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Committee Date Time Place Paper Title / Authors Abstract Paper #
VLD, DC, RECONF, ICD, IPSJ-SLDM [detail] 2022-11-29
(Primary: On-site, Secondary: Online)
Method of Halved Interaction Elements with Regularity Arrangement that achieves Independent Double Systems for Scalable Fully Coupled Annealing Processing
Shinjiro Kitahara, Akari Endo, Taichi Megumi, Takayuki Kawahara (TUS) VLD2022-31 ICD2022-48 DC2022-47 RECONF2022-54
In recent years, annealing processors have been developed as solutions to large-scale combinatorial optimization problem... [more] VLD2022-31 ICD2022-48 DC2022-47 RECONF2022-54
RECONF, VLD, CPSY, IPSJ-ARC, IPSJ-SLDM [detail] 2022-01-24
Online Online FPGA Implementation of Scalable Fully Coupled Annealing Processing Sysytem by Using Multi-chip Operation
Kaoru Yamamoto, Takayuki Kawahara (TUS) VLD2021-53 CPSY2021-22 RECONF2021-61
Annealing machines can be classified into sparsely coupled types and fully coupled types. The fully coupled type has the... [more] VLD2021-53 CPSY2021-22 RECONF2021-61
ICTSSL, CAS 2022-01-20
Online Online FPGA implementation and evaluation of Ternary sparse XNOR-Net and Proposal of Ternary sparse Net without XNOR
Taichi Megumi, Takayuki Kawahara (Tokyo Univ of Science) CAS2021-55 ICTSSL2021-32
Ternary Sparse XNOR-Net is a method to suppress decline of recognition accuracy by ternarizing the weights of the neural... [more] CAS2021-55 ICTSSL2021-32
ICTSSL, CAS 2020-01-31
Tokyo   Effectiveness of Synchronization and Cooperative Behavior of Multiple Robots based on Swarm AI
Tatsuya Hiejima, Shun Kawashima, Mengnan Ke, Takayuki Kawahara (Tokyo Univ of Science) CAS2019-90 ICTSSL2019-59
 [more] CAS2019-90 ICTSSL2019-59
Hokkaido Kitayuzawa Mori-no-Soraniwa A Study on Communication Quality and Power Efficiency in IoT System for Monitoring Buildings
Kentaro Ukai, Takahiro Yamamoto, Takayuki Kawahara, Takumi Ito, Takashi Nakajima, Yoichiro Hashizume (TUS), Yozo Shoji (NICT), Mikio Hasegawa (TUS) CCS2018-30
 [more] CCS2018-30
NLP, CCS 2018-06-10
Kyoto Kyoto Terrsa A possible approach to detect a damaged position of wooden wall using neural-network classifier
Yoichiro Hashizume, Sakuya Kishi, Takashi Nakajima, Soichiro Okamura, Takahiro Yamamoto, Takayuki Kawahara, Mikio Hasegawa, Changhoon Choi, Takumi Ito (TUS) NLP2018-40 CCS2018-13
We investigated how to detect the state of the building with measuring the vibration data given by a piezoelectric senso... [more] NLP2018-40 CCS2018-13
ICD, CPSY, CAS 2017-12-14
Okinawa Art Hotel Ishigakijima Ternary Nerural Network for IoT Application
Yasuhiko Yoshida, Takayuki Kawahara (Tokyo Univ. of Science) CAS2017-82 ICD2017-70 CPSY2017-79
Implementation of AI on the object side is now expected in the IoT field. Binary neural network that binarize input, out... [more] CAS2017-82 ICD2017-70 CPSY2017-79
ICD, CPSY, CAS 2017-12-14
Okinawa Art Hotel Ishigakijima
Ryo Oiwa, Takayuki Kawahara (Tokyo Univ. of Science) CAS2017-83 ICD2017-71 CPSY2017-80
