Organization
School of Engineering Associate Professor
Title
Associate Professor
External link
AOYAGI TAKAHIRO
Degree
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Doctor of Engineering ( Tokyo Institute of Technology )
Research Interests
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Noise
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EMC
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雑音・ＥＭＣ
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教育工学
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Educational Engineering
Research Areas
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Nanotechnology/Materials / Applied condensed matter physics
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Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Communication and network engineering
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Humanities & Social Sciences / Educational technology
Education
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東京工業大学大学院 理工学研究科 電気・電子工学専攻
- 1998
Country： Japan
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Tokyo Institute of Technology Graduate School, Division of Science and Engineering
- 1998
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Tokyo Institute of Technology School of Engineering
- 1993
Country： Japan
Research History
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-:Tokyo Institute of Technology Center for Research and Development of Educational Technology Assistant Professor
2001
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-:東京工業大学 教育工学開発センター 助手
2001
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:Tokyo Institute of Technology School of Engineering Assistant Professor
1998 - 1999
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:東京工業大学 工学部 助手
1998 - 1999
Professional Memberships
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IEEE (The Institute of Electrical and Electronics Engineering)
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Information and Communication Engineers
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The Acoustical Society of Japan
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日本建築学会
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The Institute of Electronics
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IEEE (The Institute of Electrical and Electronics Engineering)
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Architectual Institute of Japan
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Japan Society for Educational Technology
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Japa Society of Applied Physics
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電子情報通信学会
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日本音響学会
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日本教育工学会
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応用物理学会
Committee Memberships
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電子情報通信学会 高信頼性ヘルスケアサービス実現のための情報通信技術小特集号(英文論文誌B)幹事、医療情報通信技術時限研究専門委員会幹事、衛星通信実験とその応用技術論文特集号(和文論文誌B)編集委員、福祉と医療応用のための情報通信技術小特集号（ICT-WM, 英文論文誌B）編集委員、衛星通信研究会専門委員、無線通信を支えるマイクロ波・ミリ波高機能材料とその関連技術特集号（和文論文誌C）編集委員、ソサイエティ論文誌編集委員会査読委員
2009 - 2010
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The Institute of Electronics, Information and Communication Engineers Guest Editor, Special Section on Information Communication Technology for Highly Reliable Human Health Care Services、Secretary, Technical Committee on Medical Information and Communication Technology、Special Section Editorial Committee, Special Sectio・・・
2009 - 2010
Committee type：Academic society
Guest Editor, Special Section on Information Communication Technology for Highly Reliable Human Health Care Services、Secretary, Technical Committee on Medical Information and Communication Technology、Special Section Editorial Committee, Special Section on Information and Communication Technology for Wellness and Medical Applications, Transactions on Communications、Technical Committee of Satellite Communications Member
The Institute of Electronics, Information and Communication Engineers -
日本音響学会 2009年春季研究発表会実行委員会
2008
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日本建築学会 電波吸収体とその応用小委員会 委員
2005
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日本教育工学会 第20回全国大会実行委員
2004
Papers
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Human-movement identification using the radio signal strength in WBAN
Sukhumarn Archasantisuk, Takahiro Aoyagi, Tero Uusitupa, Minseok Kim, Jun-Ichi Takada
Wearable Technologies and Wireless Body Sensor Networks for Healthcare 185 - 209 2019.1
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Transmission power control using human motion classification for reliable and energy-efficient communication in WBAN
Sukhumarn Archasantisuk, Takahiro Aoyagi
IEICE Transactions on Communications E102B ( 6 ) 1104 - 1112 2019
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Temporal correlation model-based transmission power control in wireless body area network Reviewed
Sukhumarn Archasantisuk, Takahiro Aoyagi, Minseok Kim, Jun-ichi Takada
IET Wireless Sensor Systems 8 ( 2 ) 191 - 199 2018.4
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Development of broadband parametric permittivity model of dielectric absorbing material for time-domain electromagnetic wave simulation
Kosorl Thourn, Takahiro Aoyagi, Jun-ichi Takada
IEEJ Transactions on Fundamentals and Materials 138 ( 6 ) 302 - 308 2018
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Antenna Deembedding in WBAN Channel Modeling Using Spherical Wave Functions Reviewed
Jun-ichi Naganawa, Jun-ichi Takada, Takahiro Aoyagi, Minseok Kim
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION 65 ( 3 ) 1289 - 1300 2017.3
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Human Motion Classification Using Radio Signal Strength in WBAN
ARCHASANTISUK Sukhumarn, AOYAGI Takahiro, UUSITUPA Tero, KIM Minseok, TAKADA Jun-ichi
IEICE Transactions on Communications 99 ( 3 ) 592 - 601 2016
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Transmission Power Control in WBAN Using the Context-Specific Temporal Correlation Model Reviewed
Sukhumarn Archasantisuk, Takahiro Aoyagi, Minseok Kim, Jun-ichi Takada
2016 IEEE 27TH ANNUAL INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR, AND MOBILE RADIO COMMUNICATIONS (PIMRC) 1907 - 1912 2016
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Simultaneous measurement of ultrasonic echo and electromyogram to monitor muscle state Reviewed
Marie Tabaru, Takahiro Aoyagi
2016 IEEE ASIA-PACIFIC CONFERENCE ON APPLIED ELECTROMAGNETICS (APACE) 2016
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Measurement of permittivity of human abdomen by penetrate wave guide method
Aoyagi Takahiro
Transactions of Japanese Society for Medical and Biological Engineering 54 ( 28 ) S261 - S261 2016
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Development of Simultaneous Measurement System of MIMO Channel Response and Body Posture for Study of Dynamic WBAN Channel
Chen Gaochao, Takada Jun-Ichi, Saito Kentaro, Kim Minseok, Aoyagi Takahiro
Transactions of Japanese Society for Medical and Biological Engineering 54 ( 26 ) S79 - S79 2016
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Geometrical Modeling of Shadowing Between On-body Nodes and Off-body Antennas During Various Human Movements in WBAN Reviewed
Takahiro Aoyagi, Jun-ichi Takada, Minseok Kim
2016 10TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP) 2016
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Antenna De-embedding in WBAN Channel Modeling using Spherical Wave Functions: Transmit Antenna Model Validation Reviewed
Jun-ichi Naganawa, Jun-ichi Takada, Takahiro Aoyagi, Minseok Kim
2016 10TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP) 2016
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Antenna De-embedding in FDTD-based Radio Propagation Prediction by using Spherical Wave Function Reviewed
Jun-ichi Naganawa, Katsuyuki Haneda, Minseok Kim, Takahiro Aoyagi, Jun-ichi Takada
IEEE Transactions on Antennas and Propagation 63 ( 6 ) 2545 - 2557 2015.6
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Simulation-based Scenario-Specific Channel Modeling for WBAN Cooperative Transmission Scheme Reviewed
Jun-ichi Naganawa, Karma Wangchuk, Minseok Kim, Takahiro Aoyagi, Jun-ichi Takada
IEEE Journals of Biomedical and Health Informatics 19 ( 2 ) 559 - 570 2015.3
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100-MHz ultrasonic linear array transducers based on polyurea-film Reviewed
Marie Nakazawa, Masaya Tabaru, Toshiki Takayasu, Takahiro Aoyagi, Kentaro Nakamura
Acoustical Science and Technology 36 ( 2 ) 139 - 148 2015
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Accuracy of Approximated WBAN Channel by Fundamental Modes of Spherical Wave Functions Reviewed
Jun-ichi Naganawa, Jun-ichi Takada, Takahiro Aoyagi, Minseok Kim
2015 9TH INTERNATIONAL SYMPOSIUM ON MEDICAL INFORMATION AND COMMUNICATION TECHNOLOGY (ISMICT) 25 - 29 2015
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Experimental study of underwater transmission characteristics of high-frequency 30 MHz polyurea ultrasonic transducer Reviewed
Marie Nakazawa, Takahiro Aoyagi, Masaya Tabaru, Kentaro Nakamura, Sadayuki Ueha
ULTRASONICS 54 ( 2 ) 526 - 536 2014.2
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FDTD-based Antenna De-embedding in WBAN on-body Channel Modeling Reviewed
Jun-ichi Naganawa, Minseok Kim, Takahiro Aoyagi, Jun-ichi Takada
2014 XXXITH URSI GENERAL ASSEMBLY AND SCIENTIFIC SYMPOSIUM (URSI GASS) 2014
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Thickness Design, Fabrication, and Evaluation of 100-MHz Polyurea Ultrasonic Transducer Reviewed
Marie Nakazawa, Masaya Tabaru, Takahiro Aoyagi, Kentaro Nakamura, Sadayuki Ueha
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL 60 ( 10 ) 2175 - 2188 2013.10
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Voxel Model Construction by Kinect for Propagation Channel Simulation Reviewed
Akinori Fujie, Jun-ichi Naganawa, Minseok Kim, Takahiro Aoyagi, Jun-ichi Takada
2013 7TH INTERNATIONAL SYMPOSIUM ON MEDICAL INFORMATION AND COMMUNICATION TECHNOLOGY (ISMICT) 164 - 168 2013
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Propagation characteristics for 2.45 GHz dynamic wearable WBAN using multiport VNA Reviewed
Takahiro Aoyagi, Jun-Ichi Takada, Kenichi Takizawa, Kamya Y. Yazdandoost, Huan-Bang Li, Marco Hernandez, Kiyoshi Hamaguchi, Ryu Miura, Takehiko Kobayashi, Ryuji Kohno
