply and validate the de- ⇒ Proc. p. 17, [Paper ID: 5196] veloped methodology by showing high accuracy in cognitive In this article, we propose a novel design method for phys- classifications using fMRI visual cognition datasets. ical distribution on a network based on maximum hands-off Keywords: Koopman operator, Machine Learning, Cogni- control. In this formulation, we can take account of the trade- tive Classification off between minimizing the total cost and reducing the CO2 emissions. The design is described as an optimal control for a discrete-time dynamical system with equality/inequality £ constraints. This is equivalent to a convex optimization prob- ¢A1L-A-6 ¡ Optimal Model Selection for Estimating lem, which can be efficiently solved by numerical optimiza- Stochastic Koopman Modes tion softwares. Wataru Kurebayashi (Aomori University), Sho Shirasaka Keywords: Physical distribution, sparse optimization, con- (The University of Tokyo), Hiroya Nakao (Tokyo Institute vex optimization, sparse modeling, optimal control

20 sition of the movement, can be acquired efficiently. Keywords: Reinforcement learning, Optimal control, Vehi- £ cle ¢A1L-B-3 ¡Control of Singleton Attractors in Boolean Networks Based on Model Reduction Koichi Kobayashi (Hokkaido University) £ ⇒ Proc. pp. 18–21, [Paper ID: 5125] ¢A1L-B-6 ¡ Asymptotic Stabilization of Nonholonomic Four-Wheeled Vehicle with Hysteresis Mechanism In this paper, a control method of singleton attractors (fixed points) in Boolean networks (BNs) is proposed based on Wataru Hashimoto (Hokkaido University), Yuh Yamashita (Hokkaido University), Koichi Kobayashi (Hokkaido Uni- model reduction methods. In the model reduction method utilized, singleton attractors in the original BN and those in versity) ⇒ Proc. pp. 30–33, [Paper ID: 5111] the reduced BN are one-to-one correspondence. Hence, the reduced BN can be utilized in the control problem of single- In this paper, we propose a new asymptotically stabilizing ton attractors. First, a BN and its model reduction method are control law for a four-wheeled vehicle with a steering lim- explained. Next, the control problem of singleton attractors itation. We improve a previously proposed control law by is formulated. Finally, this problem is reduced to an integer authors, which uses a locally semiconcave control Lyapunov linear programming problem. function (LS-CLF) and includes a saturation function and a Keywords: Boolean network, Singleton attractors, Model signum function. The signum function makes the vehicle ve- reduction, Integer linear programming locity nonzero except at the origin so that the angular velocity can be manipulated within the input constraint. However, the signum function may cause a chattering phenomenon at £ some state far from the origin. Thus, we integrate a hystere- ¢A1L-B-4 ¡Obstacle Avoidance of 4-wheeled Vehicle Us- sis mechanism on the vehicle velocity with the control law. ing Receding Horizon Control with iLQG Method Con- The mechanism makes a sign of the vehicle velocity main- sidering Computational Delay tain if the input value decreases the LS-CLF. We confirm the Yun Qian (Osaka University), Toshimitsu Ushio (Osaka effectiveness of the mechanism via an experiment. University) Keywords: Four-wheeled vehicle, Hysteresis mechanism, ⇒ Proc. pp. 22–25, [Paper ID: 5116] Control Lyapunov function We consider an obstacle avoidance problem of 4-wheeled vehicle. We represent the obstacle by a repulsive potential function and introduce a control cost function evaluating the state and the input. Then, we formulate the problem as a receding horizon control problem where the sum of both the repulsive function and the control cost function over the given A1L-C Complex systems, complex net- time interval is optimized on-line. We also take into consid- works and bigdata analyses eration a delay for computation of the control input and use an iLQG based method. By computer simulation, it is shown DATE: 2017/12/5 10:25–12:25 that the vehicle heading towards the target position along an ROOM: Room 3 acceptable path with avoiding the obstacle. Chair: Atsushi Tanaka (Yamagata University) Keywords: Optimal control, Obstacle avoidance, Vehicle £ ¢A1L-C-1 ¡Meta-Sanctions Game on Complex Networks Fujio Toriumi (The University of Tokyo), Hitoshi Ya- £ mamoto (Rissho University), Isam Okada (Soka University) ⇒ ¢A1L-B-5 ¡Control of Nonholonomic Vehicle System Us- Proc. pp. 34–37, [Paper ID: 5105] ing Hierarchical Deep Reinforcement Learning Although incentive systems are effective for resolving Naoyuki Masuda (Osaka University), Toshimitsu Ushio (Os- social dilemmas, most studies consider interactions with no aka University) structures. This unnatural assumption is worth to loosen for ⇒ Proc. pp. 26–29, [Paper ID: 5109] dealing with real situations. Groupware, for example, is an In this paper, we apply an approach integrating two rein- effective form of media for knowledge sharing and active forcement algorithms to a parking problem of 4-wheeled ve- open communication. How should groupware in which hicle and obtain a controller that generates an optimal trajec- vast amounts of beneficial content are provided and active tory. One enables exploring more efficient by hierarchizing discussion is designed? The behavior of information in such a learning agent and the other enables learning from a un- a medium resembles social dilemma games because users shaped reward. By simulation, we show that by hierarchizing voluntarily post beneficial information that creates media the policy of the agent, a parking operation including cutting values. Here, we show the evolution of cooperation in social of the wheel, which requires a long exploration before acqui- dilemma games with incentive systems on networks. Our results reveal that spatial structures tend to prevent from

21 promoting cooperative regimes and that a scale-free network £ can promote the cooperation while even a complex network ¢A1L-C-4 ¡A Fast Test Method for Noise Robustness of cannot in specific parameters. Deep Neural Networks Keywords: Public Goods Game, Meta-Sanctions Game, Muneki Yasuda (Yamagata University), Hironori Sakata Complex Networks, Agent-based Simulation (University of Tsukuba), Seungil Cho (Yamagata Univer- sity), Tomochika Harada (Yamagata University), Atushi Tanaka (Yamagata University), Michio Yokoyama (Yama- £ gata University) ⇒ ¢A1L-C-2 ¡Evaluation of Sleep Quality Based on En- Proc. pp. 46–49, [Paper ID: 5042] vironment and Vital Sensor Signals Using Big Data In this paper, we propose a fast test method for noise robust- Analysis and Deep Learning ness of pattern recognition systems based on deep neural Minami Tsuchiya (Yamagata University), Atsushi Tanaka networks. The proposed method enable us to compare the (Yamagata University), Muneki Yasuda (Yamagata Univer- noise robustnesses of different models and can be applicable sity), Tomochika Harada (Yamagata University), Michio to any type of deep neural networks. We demonstrate the Yokoyama (Yamagata University) validity of our method in the numerical experiments for ⇒ Proc. pp. 38–41, [Paper ID: 5145] MNIST data set and our sleep data set. Big data analysis and deep learning are used to investigate Keywords: pattern recognition, deep learning, noise robust- factors which influence the subjective satisfaction of sleep. ness Environmental and vital signs data are obtained throughout the experiment by a sensing bed system. Relationships between over 300,000 measured data points are visualized £ and analyzed. Deep learning indicates that temperature ¢A1L-C-5 ¡ Multiple Sensor Data Acquisition System difference between the inside and the outside of the bed con- using Commonly Available Sensor Devices for Sleep and tributes to subjective satisfaction of sleep during the warm Car Conditions and cold period. Furthermore it is shown that respiratory Tomochika Harada (Yamagata University), Michio frequency has an influence on sleep satisfaction through Yokoyama (Yamagata University), Seungil Cho (Yamagata deep learning analysis. University), Atsushi Tanaka (Yamagata University), Muneki Keywords: big data analysis, visualization, deep learning, Yasuda (Yamagata University) study of sleep ⇒ Proc. pp. 50–53, [Paper ID: 5152] In this paper, we design and fabricate multiple sensor data acquisition system using commonly available sensor £ devices. Nowadays, various data acquisition systems are A1L-C-3 Inhibition-Mediated Organization of Cortical ¢ ¡ available, such as activity meter, sleeping sensor system, Circuit Through the Spike-Timing-Dependent Plasticity navigation, and etc. However, most of them are often only Taishi Matsumura (Department of Bio-Systems Engineer- available for specific sensors or systems. And they are often ing, Graduate School of Engineering, Yamagata University), closed systems. For example, a commonly used activity Tetsuya Yuasa (Department of Bio-Systems Engineering, meter cannot collect data independently unless special Graduate School of Engineering, Yamagata), Siu Kang software is used. So, in this paper, we will design a simple (Department of Bio-Systems Engineering, Graduate School data acquisition system that can be built with commercially of Engineering, Yamagata) available microcomputers and sensors, and can control ⇒ Proc. pp. 42–45, [Paper ID: 5084] multiple sensors using simple Python software, which is Cortical network shows various activity under the inhibition used for world wide web programming software. Then, we provided by interneurons. Recent electrophysiological verify the proposed system through sleep data acquisition studies revealed that the interneurons played active role in and car environment data acquisition. cortical computation such as ocular dominance activity in Keywords: IoT system, sensor system, data acquisition primary visual cortex. However, it is still unclear how the inhibitory network behaves on synaptic plasticity in local circuit level. Here, we computationally examined behavior £ and organization of the network consisted of excitatory and ¢A1L-C-6 ¡Analysis of Social Networks and its Evalua- inhibitory neuronal groups. As a result, we demonstrate the tion Using Big Data Analyzing Technique functional role of inhibitory circuit as a regulator in cortical Atsushi Tanaka (Yamagata University), Seungil Cho network organization through the synaptic plasticity. (Yamagata University), Muneki Yasuda (Yamagata Univer- Keywords: synaptic plasticity, interaction between excita- sity), Tomochika Harada (Yamagata University), Michio tion and inhibition, neural network simulation, learning and Yokoyama (Yamagata University) memory ⇒ Proc. pp. 54–57, [Paper ID: 5050] In order to analyze social networks, an improved method for

22 Clique Percolation Method(CPM) is proposed. Using this sation techniques. Three time-delay models in the Smith method, which is called pseudo ACPM, network analysis predictor, i.e., minimum, maximum, and average time-delay of friendship networks on SNS sites for college students models, are proposed for the redundant feedback paths with is carried out. As the number of lack of nodes to fuse two different transmission delays. The proposed methods using cliques decreases, it is confirmed that small communities the three models are compared by simulations. inside large communities can be detected. Our results are Keywords: Control Systems, Networks also evaluated using the method for big data analysis. Keywords: Complex Network, Community Analysis, Big Data Analysis £ ¢A1L-D-3 ¡A Tamper Detection Method Using Redun- dant Network Paths with Different Delays for Networked Control Systems Kenta Yamada (Keio University), Jin Hoshino (Keio Univer- sity), Ryogo Kubo (Keio University) A1L-D Advanced Theory and Applica- ⇒ Proc. pp. 66–69, [Paper ID: 5035] tions Related to Communication Qual- There is a growing need for safe and secure networked motion control systems. This paper proposes a tamper detection ity method on a forward network path from a controller to an actuator. The proposed method utilizes a selector on the ac- / / DATE: 2017 12 5 10:25–12:25 tuator side and redundant forward paths on which the same ROOM: Room 4 control signals are transmitted. In the selector, a correct sig- Chairs: Kenko Ota (Nippon Institute of Technology) and nal is selected out of the received signals with or without Kyoko Yamori (Asahi University) tampering in consideration of different transmission delays £ on the redundant paths. The selector waits for receiving ¢A1L-D-1 ¡Analysis of Controller Mismatch in AQM a control signal with the maximum transmission delay and with Butterfly-Shaped Perfect Delay Compensator compares the received signals transmitted at the same time. Ryosuke Hotchi (Keio University), Ryogo Kubo (Keio Uni- Experimental results using three forward paths show that the versity) proposed method can achieve stable operation of the system ⇒ Proc. pp. 58–61, [Paper ID: 5079] even if one of the paths is tampered. We have previously proposed a remote congestion con- Keywords: Control Systems, Networks, Cybersecurity troller with the butterfly-shaped perfect delay compensator (PDC) for time-delay compensation in active queue management (AQM) supporting transmission control protocol (TCP) £ flows. This paper analyzes the effect of the mismatch be- ¢A1L-D-4 ¡Reflective Boolean Network Tomography for tween the controller model and the original controller in the Node Failure Detection proposed remote AQM control scheme. Simulations show Naoya Kiyofuji (Osaka University), Takahiro Matsuda (Os- that the proposed control scheme keeps its stability even aka University), Shinsuke Hara (Osaka City University), when the parameter mismatch occurs. Kenichi Takizawa (National Institute of Information and Communications Technology), Fumie Ono (National Insti- Keywords: Networks, Control tute of Information and Communications Technology), Ryu Miura (National Institute of Information and Communica- tions Technology) £ ⇒ Proc. pp. 70–73, [Paper ID: 5045] ¢A1L-D-2 ¡Networked Motion Control with Tamper De- tection Observer and Smith Predictor Boolean network tomography is a network monitoring Jin Hoshino (Keio University), Takahiro Funakoshi (Keio scheme to identify failure nodes from end-to-end measure- University), Kenta Yamada (Keio University), Ryogo Kubo ments. We propose a Reflective Boolean Network Tomog- (Keio University) raphy scheme for wireless mesh networks. While multiple ⇒ Proc. pp. 62–65, [Paper ID: 5047] measurement nodes are deployed to transfer probe packets in existing Boolean network tomography schemes, only one The tamper detection observer (TDO) has been proposed to measurement node is used in the proposed scheme. The mea- achieve safe and secure operation of networked motion con- surement node establishes round-trip paths to transfer probe trol systems with redundant feedback paths. However, the packets sequentially according to candidate failure nodes. conventional TDO does not consider the transmission delays With simulation experiments, we evaluate the performance of communication networks, which degrade the performance of the proposed scheme. and stability of the system. This paper proposes time-delay compensation methods of a networked motion control sys- Keywords: Network Tomography, Node Failure Detection tem using the TDO. The proposed system includes the Smith predictor, which is one of the popular time-delay compen-

23 £ A1L-E Neuromorphic Systems and ¢A1L-D-5 ¡ Proposal for Packet Assignment Scheme Electronic Devices 1 for Video Transmission Using Multicast Distribution in WLAN Systems DATE: 2017/12/5 10:25–12:25 Isamu Shitara (Nippon Institute of Technology), Yoshiaki ROOM: Room 5 Morino (Nippon Institute of Technology), Takefumi Hiraguri Chair: Mutsumi Kimura (Ryukoku University) (Nippon Institute of Technology), Kentaro Nishimori (Ni- igata University) £ ⇒ Proc. pp. 74–77, [Paper ID: 5162] ¢A1L-E-1 ¡ Sign-Invariant Unsupervised Learning Facilitates Weighted-Sum Computation in Analog In this paper, we have proposed a packet assignment scheme Neural-Network Devices in a frame structure, which is suitable for video transmission Itaru Hida (Hokkaido University), Kodai Ueyoshi using multicast distribution in wireless LAN systems. Mul- (Hokkaido University), Shinya Takamaeda-Yamazaki ticast distribution transmits data packets to nearby receiv- (Hokkaido University), Masayuki Ikebe (Hokkaido Univer- ing terminals using single transmission rate. The same data sity), Masato Motomura (Hokkaido University), Tetsuya packet is simultaneously distributed to multiple terminals. Asai (Hokkaido University) However, there is a problem when multicast distribution is ⇒ Proc. p. 82, [Paper ID: 5005] performed using a single transmission rate. The efficiency of the entire radio network decreases if packets fail to arrive at Research on neural networks is rapidly growing, in spite a receiving terminal far from the access point or if distribu- of two stagnation periods in the last half century. While tion to a faraway terminal occurs at a low transmission rate. theories and methods on neural networks are often invented The packet assignment scheme proposed in this paper is real- by computer science or enormous simulation, introducing ized by assigning multiple transmission rates to packets that the discovery of neuroscience and neurophysiology into are encoded by scalable video coding in a frame structure to neural networks is also an attractive approach. We propose resolve this issue. we confirmed the performance of the pro- a novel method that sets weights between neuron units as posed scheme by using an evaluation scheme, which evalu- sign-invariant weights based on the functional classification ates metrics consisting of propagation parameter and quality of synapses, or distinction between the excitatory synapse of experience. and the inhibitory synapse. Since weights are replaced by resistors in analog neural circuits, the proposed method of Keywords: Multicast, WLAN, QoE fixing the sign of the weight will bring effective innovation to the implementation of neural devices. The purpose of this study is to elucidate the effect of the proposed method £ on network performance. Unsupervised pre-training on A1L-D-6 A Study on the Relationship Between QoE of ¢ ¡ the discrimination model was first performed to which Audiovisual Content and Heart-Rate Variability the proposed method was applied, and then the model Kenko Ota (Nippon Institute of Technology) was fine-tuned. The obtained learned network showed ⇒ Proc. pp. 78–81, [Paper ID: 5166] high accuracy comparable to non-sign-invariant ordinary This research investigated the relationship between QoE networks for category classification. (Quality of Experience) of audiovisual content and heart-rate Keywords: neural networks, unsupervised learning, analog variability using wearable heart-rate sensor. As the anal- circuits, deep belief network ysis method of heart-rate variability, the LF ratio obtained by frequency analysis of RRI (R-R Interval), the distance from the origin to the center of the ellipse by which the £ Lorenz plot is approximated and the area of the ellipse were ¢A1L-E-2 ¡Brain-Like Synapse Oxide Thin-Film Tran- used. First, heart-rate variability was measured for audio- sistors Gated by Solid Electrolytic Gate Insulators visual content that was not affected by quality degradation Yeomyeong Kim (KyungHee Univ.), Giheon Kim (Elec- due to video stop. As a result, the stress index calculated tronics&Telecommunication Research Institute), Sungmin from the heart-rate variability when viewing the audiovisual Yoon (KyungHee Univ.) content that subject would not want to see indicated that the ⇒ Proc. pp. 83–86, [Paper ID: 5018] subject tended to feel stress. Next, heart-rate variability was measured for audiovisual content that was affected by quality Synaptic oxide thin-film transistors (TFTs) using two degradation due to video stop. There was a partial relation- types of solid electrolytic gate insulators were fabricated and ship between QoE of audiovisual content with quality dete- characterized for realizing the brain-like synaptic operations. rioration and heart-rate variability. The channel conductance of synaptic TFTs was gradually modulated upon applied input pulses with variations in Keywords: Audiovisual content, QoE, Heart Rate Variabil- pulse width, pulse amplitude and number of pulses by ity, Frequency Analysis, Lorenz Plot the movement of ions in electrolytic gate insulators. The synaptic operations including short-term memory and decay behavior were well emulated for both synaptic TFTs. The synapse TFTs employing an oxide channel and electrolytic

24 gate insulator could be expected to be promising synapse of Ti/a-IGZO/Ti and found that the conductance decreases devices for large-area electronics. as the time goes by, which is available to modified Hebbian Keywords: Electrolytic gate insulator, synaptic TFT, rule, a learning rule we proposed for our network. We mod- Li:PPC, PVP-SBA, STM, LTM eled the conductance degradation of the a-IGZO thin film, developed a simulator, and obtained the learning results. We would like to develop brain-type integrated system with £ three-dimensional structure utilizing the thin-film devices in ¢A1L-E-3 ¡FPGA-Based Implementation of Digital Spike future. Maps Keywords: Brain-like Integrated System, Thin-Film De- Tomoki Hamaguchi (HOSEI University), Toshimichi Saito vice, Neural Network (HOSEI University) ⇒ Proc. pp. 87–90, [Paper ID: 5004] £ This paper studies realization of desired digital spike-trains ¢A1L-E-6 ¡Polychronization in an Asynchronous Cellu- based on a simple evolutionary algorithm. First, the dy- lar Automaton Model of Spiking Neural Network namics of spike-trains is visualized by a digital spike map. Taiki Naka (Kyoto Sangyo University), Hiroyuki Torikai The map is defined on a set of points and is represented (Kyoto Sangyo University) by a characteristic vector of integers. Second, in order to ⇒ Proc. p. 99, [Paper ID: 5173] realize desired spike-trains, we present a simple evolutionary algorithm that aims at optimization of the characteristic Polychronizations in an asynchronous cellular automaton vector for a cost function. Third, in order to implement the model of spiking neural network is analyzed and their digital spike map, we introduce a digital spiking neuron applications are discussed. consisting of two shift registers and a wiring between them. Keywords: Polychronization Keywords: FPGA

£ ¢A1L-E-4 ¡Development and Evaluation of Neural Net- works Using Oxide Semiconductor Synapses for Letter A2L-A Network Function for Physi- Reproduction cally and Logically Coupled System Hiroki Yamane (Nara Institute of Science and Technol- ogy), Tomoya Kameda (Nara Institute of Science and DATE: 2017/12/5 13:45–15:25 Technology), Mutsumi Kimura (Nara Institute of Science ROOM: Room 1 and Technology), Yasuhiko Nakashima (Nara Institute of Chairs: Takashi Hikihara (Kyoto University) and Vakhtang Science and Technology) Putkaradze (University of Alberta) ⇒ Proc. pp. 91–94, [Paper ID: 5007] £ Development and Evaluation of Neural Networks using ¢A2L-A-1 ¡A Model of Packetized Power Transfer Based Oxide Semiconductor Synapses for Letter Reproduction on Density Flow Takashi Hikihara (Kyoto University) Keywords: Neural Network, Oxide Semiconductor ⇒ Proc. pp. 100–103, [Paper ID: 5099] Synapse, Letter Reproduction Recently a new power packet dispatching system is proposed and developed as bottom-up technology at physical layer and £ top-down strategy in algorithm. The system development ¢A1L-E-5 ¡Brain-Like Integrated System Using Thin- may change power distribution completely different from the Film Devices conventional low power network. This paper shows a model Mutsumi Kimura (Nara Institute of Science and Tech- of the packetized power flow and the general formulation of nology), Tomoya Kameda (Nara Institute of Science and power transfer from view point of energy and entropy Technology), Yasuhiko Nakashima (Nara Institute of Sci- Keywords: power system, packetization, density flow, net- ence and Technology) work ⇒ Proc. pp. 95–98, [Paper ID: 5006]

We are investigating “brain-type integrated system”, namely, neural network built only by hardware, which can £ be compact, low power, robust, and integrated on everything. ¢A2L-A-2 ¡ Signal Regularization Using Dynamics of Until now, we have succeeded in hardware simpliﬁcation and Tree-Like Structures are trying to utilize thin-ﬁlm devices for the neuromorphic Rochelle Nieuwenhuis (University of Alberta), Madoka application because they can be fabricated using low cost Kubota (Fuji Electric), Morris Flynn (University of Al- fabrication. In this study, we made a sandwiched structure berta), Masayuki Kimura (Kyoto University), Takashi Hik- ihara (Kyoto University), Vakhtang Putkaradze (University

25 of Alberta) ⇒ Proc. pp. 116–119, [Paper ID: 5129] ⇒ Proc. pp. 104–107, [Paper ID: 5176] Bacterial species in the gut are often exposed to external We explore the dynamics of a fully nonlinear, tree-structured perturbations such as antibiotics or dietary change. Although resonator and its response to a broadband forcing of the microbiome data representing a snapshot of bacterial species branches. It is shown that the dynamics leads to the regular- composition become more and more accessible, applications ization, or narrowing of the spectrum, of vibration towards of informatic and statistical methods to identify responding the stem. Both two- and three-dimensional motions are ex- factors to external perturbations have been less utilized. In amined, and compared to laboratory experiments. We show this paper, we set up an informatic and statistical pipeline to that the branched structures can increase the efficiency of en- detect bacterial species and metabolic pathways as respond- ergy harvesting from broadband sources. ing factors to external perturbations, and demonstrate its po- Keywords: Networks, dynamics, energy harvesting tential usefulness for broad use in analyzing microbiome data. Keywords: Data Mining, Microorganisms £ ¢A2L-A-3 ¡A bio-Inspired Pattern Dynamics of Power Flow in Consensus Networks Hiroyasu Ando (Univ. of Tsukuba), Mikio Hasegawa (Tokyo Univ. of Science), Takashi Hikihara (Kyoto Univ.) ⇒ Proc. pp. 108–111, [Paper ID: 5150] A2L-B Circuits and Systems / Analog Management of distributed power storages in networked and digital devices systems could be useful technology for robust and flexible power supply to distributed loads. Such a mechanism are in- DATE: 2017/12/5 13:45–15:25 herent in biological systems. Specifically, functions such as ROOM: Room 2 adaptation of power supply patterns according to frequency Chairs: Salih Ergun¨ (TUBITAK - Informatics and Infor- of use and exchanging and concentrating power among net- mation Security Research Center) and Yutaka Jitsumatsu work nodes are applicable to engineering systems. In this (Kyushu University) study, we consider a model of power flow in network sys- £ tems by using consensus dynamics which is compatible with ¢A2L-B-1 ¡IC Prototyping of a Switched-Current a/D charge dynamics in electronic circuits. We discuss how to Converter Circuit Based on the Golden Ratio Encoder implement the adaptation function and power exchange in Yoshihiko Horio (Tohoku University), Takayoshi Fujino the power packet dispatching system. (LAPIS Semiconductor Co., Ltd.) Keywords: consensus dynamics, networks ⇒ Proc. pp. 120–123, [Paper ID: 5093] A golden ratio analog to digital (A/D) converter (golden £ ratio encoder; GRE) was proposed as a special case of a A2L-A-4 Coupled Piezoelectric Actuators for the Tac- bate-encoder, which encodes an analog signal to a digital ¢ ¡ = tile Display bit-sequence with a real number radix of beta phi (golden Suketu Naik (Weber State University), Dhanya Nair (Weber ratio). The beta-encoder family was mathematically proven State University) to be robust against variations in circuit and environmental ⇒ Proc. pp. 112–115, [Paper ID: 5049] parameters, and noise, so that it is suitable for an integration with the latest ultra-small semiconductor process. This paper In this paper, we present an initial study towards using cou- presents a proof-of-concept IC prototyping of the switched- pled piezoelectric actuators in a tactile display. The focus is current GRE A/D converter circuit using a 180 nm CMOS on understanding the behavior of a single actuator and its semiconductor process. Simulation results for the prototype coupled behavior in a grid of actuators. We describe the circuit extracted from the layout are shown. model of the single actuator using FEA and numerical sim- Keywords: AD Converter, Switched-Current, Golden Ratio ulations. Next, we apply the model parameters to construct Encoder, Beta Encoder, Real-Number Expansion a small grid of actuators to explore the possibility of pattern formation for the haptic feedback. Keywords: Piezoelectric, Actuators, Tactile Display, Haptic £ Feedback, Soft Spring, Spring Softening, Pattern Formation ¢A2L-B-2 ¡Analysis and Simulation of a Chaos-Based Random Number Generator for Applications in Security Salih Ergun¨ (TUBITAK - Informatics and Information Se- £ curity Research Center) ¢A2L-A-5 ¡Detection of Responding Factors to External ⇒ Proc. pp. 124–127, [Paper ID: 5133] Perturbation in a Microbial Community Shinji Nakaoka (JST PREST) This paper presents analysis and simulation of a chaos-based random number generator (RNG) for applications in secu-