We are conducting pioneering research on health monitoring targeting timbers, and we have conducted a total of 24 classe... [more] CAS2017-83 ICD2017-71 CPSY2017-80
ICD, CPSY, CAS 2017-12-14
Okinawa Art Hotel Ishigakijima An Almost Digitally Synthesizable SAR-ADC
Kenshu Komatsu, Zule Xu, Takayuki Kawahara (TUS) CAS2017-95 ICD2017-83 CPSY2017-92
We are considering the stakelization of ADC, which is indispensable in integrated circuits, especially trying to realize... [more] CAS2017-95 ICD2017-83 CPSY2017-92
ICTSSL 2017-07-13
Kagawa Kagawa Univ. Basic Practical Verification of Building State Detection using Piezoelectric Sensor and Machine Learning aiming to Realize Safe and Secure Building IoT System
Ryo Oiwa, Sakuya Kishi, Yoichiro Hashizume, Takashi Nakajima, ChangHoon Choi, Takumi Ito, Takahiro Yamamoto, Mikio Hasegawa, Takayuki Kawahara (Tokyo Univ. of Science) ICTSSL2017-20
We have constructed a wooden building in Kunisaki City, Oita Prefecture and are doing field verifications in order to re... [more] ICTSSL2017-20
SR 2017-05-26
Tokyo Tokyo big sight [Technology Exhibit] Design and Implementation of IoT System for Monitoring Buildings
Kentaro Ukai, Takahiro Yamamoto, Takayuki Kawahara, Takumi Ito, Changhoon Choi, Takashi Nakajima, Yoichiro Hashizume (TUS), Yozo Shoji (NICT), Mikio Hasegawa (TUS) SR2017-20
We have designed and implemented a wireless sensor network system for monitoring damage of buildings. When a natural dis... [more] SR2017-20
ICD, CPSY 2016-12-15
Tokyo Tokyo Institute of Technology [Poster Presentation] Novel Annealing Model for Ising LSI Based on Implementable Acceptance Function
Yujiro Inoue, Kenta Someya, Kenta Kushihara, Takayuki Kawahara (TUS) ICD2016-77 CPSY2016-83
In recent years, IoT society gathers attention. However, further development is expected by giving information processin... [more] ICD2016-77 CPSY2016-83
ICD, CPSY 2016-12-16
Tokyo Tokyo Institute of Technology Analysis of Wide-Range-Temperature Compensation Using Isothermal-Point and Back-Gate-Bias-Control for ISFET-Array
Makoto Ogi, Zule Xu, Takayuki Kawahara (TUS) ICD2016-99 CPSY2016-105
pH sensors using ion-sensitive field effect transistors (ISFETs) are sensitive to temperature variation, which limits th... [more] ICD2016-99 CPSY2016-105
(Joint) [detail]
Kagoshima   Reduction of the Interferences of the FDM system using Mach-Zehnder Filters
Yuki Fukushima, Isamu Wakabayashi, Takayuki Kawahara (TUS) OCS2014-113 OPE2014-219
A four-channel FDM system using Mach-Zehnder filters was equalized to reduce the interference by connecting the FIR filt... [more] OCS2014-113 OPE2014-219
pp.59-64(OCS), pp.93-98(OPE)
ICD 2011-04-18
Hyogo Kobe University Takigawa Memorial Hall [Invited Talk] Trends and Multi-level-cell Technology of Spin Transfer Torque Memory
Takashi Ishigaki, Takayuki Kawahara, Riichiro Takemura, Kazuo Ono, Kenchi Ito (Hitachi), Hideo Ohno (Tohoku U.) ICD2011-1