2012 6th International Symposium on Medical Information and Communication Technology, ISMICT 2012 2012
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Channel modelling and performance evaluation of UWB-based wireless body area networks Reviewed
Kenichi Takizawa, Takahiro Aoyagi, Kiyoshi Hamaguchi, Ryuji Kohno
International Journal of Ultra Wideband Communications and Systems 2 ( 3 ) 125 - 132 2012
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The utilization of body skeleton model for modeling the dynamic BAN channels Reviewed
Iswandi, Takahiro Aoyagi, Minseok Kim, Junichi Takada
Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012 540 - 543 2012
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Numerical Simulations for Wearable BAN Propagation Channel during Various Human Movements Reviewed
Takahiro Aoyagi, Minseok Kim, Jun-ichi Takada, Kiyoshi Hamaguchi, Ryuji Kohno
IEICE TRANSACTIONS ON COMMUNICATIONS E94B ( 9 ) 2496 - 2500 2011.9
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Numerical simulations for dynamic WBAN propagation channel during various human movements Reviewed
Takahiro Aoyagi, Minseok Kim, Jun-Ichi Takada, Kiyoshi Hamaguchi, Ryuji Kohno
2011 5th International Symposium on Medical Information and Communication Technology, ISMICT 2011 65 - 69 2011
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Body motion and channel response of dynamic body area channel
Takahiro Aoyagi, Iswandi, Minseok Kim, Jun-Ichi Takada, Kiyoshi Hamaguchi, Ryuji Kohno
Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011 3138 - 3142 2011
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Study of signal propagations at 2.45GHz for wireless BAN applications Reviewed
Grace H.H. Sung, Takahiro Aoyagi, Kiyoshi Hamaguchi, Ryuji Kohno
IEEE International Symposium on Spread Spectrum Techniques and Applications 108 - 111 2010
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Reasons for time-varying fading of dynamic on-body channels Reviewed
Bin Zhen, Takahiro Aoyagi, Ryuji Kohno
2010 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC 2010) 2010
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Utilizing Electromagnetic Shielding Textiles in Wireless Body Area Networks Reviewed
Grace H. H. Sung, Takahiro Aoyagi, Marco Hernandez, Kiyoshi Hamaguchi, Ryuji Kohno
2010 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC) 696 - 699 2010
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A body surface coordinator for implanted biosensor networks Reviewed
Bin Zhen, Kenichi Takizawa, Takahiro Aoyagi, Ryuji Kohno
2009 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-8 475 - 479 2009
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Performance Evaluation of Wireless Communications through Capsule Endoscope Reviewed
Kenichi Takizawa, Takahiro Aoyagi, Kiyoshi Hamaguchi, Ryuji Kohno
2009 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-20 6897 - 6900 2009
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Path Loss and Power Delay Profile Channel Models for Wireless Body Area Networks Reviewed
Kenichi Takizawa, Takahiro Aoyagi, Huan-Bang Li, Jun-ichi Takada, Takehiko Kobayashi, Ryuji Kohno
2009 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM AND USNC/URSI NATIONAL RADIO SCIENCE MEETING, VOLS 1-6 2659 - + 2009
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Dynamic on-body channel and its ARQ error control Reviewed
Bin Zhen, Takahiro Aoyagi, Ryuji Kohno
2009 6TH INTERNATIONAL SYMPOSIUM ON WIRELESS COMMUNICATION SYSTEMS (ISWCS 2009) 560 - + 2009
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Channel Modeling and Performance Evaluation of UWB-based Wireless Body Area Networks Reviewed
Kenichi Takizawa, Takahiro Aoyagi, Ryuji Kohno
2009 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-8 4218 - 4222 2009
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Channel modeling and performance evaluation of UWB-based wireless body area networks Reviewed
Kenichi Takizawa, Takahiro Aoyagi, Ryuji Kohno
IEEE International Conference on Communications 2009
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Development of a WBAN Channel Model for Capsule Endoscopy Reviewed
Takahiro Aoyagi, Kenichi Takizawa, Takehiko Kobayashi, Jun-ichi Takada, Ryuji Kohno
2009 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM AND USNC/URSI NATIONAL RADIO SCIENCE MEETING, VOLS 1-6 2651 - + 2009
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A body surface coordinator for implanted biosensor networks Reviewed
Bin Zhen, Kenichi Takizawa, Takahiro Aoyagi, Ryuji Kohno
IEEE International Conference on Communications 2009
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Channel Model on Various Frequency Bands for Wearable Body Area Network Reviewed
Norihiko Katayama, Kenichi Takizawa, Takahiro Aoyagi, Jun-ichi Takada, Huan-Bang Li, Ryuji Kohno
ISABEL: 2008 FIRST INTERNATIONAL SYMPOSIUM ON APPLIED SCIENCES IN BIOMEDICAL AND COMMMUNICATION TECHNOLOGIES 41 - 45 2008
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Channel Models for Wireless Body Area Networks Reviewed
Kenichi Takizawa, Takahiro Aoyagi, Jun-ichi Takada, Norihiko Katayama, Kamya Yekeh Yazdandoost, Takehiko Kobayashi, Ryuji Kohno
2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Vols 1-8 1549 - 1552 2008
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Designing multi-layer wave-absorber for oblique incident by point frequency matching method
Takahiro Aoyagi, Yasutaka Shimizu
IEEE International Symposium on Electromagnetic Compatibility 491 - 494 1994
Books
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建築における電波吸収体とその応用
三松株式会社 2007
MISC
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ARCHASANTISUK Sukhumarn, AOYAGI Takahiro, KIM Minseok, TAKADA Jun-ichi
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116 ( 141 ) 19 - 22 2016.7
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ARCHASANTISUK Sukhumarn, AOYAGI Takahiro, KIM Minseok, TAKADA Jun-ichi
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116 ( 140 ) 19 - 22 2016.7
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BI-2-7 Noise suppression sheet as viewed from user side
Aoyagi Takahiro
Proceedings of the IEICE General Conference 2016 ( 1 ) "SS - 64" 2016.3
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1P2-1 Detection of Human Motion Using Ultrasonic Sing-Around Method
Tabaru Marie, Aoyagi Takahiro, Nakamura Kentaro
Proceedings of Symposium on Ultrasonic Electronics 36 "1P2 - 1-1"-"1P2-1-2" 2015.11
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1P2-2 Preliminary experimental channel modeling for airborne ultrasonic wave propagation of WBAN
Aoyagi Takahiro, Tabaru Marie, Nakamura Kentaro
Proceedings of Symposium on Ultrasonic Electronics 36 "1P2 - 2-1"-"1P2-2-2" 2015.11
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Development and evaluation of flying disc throwing motion analysis system using a motion sensor
YAMAOKA Koji, AOYAGI Takahiro
IEICE technical report. MICT, Healthcare and medical information communication technology 114 ( 270 ) 19 - 23 2014.10
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TABARU Marie, AOYAGI Takahiro, NAKAMURA Kentaro
IEICE technical report. WBS, Wideband System 114 ( 158 ) 117 - 120 2014.7
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Arrangement of 2.4 GHz WBAN antenna with consideration of human walking movement
YAJIMA Kazuki, AOYAGI Takahiro, KIM Minseok, TAKADA Jun-ichi
IEICE technical report. RCC, Reliable communication and control 114 ( 60 ) 5 - 8 2014.5
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AOYAGI Takahiro, KURIHARA Hiroshi, TAKIZAWA Koji, HIRAI Yoshihito
IEICE technical report. Electromagnetic compatibility 114 ( 15 ) 25 - 29 2014.4
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BS-5-2 Directional characteristics of shadowings of antennas on human body from externel systems during walking in WBAN
Aoyagi Takahiro, Kim Minseok, Takada Jun-ichi
Proceedings of the IEICE General Conference 2014 ( 2 ) "S - 171" 2014.3
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B-1-37 Accuracy Evaluation on Antenna De-embedding in FDTD-based Propagation Prediction
Naganawa Jun-ichi, Haneda Katsuyuki, Kim Minseok, Aoyagi Takahiro, Takada Jun-ichi
Proceedings of the IEICE General Conference 2014 ( 1 ) 37 - 37 2014.3
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B-3-33 Statistical modeling of interferences on other communication satellites by diffracted waves from a ship body in maritime mobile broadband communications
Aoyagi Takahiro, Suzaki Kouhei, Sugiyama Takatoshi
Proceedings of the IEICE General Conference 2014 ( 1 ) 332 - 332 2014.3
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B-4-19 Estimation of 10m-range Electric Field Strength Applying Image of Near-field by Ground Plane
Midori Masataka, Kurihara Hiroshi, Aoyagi Takahiro
Proceedings of the IEICE General Conference 2014 ( 1 ) 357 - 357 2014.3
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AOYAGI Takahiro, SUZAKI Kouhei, SUGIYAMA Takatoshi
Technical report of IEICE. SAT 113 ( 436 ) 17 - 21 2014.2
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1P2-4 PIV analysis of Acoustic Streaming Generated by a Polyurea Ultrasonic Transducer(Poster Session)
Aoyagi Takahiro, Nakazawa Marie, Tabaru Masaya, Nakamura Kentaro
Proceedings of Symposium on Ultrasonic Electronics 34 43 - 44 2013.11
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BS-9-16 Human Movement Classification for Body Area Networks using Signal Level Fluctuation via Neural Network
Sukhumarn Archasantisuk, Aoyagi Takahiro
Proceedings of the Society Conference of IEICE 2013 ( 2 ) "S - 167"-"S-168" 2013.9
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Preliminary Study on Antenna De-embedding in Propagation Simulation using FDTD Method
Naganawa Jun-ichi, Haneda Katsuyuki, Kim Minseok, Aoyagi Takahiro, Takada Jun-ichi
Proceedings of the Society Conference of IEICE 2013 ( 1 ) 5 - 5 2013.9
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A Study on Estimation of 10m-range Electric Field Strength by Near-field Measurement
Midori Nasataka, Kurihara Hiroshi, Aoyagi Takahiro
Proceedings of the Society Conference of IEICE 2013 ( 1 ) 321 - 321 2013.9
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Modeling of effects on other communication satellites by diffracted waves from a ship body for maritime mobile broadband communications
Aoyagi Takahiro, Suzaki Kouhei, Sugiyama Takatoshi
Proceedings of the Society Conference of IEICE 2013 ( 1 ) 289 - 289 2013.9