26 rity. An attack system is proposed to discover the security contents of memories. FPGA implementation results show weaknesses of the chaos-based RNG. Convergence of the that the proposed architecture achieves up to 25 times higher attack system is proved using master-slave synchronization throughput than a software implementation. scheme. Future evaluation of the RNG is derived in which Keywords: Programmable architecture, system and logic the only available information is the structure of the RNG design, machine learning, decision diagrams, network secu- and a scalar time series observed from the chaotic oscillator. rity Simulation and numerical results confirming the feasibility of the attack system are given. It has been verified that the deterministic chaos itself can not be represented as a source £ of random generators. ¢A2L-B-5 ¡Mean Square Quantization Error of Golden Keywords: Security analysis, random number generator, Ratio Encoders truly random, continuous-time chaos, synchronization of Koji Itaya (Kyushu University), Yutaka Jitsumatsu (Kyushu chaotic systems University) ⇒ Proc. pp. 136–139, [Paper ID: 5055] β £ A encoder is an analog to digital converter (ADC) that is based on β transformation. A β encoder is robust to fluctua- ¢A2L-B-3 ¡An Improved Formulation of Feature Values in Passive Reflectionless Transmission-Line Model Based tion of a threshold value of a quantizer. This fact is a signif- on the Cochlea icant advantage over a ADC based on the binary expansion. β Takemori Orima (Tohoku University), Yoshihiko Horio (To- Unfortunately, encoder is not robust to the mismatch of β ∈ , ff β hoku University) the value of (0 1). Therefore the e ective value must ⇒ Proc. pp. 128–131, [Paper ID: 5151] be accurately estimated to reconstruct the input analog value from its β expansion. Golden ratio encoder (GRE) is another A passive reflectionless transmission-line model well re- type of ADC that is basically based on β encoder. The GRE produces the physiological characteristics of the cochlea by is promising because it does not need an estimation of β. In adjusting the parameter values of that model. In the con- this paper, the performance evaluation of GREs is presented. ventional method, it was possible to reproduce only the We analyze the mean square quantization error of GREs. characteristics of the cochlea at the local position in the Keywords: Beta Encoder, Analog to Digital Converter whole cochlea with the passive reflectionless transmission- line model, because the characteristics of the overall passive reflectionless transmission-line model could not be formulated. In this paper, we formulate the characteristics of the overall passive reflectionless transmission-line model and reproduce the characteristics of the whole cochlea in that A2L-C Neural Networks / Biological model by the optimization technique. Engineering Keywords: cochlea, passive reflectionless transmission-line model, optimization technique, peak frequency. DATE: 2017/12/5 13:45–15:25 ROOM: Room 3 Chairs: Masaharu Adachi (Tokyo Denki University) and £ Tohru Ikeguchi (Tokyo University of Science) ¢A2L-B-4 ¡A Programmable Architecture Based on Vec- £ torized EVBDDs for Network Intrusion Detection Using A2L-C-1 Winner-Take-All Neural Network with Random Forests ¢ ¡ Distributed Winner Search Circuit Binbin Xue (Hiroshima City University), Shinobu Na- Kazuki Hanada (Kansai University), Shoya Ueda (Kansai gayama (Hiroshima City University), Masato Inagi (Hi- University), Hidetaka Ito (Kansai University), Hiroomi roshima City University), Shin’Ichi Wakabayashi (Hi- Hikawa (Kansai University) roshima City University) ⇒ Proc. pp. 140–143, [Paper ID: 5160] ⇒ Proc. pp. 132–135, [Paper ID: 5193] This paper proposes a new winner-take-all (WTA) circuit, In this paper, we propose a pro-grammable architecture in which winner search is distributed among neurons in the based on Vectorized Edge-Valued Binary Decision Dia- network. The winner neuron that has the shortest vector grams (VEVBDDs) for Network Intrusion Detection Sys- distance is searched by a simple logic circuit. In the circuit, tems (NIDSs). Our target NIDSs are based on random the shortest vector distance is searched by a bit-by-bit forests, and detect suspicious packets by checking incoming comparison scheme. With this approach, the winner search packets against statistical data of past intrusions using ran- method is embedded in all neurons, and global winner dom forests. In our proposal, a random forest is converted search module that hinders expandability is not needed. into VEVBDDs, and they are implemented by a memory- Winner-take all network (WTANN) with the proposed based architecture. The proposed programmable architec- WTA was designed with VHDL, and its performance was ture can update the statistical data quickly by just rewriting examined by simulations and experiments. It was revealed

27 that the speed of the winner search provided by the proposed avalanche reproducible network model. As a result, we WTA is extremely faster than the other WTA circuits. found that the model network did not generate avalanches, Keywords: Winner take all, neural network, classifier if the strengths of inhibitory connections were too strong or too weak. This result suggests that an appropriate inhibition level exists for generation of avalanches and precise / £ excitation inhibition balance is realized when the neuronal ¢A2L-C-2 ¡ Fast Construction of an Updating System avalanche phenomenon emerges. for Intrusion Detection Using a Multi-Layer Extreme Keywords: neuronal avalanche, STDP, Izhikevich neuron Learning Machine model Daichi Noguchi (Tokyo Denki University), Masaharu Adachi (Tokyo Denki University) ⇒ Proc. pp. 144–147, [Paper ID: 5057] £ ¢A2L-C-5 ¡Optimal Infrared Wave Length for Healing Fast construction for an intrusion detection system (IDS) Pigmentations enables rapid detection of, and response to, intrusions into a Keiko Kohmoto (Kindai University), Fumiyoshi network. Using deep neural networks is expected to give a Kuwashima (Fukui University of Technology) high detection rate for an IDS (S.Poluluri, et al., EFTA2016, ⇒ Proc. pp. 156–158, [Paper ID: 5106] pp.1-8). However, this requires time-consuming iterative computation. To address this, we propose a method for fast Effective Infrared lasers for medical applications especially construction of an IDS using a multi-layer Extreme Learning for removal of hair and some pigmented lesions are inves- Machine based on Auto Encoder. tigated. The lasers with the wavelength of about 700nm Keywords: Cyber Security, Extreme Learning Machine, are used considering the absorption coefficients of water, Intrusion Detection System, Deep Learning oxyhemoglobin, oxyhemoglobin and melanin. We selected about 100mW semiconductor lasers, which are enough output power to examine the laser effect on the melanin. £ In this research, a hair is selected for melanin sample. ¢A2L-C-3 ¡Continuous Learning of the Som with an The purpose of this paper is to consider a dependence of Adaptive Neighborhood Function wavelength on a temperature rise in a melanin. Hikari Yoshimi (Kansai University), Hidetaka Ito (Kansai Keywords: Infrared Laser, Semiconductor Laser Melanin University), Hiroomi Hikawa (Kansai University) ⇒ Proc. pp. 148–151, [Paper ID: 5161]

This paper proposes a new neighborhood function for the self-organizing map (SOM). As the learning of the SOM progresses, the conventional neighborhood function shrinks A2L-D Complex Communication Sci- its magnitude and neighborhood radius, and the learning stops after pre-defined training iterations. On the other hand, ences 1 the proposed neighborhood function uses only the distance between the weight vector of the winner neuron and the DATE: 2017/12/5 13:45–15:25 input vector, then themagnitude and radius are computed ROOM: Room 4 according to this distance. Since the proposed neighborhood Chair: Naoki Wakamiya (Osaka University) function is not a function of the learning iterations, it allows £ the SOM to continue its learning without time constraints. ¢A2L-D-1 ¡An Adaptive Throughput Guarantee Method This feature is especially effective under the changing input Based on SP-Mac for WLAN vector space that arises in, e.g., online learning. Hiroyasu Obata (Hiroshima City University), Chisa Takano Keywords: SOM, neural network, neighborhood function (Hiroshima City University), Yuuki Yamamoto (Hiroshima City University) ⇒ Proc. pp. 159–161, [Paper ID: 5131] £ In CSMA/CA, the frequent occurrence of frame collisions A2L-C-4 Effect of Connectivity Weights of Inhibitory ¢ ¡ reduces the total throughput of all terminals, if the number Neurons in Neuronal Avalanches of wireless terminals connected to the same access point Mayu Aoki (Tokyo University of Science), Hideyuki Kato increases. To solve this problem, we have proposed the (Tokyo University of Technology), Yutaka Shimada (Tokyo SP-MAC which is based on synchronization phenomena of University of Science), Kantaro Fujiwara (Tokyo University coupled oscillators. Moreover, we proposed the through- of Science), Tohru Ikeguchi (Tokyo University of Science) put guarantee control for transmitting terminals based on the ⇒ Proc. pp. 152–155, [Paper ID: 5182] SP-MAC. For our proposed control, the SP-MAC adjusts its In this paper, we investigated the effect of inhibitory synap- parameters according to the total number of terminals and tic connection strengths on neuronal activities in a neuronal the requested throughput, but does not take into consideration the environment where the number of terminals and re-

28 quested throughput dynamically change. In this paper, we Yukio Murata (Tokyo University of Science), Kaori Kuroda propose an adaptive control method based on the SP-MAC (Tokyo University of Science), Mikio Hasegawa (Tokyo Uni- which guarantees the throughput of transmitting terminals in versity of Science) order to extend the application range of the throughput guar- ⇒ Proc. pp. 170–173, [Paper ID: 5155] antee method. ff Keywords: Media access control, Throughput control The e ectiveness of high-speed combinatorial optimiza- method, WLAN, Coupled oscillator tion method using Coherent Ising Machine (CIM) has been shown. Hopfield-Tank Neural Network (HTNN) is applied to the traveling salesman problem as an optimization algorithm using a mutual coupling network like CIM. The method of £ solving the combinatorial optimization problem by running ¢A2L-D-2 ¡Layer Specificity of Acquired Memory Dura- tion in Multilayer LSTM Networks HTNN on CIM has been proposed. In this paper, we aim to solve asymmetric traveling salesman problem (ATSP) by Kazuki Hatanaka (Osaka University), Jun-Nosuke Teramae ffi (Osaka University), Naoki Wakamiya (Osaka University) mapping the problem to the HTNN, which is di cult to ob- ⇒ Proc. pp. 162–165, [Paper ID: 5127] tain optimal solution by heuristic algorithms. Performance evaluations by simulation show that the optimum solution of The LSTM network is a recurrent neural network achiev- ATSP can be obtained by the proposed method. ing impressive performance on machine learning tasks of se- Keywords: Coherent Ising Machine, Asymmetric Traveling quential data recently. The network consists of many LSTM Salesman Problem, Combinatorial Optimization units that are able to store past inputs into their internal memory variables. If the number of the LSTM units of the network is fixed, achieved performance of the network generally £ increases as the numbers of layers of the network increases. ¢A2L-D-5 ¡A Flooding Scheme in Wireless Sensor Net- It remains unclear, however, why deeper LSTM networks works Using a Discrete-Valued Neural Network can achieve higher performance. As a first step to answer the Hidehiro Nakano (Tokyo City University), Arata Miyauchi question, here, we analyze layer-wise difference of temporal (Tokyo City University) dynamics of the memory variable of each unit. We found that ⇒ Proc. pp. 174–177, [Paper ID: 5066] units in a deeper layer averagely keep longer memory duration than these in a shallower layer. We also found that mem- In wireless sensor networks, flooding is used in diffusing ad- ory duration is broadly distributed among units in a deeper vertising messages, control messages, and so on. If forward- layer than a shallower layer. These results mean that units in ing nodes which perform the flooding are properly selected different layers share different roles of memorization. from all the wireless sensor nodes, the messages can be ef- ff Keywords: Recurrent neural network, memory, machine ficiently di used. Also, if plural forwarding node sets are learning, artificial intelligence obtained and these sets are switched periodically, the load balancing of each wireless sensor node can be realized. This paper proposes a method using a discrete-valued neural network for solving this problem. Through numerical simula- £ tions, we confirm the effectiveness of the proposed method. ¢A2L-D-3 ¡Predictability of Financial Market Indexes by Deep Neural Network Keywords: Optimization Algorithms, Wireless Networks Tomoya Onizawa (Ibaraki University), Takehiro Suzuki (Ibaraki University), Tomoya Suzuki (Ibaraki University) ⇒ Proc. pp. 166–169, [Paper ID: 5014]

The present study investigates the predictability of financial markets such as TOPIX (Tokyo StockPrice Index) by using A2L-E Neuromorphic Systems and the stacked autoencoder for the dimensionality reduction of all the companies based on TOPIX and for the pre-training of Electronic Devices 2 deep neural network to learn complex movements of financial markets. Moreover, if neurons can be independent on DATE: 2017/12/5 13:45–15:25 a shallower layer, it would be better to use the naive Bayes ROOM: Room 5 classifier for the following layers. We perform some simula- Chair: Mutsumi Kimura (Ryukoku University) tions with real stock data to investigate the above possibili- £ ties. ¢A2L-E-1 ¡Implementation of Both Synapse and Neuron Keywords: Deep Neural Network, Naive Bayes on a Field-Induced Insulator-to-2D Metal Transition De- vice with SrTiO3 Channel Pablo Stoliar (AIST & CIC nanoGUNE), Alejandro Schul- £ man (AIST), Ai Kitoh (AIST), Isao Inoue (AIST) ¢A2L-D-4 ¡A Coherent Ising Machine Applied to Asym- ⇒ Proc. pp. 178–181, [Paper ID: 5059] metric Traveling Salesman Problems Surfaces of SrTiO3 (STO) are widely known as a playground

29 of basic physical researches of two-dimensional metallic sys- also show the significance of the framework of complex- tems. By electrostatic carrier-density modulation of the STO valued neural networks. surface, a variety of interesting phenomena such as an in- Keywords: Neuro hardware, neural architecture sulator to 2D metal transition (IMT), superconductivity, and ferromagnetism are triggered. Here we demonstrate a unique challenge; neuromorphic electronic devices are implemented £ on the electrostatic control of the IMT at the STO surface.We ¢A2L-E-4 ¡Towards a Neuromorphic Computing Hard- prove that our STO device is indeed a promising candidate of ware System an artificial neuron (leaky-integrate and fire: LIF) as well Yoshihiko Horio (Tohoku Univirsity) as an artificial synapse (spike-timing-dependent plasticity: ⇒ Proc. pp. 189–192, [Paper ID: 5104] STDP). This work will bridge the gap between the basic research of IMT and its viable applications. A brainmorphic hardware paradigm is proposed as a natural extension of the neuromorphic paradigm. A neuromor- Keywords: SrTiO3, artificial neuron, LIF, artificial synapse, phic computing hardware system based on the brainmorphic STDP, two-dimensional electron gas, insulator-metal transi- paradigm processes information mimicking the anatomical tion and physiological mechanisms of cranial nervous system. In addition, we naturally use physical and dynamical characteristics of the constituent devices especially through ana- £ log circuits. Furthermore, we reflect the latest knowledge A2L-E-2 Nonlinear Dynamics of Memristive Networks ¢ ¡ from brain science, in particular, that for higher-order brain and its Application to Reservoir Computing functions including consciousness into the hardware. We Gouhei Tanaka (The University of Tokyo), Ryosho Nakane also consider and utilize the bodily and environmental con- (The University of Tokyo), Toshiyuki Yamane (IBM Re- straints, and evolutionary gain-of-function for novel hard- search - Tokyo), Seiji Takeda (IBM Research - Tokyo), Daiju ware system. Nakano (IBM Research - Tokyo), Shigeru Nakagawa (IBM Research - Tokyo), Akira Hirose (The University of Tokyo) Keywords: Neuromorphic Computing, Neural Network ⇒ Proc. pp. 182–185, [Paper ID: 5135] Hardware, High-Dimensional Dynamics

Reservoir computing is one of the potent computational frameworks suitable for seuqential data processing. Not only recurrent neural networks but also other physical systems and devices are available to construct a reservoir computing system. In this study, we focus on memristive networks con- A3L-A Radio and Optical Wireless sisting of coupled memristors for achieving physical reservoir computing. First, we present a mathematical model of Communications 1 memristive network circuits with any architecture and inves- DATE: 2017/12/5 15:40–18:20 tigate its nonlinear dynamics. The dynamical response to ROOM: Room 1 input sequential data is also examined. Next, we deal with Chairs: Yeon Ho Chung (Pukyong National University) and the problem of how to design memristive networks for better Kazuki Maruta (Chiba University) computational performance in a reservoir computing framework. Finally, we make a discussion toward device imple- £ mentaion of our system. ¢A3L-A-1 ¡Nonlinearity in RF Front-End As a Bottle- neck in High Speed Mobile Communications Keywords: Reservoir computing, memristive networks Ken-Ya Hashimoto (Chiba University), Tatsuya Omori (Chiba University), Kazuki Maruta (Chiba University), Chang-Jun Ahn (Chiba University) £ ⇒ Proc. pp. 193–196, [Paper ID: 5069] ¢A2L-E-3 ¡Complex-Valued Neural Networks to Real- ize Energy-Eﬃcient Neural Networks Including Reser- This paper reviews impact of nonlinear signal generation in voir Computing the RF frontend to high speed mobile communications such Akira Hirose (The University of Tokyo), Seiji Takeda (IBM as LTE-advanced with up and down link carrier aggregation. Research - Tokyo), Toshiyuki Yamane (IBM Research - First, nonlinearity in RF analog circuits is surveyed, and dis- Tokyo), Daiju Nakano (IBM Research - Tokyo), Shigeru cussions are given on impact of the nonlinearity to high speed Nakagawa (IBM Research - Tokyo), Ryosho Nakane (The communications. Discussions are also extended to its digital University of Tokyo), Gouhei Tanaka (The University of cancellation. Tokyo) Keywords: RF frontend, nonlinearity, carrier aggregation ⇒ Proc. pp. 186–188, [Paper ID: 5052]

This paper describes the background and basic ideas of £ wave-based neural networks including reservoir computing A3L-A-2 Fundamental Analysis of Nonlinear Bypass for realizing energy-eﬃcient neural network hardware. We ¢ ¡ Route Computation for Wired and Wireless Network Co-

30 operation Recovery System causes inter symbol interference (ISI) which worsens syn- Yu Nakayama (University of Tokyo), Kazuki Maruta (Chiba chronization accuracy and leads to a negative impact on the University), Takuya Tsutsumi (neko 9 Laboratories), Kaoru overall system performance. The basic idea of the proposed Sezaki (University of Tokyo) scheme is to utilize correlation block shorter than cyclic pre- ⇒ Proc. pp. 197–200, [Paper ID: 5051] fix, so as to avoid the multipath effect.Computer simulations demonstrate the proposed scheme achieves improved A wired and wireless network cooperation (NeCo) system synchronization performance and reduced computation com- was proposed to quickly recover civilian telecommunication plexity compared with the existing schemes. services in the aftermath of a catastrophic disaster. The NeCo Keywords: system achieves both rapid recovery and high throughput us- OFDM, Preamble-less, Symbol timing synchronization, Multipath fading ing wireless bypass routes backhauled by wired networks. However, the routing method did not consider throughput reduction caused by sharing of wireless resources among dead nodes. This paper evaluates resultant throughout per- £ Compensation of Deteriorated CSI Alloca- formance of NeCo system that employs a nonlinear bypass ¢A3L-A-5 ¡ tion Based on Decision Direct and Turbo Equalization for route computation considering the wireless resource sharing. MUDiv/OFDMA Keywords: Disaster recovery, routing Yuta Ida (Yamaguchi University), Takahiro Matsumoto (Ya- maguchi University), Shinya Matsufuji (Yamaguchi Univer- sity) £ ⇒ Proc. pp. 209–212, [Paper ID: 5115] ¢A3L-A-3 ¡Analysis for Designing Cost-Effective Optical Access Networks Including Nonlinear Optical Character- In a wireless propagation channel, the channel for each user istics is independent. By using this characteristic, orthogonal fre- Takuya Tsutsumi (neko 9 Laboratories), Yu Nakayama (The quency division multiple access (OFDMA) with the mul- University of Tokyo), Kazuki Maruta (Chiba University), tiuser diversity (MUDiv) effect is achieved. However, in the Kazuaki Honda (neko 9 Laboratories) fast fading channel, since channel state information (CSI) is ⇒ Proc. pp. 201–204, [Paper ID: 5149] changed between the head and latter of packets, the system performance is degraded. Moreover, in this case, CSI is also ffi It is important for telecom carriers to improve cost-e ciency changed between the cases with and without the feedback of the optical access networks (OANs) because it occupies delay. To solve these problems, in this paper, we propose the greatest part of network infrastructure cost. To further the compensation of the deteriorated CSI allocation based ffi enhance cost-e ciency, it is useful to improve the accept- on the decision direct and the turbo equalization for MU- able link budget of OANs by using optical amplifiers (OAs), Div/OFDMA systems. which can increase the splitting ratios and extend the trans- Keywords: / mission distance of the system. This paper presents a formu- MUDiv OFDMA, Deteriorated CSI allocation, lation for estimating the total transmission distance of long Decision direct, Turbo equalization reach (LR)-OANs in order to quantitatively evaluate the effect of extending the transmission distance on various com- binations of splitting ratio with considering nonlinear optical £ Delta Sigma Domain LDPC Decoder Based characteristics. ¢A3L-A-6 ¡ on Min-Sum Algorithm Keywords: Optical access network, Optical amplifiers Akiyoshi Yasuda (Hiroshima City University), Hisato Fu- jisaka (Hiroshima City University), Masaru Fukushima (Hi- roshima City University), Takeshi Kamio (Hiroshima City £ University) A3L-A-4 Preamble-Less Synchronization by Short ¢ ¡ ⇒ Proc. pp. 213–216, [Paper ID: 5071] Block Autocorrelation for OFDM Systems Over Multi- path Fading Channels Combination of interleaving and random error correction Misaki Fujishiro (Chiba University), Kazuki Maruta (Chiba code is effective as a measure against burst error when power University), Chang-Jun Ahn (Chiba University) line is used for communication between ECUs in a car. How- ⇒ Proc. pp. 205–208, [Paper ID: 5039] ever, since many ECUs are mounted in a car, miniaturization and cost reduction are required for reliable communication This paper proposes a novel symbol timing synchroniza- circuits. In this study, we construct an LDPC decoder cir- tion scheme for preamble-less OFDM systems.In the next cuit that performs error correction in the delta sigma domain generation wireless communication system we have to deal based on the Min-Sum algorithm and attempts to downsize with signals from huge sensors set up everywhere such as the circuit. wearable devices, cars and production facilities in the fac- Keywords: Delta-sigma modulation, Min-Sum decoding, tory.These applications require low latency for quick response or feedback.Preamble-less packet transmission is LDPC code one of the effective means to reduce overhead and has been widely investigated.However, multipath fading channel

31 £ Keywords: quantum mechanical system, single-electron ¢A3L-A-7 ¡Stabilized Interference Suppression by Ini- tunneling, multi-valued sequence, decoder, frequency shift tial Antenna Selection for CMA Adaptive Array Over keying Rayleigh Fading Channels Kazuki Maruta (Chiba University), Chang-Jun Ahn (Chiba University), Ken-Ya Hashimoto (Chiba University) ⇒ Proc. pp. 217–220, [Paper ID: 5060] This paper proposes an antenna selective constant modulus A3L-B Complex Networks and Systems algorithm (ASCMA) to stabilize CMA’s prominent interfer- / ence suppression performance. CMA is well known blind Image and Signal Processing adaptive array scheme, but it cannot suppress the interference / / when signal-to-interference power ratio (SIR) is smaller than DATE: 2017 12 5 15:40–18:20 0 dB. It faces strong limits on their applicable region over ROOM: Room 2 Rayleigh fading channels where instantaneous channel gain Chairs: Shigeru Ninagawa (Kanazawa Institute of Technol- fluctuates over 10 dB range. Even if the expected desired ogy) and Tomio Goto (Nagoya Institute of Technology) signal strength is larger than interference, CMA may still £ miscapture the interference and incorrectly suppress the de- ¢A3L-B-1 ¡Phase Transition in Adaptive Elementary Cel- sired signal. Our proposal is simplified approach to select the lular Automata antenna element whose reception power is maximal.Certain Shigeru Ninagawa (Kanazawa Institute of Technology), Ra- antenna element can be expected to capture the desired sig- mon Alonso-Sanz (Universidad Politecnica de Madrid) nal precisely under the condition where SIR is statistically ⇒ Proc. pp. 225–228, [Paper ID: 5010] positive, so that the CMA processor can utilize it as an initial We propose adaptive cellular automata that can change the input.This condition will be ensured by increasing antenna rule set of each cell during evolution according to a metarule element number, supported by the trends that base station which refers the weighted mean of its own past states. Espe- antenna elements are going massive.Computer simulations cially we take up the metarule that switches two elementary verifies improved interference suppression performance pro- cellular automaton rule sets, rule 110 and rule 90, and inves- vided by the proposed scheme. tigate its behavior using entropy and power spectrum. The Keywords: Adaptive array, Blind algorithm, Constant mod- patterns change from complex to chaotic through periodic ulus algorithm, Antenna selection, Interference suppression, behavior as the threshold varies from zero to one. 1/f noise Rayleigh fading channel gradually emerges as the threshold is getting close to one and suddenly turns into white noise at the threshold equal to one. Keywords: Cellular automaton, Phase transition £ ¢A3L-A-8 ¡Single-Electron Decoder Circuits for Com- munication Systems Using Photoelectric Effect and Elec- £ tronWave Frequency Discrimination ¢A3L-B-2 ¡ Relations Between Early-Warning Signals Jinya Sato (Hiroshima City University), Shota Hayakawa Based on Dynamical Network Markers and Network (Hiroshima City University), Atsushi Setsuie (Hiroshima Structures City University), Hisato Fujisaka (Hiroshima City Univer- Tadayoshi Matsumori (Toyota Central R&D Labs., Inc.), sity), Takeshi Kamio (Hiroshima City University) Makito Oku (University of Tokyo), Kazuyuki Aihara (Uni- ⇒ Proc. pp. 221–224, [Paper ID: 5080] versity of Tokyo) Applications of quantum mechanical phenomena to front- ⇒ Proc. pp. 229–232, [Paper ID: 5140] end parts in receivers of Tera-hertz (THz) sensing and com- Early-warning signals for critical transitions have been stud- munication systems have been studied for minitualization ied in many types of complex systems. For complex sys- and low-power consumption. THz-detection by photoelec- tems with network structures, an indicator based on the dy- tric effect and frequency discrimination by electron-wave namical network markers (DNM) was proposed. In this pa- coupling and refraction are the examples of the studies. The per to understand the features of the DNM-based indicator studies are the attempts to classify photoelectrons by their with respect to network structures (a small-world network, momentum depending on the frequency of the received THz a scale-free network and a spatial network), we detect the wave. If the time sequence of the classification represents early-warning signals of a mathematical model with the net- transmitted data and a decoder circuit analyzing the sequence work exhibiting a bifurcation using the DNM-based indica- can be developed, communication equipped with error cor- tor. Through the numerical experiments, we clarify that the rection is attained. In this report, such decoder circuits are DNM-based indicator can detect the early-warning signals in designed with single-electron tunneling junctions which are all of the network structures we investigated. suitable to deal with photoelectrons. In addition, circuit simulation presents that the designed decoders function as in- Keywords: Critical transitions, Early-warning signals, tended. Complex network

