Jian Liu, Yasuhiro Akiyama, Tatsuo Fujikawa, Yoji Yamada, Atsushi Tsukahara, Nader Rajaei, "Towards Velocity-Dependent Nonlinear Elasticity of Human Forefinger Soft Tissue for Specification Construction,"
Scientific Reports, 2026
DOI: https://doi.org/10.1038/s41598-026-40018-3,
Haoyun Peng, Shogo Okamoto, Hiroki Watanabe, Yasuhiro Akiyama, "Dynamic Gait Stability Estimated using One or Two Inertial Measurement Units Worn on the Human Body,"
Sensors, vol. 26, no. 4, 1211, 2026
DOI: https://doi.org/10.3390/s26041211,
Shogo Okamoto, Haoyun Peng, and Yasuhiro Akiyama, "Conjunctive Use of Two Bony Features’ Kinematic Information to Estimate Dynamic Gait Stability,"
Journal of Robotics and Mechatronics, vol. 38, no. 3, 2026 (accepted)
Tomohito Kuroda, Shogo Okamoto, and Yasuhiro Akiyama, "Walking-Age Estimator Based on Gait Parameters Using Kernel Regression,"
Applied Sciences, vol. 15, no. 11, 5825, 2025
DOI: 10.3390/app15115825,
Kaisei Minami, Yasuhiro Akiyama, and Takuya Umedachi, "Motion Classification With Embroidery Bend Sensors Using Multiple Zigzag-Stitch for Loose-Fitting Garments,"
IEEE Access, vol. 13, pp. 2982-2993, 2024
DOI: 10.1109/ACCESS.2024.3523292,
Tomohito Kuroda, Shogo Okamoto, and Yasuhiro Akiyama, "Prediction of Margin of Gait Stability by Using Six-DoF Motion of Pelvis,"
Sensors, vol. 24, no. 22, 7342, 2024
DOI: 10.3390/s24227342,
Yasuhiro Akiyama, Kyogo Kazumura, Shogo Okamoto, and Yoji Yamada, "Utilizing Inertial Measurement Units for Detecting Dynamic Stability Variations in a Multi-Condition Gait Experiment,"
Sensors, vol. 24, no. 21, 7044, 2024
DOI: 10.3390/s24217044,
Hiroki Watanabe, Shogo Okamoto, Tomohito Kuroda, and Yasuhiro Akiyama, "Manipulability analysis of anterior and mediolateral dynamic gait stability of young and elderly individuals,"
Journal of Robotics and Mechatronics, vol. 36, no. 6, 2024
Ziqi Liu, Shogo Okamoto, Tomohito Kuroda, and Yasuhiro Akiyama, "Estimating the Margin of Gait Stability in Healthy Elderly Using the Triaxial Kinematic Motion of a Single Body Feature,"
Applied Sciences, vol. 14, no. 7, 3067, 2024
DOI: 10.3390/app14073067,
Yasuhiro Akiyama, Shuto Yamada, Shogo Okamoto, and Yoji Yamada, "Investigation of the Effect of Physical Ability on the Fall Mitigation Motion Using the Combination of Experiment and Simulation,"
Applied Sciences, vol. 14, no. 7, 3051, 2024
DOI: 10.3390/app14073051,
Yasuhiro Akiyama, Aoto Nishizaki, Shogo Okamoto, and Yoji Yamada, "Effect of forward moment on recovery motion against tripping,"
PLOS ONE, vol. 19, no. 2, e0298045, 2024
DOI: 10.1371/journal.pone.0298045,
Yuji Hirano, Yoji Yamada, Yasuhiro Akiyama, Hibiki Nakamura, and Yasumoto Matsui, "Preliminary gait analysis of frail versus older adults,"
The Journal of Physical Therapy Science, vol. 36, pp. 87-93, 2024
Tomohito Kuroda, Shogo Okamoto, and Yasuhiro Akiyama, "Anterior and mediolateral dynamic gait stabilities attributed to different gait parameters in different age groups,"
Journal of Biomechanical Science and Engineering, vol. 19, no. 1, article no. 23-00183, 2023
DOI: 10.1299/jbse.23-00183,
Yasuhiro Akiyama, Yosuke Kuboki, Shogo Okamoto, and Yoji Yamada, "Novel approach to analyze all-round kinematic stability during curving steps,"
IEEE Access, vol. 11, pp. 10326-10335, 2023.
DOI: 10.1109/ACCESS.2023.3240441,
Jian Liu, Yoji Yamada, Yasuhiro Akiyama, Shogo Okamoto, and Yumena Iki, "Development of dummy based on impedance properties of human soft tissue using a nonlinear viscoelastic model,"
IEEE Access, vol. 11, pp. 7782-7793, 2023.
DOI: 10.1109/ACCESS.2023.3237763,
Tzu-Hsuan Hsia, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "One-touch calibration of hum-noise-based touch sensor for unknown users utilizing models trained by different users,"
Robomech Journal, vol. 9, article no. 24, 2022.
DOI: 10.1186/s40648-022-00238-4,
Takashi Inagaki, Yasuhiro Akiyama, Shogo Okamoto, Takuya Mayumi, and Yoji Yamada, "Relationship between gait stability indices and gait parameters comprising joint angles using walking data of 288 people,"
Nagoya Journal of Medical Science, vol. 85, no. 2, pp. 211-222, 2023.