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MIDORI Masataka, KURIHARA Hiroshi, AOYAGI Takahiro
IEICE technical report. Electromagnetic compatibility 113 ( 25 ) 7 - 12 2013.5
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B-1-52 Excitation of Spherical Wave in FDTD Method for Propagation Simulation
Naganawa Jun-ichi, Haneda Katsuyuki, Aoyagi Takahiro, Kim Minseok, Takada Jun-ichi
Proceedings of the IEICE General Conference 2013 ( 1 ) 52 - 52 2013.3
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B-4-7 Refelection coefficients of a pyramidal electromagnetic wave absorber for deep incident angles
Aoyagi Takahiro, Kurihara Hiroshi, Takizawa Koji
Proceedings of the IEICE General Conference 2013 ( 1 ) 352 - 352 2013.3
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AOYAGI Takahiro, SUZAKI Kouhei, SUZUKI Yoshinori, HIROSE Takashi, SUGIYAMA Takatoshi
Technical report of IEICE. SAT 112 ( 440 ) 41 - 46 2013.2
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B-3-19 Effects on other communication antennas by scattered waves from a ship body for maritime mobile broadband communications
Aoyagi Takahiro, Suzaki Kouhei, Suzuki Yoshinori, Hirose Takashi, Sugiyama Takatoshi
Proceedings of the Society Conference of IEICE 2012 ( 1 ) 286 - 286 2012.8
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Freqency characteristics of diffraction coefficients of a pyramidal wave electromagnetic absorber for simulation of SVSWR
Aoyagi Takahiro, Kurihara Hiroshi, Takizawa Koji
Proceedings of the IEICE General Conference 2012 ( 1 ) 384 - 384 2012.3
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AOYAGI Takahiro, KURIHARA Hiroshi, TAKIZAWA Koji
IEICE technical report. Electromagnetic compatibility 111 ( 335 ) 19 - 22 2011.12
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In vivo Measurement of Equivalent Complex Permittivity of Fingers Using the Waveguide-Penetration Method
HAMAJI Tomoki, KIK Alfred, AOYAGI Takahiro, NISHIKATA Atsuhiro, WATANABE Soichi
The transactions of the Institute of Electronics, Information and Communication Engineers. B 94 ( 11 ) 1503 - 1507 2011.11
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Performance Evaluation of Wireless Communications for Capsule Endoscopy
TAKIZAWA Kenichi, AOYAGI Takahiro, HAMAGUCHI Kiyoshi
94 ( 9 ) 2488 - 2491 2011.9
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B-4-53 Simulation of SVSWR with consideration of diffracted wave of pyramidal electromagnetic wave absorber
Aoyagi Takahiro, Kurihara Hiroshi, Takizawa Koji
Proceedings of the Society Conference of IEICE 2011 ( 1 ) 366 - 366 2011.8
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AOYAGI Takahiro, KURIHARA Hiroshi, TAKIZAWA Koji
IEICE technical report 111 ( 66 ) 9 - 12 2011.5
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B-4-68 Simulation for estimating the effect of diffracted wave from pylamidal electromagnetic wave absorber on SVSWR
Aoyagi Takahiro, Kurihara Hiroshi, Takizawa Koji
Proceedings of the IEICE General Conference 2011 ( 1 ) 381 - 381 2011.2
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AOYAGI Takahiro, HAMAJI Tomoki, NISHIKATA Atsuhiro, WATANABE Souichi
IEICE technical report 110 ( 300 ) 67 - 70 2010.11
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HAMAJI Tomoki, AOYAGI Takahiro, NISHIKATA Atsuhiro, WATANABE Soichi
IEICE technical report 110 ( 300 ) 61 - 65 2010.11
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BS-10-10 Numerical Simulation for Dynamic Wearable WBAN Propagation Channel of Various Human Movevments
Aoyagi Takahiro, Kim Minseok, Takada Jun-ichi, Hamaguchi Kiyoshi, Kohno Ryuji
Proceedings of the Society Conference of IEICE 2010 ( 1 ) "S - 73"-"S-74" 2010.8
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Equivalent circuit analysis and design of multilayered polyurea ultrasonic transducers
Takahiro Aoyagi, Daisuke Koyama, Kentaro Nakamura, Marie Tabaru
Japanese Journal of Applied Physics 49 ( 7 ) 07HD05 2010.7
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Development of an Implantable WBAN Path-Loss Model for Capsule Endoscopy
Takahiro Aoyagi, Kenichi Takizawa, Takehiko Kobayashi, Jun-ichi Takada, Kiyoshi Hamaguchi, Ryuji Kohno
IEICE TRANSACTIONS ON COMMUNICATIONS E93B ( 4 ) 846 - 849 2010.4
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B-1-32 Numerical Simulation of a Dynamic Wearable WBAN Propagation Channel with Human Motions
Aoyagi Takahiro, Hamaguchi Kiyoshi, Kohno Ryuji
Proceedings of the IEICE General Conference 2010 ( 1 ) 32 - 32 2010.3
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B-4-28 Analysis for EM-wave Abosrber Composed of Loop Array and Circuit-Theory-based Derivation of Matching condition
Yamaguchi Tatsuya, Nishikata Atsuhiro, Aoyagi Takahiro, Kotsuka Youji
Proceedings of the IEICE General Conference 2010 ( 1 ) 378 - 378 2010.3
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B-4-3 Electromagnetic loss calculation of a human finger model with line wave source using dielectric constants measured by waveguide penetration method
Aoyagi Takahiro, Nishikata Atsuhiro, Hamaji Tomoki
Proceedings of the Society Conference of IEICE 306 - 306 2010
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青柳貴洋
超音波テクノ 22 ( 1 ) 10 - 13 2010
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EM-wave Absorbers Based on Active-device-embedded Metamaterials and Their Possible Applications to Wireless Communications
Atsuhiro Nishikata, TAKAHIRO AOYAGI
The Journal of the Institute of Electronics, Information and Communication Engineers 93 ( 6 ) 463 - 467 2010
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Equivalent Circuit Analysis and Design of Multilayered Polyurea Ultrasonic Transducers
Takahiro Aoyagi, Daisuke Koyama, Kentaro Nakamura, Marie Tabaru
JAPANESE JOURNAL OF APPLIED PHYSICS 49 ( 7 ) 07HD05 2010
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能動素子装荷メタマテリアルによる電波吸収体と通信応用への展望
西方敦博, 青柳貴洋, 村野公俊
電子情報通信学会誌 93 ( 6 ) 463 - 467 2010
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B-4-54 Investigation for the Calibration of Waveguide Penetration Method Using Standard Samples
Hamaji Tomoki, Nishikata Atsuhiro, Aoyagi Takahiro
Proceedings of the IEICE General Conference 404 - 404 2010
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B-4-26 Simulation of reflection coefficient measurements for pyramidal electromagnetic wave absorber with consideration of diffracted wave
Aoyagi Takahiro, Kurihara Hiroshi, Takizawa Koji
Proceedings of the IEICE General Conference 376 376 - 376 2010
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3P3-14 Equivalent Circuit Analysis of Efficiency Improvement in Multilayered Polyurea Ultrasonic Transducers(Poster Session)
Aoyagi Takahiro, Koyama Daisuke, Nakamura Kentaro, Tabaru Marie
Proceedings of Symposium on Ultrasonic Electronics 30 503 - 504 2009.11
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B-4-44 EM-wave Absorber using Artificial Magnetic Material Composed of Loop Array
NISHIKATA Atsuhiro, AOYAGI Takahiro, KOTSUKA Youji
Proceedings of the Society Conference of IEICE 2009 ( 1 ) 327 - 327 2009.9
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B-1-49 Simulation of Human Motions for Constructing the Dynamic Wearable WBAN Channel Model
Aoyagi Takahiro, Hamaguchi Kiyoshi, Kohno Ryuji
Proceedings of the Society Conference of IEICE 2009 ( 1 ) 49 - 49 2009.9
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Measurement of Surface Acoustic Wave Velocity Using a Variable-Line-Focus Polyurea Thin-Film Ultrasonic Transducer
Takahiro Aoyagi, Marie Nakazawa, Masaya Tabaru, Kentaro Nakamura, Sadayuki Ueha
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL 56 ( 8 ) 1761 - 1768 2009.8
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Theoretical Study for Diffracted Wave from Pyramidal Electromagnetic Wave Absorber
AOYAGI Takahiro, KURIHARA Hiroshi, TAKIZAWA Koji
IEICE technical report 109 ( 158 ) 133 - 136 2009.7
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BS-1-7 Construction of a WBAN Channel Model for Capsule Endoscopy
Aoyagi Takahiro, Takizawa Kenichi, Kobayashi Takehiko, Takada Jun-ichi, Kohno Ryuji
Proceedings of the IEICE General Conference 2009 ( 1 ) "S - 13"-"S-14" 2009.3
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BS-1-3 Wearable Channel Models Based on Measured Channel Responses by using Practical Antennas
Takizawa Kenichi, Aoyagi Takahiro, Li Huan-Bang, Takada Jun-ichi, Kobayashi Takehiko, Kohno Ryuji
Proceedings of the IEICE General Conference 2009 ( 1 ) "S - 5"-"S-6" 2009.3
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Channel Model on Various Frequency Bands for Wearable Body Area Network
Norihiko Katayama, Kenichi Takizawa, Takahiro Aoyagi, Jun-ichi Takada, Huan-Bang Li, Ryuji Kohno
IEICE TRANSACTIONS ON COMMUNICATIONS E92B ( 2 ) 418 - 424 2009.2
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B-4-12 Investigation for the Measurement of Complex Permittivity of Fingers around 800 MHz by Waveguide Penetration Method
Hamaji Tomoki, Nishikata Atsuhiro, Aoyagi Takahiro
Proceedings of the Society Conference of IEICE 295 - 295 2009
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1P2a-5 Frequency characteristics of the polyurea ultrasonic variable-line-focus-beam-transducer(Poster Session)
Aoyagi Takahiro, Nakazawa Marie, Nakamura Kentaro
Proceedings of Symposium on Ultrasonic Electronics 29 53 - 54 2008.11
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B-1-42 A Study on Channel Model for Wearable Body Area Network
KATAYAMA Norihiko, TAKIZAWA Kenichi, AOYAGI Takahiro, TAKADA Jun-ichi, Li Huan-Bang, KOHNO Ryuji
Proceedings of the Society Conference of IEICE 2008 ( 1 ) 42 - 42 2008.9
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Accuracy Investigation for Finger's Complex Permittivity Measurement System by Waveguide-Penetration Method
SAITO Hikaru, KOUZAI Masaki, AOYAGI Takahiro, NISHIKATA Atsuhiro, WATANABE Soichi
108 ( 145 ) 5 - 10 2008.7
-
Manufacturing and Measurement of Variably Matchable EM-wave Absorber
MIYAZAKI Ryo, NISHIKATA Atsuhiro, AOYAGI Takahiro, KOTSUKA Youji
IEICE technical report 108 ( 21 ) 7 - 12 2008.4
-
Investigation of Variably Matchable EM-wave Absorber using Varicap Diodes
TONG Daliang, NISHIKATA Atsuhiro, AOYAGI Takahiro, KOTSUKA Youji
IEICE technical report 108 ( 21 ) 1 - 6 2008.4
-
A-11-3 Measurement method of surface acoustic wave velocity using a polyurea ultrasonic variable-line-focus-transducer
Aoyagi Takahiro, Nakazawa Marie, Tabaru Masaya, Nakamura Kentaro, Ueha Sadayuki
Proceedings of the IEICE General Conference 2008 218 - 218 2008.3