32 images when the optical axis is unknown. The method uses £ a rectangular object to calibrate images. By using the par- ¢A3L-B-3 ¡A Modiﬁed Algorithm and its Program for allel lines, the orthogonality of corners of the object and the Obtaining Particular Solutions and Expansion Coeﬃ- object’s aspect ratio, we can estimate the camera angle and cients in P/T Petri Nets obtain a corrected image even if the image is cropped. Masahiro Osogami (Department of Management and Infor- Keywords: Image Processing, Calibration, Viewpoint mation Sciences, Fukui University of Technology) ⇒ Proc. pp. 233–236, [Paper ID: 5009]

P/T Petri nets are one kind of basic and useful models for £ A3L-B-6 Super-Resolution Image Reconstruction discrete event and concurrent systems and firing count vec- ¢ ¡ Method Based on Non-Linear Image Enhancement Fil- tor for transitions are very important concepts when consider ters about reachability problem which is the most important behavioral properties of Petri nets in determining its behav- Tomio Goto (Nagoya Institute of Technology), Tsubasa ior. To consider about the reachability problem, from M0 Munezawa (Nagoya Institute of Technology), Satoshi Hirano (Nagoya Institute of Technology) to Md are the fundamental problems of Petri nets. To solve ⇒ such problems, the method using matrix equations and re- Proc. pp. 245–248, [Paper ID: 5170] duction techniques has the advantage better than using the Super-resolution is one of the most important technologies cover ability(reachability) tree or using matrix equations. In for image processing because high resolution displays have this paper, we propose a modified algorithm of the Fourier- been widely used although low resolution moving pictures Motzkin method which is well known as a solution of the have been playing. A lot of super-resolution methods have state equation for the reachability problem, and developing been proposed and there are two kinds of methods; recon- the program to use its algorithm. The solutions which could structed type and leaning type of super-resolution. The main not be found by a conventional algorithm can be obtained by problem for the learning type of super-resolution is long using the modified one. And also not only particular solu- computational time to search its dictionary. In this study, tions and elementary T-invariants are obtained, but also the we propose a novel super-resolution method based on non- ffi expansion coe cients can be obtained by the same program linear image enhancement filters and experimental results just changed the input. show that the performance of super-resolution is improved. Keywords: Petri nets, Particular solutions, Expansion coef- Keywords: Super-resolution, Non-linear Enhancement Fil- ficients, Fourier Motzkin Method, Algorithm ter

£ £ ¢A3L-B-4 ¡Improvement of High-Accuracy CT Image ¢A3L-B-7 ¡The Proposal of an Acceleration for Inside Reconstruction Using Nonlinear Dynamics and Outside Judgment Using CUDA Hiromasa Kohno (Kagawa University), Yuichi Tanji (Ka- Koki Sato (tokyo university of science), Rei Nakagawa gawa University), Ken’ichi Fujimoto (Kagawa University) (tokyo university of science), Satoshi Kodama (tokyo uni- ⇒ Proc. pp. 237–240, [Paper ID: 5054] versity of science) ⇒ CT scanners are used for imaging the inside of human bodies Proc. pp. 249–252, [Paper ID: 5171] to detect foci of disease. Issues on performance of CT scan- The inside and outside judgment for the coordinates of ner are to accelerate reconstruction time and improve qual- a given object is an essential concept in three-dimensional ity of reconstructed image. We developed a method for CT modeling. The winding number algorithm is a high-precision image reconstruction to solve these issues. We discuss resolution; however, it involves complicated calculations. We construction of CT by nonlinear dynamics. Euler and ADI consider that parallel operations using Compute Uniﬁed De- methods are applied as numerical integration and we com- vice Architecture(CUDA) can be used to resolve this prob- pare the results obtained by these method. lem. An experiment was conducted, which showed an in- Keywords: Euler method, ADI method crease in the overall speed. Keywords: three-dimensional modeling, inside and outside judgement, parallel operation £ ¢A3L-B-5 ¡A Diagonal Calibration Method of Images Us- ing a Rectangular Object in the case when the Optical Axis is Unknown Takashi Ozeki (Fukuyama University), Eiji Watanabe (Ko- nan University) ⇒ Proc. pp. 241–244, [Paper ID: 5156]

In this paper, we propose a diagonal calibration method of

33 A3L-C Laser Dynamics and Complex We experimentally investigate reservoir computing based on Photonics 1 a semiconductor laser with optical feedback and injection. Different types of temporal masks are applied to an input signal as a mask, and the performance of reservoir comput- DATE: 2017/12/5 15:40–18:20 ing is evaluated by using a time-series prediction task. We ROOM: Room 3 found that good prediction performance can be achieved by Chairs: Kazutaka Kanno (Fukuoka University) and Fu- using the colored-noise mask signal whose cut-off frequency miyoshi Kuwashima (Fukui University of Technology) is close to the relaxation oscillation frequency of the laser. £ Keywords: reservoir computing, lasers ¢A3L-C-1 ¡Reservoir Computing with Nonlinear Micro- Resonators on a Silicon Photonics Chip Damien Rontani (CentraleSupelec),´ Florian Denis Le Coarer £ (CentraleSupelec),´ Andrew Katumba (U Ghent), Matthias ¢A3L-C-4 ¡Information Processing Based on an External- Freiberger (U Ghent), Joni Dambre (U Ghent), Peter Bients- Cavity Semiconductor Laser with Optical Feedback- man (U Ghent), Marc Sciamanna (CentraleSupelec)´ Phase Modulation ⇒ Proc. pp. 253–255, [Paper ID: 5192] Kazutaka Kanno (Fukuoka Univerxity), Chihiro Sugano (Saitama University), Kousuke Takano (Saitama University), We present a reservoir computer based on a small network Atsushi Uchida (Saitama University), Masatoshi Bunsen made of nonlinear micro-resonators integrated on a Silicon (Fukuoka Univerxity) chip. We provide numerical evidence that this novel pho- ⇒ Proc. pp. 264–267, [Paper ID: 5025] tonic integrated circuit can perform binary-type tasks (e.g.: the XOR task or multi-bit header recognition) at bitrate of 20 Reservoir computing (RC) based on a semiconductor laser Gb/s with a performance level adequate for telecom appli- with time-delayed optical feedback is numerically demon- cations. We analyze the impact of key operational parame- strated in this study. RC is a machine learning paradigm ters (e.g.: optical power injected) and topological properties based on information processing in the human brain. In our of the network on the level of performance of the proposed system, input information is injected into the laser via the architecture. Finally, we will compare the performance be- phase of its optical feedback and any other lasers are not tween this new chip with a previous generation of passive used for information input. We demonstrated a chaotic time- reservoir. series prediction by our RC system and investigated the de- Keywords: Photonics, Information Processing, Integrated pendence of the prediction error on the feedback strength, Photonics Circuits the laser injection current, and a node interval by which a feedback loop is temporally divided for considering virtual nodes. The numerical analysis showed that the prediction £ error reduces as the injection current is increased when the ¢A3L-C-2 ¡Optical Implementation of Reservoir Com- feedback strength and the node interval are adjusted. Be- puting for Fast Integrative Analysis in Sensor Array Pro- cause signal to noise ratio is improved at a large value of the cessing injection current. Tadashi Okumura (Hitachi, Ltd.), Mitsuharu Tai (Hitachi, Keywords: Semionductor Laser, Information Processing, Ltd.), Masahiko Ando (Hitachi, Ltd.) Reservoir Computing, Delayed Dynamical System, Time- ⇒ Proc. pp. 256–259, [Paper ID: 5019] Series Prediction Optical reservoir computing (RC) with delayed feedback has been expected to realize high-speed data processing. In this scheme, identification and quantification task for mixture of £ two gases were tested based on 16 channel gas sensor array ¢A3L-C-5 ¡ Assimilating nonlinear dynamics with data to realize electronic nose with comprehensive sensitiv- FORCE-learning : A perspective from chaotic synchro- ity. Both parallel reservoirs with a single-input and a single nization reservoir with multi-inputs were compared in terms of iden- Hiromichi Suetani (Oita University) ⇒ tification performance and node dynamics. Proc. pp. 268–270, [Paper ID: 5207] Keywords: reservoir computing, sensor We propose an approach for modeling dynamical systems using FORCE-learning, a version of reservoir computing (RC) framework. In this approach, a direct coupling between £ FORCE-learning systems and the target dynamical system ¢A3L-C-3 ¡ Experiment on Temporal Mask Effect in is employed, which enables us to treat the problem of the Laser Dynamical Reservoir Computing system identification with terms of synchronization phenom- Yoma Kuriki (Saitama University), Kosuke Takano (Saitama ena. Several examples including limit cycle oscillators and University), Chihiro Sugano (Saitama University), Atsushi chaotic systems are tested as demonstrations and we inves- Uchida (Saitama University) tigate how our approach is useful for modeling general non- ⇒ Proc. pp. 260–263, [Paper ID: 5022]

34 linear dynamics. unstable state with an oscillatory intensity. It repeats with Keywords: chaos, synchronization, reservoir computing, a period that corresponds to the feedback delay time. Ex- system identiﬁcation perimentally, stable-unstable switching with a periodicity of about 80 ns and a microwave oscillation at 8 GHz is demonstrated. Such a switching dynamics is connected to the other £ well-studied dynamics of a laser diode in an optical feedback ¢A3L-C-6 ¡Control of Wavefront Propagation in Two- system. Dimensional Bistable System Keywords: laser diode, feedback, stable-unstable switching Takashi Isoshima (RIKEN) ⇒ Proc. pp. 271–274, [Paper ID: 5114]

A spatial expanse of bistable system can support traveling wavefront which is an interface between different stable states (ex. “on” and “off” states). We investigate a two- A3L-D-1 Complex Communication Sci- dimensional optical bistable device (2DOBD) and its application to maze exploration. We have reported that such a ences 2 device can present not only extension of “on” state, but also reduction mode in which “on” state area retreats from dead- DATE: 2017/12/5 15:40–18:20 end path. In this paper we report controllability of wavefront ROOM: Room 4 propagation properties by light intensity, which is an impor- Chair: Naoki Wakamiya (Osaka University) tant advantage of this device for realization of high function- £ ality in natural computing. ¢A3L-D-1-1 ¡Multi-Objective Particle Swarm Optimizer Keywords: Optical bistability, Wavefront propagation, Nat- Networks with Tree Topology ural computing, Maze exploration Kyosuke Miyano (Tokyo City University), Hidehiro Nakano (Tokyo City University), Arata Miyauchi (Tokyo City Uni- versity) ⇒ £ Proc. pp. 283–286, [Paper ID: 5064] A3L-C-7 Adaptation of Decision Making with Chaotic ¢ ¡ Multi-Objective Particle Swarm Optimizer (MOPSO) is a Semiconductor Laser kind of metaheuristic algorithms for solving multi-objective Takatomo Mihana (Saitama University), Yuta Terashima optimization problems. In MOPSO, a global best solution (Saitama University), Makoto Naruse (National Institute set corresponding to the Pareto solution set is stored in an of Information and Communications Technology), Song-Ju archive memory. Island-model MOPSO (IMOPSO) has a Kim (Graduate School of Media and Governance, Keio Uni- tree topology of sub-swarms; a upper layer sub-swarm search versity), Atsushi Uchida (Saitama University) the Pareto solution set in the multi-objective function, while ⇒ Proc. pp. 275–278, [Paper ID: 5020] lower layer sub-swarms search the best solutions in each sin- Decision making using the tug-of-war method is useful in gle objective function. IMOPSO can effectively search high- terms of adaptation for hit probability in the multi-armed quality Pareto solution set. This paper investigates the per- Bandit problem. We numerically implement decision mak- formance of some migration strategies. Then, it is shown ing using chaotic waveforms of a semiconductor laser. We that a migration strategy between lower layer sub-swarms investigate the effect of the memory parameter of the tug-of- can provide the good search performance. In the simulation war method on the adaptation of decision making. We found experiments, the results for some benchmark problems are that there is a trade-off between the adaptation and conver- shown. gence for decision making when the memory parameter is Keywords: Particle Swarm Optimization, Evolutionary changed. Computation Keywords: Decision making,laser chaos £ £ ¢A3L-D-1-2 ¡Signal Reception and Phase Detection with Nano-Mechanical Vibration for Em-Based Nanoscale ¢A3L-C-8 ¡Dynamics of Stable-Unstable Switching of a Laser Diode Subject to Feedback Digital Communication Jia-Xin Dong (City University of Hong Kong), Song-Sui Li Yukihiro Tadokoro (TOYOTA Central R&D Lab., Inc.), Yu- (City University of Hong Kong), Sze-Chun Chan (City Uni- taka Ohno (Nagoya university), Hiroya Tanaka (TOYOTA versity of Hong Kong) Central R&D Lab., Inc.) ⇒ ⇒ Proc. pp. 279–282, [Paper ID: 5016] Proc. pp. 287–290, [Paper ID: 5023]

Stable-unstable switching is observed in a distributed- Digital communication between the nanoscale terminals is a feedback laser diode subject to optical feedback. The switch- key function in upcoming nanoscale systems. The proposed ing is between a stable state of a constant intensity and an detector provides three important functions at nanoscale: a reception antenna for the incoming signal in the kHz/MHz

35 band, ampliﬁcation of the received signal, and extraction of A3L-D-2 Complex Networks and Sys- the phase that contains the information of the transmitted tems / Image and Signal Processing data. All of these functions are provided by mechanical vibration of a carbon nanotube (CNT) tip, and a metal plate placed below the CNT. Numerical evaluations demonstrate DATE: 2017/12/5 15:40–18:20 that the proposed nanoscale phase detector has the ability to ROOM: Room 4 receive digitally phase-modulated signals. Chair: Abdelali El Aroudi (Universitat Rovira i Virgili) Keywords: NEMS, nanocommunication, carbon nanotube £ ¢A3L-D-2-1 ¡ Operational Evaluation of Self-Powered Landslide Disasters Monitoring System £ Tatsuya Furukawa (hiroshima city university), Koichi Shin ¢A3L-D-1-3 ¡ A Stochastic Resonance Receiver for 4- (hiroshima city university), Masahiro Nishi (hiroshima city PAM Signals university) Yasuo Nakashima (Nagoya University), Takaya Yamazato ⇒ Proc. pp. 299–302, [Paper ID: 5118] (Nagoya University), Yukihiro Tadokoro (TOYOTA Central In recent years, landslide disasters caused by localized tor- R&D Labs.), Shintaro Arai (Okayama University of Science) rential rain have damaged seriously in Japan. We built a ⇒ Proc. pp. 291–294, [Paper ID: 5029] monitoring system to suppress damage caused by landslide Stochastic Resonance (SR) is considered as a noise en- disasters, and started operation in May 2015. In the past, hanced phenomenon, that a response of a nonlinear sys- we tried to model operational availability of the system, and tem is improved by noise. In previous studies, an application clariﬁed the requirement to achieve 100% availability. After of SR for wireless communication has been discussed and that, the operation of the new system satisfying the require- an SR receiver, the receiver that demodulate a received sig- ment was carried out from November 2016, and we evalu- nal by SR, was proposed. However, these studies have used ated the actual operational data. In the evaluation as of May a basic modulation signal and have not focused on a signal 2017, the system achieved 100% availability. Moreover, we that transmit information by multi-level amplitude. In this showed the practicality of modeling the system in the moun- paper, we consider an SR receiver for 4-PAM signals. By tain. applying SR, it can demodulate 4-pulse amplitude modula- Keywords: Land disasters, Continuous monitoring, Real tion (4-PAM) signals by a 1-bit resolution device. We show time casting, Solar power, Infrared camera, Operation rate the system model of the receiver, evaluate its performance by simulation, and show its availability. Keywords: Stochastic resonance, Demodulation, Noise, £ Wireless communication, 4-PAM ¢A3L-D-2-2 ¡Out of Maximum Power Point of a PV Sys- tem Because of Subharmonic Oscillations Abdelali El Aroudi (Universitat Rovira i Virgili) ⇒ £ Proc. pp. 303–306, [Paper ID: 5102] ¢A3L-D-1-4 ¡Partialization Analysis for Estimating Hub In this paper, the nonlinear dynamical behavior and stabil- Network Topology ity analysis of a high-voltage-gain quadratic boost converter Kaori Kuroda (Tokyo University of Science), Takuya Mat- fed by a photovoltaic (PV) source is addressed. Using the sumoto (Tokyo University of Science), Mikio Hasegawa nonlinear models of the converter, the PV source and the (Tokyo University of Science) MPPT controller, the dynamics of the system are explored ⇒ Proc. pp. 295–298, [Paper ID: 5189] in terms of the irradiance using the circuit-level switched In layer2 networks, if there is a loop on a hub network, model implemented in PSIM software. The time domain or a wire is broken, connected terminals will not be able simulations show that at relatively high irradiance levels, the to communicate. To resolve this issue, we estimate a hub system may exhibit undesired subharmonic oscillations and network topology. We transformed the packet data to con- the Maximum Power Point Tracking control cannot make the tinuous time series by using an extended kernel density esti- system to work in the maximum power as desired. mation method, and applied the partialization analysis to the Keywords: HIGH VOLTAGE GAIN, POWER CON- continuous time series. To check the validity of the proposed VERTER, PV SYSTEM, MPPT, SUBHARMONICS method, we conducted experiments using a network simulator and implemented system composed multiple hubs and terminals. As a result, we could estimate the network topol- £ ogy with high estimation accuracy. ¢A3L-D-2-3 ¡Steady-State Analytical Expression of Volt- Keywords: Network topology, Partialization analysis, age Shift in Resonant Drivers with Clamp Diode Layer2 network Hanako Matsubara (Chiba University), Xiuqin Wei (Chiba Institute of Technology), Hiroo Sekiya (Chiba University) ⇒ Proc. pp. 307–310, [Paper ID: 5113]

This paper gives an analytical explanations of the voltage

36 shift. The class-E driver is considered as a concrete example. By carrying out steady-state analysis, it is clarified that Synaptic devices and neuron circuits employing ferroelectric thin films are technically reviewed. Ferroelectric field- the voltage shift occurs due to coexistence of resonant and ff gate capacitances. The explanations are valid for not only e ect transistor and thin-film transistor can provide interesting synaptic behaviors including an adaptive-learning func- the class-E driver but other resonant driver circuits. There- fore, it is expected that the given theory can be applied res- tion by exploiting partial switching events for the ferroelectric polarization. onant driver designs widely and effectively. The validity of the analysis is confirmed by comparisons with PSpice simu- Keywords: synapse device, ferroelectric, field-effect transis- lation and experimental results. tor, adaptive-learning Keywords: class-E driver, soft switching, SiC MOSFET

A3L-E-2 Machine Learning / Evolu- A3L-E-1 Neuromorphic Systems and tionary computations Electronic Devices 3 DATE: 2017/12/5 15:40–18:20 ROOM: Room 5 DATE: 2017/12/5 15:40–18:20 Chairs: Basabi Chakraborty (Iwate Prefectural University) ROOM: Room 5 and Goutam Chakraborty (Iwate Prefectural University) Chair: Mutsumi Kimura (Ryukoku University) £ £ ¢A3L-E-2-1 ¡A Harmonic Extension Approach for Col- ¢A3L-E-1-1 ¡A Model for Amorphous Oxide Semicon- laborative Ranking ductor (AOS) Devices to Mimic Synaptic Transmission Da Kuang (University of California, Los Angeles), Zuo- Behaviors qiang Shi (Tsinghua University), Stanley Osher (University Karim Khan (Ningbo Institute, Chinese Academy of Sci- of California, Los Angeles), Andrea Bertozzi (University of ences), Weiliang Wang (Ningbo Institute, Chinese Academy California, Los Angeles) of Sciences), Mingzhi Dai (Ningbo Institute, Chinese ⇒ Proc. pp. 318–321, [Paper ID: 5048] Academy of Sciences), Mutsumi Kimura (Ryukoku Univer- sity) We present a new perspective on graph-based methods for ⇒ Proc. pp. 311–313, [Paper ID: 5197] collaborative ranking for recommender systems. Unlike user-based or item-based methods that compute a weighted Amorphous oxide thin film transistors have been em- average of ratings given by the nearest neighbors, or low- ployed as the artificial synaptic devices to simulate important rank approximation methods using convex optimization and synaptic functions including excitatory postsynaptic current the nuclear norm, we formulate matrix completion as a se- (EPSC). However, most of the investigations have addressed ries of semi-supervised learning problems, and propagate the the issue of spike timing, cycles, and materials, which are known ratings to the missing ones on the user-user or item- time demanding; but the bias amplitude dependence study is item graph globally. The semi-supervised learning problems rarely reported in a quantitative manner. Here, the depen- are expressed as Laplace-Beltrami equations on a manifold, dence of key parameters for representative synaptic trans- or namely, harmonic extension, and can be discretized by a mission behaviors on electrical stresses has been modeled point integral method. Our approach, named LDM (low di- in a quantitative manner. This study enables us to easily ob- mensional manifold), does not impose a low-rank Euclidean tain different EPSC behaviors with less time consumption by subspace on the data points, but instead minimizes the di- adjusting electrical stresses on different terminals, without mension of the underlying manifold. It turns out to be par- needing to change materials or processes. ticularly effective in generating rankings of items, showing ffi Keywords: ESPC(excitatory postsynaptic current), amor- decent computational e ciency and robust ranking quality phous oxide devices compared to state-of-the-art methods. Keywords: Recommender Systems, Low Dimensional Manifold, Label Propagation £ ¢A3L-E-1-2 ¡Adaptive-Learning Functions of Ferroelec- tric Field-Effect Transistors for Synaptic Device Applica- £ tions ¢A3L-E-2-2 ¡Derivation of Multiplicative Update Rules Sung-Min Yoon (Kyung Hee University), Eom-Ji Kim for Nonnegative Matrix Factorization with Regulariza- (Kyung Hee University), Yeo-Myeong Kim (Kyung Hee tion Terms University), Hiroshi Ishiwara (Tokyo Institute of Technol- Akihiro Koso (Okayama University), Norikazu Takahashi ogy) (Okayama University) ⇒ Proc. pp. 314–317, [Paper ID: 5017] ⇒ Proc. pp. 322–325, [Paper ID: 5086]

37 ularization technique is powerful to handle the sparse data. Nonnegative Matrix Factorization (NMF) is an operation Our crime forecasting protocol provides extremely accurate that decomposes a given nonnegative matrix into two non- results compared to the groundtruth. negative factor matrices. NMF is usually formulated as a constrained optimization problem in which an objective Keywords: Crime modeling, Spatio-temporal deep learning, function has to be minimized under the constraint that all Real-time forecasting, Sparsity variables are nonnegative, and the multiplicative update rules are widely used for solving this problem. In this paper, we give a unified method for deriving a multiplicative update £ rule from a given objective function including regularization ¢A3L-E-2-5 ¡A Graph Clustering Method Using Genetic terms. We then apply it to 22 objective functions obtained Algorithm by adding two types of regularization terms to 11 error func- Goutam Chakraborty (Iwate Prefectural University) ⇒ tions. Proc. pp. 334–337, [Paper ID: 5061] Keywords: Nonnegative Matrix Factorization, Multiplica- In several domains, the available information can be rep- tive Update Rule, Regularization Term resented as a graph where an unit of information is a node. Links are relations between two units of information. For example, two web-sites on the world-wide-web are connected, £ if there is a hyperlink from one to the other. Members of ¢A3L-E-2-3 ¡Time Series Classification with New Simi- a social network are connected as a graph. Scientific pa- larity Measure: an Application for Automatic Detection pers can be connected in many ways, through common key- of Driver’s Distraction words, references, or authorship. Most of such networks Basabi Chakraborty (Iwate Prefectural University), Sho form communities, where within communities the relations Yoshida (Iwate Prefectural University) (node interconnections) are strong, whereas between com- ⇒ Proc. pp. 326–329, [Paper ID: 5163] munities the links are less. Finding those communities, and Classification or grouping of time series data is now increas- finding the important (central) nodes of a community are two ingly needed to solve various real life problems. As time main problems, for several mining applications. Identifying series data is huge, a proper representation method and an communities is Clustering the network. Most of the exist- efficient similarity measure are important factors for the suc- ing algorithms, like k-means, need a pre-defined value of the cess of any clustering or classification method involving time number of clusters. In this work, we introduce a genetic al- series data. Though a lot of research has already been done gorithm based approach, where the optimum number of clus- in this line, dynamic time warping (DTW) seems to be the ters are automatically determined, through a few generations most common method used for measuring similarity of two of the genetic search. time series data. Though classification accuracy of time se- Keywords: small world graph, clustering, genetic algorithm ries classification with DTW is quite satisfactory, computational cost is also very high. In this work, newly proposed measures by the authors have been used for time series clas- £ sification problem. Publicly available benchmark data sets ¢A3L-E-2-6 ¡ PSO-RP : Particle Swarm Optimization as well as time series data from a real life problem of de- with Refractory Period of Particle Velocity Update tecting driver’s distraction with cognitive load are used for Yuki Nagano (Chukyo University), Hideharu Toda (Chukyo classification with the proposed measures. The comparative University), Masatoshi Sato (Tamagawa University), Hisashi effectiveness of the proposed measures over DTW has been Aomori (Chukyo University) examined by the experimental results. ⇒ Proc. pp. 338–341, [Paper ID: 5097] Keywords: Time series classification, Similarity measure, Particle swarm optimization (PSO) is one of the metaheuris- Dynamic time warping, Genetic algorithm, Distracted driv- tics where each particles in a swarm searches an optimal so- ing, lution of the given objective function. Because of the suc- cinctness of its algorithm, the implementation cost of the PSO in software and hardware is very low, and it is expected £ to be applied in various problems. However, the global opti- ¢A3L-E-2-4 ¡Deep Learning for Real Time Crime Fore- mization of multimodal objective functions utilizes the PSO casting is very difficult, due to the fact that particles are easy to fall Bao Wang (UCLA), Duo Zhang (UCLA), Duanhao Zhang into local optimums in them. In this paper, to deal with this (UCLA), Paul Brantingham (UCLA), Andrea Bertozzi difficulty, the PSO with refractory period of particle velocity (UCLA) update is proposed. In the event of the particle velocity up- ⇒ Proc. pp. 330–333, [Paper ID: 5132] date, if a particle is located near the global best called gbest, In this paper, we apply the ST-ResNet to real time crime velocity of particle will be lost. To prevent this velocity lost, prediction on an hourly timescale. Due to the low regular- we give refractory periods for a particle. In refractory periods, a particle keeps its last velocity. In order to comfirm the ity of the crime data in both space and time, we perform ff both spatial and temporal regularization of the data, this reg- e ectiveness of the proposed method, the proposed method

38 was applied to the 28 CEC’13 test functions. The experimen- £ tal results showed that search performance of the proposed ¢B1L-A-1-1 ¡Phase Reduction Theory for Strongly Cou- method outperforms that of the standard PSO 2011(SPSO- pled Limit-Cycle Oscillators 2011). Wataru Kurebayashi (Aomori University), Sho Shirasaka Keywords: PSO, Optimization, Metaheuristics , Refractory (The University of Tokyo), Hiroya Nakao (Tokyo Institute Period of Technology) ⇒ Proc. p. 342, [Paper ID: 5180]