DOI: 10.18999/nagjms.85.2.211,
Qingyu Sun, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Multiple Spatial Spectral Components of Static Skin Deformation for Predicting Macroscopic Roughness Perception,"
IEEE Transactions on Haptics, vol. 15, no. 3, pp. 646-654, 2022 IEEE Xplore,
Kazuya Otake, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Tactile texture display combining vibrotactile and electrostatic-friction stimuli: Substantial effects on realism and moderate effects on behavioral responses,"
ACM Transactions on Applied Perception, vol. 19, Issue 4, article no. 18, pp. 1-18, 2022
DOI: https://doi.org/10.1145/3539733,
Koki Inoue, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Apparent randomness of the normal-force dependence of the coefficient of friction between a bare finger and artificial skin under active tactile exploration,"
Applied Mechanics, vol. 3, no. 2, pp. 649-662, 2022
DOI: https://doi.org/10.3390/applmech3020038,
Tomoyuki Iwasaki, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Gait stability index built by kinematic information consistent with the margin of stability along the mediolateral direction,"
IEEE Access, vol. 10, pp. 52832-52839, 2022 IEEE Xplore,
Nanako Shimaoka, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Linking temporal dominance of sensations for primary-sensory and multi-sensory attributes using canonical
correlation analysis,"
Foods, vol. 11, no. 6, article no. 781, 2022
Koki Inoue, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Surfaces with finger-sized concave feel softer,"
IEEE Transactions on Haptics, vol. 15, no. 1, pp. 32-38, 2022
IEEE Xplore,
Kazuya Otake, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Tactile texture rendering for electrostatic friction displays: Incorporation of low-frequency friction model and high-frequency textural model,"
IEEE Transactions on Haptics, vol. 15, no. 1, pp. 68-73, 2022
IEEE Xplore,
Fengyu Li, Yasuhiro Akiyama, Xianglong Wan, Shogo Okamoto, and Yoji Yamada, "A Built-in Sensor System Monitoring Internal Shear Strain and Stress Distribution for Soft Materials,"
IEEE Access, vol. 10, pp. 319-327, 2022
IEEE Xplore,
Xiaohan Xiang, Yoji Yamada, Yasuhiro Akiyama, Hibiki Nakamura, and Naoki Kudo, "Effect of Parameters on Lumbar Compressive Force during Patient Transfer,"
Applied Sciences, vol. 11, no. 24, 11622, 2021
MDPI,
Jessica Beltran Ullauri, Yasuhiro Akiyama, Shogo Okamoto, and Yoji Yamada, "Biomechanical Analysis of Gait Compensation Strategies as a Result of Muscle Restriction,"
Applied Sciences, vol. 11, no. 18, 8344, 2021
MDPI,
Pengcheng Li, Yasuhiro Akiyama, Xianglong Wan, Kazunori Yamada, Mayu Yokoya, and Yoji Yamada, "Gait Phase Estimation Based on User-Walker Interaction Force,"
Applied Sciences, vol. 11, no. 17, 7888, 2021
MDPI,
Yasuhiro Akiyama, Hazuki Miyata, Shogo Okamoto, and Yoji Yamada, "Effect of Gait Speed on Recovery Motion from Tripping on a Treadmill,"
Applied Sciences, vol. 11, no. 17, 7908, 2021
MDPI,
Tzu Hsuan Hsia, Shogo Okamoto, Yasuhiro Akiyama, Yoji Yamada, "Humtouch: Localization of touch on semi-conductive surfaces by sensing human body antenna signal,"
Sensors, vol. 21, no. 3, pp. 1-13, 2021
MDPI,
Xiaohan Xiang, Yoji Yamada, Yasuhiro Akiyama, Ziliang Tao, and Naoki Kudo, "Validation of Lumbar Compressive Force Simulation in Forward Flexion Condition,"
Applied Sciences, vol. 11, no. 2, 726, 2021
MDPI,
Chongyang Qiu, Shogo Okamoto, Yasuhiro Akiyama, Yoji Yamada, "Application of Supervised Principal Motion Analysis to Evaluate Subjectively Easy Sit-to-Stand Motion of Healthy People,"
IEEE Access, vol. 9, pp. 73251-73261, 2021
IEEE Xplore,
Yosuke Kuboki, Yasuhiro Akiyama, Shogo Okamoto, and Yoji Yamada, "The influence of hip joint rotation of a physical assistant robot on curving motion,"
Advanced Robotics, vol. 35, no. 2, pp. 108-117, 2020
Taylor&Francis,
Yuma Shiraishi, Shogo Okamoto, Naomi Yamada, Koki Inoue, Yasuhiro Akiyama, and Yoji Yamada, "Effective position of the rotation axis of an ankle stretching machine and the effect of misalignment,"
Journal of Biomechanical Science and Engineering, vol. 15, no. 4, article no. 20-00202-20-00202, 2020. J-STAGE,
Naomi Yamada, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Principal motion analysis of manual stretching techniques for the ankle joints,"
Journal of Physical Therapy Science, vol. 32, no. 9, pp. 584-590, 2020
J-STAGE,
Tomoaki Iwasaki, Shogo Okamoto, Yasuhiro Akiyama, Yoji Yamada, "Principal Motion Ellipsoids: Gait Variability Index Invariant with Gait Speed,"
IEEE Access, vol. 8, pp. 213330-213339, 2020
IEEE Xplore
Fengyu Li, Yasuhiro Akiyama, Xianglong Wan, Shogo Okamoto, and Yoji Yamada, "Measurement of shear strain field in a soft material using a sensor system consisting of distributed piezoelectric polymer film,"
Sensors, vol. 20, no. 12, pp. 3484, 2020
MDPI,
Yasuhiro Akiyama, Ryota Kushida, Shogo Okamoto, and Yoji Yamada, "Characteristics of recovery motion resulting from side contact with a physical assistant robot worn during gait,"
IEEE Transactions on Human-Machine Systems, vol. 50, no. 6, pp. 518-528, 2020
IEEE Xplore,
Xianglong Wan, Yi Liu, Yasuhiro Akiyama, and Yoji Yamada, "Monitoring contact behavior during assisted walking with a lower limb exoskeleton,"
IEEE Transactions on Neural Systems and Rehabilitation Engineering, vol. 28, no. 4, pp. 869-877, 2020
IEEE Xplore
Yuma Shiraishi, Shogo Okamoto, Naomi Yamada, Koki Inoue, Yasuhiro Akiyama, and Yoji Yamada, "Pneumatically-driven stretching machine for ankle dorsiflexion: Safety concepts and effectiveness test involving healthy young subjects,"
ROBOMECH Journal, vol. 7, article 10, 2020
Koki Inoue, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Effect of material hardness on friction between a bare finger and dry and lubricated artificial skin,"
IEEE Transactions on Haptics, vol. 13, no. 1, pp. 123-129, 2020.