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Wave absorber by using cylindrical bars with magnetic loss covers arranged metallic mesh for improving ETC environment
Kouta Matsumoto, Atsushi Kitamoto, Takuya Nakamura, Takahiro Aoyagi, Osamu Hashimoto, Takashi Miyamoto
IEICE TRANSACTIONS ON ELECTRONICS E91C ( 2 ) 220 - 223 2008.2
-
B-4-70 Investigation for the Measurement of Complex Permittivity of Fingers by Waveguide Penetration Method
Saitoh Hikaru, Kouzai Masaki, Aoyagi Takahiro, Nishikata Atsuhiro, Watanabe Soichi
Proceedings of the IEICE General Conference 379 - 379 2008
-
3-02-02 Measurements of surface acoustic wave velocity using a polyurea ultrasonic variable-line-focus-beam-transducer(Measurement techiniques, Nondestructive testing)
Aoyagi Takahiro, Nakazawa Marie, Tabaru Masaya, Nakamura Kentaro, Ueha Sadayuki
Proceedings of Symposium on Ultrasonic Electronics 28 353 - 354 2007.11
-
In vivo Measurement of Human Body's Complex Permittivity by Waveguide Penetration Method
SAITO Hikaru, KOUZAI Masaki, AOYAGI Takahiro, NISHIKATA Atsuhiro, WATANABE Soichi
IEICE technical report 107 ( 310 ) 41 - 44 2007.11
-
Numerical analysis of ultrasonic beam of variable-line-focus-beam film transducer
Takahiro Aoyagi, Marie Nakazawa, Kentaro Nakamura, Sadayuki Ueha
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS 46 ( 7B ) 4486 - 4489 2007.7
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Wave absorber formed by arranging cylindrical bars at intervals for installing between ETC lanes
Kouta Matsumoto, Takeru Ozawa, Takuya Nakamura, Takahiro Aoyagi, Osamu Hashimoto, Takashi Miyamoto
IEICE TRANSACTIONS ON ELECTRONICS E89C ( 11 ) 1700 - 1703 2006.11
-
A Study on Optimization of Wave Absorber Composed of Multiples Wires for ETC
OZAWA Takeru, NAKAMURA Takuya, MATSUMOTO Kouta, AOYAGI Takahiro, HASHIMOTO Osamu, MIYAMOTO Takashi
IEICE technical report 105 ( 368 ) 13 - 17 2005.10
-
B-4-13 Theoretical analysis for reduction of reflected wave from a metalic corner using wave absorber
Aoyagi Takahiro, Kurihara Hiroshi, Takizawa Koji
Proceedings of the Society Conference of IEICE 2005 ( 1 ) 337 - 337 2005.9
-
AOYAGI Takahiro, NISHIKATA Atsuhiro, SAITO Akihiko
IEICE technical report. Electromagnetic compatibility 105 ( 81 ) 1 - 6 2005.5
-
自由空間法の測定における基準金属板の湾曲の影響の理論的・実験的検討
青柳貴洋, 齋藤章彦, 西方敦博
電子情報通信学会論文誌B J88-B ( 8 ) 1539 - 1548 2005
-
Development of Magnetic Wave Absorber Pavement Material for Electronic Toll Collection
Akihiko Saito, Takahiro Aoyagi, Takeshi Kunishima
Electric Furnace Steel 76 ( 3 ) 181 - 186 2005
-
Theoretical and Experimental Study for the Influence of the Reference Plate Curvature in Free Space Method
Takahiro Aoyagi, Akihiko Saito, Atsuhiro Nishikata
J88-B ( 8 ) 1539 - 1548 2005
-
磁性材料を用いたEMC技術動向
青柳貴洋
電気製鋼 76 ( 3 ) 203 - 207 2005
-
Latest EMC Technology Using Magnetic Materials
Takahiro Aoyagi
Electric Furnace Steel 76 ( 3 ) 203 - 207 2005
-
Development of Magnetic Wave Absorber Pavement Material for Electronic Toll Collection
Saito Akihiko, Aoyagi Takahiro, Kunishima Takeshi
DENKI-SEIKO 76 ( 3 ) 181 - 186 2005
-
High Schools and University Collaboration Project through Satellite Communication
MUTA H, NAKAYAMA M, AOYAGI T, NISHIKATA A, NISHIHARA A, AKAHORI K, YOSHIHARA Y
日本教育工学会大会講演論文集 20 809 - 810 2004.9
-
Comparison of Synchronous & Asynchronous International Distance Education
NISHIHARA A, NAKAYAMA M, MUTA H, AOYAGI T, YOSHIHARA Y, NISHIKATA A, AKAHORI K
日本教育工学会大会講演論文集 20 ( 15-2a933-2 ) 815 - 816 2004.9
-
NISHIKATA Atsuhiro, FUKUMA Norimichi, AOYAGI Takahiro
IEICE technical report. Electromagnetic compatibility 104 ( 151 ) 17 - 23 2004.6
-
AOYAGI Takahiro, SAITO Akihiko, NISHIKATA Atsuhiro
IEICE technical report. Electromagnetic compatibility 104 ( 151 ) 11 - 16 2004.6
-
Development of e-learning Course Using Synchronous Tele-lecture
NAKAYAMA Minoru, HISHIHARA Akinori, AOYAGI Takahiro, MUTA Hiromitsu, UCHIYAMA Masafumi, SUMIZAKI Masato
Japan Journal of Educational Technology 28 ( Suppl. ) 81 - 84 2004
-
TB-1-4 Analysis for Wave Scattering from a Reference Metal Plate in Free Space method
NISHIKATA Atsuhiro, AOYAGI Takahiro
Proceedings of the IEICE General Conference 2 SS30 - SS31 2004
-
B-4-51 Theoretical analysis for reflected wave from a reference plate in freespace method
Aoyagi Takahiro, Nishikata Atsuhiro
Proceedings of the IEICE General Conference 418 418 - 418 2004
-
Development of e-learning course authoring system for international distance education
NISHIHARA A, AOYAGI T, NAKAYAMA M, MUTA H, UCHIYAMA M
日本教育工学会大会講演論文集 19 ( 2a-305-4 ) 851 - 852 2003.10
-
Development of Electromagnetic wave absorption pavement in consideration of base layer for Intelligent Transport Systems (ITS)
Saito Akihiko, Aoyagi Takahiro, Kunishima Takeshi
Proceedings of the Society Conference of IEICE 2003 ( 1 ) 362 - 362 2003.9
-
自由空間法による電波吸収体の評価におけるリファレンス板の影響
青柳貴洋, 齋藤章彦, 西方敦博
電子情報通信学会技術研究報告 EMCJ2003-107 81 - 86 2003
-
Development of e-learning Course using Synchronous Tele-lecture Video and Teaching Materials
NAKAYAMA Minoru, HISHIHARA Akinori, AOYAGI Takahiro, MUTA Hiromitsu, UCHIYAMA Masafumi, SUMIZAKI Masato
IEICE technical report. Education technology 102 ( 509 ) 87 - 92 2002.12
-
The operating of ANDES (Academic Network for Distance Education by Statellite)
SAIGO Y, AOYAGI T, NISHIKATA A, NAKAYAMA M, NISHIHARA A, AKAHORI K, MUTA H
日本教育工学会大会講演論文集 18 363 - 364 2002.11
-
High Schools and University Collaboration through Satellite Communication
MUTA H, NAKAYAMA M, AOYAGI T, NISHIKATA A, NISHIHARA A, AKAHORI K, SAIGO Y
日本教育工学会大会講演論文集 18 ( 2-103-1 ) 361 - 362 2002.11
-
Development and Evaluation of the Distance Education System using Communication Satellite
AOYAGI T, SAIGO Y, NAKAYAMA A, NISHIKATA A, NISHIHARA A, AKAHORI K, MUTA H
日本教育工学会大会講演論文集 18 ( 1-103-1 ) 219 - 220 2002.11
-
Accredited Graduate-Level Lectures for Japan and Thailand Using Satellite Communication
NISHIHARA A, AOYAGI T, NISHIKATA A, NAKAYAMA M, AKAHORI K, MUTA H
日本教育工学会大会講演論文集 18 ( 3-103-3 ) 545 - 546 2002.11
-
SAITO Akihiko, AOYAGI Takahiro, KUNISHIMA Takeshi, TSUKIMURA Masato, IWATA Takeo
IEICE technical report. Electromagnetic compatibility 102 ( 324 ) 25 - 30 2002.9
-
Develoment of the constellation observation support system with HMD
Aoyagi Takahiro, Abe Hiroshi, Shimizu Yasutaka
Proceedings of the IEICE General Conference 2002 ( 1 ) 195 - 195 2002.3
-
The web access control system that the sender assings receivers with authentication
Aoyagi Takahiro, Murota Masao, Shimizu Yasutaka
Proceedings of the IEICE General Conference 2001 ( 1 ) 219 - 219 2001.3
-
A theoretical study on suppression of scattering by a perfectly conductive cylinder array
T Aoyagi, A Nishikata, Y Hashimoto, K Ishino, Y Shimizu
ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS 84 ( 11 ) 41 - 50 2001
-
Development of the Internet access control system that a teacher can easily appoint receiving site
AOYAGI Takahiro, MUROTA Masao, SHIMIZU Yasutaka
6 ( 2 ) 431 - 432 2000.10
-
Development of the web access control system that sender appoints receivers
AOYAGI Takahiro, MUROTA Masao, SHIMIZU Yasutaka
IEICE technical report. Education technology 100 ( 189 ) 21 - 28 2000.7
-
NUMATA Keiji, AOYAGI Takahiro, SHIMIZU Yasutaka
IEICE technical report. Education technology 100 ( 113 ) 47 - 54 2000.6
-
Analysis of TV ghost caused by the super highrise tower and the suppression of reflected wave using the wave absorber.
Aoyagi Takahiro, Shimizu Yasutaka, Saito Toshio, Harakawa Kenichi
Proceedings of the IEICE General Conference 2000 ( 1 ) 310 - 310 2000.3
-
AOYAGI Takahiro, SHIMIZU Yasutaka, SAITO Toshio, HARAKAWA Kenichi
IEICE technical report. Electromagnetic compatibility 99 ( 540 ) 89 - 96 2000.1
-
Study of evaluation of handwriting characters for the KANJI learning system
NAKAGAMI Shintaro, AOYAGI Takahiro, SHIMIZU Yasutaka
Proceedings of the IEICE General Conference 1999 ( 1 ) 300 - 300 1999.3
-
誘電体とフェライトを組合せた円筒吸収体による完全導体柱からの散乱抑制
青柳 貴洋, 西方 敦博, 橋本 康雄, 石野 健, 清水 康敬
電子情報通信学会論文誌 J82-B ( 1 ) 142 - 150 1999
-
完全導体円柱列からの散乱波抑制に関する理論的検討
青柳貴洋, 西方敦博, 橋本康雄, 石野健, 清水康敬
電子情報通信学会論文誌B J82-B ( 1 ) 142 - 150 1999
-
A Theoretical Study on Suppression of Scattering by Perfectly Conductive Cylinder Array
TAKAHIRO AOYAGI, Atsuhiro Nishikata, Yasuo Hashimoto, Ken Ishino, YASUTAKA SHIMIZU
IEICE TRANSACTIONS on Communications J82-B ( 1 ) 142 - 150 1999
-
Suppression of TV-ghosts caused by suspension bridge using a wave absorber
Takahiro AOYAGI, Atsuhiro NISHIKATA, Yasutaka SHIMIZU
1999 International Symposium on Electromagnetic Compatibility, Tokyo 488 - 491 1999
-
Study on Effectiveness of Hi-Vision Display for The Figure Presentation
Minoru Nakayama, Tetsuji Kida, Asa Yoshii, Takahiro Aoyagi, Yasutaka Shimizu
Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers 52 ( 1 ) 112 - 115 1998.9
-
Study on Effectiveness of Hi-Vision Display for The Figure Presentation
Minoru Nakayama, Tetsuji Kida, Asa Yoshii, Takahiro Aoyagi, Yasutaka Shimizu
Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers 52 ( 1 ) 112 - 115 1998.9
-
A Study on design of wave absorber with consideration of periodic length
AOYAGI Takahiro, NISHIKATA Atsuhiro, SHIMIZU Yasutaka
Proceedings of the IEICE General Conference 1998 ( 1 ) 341 - 341 1998.3
-
A Study on characteristics of wave absorber with consideration ofperiodic length
Aoyagi Takahiro, Nishikata Atsuhiro, Shimizu Yasutaka
IEICE technical report. Electromagnetic compatibility 97 ( 470 ) 17 - 22 1998.1
-
A Theoretical Study on suppression of scattering by Perfectly conductive cylinder
Aoyagi Takahiro, Nishikata Atsuhiro, Hashimoto Yasuo, Ishino Ken, Shimizu Yasutaka
IEICE technical report. Electromagnetic compatibility 97 ( 105 ) 15 - 22 1997.6
-
Reduction of Scattering by Conductive Cylinder using Combination of Dielectric and Ferrite Material
AOYAGI Takahiro, NISHIKATA Atsuhiro, SHIMIZU Yasutaka
Proceedings of the IEICE General Conference 361 - 361 1997
-
Comparison of Reflection Characteristics of Wedgy-type Absorber using MMP and FD-TD method
Aoyagi Takahiro, Nishikata Atsuhiro, Shimizu Yasutaka
IEICE technical report. Electromagnetic compatibility 96 ( 135 ) 23 - 30 1996.6
-
EQUIVALENT PERMITTIVITY ANALYSIS FOR PERIODIC WEDGE-TYPE ABSORBER USING TRANSMISSION MODE-APPROXIMATION
T AOYAGI, A NISHIKATA, Y SHIMIZU
ELECTRONICS AND COMMUNICATIONS IN JAPAN PART I-COMMUNICATIONS 78 ( 10 ) 51 - 60 1995.10
-
Influence of Reaction Time in Mental Rotation Recognition by Image Quality
Yoshii Asa, Aoyagi Takahiro, Nakayama Minoru, Nishikata Atsuhiro, Shimizu Yasutaka
Proceedings of the IEICE General Conference 1995 ( 1 ) 316 - 316 1995.3
-