Unlike the conventional phase reduction method limited to weakly perturbed oscillators, a generalized phase reduction method [W. Kurebayashi et al., Phys. Rev. Lett., 2013] has enabled the reduction of a strongly perturbed limit-cycle os- B0L-A Plenary Talk 2 cillator to a one-dimensional phase model. In this study, by / / applying the generalized phase reduction method, we de- DATE: 2017 12 6 8:30–9:30 rive a new phase model that enables theoretical analysis of ROOM: Room 2&A strongly coupled oscillators. Since this method can explicitly Chair: Luciano Buono (University of Ontario Institute of take into account the deformation of orbits due to strong per- Technology) turbations, our model can describe nontrivial phase dynamics £ of strongly coupled oscillators on deformed manifolds. B0L-A-1 Advantage of Diversity in Network Dynamics: ¢ ¡ Keywords: Synchronization, Oscillators, Phase Reduction Convergence Because of (not Despite) Diﬀerences Adilson E. Motter (Northwestern University)

Common wisdom assumes that individual entities are more £ likely to exhibit the same or similar behavior if they are ¢B1L-A-1-2 ¡Noise-Induced Synchronization of Pierce equal to each other―imagine animals using the same gait, Oscillators lasers pulsing together, birds singing the same notes, and Kazuyoshi Ishimura (Ritsumeikan University), Ryota Inden agents reaching consensus. In this presentation, I will show (Ritsumeikan University), Isao Tokuda (Ritsumeikan Uni- that this assumption is in fact false in networks of interact- versity) ing entities. This surprising observation is rooted in a new ⇒ Proc. pp. 343–346, [Paper ID: 5082] network phenomenon we term “asymmetry-induced symme- Noise-induced synchronization is a phenomenon that au- try” (AIS), in which the state of the system can be symmet- tonomous oscillators are synchronized by common fluctua- ric only when the system itself is not. Using spontaneous tion noise. To observe the synchronization, we designed the synchronization as a model process, I will discuss scenarios circuit which consists of two pierce circuits with a branch- where the state in which all nodes exhibit identical dynamics ing path for the common gaussian noise source. And then, (a state of maximum symmetry) can only be realized when we swept standard deviation of the noise source. Finally, we the nodes themselves are not identical. AIS can be seen as show that the gaussian noise has possibility to efficiently syn- the converse of the well-studied phenomenon of symmetry chronize two oscillators. breaking, where the state has less symmetry than the system. Keywords: Noise-induced synchronization, Pierce oscilla- AIS has far-reaching implications for processes that involve tor converging to uniform states; in particular, it offers a mechanism for yet-to-be-explained convergent forms of pattern formation, in which an asymmetric structure develops into a symmetric one. AIS also has implications for consensus £ B1L-A-1-3 Emergence of hyperchaos and Synchroniza- dynamics, where it gives rise to scenarios in which interact- ¢ ¡ tion in a Simple Autonomous Discrete System ing agents only reach consensus when they are sufficiently Adrian Arellano-Delgado (CONACYT-UABC Universi- different from each other. dad Autonoma de Baja California), Rosa Martha Lopez-´ Keywords: Complex Networks & Systems, Synchroniza- Gutierrez´ (Universidad Autonoma de Baja California), Ro- tion, Optimization drigo Mendez-Ram´ ´ırez (Centro de Investigacion´ Cient´ıfica y de Educacion´ Superior de Ensenada), Cesar Cruz-Hernandez´ (Centro de Investigacion´ Cient´ıfica y de Educacion´ Superior de Ensenada) ⇒ Proc. pp. 347–350, [Paper ID: 5139] B1L-A-1 Synchronization (SS) In this work, diffusive coupling of a simple autonomous discrete system resulting in emergence of hyperchaos is pre- DATE: 2017/12/6 10:15–12:35 sented. The simple discrete system would never generate ROOM: Room 1 chaos by itself unless it is coupled as proposed in this work. Chairs: Wataru Kurebayashi (Aomori University) and Tet- Furthermore, in-phase or anti-phase synchronization of two suro Endo (Meiji University)

39 coupled simple autonomous discrete systems within a com- Synchronization, Excitation plex network is achieved, where the systems maintain the hyperchaotic emergent dynamics. In order to corroborate that the emerging dynamics are hyperchaotic, we calculate the £ Lyapunov exponents. ¢B1L-A-2-2 ¡ Fractional Generalized Quasi- Keywords: Emergence of hyperchaos, synchronization, dis- Synchronization of Incommensurate Fractional Order crete systems, complex networks Oscillators Claudia Alejandra Perez-Pinacho (CINVESTAV-IPN), Rafael Martinez-Guerra (CINVESTAV-IPN), Christopher £ Diego Cruz-Ancona (CINVESTAV-IPN) ⇒ ¢B1L-A-1-4 ¡Synchronous Behavior in Asymmetrically Proc. pp. 359–362, [Paper ID: 5181] Coupled Pendulums The problem of fractional generalized synchronization Joaquin Alvarez (CICESE), Jonatan Pena Ramirez (CI- (FGS) in master-slave configuration is well understood for CESE), Isaac Ruiz Ramos (CICESE) ⇒ fractional order chaotic systems of commensurate order. Proc. pp. 351–354, [Paper ID: 5154] Here, assuming some algebraic properties of the systems, ff It is well-known that a pair of pendulum-like oscillators, we show that the state of FGS is lost for strictly di erent in- placed on a suspended rigid bar, may exhibit in-phase or anti- commensurate fractional order chaotic systems (IFOCS). As phase synchronized motion. Here, a novel coupling struc- an outcome a fractional generalized quasi-synchronization ture, in which the pendulums are asymmetrically coupled, is (FGqS) state can be only achieved. presented. Due to the physics underlying the dynamics of the Keywords: Fractional order systems, Quasi- coupling, the pendulums do not achieve complete in-phase synchronization, Incommesurate order, Canonical forms, or anti-phase synchronization. Instead, the pendulums oscil- Dynamical controller late at the same frequency but with different amplitudes and with a phase difference close to pi or zero. The amplitude, phase, and frequency of the synchronous solutions, are deter- £ mined by using the Poincare method of perturbation and the ¢B1L-A-2-3 ¡ Synchronization of Piece-Wise Linear obtained results are illustrated by means of numerical simu- Oscillators Using Time Delay Approximations lations. Manuel Alberto Lizarraga-Lizarraga (CICESE), Luis Ale- Keywords: synchronization, coupled oscillators, asymmet- jandro Marquez-Martinez (CICESE), Jonatan Pena-Ramirez ric coupling (CICESE) ⇒ Proc. pp. 363–366, [Paper ID: 5190]

We investigate the onset of synchronous solutions in piecewise linear oscillators, in which the interaction is subject to a time-delay, which is replaced by a Pade approximation. In this way, some analytical conditions for the onset of B1L-A-2 Synchronization (RS) anti-phase synchronization can be derived. Moreover, it is shown that for small values of time delay (lower than the / / DATE: 2017 12 6 10:15–12:35 unity), the Pade approximation stability region coincides ROOM: Room 1 with the one of a delayed controller. Chair: Christopher D. Cruz-Ancona (Center for Research Keywords: Huygens’ synchronization, piece-wise linear and Advanced Studies of the National Polytechnic Institute) systems, mechanical systems £ ¢B1L-A-2-1 ¡ Muscles Excite and Synchronize Them- selves Through Their Intrinsic Dynamics Yoichi Masuda (Department of Mechanical Engineering, Osaka University), Masato Ishikawa (Department of Me- chanical Engineering, Osaka University) B1L-B-1 Dynamical Brain and the In- ⇒ Proc. pp. 355–358, [Paper ID: 5142] formation Processing We propose a simple pattern generator model to clarify the function of the body and neuron in animal’s pattern genera- DATE: 2017/12/6 10:15–12:35 tion. The model is based on the stretch reflex system which ROOM: Room 2 is a fundamental local feedback mechanism in animals. We Chair: Kiyohisa Natsume (Kyushu Institute of Technology) investigate some characteristics of this model by stability £ analysis and simulations. The simulation demonstrates ¢B1L-B-1-1 ¡Efficient Control of Theta Traveling Waves emergence of a limit cycle and phase synchronization by by Synchronized Inhibition Through Gap Junctions and only the physical interaction through the body dynamics. GABAergic Connections in a Hippocampal CA3 Model Keywords: Oscillator, Bifurcation, Muscle, Neuron, Reflex, Toshikazu Samura (Yamaguchi University), Yutaka Sakai

40 (amagawa University Brain Science Institute), Hatsuo model of the cortex with layer structure using supercomputer Hayashi (Kyushu Institute of Technology), Takeshi Aihara K. We added one communication feature to reduce commu- (amagawa University Brain Science Institute) nication frequency using spike propagation delay of long- ⇒ Proc. pp. 367–370, [Paper ID: 5094] range connections. The parallelization showed reduction of communication frequency and elapsed time, and ideal scal- It has been demonstrated that directional theta traveling ing performance. The tile partitioning parallelization may waves are organized in a biophysical hippocampal CA3 work for a simulation of the cortex at whole-brain scale. recurrent network model. Inhibitions play an important Keywords: Large-scale simulation, Cortex, HPC role in organizing traveling waves. In the hippocampus, both gap junctions and GABAergic connections exist between interneurons and affect interactions between interneu- £ rons. We evaluated the role of the interaction through both ¢B1L-B-1-4 ¡The Brain Rhythm Related to the Music types of connections and found that the connectivity enables Preferences and the Detection of the Preference a hippocampal CA3 recurrent network model to suppress Hirokazu Sadahisa (Kyushu Institute of Technology), the activities of interneurons but to synchronize interneu- Yuya Tsuji (Kyushu Institute of Technology), Shinya rons. Although inhibitions are reduced, synchronized inhi- ffi Kudo (Kyushu Institute of Technology), Kiyohisa Natsume bitions are su cient to control directional traveling waves. (Kyushu Institute of Technology) These results suggest that the interaction between interneu- ⇒ Proc. pp. 379–382, [Paper ID: 5085] rons through gap junctions and GABAergic connections contribute to efficient control of theta traveling waves in the hip- Previous study showed that there are EEG related to the mu- pocampus. sic preferences during thinking the music preference. We ex- Keywords: Hippocampus, Traveling wave, CA3, Gap junc- amined EEG related to the music preferences when listening tions to the piece. As a result, we found that EEG power between the like piece and the dislike piece is significant difference during not only thinking but also listening. Therefore, we £ suggest that there are EEG related to the music preferences ¢B1L-B-1-2 ¡The Hippocampal Beta Rhythm and the during listening to the music. Moreover we found that there Computational Model are common significant regions for participants. Thus, we Itsuki Kageyama (Kyushu Institute of Technology), Katsumi suggest that these regions related to the music preferences. Tateno (Kyushu Institute of Technology), Kiyohisa Natsume Keywords: Brain, EEG, Music, Preferences, EEG power (Kyushu Institute of Technology) ⇒ Proc. pp. 371–374, [Paper ID: 5095]

Hippocampal beta rhythm is involved in the memory con- solidation. Cholinergic projections from the septum are involved in the generation of the rhythm. But the induction B1L-B-2 Neurodynamics / Learning mechanism has not yet been clarified. These results suggest that carbachol-induced bursts of beta oscillation can be in- and memory duced by the minimal network model consisting of the pyra- midal and inhibitory neurons, and the astrocyte. The astro- DATE: 2017/12/6 10:15–12:35 cytes can contribute to the generation of beta oscillation as ROOM: Room 2 well as to the generation of the epileptic discharges. Chair: Hideyuki Kato (Tokyo University of Technology) Keywords: Hippocampus, Memory, Astrocyte, Beta £ rhythm, Carbachol ¢B1L-B-2-1 ¡ Nonlinearity in Phenomenological STP Model for Diverse Synaptic Dynamics Hideyuki Kato (Tokyo University of Technology) £ ⇒ Proc. pp. 383–386, [Paper ID: 5036] ¢B1L-B-1-3 ¡Parallelization of a Spiking Neural Network Activity-dependent manner of changes in synaptic efficacy, Model of Layered Cortical Sheet Consisting of Multiple namely, short-term plasticity (STP), is observed in several Cortical Regions areas of cortical or hippocampal neurons. A canonical Jun Igarashi (RIKEN) phenomenological STP model well mimics both kinetics ⇒ Proc. pp. 375–378, [Paper ID: 5191] of depression and facilitation synapses. The canonical A parallel computing of spiking neural networks of the cor- model, however, cannot realize supralinear facilitation in tex at whole-brain scale is a grand challenging in the next excitatory synapses on inhibitory low-threshold spiking decade. In a whole-brain scale simulation, load imbalance neurons. Some biophysically detailed models account for and increasing communication of spikes reduce computa- the facilitation growth of the synapses but the models too tional efficiency. To overcome the problems, we investigated much cost in large-scale neural network simulations. In tile partitioning parallelization of a spiking neural network this study, we propose a model as simple as the canonical phenomenological model by introducing nonlinearity.

41 Keywords: dynamical synapse, information transmission, B1L-C Laser Dynamics and Complex facilitation, depression Photonics 2

DATE: 2017/12/6 10:15–12:35 £ ROOM: Room 3 ¢B1L-B-2-2 ¡Mathematical Model of TRPM2 Activation Chairs: Kazutaka Kanno (Fukuoka University) and Fu- in Pancreatic β-Cells miyoshi Kuwashima (Fukui University of Technology) Kantaro Fujiwara (Tokyo University of Science), Hiroy- asu Ando (Tsukuba University), Tohru Ikeguchi (Tokyo £ University of Science), Masashi Yoshida (Jichi Medical ¢B1L-C-1 ¡A Brief History of Chaos in Gas Lasers in Ar- University), Masafumi Kakei (Saitama Citizens Medical gentina and an Application in Atmospheric Optics Center) Damian´ Gulich (Instituto de F´ısica de L´ıquidos y Sistemas ⇒ Proc. pp. 387–390, [Paper ID: 5187] Biologicos,´ CONICET, UNLP) ⇒ Proc. pp. 395–397, [Paper ID: 5203] In pancreatic β-cells, glucose-induced membrane depolarization is mainly realized by closure of ATP-sensitive K+ The state of chaos induced by a feedback loop in gas lasers channel, followed by activation of voltage-dependent Ca2+ has been a subject relatively little explored in the literature. channels. Recently, the importance of TRPM2 channel However, in the 1960s this phenomenon was in fact studied has been reported by physiological experiment. Activation and employed to perform alignment work in Argentina. We of the TRPM2 channel works in concert with closure of review this history and present a more recent application for ATP-sensitive K+ channel to effectively induce membrane the study of atmospheric turbulence. depolarization to initiate insulin secretion. However, its Keywords: chaos, gas laser, signals mechanism is still unclear. In this study, we construct a mathematical model of pancreatic β-cell model including TRPM2 channel. By comparing its membrane potential £ characteristics with the results obtained physiologically, the ¢B1L-C-2 ¡ Enhancing Dynamical Response in Non- plausibility of our model is discussed. The effect of TRPM2 Hermitian Systems channel is also investigated theoretically. Satoshi Sunada (Kanazawa University) ⇒ Keywords: pancreatic β-cell, TRPM2 channel Proc. p. 398, [Paper ID: 5043] Controlling and maximizing the outputs or responses to a given input is important in many engineering systems. In £ this talk, I introduce a perturbation response theory for non- ¢B1L-B-2-3 ¡A Study on Synapse Update of Inactive Hermitian dynamical systems. It is shown that the system Cells in Cortical Learning Algorithm response to external forces or perturbations can be signifi- Takeru Aoki (The University of Electro-Communications), cantly enhanced when the system operates at a so-called ex- Keiki Takadama (The University of Electro- ceptional point (EP), i.e., a singular (bifurcation) point due Communications), Hiroyuki Sato (The University of to the non-Hermiticity. As an example, we consider a micro- Electro-Communications) laser perturbed by quantum noises. It is numerically demon- ⇒ Proc. pp. 391–394, [Paper ID: 5024] strated that when the laser operates at an EP, large fluctuating Cortical learning algorithm (CLA) is a time-series data light can be generated. prediction algorithm based on the behavior of human Keywords: Non-Hermitian systems, Exceptional point, Per- neocortex. CLA has many cells connected by synapses, turbation, Excess noise receives a time-series data and predicts the data coming next while updating synapse network. The conventional CLA only update synapses of active cells contributed to £ the prediction during the learning, and other synapses of ¢B1L-C-3 ¡Contrasting Dynamical Properties in Laser inactive cells are neglected and not updated. To encourage and Resonant Tunneling Diodes with Optical Feedback the synapse network construction and improve the prediction Andreas Karsaklian Dal Bosco (RIKEN), Safumi Suzuki accuracy of CLA, in this work we propose methods to update (Tokyo Institute of Technology), Masahiro Asada (Tokyo In- synapses of inactive cells and verify its effectiveness on test stitute of Technology), Hiroaki Minamide (RIKEN) time-series data with/without noise. ⇒ Proc. pp. 399–402, [Paper ID: 5067] Keywords: Hierarchical temporal memory, Cortical learn- We analyze dynamical similarities observed in semicon- ing algorithm, Time-series data prediction ductor lasers and resonant tunneling diodes when subjected to optical feedback. Nonlinear dynamics such as high- frequency pulsations are reported in both systems, express- ing the influence of the delay time on the devices’s be- haviours. We study and compare their respective dynamical mechanisms along with the related frequency properties

42 and ranges. The similarities and diﬀerences between both £ systems are discussed in the perspective of evaluating their ¢B1L-C-6 ¡Numerical Analysis on Dynamics-Dependent performances for optical communication and signal genera- Synchronization in Mutually-Coupled Semiconductor tion. Lasers Keywords: Resonant tunneling diode, optical feedback, Shoma Ohara (Saitama University), Kazutaka Kanno nonlinear dynamics, nonlinear optics (Fukuoka University), Atsushi Uchida (Saitama University) ⇒ Proc. pp. 410–413, [Paper ID: 5021]

£ We numerically investigate chaos synchronization prop- B1L-C-4 Effects of Metal V-Grooved Waveguide Gap erty with delayed feedback and coupling. We focus on the ¢ ¡ ff Width on Super Focusing of High Efficient THz Waves di erent synchronization state for high and low frequency Using Laser Chaos components by applying a low-pass filter on the change of Fumiyoshi Kuwashima (Fukui Unv. of Tech), Takuya Shi- each laser dynamics between chaotic oscillations and low- rao (Fukui Unv. of Tech), Naoya Sakaue (Fukui Unv. of frequency fluctuations (LFF). We demonstrate dynamics- Tech), Masahiko Tani (Research Center for Development of dependent synchronization, where the occurrence of in- ff Far-Infrared Region, University of Fukui), Kazuyoshi Kuri- phase and anti-phase synchronization at di erent frequency hara (Faculty of Education and Regional Studies, Univer- components is determined by the chaotic and LFF dynamics. sity of Fukui), Kohji Yamamoto (Research Center for De- These numerical results agree well with our previous experi- velopment of Far-Infrared Region, University of Fukui), Os- mental results in a photonic integrated circuit with mutually- amu Morikawa (Chair of Liberal Arts, Japan Coast Guard coupled semiconductor lasers. Academy), Hideaki Kitahara (Research Center for Develop- Keywords: Synchronization, Nonlinear dynamics, Chaos ment of Far-Infrared Region, University of Fukui), Makoto Nakajima (Institute of Laser Engineering, Osaka University), ⇒ Proc. pp. 403–405, [Paper ID: 5130]

The generation of a wide-range THz wave is investigated from a photoconductive antenna excited using a chaotic os- B1L-D-1 Dynamical Networks and cillation multimode semiconductor laser with optical delayed feedback by an external mirror. The stable THz wave is ob- Structure tained from the multimode-laser diode excited photoconduc- / / tive antenna by using a laser chaos. For a high sensitive de- DATE: 2017 12 6 10:15–12:35 tection, a metal V-grooved waveguide (MVG) is also used. ROOM: Room 4 As the MVG gap is narrower from 200 to 20 [µm], the de- Chairs: Luciano Buono (University of Ontario Institute of tected signal is increased about twice. Technology) and Antonio Palacios (San Diego State Univer- sity) Keywords: laser chaos, THz wave, Instability £ ¢B1L-D-1-1 ¡Relation between dynamics of network sys- £ tems and those of theirs sub-networks Yunjiao Wang (Texas Southern University), Kiran Chi- ¢B1L-C-5 ¡Chaotic Oscillation of Laser Diode with Pseu- dorandom and Chaotic Signals lakamarri (Texas Southern University), Demetrios Kaza- Satoshi Ebisawa (Niigata Institute of Technology), Joji kos (Texas Southern University), Maria Leite (University of Maeda (Tokyo University of Science), Shinichi Komatsu South Florida at St. Petersburg) ⇒ (Waseda University) Proc. pp. 414–416, [Paper ID: 5211] ⇒ Proc. pp. 406–409, [Paper ID: 5072] Statistics analysis of the connectivity of real world networks We numerically studied the chaotic dynamics of a laser revealed interesting features including existence of commu- diode (LD) with optical injection, where an additional signal nity structures. Such discoveries make it possible to under- is applied to the drive current of the master LD. We compared stand the dynamics of the whole complex network system by the effect of using a chaotic signal and a band-limited pseu- studying those of its subnetwork systems, provided that the dorandom signal having a similar spectrum to the chaotic sig- dynamics in the subnetwork systems somehow can be pre- nal as the applied signal. We showed that the spectrum of the served or partial preserved in the whole system. Many works applied signal is a factor affecting the orbital instability of an have been devoted to the existence of community structures LD system, and that the use of a pseudorandom signal as the while very few works have addressed the possibility of trans- applied signal more greatly enhances the orbital instability lating the dynamics of subnetwork systems to the whole sys- than the use of a chaotic signal. tem. In this paper, we address this issue by focusing on the relations between cycles and fixed points of whole sys- Keywords: Laser Chaos, Chaotic Communication tem and its subnetwork systems based on Boolean network framework. Keywords: Boolean Network Systems, Dynamics, Sub- networks

43 synchronization, bifurcation

£ ¢B1L-D-1-2 ¡Network Cascades: Unfolding, Modeling, and Control Adilson Motter (Northwestern University) ⇒ Proc. pp. 417–418, [Paper ID: 5210] B1L-D-2 Control and robotics A characteristic property of networks is their ability to / / propagate inﬂuences, such as infectious diseases, behavioral DATE: 2017 12 6 10:15–12:35 changes, and failures. An especially important class of such ROOM: Room 4 contagious dynamics is that of cascading processes. These Chair: Yuki Nishimura (Kagoshima University) processes include, for example, cascading failures in in- £ frastructure systems, extinctions cascades in ecological net- ¢B1L-D-2-1 ¡ Analysis of a Pseudo-Decentralized works, and information cascades in social systems. In this Discrete-Time Algorithm for Estimating Algebraic presentation, I will discuss recent progress and challenges Connectivity of Multiagent Networks associated with the modeling, prediction, detection, and con- Tomohisa Urakami (Okayama University), Norikazu Taka- trol of cascades in networks. In particular, I will present hashi (Okayama University) new mathematical and computational models for cascading ⇒ Proc. pp. 427–430, [Paper ID: 5013] blackouts in power-grid networks that are both realistic and The algebraic connectivity is an important measure of amenable to rigorous analysis. a network because it represents how well the network Keywords: cascades, networks, nonlinear dynamics is connected. Recently, Yang et al. proposed a pseudo- decentralized continuous-time algorithm for all agents in a multiagent network to estimate the algebraic connectivity. £ In this paper, we consider a discrete-time version of this ¢B1L-D-1-3 ¡Broad Spectrum Nonlinear Channelizer algorithm, and examine the validity through theoretical Anonio Palacios (San Diego State University), Visarath In analysis and numerical experiments. (Space and Naval Warfare Center), Patrick Longhini (Space Keywords: Multiagent Network, Algebraic Connectivity, and Naval Warfare Center) Pseudo-Decentralized Algorithm, Discrete-Time Algorithm ⇒ Proc. pp. 419–422, [Paper ID: 5208]

The Nonlinear Channelizer is an integrated circuit made up of large parallel arrays of analog nonlinear oscillators cou- £ pled unidirectionally, which, collectively, serve as a broad- ¢B1L-D-2-2 ¡ Global Solution to Nonholonomic Sys- spectrum analyzer with the ability to receive complex signals tem with Stochastic Feedbacks Based on Non-Smooth containing multiple frequencies and instantaneously lock-on Stochastic Lyapunov Function or respond to any arbitrary input Radio Frequency (RF) sig- Taiga Uto (Graduate School of Science and Engineering, nal in a few oscillation cycles. This manuscript provides a Kagoshima University), Yuki Nishimura (Graduate School review of the theory, numerical simulations and some engi- of Science and Engineering, Kagoshima University) neering details that validate the concept, modeling, design ⇒ Proc. pp. 431–434, [Paper ID: 5030] and fabrication. Stabilization problems of nonholonomic systems are Keywords: nonlinear oscillators, radio-frequency detection, generally difficult due to the lack of the existence of smooth synchronization, coupling-induced oscillations state-feedback laws making the origins asymptotically stable. Recently, the problems are simplified by the strategy of adding white noises as parts of control inputs. Using £ the strategy, we tried further simplifications of control B1L-D-1-4 Bifurcations in coupled Hamiltonian net- ¢ ¡ inputs and stability analysis by restricting the noises to be works one-dimensional and using the approach of non-smooth Pietro-Luciano Buono (University of Ontario Institute of stochastic Lyapunov functions (SLFs). However, the analy- Technology), Antonio Palacios (San Diego State University), sis is still under construction because the SLFs do not ensure Bernard Chan (San Diego State University) the existence of global solutions. In this paper, we carry on ⇒ Proc. pp. 423–426, [Paper ID: 5212] the analysis by providing the global solutions. We present recent results from Chan et al (Dynamical Sys- Keywords: Stabilization by noise, Stochastic Lyapunov tems: an international journal, 32, 2016) on networks of cou- functions, Nonholonomic systems pled Hamiltonian systems and discuss the Hamiltonian-Hopf theorem in this context. We then present a version of the Lya- punov centre theorem for these types of networks. £ Keywords: Hamiltonian, differential equations, networks, ¢B1L-D-2-3 ¡Numerical and Experimental Investigation of Basin for a DC Bus System with Delayed Feedback

44 Control ity or authenticity. In our previous research work, we have Koki Yoshida (Osaka Prefecture University), Keiji Konishi shown that this mode of operation exhibits, under some con- (Osaka Prefecture University), Naoyuki Hara (Osaka Pre- ditions, a chaotic behaviour. We have studied this behaviour fecture University) by evaluating both its level of sensibility and expansivity. In ⇒ Proc. pp. 435–438, [Paper ID: 5119] this paper, we intend to deepen the topological study of the CBC mode of operation and evaluate its property of topo- The present paper investigates a transient stability of a DC logical mixing. Additionally, other quantitative evaluations bus system with delayed feedback control for a step type are performed, and the level of topological entropy has been variation of DC load. The transient stability of the DC bus evaluated too. system depends on the size of basin of its equilibrium point. Keywords: Cipher Block Chaining,Mode of operation, It is numerically and experimentally shown that the delayed Block cipher, Chaos, Devaney’s chaos, Sensitivity, Expan- feedback controller can increase the size of basin. sivity, Topological mixing, Topological entropy Keywords: DC power supply, Constant power load, De- layed feedback, Time-varying load, Basin of attraction £ ¢B1L-E-3 ¡Synchronization of Mixed-Mode Oscillations from a Two Coupled Driven Bonhoeﬀer-Van der Pol Os- cillator Katsuhiro Ogawa (Meiji University) B1L-E Chaos and Bifurcation ⇒ Proc. pp. 447–450, [Paper ID: 5037]