IEEE Xplore,
Yasuhiro Akiyama, Yusuke Fukui, Shogo Okamoto, and Yoji Yamada, "Effects of exoskeletal gait assistance on the recovery motion following tripping,"
PLOS ONE, vol. 15, no. 2, e0229150, 2020
[html]
Saeed Abdolshah, Nader Rajaei, Yasuhiro Akiyama, Yoji Yamada, and Shogo Okamoto, "Safety considerations of forward falls,"
Journal of Musculoskeletal and Neuronal Interactions, vol. 20, no. 2, pp. 176-184, 2020
Saeed Abdolshah, Nader Rajaei, Yasuhiro Akiyama, Yoji Yamada, and Shogo Okamoto, "Investigation into hand impact force during forward falls on uneven terrain,"
International Journal of Precision Engineering and Manufacturing, vol. 21, pp. 509-517, 2019
[html]
Jessica Gabriela Beltran Ullauri, Yasuhiro Akiyama, Shogo Okamoto, and Yoji Yamada, "Technique to reduce the minimum toe clearance of young adults during walking to simulate the risk of tripping of the elderly,"
PLOS ONE, vol. 14, no. 6, e0217336, 2019
[html]
Kohei Yamakawa, Shogo Okamoto, Ryu Kubo, Naomi Yamada, Yasuhiro Akiyama, and Yoji Yamada, "Knee pain patient simulation for recommendation of sit-to-stand handrail positions,"
IEEE Transactions on Human-Machine Systems, vol. 49, no. 5, pp. 461-467, 2019. IEEE Xplore,
Yasuhiro Akiyama, Kento Mitsuoka, Shogo Okamoto, and Yoji Yamada, "Experimental analysis of the fall mitigation motion caused by tripping based on the motion observation until shortly before ground contact,"
Journal of Biomechanical Science and Engineering, vol. 14, no. 1, pp. 18-00510, 2019
[html]
Hikaru Hasegawa, Shogo Okamoto, Nader Rajaei, Masayuki Hara, Noriaki Kanayama, Yasuhiro Akiyama, and Yoji Yamada, "Body-Ownership Illusion by Gazing at a Blurred Fake Hand Image,"
Lecture Notes in Electrical Engineering, vol. 535, pp. 9-14, 2019
[html]
Yuma Sakai, Yasuhiro Akiyama, Yoji Yamada, and Shogo Okamoto, "Evaluation of effects caused by individual differences in human shape that affect the safe utilization of wearable robots,"
ROBOMECH Journal, vol. 5, no. 1, 20, 2018
[html]
Saeed Abdolshah, Nader Rajaei, Yasuhiro Akiyama, Yoji Yamada, and Shogo Okamoto, "Longitudinal rollover strategy as effective intervention to reduce wrist injuries during forward fall,"
IEEE Robotics and Automation Letters, vol. 3, no. 4, pp. 4187-4192, 2018
Yuma Sakai, Yasuhiro Akiyama, Yoji Yamada, and Shogo Okamoto, "A three-dimensional skin-shape reproduction mechanism for evaluating the risk of wounds when using a wearable robot,"
SICE Journal of Control, Measurement, and System Integration, vol. 11, no. 2, pp. 128-135, 2018
Yasuhiro Akiyama, Hitoshi Toda, Takao Ogura, Shogo Okamoto, and Yoji Yamada, "Classification and analysis of the natural corner curving motion of humans based on gait motion,"
Gait and Posture, vol. 60, pp. 15-21, 2018
[pdf]
Yasuhiro Akiyama, Shogo Okamoto, Hitoshi Toda, Takao Ogura, and Yoji Yamada, "Gait motion for naturally curving variously shaped corners,"
Advanced Robotics, vol. 32, no. 2, pp. 77-88, 2018
Xuewei Mao, Yoji Yamada, Yasuhiro Akiyama, and Shogo Okamoto, "Characteristics of dummy skin contact mechanics during developing process of skin abrasion trauma,"
Tribology Letters, vol. 65, article no. 133, 2017
[pdf]
Xuewei Mao, Yoji Yamada, Yasuhiro Akiyama, Shogo Okamoto, and Kengo Yoshida, "Safety verification method for preventing friction blisters during utilization of physical assistant robots,"
Advanced Robotics, vol. 31, no. 13, pp. 680-694, 2017
Yoji Yamada, Xuewei Mao, Kengo Yoshida, Yasuhiro Akiyama, Shogo Okamoto, "A verification method for testing abrasion in the use of restraint type personal care robots," Biosystems and Biorobotics, vol. 16, pp. 205-209, 2017
Yasuhiro Akiyama, Shogo Okamoto, Yoji Yamada, and Kenji Ishiguro, "Measurement of contact behavior including slippage of cuff when using wearable physical assistant robot," IEEE Transactions on Neural Systems & Rehabilitation Engineering, vol. 24, no. 7, pp. 784-793, 2016
[pdf]
Yasuhiro Akiyama, Yoji Yamada, and Shogo Okamoto, "Interaction forces beneath cuffs of physical assistant robots and their motion-based estimation," Advanced Robotics, vol. 29, no. 20, pp. 1315-1329, 2015
[pdf]
Shun Ishikawa, Shogo Okamoto, Kaoru Isogai, Yasuhiro Akiyama, Naomi Yanagihara, and Yoji Yamada, "Assessment of robotic patient simulators for training in manual physical therapy examination techniques,"
PLOS ONE, vol. 10, no. 4, e0126392, 2015
