Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Hiroki Ishizuka"'
Publikováno v:
IEEE Access, Vol 11, Pp 101155-101166 (2023)
In this work, we propose a new approach to tactile research using natural language processing of archival word corpus as the database. Tactile perception, or assessment of surfaces, is recognized as a language. Thus, by extracting touch-related words
Externí odkaz:
https://doaj.org/article/8291391b45b048c8936b6a4d58cf80ed
Publikováno v:
IEEE Access, Vol 10, Pp 118736-118746 (2022)
In this study, we propose a countermeasure against a presentation attack on a photoplethysmogram (PPG)-based biometric authentication system. The countermeasure detects fake PPG signals by identifying PPG measurement sites on the body based on the di
Externí odkaz:
https://doaj.org/article/bc5017d43d344e92acc25fc77636b139
Publikováno v:
IEEE Access, Vol 10, Pp 41352-41361 (2022)
In this study, we examined information leakage in photoplethysmogram (PPG)-based biometric authentication and assessed an attack against authentication based on the information leakage. Several approaches have been proposed to apply PPG to biometric
Externí odkaz:
https://doaj.org/article/9f13fe377fc9449487dda187d9fcd072
Autor:
Ryusei Uramune, Hiroki Ishizuka, Takefumi Hiraki, Yoshihiro Kawahara, Sei Ikeda, Osamu Oshiro
Publikováno v:
IEEE Access, Vol 10, Pp 16830-16842 (2022)
Wearable haptic displays can provide haptic information while allowing for free body movement. Among these haptic displays, pneumatic haptic displays have the advantages of flexibility and lightweight; however, they require bulky air tubes and a heav
Externí odkaz:
https://doaj.org/article/c4c8c4d16240416a88788e15fe939b8c
Publikováno v:
Actuators, Vol 12, Iss 2, p 51 (2023)
In this paper, we propose and demonstrate a haptic device with liquid-pouch motors that can simulate a handshake. Because handshakes involve contact of the palms or soft skin, handshake simulation requires the haptic device to provide pressure onto s
Externí odkaz:
https://doaj.org/article/9745e562183b43c3b73f17f237f84a9c
Autor:
Shunsuke Yoshimoto, Naoki Ikemoto, Hiroki Ishizuka, Sei Ikeda, Yoshihiro Kuroda, Osamu Oshiro
Publikováno v:
IEEE Access, Vol 8, Pp 205778-205787 (2020)
Bioelectrical impedance method is useful for evaluating tissue state such as muscle injury but there is a trade off between efficiency and robustness in detection of various local impedance changes. To solve this problem, we proposed a method using c
Externí odkaz:
https://doaj.org/article/d3328bf9654e4872bed20a76e039dc31
Publikováno v:
Sensors, Vol 22, Iss 14, p 5299 (2022)
Deducing the input signal for a tactile display to present the target surface (i.e., solving the inverse problem for tactile displays) is challenging. We proposed the encoding and presentation (EP) method in our prior work, where we encoded the targe
Externí odkaz:
https://doaj.org/article/66409ec5fb624b458854fdc2d2734ddf
Publikováno v:
Micromachines, Vol 12, Iss 3, p 313 (2021)
Unlike tactile displays that use mechanical actuators, electrode-type tactile displays can be easily integrated and miniaturized because they consist of electrodes and insulators. Electrical tactile displays only require electrodes and use an electri
Externí odkaz:
https://doaj.org/article/a40caeef5c5c4ba382b040fd48b73dd5
Autor:
Hiroki ISHIZUKA, Norihisa MIKI
Publikováno v:
Mechanical Engineering Journal, Vol 5, Iss 1, Pp 17-00383-17-00383 (2017)
We herein propose a liquid encapsulation method for a submillimeter-size polydimethylsiloxane (PDMS) membrane. We selected a magnetorheological (MR) fluid as the liquid to be encapsulated in the membrane, the stiffness of which is tuned by an externa
Externí odkaz:
https://doaj.org/article/05dea35619424dac95893adfcd3725c8
Publikováno v:
Micromachines, Vol 10, Iss 5, p 301 (2019)
Tactile displays have been widely studied for many decades. Although multiple tactile stimuli are more effective to improve the quality of the presented tactile sensation, most tactile displays provide a single tactile stimulus. An integrated tactile
Externí odkaz:
https://doaj.org/article/97bfb84cab1f41ed9ce454a2134ae129