DATE: 2017/12/6 10:15–12:35 Mixed-mode oscillations (MMOs) are phenomena discov- ROOM: Room 5 ered in chemical experiment. We investigate MMOs gen- Chairs: Hidetaka Ito (Kansai University) and Masahiro Wada erated by a two-coupled weakly driven Bonhoeﬀer-van der (Konan University) Pol (BVP) oscillator, which is connected by a large induc- £ tor. The parameter values of each oscillator are chosen as the ¢B1L-E-1 ¡Reconstruction of Bifurcation Diagrams Us- same values. Because the two oscillators are weakly coupled ing Time-Series Data Generated by Electronic Circuits chaos synchronization is not observed. However, complete of the Rossler Equations synchronization of MMOs occurs. Yoshitaka Itoh (Tokyo Denki University), Masaharu Adachi Keywords: MMOs, weakly driven BVP oscillator, chaos (Tokyo Denki University) synchronization, synchronization of MMOs ⇒ Proc. pp. 439–442, [Paper ID: 5008]

We describe how to reconstruct bifurcation diagrams from £ time-series data generated by electronic circuits. The recon- B1L-E-4 Authentication Scheme Using Pattern Dynam- structed bifurcation diagrams are estimates of the oscillatory ¢ ¡ ics Based on Coupled Chaotic Maps patterns of the time series when the system parameters are Masahiro Wada (Konan University) changed. Bifurcation-diagram reconstruction could be used ⇒ Proc. pp. 451–454, [Paper ID: 5107] for parametric engineering and physical systems in the real world. In this study, we show that bifurcation diagrams can In this study, we propose a design of an authentication sys- be reconstructed from time-series data generated by an elec- tem using pattern dynamics on a network of coupled chaotic tronic circuit of the Rossler equations. In addition, we esti- maps. Dynamics of pattern generation and its analysis on mate the Lyapunov exponents of the reconstructed bifurca- computer simulation are very interesting for the meanings tion diagrams. of the natural phenomena. There is a feature of uniqueness Keywords: Chaos, Reconstruction of bifurcation diagram, which the same pattern is generated when the parameters and Time-series prediction, Electronic Circuits initial conditions are all the same. We show a framework of authentication system using the pattern dynamics and this feature. Then, we make an application as a software real- £ ized on a computer. Furthermore, we carried out statistical ¢B1L-E-2 ¡The Dynamics of the CBC Mode of Operation analysis for our proposed system and showed validity of the Abdessalem Abidi (Electronics and Microelectronics Lab., system. University of Monastir), Christophe Guyeux (FEMTO-ST Keywords: Authentication, Pattern Dynamics, Coupled Institute, UMR 6174 CNRS, University of Franche-Comte),´ Chaotic Map Mohsen Machhout (Electronics and Microelectronics Lab., University of Monastir) ⇒ Proc. pp. 443–446, [Paper ID: 5033] £ B1L-E-5 Lyapunov Bundle of Saddle Quasi-Periodic In cryptography, the Cipher Block Chaining (CBC), one of ¢ ¡ Solution the most commonly used mode in recent years, is a mode Kyohei Kamiyama (The University of Tokyo), Motomasa of operation that uses a block cipher to provide conﬁdential-

45 Komuro (Teikyo University of Science), Kazuyuki Aihara (The University of Tokyo) Several methods for estimating initial values of moving intrinsic localized modes (moving ILMs) are numerically ⇒ Proc. pp. 455–456, [Paper ID: 5128] investigated in this report. Proper velocity and lifetime are Dynamical systems, such as coupled oscillators, which pro- evaluated for created moving ILMs in order to compare each duce quasi-periodic solutions are ubiquitous. There exists method of the initial value estimation. As a result, the two many complex bifurcations. Bifurcation analysis of quasi- methods, the spline interpolation method using numerically periodic solution attracts many researchers in recent years. rigorous moving ILMs and the perturbation method using Recently, the Newton’s method for saddle quasi-periodic so- eigenvectors of standing ILM, show a good performance to lution was developed. This method uses frequency char- estimate initial values of moving ILMs. acteristics of the solution and can be applicable to higher- Keywords: Intrinsic Localized Mode, Discrete Breather, dimensional saddle quasi-periodic solutions. By using this Nonlinear Vibration, Localization method, we are succeeded in calculate Lyapunov bundle of the saddle quasi-periodic solution in a discrete-time dynamical system. The Lyapunov bundle was deveploped by us for £ analyzing quasi-periodic bifurcations. It is a set of Lyapunov ¢B2L-A-2 ¡ Spatial Properties and Numerical Soli- vectors on a solution and can classify local bifurcation type tary Waves of a nonintegrable Discrete Nonlinear from its topology. In this presentation, we will demonstrate Schr+umlaut+odinger Equation the Lyapunov bundle of saddle quasi-periodic solutions. Li-Yuan Ma (Zhejiang University of Technology), Zuonong Keywords: Lyapunov bundle, saddle torus, quasi-periodic Zhu (shanghai Jiao Tong Univ) solution, discrete-time dynamical system ⇒ Proc. pp. 462–465, [Paper ID: 5204] In this paper, we focus on the spatial properties and solitary wave solutions of nonintegrable dNLS equation. By using £ the planar nonlinear dynamical map approach, we address ¢B1L-E-6 ¡A Numerical Method for Designing Periodic Orbits Embedded in Chaotic Attractors the spatial properties of the nonintegrable dNLS equation. Hidetaka Ito (Kansai University), Hiroomi Hikawa (Kansai Through the constructions of exact period-1 and period-2 University), Yutaka Maeda (Kansai University) orbits of a planar nonlinear map which is a stationary version ⇒ Proc. pp. 457–460, [Paper ID: 5167] of the nonintegrable dNLS equation, we obtain the spatially periodic solutions of the nonintegrable dNLS equation. We This paper proposes a framework for numerical design of also give the numerical simulations of the orbits of the planar continuous-time dynamical systems that bind desired peri- nonlinear map and show how the nonlinear interaction terms odic orbits into a chaotic attractor, with the aim of developing affect those orbits. By using discrete Fourier transform, we flexible pattern generators that can exploit various nonlinear obtain numerical approximations of stationary and travelling phenomena. Our strategy is comprised of the following three solitary wave solutions of the nonintegrable dNLS equation stages: constructing an interim “chaos-generating template”, and show that the nonlinear interaction terms have much deforming the template according to the desired configura- more influence on the form of solitary wave. tion of periodic orbits, and performing appropriate function Keywords: nonintegrable discrete nonlinear Schrodinger¨ approximation to obtain the dynamical system. In this paper, equation we focus on the deformations of the template, and present several numerical examples. Keywords: chaos, unstable periodic orbits, vector field, neu- £ ral networks ¢B2L-A-3 ¡New Wave Phenomena in Nonlinear Discrete Systems Baofeng Feng (Univ. of Texas RGV), Liming Ling (South China Univ. of Technology), Yasuhiro Ohta (Kobe Univer- sity), Zhonong Zhu (Shanghai Jiaotong University) ⇒ Proc. pp. 466–469, [Paper ID: 5205] B2L-A Nonlinear waves and localiza- We are concerned with breather and rogue wave solutions tions 1 to a semi-discrete complex short pulse (CSP) equation. By constructing a generalized Darboux transformation and DATE: 2017/12/6 13:55–15:35 bilinear equations, the multi-breather and higher order rogue ROOM: Room 1 wave solutions are derived and analyzes. Chair: Masayuki Kimura (Kyoto University) Keywords: Darboux transformation, semi-discrete complex £ short pulse equation, breather, rogue wave ¢B2L-A-1 ¡Initial Value Estimation for Moving Intrinsic Localized Modes in Nonlinear Coupled Oscillators Masayuki Kimura (Kyoto University) ⇒ Proc. p. 461, [Paper ID: 5178]

46 £ City University), Hisato Fujisaka (Hiroshima City Univer- ¢B2L-A-4 ¡ Averaging Method Analysis of Inductor- sity) Coupled Bistable Oscillators ⇒ Proc. pp. 478–480, [Paper ID: 5073] Kuniyasu Shimizu (Chiba Institute of Technology), Suguru Tsumura (Chiba Institute of Technology), Takuya Saito We present a tree-structured OFDM demodulator consisting (Chiba Institute of Technology), Tetsuro Endo (Meiji of comb filter blocks. The structure is suitable for demodu- University) lating selectively designated sub-band carrier set. Thus, the ⇒ Proc. pp. 470–473, [Paper ID: 5136] demodulator can be applicable to adaptive OFDM communications through power lines with fluctuating transmission This study investigates propagating wave phenomena in characteristics. The straightforward execution of the demod- inductor-coupled bistable oscillators. By assuming weakly ulation requires the same order of computational complexity nonlinear coupled oscillators, an approximated solution as discrete Fourier transforms. However, exploiting the pe- for the five-coupled bistable oscillators is derived by using riodicity of the internal signals of the demodulator reduces the averaging method by assuming the degenerate frequen- the complexity to the same order as that of the fast Fourier cies.The solution, which represents a multimode oscillation, transforms. is identified to correspond to a propagating wave solution, Keywords: digital comb filter, OFDM communication, fast and is compared with the numerical results. Fourier transform Keywords: Wave propagation, Averaging method, Coupled oscillators, Intrinsic localized mode £ ¢B2L-B-2 ¡Scalable Lossless Image Coding Method Us- £ ing Cellular Neural Networks with Greedy Template Op- ¢B2L-A-5 ¡Interaction of Small-Amplitude Waves with timization for Minimum Rate Coding Discrete Breathers in Strained graphene Hideharu Toda (Chukyo University), Hisashi Aomori Elena Korznikova (Institute for Metals Superplacticity (Chukyo University), Tsuyoshi Otake (Tamagawa Univer- Problems, Russian Academy of Sciences), Iman Evazzade sity), Ichiro Matsuda (Tokyo University of Science), Susumu (Department of Physics, Faculty of Science, Ferdowsi Itoh (Tokyo University of Science) ⇒ University of Mashhad), Daxing Xiong (Department of Proc. pp. 481–484, [Paper ID: 5157] physics, Fuzhou University), Sergey Dmitriev (Institute Because of development of digital archive and diversifica- for Metals Superplacticity Problems, Russian Academy of tion of playback terminal, scalable lossless image coding Sciences) techniques have become indispensable in resent years. How- ⇒ Proc. pp. 474–477, [Paper ID: 5083] ever, in general, coding efficiency of scalable coding is infe- It is known that graphene stretched along the zigzag direc- rior to that of a non-scalable framework. Therefore improve- ffi tion supports gap discrete breathers (also called intrinsic ment of coding e ciency of scalable image coding method ffi localized modes) in the form of two neighboring atoms is very important task. In this paper, to deal with this di - vibrating out-of-phase along the armchair direction [1]. culty, a hierarchical scalable image coding framework with It is also possible to excite a chain of such DBs. In this cellular neural network (CNN) predictors that are trained to ffi work the interaction of small amplitude phonon waves achieve high coding e ciency is proposed. In the proposed propagating along the armchair direction with the chain of method, a CNN predictor having 12 parameters of each layer DBs is analyzed by means of MD simulations based on the is optimized by greedy algorithm utilizing image pyramid. AIREBO interatomic potentials. The proposed method was tested on various standard images for evaluating lossless coding efficiency. Experimental re- Keywords: nonlinear dynamics, discrete breathers, sults support that coding efficiency of our method signifi- graphene cantly outperforms that of conventional methods including the JPEG standards and latest techniques. Keywords: discrete-time cellular neural network, predictor inheritance, hierachical lossless image coding

B2L-B Cellular Dynamical Systems 1 £ ¢B2L-B-3 ¡Bifurcations in an Asynchronous Cellular Au- DATE: 2017/12/6 13:55–15:35 tomaton Model of Gene Network ROOM: Room 2 Takuya Yoshimoto (Kyoto Sangyo University), Hiroyuki Chair: Hiroyuki Torikai (Kyoto Sangyo University) Torikai (Kyoto Sangyo University) £ ⇒ Proc. p. 485, [Paper ID: 5174] ¢B2L-B-1 ¡Serial-in Parallel-Out Discrete Fourier Trans- former with O(N) Cells Bifurcations in an asynchronous cellular automaton model Ena Kohno (Hiroshima City University), Akiyoshi Yasuda of gene network are analyzed. (Hiroshima City University), Takeshi Kamio (Hiroshima

47 Keywords: Gene Network Ryusuke Akeno (HOSEI University), Toshimichi Saito (HOSEI University) ⇒ Proc. pp. 494–497, [Paper ID: 5070] £ This paper presents the imaginary particle swarm optimizer B2L-B-4 Analysis of a discretized Bifurcating Neuron ¢ ¡ with reset function (iPSOR) for maximum power point track- Model Based on Simple Feature Quantities ing in photovoltaic array under partial shading condition. Kazuya Sugita (Hosei University), Toshimichi Saito (HO- The cost function corresponds to the voltage-versus-power SEI University) characteristic of the photovoltaic array. Depending on ⇒ Proc. pp. 486–489, [Paper ID: 5077] insolation and temperature, the cost function and its MPP This paper studies dynamics of a bifurcating neuron cir- vary in a complicated way. In order to track the dynamic cuit. In the input signal, deriving sum of two sawtooth MPP, the iPSOR includes several strategies: imaginary base signals of different frequencies are used. The circuit particle swarm consisting of sampled voltages for real-time can exhibit a variety of chaotic and super-stable periodic operation, a flexible reset method of the past history for spike-trains. This paper considers the case where the neuron adaptation to dynamic environment. Performing numerical exhibits the super-stable periodic spike-trains and analyzes experiments for basic artificial problems, the efficiency of steady/transient states. Deriving a one-dimensional map of the iPSOR is confirmed. spike phases, the circuit dynamics can be analyzed precisely. Keywords: PSO, MPPT Analysis of the circuit is important not only as the basic study of nonlinear dynamical systems, but also for engineering applications. £ Keywords: Spiking neurons, bifurcation ¢B2L-C-2 ¡Particle Swarm Optimization for Calculating Local Bifurcation Point in One-Dimensional Discrete Dynamical Systems £ Yusho Tomimura (Faculty of Engineering, Oita Univer- sity), Hiroaki Kurokawa (School of Engineering, Tokyo ¢B2L-B-5 ¡Influence of Reference Courses on Reinforce- ment Learning to Search Ships’ Courses University of Technology), Haruna Matsushita (Faculty of Takeshi Kamio (Hiroshima City University), Takahiro Engineering, Kagawa University), Takuji Kousaka (Faculty Tanaka (Japan Coast Guard Academy), Kunihiko Mitsub- of Engineering, Oita University) ⇒ ori (Takushoku University), Hisato Fujisaka (Hiroshima City Proc. pp. 498–501, [Paper ID: 5087] University) In this paper, we propose the local bifurcation point ⇒ Proc. pp. 490–493, [Paper ID: 5147] derivation method of one-dimensional discrete dynamical Deciding efficient and safe courses of ships before actual systems using particle swarm optimization (PSO). First, navigation is very important. We have developed multi-agent we describe the algorithm of PSO, which is one of the reinforcement learning system (MARLS) to search ships’ optimization methods. Next, we define the equation of the Ecourses as a useful tool to discuss the optimality of courses one-dimensional discrete dynamical system and show the and the interaction between maneuvering actions. In this local branch point derivation method in that system. After paper, we design a novel MARLS to search ships’ courses that, we apply the proposed method to the Circle map which based on the reference courses. Also, we evaluate the influ- is a one-dimensional discrete map. Finally, we consider the ff ence of the reference courses on MARLS through the numer- e ectiveness of the proposed method using the application ical simulations. result. Keywords: Multi-agent system, Reinforcement earning in Keywords: Particle Swarm Optimization, Local Bifurcation grid space, Multi-ship course problem Point, One-dimensional Discrete Dynamical Systems

£ ¢B2L-C-3 ¡ Circuit Implementation and Bifurcation Analysis of a Piecewise-Rotational Chaotic System for B2L-C Optimization Algorithms with Solving Optimization Problems Haru Hikita (Nagaoka University of Technology), Nonlinear Dynamics 1 Yoshikazu Yamanaka (Utsunomiya University), Tadashi Tsubone (Nagaoka University of Technology) / / DATE: 2017 12 6 13:55–15:35 ⇒ Proc. pp. 502–505, [Paper ID: 5100] ROOM: Room 3 Chairs: Hidehiro Nakano (Tokyo City University) and In this study, we consider a Piecewise-Rotational Chaotic Kenya Jin’no (Nippon Institute of Technology) system(PRC) which is a simple nonlinear discrete-time £ system and exhibits chaos. The system is basis of an ¢B2L-C-1 ¡Evolutionary Computation Based Dynamic optimization method named an Optimizer based on Maximum Power Point Tracking Piecewise-Rotational Chaotic system(OPRC) in our pre-

48 vious researches. The previous study has indicated that of the proposed method by numerical simulation. ﬀ the system behavior a ects search performance. In this Keywords: Particle Swarm optimization, Swarm Intelli- paper, as basis of this consideration, we analyze bifurcation gence, dropout of the system. As result, we provide a bifurcation set of the system. In addition, PRC circuit realization on Field Programmable Analog Array which is a programmable analog IC is proposed. We conﬁrm PRC circuit exhibits chaotic attractors that qualitatively accords with results of simulation. The result suggests the possibility of realizing B2L-D Nonlinear Circuits Distributed OPRCs on chip. Keywords: optimization problem, chaos, bifurcation, and Coupled across Nontrivial Network population-based optimization method Topologies 1

DATE: 2017/12/6 13:55–15:35 £ ROOM: Room 4 ¢B2L-C-4 ¡A Study of PCMPSO Chairs: Yoko Uwate (Tokushima University) and Tadashi Kenya Jin’no (Nippon Institute of Technology), Yosuke Tsubone (Nagaoka University of Technology) Hariya (Nihon Dengi), Takuya Shindo (Nippon Institute of £ Technology) ¢B2L-D-1 ¡Minimal Coupling Strength Inducing Am- ⇒ Proc. pp. 506–509, [Paper ID: 5137] plitude Death in Stuart-Landau Oscillators Coupled by The search performance of the original particle swarm Delayed Connections optimization is depended on the coordinate system of the Takahiro Kouda (Osaka Prefecture University), Hakui Teki evaluation function. Namely, the original PSO does not (Osaka Prefecture University), Yoshiki Sugitani (Ibaraki have a rotationally invariant. To overcome this problem, University), Keiji Konishi (Osaka Prefecture University), various versions of the improved PSO are proposed. These Naoyuki Hara (Osaka Prefecture University) ⇒ algorithms have a rotationally invariant, however, these Proc. pp. 514–517, [Paper ID: 5124] algorithm does not have an excellent search performance. Synchronization and amplitude death have been experimen- In this article, we propose a new PSO algorithm which tally observed in coupled thermoacoustic oscillators [Biwa has a rotationally invariant and has an improved search et al., Phys. Rev. Applied, 2015]. The present paper shows performance. that behavior of the coupled thermoacoustic oscillators Keywords: Optimization, PSO can be quantitatively described by coupled Stuart-Landau oscillators. With an aim to easily induce amplitude death in coupled thermoacoustic oscillators, we investigate the £ coupling conﬁguration and coupling strength that induce ¢B2L-C-5 ¡Study of Si Algorithm That Individual to amplitude death in the coupled Stuart-Landau oscillators. Dropout Keywords: Amplitude death, Coupled oscillators, Ther- Takuya Shindo (NIppon Institute of Technology), Kenya moacoustic phenomena, Stuart-Landau oscillators Jin’no (Nippon Institute of Technology) ⇒ Proc. pp. 510–513, [Paper ID: 5120]

A swarm of creatures such as birds, fish and ants may £ behave like having intelligence. The intelligence found in ¢B2L-D-2 ¡Fault Tolerance of Boost Converters Coupled the behavior of such swarm is called swarm intelligence by WTA Switching (SI). Many of the optimization algorithms such as Particle Kaito Ando (Hosei University), Toshimichi Saito (HOSEI Swarm Optimization (PSO) and Ant Colony Optimization University) ⇒ (ACO) using SI are inspired by the behavior of actual swarm Proc. pp. 518–521, [Paper ID: 5078] of organisms. In the framework of optimization, SI is This paper studies basic dynamics of a coupled system of thought to be closely related to evolutionary computation, boost converters. The converters are coupled by current- neural networks, and the like. Therefore, we consider using threshold and Winner-Take-All(WTA) switching rules. dropout as one of the neural network methods for individ- The WTA switching rule is effective to reinforce the fault uals in the swarm of PSO. PSO has a network structure to tolerance. This switching rule can realize multi-phase exchange information with each other among individuals. synchronization automatically. It is suitable for current The optimal solution search performance change by this sharing and ripple reduction. Simplifying the system into network topology has been investigated and reported. The a piecewise linear model, stability of the synchronization network structure is also considered to be an important phenomena and fault tolerance can be analyzed precisely. factor in dropout. Therefore, in this paper, we investigate the Keywords: Buck converter, WTA switching, Fault tolerance performance change due to the network structure of PSO in using dropout. In addition, we confirmed the performance

49 £ analytical results are conﬁrmed through some numerical ¢B2L-D-3 ¡Synchronization Phenomena due to Changes simulations. in Network Structure of Coupled Chaotic Circuits in Keywords: Amplitude death, Ginzburg-Landau model, Complex Networks Reaction-diﬀusion model, Delay connection Shuhei Hashimoto (Tokushima University), Takahiro Chikazawa (Tokushima University), Yoko Uwate (Tokushima University), Yoshifumi Nishio (Tokushima University) ⇒ Proc. pp. 522–525, [Paper ID: 5091]

Complex networks of real world have characters like scale B2L-E Radio and Optical Wireless free property, cluster property, small world property. So, Communications 2 we use degree distribution models based on the power law and the normal distribution. Scale free network follows the DATE: 2017/12/6 13:55–15:35 power law. Random network follows the normal distribution. ROOM: Room 5 Especially, scale free network has hub nodes which have Chairs: Yeon Ho Chung (Pukyong National University) and many edges. We compare synchronization rate of network Kazuki Maruta (Chiba University) based on three types of degree distribution by changing the coupling strength. And we investigate synchronization £ phenomena between each connection of networks. ¢B2L-E-1 ¡Stochastic Quantization of a One-Dimensional Multi-Particle System for the Circuit Simulator Model of Keywords: Chaos, Complex Networks, Synchronization, Photoelectric Terahertz Wave Detectors Degree Distribution Ibuki Nakamura (Hiroshima City University), Keita Mat- suura (Hiroshima City University), Hisato Fujisaka (Hi- roshima City University), Masaru Fukushima (Hiroshima £ City University), Takeshi Kamio (Hiroshima City Univer- B2L-D-4 Amplitude Reduction of Piecewise-Constant ¢ ¡ sity) Oscillators Coupled by Hysteresis Elements ⇒ Proc. pp. 534–537, [Paper ID: 5075] Xuan Tue Dinh (Nagaoka University of Technology), Tadashi Tsubone (Nagaoka University of Technology) A device which detects terahertz (THz) electromagnetic ⇒ Proc. pp. 526–529, [Paper ID: 5200] waves with smaller in photon energy than visible lights and outputs a single photoelectron has been developed. Employ- In this study, we consider two piecewise-constant oscillators ing the devices as THz detectors might provide high sensi- coupled by hysteresis elements. The single oscillator tivity to sensing and communication systems. The authors presents only a stable limit cycle, but the coupled system ex- has proposed a receiver consisting of three blocks. They are hibits some nonlinear phenomena such as synchronization, the detector, a frequency discriminator separating the photo- chaotic motion and so on. We focus on amplitude reduction electrons depending on their momentum, a single-electron- phenomena. We analyze the parameter conditions where transistor-based decoder estimating transmitted data from the amplitude reduction phenomena can be observed, and the streams of the separated photoelectrons. The circuit simula- typical phenomena are conﬁrmed in laboratory. tor models of the blocks are necessary to aid the design of Keywords: Amplitude reduction phenomena, Piecewise- the receiver. As a basis of the model of the detector, a one- constant oscillator, Hysteresis elements, Limit cycle dimensional multi-particle quantum system is modeled after a classical probabilistic system composed of the Brownian particles in this paper. We conﬁrmed by the numerical exper- £ iments of the established model that the Brownian particles ¢B2L-D-5 ¡ Amplitude Death in a Pair of Two- moves probabilistically according to the existence probabil- Dimensional Complex Ginzburg-Landau Systems ity derived from the wave function of the original quantum Coupled by Delay Connections system. Hakui Teki (Osaka Prefecture University), Keiji Konishi Keywords: THz detector, Stochastic quantization, Multi- (Osaka Prefecture University), Naoyuki Hara (Osaka Pre- particle Quantum system fecture University) ⇒ Proc. pp. 530–533, [Paper ID: 5121]

This paper deals with amplitude death in a pair of two- £ dimensional complex Ginzburg-Landau (CGL) systems ¢B2L-E-2 ¡Iterative Equalization Based on Estimated coupled by delay connections. A linear stability analysis Variance and Threshold for Massive MIMO with Spatial provides a suﬃcient condition for the existence of amplitude Modulation death for a no-delay connection. A systematic procedure Naoya Murokawa (Yamaguchi University), Yuta Ida (Yam- for designing connection parameters for a delay-connection, aguchi University), Takahiro Matsumoto (Yamaguchi Uni- which can induce amplitude death, is presented. These versity), Shinya Matsufuji (Yamaguchi University) ⇒ Proc. pp. 538–541, [Paper ID: 5112]