Shun Ishikawa, Shogo Okamoto, Yasuhiro Akiyama, Kaoru Isogai, and Yoji Yamada, "Simulated crepitus and its reality-based specification using wearable patient dummy,"
Advanced Robotics, vol. 29, no. 11, pp. 699-706, 2015
Damiano Zanotto, Yasuhiro Akiyama, Paul Stegall, and Sunil K. Agrawal, "Knee Joint Misalignment in Exoskeletons for the Lower Extremities: Effects on User's Gait," IEEE Transactions on Robotics, vol. 31, no. 4, pp. 978-987, 2015
Yasuhiro Akiyama and Yoshifumi Inatani, "Construction of Sustainable Mars Logistics System - The Analysis of the Interplanetary Trajectory and the Effect of Stay Cycle-," Transactions of Japan Society for Aeronautical and Space Sciences, Space Technology Japan, vol. 12, no. ists29, Pk_77-Pk_82, 2014
Yasuhiro Akiyama and Yoshifumi Inatani, "Construction of Sustainable Mars Logistics System and Feasibility Assessment," Transactions of the JSASS / Aerospace Technology Japan, vol. 56, no. 4, pp. 215-222, 2013
Yasuhiro Akiyama and Yoshifumi Inatani, "Survivability Improvement Using Logistics Network for Future Sustainable Manned Mars Exploration", Advances in the Astronautical Sciences, vol. 138, pp. 147-156, 2010
Toshiyuki Obikawa, Yoshifumi Takemura, Yasuhiro Akiyama, Jun Shinozuka, and Hiroyuki Sasahara, "Microscopic phase-dependent residual stresses in the machined surface layer of two-phase alloy", Journal of Materials Processing Technology, vol. 209, no. 9, pp. 4496-4501, 2009
Yasuhiro Akiyama, Yoshifumi Inatani, "Economic rationality of On-Orbit Servicing by reduction of transportation cost", Transactions of Japan Society for Aeronautical and Space Sciences, vol. 7, no. ists26, pt_9-pt_14, 2009
学会発表 / Proceedings
飯島龍, 秋山靖博, "転倒動画の 3 次元姿勢推定精度向上を目的としたフィルタ処理および AI 画像処理,"
日本機械学会北陸信越支部2026年合同講演会, 長野, Mar. 6, 2026
Peng Haoyun, Shogo Okamoto, Hiroki Watanabe, and Yasuhiro Akiyama, "Dynamic gait stability estimation using IMU-based kinematic data,"
IEEE Global Conference on Consumer Electronics, pp. 759-761, Osaka, Sep. 23, 2025
Hiroki Watanabe, Shogo Okamoto, Peng Haoyun, and Yasuhiro Akiyama, "Prediction of dynamic gait stability using kinematic motion of center of mass: Enhancement by stratified learning,"
IEEE Global Conference on Consumer Electronics, pp. 983-985, Osaka, Sep. 23, 2025
Peng Haoyun, Shogo Okamoto, and Yasuhiro Akiyama, "Conjunctive use of two body parts' kinematic information to estimate dynamic postural stability,"
Proceedings in 2024 IEEE 13th Global Conference on Consumer Electronics (GCCE), Kokura, Oct. 2024
Yoshikazu Sakashita and Yasuhiro Akiyama, "The Effects of Assist Algorithms for Gait Assist Robot on Physical Stability During Unplanned Gait Termination,"
Proceedings in 2023 IEEE 12th Global Conference on Consumer Electronics (GCCE), Nara, Oct. 13, 2023
[pdf]
Tomohito Kuroda, Shogo Okamoto, and Yasuhiro Akiyama, "Verifying the Independence of Anterior and Mediolateral Margin of Gait Stability Indices,"
Proceedings in 2022 IEEE 11th Global Conference on Consumer Electronics (GCCE), Osaka, 2022, Oct.
Ziqi Liu, Tomohito Kuroda, Shogo Okamoto, and Yasuhiro Akiyama, "Estimation of Mediolateral Gait Postural Stability using Time-Series Pelvis Angular Velocities,"
Proceedings in 2022 IEEE 11th Global Conference on Consumer Electronics (GCCE), Osaka, 2022, Oct.
Ibuki Tara, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Heightening fear response to horror video scenes by applying vibratory stimuli to upper bodies of viewers,"
Proceedings in IEEE 4th Global Conference on Life Sciences and Technologies (LifeTech'22), pp. 254-256, Osaka, 2022, Mar.
Kazuya Otake, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Magnitude estimation of self-speed under different visual cue conditions in virtual space,"
Proceedings in IEEE 4th Global Conference on Life Sciences and Technologies (LifeTech'22), pp. 411-413, Osaka, 2022, Mar.
Tzu-Hsuan Hsia, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "HumTouch: Localization of a finger in purified water using humming-noise-driven human-body electric currents,"
Proceedings in IEEE 4th Global Conference on Life Sciences and Technologies (LifeTech'22), pp. 69-71, Osaka, 2022, Mar.
Qingyu Sun, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Differences in pleasant texture stimuli between fingertips and the palm,"
Proceedings in IEEE 4th Global Conference on Life Sciences and Technologies (LifeTech'22), pp. 226-228, Osaka, 2022, Mar.