A MLC (Multi-level cell) SPRAM (Spin transfer torque RAM) with series-stacked MTJs (Magnetic tunnel junctions) was devel... [more] ICD2011-1
SDM 2010-11-11
Tokyo Kikai-Shinko-Kaikan Bldg. [Invited Talk] Trends of Magnetic Memory; Multi-Level-Cell Spin Transfer Torque Memory
Takashi Ishigaki, Takayuki Kawahara, Riichiro Takemura, Kazuo Ono, Kenchi Ito (Hitachi), Hideo Ohno (Tohoku U.) SDM2010-173
A MLC (Multi-level cell) SPRAM (Spin transfer torque RAM) with series-stacked MTJs (Magneto tunnel junctions) was develo... [more] SDM2010-173
ICD 2010-04-22
Kanagawa Shonan Institute of Tech. A 32-Mb SPRAM with localized bi-directional write driver, '1'/'0' dual-array equalized reference scheme, and 2T1R memory cell layout
Riichiro Takemura, Takayuki Kawahara, Katsuya Miura, Hiroyuki Yamamoto, Jun Hayakawa, Nozomu Matsuzaki, Kazuo Ono, Michihiko Yamanouchi, Kenchi Ito, Hiromasa Takahashi (Hitachi), Shoji Ikeda (Tohoku Univ.), Haruhiro Hasegawa, Hideyuki Matsuoka (Hitachi), Hideo Ohno (Tohoku Univ.) ICD2010-10
A 32-Mb SPin-transfer torque RAM (SPRAM) chip was demonstrated with an access time of 32 ns and a cell write-time of 40 ... [more] ICD2010-10
ITE-MMS, MRIS 2009-10-08
Fukuoka FUKUOKA traffic center [Invited Talk] Nonvolatile RAM using spin transfer torque magnetization reversal (SPRAM)
Hiromasa Takahashi, Kenchi Ito, Jun Hayakawa, Katsuya Miura, Hiroyuki Yamamoto, Michihiko Yamanouchi (ARL, Hitachi, Ltd.), Kazuo Ono, Riichiro Takemura, Takayuki Kawahara (CRL, Hitachi, Ltd.), Ryutaro Sasaki (RIEC Tohoku Univ.), Haruhiro Hasegawa (RIEC Tohoku Univ., ARL, Hitachi, Ltd.), Shoji Ikeda (RIEC Tohoku Univ.), Hideyuki Matsuoka (ARL, Hitachi, Ltd.), Hideo Ohno (RIEC Tohoku Univ.)
The SPRAM (Spin Transfer Torque MRAM) is one of nonvolatile memories that “writing” is done by that a magnetization in M... [more]
ICD, SDM 2007-08-24
Hokkaido Kitami Institute of Technology SPRAM (SPin-transfer torque RAM) with a synthetic ferrimagnetic free layer for suppressing read disturbance and write-current dispersion
Katsuya Miura, Takayuki Kawahara, Riichiro Takemura (Hitachi, Ltd.), Jun Hayakawa (Hitachi, Ltd./Tohoku Univ.), Michihiko Yamanouchi (Hitachi, Ltd.), Shoji Ikeda, Ryutaro Sasaki (Tohoku Univ.), Kenchi Ito, Hiromasa Takahashi, Hideyuki Matsuoka (Hitachi, Ltd.), Hideo Ohno (Tohoku Univ.) SDM2007-166 ICD2007-94
SPin-transfer torque RAM (SPRAM) with MgO-barrier-based magnetic tunnel junctions (MTJs) is a promising candidate for a ... [more] SDM2007-166 ICD2007-94
ICD 2007-04-12
Oita   [Invited Talk] A 512kB Embedded Phase Change Memory with 416kB/s Write Throughput at 100μA Cell Write Current
Akira Kotabe, Satoru Hanzawa (Hitachi), Naoki Kitai (Hitachi ULSI), Kenichi Osada, Yuichi Matsui, Nozomu Matsuzaki, Norikatsu Takaura (Hitachi), Masahiro Moniwa (Renesas), Takayuki Kawahara (Hitachi) ICD2007-5
An experimental 512-kB embedded Phase Change Memory (PCM) is developed in a 0.13-μm 1.5-V CMOS technology. Three circuit... [more] ICD2007-5
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