50 firmed that the quantum system with a stub-structured poten- In recent years, next generation data communications called tial functions as a frequency discriminator. fifth generation (5G) is studied. To achieve this demand, massive multiple-input multiple-output (MIMO) systems are Keywords: stochastic quantization, electron wave, stub fil- considered. In general, the MIMO transmissions are consid- ter ered based on a space division multiplexing (SDM). How- ever, SDM may include the interference between the signals from the different transmit antenna in the receive antenna. To £ solve this problem, spatial modulation (SM) has been pro- ¢B2L-E-5 ¡Uplink Multiuser VLC-OFDM-IDMA System posed, but its performance is degraded when the detection with Successive Interference Cancellation error is occurred. Therefore, in this paper, we propose the it- Asato Kurihara (Chiba University), Chang-Jun Ahn (Chiba erative equalization based on the estimated variance and the University), Yeon-Ho Chung (Pukyong National University) ⇒ threshold for massive MIMO systems with a SM. Proc. pp. 550–553, [Paper ID: 5110] Keywords: MIMO, Spatial Modulation, Iterative Equaliza- In this paper, we propose VLC-OFDM-IDMA with SIC tion (Successive Interference Cancellation). In the proposed system, the BER performance is expected to be improved since MAI is minimized by using SIC in each estimation stage. £ The simulation results show that the proposed system can of- ¢B2L-E-3 ¡Majority Determination and Subcarrier Di- fer the performance improvement about 0.8 dB compared to versity of Detecting Broadcaster Advised Emergency the conventional VLC-OFDM-IDMA with PIC. Moreover, it Wake-Up Signal for ISDB-T Television Receivers is clear that the BER performance of the proposed system for Satoshi Takahashi (Hiroshima City University) 4 users is approximately the same as that of single user. ⇒ Proc. pp. 542–545, [Paper ID: 5159] Keywords: VLC, OFDM, IDMA, PIC In an emergency, broadcaster would send a special signal to wake up their idle receivers. In ISDB-T (Integrated Ser- vices Digital Broadcasting-Terrestrial) digital television, the emergency wake-up signal is sent on one of the control signals. As the control signal is sent over several subcarriers that contain the same information, the subcarrier diversity is C0L-A Nonlinear waves and localiza- possible for reliably determining the signal. In this paper, tions 2 the performance of determining the wake-up signal with the subcarrier frequency diversity is presented. Then, the per- DATE: 2017/12/6 15:50–17:10 formance of determining the wake-up signal is presented by ROOM: Room 1 misdetections and false alarms. Chair: Masayuki Kimura (Kyoto University) Keywords: digital television, signal detection, wake-up ra- £ dio, diversity, ISDB-T ¢C0L-A-1 ¡Supersonic N-Crowdions in 2D Morse Lattice Sergey Dmitriev (Institute for Metals Superplacticity Prob- lems, Russian Academy of Sciences), Nikolay Medvedev £ (Biysk Technological Institute, 27 Trofimova St., 659305 ¢B2L-E-4 ¡A Numerical Model of a Frequency Discrim- Biysk, Russia), Elena Korznikova (Institute for Metals inator for Terahertz Sensing and Communication Using Superplacticity Problems, Russian Academy of Sciences), Photoelectric Detectors Alexander Chetverikov (Saratov Chernyshevsky State Uni- Shota Hayakawa (Hiroshima City University), Hisato Fu- versity, 83 Astrakhanskaya St., 410012 Saratov, Russia), jisaka (Hiroshima City University), Takeshi Kamio (Hi- Manuel Velarde (Instituto Pluridisciplinar, UCM, Paseo Juan roshima City University) XXIII 1, 28040 Madrid, Spain) ⇒ Proc. pp. 546–549, [Paper ID: 5074] ⇒ Proc. pp. 554–557, [Paper ID: 5096]

A quantum system with a stub-structured potential is con- Crowdion is a point defect in metals in the form of an in- sidered to be usable as a frequency discriminator of terahertz terstitial atom in a close-packed atomic row. When moving, wave receiver system. In this quantum system, the electron crowdion transports one atom. In this work the condition of wave is reflected or transmitted near the connection area of self-focusing collisions in a chain of rigid balls [1] is trans- the stub depending on the momentum of the electron wave. formed into the condition for deformable atoms. According In this study, by numerical analysis of the propagation of the to this condition, collision velocity must not exceed the value electron wave using the difference method, we analyzed the when the minimal distance between atom centers during col- change of reflection and transmission characteristics with re- lision does not become less than a half of the equilibrium spect to the momentum of the electron wave. In addition, we atomic radius in the crystal. One can increase initial energy calculated the sample trajectories of electrons by stochastic of crowdion by giving initial velocity to n neighboring atoms quantization on which circuit simulator model of terahertz in the row not exceeding the critical defocusing value. It wave receiver system is based. By the analysis, we have con- is demonstrated that n-crowdions are much more efficient in

51 mass transfer in 2D and 3D Morse crystals. Keywords: molecular dynamics, crowdion, defects, mass transfer, self focusing movement C0L-B Cellular Dynamical Systems 2 £ ¢C0L-A-2 ¡Numerical Simulation of Nonlinear Vibration DATE: 2017/12/6 15:50–17:10 Modes in a Small Number Atomic System ROOM: Room 2 Yusuke Doi (Osaka University), Kazuhiro Okamoto (Osaka Chair: Hiroyuki Torikai (Kyoto Sangyo University) University), Akihiro Nakatani (Osaka University) £ ⇒ Proc. p. 558, [Paper ID: 5199] ¢C0L-B-1 ¡A Complex-Valued Reinforcement Learning In this study, we investigate nonlinear vibration modes of Algorithm Using Complex-Valued Neural Networks an atomic system which consists of six particles. The non- Masaki Mochida (Tokyo City University), Hidehiro Nakano linear vibration modes are continued from phonon modes of (Tokyo City University), Arata Miyauchi (Tokyo City Uni- the system. Relation between frequencies and amplitude are versity) discussed. Linear stability of the nonlinear vibration modes ⇒ Proc. pp. 564–567, [Paper ID: 5065] is also analyzed. It is found that, in some range of initial In Complex-valued Reinforcement Learning (CRL), each amplitude, energy exchange is observed between a few vi- action-value is represented by a complex value. Then, search bration modes. history can be naturally included in the argument, while Keywords: Nonlinear Vibration Mode, Stability dominance relationships are decided by the amplitude. CRL is eﬀective for the environments with perceptual aliasing. In order to apply larger-problems with the large number of £ states, this paper introduces the function approximation for ¢C0L-A-3 ¡ Numerical Study on Intrinsic Localized the action-value function by using complex-valued neural Modes in Carbon Nanotubes with Bending and Torsion networks. The simulation results for a benchmark problem Guanghui Sun (Osaka University), Yusuke Doi (Osaka Uni- are shown. versity), Akihiro Nakatani (Osaka University) Keywords: Reinforcement Learning, Neural Networks ⇒ Proc. p. 559, [Paper ID: 5201]

In this paper, structures and dynamics of Intrinsic Localized Modes (ILMs) in carbon nanotubes (CNTs) are investigated £ by molecular dynamics (MD) simulation. Systematic study ¢C0L-B-2 ¡Consideration on Quantization Functions in of structures of ILM with various deformations such as bend- Quantized Neural Networks ing, torsion, and tensile deformation is performed. More- Takumi Kadokura (Tokyo City University), Hidehiro over, lifetime of ILMs is astimated by numerical results of Nakano (Tokyo City University), Arata Miyauchi (Tokyo MD simulation. City University) ⇒ Keywords: Intrinsic Localized Modes, carbon nanotube Proc. pp. 568–571, [Paper ID: 5062] Quantized Neural Network (QNN) is a kind of neural networks in which its weights and activations are quantized. £ Since QNN can reduce computational quantity and energy ¢C0L-A-4 ¡Localized Modes in a One-Dimensional Res- consumption by quantization, it is expected to be used on em- onant Circuit Array Consisting of Overlapped Square bedded devices. This paper investigates quantization func- Coils tions used for quantizing gradients in QNN. By performing Takuya Fujimoto (Kyoto University), Masayuki Kimura the numerical experiments, the performances of some quan- (Kyoto University), Shinji Doi (Kyoto University) tization functions are compared. We then show that there ⇒ Proc. pp. 560–563, [Paper ID: 5179] exists a quantization function which can keep high perfor- Localized mode in a one-dimensional resonant circuit array mance with low quantization bit rate. is investigated. Circuit equation and dispersion relation in a Keywords: Neural Networks, Learning resonant circuit array are derived. we show the meaning of matrix elements by comparing with coupling oscillator. Key characteristic of resonant circuit array is that no coupling ex- £ ists by overlapping resonant coils. It is revealed localized ¢C0L-B-3 ¡Cellular Automaton Based Pixel Level Snakes mode has high frequency and localization is great with this Using Active Contour Curvature overlap. Tomohiro Fujita (Ritsumeikan University), Sho Sawada Keywords: Wireless power transfer, localized mode, reso- (Ritsumeikan University), Koki Kishimoto (Ritsumeikan nant circuit array University), Takeshi Kumaki (Ritsumeikan University), Takeshi Ogura (Ritsumeikan University) ⇒ Proc. pp. 572–575, [Paper ID: 5141]

52 clariﬁed how dynamics of particles contribute to solving One of image segmentation methods, snake algorithm is re- performances for the non-separable problems. Herein alized using Cellular Automaton (CA). In this study, we pro- we suggest an eﬀectiveness of dynamics of particles to pose CA based Pixel Level Snakes (PLS) which utilizes cur- solve non-separable problems, in order to enhance global vature of active contour. For the calculation of curvature, the search ability for non-separable problems, introducing a local curvature counting algorithm is used. This algorithm is neighborhood topology between particles to PPSO. We based on CA, and therefore this method can be easily imple- 2 compare the solving performances of PPSO with those of mented CA dedicated hardware, CAM . The experimental other deterministic PSO methods, and classic PSO in the result shows that our proposed method can obtain equal or numerical simulations. better performance than the previous one. Keywords: Metaheuristics, Particle swarm optimizer, Keywords: Cellular Automata, Content Addressable Mem- Locally-Coupled Topology, Piecewise-Linear System ory, Snake Algorithm

£ ¢C0L-C-3 ¡A Co-Evolutional Particle Swarm Optimizer with Dynamic Re-Grouping Schemes Ryosuke Kikkawa (Tokyo City University), Hidehiro C0L-C Optimization Algorithms with Nakano (Tokyo City University), Arata Miyauchi (Tokyo City University) Nonlinear Dynamics 2 ⇒ Proc. pp. 584–587, [Paper ID: 5063]

DATE: 2017/12/6 15:50–17:10 Particle Swarm Optimizer (PSO) is a kind of metaheuristic ROOM: Room 3 algorithms for solving optimization problems with con- Chairs: Hidehiro Nakano (Tokyo City University) and tinuous objective functions. PSO can be executed based Kenya Jin’no (Nippon Institute of Technology) on the simple dynamics of search particles. For solving £ high-dimensional optimization problems with the large ¢C0L-C-1 ¡K-Means Clustering with Modifying Firefly number of design variables, Cooperative Particle Swarm Algorithm Optimizer (CPSO) has been proposed. In CPSO, each Masaki Takeuchi (Tokushima University), Thomas Ott sub-swarm searches partial solutions in each sub-space (Zurich University of Applied Sciences), Haruna Matsushita given by the division of search space. Integrating the partial (Kagawa University), Yoko Uwate (Tokushima University), solutions, CPSO can obtain solution candidates for the Yoshifumi Nishio (Tokushima University) optimization problems. This paper proposes dynamical ⇒ Proc. pp. 576–579, [Paper ID: 5089] and deterministic grouping methods for the sub-swarms in CPSO. In the simulation experiments, the results for some Senthilnath et al. [1] proposed an algorithm that used the benchmark problems are shown. firefly algorithm for K-means clustering (KMFA). In this Keywords: Particle Swarm Optimization, Evolutionary paper, we propose a new clustering algorithm that com- Computation bines K-means clustering and improved firefly algorithm (KMIFA). In our proposed algorithm, at the beginning of the search, all fireflies move with a relatively strong random £ influence. As the number of iterations increases, the firefly C0L-C-4 A Study on Two-Level Infeasible Solution tends to converge. These experiments indicate that our ¢ ¡ Repair for Evolutionary Multi-Objective Set Packing algorithm is more efficient than the other algorithms. Optimization Keywords: Clustering, Firefly Algorithm, Optimization, Mariko Tanaka (The University of Electro- K-means algorithm Communications), Yuki Yamagishi (NS Solutions Cor- poration), Hidetoshi Nagai (NS Solutions Corporation), Hiroyuki Sato (The University of Electro-Communications) £ ⇒ Proc. pp. 588–591, [Paper ID: 5081] ¢C0L-C-2 ¡ A Piecewise-Linear Particle Swarm Opti- mizer with Locally-Coupled Topology This work proposes a repair method of infeasible solutions Tomoyuki Sasaki (Shonan Institute of Technology), Hide- in evolutionary multi-objective set packing optimization. hiro Nakano (Tokyo City University) The multi-objective set packing problems have two kinds ⇒ Proc. pp. 580–583, [Paper ID: 5101] of constraints: upper and lower limit constraints. Infeasible solutions not satisfying any of their constraints cause We proposed a deterministic particle swarm optimizer, an inefficient solution search. To efficiently optimize called piecewise-linear particle swarm optimizer (PPSO). multi-objective set packing problems by using evolutionary In PPSO, each particle has two search modes which are a algorithms, in this work we repair infeasible solutions in convergence mode and a divergence mode, and switches two-levels by sequentially considering upper and lower ff both search modes irregularly. PPSO is e ective to limit constraints. Experimental results on four test problems solve non-separable problems, however, it has not been

53 show that the proposed two-level infeasible solution repair in the coupled oscillators even if the above conditions are not method enhances evolutionary multi-objective set packing satisﬁed. The analytical results are conﬁrmed by numerical optimization. simulations. Keywords: Multi-objective set packing problems, Evolu- Keywords: Partial amplitude death, delayed coupled oscil- tionary algorithms, Constraint-handling, Infeasible solution lators repair

£ ¢C0L-D-3 ¡ Modeling of Competitive Networks Using Coupled Chaotic Circuits Yoko Uwate (Tokushima University), Yoshifumi Nishio C0L-D Nonlinear Circuits Distributed (Tokushima University) ⇒ Proc. pp. 600–603, [Paper ID: 5117] and Coupled across Nontrivial Network Recently, synchronization in complex networks with differ- Topologies 2 ent types of interactions has been extensively investigated for understanding important role played by the interac- DATE: 2017/12/6 15:50–17:10 tions. This is because interactions in networks leads to the ROOM: Room 4 emergence of key synchronization phenomena, especially Chairs: Yoko Uwate (Tokushima University) and Tadashi competitive coupling can be observed in real world net- Tsubone (Nagaoka University of Technology) works.However, a node in a complex network is expressed £ by a mathematical model in most studies of synchroniza- ¢C0L-D-1 ¡Analysis of Bifurcation Phenomena of Cou- tion of complex networks with competitive interactions. pled Piecewise-Constant Hysteresis Oscillators Although, it is very important to use mathematical model Tri Quoc Truong (Nagaoka University of Technology), for complex networks in order to understand the synchro- Tadashi Tsubone (Nagaoka University of Technology), nization states by approaching theoretical methods, we also Naohiko Inaba (Meiji University) need to consider physical models for future engineering ⇒ Proc. pp. 592–595, [Paper ID: 5088] applications. In this study, we focus on synchronization state observed in two networks of chaotic circuits which are This study analyzes the quasiperiodic bifurcation phenom- coupled in one direction hierarchically. We analyze the role ena of two-coupled piecewise-constant hysteresis oscillator of synchronization by changing the competitive coupling driven by a rectangular wave force and three-coupled strategies. piecewise-constant hysteresis oscillator. These oscillators Keywords: synchronization, competitive networks can generate three-dimensional tori. By using a generalized calculation algorithm for deriving Jacobian matrices in piecewise-constant hysteresis systems, we conduct two- £ parameter Lyapunov diagrams for both non-autonomous C0L-D-4 Generalized Multi-Synchronization of two-dimensional system and autonomous three-dimensional ¢ ¡ Chaotic Systems via Dynamical Control Laws: Stability system. According to the numerical results, Arnol’d reso- of Synchronization Manifold nance web and the hysteresis phenomenon is observed. The Christopher Diego Cruz-Ancona (CINVESTAV-IPN), hysteresis distorts the Chenciner bubbles in non-autonomous Rafael Martinez-Guerra (CINVESTAV-IPN), Claudia Ale- two-dimensional system, however, we cannot observe such jandra Perez-Pinacho (CINVESTAAV-IPN) phenomenon in the autonomous three-dimensional system. ⇒ Proc. pp. 604–607, [Paper ID: 5108] Keywords: Arnol’d resonance web, Chenciner bubble, quasiperiodic, piecewise-constant hysteresis oscillator, Within a differential algebraic framework, this paper studies Lyapunov analysis the synchronization phenomena for networks of strictly different nonlinear chaotic systems, i.e., generalized multisynchronization (GMS). In this case, by allowing any type £ of interplay between slave systems in a master multi-slave ¢C0L-D-2 ¡Stability Analysis of Partial Amplitude Death topology, a dynamical control law with diffusive coupling on Five Delay-Coupled Stuart-Landau Oscillators terms is designed for each slave system to synchronize the Yoshiki Sugitani (Ibaraki University) whole network. Moreover, with the premise that differential ⇒ Proc. pp. 596–599, [Paper ID: 5168] algebraic techniques allows us to completely characterize its synchronization manifold, we present some preliminary The present study investigates partial amplitude death on results on stability of synchronization manifolds. Finally, five delay-coupled Stuart-Landau oscillators. It was known the effectiveness of the approach is shown in numerical that partial amplitude death occurs in coupled oscillators simulations. ff if the oscillators have di erent frequency each other or are Keywords: Generalized multisynchronization, Canonical stabilized at steady state before coupling. The linear stability Forms, Dynamical controllers, Algebraic synchronization analysis reveals that we can induce partial amplitude death

54 manifold £ ¢C0L-E-3 ¡Optical Interference Noise Filtering Over Vis- ible Light Communication System Utilizing Analog High- Pass Filter Circuit Trio Adiono (Microelectronics Center, Institut Teknologi Bandung), Syifaul Fuada (School of Electrical Engineering and Informatics, Institut Teknologi Bandung) C0L-E Radio and Optical Wireless ⇒ Proc. pp. 616–619, [Paper ID: 5153]

Communications 3 One of the weaknesses of the Visible Light Communication (VLC) system is its susceptibility towards noise interference DATE: 2017/12/6 15:50–17:10 which comes from indoor/artificial intelligence lamp such as ROOM: Room 5 modern fluorescent and incandescent lamp. Besides that, it Chairs: Yeon Ho Chung (Pukyong National University) and is also susceptible to ambient light of sunlight, flashlight, Kazuki Maruta (Chiba University) LED lamp, or handphone screen light as DC interferences. £ In this paper, we use a low-cost analog filter to reduce static ¢C0L-E-1 ¡Non-Linear Compensation for Cap64 Modu- interference noise from incandescent and fluorescent light. lation in Visible Light Communication System To reduce ambient light, we use manually configurable ana- Nan Chi (Fudan University), Xingyu Lu (Fudan University), log DC-offset adjuster. According to the experiment result, Liang Qiao (Fudan University), Yingjun Zhou (Fudan Uni- the design is able to perform well in reducing these noise versity), Can Wang (Fudan University) sources. ⇒ Proc. pp. 608–611, [Paper ID: 5202] Keywords: Visible Light Communication, analog filter, ambient light noise, optical interference noise Signal distortion caused by non-linearity can affect the performance of Visible light communication (VLC) system. In this paper, we use the Volterra Filter Model to construct a £ nonlinear channel model and study CAP modulation. We ¢C0L-E-4 ¡Angle of Light Arrival Estimation for Non- ff also study and analysis the e ect of linear equalization based Line-of-Sight Optical Camera Communications on modified cascaded multi-modulus algorithm (M-CMMA) Tahesin Samira Delwar (Pukyong National University), ff and the e ect of non-linear equalization based on Volterra Willy Anugrah Cahyadi (Pukyong National University), series. Yeon Ho Chung (Pukyong National University), Chang-Jun Keywords: Visible Light Communication, carrier-less am- Ahn (Chiba University) plitude and phase modulation, linear equalizer, nonlinear ⇒ Proc. pp. 620–623, [Paper ID: 5144] equalizer This paper presents a new formula for the AOA that can be useful to design an efficient non-line-of-sight OCC. Unlike £ the conventional formula having double dependency of dis- ¢C0L-E-2 ¡Investigation of Optical Interference Noise tance and displacement, the proposed formula is contingent Characteristics in Visible Light Communication System upon the received illuminance only. To verify the proposed Trio Adiono (Microelectronics Center, Institut Teknologi formula, the AOAs for three different light paths are mea- Bandung), Syifaul Fuada (School of Electrical Engineering sured on a reference surface located near to the receiver. It and Informatics, Institut Teknologi Bandung) is found that the measured AOAs from the proposed formula ⇒ Proc. pp. 612–615, [Paper ID: 5098] show good agreement with the conventional formula. Keywords: Angle of arrival, Non-line-of-sight, Optical One of the weaknesses of the Visible Light Communication camera communication, visible light communication (VLC) system is its susceptibility towards noise interference which comes from indoor/artificial intelligence lamp such as modern fluorescent and incandescent lamp. Besides that, it is also susceptible to ambient light of sunlight, flashlight, LED lamp, or handphone screen light as DC interferences. In this paper, we use a low-cost analog filter to reduce static interference noise from incandescent and fluorescent light. C1L-A Plenary Talk 3 To reduce ambient light, we use manually configurable analog DC-offset adjuster. According to the experiment result, DATE: 2017/12/7 8:30–9:30 the design is able to perform well in reducing these noise ROOM: Room 2&A sources. Chair: Hisato Fujisaka (Hiroshima City University) Keywords: VLC, optical interference noise, ambient light, £ incandescent, fluorescent ¢C1L-A-1 ¡ Ultrashort-Pulse Trains in Optical Res- onators: A Case of Spontaneous Synchronization? Kurt A. Wiesenfeld (Georgia Institute of Technology)

55 (Kyoto Sangyo University), Hiroyuki Torikai (Kyoto Sangyo Engineered generation of extremely short (e.g. femtosec- University) ond) optical pulses is of great practical interest. Applications ⇒ Proc. p. 628, [Paper ID: 5172] range from optical communications to micro-machining and medical imaging. In fact, in the early years of laser sci- An electronic circuit model of neural system based on a hy- ence, spontaneous pulsing was often observed, but was brid dynamical system is presented. viewed as an unfortunate obstacle to the primary goal at the Keywords: Hybrid Dynamical System time, namely the development of constant intensity sources. Though an old phenomenon, a fundamental understanding of when and why these pulsed states emerge is still lacking. I’ll £ discuss recent theoretical work which formulates the sponta- ¢C2L-A-3 ¡Global bifurcation analysis of a simple piece- neous emergence of periodic pulses in optical resonators as a wise linear non-autonomous dynamical system type of oscillator synchronization. This view leads to a novel Yuu Miino (Tokushima University), Tetsushi Ueta “Kuramoto-like” phase model involving ternary rather than (Tokushima University), Hiroshi Kawakami (Tokushima binary interactions among the cavity modes. The ternary University) model shows interesting behavior making it worthy of study ⇒ Proc. pp. 629–632, [Paper ID: 5090] in its own right, quite aside from its relevance to frequency comb generation. Piecewise linear dynamical systems (PWL systems) often Keywords: synchronization, lasers, microresonator, fre- show complex behaviors. If the systems have been analyzed quency comb, Kuramoto enough, we are able to consider how strong the nonlinearity is needed for observing nonlinear phenomena. However, many researches have not analyzed their exhibiting cause. On the other hand, the methods of analysis for the hybrid systems are recently well done. Since the PWL system is a kind of the hybrid systems, such proposed methods are natu- C2L-A Switched Dynamical Systems: rally applied to the PWL systems. In this study, we construct a simple PWL system and try to make it linear as possible Modeling, Analysis, and Applications under exhibiting the nonlinear phenomena. Keywords: global bifurcation analysis, piecewise linear, DATE: 2017/12/7 13:35–15:55 Duffing equation ROOM: Room 1 Chairs: Mio Kobayashi (National Institute of Technology, Anan College) and Takuji Kousaka (Oita University) £ £ ¢C2L-A-4 ¡Acoustic Effect Using Chaos Controlled by an ¢C2L-A-1 ¡Behavioral Modeling of Switched Descriptor External Signal System via Backward Euler Method Hironori Kumeno (National institute of technology, Niihama Tomoya Nishimura (Kagawa University), Yuichi Tanji (Ka- college) gawa University) ⇒ Proc. pp. 633–636, [Paper ID: 5103] ⇒ Proc. pp. 624–627, [Paper ID: 5194] In this study, a system which apply chaotic fluctuation to im- Using descriptor system, we can express various phenom- provement of sounds is proposed. Fluctuation of chaos has ena accurately. The system is composed of memoryless and possibility to append natural nuance to electric sounds and memory parts. Weierstrass canonical form is general for an to generate good electric sounds imitate sounds of nature. expression of descriptor system. However, we need many To implement the system, bifurcations of chaos circuit gen- ff computational e orts to obtain this expression. In this paper, erating chaotic fluctuation are investigated. Additionally, in we propose a new behavioral modeling of switched descrip- circuit experimentation, chaotically fluctuated output sounds / tor system which gives the transient steady state behavior. As are observed when sound signals are input to the system. an illustrative example, this modeling is applied to Class-E amplifier which is a resonant power amplifier. The behavior Keywords: Chaos, Switched Dyanamical System, Acoustic obtained from the proposed method is identical to modeling application by Weierstrass canonical form. Here, the proposed method has a merit to take an arbitrary input waveform, compared with modeling by Weierstrass canonical form. £ ¢C2L-A-5 ¡Experimental Study on Vibration Character- Keywords: Descriptor System, Power Electronics istics in Vibration Cutting Process Shu Karube (National Institute of Technology, Oita College) ⇒ Proc. p. 637, [Paper ID: 5198] £ ¢C2L-A-2 ¡Design of Electronic Circuit Model of Neural Vibration cutting is an effective processing method to cut System Based on Hybrid Dynamical System hard materials. In order to obtain the effect of the vibration Kentaro Takeda (Kyoto Sangyo University), Chiaki Matsuda

56 cutting, the cutting speed must set lower than the velocity pled oscillators. The existence of chimera states is shown, in of the tool edge, theoretically. However, the actual vibration which some part of oscillators in the network exhibits syn- cutting device often suﬀers from decline in accuracy caused chronous oscillations, while all other oscillators remain asyn- by the non-linear vibration. The purpose of this paper is chronous. evaluation of the vibration cutting state by using power spec- Keywords: Chimera States, Network of Coupled Oscilla- trum analysis. We focus on natural frequency of workpiece tors, Time-Delay Systems support system, and show the power level of the natural frequency is useful for vibration cutting state prediction. Keywords: Vibration cutting, Switched dynamical system, £ Chatter vibration, Monitoring, Power spectrum ¢C2L-B-2 ¡Network Analysis of Epileptic Brain Alexander Hramov (Saratov State Technical Univer- sity), Vladimir Maksimen (Saratov State Technical Univer- £ sity), Annika Luttjohann (University of Munster), Vladimir ¢C2L-A-6 ¡Control of Chaotic Itinerancy Observed in Makarov (Saratov State Technical University), Mikhail Coupled Systems of One-Dimensional Gauss Maps by Goremyko (Saratov State Technical University), Alexey Ko- Switching Coupling ronovski (Saratov State University), Vladimir Nedaivozov Mio Kobayashi (National Institute of Technology, Anan (Saratov State University), Anastasia Runnova (Saratov State College), Tetsuya Yoshinaga (Tokushima University) University), Gilles Van Luijtelaa (Radboud University), ⇒ Proc. pp. 638–641, [Paper ID: 5122] ⇒ Proc. pp. 646–649, [Paper ID: 5034]