Ibuki Tara, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "How important is the timing of vibrotactile stimuli for the excitation of an emotional response for audio-visual content?,"
Proceedings of IEEE 10th Global Conference on Consumer Electronics (GCCE'21), pp. 183-185, Kyoto, 2021, Oct.
Tzu-Hsuan Hsia, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Localization performance of hum-noise-based touch sensor (HumTouch) with unknown participants,"
Proceedings of IEEE 10th Global Conference on Consumer Electronics (GCCE'21), pp. 815-816, Kyoto, 2021, Oct.
Kazuya Otake, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Virtual tactile texture using electrostatic friction display for natural materials: The role of low and high frequency textural stimuli,"
Proceedings of IEEE International Conference on Robot and Human Interactive Communication (Ro-man'21), pp. 392-397, Online (British Columbia, Canada), 2021, Aug.
Ko Suzuki, Shogo Okamoto, Yasuhiro Akiyama, Yuma Shiraishi, Naomi Yamada, and Yoji Yamada, "Alignment of anatomical rotation axis when using one degree-of-freedom ankle stretching exerciser,"
Proceedings of IEEE Global Conference on Life Sciences and Technologies, pp. 61-63, Nara, 2021, Mar.
Kyogo Kazumura, Yasuhiro Akiyama, Taro Naganeo, Shogo Okamoto, and Yoji Yamada, "Index of gait stability using inertial measurement unit,"
Proceedings of IEEE Global Conference on Life Sciences and Technologies, pp. 29-30, Nara, 2021, Mar.
Hiroki Kito, Yoji Yamada, Jian Liu, Yasuhiro Akiyama, Shogo Okamoto, "Proposal of Fail-Safe Contact Motion Control and its Simulation using CRANE-X7,"
Proceedings of IEEE International Conference on Intelligence and Safety for Robotics (ISR'21), pp. 161-165, Nagoya, 2021, Mar.
Yasuhiro Akiyama, Yoichi Asano, Hiroyasu Ikeda, Yoshihiro Nakabo, Yuichiro Shimizu, "Safety Guidance to Develop a Robotic Devices for Nursing Care,"
Proceedings of IEEE International Conference on Intelligence and Safety for Robotics (ISR'21), pp. 81-84, Nagoya, 2021, Mar.
Jian Liu, Yoji Yamada, Yasuhiro Akiyama, "Calculating the Supplied Energy for Physical Human-Robot Interaction,"
Proceedings of IEEE International Conference on Intelligence and Safety for Robotics (ISR'21), pp. 157-160, Nagoya, 2021, Mar.
Naomi Yamada, Shogo Okamoto, Yukiko Fuwa, Yasuhiro Akiyama, Yoji Yamada, "Effects of 4 Weeks of Foot Stretching Using An Automatic Stretching Machine: A Case Report,"
Proceedings of IEEE International Conference on Intelligence and Safety for Robotics (ISR'21), pp. 74-76, Nagoya, 2021, Mar.
Kiichi Kondo, Yasuhiro Akiyama, Shogo Okamoto, Yoji Yamada, "Effect of Different Gait Phase-Based Assist Patterns of a Wearable Robot on Gait Motion,"
Proceedings of IEEE International Conference on Intelligence and Safety for Robotics (ISR'21), pp. 378-381, Nagoya, 2021, Mar.
Takuya Mayumi, Yasuhiro Akiyama, Shogo Okamoto, Yoji Yamada, "Identification of healthy elderly's gait characteristics by analyzing gait parameters,"
Proceedings of IEEE International Conference on Intelligence and Safety for Robotics (ISR'21), pp. 220-223, Nagoya, 2021, Mar.
Shuto Yamada, Yasuhiro Akiyama, Shogo Okamoto, Yoji Yamada, "Estimation of effects of recovery step length on severity of injuries caused by the trip and fall,"
Proceedings of IEEE International Conference on Intelligence and Safety for Robotics (ISR'21), pp. 216-219, Nagoya, 2021, Mar.
Ibuki Tara, Shogo Okamoto, Yasuhiro Akiyama, Takashi Inagaki, Yoji Yamada, "Temporal characteristics of skin conductance and subjective intensity in response to audio-visual and vibrotactile unpleasant stimuli,"
Proceedings of IEEE International Conference on Intelligence and Safety for Robotics (ISR'21), pp. 24-27, Nagoya, 2021, Mar.
Tomoyuki Iwasaki, Shogo Okamoto, Yasuhiro Akiyama, Takashi Inagaki, Yoji Yamada, "Walking Motions with High Margin-Of-Stability Values,"
Proceedings of IEEE International Conference on Intelligence and Safety for Robotics (ISR'21), pp. 224-228, Nagoya, 2021, Mar.
Tomoyuki Iwasaki, Shogo Okamoto, Yasuhiro Akiyama, Takashi Inagaki, and Yoji Yamada, "Kinematic gait stability index highly correlated with the margin of stability: Concept and interim report,"
Proceedings of IEEE/SICE International Symposium on System Integration (SII'21), pp. 347-350, Iwaki, 2021, Jan.
Jian Liu, Yoji Yamada, Yasuhiro Akiyama, Shogo Okamoto, and Yumena Iki, "A novel safety-oriented control strategy for manipulators based on the observation and adjustment of the external
momentum,"
Proceedings of International Conference on Computer, Control and Robotics (ICCCR'21), Shanghai, 2021, Jan.
Tzu-Hsuan Hsia, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "HumTouch: Localization of touch on cylindrical object,"
Proceedings of IEEE 9th Global Conference on Consumer Electronics (GCCE'20), pp. 519-521, Kobe, 2020, Oct.
