Decentralized delayed-feedback control of a coupled ring map lattice. - Keiji Konishi; Hiroki Sugiyama; Hideki Kokame; Kentaro Hirata (ISCAS (5), 1999)

Bias-stress-induced increase in parasitic resistance of InP-based InAlAs/InGaAs HEMTs. - Tetsuya Suemitsu; Yoshino K. Fukai; Hiroki Sugiyama; Kazuo Watanabe; Haruki Yokoyama (Microelectron. Reliab., 2002)

Suppression of short-channel effect in pseudomorphic In0.25Al0.75P/In0.75Ga0.25As high electron mobility transistors. - Hideaki Matsuzaki; Hiroki Sugiyama; Haruki Yokoyama; Takashi Kobayashi; Takatomo Enoki (IEICE Electron. Express, 2004)

A 125-GHz 140-mW InGaAs/InP composite-channel HEMT MMIC power amplifier module. - Toshihiko Kosugi; Hiroki Sugiyama; Koichi Murata; Hiroyuki Takahashi; Akihiko Hirata; Naoya Kukutsu; Yuichi Kado; Takatomo Enoki (IEICE Electron. Express, 2009)

Fundamental oscillation up to 1.08THz in resonant tunneling diodes with high-indium-composition transit layers for reduction of transit delay. - Atsushi Teranishi; Kaoru Shizuno; Safumi Suzuki; Masahiro Asada; Hiroki Sugiyama; Haruki Yokoyama (IEICE Electron. Express, 2012)

Beating Analysis of Shubnikov de Haas Oscillation in In0.53Ga0.47As Double Quantum Well toward Spin Filter Applications. - Takaaki Koga; Toru Matsuura; Sébastien Faniel; Satofumi Souma; Shunsuke Mineshige; Yoshiaki Sekine; Hiroki Sugiyama (IEICE Trans. Electron., 2012)

Estimation of Transit Time in Terahertz Oscillating Resonant Tunneling Diodes with Graded Emitter and Thin Barriers. - Atsushi Teranishi; Safumi Suzuki; Kaoru Shizuno; Masahiro Asada; Hiroki Sugiyama; Haruki Yokoyama (IEICE Trans. Electron., 2012)

Graphene-channel FETs for photonic frequency double-mixing conversion over the sub-THz band. - Tetsuya Kawasaki; Adrian Dobroiu; Takanori Eto; Yuki Kurita; Kazuki Kojima; Yuhei Yabe; Hiroki Sugiyama; Takayuki Watanabe; Susumu Takabayashi; Tetsuya Suemitsu; Victor Ryzhii; Katsumi Iwatsuki; et al. (ESSDERC, 2013)

A parallel-to-serial converter based on a differentially-operated optically clocked transistor array. - Hiroshi Ishikawa 007; Tatsushi Nakahara; Hiroki Sugiyama; Ryo Takahashi (IEICE Electron. Express, 2013)

Incorporating Guest Preferences into Collaborative Filtering for Hotel Recommendation. - Fumiyo Fukumoto; Hiroki Sugiyama; Yoshimi Suzuki; Suguru Matsuyoshi (KDIR, 2014)

Exploiting Guest Preferences with Aspect-based Sentiment Analysis for Hotel Recommendation. - Fumiyo Fukumoto; Hiroki Sugiyama; Yoshimi Suzuki; Suguru Matsuyoshi (IC3K (Selected Papers), 2014)

Reliable and Efficient Parallel Transmission Protocols in P2P Networks. - Hiroki Sugiyama; Makoto Takizawa 001 (BWCCA, 2015)

A Novel Optoelectronic Parallel-to-Serial Converter for 100-Gbps Optical Packets. - Hiroshi Ishikawa 007; Salah Ibrahim; Tatsushi Nakahara; Hiroki Sugiyama; Toshikazu Hashimoto (PSC, 2018)

Realization and Preliminary Evaluation of MPI Runtime Environment on Android Cluster. - Masahiro Nissato; Hiroki Sugiyama; Kanemitsu Ootsu; Takeshi Ohkawa; Takashi Yokota (AINA, 2019)

300-GHz 120-Gb/s Wireless Transceiver with High-Output-Power and High-Gain Power Amplifier Based on 80-nm InP-HEMT Technology. - Hiroshi Hamada; Takuya Tsutsumi; Go Itami; Hiroki Sugiyama; Hideaki Matsuzaki; Kenichi Okada 001; Hideyuki Nosaka (BCICTS, 2019)

230-305 GHz, > 10-dBm-Output-Power Wideband Power Amplifier Using Low-Q Neutralization Technique in 60-nm InP-HEMT Technology. - Hiroshi Hamada; Takuya Tsutsumi; Adam Pander; Masahito Nakamura; Go Itami; Hideaki Matsuzaki; Hiroki Sugiyama; Hideyuki Nosaka (BCICTS, 2020)

300-GHz-Band 120-Gb/s Wireless Front-End Based on InP-HEMT PAs and Mixers. - Hiroshi Hamada; Takuya Tsutsumi; Hideaki Matsuzaki; Takuya Fujimura; Ibrahim Abdo; Atsushi Shirane; Kenichi Okada 001; Go Itami; Ho-Jin Song; Hiroki Sugiyama; Hideyuki Nosaka (IEEE J. Solid State Circuits, 2020)

Integrated Optical Link on Si Wafer Using Low Energy Membrane InP-based Photonic Devices. - Tatsurou Hiraki; Koji Takeda; Takuro Fujii; Takuma Aihara; Yoshiho Maeda; Hiroki Sugiyama; Tomonari Sato; Shinji Matsuo (OFC, 2025)