A mutually coupled Gauss map generates chaotic itinerancy We introduce a practical and computationally not demand- even though that is a two-dimensional coupled map. In order ing technique for inferring interactions at various micro- to control interchange of each trajectory of maps, we pro- scopic levels between the units of a neuronal brain network posed the method of switching the coupling strength and in- from the measurements and the processing of macroscopic vestigated the basin of attraction and the destination by the EEG signals. Our methodology is then applied for getting a one-time mapping at the multiple coupling strength. As the glance to the microscopic interactions occurring in a neuro- result, we found the appropriate coupling strength for the physiological system, namely, in the thalamo-cortical neural proposed switching method to successfully interchange the network of an epileptic brain of a rat, where the group elec- trajectory of each map at any discrete time steps. trical activity is registered by means of multichannel EEG. We demonstrate that it is possible to infer the degree of inter- Keywords: chaotic itinerancy, Gauss map, coupled map, action between the interconnected regions of the brain during switching coupling strength different types of brain activities, and to estimate the regions’ participation in the generation of the different levels of consciousness. Keywords: Network analysis, epileptic brain, EEG processing, interactions, synchronization C2L-B Complex Networks and Systems £ / / DATE: 2017 12 7 13:35–15:55 ¢C2L-B-3 ¡ Self-Similarity in Explosive Transition ROOM: Room 2 to/from Synchronization in Random Networks Chair: Mikhail Prokhorov (Institute of Radio Engineering Aleksei Koronovskii (Saratov State University), Maria and Electronics of Russian Academy of Sciences) Kurovskaya (Saratov State University), Olga Moskalenko £ (Saratov State University), Alexander Hramov (Yuri Gagarin ¢C2L-B-1 ¡Collective Dynamics in Networks of Bistable State Technical University of Saratov) Time-Delayed Feedback Oscillators Coupled via the ⇒ Proc. pp. 650–652, [Paper ID: 5012] Mean Field Mikhail Prokhorov (Institute of Radio Engineering and In the present report we consider the remarkable phe- Electronics of Russian Academy of Sciences), Danil Kul- nomenon of the explosive synchronization in complex net- minskiy (Institute of Radio Engineering and Electronics of works of oscillators. We have shown that this phenomenon Russian Academy of Sciences), Vladimir Ponomarenko (In- is a consequence of the self-similarity in the stability loss stitute of Radio Engineering and Electronics of Russian of the synchronous clusters of different size. The manifes- Academy of Sciences) tation of the self-similarity can be revealed through the pro- ⇒ Proc. pp. 642–645, [Paper ID: 5027] cesses of the network synchronous state destruction. As a sample system the random network of Kuramoto oscillators We investigate the collective dynamics of oscillators in a has been considered. We have shown that the destruction of network of identical bistable time-delayed feedback systems the synchronous state of the random network goes step by globally coupled via the mean field. The variety of dy- step through the self-similar configurations of interacting os- namical regimes in the network results from the presence of cillators. bistable states with substantially different frequencies in cou-

57 Keywords: Synchronization, Network, Oscillators, Explo- sive Transition

£ ¢C2L-B-4 ¡Interaction Between Numerous Oscillatory C2L-C Applied Mathematics / Self- Processes in the Human Cardiovascular System Vladimir Ponomarenko (Saratov Branch of Kotel’nikov In- Validating Numerics stitute of Radio Engineering and Electronics of RAS), Ana- / / toly Karavaev (Saratov Branch of Kotel’nikov Institute of DATE: 2017 12 7 13:35–15:55 Radio Engineering and Electronics of RAS), Yuri Ishbula- ROOM: Room 3 tov (Saratov Branch of Kotel’nikov Institute of Radio En- Chairs: Steve Huntsman (BAE Systems plc) and Tomoaki gineering and Electronics of RAS), Anton Kiselev (Saratov Okayama (Hiroshima City University) State Medical University n.a. V. I. Razumovsky), Mikhail £ Prokhorov (Saratov Branch of Kotel’nikov Institute of Radio ¢C2L-C-1 ¡Topological Density Estimation Engineering and Electronics of RAS) Steve Huntsman (BAE Systems) ⇒ Proc. pp. 653–656, [Paper ID: 5028] ⇒ Proc. pp. 661–664, [Paper ID: 5002]

A model of human cardiovascular system is proposed which We introduce topological density estimation (TDE), in describes the main heart rhythm and the autonomic regula- which the multimodal structure of a probability density function of heart function and arterial blood pressure. The model tion is topologically inferred from sample data and subse- takes into account the inﬂuence of respiration on these pro- quently used to perform bandwidth selection for kernel den- cesses. It is shown that accounting of the autonomous reg- sity estimation. We show that TDE has performance and run- ulation of mean arterial blood pressure allows to obtain the time advantages over competing methods of kernel density model signals whose statistical and spectral characteristics estimation for highly multimodal probability density func- are qualitatively and quantitatively similar to those for ex- tions. We also show that TDE can determine its own suit- perimental signals. The proposed model demonstrates the ability for use, and we explain its performance. phenomenon of synchronization of the mean arterial pres- Keywords: density estimation, unimodal category, topolog- sure regulatory system by the signal of respiration with the ical persistence, mode hunting, bump hunting varying frequency, which is observed in the physiological experiments. Keywords: cardiovascular system, mathematical model, ar- £ terial pressure, autonomous regulation ¢C2L-C-2 ¡Finding All Local Optima and All Real Roots Without Derivatives Using Mathematical Structures of Univariate Continuous Functions on an Interval £ Hideo Kanemitsu (Hokkaido University of Education) ⇒ ¢C2L-B-5 ¡Coherent Resonance in Neuronal Networks Proc. pp. 665–668, [Paper ID: 5026] Under External Signal Inﬂuence In this paper, we show the mathematical structure of an op- Andrey Andreev (Yuri Gagarin State Technical Univercity timization problem and that of a nonlinear equation prob- of Saratov), Alexander Hramov (Yuri Gagarin State Techni- lem with a continuous function on an interval. We propose cal Univercity of Saratov), Vladimir Makarov (Yuri Gagarin searching methods for all local (min/max)ima and all roots State Technical Univercity of Saratov), Svetlana Pchelint- with a theoretical guarantee such that all solutions are found seva (Yuri Gagarin State Technical Univercity of Saratov), out. Anastasia Runnova (Yuri Gagarin State Technical Univercity of Saratov), Alexander Pisarchik (Center for Biomedical Keywords: mathematics structure, univariate function, non- Technology) linear equation, continuous, optimization ⇒ Proc. pp. 657–660, [Paper ID: 5044]

We ﬁnd that the regularity in the spiking behaviour of a £ neuronal network maximizes at a certain level of environ- ¢C2L-C-3 ¡ Nonlinear Response Theory of Electronic ment noise. This eﬀect referred to as coherence resonance is Transport in graphene demonstrated in a random complex network of Rulkov neu- Seiichi Kuwata (hiroshima city university), Hisato Fujisaka rons. An external stimulus added to some of neurons excites (hiroshima city university) them, and then activates other neurons in the network. The ⇒ Proc. pp. 669–672, [Paper ID: 5068] network coherence is also maximized at the certain stimulus amplitude, coupling strength, and the number of stimulated We show that, based upon the Luttinger mode, the satura- neurons. tion drift velocity vsat of grapheme is inversely proportional to the dielectric constant of graphene, ϵ, with the propor- Keywords: Rulkov Motif, Synaptic Coupling,Coherent Res- tional constant on the order of the Bohr velocity. we discuss onance, Neuronal Network the substrate-dependent ϵ by considering of the role of metal

58 contacts attached to the graphene. In0.53Ga0.47As/In0.52Al0.48As Multi-Quantum Wells Keywords: luttinger model, drift velocity, dielectric con- Structure Using Photocurrent Spectroscopy stant, graphene Koichi Tanaka (Hiroshima City University) ⇒ Proc. pp. 681–684, [Paper ID: 5185]

Determination of parameters is important for application to £ opto-electronic devices. We determined some band param- On Stability of State-Dependent Homoge- ¢C2L-C-4 ¡ eters in In0.53Ga0.47As/In0.52Al0.48As multi-quantum neous Systems wells before. And experimental transition energies were Kenta Hoshino (Aoyama Gakuin University) obtained using photocurrent spectroscopy. Effective mass ⇒ Proc. pp. 673–676, [Paper ID: 5165] is estimated from the transition energies. E-k curve was This study deals with the stability analysis of dynamical sys- drawn using a wave equation for our modeling studied by tems whose vector fields possess the homogeneity. In partic- our experimental parameters. ular, this study focuses on the case where the homogeneity of Keywords: eigen-state, InGaAs/AlGaAs, MQW, Photocur- the vector fields depends on states of dynamical systems. Al- rent Spectroscopy, E-k curve though the state dependent homogeneity has been employed in recent studies of the digital implementation of nonlinear control systems, their stability property has not been inves- £ tigated. In this paper, we show that the local stability of the ¢C2L-D-2 ¡Optimizing Dynamical States for High-Speed state dependent homogeneous systems implies the global sta- Photonic Computing bility. In addition, we show the existence of global homoge- Michael Wishon (Georgia Tech Lorraine), Alexandre Loc- neous Lyapunov functions. quet (Georgia Tech Lorraine), Chien-Yuan Chang (Georgia Keywords: Nonlinear dynamical systems, Nonlinear control Tech Lorraine), Daeyoung Choi (Georgia Tech Lorraine), theory, Stability, Lyapunov stability theory David Citrin (Georgia Tech Lorraine) ⇒ Proc. pp. 685–687, [Paper ID: 5003]

Photonic neuromorphic computing is the intersection of sub £ nanosecond fluctuations with the performance and energy Explicit Error Bound for Muhammad-Mori’s ¢C2L-C-5 ¡ efficiency of the human brain. These systems operate based SE-Sinc Indefinite Integration Formula over the Semi- on a nonlinear transformation of input streams, and by fully Infinite Interval understanding the attractor dynamics of the transformation Ryota Hara (Hiroshima City University), Tomoaki Okayama it is possible to optimize these dynamics for a computing (Hiroshima City University) ⇒ task. By optimizing the dynamical state of our neural net, Proc. pp. 677–680, [Paper ID: 5053] we are able to process over 70 million digits per second. In this paper, we consider two numerical integration for- Keywords: Deep Learning, Machine Learning, Bifurcations mulas over the semi-infinite interval. First, Stenger pro- and Chaos, Nonlinear Dynamics posed a formula by means of the Sinc indefinite integration and a single-exponential (SE) transformation. Second, Muhammad–Mori proposed another formula by replacing £ the SE transformation in Stenger’s formula. An error bound ¢C2L-D-3 ¡ Model Free Object Tracking Using CNN of Stenger’s formula has been already given. However, any Features and Color Information error bound of Muhammad–Mori’s formula has not yet been Keiichiro Adachi (Meijo University), Kazuhiro Hotta given. In this study, we give an error bound for Muhammad– (Meijo University) Mori’s formula, and compare the two formulas. ⇒ Proc. pp. 688–691, [Paper ID: 5046] Keywords: Sinc indefinite integration, error bound, verified Object tracking under occlusion is a challenging problem. numerical integration In this paper, we propose a robust object tracking method under occlusion by adaptive integration of 2 kinds of trackers. Our tracking method is based on CNN features. However, the maximum value in the response map obtained by CNN features becomes small under occlusion. Thus, we / can judge the occurrence of occlusion from the change of C2L-D Deep Learning Optics maximum value. When the target is occluded, we change the learning rate of a tracker using CNN features. A tracker / / DATE: 2017 12 7 13:35–15:55 using color information is also integrated because the tracker ROOM: Room 4 is robust to occlusion. Chairs: Takashi Matsubara (Kobe University) and Michael Keywords: CNN features, Color information, tracking J. Wishon (Georgia Tech Lorraine) £ ¢C2L-D-1 ¡ A Modeling of Eigen-States in

59 £ instead of disease-related brain activity. In this study, we ¢C2L-D-4 ¡Multi-Stage Convolutional Neural Networks propose an fMRI brain image analysis method based on for Robustness to Scale Transformation conditional variational auto-encoder (CVAE), which is a Ryo Takahashi (Kobe University), Takashi Matsubara deep learning model extracting features with given label (Kobe University), Kuniaki Uehara (Kobe University) information. The CVAE can classify fMRI images without ⇒ Proc. pp. 692–695, [Paper ID: 5056] another feature extraction process, suppresses overfitting, and achieves better diagnosis accuracy. Convolutional neural networks (CNNs) have demonstrated Keywords: Deep learning, Auto-encoder, fMRI, Mental remarkable results in image classification for benchmark Disorder tasks and practical uses.However, the CNNs have a limited robustness to geometric transformations such as scaling and rotation.This study focuses on scale transformation and proposes a novel network architecture called weight-shared multi-stage network (WSMS-Net), consisting of multiple stages of CNNs. The proposed WSMS-Net is easily combined with existing deep CNNs, such as ResNet, and enables C2L-E-1 Recent Progress in Optimiza- them to acquire a robustness to scaling of objects. The tion Algorithms using Nonlinear Tech- experimental results for CIFAR-10, CIFAR-100 datasets demonstrate that existing deep CNNs combined with the niques proposed WSMS-Net achieve higher accuracy for image classification tasks only with little increase in the number of DATE: 2017/12/7 13:35–15:55 parameters and computation time. ROOM: Room 5 Keywords: Image Classification, Scale Invariance, Convo- Chair: Takayuki Kimura (Nippon Institute of Technology) lutional Neural Network, Shared Weights £ ¢C2L-E-1-1 ¡Statistical Analysis of Chaotic Neuron in the Mutually-Connected Chaotic Search Method £ Takafumi Matsuura (Nippon Institute of Technology) ¢C2L-D-5 ¡Action Recognition Using Motion Emphasis ⇒ Proc. pp. 704–707, [Paper ID: 5195] and Video Divisions Takuro Takeshita (Meijo University), Kazuhiro Hotta To find near-optimal solutions of combinatorial optimization (Meijo University) problems, a method which uses mutually- connected chaotic ⇒ Proc. pp. 696–699, [Paper ID: 5058] neural network (CNN) has already been proposed. However, it is not so easy to generate feasible solutions of the prob- We propose an action recognition method. It is reported lems from the CNN, because an output of a chaotic neu- that action recognition using both RGB and optical flow ron takes an analog value. Each neuron generates a com- is effective. We add two devices to the method in order to plicated spike time-series. In this paper, to decide good so- improve the accuracy further. The first device is to use the lutions of the combinatorial optimization problems from the difference of feature map at Pool5 layer. After encoding CNN, we analyzed complexity of the spike time-series from by LCD and VLAD, we concatenate the features of RGB each chaotic neuron by using a statistical measure, such as with optical flow. Since the sequential order is important coefficient of variation (CV) and local variation of interspike for action recognition, we divide a video into three clips intervals (LV), which are frequently used in the field of neu- and above features are extracted from each clip. This is the roscience. second device. Keywords: Heuristic Method, Chaotic Neural Network, Keywords: CNN, action recognition, frame dividion Combinatorial Optimization Problem

£ £ ¢C2L-D-6 ¡ Deep Neural Generative Model for fMRI ¢C2L-E-1-2 ¡An Eﬃcient Routing Method Using Learn- Image Based Diagnosis of Mental Disorder ing Ability for Load Balancing Tetsuo Tashiro (Kobe University), Takashi Matsubara (Kobe Hiroki Sawade (Nippon Institute of Technology), Takayuki University), Kuniaki Uehara (Kobe University) Kimura (Nippon Institute of Technology) ⇒ Proc. pp. 700–703, [Paper ID: 5169] ⇒ Proc. pp. 708–711, [Paper ID: 5183]

Diagnosis of mental disorders based on fMRI brain image The number of Internet users continues to increase and the analysis often has two steps: unsupervised feature extraction packet congestion frequently occurs in the communication and supervised classification. This is expected to prevent network. As another method for removing the packet con- overfitting due to a small size of medical fMRI. However, gestion, we propose a packet routing method called learning the unsupervised feature extraction has a risk of extracting ability for load balancing (LALB) in this paper. From the individual variability (such as brain shape) as a feature results of numerical experiments, the proposed method real- izes efficient routings for the computer networks.

60 Keywords: Packet Routing, Optimisation, network C2L-E-2 Optimization / Oscillations

DATE: 2017/12/7 13:35–15:55 £ ROOM: Room 5 ¢C2L-E-1-3 ¡ Evaluation of the Performance of the Chair: Yoshiki Sugitani (Ibaraki University) Chaotic Neural Network for Solving the Steiner Tree £ Problem in Graphs with Incidence Costs C2L-E-2-1 Parallel Computing of Neural Network Al- Misa Fujita (Tokyo University of Science), Takayuki ¢ ¡ gorithm for Fixed Channel Assignment Problem in Cel- Kimura (Nippon Institute of Technology), Kantaro Fujiwara lular Radio Networks with CUDA (Tokyo University of Science), Tohru Ikeguchi (Tokyo Uni- Sho Ikeda (The University of Aizu), Yoichi Tomioka (The versity of Science) University of Aizu), Junji Kitamichi (The University of ⇒ Proc. pp. 712–715, [Paper ID: 5184] Aizu) In this paper, we evaluate a performance of the chaotic neu- ⇒ Proc. pp. 720–723, [Paper ID: 5038] ral networks for solving the Steiner tree problem in graphs In recent years, graphics processing units (GPUs) have been with incidence costs: edges adjacent to terminal vertices used for faster numerical calculation because they have many have large costs. In real world problems, such as wire length cores and can calculatevia parallel computing. In this paper, estimations, the edges adjacent to terminal vertices often we propose a CUDA C program that aims to accelerate the have large costs. Thus, the effective method to solve the extended maximum neural network algorithm for the fixed Steiner tree problem in graphs with incidence costs is de- channel assignment problem (FCAP) in cellular radio net- sired. From this viewpoint, we investigate the performance works using a general-purpose GPU (GPGPU). We evaluate of the method using the chaotic neural network for solving the developed program using the existing benchmark prob- the Steiner tree problem in graphs with incidence costs. Nu- lem in the FCAP. Results show that the processing speed of merical experiments revealed that the key-path based neigh- the developed program is 2.4 times to 15.1 times faster than borhood is not effective for the graph with incidence costs. in the case of using only a CPU. Keywords: The Steiner tree problem in graphs, The chaotic Keywords: GPGPU, Neural Network, Combinational Opti- neural network, The key path neighborhood, Combinatorial mization, Cellular Radio Networks optimization

£ £ ¢C2L-E-2-2 ¡Stability Analysis of Amplitude Death in De- ¢C2L-E-1-4 ¡Performance Analysis of Routing Methods layed Coupled Oscillators on a Cubic Graph with Three Using Complex Network Theory Different Connection Delays Yuuki Morita (Nippon Institute of Technology), Takayuki Takahiro Kikuchi (Ibaraki University), Yoshiki Sugitani Kimura (Nippon Institute of Technology) (Ibaraki University) ⇒ Proc. pp. 716–719, [Paper ID: 5148] ⇒ Proc. pp. 724–727, [Paper ID: 5092] In 2016, we propose a method using degree information and The present study investigates the stability of amplitude chaotic neurodynamics as a method for efficient packet rout- death in a delayed-coupled oscillator network on a cubic ing, and we confirmed that the packet arrival rate improves graph.The oscillator network on the cubic graph is con- by about 130% as compared to the shortest hop method structed by Cartesian product of three sub-networks, whose widely used in real computer networks. However, the de- topologies are path graph with two nodes.Since the sub- ciding factor for efficient routing has not yet been clarified. networks have different connection delays, the connection Therefore, in this paper, we reconstruct the network using an delays of the oscillator network are not identical.Although information of packet transmissions obtained from routing, such oscillator network is difficult to be analyzed, the prop- and try to evaluate the performance of each routing method erty of the Cartesian product allows us to analyze the stabil- from the viewpoint of complex network theory. From the ity easily.The analytical results are confirmed via numerical results, we confirmed that the proposed method efficiently simulations. uses the edges of the whole network to transmit the packets as compared to the other routing methods. Keywords: Amplitude death, Delayed connection, Cartesian product network Keywords: chaotic neurodynamics, complex network, combinatorial optimization problem £ ¢C2L-E-2-3 ¡Behavior of Excited Interacting Particles Confined in a Quantum Dot Keita Matsuura (Hiroshima City University), Hisato Fu- jisaka (Hiroshima City University), Masaru Fukushima (Hi- roshima City University), Takeshi Kamio (Hiroshima City University)

61 ⇒ Proc. pp. 728–731, [Paper ID: 5177]

We investigate the behavior of classical particles which are the models of interacting electrons excited electromagneti- cally in a quantum dot. The interaction is repulsion among the particles. First, we investigate the behavior when the repulsion is zero and the excitation has photon energy equal to the diﬀerence between two eigenenergies so that particle states changes from an eigenstate to another. By numerical analysis, we have found that the particles stay in a region for a long time. Secondly, keeping the photon energy, we increased the repulsive force. The numerical analysis has presented that the particles take circular motion and the speed of the motion increases with the force. Keywords: Quantum dot, Stochastic quantization, Multi- particle Quantum system

62 Author Index

Cruz-Ancona, Christopher Diego: B1L-A-2-2 (p. 40), C0L-D-4 A (p. 54) Cruz-Hernandez,´ Cesar: B1L-A-1-3 (p. 39) Abidi, Abdessalem: B1L-E-2 (p. 45) Adachi, Keiichiro: C2L-D-3 (p. 59) D Adachi, Masaharu: A2L-C-2 (p. 28), B1L-E-1 (p. 45) Adiono, Trio: C0L-E-2 (p. 55), C0L-E-3 (p. 55) Dai, Mingzhi: A3L-E-1-1 (p. 37) Ahn, Chang-Jun: A3L-A-1 (p. 30), A3L-A-4 (p. 31), A3L-A-7 (p. Dambre, Joni: A3L-C-1 (p. 34) 32), B2L-E-5 (p. 51), C0L-E-4 (p. 55) Delwar, Tahesin Samira: C0L-E-4 (p. 55) Aihara, Kazuyuki: A3L-B-2 (p. 32), B1L-E-5 (p. 45) Denis Le Coarer, Florian: A3L-C-1 (p. 34) Aihara, Takeshi: B1L-B-1-1 (p. 40) Dinh, Xuan Tue: B2L-D-4 (p. 50) Akeno, Ryusuke: B2L-C-1 (p. 48) Dmitriev, Sergey: B2L-A-5 (p. 47), C0L-A-1 (p. 51) Alonso-Sanz, Ramon: A3L-B-1 (p. 32) Doi, Shinji: C0L-A-4 (p. 52) Alvarez, Joaquin: B1L-A-1-4 (p. 40) Doi, Yusuke: C0L-A-2 (p. 52), C0L-A-3 (p. 52) Ando, Hiroyasu: A2L-A-3 (p. 26), B1L-B-2-2 (p. 42) Dong, Jia-Xin: A3L-C-8 (p. 35) Ando, Kaito: B2L-D-2 (p. 49) Ando, Masahiko: A3L-C-2 (p. 34) E Andreev, Andrey: C2L-B-5 (p. 58) Aoki, Mayu: A2L-C-4 (p. 28) Ebisawa, Satoshi: B1L-C-5 (p. 43) Aoki, Takeru: B1L-B-2-3 (p. 42) El Aroudi, Abdelali: A3L-D-2-2 (p. 36) Aomori, Hisashi: A3L-E-2-6 (p. 38), B2L-B-2 (p. 47) Endo, Tetsuro: B2L-A-4 (p. 47) Arai, Shintaro: A3L-D-1-3 (p. 36) Ergun,¨ Salih: A2L-B-2 (p. 26) Arbabi, Hassan: A1L-A-1 (p. 19) Evazzade, Iman: B2L-A-5 (p. 47) Arellano-Delgado, Adrian: B1L-A-1-3 (p. 39) Asada, Masahiro: B1L-C-3 (p. 42) F Asai, Tetsuya: A1L-E-1 (p. 24) Feng, Baofeng: B2L-A-3 (p. 46) B Flynn, Morris: A2L-A-2 (p. 25) Freiberger, Matthias: A3L-C-1 (p. 34) Bertozzi, Andrea: A3L-E-2-1 (p. 37), A3L-E-2-4 (p. 38), Fuada, Syifaul: C0L-E-2 (p. 55), C0L-E-3 (p. 55) A0L-A-1 (p. 19) Fujimoto, Ken’ichi: A3L-B-4 (p. 33) Bientsman, Peter: A3L-C-1 (p. 34) Fujimoto, Takuya: C0L-A-4 (p. 52) Brantingham, Paul: A3L-E-2-4 (p. 38) Fujino, Takayoshi: A2L-B-1 (p. 26) Budisic, Marko: A1L-A-2 (p. 19) Fujisaka, Hisato: A3L-A-6 (p. 31), A3L-A-8 (p. 32), B2L-B-1 (p. Bunsen, Masatoshi: A3L-C-4 (p. 34) 47), B2L-B-5 (p. 48), B2L-E-1 (p. 50), B2L-E-4 (p. Buono, Pietro-Luciano: B1L-D-1-4 (p. 44) 51), C2L-C-3 (p. 58), C2L-E-2-3 (p. 61) Fujishiro, Misaki: A3L-A-4 (p. 31) C Fujita, Misa: C2L-E-1-3 (p. 61) Fujita, Tomohiro: C0L-B-3 (p. 52) Cahyadi, Willy Anugrah: C0L-E-4 (p. 55) Fujiwara, Kantaro: A2L-C-4 (p. 28), B1L-B-2-2 (p. 42), Chakraborty, Basabi: A3L-E-2-3 (p. 38) C2L-E-1-3 (p. 61) Chakraborty, Goutam: A3L-E-2-5 (p. 38) Fukushima, Masaru: A3L-A-6 (p. 31), B2L-E-1 (p. 50), Chan, Bernard: B1L-D-1-4 (p. 44) C2L-E-2-3 (p. 61) Chan, Sze-Chun: A3L-C-8 (p. 35) Funakoshi, Takahiro: A1L-D-2 (p. 23) Chang, Chien-Yuan: C2L-D-2 (p. 59) Furukawa, Tatsuya: A3L-D-2-1 (p. 36) Chetverikov, Alexander: C0L-A-1 (p. 51) Chi, Nan: C0L-E-1 (p. 55) G Chikazawa, Takahiro: B2L-D-3 (p. 50) Chilakamarri, Kiran: B1L-D-1-1 (p. 43) Goremyko, Mikhail: C2L-B-2 (p. 57) Cho, Seungil: A1L-C-4 (p. 22), A1L-C-5 (p. 22), A1L-C-6 (p. Goto, Tomio: A3L-B-6 (p. 33) 22) Gulich, Damian:´ B1L-C-1 (p. 42) Choi, Daeyoung: C2L-D-2 (p. 59) Guyeux, Christophe: B1L-E-2 (p. 45) Chung, Yeon Ho: C0L-E-4 (p. 55) Chung, Yeon-Ho: B2L-E-5 (p. 51) H Citrin, David: C2L-D-2 (p. 59)