DESIGN OF MULTILAYER WAVE ABSORBER FOR OBLIQUE-INCIDENCE USING THE POINT FREQUENCY MATCHING METHOD
T AOYAGI, Y SHIMIZU
ELECTRONICS AND COMMUNICATIONS IN JAPAN PART I-COMMUNICATIONS 78 ( 3 ) 105 - 113 1995.3
-
Comparison of Reflection Characteristics of Wedge-type Wave Absorber by Multiple Multipole Program and FD-TD Method
AOYAGI Takahiro, NISHIKATA Atsuhiro, SHIMIZU Yasutaka
Proceedings of the IEICE General Conference 280 - 280 1995
-
Calculation of Reflection Characteristics of Wedge-type Wave Absorber by Multiple Multipole Program
AOYAGI Takahiro, NISHIKATA Atsuhiro, SHIMIZU Yasutaka
Proceedings of the IEICE General Conference 318 - 318 1995
-
Equivalent permittivity analysis for periodic wedge-type absorber using transmission mode approximation
Takahiro Aoyagi, Atsuhiro Nishikata, Yasutaka Shimizu
Electronics and Communications in Japan (Part I: Communications) 78 ( 10 ) 51 - 60 1995
-
Equivalent Permittivity Analysis of Periodic Wedge-type Absorber Using Transmission Mode Approximation
Aoyagi Takahiro, Nishikata Atsuhiro, Shimizu Yasutaka
IEICE technical report. Electromagnetic compatibility 94 ( 28 ) 19 - 26 1994.4
-
AOYAGI Takahiro, NISHIKATA Atsuhiro, SHIMIZU Yasutaka
The Transactions of the Institute of Electronics,Information and Communication Engineers. B-(0xF9C2) J77-B-II ( 12 ) 813 - 820 1994
-
斜入射ポイント整合による多層型電波吸収体の設計
青柳貴洋, 清水康敬
電子情報通信学会論文誌 J77-B-II ( 7 ) 414 - 421 1994
-
A Design of Multi-Layer Wave-Absober for Oblique Incidence by Point Frequency Matching Method
Aoyagi Takahiro, Shimizu Yasutaka
IEICE technical report. Electromagnetic compatibility 93 ( 239 ) 9 - 16 1993.9
Presentations
-
Construction of a WBAN Channel Model for Capsule Endoscopy
2009
-
An Overview of NICT's Channel Model Planning for Wireless Body Area Network
7th Management Committee Meeting, COST2100 2009
-
授業評価が教育改善に及ぼす効果
日本教育工学会 第21回全国大会 2005
-
ダイナミックウェアラブルBANチャネルの シミュレーション計算と偏波ダイバーシチの検討 ---3Dアニメーションソフトウェアを用いた人体動作時の 電波伝搬(400MHz帯)の時系列検討---
第545回URSI-F会合 2010
-
A Study on Optimization of Wave Absorber Composed of Multiples Wires for ETC
2005
-
3Dソフトウェアを用いた400MHz帯ウェアラブルBANにおける人体動作時の電波伝搬シミュレーションと偏波ダイバーシチの検討
電子情報通信学会2010年度第1回医療情報通信技術研究会 2010
-
The Effects of Student Ratings and Evaluation of Teaching on Education
2005
-
Utilizing Electromagnetic Shielding Textiles in Wireless Body Area Networks
32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society 2010
-
電波吸収体による金属コーナーからの反射波低減に関する一検討
電子情報通信学会ソサイエティ大会 2005
-
Study of Relation between Body Motion and Channel Response of Dynamic Body Area Channel
11th Management Committee Meeting, COST2100 2010
-
自由空間法における基準金属板の湾曲の影響による誤差の定量的検討
電子情報通信学会環境電磁工学研究会 2005
-
Theoretical analysis for reduction of reflected wave from a metalic corner using wave absorber
2005
-
To analyze the reasons for dynamic on-body channels
IEEE Wireless Communications and Networking Conference 2010
-
Efficacy of Distance Lecture Using High-Definition Camcorder
2005
-
鉄筋コンクリート壁のシールド特性に関する検討
電気学会計測研究会 2010
-
Development of the blackboard scripting system for distance education by image processing
2005
-
Tunable EM-wave Absorber Below 1GHz using Diode Grid and its Evaluatio by Large Stripline
2009 International Symposium on Electromagnetic Compatibility, Kyoto 2009
-
Influence of a reference plate in evaluation of an electromagnetic wave absorber by free space method
Proc. International symposium on Electromagnetic Compatibility 2004
-
A Body Surface Coordinator for Implanted Biosensor Networks
IEEE International Conference on Communications, Adhoc and Sensor Networking Symposium 2009
-
Comparison of Synchronous & Asynchronous International Distance Education
2004
-
Metamaterial Wave Absorber to Improve Oblique Incident Characteristics
2009 International Symposium on Electromagnetic Compatibility, Kyoto 2009
-
Development of a WBAN Channel Model for Capsule Endoscopy
The 2009 IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting 2009
-
A study of reflected wave from a reference plate in freespace method in consideration of a curvature
2004
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Research on Wireless Communication Technologies for Advanced Medical Information Networks - Activity Report of Medical ICT Consortium Promoted by NICT -
The 13th Spring Meeting of JAMI (Symposium 2009 in Nagasaki) 2009
-
Influence of a reference plate in evaluation of an electromagnetic wave absorber by free space method
2004
-
Channel Modeling and Performance Evaluation on UWB-Based Wireless Body Area Networks
IEEE International Conference on Communications 2009
-
High Schools and University Collaboration Project through Satellite Communication
2004
-
Path Loss and Power Delay Profile Channel Models for Wireless Body Area Networks
The 2009 IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting 2009
-
Numerical Evaluation for influence of sample size and source distance on the reflectivity measurement by free space method
2004
-
Wearable Channel Models Based on Measured Channel Responses by using Practical Antennas
2009
-
Influence of a reference plate in evaluation of an electromagnetic wave absorber by free space method
Proc. International symposium on Electromagnetic Compatibility 2004
-
ETCレーン間に用いる円筒棒列電波吸収体に関する一検討
電子情報通信学会環境電磁工学研究会 2005
-
High Frequency Characteristics of a polyurea variable-line-focus-beam-transducer
2009
-
Development of ingredients for electromagnetic wave absorbing pavement
International symposium on Electromagnetic Compatibility 2004
-
Tunable EM-wave Absorber below 1 GHz using Diode Lattice and its Evaluation by Large Stripline
IEICE General Conference 2009
-
Theoretical analysis for reflected wave from a reference plate in freespace method
2004
-
電波伝搬損失測定とシミュレーションによるインプラントWBAN電波伝搬モデルの構築
電子情報通信学会医療情報通信技術研究会 2009
-
インプラントWBANを想定した液体ファントムによる電波伝搬損失の測定
電子情報通信学会医療情報通信技術研究会 2009
-
EM-wave Absorber using Artificial Magnetic Material Composed of Loop Array
2009 Communications Society, IEICE Conference 2009
-
Investigation for the Measurement of Complex Permittivity of Fingers around 800 MHz by Waveguide Penetration Method
2009 Communications Society, IEICE Conference 2009
-
Equivalent Circuit Analysis of Efficiency Improvement in Multilayered Polyurea Ultrasonic Transducers
The 29th Symposium on Ultrasonics Electronics 2009
-
Performance evaluation of wireless communications through capsule endoscope
The 31st Annual International IEEE EMBS Conference 2009
-
Theoretical study for diffracted wave from pyramidal electromagnetic wave absorber
The Technical Group on Microwave Engineering, IEICE 2009
-
Human motion simulation for dynamic Wearable WBAN propagation channel
IEIECE Medical Information and Communications Technology Meeting (MICT) 2009
-
Measurements of received signal level radiated from implanted signal generators
2009 Communications Society, IEICE Conference 2009
-
Simulation of Human Motions for Constructing the Dynamic Wearable WBAN Channel Model
2009 Communications Society, IEICE Conference 2009
-
動画像処理による遠隔講義用板書記録システムの開発
日本教育工学会 第21回全国大会 2005
-
Channel models for wearable and implantable WBANs
IEEE 802.15 WPAN Document IEEE P802.15-08-0416-04-0006 2008
-
ウェアラブルおよびインプラントBANチャネルモデル構築- シミュレーションによる400MHz帯での検討 -
電子情報通信学会 医療情報通信技術時限研究専門委員会 2008
-
斜入射ポイント整合による多層型電波吸収体の設計
電子情報通信学会環境電磁工学研究会 1993
-
Preliminary channel models for wearable WBAN
IEEE 802.15 WPAN Document IEEE 802.15-08-0155-00-0006 2008
-
Designing multi-layer wave-absorber for oblique incident by point frequency matching method
International symposium on Electromagnetic compatibility 1994
-
導波管貫通法による手指の複素誘電率測定の検討
電子情報通信学会総合大会 2008
-
Equivalent Permittivity Analyis of Periodic Wedge-type Absorber using Transmission Mode Approximation
1994
-
可変容量ダイオードを用いた可変整合型電波吸収体の検討
電子情報通信学会技術研究報告 2008
-
等価誘電率の伝搬モード近似によるウェッジ形電波吸収体の周期長の考慮
電子情報通信学会環境電磁工学研究会 1994
-
Capsule endoscope using an implant WBAN
IEEE 802.15 WPAN Document IEEE 802.15-08-0154-00-0006 2008
-
等価誘電率の伝搬モード近似によるウェッジ形電波吸収体の周期長の考慮
電子情報通信学会春季大会 1994
-
ウェッジ形電波吸収体のMMP法とFD-TD法による反射特性の比較
電子情報通信学会環境電磁工学研究会 1996
-
ポリ尿素可変線集束トランスデューサによる弾性表面波速度測定法の検討
電子情報通信学会総合大会 2008
-
情報提示の画像品質がメンタルローテーションの反応時間に及ぼす影響
電子情報通信学会総合大会 1995
-
ウェアラブルBANチャネルモデルの構築（２）
電子情報通信学会医療情報通信研究会資料集 2008
-
MMP(多重多極法)によるウェッジ形電波吸収体の反射特性の計算
電子情報通信学会総合大会 1995
-
ポリ尿素可変線集束トランスデューサの周波数特性
第29回超音波エレクトロニクスの基礎と応用に関するシンポジウム 2008
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Static Propagation and Channel Models in Body Area
COST 2100 6th Management Committee Meeting 2008
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Measurements of surface acoustic wave velocity using
2007
-
ピラミッド型電波吸収体への斜入射時の散乱波の検討
2008 年電子情報通信学会通信ソサイエティ大会講演論文集1 2008
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ウェアラブルBAN のチャネルモデル構築の一検討
2008電子情報通信学会通信ソサイエティ大会講演論文集1 2008
-
Channel model on various frequency bands for wearable Body Area Network
2008
-
隙間表面にコーティングした損失膜による漏洩電波の減衰効果に関する検討
2008電子情報通信学会通信ソサイエティ大会 2008
-
Statistical Property of Dynamic BAN Channel Gain at 4.5GHz
IEEE 802.15 WPAN Document 2008
-
ウェッジ形多層型電波吸収体の反射特性の計算
電子情報通信学会春期大会 1993
-
Channel Models between body surface and wireless access point for UWB Band
IEEE 802.15 WPAN Document IEEE 802.15-08-0576-00-0006 2008
-
Channel Model for Wireless Body Area Networks
Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE 2008
-
ポリ尿素膜を用いた高周波超音波トランスデューサの特性評価
日本音響学会2007年秋季研究発表会 2007
-
ポリ尿素可変線集束トランスデューサによる弾性表面波速度の測定
日本音響学会2007年秋季研究発表会 2007
-
Channel Model for Wireless Body Area Network
The 2nd International Symposium on Medical Information and Communication Technology (ISMICT'07) 2007
-
In vivo Measurement of Human Body's Complex Permittiity by Waveguide Penetration Method
EMCJ 2007
-
金属粉混合樹脂を使用したUWB用アンテナの検討
電子情報通信学会ソサイエティ大会 2007
-
Wave Absorber by Using Cylindrical Bars with Magnetic Loss Covers Arranged Metallic Mesh for Installing between ETC Lanes
Asia-Pacific Microwave Conference 2007 (APMC 2007) 2007
-
Lecture improvement support system using a humanoid robot as a perticipant
2007
-
Development of the high-resolution blackboard-image trasmission system for distance education using character extraction
2007
-
Measurements of surface acoustic wave velocity using a polyurea ultrasonic variable-line-focus-beam-transducer
Proc. Symp. Ultrason. Elctron., 28 2007
-
Small Resinous UWB Chip Antenna using Metal Powder
2007 IEEE International Conference on Ultra-WideBand 2007
-
Electromagnetic wave propagation simulation and effects of polarization diversity for 400 MHz band wearable BAN by using 3D software
IEIECE Medical Information and Communications Technology Meeting (MICT) 2010
-
To analyze the reasons for dynamic on-body channels
IEEE Wireless Communications and Networking Conference 2010