Senri Hashimoto, Naomi Yamada, Shogo Okamoto, Yuma Shiraishi, Yasuhiro Akiyama, and Yoji Yamada, "Effect of static stretching using foot stretching device in the elderly: An interim report,"
Proceedings of IEEE 9th Global Conference on Consumer Electronics (GCCE'20), pp. 651-653, Kobe, 2020, Oct.
Yumena Iki, Yoji Yamada, Yasuhiro Akiyama, Shogo Okamoto, and Jian Liu, "Designing a dummy skin by evaluating contacts between a human hand and a robot end tip,"
Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS'2020), pp. 11334-11337, Las Vegas, 2020, Oct.
Xuanchen Ji, Yasuhiro Akiyama, Hisae Hayashi, Yoji Yamada, and Shogo Okamoto, "Development of deep clustering model to stratify occurrence risk of diabetic foot ulcers based on foot pressure
patterns and clinical indices,"
Proceedings of International Joint Conference on Biometrics (IJCB'20), Houston, 2020, Sep.
Kyoichi Tachi, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "State-space modeling of temporal dominance data: A case study using strawberry,"
Proceedings of the 8th International Conference on Kansei Engineering and Emotion Research. KEER'2020,
Advances in Intelligent Systems and Computing, vol. 1256, pp. 139-148, Tokyo, 2020, Sep. Springer,
Nanako Shimaoka, Shogo Okamoto, Kyoichi Tachi, Yasuhiro Akiyama, and Yoji Yamada, "Layered modeling of sensory and affective responses: Modification by considering unique factors of
affective responses,"
Proceedings of the 8th International Conference on Kansei Engineering and Emotion Research. KEER'2020,
Advances in Intelligent Systems and Computing, vol. 1256, pp. 168-173, Tokyo, 2020, Sep. Springer,
Tzu-Hsuan Hsia, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "HumTouch: Kernel regression-based localization of touch on a paper,"
Proceedings of IEEE Global Conference on Life Sciences and Technologies (LifeTech'2020), pp. 28-30, Kyoto, 2020, Mar. IEEE Xplore,
Koki Inoue, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Random switch of adhesion and deformation friction depends on material hardness,"
Proceedings of IEEE Global Conference on Life Sciences and Technologies, (LifeTech'2020), pp. 204-206, Kyoto, 2020, Mar. IEEE Xplore,
Giryeon Kim, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Softness presentation via friction force control on electrostatic tactile panel display,"
Proceedings of IEEE Global Conference on Life Sciences and Technologies, (LifeTech'2020), pp. 219-221, Kyoto, 2020, Mar. IEEE Xplore,
Takashi Inagaki, Shogo Okamoto, Tomoyuki Iwasaki, Yasuhiro Akiyama, and Yoji Yamada, "Comparison of gait variability and stability indices,"
Proceedings of IEEE Global Conference on Life Sciences and Technologies, (LifeTech'2020), pp. 72-74, Kyoto, 2020, Mar. IEEE Xplore,
Tomoyuki Iwasaki, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Principal motion ellipsoids: Gait variability index based on principal motion analysis,"
Proceedings of IEEE/SICE International Symposium on System Integrations, Honolulu, Jan, 2020
Chongyang Qiu, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Lower-limb moments during sit-to-stand movement with different handrail grip position and trunk tilt angle,"
Proceedings of IEEE/SICE International Symposium on System Integrations, Honolulu, Jan, 2020
Chen-Yu Cheng, Shogo Okamoto, Li Pengcheng, Yasuhiro Akiyama, Chongyang Qiu, and Yoji Yamada, "Encouragement of squat-lifting: Feasibility study of a highly usable passive knee assistive device,"
Proceedings of IEEE/SICE International Symposium on System Integrations, Honolulu, Jan, 2020
Tomoyuki Iwasaki, Shogo Okamoto, Yasuhiro Akiyama, and Yoji Yamada, "Generalized principal motion analysis: Classification of sit-to-stand motions,"
Proceedings of IEEE Global Conference on Consumer Electronics (GCCE'19), pp. 679-681, Osaka, Nov, 2019
Kyoichi Tachi, Shogo Okamoto, Yasuhiro Akiyama and Yoji Yamada, "HumTouch: Finger gesture recognition on hydrogel-painted paper using hum-driven signals,"
Proceedings of IEEE Global Conference on Consumer Electronics (GCCE'19), pp. 157-159, Osaka, Nov, 2019
Fengyu Li, Yasuhiro Akiyama, Xianglong Wan, Yoji Ymada, and Shogo Okamoto, "Shear force sensor for soft material with built-in piezoelectric polymer films,"
Proceedings of IEEE Global Conference on Consumer Electronics (GCCE'19), pp. 682-684, Osaka, Nov, 2019
Yuma Shiraishi, Shogo Okamoto, Naomi Yamada, Koki Inoue, Yasuhiro Akiyama, and Yoji Yamada, "The effect of the relative position of the rotation axis of the stretching machine and the ankle,"
Proceedings of ICORS 19th International Conference on Control, Automation and Systems (ICCAS'19), Jeju, Korea, Oct, 2019
Hazuki Miyata, Yasuhiro Akiyama, Yoji Yamada, and Shogo Okamoto, "Validation of trip-induction system on a treadmill by comparison with a walking lane,"
