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32 results on '"Hirano, Ryo"'

7. Evaluation of System Engineers’ Intellectual Productivity : Focusing on Coding Procedures in Application Development Tools

Author

Hirano, Ryo, Nakamura, Yohei, Nakanishi, Miwa, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, and Yamamoto, Sakae, editor

Published
2013
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11. Intrusion detection and prevention system for FlexRay against spoofed frame injection

Author

Kishikawa, Takeshi, Hirano, Ryo, Ujiie, Yoshihiro, Haga, Tomoyuki, Matsushima, Hideki, Fujimura, Kazuya, and Anzai, Jun

Subjects
ComputingMilieux_MANAGEMENTOFCOMPUTINGANDINFORMATIONSYSTEMS, ComputerSystemsOrganization_SPECIAL-PURPOSEANDAPPLICATION-BASEDSYSTEMS, ComputerApplications_COMPUTERSINOTHERSYSTEMS, ddc:004, 004 Informatik
Abstract

Some European original equipment manufacturers (OEMs) have adopted FlexRay as a control network that can realize the fundamental functions of a vehicle. However, studies regarding FlexRay security are scarce. We herein highlight the vulnerability of FlexRay revealed from the results of experiments conducted on real FlexRay networks. Consequently, we clarify the conditions under which attackers can masquerade as legitimate electronic control units and transmit spoofed FlexRay frames. To our knowledge, this is the first study that demonstrates a consumer vehicle being controlled by spoofing attacks in static segments. Furthermore, we discuss countermeasures against spoofing attacks on FlexRay. In particular, we discuss the intrusion detection and prevention system (IDPS), which detects spoofing attacks and mitigates the risk of malicious control of a vehicle until recovery. Furthermore, we conduct experiments to verify the feasibility of the proposed IDPSs in disabling spoofed frames.

Published
2019
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14. Embedding Lemmas for Functional Encryption

Author

Kato, Ryo, primary, Nishida, Naohisa, additional, Hirano, Ryo, additional, Oba, Tatusmi, additional, Unagami, Yuji, additional, Yamada, Shota, additional, Teruya, Tadanori, additional, Attrapadung, Nuttapong, additional, Matsuda, Takahiro, additional, and Hanaoka, Goichiro, additional

Published
2018
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29. 'Manualization' in School Education: Comparing Manual and Kata

Author

オオゼキ,タツヤ, ヨシクニ,ヒデト, ヒラノ,リョウ, タニグチ,サチコ, オノ,タロウ, キクチ,カン, ヒョウ,キ, OZEKI,Tatsuya, YOSHIKUNI,Hideto, HIRANO,Ryo, TANIGUCHI,Sachiko, ONO,Taro, KIKUCHI,Kan, and HYO,Ki

Subjects
マニュアル, 主体的・対話的で深い学び, Kata, school education, 型, 学校教育, manual, proactive, interactive, and authentic learning
Published
2020

32. Biomechanics of C2C12 Cells Observed with Cellular Resolution Scanning Acoustic Microscope Combined with Optical Microscope .

Author

Hirano R, Kanzaki M, Arakawa M, Hermawan N, Kobayashi K, and Saijo Y

Subjects
Acoustics, Animals, Cell Physiological Phenomena, Elastic Modulus, Mice, Myoblasts, Microscopy, Acoustic, Sound
Abstract

Biomechanics of the cell indicates the inner structure and viability of the cell. Mechanical properties are represented by acoustic properties such as speed of sound (SOS) or acoustic impedance. In the present study, cellular resolution scanning acoustic microscope combined with optical microscope (OptSAM) is developed to observe the change of mechanical properties in cell differentiation. Main part of the OptSAM was consisted of 350 MHz ultrasound transducer mechanically scanned by a piezo-actuator. Thickness, SOS, acoustic impedance, density and elastic bulk modulus of the cell were deduced by the ultrasound responses in both time domain and frequency domain. C2C12 cell changing its form from myoblast to myotube was observed by OptSAM. The value of bulk modulus slightly increased in response to differentiation process. OptSAM non-invasively provides important information on biomechanics of cells without contact or staining.

Published
2019
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