-
Numerical analysis for ultrasonic beam of variable line focus transducer
27th Symposium on Uitorasonic Electronics 2006
-
Numerical Simulation of a Dynamic Wearable WBAN Propagation Channel with Human Motions
2010 IEICE general conference 2010
-
Channel Model for Wireless Body Area Network
The 2nd International Symposium on Medical Information and Communication Technology (ISMICT'07) 2007
-
A Fundamental Study on Electromagnetic Shielding Characteristics of Reinforced Concrete Wall
2010 IEICE general conference 2010
-
導波管貫通法による人体複素誘電率のin vivo測定の検討
電子情報通信学会環境電磁工学研究会 2007
-
Composition of Dynamic Wearable Body Area Network Propagation Channel by Using Numerical Simulations
The 4th International Symposium on Medical Information and Communication Technology 2010
-
Wave absorber formed by arranging cylindrical bars at intervals for improving ETC environment
EMC europe 2006 2006
-
Simulation of reflection coefficient measurements for pyramidal electromagnetic wave absorber with consideration of diffracted wave
2010 IEICE general conference 2010
-
Wave Absorber by Using Cylindrical Bars with Magnetic Loss Covers Arranged Metallic Mesh for Installing between ETC Lanes
Asia-Pacific Microwave Conference 2007 (APMC 2007) 2007
-
Investigation for the Calibration of Waveguide Penetration Method Using Standard Samples
2010 IEICE general conference 2010
-
動画像処理を用いた遠隔講義用板書記録システムを利用した講義の評価
日本教育工学会第23回全国大会 2007
-
人型ロボットを受講者として利用した授業改善支援システム
日本教育工学会第23回全国大会 2007
-
Design of the Multi-layered polyurea piezoelectric ultrasonic transducer
Proc. 2010 Spring Meeting, Acoustical Society of japan 2010
-
ポリ尿素可変線集束超音波トランスデューサによる弾性表面波速度の測定
第28回音波エレクトロニクスの基礎と応用に関するシンポジウム 2007
-
Analysis for EM-wave Absorber Composed of Loop Array and Circuit-Theory-based Derivation of Matching Condition
2010 IEICE general conference 2010
-
Small Resinous UWB Chip Antenna using Metal Powder
2007 IEEE International Conference on Ultra-WideBand 2007
-
文字抽出処理を施した遠隔講義用高精細板書画像伝送システムの開発
日本教育工学会第23回全国大会 2007
-
正規大学院講義の同期/非同期方式国際遠隔教育の比較
日本教育工学会 第20回全国大会 2004
-
衛星通信による高大連携プロジェクトの評価
日本教育工学会 第20回全国大会 2004
-
High Schools and University Collaboration through Satellite Communication
2003
-
Development of Electromagnetic wave absorption pavement in consideration of base layer for Intelligent Transport Systems(ITS)
2003
-
電磁波吸収性能を有する舗装材の特性(その2)
第25回日本道路会議 2003
-
衛星通信による高大連携プロジェクトの運営
日本教育工学会 第19回全国大会 2003
-
Development of the electromagnetic wave absorption pavement
2002
-
自由空間法による電波吸収体の評価におけるリファレンス板の影響
電子情報通信学会環境電磁工学研究会 2003
-
Influence of a reference plate in evaluation of an electromagnetic wave absorber by free space method
2003
-
国際遠隔教育におけるe-learning教材作成システムの開発と運用
日本教育工学会 第19回全国大会 2003
-
基盤層を考慮したITS 用磁性電波吸収舗装材の開発
電子情報通信学会ソサイエティ大会 2003
-
Development and Evaluation of the Distance Education System using Communication Satellite
2002
-
Measurement of Permittivity and Permeability and Improvement of Oblique Incidence characteristic of Magnetic Wave Absorber Pavement Material
2002
-
Accredited Graduate-Level Lectures for Japan and Thailand Using Satellite Communication
2002
-
WBAN用動的伝搬チャネルモデル作成のための人体動作シミュレーション
電子情報通信学会2009年度第2回医療情報通信技術研究会 2009
-
衛星通信遠隔教育システムの開発と評価
日本教育工学会 2002
-
Metamaterial Wave Absorber to Improve Oblique Incident Characteristics
2009 International Symposium on Electromagnetic Compatibility, Kyoto 2009
-
ITS用電波吸収舗装材の複素比透磁率・複素比誘電率の測定および斜入射特性の改善に関する研究
電子情報通信学会環境電磁工学研究会 2002
-
ウェアラブルWBAN用動的伝搬チャネルモデル構築のための 人体動作のシミュレーション
2009年電子情報通信学会通信ソサイエティ大会 2009
-
衛星通信による高大連携プロジェクト
日本教育工学会 第18回大会 2002
-
ピラミッド型電波吸収体からの回折波の理論計算
電子情報通信学会マイクロ波研究会 2009
-
衛星通信を用いる日タイ同時正規大学院講義
日本教育工学会 第18回大会 2002
-
Channel Modeling and Performance Evaluation on UWB-Based Wireless Body Area Networks
IEEE International Conference on Communications 2009
-
The operation of ANDES
2002
-
High Schools and University Collaboration through Satellite Communication
2002
-
電磁波吸収舗装の開発
電子情報通信学会ソサイエティ大会 2002
-
Tunable EM-wave Absorber Below 1GHz using Diode Grid and its Evaluatio by Large Stripline
2009 International Symposium on Electromagnetic Compatibility, Kyoto 2009
-
A Body Surface Coordinator for Implanted Biosensor Networks
IEEE International Conference on Communications, Adhoc and Sensor Networking Symposium 2009
-
HMDを用いた星座観察補助システムの開発
電子情報通信学会総合大会 2002
-
導波管貫通法による800MHz帯における手指の複素誘電率測定の検討
2009年電子情報通信学会通信ソサイエティ大会 2009
-
衛星通信遠隔教育システムの運用
日本教育工学会 第18回大会 2002
-
体内一時留置したカプセル型信号発生器からの信号強度測定
2009年電子情報通信学会通信ソサイエティ大会 2009
-
衛星通信遠隔教育システムの運用
日本教育工学会 2002
-
ループ配列による人工磁性体を用いた電波吸収体の一検討
2009年電子情報通信学会通信ソサイエティ大会 2009
-
Capsule endoscope using an implant WBAN
IEEE 802.15 WPAN Document IEEE 802.15-08-0154-00-0006 2008
-
インターネット情報発信における個人情報検出ソフトの開発
電子情報通信学会教育工学研究会 2000
-
Preliminary channel models for wearable WBAN
IEEE 802.15 WPAN Document IEEE 802.15-08-0155-00-0006 2008
-
超高層塔によるテレビ受信障害と電波吸収体による対策の理論的検討
電子情報通信学会総合全国大会 2000
-
Manufacturing and Measurement of Variably Matchable EM-wave Absorber
IEICE Technical Report 2008
-
教師が簡単に公開範囲を指定できるインターネットアクセス制御システムの開発
教育工学関連学協会連合第6回大会 2000
-
Investigation of Variably Matchable EM-wave Absorber using Varicap Diodes
IEICE Technical Report 2008
-
発信者が受信者を指定するwebアクセス制御システムの開発
電子情報通信学会教育工学研究会 2000
-
等価回路解析による多層ポリ尿素可変線集束トランスデューサの効率改善
第30回超音波エレクトロニクスの基礎と応用に関するシンポジウム 2009
-
認証機能を有する受信者指定webアクセス制御システム
電子情報通信学会総合大会 2001
-
Performance evaluation of wireless communications through capsule endoscope
The 31st Annual International IEEE EMBS Conference 2009
-
Suppression of TV-ghosts Caused by Super Highrise Tower Using a Wave Absorber
The Progress in Electromagnetics Research Symposium 2001
-
Investigation for the Measurement of Complex Permittivity of Fingers by Waveguide Penetration Method
2008 IEICE general conference 2008
-
超高層塔によるテレビ受信障害範囲の検討と電波吸収体による対策の理論的計算
電子情報通信学会環境電磁工学研究会 2000
-
Measurement method of surface acoustic wave velocity using a polyurea ultrasonic variable-line-focus-transducer
2008
-
Suppression of TV-ghosts Caused by Super Highrise Tower Using a Wave Absorber
The Progress in Electromagnetics Research Symposium 2001
-
同期型遠隔講義の映像と教材を用いたe-learning教材開発
電子情報通信学会教育工学研究会 2002
-
Channel models for wearable and implantable WBANs
IEEE 802.15 WPAN Document IEEE P802.15-08-0416-04-0006 2008
-
Improvement for Accurate Measurement of finger's Complex Permittivity by Waveguide-Penetration Method
EMCJ 2008
-
Suppression of TV-ghosts Caused by Suspension Bridge using a Wave Absorber
International symposium on Electromagnetic compatibility (IEICE, IEEE EMC-S) 1999
-
Channel model on various frequency bands for wearable Body Area Network
First International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2008) 2008
-
図形提示におけるハイビジョンの表示効果に関する一検討
教育工学関連学協連合第5回全国大会 1997
-
A Study about Attenuation Effect of Leaky-wave by a zCoated Lossy Film on the Surface of a Gap
2008
-
完全導体円柱列からの散乱波抑制に関する理論的検討
電子情報通信学会環境電磁工学研究会 1997
-
Frequency characteristics of the polyurea ultrasonic variable-line-focus-beam-transducer
The 29th Symposium on Ultrasonics Electronics 2008
-
MMP法およびFD-TD法によるウェッジ形電波吸収体の反射特性の比較
電子情報通信学会総合大会 1996
-
Static Propagation and Channel Models in Body Area
COST 2100 6th Management Committee Meeting 2008
-
Comparison of Reflection Characteristics of Wedge-type Absorber using MMP and FD-TD method
1996
-
Channel Models between body surface and wireless access point for UWB Band
IEEE 802.15 WPAN Document IEEE 802.15-08-0576-00-0006 2008
-
電波吸収体の周期長を考慮した設計に関する検討
電子情報通信学会総合大会 1998
-
Channel Model for Wireless Body Area Networks
Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE 2008
-
電波吸収体の周期長を考慮した特性に関する検討
電子情報通信学会環境電磁工学研究会 1998
-
Study of the scattering wave of a pyramidal electromagnetic wave absorber at oblique incidence
2008 年電子情報通信学会通信ソサイエティ大会 2008
-
誘電体とフェライトを組合せた円筒吸収体による完全導体柱からの散乱抑制
電子情報通信学会総合大会 1997
-
A Study on Channel Model for Wearable Body Area Network
2008 年電子情報通信学会通信ソサイエティ大会 2008
-
A Theoretical Study on suppression of scattering by Perfectly conductive cylinder
IEICE Technical Report 1997
-
Statistical Property of Dynamic BAN Channel Gain at 4.5GHz
IEEE 802.15 WPAN Document 2008
-
Suppression of TV-ghosts Caused by Suspension Bridge using a Wave Absorber
International symposium on Electromagnetic compatibility (IEICE, IEEE EMC-S) 1999
-
漢字学習システムのための手書き文字の評価の検討
電子情報通信学会総合大会 1999
-
Performance Evaluation on Wireless Communication Technology for Implantable Wireless Body Area Network
International Symposium on Medical Information and Communication Technology 2009
-
Path Loss and Power Delay Profile Channel Models for Wireless Body Area Networks
The 2009 IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting 2009
-
ポリ尿素可変線集束トランスデューサの高周波特性
日本音響学会2009年春季研究発表会 2009
-
Tunable EM-wave Absorber below 1 GHz using Diode Lattice and its Evaluation by Large Stripline
電子情報通信学会総合大会 2009
-
Development of a WBAN Channel Model for Capsule Endoscopy
The 2009 IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting 2009
-
無線通信技術の利用による医療情報ネットワークの高度化 - 医療ICTコンソシアムにおける活動成果報告 -
第13回日本医療情報学会春期学術大会 2009
-
An Overview of NICT's Channel Model Planning for Wireless Body Area Network
7th Management Committee Meeting, COST2100 2009
-
UWB Channel Modeling for BANs based on the Auto-Regressive Moving Average (ARMA) Synthesis Method
International Symposium on Medical Information and Communication Technology 2009
-
実用的なアンテナを用いた通信路応答測定によるウェアラブルWBANチャネルモデルの作成
電子情報通信学会総合大会 2009
-
カプセル型内視鏡を想定した WBAN チャネルモデルの構築
電子情報通信学会総合大会 2009
-
Composition of Dynamic Wearable Body Area Network Propagation Channel by Using Numerical Simulations
The 4th International Symposium on Medical Information and Communication Technology 2010
-
鉄筋コンクリート壁のシールド特性に関する基礎検討
2010年電子情報通信学会総合大会 2010
-
Numerical analysis for ultrasonic beam of variable line focus transducer
The 27th Symposium on Ultrasonic Electronics 2006
-
多層ポリ尿素圧電膜超音波 トランスデューサの設計
日本音響学会2010年春季研究発表会 2010
-
Numerical analysis for ultrasonic beam of variable line focus transducer
27th Symposium on Uitorasonic Electronics 2006
-
ピラミッド型電波吸収体の回折波を考慮した 反射係数測定法のシミュレーション
2010年電子情報通信学会総合大会 2010
-
Quantitative study for measurement error caused by curvature of a reference plate in free space method
2005
-
人体動作時のウェアラブル WBAN 用動的伝搬チャネルの数値シ ミュレーション計算
2010年電子情報通信学会総合大会 2010
-
金網を裏打ちした損失磁性被覆円筒棒列によるETC電波環境改善に関する検討
電子情報通信学会マイクロ波研究会 2006
-
Utilizing Electromagnetic Shielding Textiles in Wireless Body Area Networks
32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society 2010
-
Wave absorber formed by arranging cylindrical bars at intervals for improving ETC environment
EMC europe 2006 2006
-
Study of Relation between Body Motion and Channel Response of Dynamic Body Area Channel
11th Management Committee Meeting, COST2100 2010
-