Proceedings of ICORS 19th International Conference on Control, Automation and Systems (ICCAS'19), Jeju, Korea, Oct, 2019
Takuma Igami, Yasuhiro Akiyama, Shogo Okamoto, Yoji Yamada, "Development of adaptive gait assist algorithm using ground reaction force,"
Proceedings of Joint 12th IFAC Conference on Control Applications in Marine Systems, Robotics, and Vehicles (CAMS), and 1st IFAC Workshop on Robot Control (WROCO), pp. xx-xx, Daejon, Korea, Sep., 2019
Yuma Shiraishi, Shogo Okamoto, Naomi Yamada, Koki Inoue, Yasuhiro Akiyama, and Yoji Yamada, "Pneumatic-driven ankle stretching machine,"
Proceedings of IEEE Global Conference on Life Sciences and Technologies (LifeTech'19), pp. 10-11, Osaka, 2019, Mar. IEEE Xplore,
Chongyang Qiu, Shogo Okamoto, Naomi Yamada, Yasuhiro Akiyama, and Yoji Yamada, "Patient simulation: Handrail position for knee-OA patients considering physical burden and stability,"
Proceedings of IEEE Global Conference on Life Sciences and Technologies (LifeTech'19), pp. 12-13, Osaka, 2019, Mar. IEEE Xplore,
Shusuke Naito, Yasuhiro Akiyama, Koichiro Ohashi, Yoji Yamada, and Shogo Okamoto, "Development of a non-actuated wearable device to prevent knee buckling,"
Proceedings of the 2019 IEEE 1st Global Conference on Life Sciences and Technologies, Osaka, Japan, Mar 2019
Hikaru Hasegawa, Shogo Okamoto, Nader Rajaei, Masayuki Hara, Noriaki Kanayama, Yasuhiro Akiyama, and Yoji Yamada, "Body-ownership illusion by gazing at a blurred fake hand image,"
Haptic Interaction. AsiaHaptics 2018. Lecture Notes in Electrical Engineering, volume 535, pp. 9-14, Songdo, 2018, Nov. Springer,
Erik Kramer, Yasuhiro Akiyama, Yusuke Fukui, and Yoji Yamada, "The Change of Gait Motion During Curvilinear Obstacle Avoidance while Restricted by a Wearable Robotic Device,"
Proceedings of IEEE International Conference on Biomedical Robotics and Biomechatronics, pp. 928-933, Enschede, Netherlands, Aug 2018
Nader Rajaei, Saeed Abdolshah, Yasuhiro Akiyama, Yoji Yamada, and Shogo Okamoto, "Evaluation of Forward Fall on the Outstretched Hand Using MADYMO Human Body Model,"
Proceedings of IEEE International Conference on Biomedical Robotics and Biomechatronics, pp. 954-959, Enschede, Netherlands, Aug 2018
Nader Rajaei, Saeed Abdolshah, Yasuhiro Akiyama, Yoji Yamada, and Shogo Okamoto, "Rigid Material on Top of a Compliant Flooring Effectively Reduces the Impact Force In The Event of a Forward Fall,"
Proceedings of IEEE International Conference on Intelligence and Safety for Robotics, pp. 273-277, Shenyang, China, Aug, 2018
Xiaohan Xiang, Yoji Yamada, Yasuhiro Akiyama, Ziliang Tao, and Naoki Kudo, "Estimation of compressive force acting on human sacrum during dynamic condition,"
8th World Congress of Biomechanics, Dublin, Ireland, Jul. 2018
Yusuke Fukui, Yasuhiro Akiyama, Yoji Yamada, and Shogo Okamoto, "The change of gait motion when curving a corner owing to the motion restriction caused by a wearable device,"
Proceedings of IEEE International Conference on Systems, Man, and Cybernetics, pp. 525-530, Banff, Canada, Oct, 2017
[pdf]
Koichiro Ohashi, Yasuhiro Akiyama, Shogo Okamoto, and Yoji Yamada, "Development of a string-driven walking assist device powered by upper body muscles,"
Proceedings of IEEE International Conference on Systems, Man, and Cybernetics, pp. 1411-1416, Banff, Canada, Oct, 2017
[pdf]
Takuzo Kimura, Shogo Okamoto, Naomi Yamada, Yasuhiro Akiyama, Kaoru Isogai, and Yoji Yamada, "Ankle stretching rehabilitation machine for equinovarus: Automation of eversion and flexion control,"
Proceedings of IEEE International Conference on Systems, Man, and Cybernetics, pp. 2696-2700, Banff, Canada, Oct, 2017
[pdf]
Naomi Yamada, Shogo Okamoto, Yasuhiro Akiyama, Kaoru Isogai, and Yoji Yamada, "Ankle stretching rehabilitation machine for equinovarus: Design and evaluation from clinical aspects,"
Proceedings of IEEE International Conference on Systems, Man, and Cybernetics, pp. 1687-1692, Banff, Canada, Oct, 2017
[pdf]
Saeed Abdolshah, Yasuhiro Akiyama, Kento Mitsuoka, Yoji Yamada, and Shogo Okamoto, "Analysis of upper extremity motion during trip-induced falls,"
Proceedings of IEEE International Symposium on Robot and Human Interactive Communication, pp. 1485-1490, Lisbon, Portugal, Aug, 2017
[pdf]
Yoji Yamada, Mao Xuewei, Kengo Yoshida, Yasuhiro Akiyama, and Shogo Okamoto, "A verification method for testing abrasion in the use of restraint type personal care robots,"
Wearable Robotics: Challenges and Trends (Proceedings of WeRob), pp. 205-209, Segovia, Spain, Oct, 2016
Ryu Kubo, Ayaka Hirukawa, Shogo Okamoto, Naomi Yamada, Yasuhiro Akiyama, and Yoji Yamada, "Patient simulator using wearable robot to estimate the burden of knee-osteoarthritis patients during sitting-down and standing-up motions,"