63 Hamaguchi, Tomoki: A1L-E-3 (p. 25) Jin’no, Kenya: B2L-C-4 (p. 49), B2L-C-5 (p. 49) Hanada, Kazuki: A2L-C-1 (p. 27) Jitsumatsu, Yutaka: A2L-B-5 (p. 27) Hara, Naoyuki: B1L-D-2-3 (p. 45), B2L-D-1 (p. 49), B2L-D-5 (p. 50) K Hara, Ryota: C2L-C-5 (p. 59) Hara, Shinsuke: A1L-D-4 (p. 23) Kadokura, Takumi: C0L-B-2 (p. 52) Harada, Tomochika: A1L-C-2 (p. 22), A1L-C-4 (p. 22), A1L-C-5 Kageyama, Itsuki: B1L-B-1-2 (p. 41) (p. 22), A1L-C-6 (p. 22) Kakei, Masafumi: B1L-B-2-2 (p. 42) Hariya, Yosuke: B2L-C-4 (p. 49) Kameda, Tomoya: A1L-E-4 (p. 25), A1L-E-5 (p. 25) Hasegawa, Mikio: A2L-A-3 (p. 26), A2L-D-4 (p. 29), A3L-D-1-4 Kamio, Takeshi: A3L-A-6 (p. 31), A3L-A-8 (p. 32), B2L-B-1 (p. (p. 36) 47), B2L-B-5 (p. 48), B2L-E-1 (p. 50), B2L-E-4 (p. Hashimoto, Ken-Ya: A3L-A-1 (p. 30), A3L-A-7 (p. 32) 51), C2L-E-2-3 (p. 61) Hashimoto, Shuhei: B2L-D-3 (p. 50) Kamiyama, Kyohei: B1L-E-5 (p. 45) Hashimoto, Wataru: A1L-B-6 (p. 21) Kanemitsu, Hideo: C2L-C-2 (p. 58) Hatanaka, Kazuki: A2L-D-2 (p. 29) Kang, Siu: A1L-C-3 (p. 22) Hayakawa, Shota: A3L-A-8 (p. 32), B2L-E-4 (p. 51) Kanno, Kazutaka: A3L-C-4 (p. 34), B1L-C-6 (p. 43) Hayashi, Hatsuo: B1L-B-1-1 (p. 40) Karavaev, Anatoly: C2L-B-4 (p. 58) Hida, Itaru: A1L-E-1 (p. 24) Karsaklian Dal Bosco, Andreas: B1L-C-3 (p. 42) Higuchi, Hiroyuki: A1L-B-2 (p. 20) Karube, Shu: C2L-A-5 (p. 56) Hikawa, Hiroomi: A2L-C-1 (p. 27), A2L-C-3 (p. 28), B1L-E-6 Kato, Hideyuki: A2L-C-4 (p. 28), B1L-B-2-1 (p. 41) (p. 46) Katumba, Andrew: A3L-C-1 (p. 34) Hikihara, Takashi: A2L-A-1 (p. 25), A2L-A-2 (p. 25), A2L-A-3 Kawahara, Yoshinobu: A1L-A-3 (p. 19) (p. 26) Kawakami, Hiroshi: C2L-A-3 (p. 56) Hikita, Haru: B2L-C-3 (p. 48) Kazakos, Demetrios: B1L-D-1-1 (p. 43) Hiraguri, Takefumi: A1L-D-5 (p. 24) Khan, Karim: A3L-E-1-1 (p. 37) Hirano, Satoshi: A3L-B-6 (p. 33) Kikkawa, Ryosuke: C0L-C-3 (p. 53) Hirose, Akira: A2L-E-2 (p. 30), A2L-E-3 (p. 30) Kikuchi, Takahiro: C2L-E-2-2 (p. 61) Honda, Kazuaki: A3L-A-3 (p. 31) Kim, Eom-Ji: A3L-E-1-2 (p. 37) Horio, Yoshihiko: A2L-B-1 (p. 26), A2L-B-3 (p. 27), A2L-E-4 Kim, Giheon: A1L-E-2 (p. 24) (p. 30) Kim, Song-Ju: A3L-C-7 (p. 35) Hoshino, Jin: A1L-D-2 (p. 23), A1L-D-3 (p. 23) Kim, Yeo-Myeong: A3L-E-1-2 (p. 37) Hoshino, Kenta: C2L-C-4 (p. 59) Kim, Yeomyeong: A1L-E-2 (p. 24) Hotchi, Ryosuke: A1L-D-1 (p. 23) Kimura, Masayuki: A2L-A-2 (p. 25), B2L-A-1 (p. 46), C0L-A-4 Hotta, Kazuhiro: C2L-D-3 (p. 59), C2L-D-5 (p. 60) (p. 52) Hramov, Alexander: C2L-B-2 (p. 57), C2L-B-3 (p. 57), C2L-B-5 Kimura, Mutsumi: A1L-E-4 (p. 25), A1L-E-5 (p. 25), A3L-E-1-1 (p. 58) (p. 37) Huntsman, Steve: C2L-C-1 (p. 58) Kimura, Takayuki: C2L-E-1-2 (p. 60), C2L-E-1-3 (p. 61), C2L-E-1-4 (p. 61) I Kiselev, Anton: C2L-B-4 (p. 58) Kishimoto, Koki: C0L-B-3 (p. 52) Ida, Yuta: A3L-A-5 (p. 31), B2L-E-2 (p. 50) Kitahara, Hideaki: B1L-C-4 (p. 43) Igarashi, Jun: B1L-B-1-3 (p. 41) Kitamichi, Junji: C2L-E-2-1 (p. 61) Ikebe, Masayuki: A1L-E-1 (p. 24) Kitoh, Ai: A2L-E-1 (p. 29) Ikeda, Sho: C2L-E-2-1 (p. 61) Kiyofuji, Naoya: A1L-D-4 (p. 23) Ikeguchi, Tohru: A2L-C-4 (p. 28), B1L-B-2-2 (p. 42), C2L-E-1-3 Kobayashi, Koichi: A1L-B-3 (p. 21), A1L-B-6 (p. 21) (p. 61) Kobayashi, Mio: C2L-A-6 (p. 57) In, Visarath: B1L-D-1-3 (p. 44) Kodama, Satoshi: A3L-B-7 (p. 33) Inaba, Naohiko: C0L-D-1 (p. 54) Kohmoto, Keiko: A2L-C-5 (p. 28) Inagi, Masato: A2L-B-4 (p. 27) Kohno, Ena: B2L-B-1 (p. 47) Inden, Ryota: B1L-A-1-2 (p. 39) Kohno, Hiromasa: A3L-B-4 (p. 33) Inoue, Isao: A2L-E-1 (p. 29) Komatsu, Shinichi: B1L-C-5 (p. 43) Ishbulatov, Yuri: C2L-B-4 (p. 58) Komuro, Motomasa: B1L-E-5 (p. 45) Ishigame, Atushi: A1L-A-4 (p. 20) Konishi, Keiji: B1L-D-2-3 (p. 45), B2L-D-1 (p. 49), B2L-D-5 (p. Ishikawa, Masato: B1L-A-2-1 (p. 40) 50) Ishimura, Kazuyoshi: B1L-A-1-2 (p. 39) Koronovski, Alexey: C2L-B-2 (p. 57) Ishiwara, Hiroshi: A3L-E-1-2 (p. 37) Koronovskii, Aleksei: C2L-B-3 (p. 57) Isoshima, Takashi: A3L-C-6 (p. 35) Korznikova, Elena: B2L-A-5 (p. 47), C0L-A-1 (p. 51) Itaya, Koji: A2L-B-5 (p. 27) Koso, Akihiro: A3L-E-2-2 (p. 37) Ito, Hidetaka: A2L-C-1 (p. 27), A2L-C-3 (p. 28), B1L-E-6 (p. 46) Kouda, Takahiro: B2L-D-1 (p. 49) Itoh, Susumu: B2L-B-2 (p. 47) Kousaka, Takuji: B2L-C-2 (p. 48) Itoh, Yoshitaka: B1L-E-1 (p. 45) Kuang, Da: A3L-E-2-1 (p. 37) Kubo, Ryogo: A1L-D-1 (p. 23), A1L-D-2 (p. 23), A1L-D-3 (p. J 23) Kubota, Madoka: A2L-A-2 (p. 25)

64 Kudo, Shinya: B1L-B-1-4 (p. 41) Miyano, Kyosuke: A3L-D-1-1 (p. 35) Kulminskiy, Danil: C2L-B-1 (p. 57) Miyauchi, Arata: A2L-D-5 (p. 29), A3L-D-1-1 (p. 35), C0L-B-1 Kumaki, Takeshi: C0L-B-3 (p. 52) (p. 52), C0L-B-2 (p. 52), C0L-C-3 (p. 53) Kumeno, Hironori: C2L-A-4 (p. 56) Mochida, Masaki: C0L-B-1 (p. 52) Kurebayashi, Wataru: A1L-A-6 (p. 20), B1L-A-1-1 (p. 39) Mohr, Ryan: A1L-A-2 (p. 19) Kurihara, Asato: B2L-E-5 (p. 51) Morikawa, Osamu: B1L-C-4 (p. 43) Kurihara, Kazuyoshi: B1L-C-4 (p. 43) Morino, Yoshiaki: A1L-D-5 (p. 24) Kuriki, Yoma: A3L-C-3 (p. 34) Morita, Yuuki: C2L-E-1-4 (p. 61) Kuroda, Kaori: A2L-D-4 (p. 29), A3L-D-1-4 (p. 36) Moskalenko, Olga: C2L-B-3 (p. 57) Kurokawa, Hiroaki: B2L-C-2 (p. 48) Motomura, Masato: A1L-E-1 (p. 24) Kurovskaya, Maria: C2L-B-3 (p. 57) Motter, Adilson: B1L-D-1-2 (p. 44), B0L-A-1 (p. 39)) Kuwashima, Fumiyoshi: A2L-C-5 (p. 28), B1L-C-4 (p. 43) Munezawa, Tsubasa: A3L-B-6 (p. 33) Kuwata, Seiichi: C2L-C-3 (p. 58) Murata, Yukio: A2L-D-4 (p. 29) Murokawa, Naoya: B2L-E-2 (p. 50) L N Lopez-Guti´ errez,´ Rosa Martha: B1L-A-1-3 (p. 39) Leite, Maria: B1L-D-1-1 (p. 43) Nagahara, Masaaki: A1L-B-2 (p. 20) Li, Jr-Shin: A1L-A-5 (p. 20) Nagai, Hidetoshi: C0L-C-4 (p. 53) Li, Song-Sui: A3L-C-8 (p. 35) Nagano, Yuki: A3L-E-2-6 (p. 38) Ling, Liming: B2L-A-3 (p. 46) Nagayama, Shinobu: A2L-B-4 (p. 27) Lizarraga-Lizarraga, Manuel Alberto: B1L-A-2-3 (p. 40) Naik, Suketu: A2L-A-4 (p. 26) Locquet, Alexandre: C2L-D-2 (p. 59) Nair, Dhanya: A2L-A-4 (p. 26) Longhini, Patrick: B1L-D-1-3 (p. 44) Naka, Taiki: A1L-E-6 (p. 25) Lu, Xingyu: C0L-E-1 (p. 55) Nakagawa, Rei: A3L-B-7 (p. 33) Luttjohann, Annika: C2L-B-2 (p. 57) Nakagawa, Shigeru: A2L-E-2 (p. 30), A2L-E-3 (p. 30) Nakajima, Makoto: B1L-C-4 (p. 43) M Nakamura, Ibuki: B2L-E-1 (p. 50) Nakane, Ryosho: A2L-E-2 (p. 30), A2L-E-3 (p. 30) Mendez-Ram´ ´ırez, Rodrigo: B1L-A-1-3 (p. 39) Nakano, Daiju: A2L-E-2 (p. 30), A2L-E-3 (p. 30) Ma, Li-Yuan: B2L-A-2 (p. 46) Nakano, Hidehiro: A2L-D-5 (p. 29), A3L-D-1-1 (p. 35), C0L-B-1 Machhout, Mohsen: B1L-E-2 (p. 45) (p. 52), C0L-B-2 (p. 52), C0L-C-2 (p. 53), C0L-C-3 (p. Maeda, Joji: B1L-C-5 (p. 43) 53) Maeda, Yutaka: B1L-E-6 (p. 46) Nakao, Hiroya: A1L-A-6 (p. 20), B1L-A-1-1 (p. 39) Makarov, Vladimir: C2L-B-2 (p. 57), C2L-B-5 (p. 58) Nakaoka, Shinji: A2L-A-5 (p. 26) Maksimen, Vladimir: C2L-B-2 (p. 57) Nakashima, Yasuhiko: A1L-E-4 (p. 25), A1L-E-5 (p. 25) Mammoli, Andrea: A1L-A-4 (p. 20) Nakashima, Yasuo: A3L-D-1-3 (p. 36) Marquez-Martinez, Luis Alejandro: B1L-A-2-3 (p. 40) Nakatani, Akihiro: C0L-A-2 (p. 52), C0L-A-3 (p. 52) Martinez-Guerra, Rafael: B1L-A-2-2 (p. 40), C0L-D-4 (p. 54) Nakayama, Yu: A3L-A-2 (p. 31), A3L-A-3 (p. 31) Martinez-Ramon, Manel: A1L-A-4 (p. 20) Naruse, Makoto: A3L-C-7 (p. 35) Maruta, Kazuki: A3L-A-1 (p. 30), A3L-A-2 (p. 31), A3L-A-3 (p. Natsume, Kiyohisa: B1L-B-1-2 (p. 41), B1L-B-1-4 (p. 41) 31), A3L-A-4 (p. 31), A3L-A-7 (p. 32) Nedaivozov, Vladimir: C2L-B-2 (p. 57) Masuda, Naoyuki: A1L-B-5 (p. 21) Nieuwenhuis, Rochelle: A2L-A-2 (p. 25) Masuda, Yoichi: B1L-A-2-1 (p. 40) Ninagawa, Shigeru: A3L-B-1 (p. 32) Matsubara, Hanako: A3L-D-2-3 (p. 36) Nishi, Masahiro: A3L-D-2-1 (p. 36) Matsubara, Takashi: C2L-D-4 (p. 60), C2L-D-6 (p. 60) Nishimori, Kentaro: A1L-D-5 (p. 24) Matsuda, Chiaki: C2L-A-2 (p. 56) Nishimura, Tomoya: C2L-A-1 (p. 56) Matsuda, Ichiro: B2L-B-2 (p. 47) Nishimura, Yuki: B1L-D-2-2 (p. 44) Matsuda, Takahiro: A1L-D-4 (p. 23) Nishio, Yoshifumi: B2L-D-3 (p. 50), C0L-C-1 (p. 53), C0L-D-3 Matsufuji, Shinya: A3L-A-5 (p. 31), B2L-E-2 (p. 50) (p. 54) Matsumori, Tadayoshi: A3L-B-2 (p. 32) Noguchi, Daichi: A2L-C-2 (p. 28) Matsumoto, Takahiro: A3L-A-5 (p. 31), B2L-E-2 (p. 50) Matsumoto, Takuya: A3L-D-1-4 (p. 36) O Matsumura, Taishi: A1L-C-3 (p. 22) Matsushita, Haruna: B2L-C-2 (p. 48), C0L-C-1 (p. 53) Obata, Hiroyasu: A2L-D-1 (p. 28) Matsuura, Keita: B2L-E-1 (p. 50), C2L-E-2-3 (p. 61) Ogawa, Katsuhiro: B1L-E-3 (p. 45) Matsuura, Takafumi: C2L-E-1-1 (p. 60) Ogura, Takeshi: C0L-B-3 (p. 52) Medvedev, Nikolay: C0L-A-1 (p. 51) Ohara, Shoma: B1L-C-6 (p. 43) Mezic, Igor: A1L-A-1 (p. 19) Ohno, Yutaka: A3L-D-1-2 (p. 35) Mihana, Takatomo: A3L-C-7 (p. 35) Ohta, Yasuhiro: B2L-A-3 (p. 46) Miino, Yuu: C2L-A-3 (p. 56) Ohta, Yuzo: A1L-B-1 (p. 20) Minamide, Hiroaki: B1L-C-3 (p. 42) Okada, Isam: A1L-C-1 (p. 21) Mitsubori, Kunihiko: B2L-B-5 (p. 48) Okamoto, Kazuhiro: C0L-A-2 (p. 52) Miura, Ryu: A1L-D-4 (p. 23) Okayama, Tomoaki: C2L-C-5 (p. 59)

65 Oku, Makito: A3L-B-2 (p. 32) Shindo, Takuya: B2L-C-4 (p. 49), B2L-C-5 (p. 49) Okumura, Tadashi: A3L-C-2 (p. 34) Shirao, Takuya: B1L-C-4 (p. 43) Omori, Tatsuya: A3L-A-1 (p. 30) Shirasaka, Sho: A1L-A-6 (p. 20), B1L-A-1-1 (p. 39) Onizawa, Tomoya: A2L-D-3 (p. 29) Shitara, Isamu: A1L-D-5 (p. 24) Ono, Fumie: A1L-D-4 (p. 23) Stoliar, Pablo: A2L-E-1 (p. 29) Orima, Takemori: A2L-B-3 (p. 27) Suetani, Hiromichi: A3L-C-5 (p. 34) Osher, Stanley: A3L-E-2-1 (p. 37) Sugano, Chihiro: A3L-C-3 (p. 34), A3L-C-4 (p. 34) Osogami, Masahiro: A3L-B-3 (p. 33) Sugaya, Satomi: A1L-A-4 (p. 20) Ota, Kenko: A1L-D-6 (p. 24) Sugita, Kazuya: B2L-B-4 (p. 48) Otake, Tsuyoshi: B2L-B-2 (p. 47) Sugitani, Yoshiki: B2L-D-1 (p. 49), C0L-D-2 (p. 54), C2L-E-2-2 Ott, Thomas: C0L-C-1 (p. 53) (p. 61) Ozeki, Takashi: A3L-B-5 (p. 33) Sun, Guanghui: C0L-A-3 (p. 52) Sunada, Satoshi: B1L-C-2 (p. 42) P Susuki, Yoshihiko: A1L-A-4 (p. 20) Suzuki, Safumi: B1L-C-3 (p. 42) Palacios, Anonio: B1L-D-1-3 (p. 44) Suzuki, Takehiro: A2L-D-3 (p. 29) Palacios, Antonio: B1L-D-1-4 (p. 44) Suzuki, Tomoya: A2L-D-3 (p. 29) Pchelintseva, Svetlana: C2L-B-5 (p. 58) Pena Ramirez, Jonatan: B1L-A-1-4 (p. 40) T Pena-Ramirez, Jonatan: B1L-A-2-3 (p. 40) Perez-Pinacho, Claudia Alejandra: B1L-A-2-2 (p. 40), C0L-D-4 Tadokoro, Yukihiro: A3L-D-1-2 (p. 35), A3L-D-1-3 (p. 36) (p. 54) Tai, Mitsuharu: A3L-C-2 (p. 34) Pisarchik, Alexander: C2L-B-5 (p. 58) Takadama, Keiki: B1L-B-2-3 (p. 42) Ponomarenko, Vladimir: C2L-B-1 (p. 57), C2L-B-4 (p. 58) Takahashi, Norikazu: A3L-E-2-2 (p. 37), B1L-D-2-1 (p. 44) Prokhorov, Mikhail: C2L-B-1 (p. 57), C2L-B-4 (p. 58) Takahashi, Ryo: C2L-D-4 (p. 60) Putkaradze, Vakhtang: A2L-A-2 (p. 25) Takahashi, Satoru: A1L-B-2 (p. 20) Takahashi, Satoshi: B2L-E-3 (p. 51) Q Takamaeda-Yamazaki, Shinya: A1L-E-1 (p. 24) Takano, Chisa: A2L-D-1 (p. 28) Qian, Yun: A1L-B-4 (p. 21) Takano, Kosuke: A3L-C-3 (p. 34) Qiao, Liang: C0L-E-1 (p. 55) Takano, Kousuke: A3L-C-4 (p. 34) Takebayashi, Tomoyoshi: A1L-B-2 (p. 20) R Takeda, Kentaro: C2L-A-2 (p. 56) Takeda, Seiji: A2L-E-2 (p. 30), A2L-E-3 (p. 30) Rontani, Damien: A3L-C-1 (p. 34) Takeshita, Takuro: C2L-D-5 (p. 60) Ruiz Ramos, Isaac: B1L-A-1-4 (p. 40) Takeuchi, Masaki: C0L-C-1 (p. 53) Runnova, Anastasia: C2L-B-2 (p. 57), C2L-B-5 (p. 58) Takizawa, Kenichi: A1L-D-4 (p. 23) Tanaka, Atsushi: A1L-C-2 (p. 22), A1L-C-5 (p. 22), A1L-C-6 (p. S 22) Tanaka, Atushi: A1L-C-4 (p. 22) Sadahisa, Hirokazu: B1L-B-1-4 (p. 41) Tanaka, Gouhei: A2L-E-2 (p. 30), A2L-E-3 (p. 30) Saito, Takuya: B2L-A-4 (p. 47) Tanaka, Hiroya: A3L-D-1-2 (p. 35) Saito, Toshimichi: A1L-E-3 (p. 25), B2L-B-4 (p. 48), B2L-C-1 Tanaka, Koichi: C2L-D-1 (p. 59) (p. 48), B2L-D-2 (p. 49) Tanaka, Mariko: C0L-C-4 (p. 53) Sakai, Yutaka: B1L-B-1-1 (p. 40) Tanaka, Takahiro: B2L-B-5 (p. 48) Sakata, Hironori: A1L-C-4 (p. 22) Tani, Masahiko: B1L-C-4 (p. 43) Sakaue, Naoya: B1L-C-4 (p. 43) Tanji, Yuichi: A3L-B-4 (p. 33), C2L-A-1 (p. 56) Samura, Toshikazu: B1L-B-1-1 (p. 40) Tashiro, Tetsuo: C2L-D-6 (p. 60) Sasaki, Tomoyuki: C0L-C-2 (p. 53) Tateno, Katsumi: B1L-B-1-2 (p. 41) Sato, Hiroyuki: B1L-B-2-3 (p. 42), C0L-C-4 (p. 53) Teki, Hakui: B2L-D-1 (p. 49), B2L-D-5 (p. 50) Sato, Jinya: A3L-A-8 (p. 32) Teramae, Jun-Nosuke: A2L-D-2 (p. 29) Sato, Koki: A3L-B-7 (p. 33) Terashima, Yuta: A3L-C-7 (p. 35) Sato, Masatoshi: A3L-E-2-6 (p. 38) Toda, Hideharu: A3L-E-2-6 (p. 38), B2L-B-2 (p. 47) Sawada, Sho: C0L-B-3 (p. 52) Tokuda, Isao: B1L-A-1-2 (p. 39) Sawade, Hiroki: C2L-E-1-2 (p. 60) Tomimura, Yusho: B2L-C-2 (p. 48) Schulman, Alejandro: A2L-E-1 (p. 29) Tomioka, Yoichi: C2L-E-2-1 (p. 61) Sciamanna, Marc: A3L-C-1 (p. 34) Torikai, Hiroyuki: A1L-E-6 (p. 25), B2L-B-3 (p. 47), C2L-A-2 Sekiya, Hiroo: A3L-D-2-3 (p. 36) (p. 56) Setsuie, Atsushi: A3L-A-8 (p. 32) Toriumi, Fujio: A1L-C-1 (p. 21) Sezaki, Kaoru: A3L-A-2 (p. 31) Truong, Tri Quoc: C0L-D-1 (p. 54) Shi, Zuoqiang: A3L-E-2-1 (p. 37) Tsubone, Tadashi: B2L-C-3 (p. 48), B2L-D-4 (p. 50), C0L-D-1 Shimada, Yutaka: A2L-C-4 (p. 28) (p. 54) Shimizu, Kuniyasu: B2L-A-4 (p. 47) Tsuchiya, Minami: A1L-C-2 (p. 22) Shin, Koichi: A3L-D-2-1 (p. 36) Tsuji, Yuya: B1L-B-1-4 (p. 41)

66 Tsumura, Suguru: B2L-A-4 (p. 47) Yoshimoto, Takuya: B2L-B-3 (p. 47) Tsutsumi, Takuya: A3L-A-2 (p. 31), A3L-A-3 (p. 31) Yoshinaga, Tetsuya: C2L-A-6 (p. 57) Yuasa, Tetsuya: A1L-C-3 (p. 22) U Z Uchida, Atsushi: A3L-C-3 (p. 34), A3L-C-4 (p. 34), A3L-C-7 (p. 35), B1L-C-6 (p. 43) Zhang, Duanhao: A3L-E-2-4 (p. 38) Ueda, Shoya: A2L-C-1 (p. 27) Zhang, Duo: A3L-E-2-4 (p. 38) Uehara, Kuniaki: C2L-D-4 (p. 60), C2L-D-6 (p. 60) Zhang, Wei: A1L-A-5 (p. 20) Ueta, Tetsushi: C2L-A-3 (p. 56) Zhou, Yingjun: C0L-E-1 (p. 55) Ueyoshi, Kodai: A1L-E-1 (p. 24) Zhu, Zhonong: B2L-A-3 (p. 46) Urakami, Tomohisa: B1L-D-2-1 (p. 44) Zhu, Zuonong: B2L-A-2 (p. 46) Ushio, Toshimitsu: A1L-B-4 (p. 21), A1L-B-5 (p. 21) Uto, Taiga: B1L-D-2-2 (p. 44) Uwate, Yoko: B2L-D-3 (p. 50), C0L-C-1 (p. 53), C0L-D-3 (p. 54) V

Van Luijtelaa, Gilles: C2L-B-2 (p. 57) Velarde, Manuel: C0L-A-1 (p. 51) W

Wada, Masahiro: B1L-E-4 (p. 45) Wakabayashi, Shin’Ichi: A2L-B-4 (p. 27) Wakamiya, Naoki: A2L-D-2 (p. 29) Wang, Bao: A3L-E-2-4 (p. 38) Wang, Can: C0L-E-1 (p. 55) Wang, Liang: A1L-A-5 (p. 20) Wang, Weiliang: A3L-E-1-1 (p. 37) Wang, Yunjiao: B1L-D-1-1 (p. 43) Watanabe, Eiji: A3L-B-5 (p. 33) Wei, Xiuqin: A3L-D-2-3 (p. 36) Wiesenfeld, Kurt A.: C1L-A-1 (p. 55) Wishon, Michael: C2L-D-2 (p. 59) X

Xiong, Daxing: B2L-A-5 (p. 47) Xue, Binbin: A2L-B-4 (p. 27) Y

Yamada, Kenta: A1L-D-2 (p. 23), A1L-D-3 (p. 23) Yamagishi, Yuki: C0L-C-4 (p. 53) Yamamoto, Hitoshi: A1L-C-1 (p. 21) Yamamoto, Kohji: B1L-C-4 (p. 43) Yamamoto, Yuuki: A2L-D-1 (p. 28) Yamanaka, Yoshikazu: B2L-C-3 (p. 48) Yamane, Hiroki: A1L-E-4 (p. 25) Yamane, Toshiyuki: A2L-E-2 (p. 30), A2L-E-3 (p. 30) Yamashita, Yuh: A1L-B-6 (p. 21) Yamazato, Takaya: A3L-D-1-3 (p. 36) Yasuda, Akiyoshi: A3L-A-6 (p. 31), B2L-B-1 (p. 47) Yasuda, Muneki: A1L-C-2 (p. 22), A1L-C-4 (p. 22), A1L-C-5 (p. 22), A1L-C-6 (p. 22) Yokoyama, Michio: A1L-C-2 (p. 22), A1L-C-4 (p. 22), A1L-C-5 (p. 22), A1L-C-6 (p. 22) Yoon, Sung-Min: A3L-E-1-2 (p. 37) Yoon, Sungmin: A1L-E-2 (p. 24) Yoshida, Koki: B1L-D-2-3 (p. 45) Yoshida, Masashi: B1L-B-2-2 (p. 42) Yoshida, Sho: A3L-E-2-3 (p. 38) Yoshimi, Hikari: A2L-C-3 (p. 28)