可変収束型トランスデューサからの放射音場の有限差分時間領域による数値シュミレーション
電子情報通信学会2006ソサエティ大会 2006
-
ループ配列を用いた電波吸収体の数値解析および回路論的な整合条件の導出
2010年総合大会 2010
-
可変集束型トランスデューサからの放射音場の有限差分時間領域法による数値シミュレーション
電子情報通信学会ソサイエティ大会 2006
-
導波管貫通法における標準試料による校正法の検討
2010年総合大会 2010
-
ETC用金網付円筒棒列電波吸収体に関する一検討
電子情報通信学会ソサイエティ大会 2006
-
Numerical Simulation of a Dynamic Wearable BAN Channel and Consideration of Polarization Diversity
The 545th URSI-F meeting 2010
-
A Study on Improvement of ETC Environment by Using Cylindrical Bars with Magnetic Loss Covers Arranged Metallic Mesh
2006
-
Numerical analysis for ultrasonic beam of variable line focus transducer
The 27th Symposium on Ultrasonic Electronics 2006
-
UWB Channel Modeling for BANs based on the Auto-Regressive Moving Average (ARMA) Synthesis Method
International Symposium on Medical Information and Communication Technology 2009
-
遠隔講義の高効率化---HDVカメラを用いた検証実験
日本教育工学会 第21回全国大会 2005
-
Performance Evaluation on Wireless Communication Technology for Implantable Wireless Body Area Network
International Symposium on Medical Information and Communication Technology 2009
-
Designing multi-layer wave-absorber for oblique incident by point frequency matching method
International symposium on Electromagnetic compatibility 1994
-
散乱界表示FDTD法と等価定理にもとづく有限サイズの電波吸収体による球面波散乱計算
電子情報通信学会環境電磁工学研究会 2004
-
Development of ingredients for electromagnetic wave absorbing pavement
International symposium on Electromagnetic Compatibility 2004
-
自由空間法による反射量測定における試料サイズと波源距離の影響の数値計算
電子情報通信学会ソサイエティ大会 2004
-
自由空間法の基準金属板の湾曲を考慮した反射特性解析
電子情報通信学会環境電磁工学研究会 2004
-
自由空間法における基準金属板からの散乱波解析
電子情報通信学会総合大会 2004
-
自由空間法における基準金属板からの反射波の物理光学近似解析
電子情報通信学会総合大会 2004
-
ウェアラブルBANチャネルモデルの構築（１）
電子情報通信学会医療情報通信研究会資料集 2008
-
導波管貫通法による手指の複素誘電率測定装置の確度検討
電子情報通信学会環境電磁工学研究会 2008
-
斜入射ポイント整合による多層型電波吸収体の設計
電子情報通信学会春期大会 1993
-
可変整合型電波吸収体の作成と測定
電子情報通信学会技術研究報告 2008
Works
-
電磁波の伝搬特性に関する研究
2010
-
電磁波遮蔽・吸収通路に関する電磁界シミュレーションの検討
2008 - 2009
-
次世代無線通信システム用端末機器向けアンテナおよび関連部品に関する研究
2008
-
次世代無線通信システム用端末向けアンテナ及び関連部品に関する研究
2006 - 2007
-
遠隔講義の板書映像から文字，図形のみを抽出する動画像処理システムの 高精細画像処理システムへのインテグレーションに関する研究
2006 - 2007
-
次世代ワイヤレスシステムに関する研究
2005 - 2006
-
遠隔教育のための板書自動スクリプティングに関する研究
2004 - 2005
-
高柔軟性・高熱伝導性・高絶縁性を持つ多機能電波吸収材の開発
2002
-
天体観測教育用バーチャルリアリティ・ディスプレイシステムの開発に関する研究
2001 - 2002
-
インターネットの教育利用における発信者側でのアクセス制御に関する研究
1999 - 2000
Awards
-
Symposium on Ultrasonic Electronics: Young Scientist Award
2007
-
超音波シンポジウム奨励賞
2007
Research Projects
-
Simultaneous Wireless Power and Information Transfer for Medical Implants by Near-field Coupling
Grant number：23KF0225 2023.11 - 2026.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows
Grant amount：\2000000 （ Direct Cost: \2000000 ）
-
次世代ワイヤレス通信のための電磁界計測場の最適化と理論解析手法に関する研究
Grant number：23K03835 2023.4 - 2026.3
日本学術振興会 科学研究費助成事業 基盤研究(C)
青柳 貴洋
Grant amount：\4810000 （ Direct Cost: \3700000 、 Indirect Cost：\1110000 ）
本研究は、アンテナの特性測定や電子機器、特に環境電磁工学におけるエミッション(電子機器からの不要な電磁ノイズの放射量)測定やイミュニティ(機器の電磁ノイズへの耐力)測定に活用が期待されるリバーブレーションチャンバー(共振箱、共鳴箱)の解析・設計手法に関するものである。
本年度は研究初年度であるため、まず、研究期間を通じて利用することになる電磁界解析プログラムの開発に重点をおいて行った。特に導体で構成されているリバーブレーションチャンバーに対して有効なモーメント法のコード開発を行い、電磁界分布や電界均一性のシミュレーション計算が行えるようになった。また、誘電体や磁性体を含む構造の電磁界解析を行うシミュレーション手法として有限要素法の実装を行い、概ね電磁界の計算が行えるようになった。これらにより、リバーブレーションチャンバーの計算のための新たな理論的フレームワークである固有関数展開や、モード整合の考え方、さらには数値積分の精度向上などの研究要素を実装してゆくことが可能となった。シミュレーション計算については、現在、研究室のPC(Linux)上でIntel系のライブラリにより高速な計算が行えるよう開発をすすめてきたが、2024年4月に本学のスーパーコンピュータ(TSBUMAME)がバージョン4にアップグレードされることに伴い、大規模計算についても同じコードにて規模を拡大することで計算が可能となる。これらの研究成果の一部については2024年5月の国際会議EMC2024で発表予定となっている。 -
Development of Scenario De-Embedding Method for Wireless Body Area Network
Grant number：18K04126 2018.4 - 2023.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
Grant amount：\4030000 （ Direct Cost: \3100000 、 Indirect Cost：\930000 ）
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Research on generic in-body electromagnetic wave propagation and application for body area network
Grant number：15K06054 2015.4 - 2019.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
Aoyagi Takahiro
Grant amount：\4810000 （ Direct Cost: \3700000 、 Indirect Cost：\1110000 ）
This research aimed to investigate in-body electromagnetic wave propagation mainly for body area network tele communications and an application of it. As an application of in-body wave propagation, abdominal fat measurement, which is usually performed in annual health check, by microwave was chosen. On designing a system that use in-body wave propagation, characterization of in-body propagation channel is necessary. In this research, frequencies are geometry of the rectangular wave guide are investigated to perform efficient measurement of abdominal fat. As consider these with real human abdomen is difficult, numerical simulations are performed. As a result, an appropriate size and frequencies are found. In the simulations, layered cylindrical and elliptic model that emulates human abdomen are used for investigation. To estimate human abdomen from measured scattering coefficients, a neural network is used and successful estimations are used in certain accuracy.
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Identification of Body Motion using Radio Channel Characteristics for BAN Context-Aware Communication
Grant number：26420344 2014.4 - 2017.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
KIM MINSEOK
Grant amount：\4940000 （ Direct Cost: \3800000 、 Indirect Cost：\1140000 ）
This study studied an identification method of body motion using time variation of the radio signal strength taken by multiple body-worn sensors for BAN context-aware communication. In addition, the relationship between body motion and radio channel status has been investigated, and through the evaluation of an adaptive power control using identified body motion at coordinator, the feasibility of context-aware communication has been demonstrated.
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Propagation Channel Modeling in Wireless Body-Area Sensor Networks
Grant number：22360150 2010 - 2012
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
TAKADA Jun-ichi, AOYAGI Takahiro, KIM Minseok
Grant amount：\19240000 （ Direct Cost: \14800000 、 Indirect Cost：\4440000 ）
Body area network (BAN) has been considered for specific applications such as medicine, healthcare, firefighter, and military, as well as entertainment applications. This project aimed at solving the fundamental problems of analysis and modeling of dynamic behavior of BAN channel due to the human body motion, by improving the channel sounding systems, simulation approach, and practical modeling, as well as at identifying the highly reliable transmission schemes under the dynamic channels. Major outcomes of the project are summarized into the following four items: (1) Establishment of dynamic multipoint channel sounders, (2) establishment of dynamic BAN channel simulators, (3) antenna de-embedding from BAN channel, and (4) highly reliable transmission schemes for multisensor BAN.
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Development and Evaluation of Distance Education Using High-Definition Video Transmission with Reduced Camera Work
Grant number：17300263 2005 - 2007
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
NISHIHARA Akinori, NAKAYAMA Minoru, NISHIKATA Atsuhiro, AOYAGI Takahiro
Grant amount：\15960000 （ Direct Cost: \14700000 、 Indirect Cost：\1260000 ）
High-Definition (BD) video has wide view and high resolution, and it can suitably used in distance education. With HD video even without camera work, remote students can study as live students. The Center for Research and Development of Educational Technology, Tokyo Institute of Technology transmits many lectures to domestic high schools and foreign universities. Actual distance lectures shot by expert cameramen using Standard-Definition (SD) video are also taken by HD video without any camera work. Those videos are viewed by subjects and we conducted questionnaire survey and eye tracking.
The main results are;
1. Expert cameramen properly shoot areas where students mainly see, but we demonstrated quantitatively that students tend to see outside of those areas. So it is practically impossible to satisfy all the students.
2. Teaching Assistants cannot control a camera, but even without any camera work HD video can show wide area with enough resolution. So it can suitably used as distance education media.
These results show that proper educational environment can be set up by preparing wide band network to transmit HD video with reduced labor cost for expert cameramen. In those cases, however, big screen should be prepared not to make characters on the board too small. -
遠隔教育のための板書自動スクリプティングシステムに関する研究
Grant number：16700554 2004 - 2005
日本学術振興会 科学研究費助成事業 若手研究(B)
青柳 貴洋
Grant amount：\2900000 （ Direct Cost: \2900000 ）
衛星通信など、標準テレビ画像を送信する形態の遠隔講義で受講者から、「板書の文字が見づらい」という指摘がなされている。そこで、本研究では、板書中心の遠隔講義の黒板の見やすさを改善して、非同期型の遠隔講義に活用するために、講義室内で黒板を撮影した固定カメラの映像から、板書の内容(文字、図形)のみを抽出し、遠隔講義用に提供できる動画像に変換するシステムの開発を行った。本システムの撮影対象の黒板は、180cm×90cmのグリーンマーカーボード1枚である。黒板の中心から距離3.8mの地点にデジタルハイビジョンビデオカメラを設置し、黒板全体が収まるようにHDモード(解像度1280×720)で撮影した。後の画像処理を容易にするため、ビデオカメラの焦点距離、露光、ホワイトバランスの自動制御を解除し、撮影開始前に手動で適切な値に設定して撮影を行った。撮影した画像はIEEE1394(HDV)接続により画像処理用のPCに転送し、動画像処理および動画ファイルへの書き出しを行った。開発した画像処理システムを用いると、撮影した講義画像から、講義を行っている人物が消去され、黒板に書かれた文字のみを残すことができる。模擬的に行った講義を処理した結果、講師の体によって部分的に遮られた文字も、後の処理により表示されることが確認でき、概ね良好な板書画像を得られた。本システムでは、処理した画像を元の動画と同じ時間軸を持つムービーとして書き出す。これにより、非同期型の遠隔教育において、講師を撮影した動画やプレゼンテーション資料とともに板書のみの動画像を提供できると考えられる。
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Graduate Education Using International Distance Education System via Satellite
Grant number：15606006 2003 - 2004
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
NISHIHARA Akinori, NAKAYAMA Minoru, NISHIKARA Atsuhiro, AOYAGI Takahiro, FUJII Nobuo, ARAKI Kyomichi
Grant amount：\3400000 （ Direct Cost: \3400000 ）
We conducted international distance education via satellite. The delivered lectures are the ones taught in English as international graduate program. The receiving universities are Asian Institute of Technology and Ring Mongkut's Institute of Technology, both in Bangkok, Thailand. Pictures and voices were reliably transmitted in high quality via satellite, while internet TV conference system was used for questions and answers. The latter reduced the equipment cost at receiving side while maintaining the real time interaction between lecturer and students, which made the students to keep their high motivation. At least once in a term, the lecturers were sent to the receiving university to have a face-to-face lecture session, which also made students happy and feel they are well treated.