Proceedings of IEEE International Conference on Systems, Man, and Cybernetics, pp. 2353-2358, Budapest, Hungary, Oct, 2016
[pdf]
Ryu Kubo, Shogo Okamoto, Shogo Nezaki, Naomi Yamada, Yasuhiro Akiyama, and Yoji Yamada, "Patient simulator using wearable robot: Representation of invariant sitting-down and standing-up motions of patients with knee-OA,"
Proceedings of Annual Conference of IEEE Industrial Electronics Society, pp. 4808-4813, Yokohama, Japan, Nov 2015
[pdf]
Yasuhiro Akiyama, Ryota Kushida, Yoji Yamada, and Shogo Okamoto, "An analysis of recovery motion of a man wearing physical assistant robot in response to collision,"
Proceedings of the 2015 IEEE International Conference on Systems, Man, and Cybernetics, pp. 1089-1093, Hong Kong, China, Oct, 2015
[pdf]
Kento Mitsuoka, Yasuhiro Akiyama, Yoji Yamada, and Shogo Okamoto, "Analysis of skip motion as a recovery strategy after an induced trip,"
Proceedings of the 2015 IEEE International Conference on Systems, Man, and Cybernetics, pp. 911-916, Hong Kong, China, Oct, 2015
[pdf]
Xuewei Mao, Yoji Yamada, Yasuhiro Akiyama, Shogo Okamoto, and Kengo Yoshida, "Development of a novel test method for skin safety verification of physical assistant robots,"
Proceedings of the 14th IEEE International Conference on Rehabilitation Robotics, pp. 319-324, Singapore, 12-Aug, 2015
Jessica Gabriela Beltran Ullauri, Yasuhiro Akiyama, Naomi Yamada, Shogo Okamoto, and Yoji Yamada, "Muscle activity restriction taping technique simulates the reduction in foot-ground clearance in the elderly,"
Proceedings of the 14th IEEE International Conference on Rehabilitation Robotics, pp. 559-564, Singapore, 12-Aug, 2015
Yasuhiro Akiyama, Ikuma Higo, Yoji Yamada, and Shogo Okamoto, "Analysis of recovering motion of human to prevent fall as induced by abnormality of a physical assistant robot,"
Proceedings of the 2014 IEEE International Conference on Robotics and Biomimetics, pp. 1493-1498, Bali, Indonesia, 14-Dec, 2014
[pdf]
Shun Ishikawa, Shogo Okamoto, Kaoru Isogai, Naomi Yamada, Yasuhiro Akiyama, Yujiro Kawasaki, and Yoji Yamada, "Wearable robot for simulating knee disorders in the training of manual examination techniques,"
Proceedings of Asia Haptics 2014, pp. 225-230, Tsukuba, Japan, 14-Nov, 2014
Hiroshi Okumura, Shogo Okamoto, Shun Ishikawa, Kaoru Isogai, Naomi Yanagihara-Yamada, Yasuhiro Akiyama, and Yoji Yamada, "Exoskeleton simulator for an impaired ankle: Simulation of spasticity and clonus,"
Proceedings of Asia Haptics 2014, pp. 209-214, Tsukuba, Japan, 14-Nov, 2014
Masaya Aso, Yoji Yamada, Kengo Yoshida, Yasuhiro Akiyama, Yasumi Ito, "Evaluation of the mechanical characteristics of human thighs for developing complex dummy tissues,"
Proceedings of IEEE International Conference on Robotics and Biomimetics, pp. 1450-1455, Shenzhen, China, 13-Dec, 2013
[pdf]
Yasuhiro Akiyama, "The Analysis of the Relationship between Motion Restraints Caused by Pressurized Suits and Risk of Falling,"
64 th International Astronautical Congress, IAC-13.A1.6.1, Beijing, China, 26-Sep, 2013
Yasuhiro Akiyama and Yoshifumi Inatani, "Construction of Sustainable Mars Logistics System -The Analysis of the Interplanetary Trajectory and the Effect of Stay Cycle-,"
The 29th International Symposium on Space Technology and Science, Nagoya, Japan, 4-Jun, 2013
Shun Ishikawa, Shogo Okamoto, Yasuhiro Akiyama, Kaoru Isogai, Yoji Yamada, and Susumu Hara, "Wearable Dummy to Simulate Joint Impairment: Model for the Discontinuous Friction Resistance Due to Arthritis,"
Proceedings of the 2012 IEEE International Conference on Robotics and Biomimetics, pp. 1409-1414, Guangzhou, China, 1-Dec, 2012
Yasuhiro Akiyama, Yoji Yamada, Koji Ito, Shiro Oda, Shogo Okamoto, and Susumu Hara, "Test Method for Contact Safety Assessment of a Wearable Robot - Analysis of Load Caused by a Misalignment of the Knee Joint -,"
Proceedings of the 21st IEEE International Symposium on Robot and Human Interactive Communication, pp. 539-544, Paris, France, 1-Sep, 2012
[pdf]
Yasuhiro Akiyama and Yoshifumi Inatani, "Construction of logistics network for future sustainable manned Mars exploration to reduce logistics risk,"
49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, AIAA-2011-331, Orlando, USA, Jan, 2011
Yasuhiro Akiyama and Yoshifumi Inatani, "Construction of Robust Supply Chain Network for Sustainable Mars Habitation,"
61st The International Astronautical Congress, IAC-10.D3.3.4, Prague, Czech, Sep, 2010
Yasuhiro Akiyama and Yoshifumi Inatani, "Importance of Transportation Cost for On-Orbit Servicing,"
59th The International Astronautical Congress, IAC-08.D1.1.1, Glasgow, England, Sep, 2008
Yasuhiro Akiyama and Yoshifumi Inatani, "Economic rationality of On-Orbit Servicing by reduction of transportation cost,"
the 26th International Symposium on Space Technology and Science, Hamamatsu, Japan, Jun, 2008