We conducted a survey of school calendars, time tables, etc. of several universities in the world. It becomes clear that the educational systems do not always coincide each other, but it is also found that we may find almost common time slot if we carefully review the systems of two universities. Finding such intersection is not always possible nor an easy job. We may have to combine a special lecture of a intensive course. In fact we conducted an intensive course during summer vacation in Thailand, which attracted Thai students very much.
International distance education inevitably have structural barrier, such as different educational systems, language barrier, physical distance, time difference, etc. We have shown these obstacles can be overcome by mutual understanding and mutual efforts, and conducted successful distance education. Students' survey also show positive responses. We believe that the key points of the success was the enthusiasm of both sides. -
Development and Evaluation of a Information System using the Internet to Support Satellite Education
Grant number：13558014 2001 - 2003
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
MUROTA Masao, NISHIKATA Atsuhiro, NAKAYAMA Minoru, SHIMIZU Yasutaka, AOYAGI Takahiro
Grant amount：\14400000 （ Direct Cost: \14400000 ）
The aim of this research involves a development and evaluation of information system using the Internet to support satellite education. The followings are the achievements of this research.
(1)Development of a System to Deliver Slide Patterns of Lecturer and a Feedback System Using the Internet
This system can deliver slide patterns shown by lecturer to a learners' web browser via a network or the Internet. A slide pattern is sent in sync with a lecture. By this function, learners can read slide patterns more clearly than a TV screen sent by satellite. In addition to this, this system can gather learners' real-time response for an enquete via the Internet. Furthermore, a lecturer is able to show a graph of result on a web browser.
(2)Development of Notification System for Educational Information
Users of this system can receive e-mail for notification of new educational information, which has relations with keywords that users have registered. This system has been released and used since September 2002 in the National Information Center for Educational Resources (NICER). Furthermore, this system have a function to detect whether an web page update is worth for users.
(3)Development of an Information Retrieval System for Video-Based Learning Materials
In this system, video material is time coded by matching with manually transcribed speech data. Using time coded speech data, an information retrieval system of video-based learning materials was developed. This system offers a full-text retrieval, and replays retrieved video clips in which query terms are contained. -
Research on development of retrieval and classification system of documents on the Web which is based on analysis of teaching text books.
Grant number：13558012 2001 - 2003
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
NAKAYAMA Minoru, MUROTA Masao, NISHIKATA Atsuhiro, SHIMIZU Yasutaka, TAKAHIRO Aoyagi
Grant amount：\9200000 （ Direct Cost: \9200000 ）
The purpose of this study is to compare performance among developed subject classification methods for educational Web re-sources.
Three methods are vector space model (VSM) using degree of cosine similarity, vector distance on the self-organizing map (SOM) and three layer percptron (MLP). The document vectors were estimated by the term feature vectors which were extracted from the teaching guidelines based on the singular value decomposition method (SVD).
The 403 teaching schemes were prepared as the test documents for the subject discrimination. The recall rate, precision rate and Fl measure as the classification performance measure, were compared across three methods. The recall rate using MLP is the highest for most subjects. The highest precision rate among the methods depend on subject. As a result, F1 measure as total performance index of most subjects are the highest for the method using MLP.
According to the results, the subject classification methods for educational Web resources by using multi layer perceptron (MLP) is tested to achieye better performance. Ten classification methods and 403 test documents were prepared, then classification perfor-mance was compared among conditions by the F1 measure.
As a result, it was examined effectiveness of singular value decomposition (SVD) to extract term feature from term-document matrix as description characteristics of the national teaching guideline. The highest performance of classification method was the use of MLP which trained with all term features extracting from SVD when document feature was estimated by terms appering unique subject.
Also, it was suggested that there were significant differences of document feature components between correct and incorrect classified documents. -
天体観測教育用バーチャルリアリティ・ディスプレイシステムの開発に関する研究
Grant number：13780114 2001 - 2002
日本学術振興会 科学研究費助成事業 若手研究(B)
青柳 貴洋
Grant amount：\1700000 （ Direct Cost: \1700000 ）
本研究は、「星空の観測」をコンピュータとバーチャルリアリティを組み合わせることにより補助するシステムを開発および評価することを目的とした。
本年度は、下記の2点について、前年度に開発をしたシステムをふまえた上で研究をすすめた。
●システムハードウェアの可般化、小型化
●電子星座盤システムへのナビゲーション機能の追加
まず、昨年度に開発した電子星座盤システムを、ノート型コンピュータに移植して、外で持ち歩けるようなシステム構成にした。ハードウェアのシステム構成は下記の通りである。ノート型パソコン、ハンディ型のトラックボールコントローラシースルー型のヘッドマウンテッドディスプレイ、方位センサーからなり、パソコン部分は背中に背負うことにより、移動可能な方式にした。システムはバッテリーでの動作が可能であり、屋外でも使用できる。また、前年度自作した方位センサーを、市販のUSB接続の方位センサーに置き換えた。これにより、電子星座盤のコンピュータに負荷をかけることなく、使用者の視線の方向を取得できるようになった。次に、ノート型パソコン上で動作する電子星座盤に、学習者の利用上有効なナビゲーション機能を追加した。学習者は、目的の星座または惑星を画面上で指定する。すると、画面上に方向が矢印で表示され、簡単に目的の星座または惑星へ到達することができる。
本システムの学習上の利用法を考察し、実用性についての検討を行うことが今後の課題となる。 -
情報モラルと情報関連著作権サーバの開発と運用
Grant number：12558010 2000 - 2002
日本学術振興会 科学研究費助成事業 基盤研究(B)
清水 康敬, 榎本 聡, 室田 真男, 中山 実, 西方 敦博, 青柳 貴洋
Grant amount：\8300000 （ Direct Cost: \8300000 ）
インターネットは社会的に大きな課題を与えることになり、私達が知らない間に情報通信ネットワーク犯罪に巻き込まれることにもなりかねない状況となっている。しかし、インターネットがあまりにも急速に進展したために、(1)法的にどのようなことが許されているのか、あるいは、(2)法的に許されても、どのようなことが他人に迷惑を掛ける恐れがあるのか、(3)より好ましいインターネットを利用するマナーとはどのようなことか、等について私達は習得していない。
そこで、本研究では、情報通信ネットワーク社会で必要となる情報モラルと、情報に関連する著作権に関する学習サーバを構築することを目的として、今年度は、学校教育に関連する著作権について学習する教材を作成する計画であった。
しかし、本年度新設された基盤研究(S)に申請した研究課題が採択されたため、わずかの期間で本研究は中止することになった。したがって、本研究の成果は、情報モラル教育教材の在り方と情報化に関連した著作権に関する種々のケースの調査について検討を開始した段階までを行い終了した。そのため、本研究における今年度の研究目標を十分に達成するまでには至らなかった。 -
インターネットの教育利用における発信者側でのアクセス制御に関する研究
Grant number：11878030 1999 - 2000
日本学術振興会 科学研究費助成事業 萌芽的研究
青柳 貴洋
Grant amount：\900000 （ Direct Cost: \900000 ）
本研究では、小中学校の教師が、情報をインターネット上に発信する際に、公開先を簡単に指定し、情報発信における安全性を向上させるシステムを開発することを目的とした。
現在、小中学校でインターネットへの情報発信時における指針がどのようになっているかの事前調査をふまえて、アクセス制御機能の実現のためのシステム設計および作成を行なった。
その結果、学校の教師などの、専門家でない発信者が情報をインターネットに公開する際、その受信範囲を簡単に指定できるアクセス制御ソフトウェアを開発した。アクセス制御の仕組みが異なるタイプ1とタイプ2の2種類を開発した。タイプ1は、発信側ソフトウェアと受信用専用ブラウザからなる。タイプ1では、情報発信者が発信側ソフトウェアで受信範囲を設定すると、webサーバー上のファイルが暗号化される。これにより、受信が許可されたホスト/ドメインからの専用ブラウザでのアクセスのみが可能となる。タイプ2は、タイプ1と共通のユーザーインターフェースを持つ発信側ソフトウェアからなる。タイプ2では、情報発信者が受信範囲を設定すると、webサーバーのアクセス制御機能が適切に設定される。本論文のソフトウェアを使用すれば、webサーバー上のコンテンツの公開範囲を教育機関に限定したり、地域内の学校だけに限定したりすることができる。これにより、学校等からインターネットへ情報発信する際に、望む範囲にだけ情報を公開することができるシステムを実現した。 -
RESEARCH ON KEY WORDS SYSTEMATIZATION FOR INFORMATION RETRIEVAL OF EDUCATIONAL RESOURCE ON THE INTERNET
Grant number：11680210 1999 - 2000
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
NAKAYAMA Minoru, MASAO Murota, NISHIKATA Atsuhiro, SHIMIZU Yasutaka, AOYAGI Takahiro
Grant amount：\3400000 （ Direct Cost: \3400000 ）
The aim of this research is to efficient categorization of Internet information for school teaching. This thesis conducts categorizing websites to subjects-units, based on the analysis of term-frequencies in teaching textbooks.
A term-document matrix is generated by extracting terms from unit-documents with morphological analysis and summarizing terms' frequency. Each element of this matrix is the frequency of every term in every class unit. Methods to extract feature vectors of terms and documents from the adjusted matrix using SVD (Singular Value Decomposition), and to composite feature vectors of arbitrary documents from the terms' vectors are established. A suitable class-unit for the document is estimated based on the similarity of these feature vectors.
A test-collection including over 120 websites, each of which has an answer made by high-school teachers, was used for the evaluation. Parameters and variables in the procedures, such as, which word classes to use, how to adjust the term-document matrix, the dimension size of feature vectors, etc. were optimized based on this evaluation. Results were given as a list of unit-titles in descending order of similarity between the site's feature vector and the units' vectors.
To illustrate the structure of websites, SOM (Self Organizing Map), which is a kind of a non-supervised neural network learning, is used. As a result, the textbook concept space was visualized, and mapping every page that constructs an arbitrary site showed how the site-pages were distributed in this space. The validity of this map is also discussed and guidelines in reading these maps are shown.
In conclusion, a document classification specialized to educational information was done. Methods to extract feature vectors from descriptions in textbooks and to composite vectors of arbitrary documents are established. Matching class-units of the document is acquired by comparing similarities between the feature vectors. Visualization of categorizing results and website-structures are also done using SOM.It is shown that using these methods, categorization and visualization of websites or documents is feasible. -
Research on development of evaluation method and learning effectiveness in the multi-media educational system by using emotional and biological information.
Grant number：10558020 1998 - 2000
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B).
NAKAYAMA Minoru, MASAO Murota, NISHIKATA Atsuhiro, SHIMIZU Yasutaka, AOYAGI Takahiro
Grant amount：\10000000 （ Direct Cost: \10000000 ）
Eye-movements, blinking and pupil size respond to visual or audio stimulus to require information processing. It is well known pupil size increase with task difficulty. We investigated whether their changes are correlated and can be indices of mental activity. First experiment, audio instruction was presented while gazing and following a marked point which moved periodically in the central point and a point on concentric circle. Audio instructions asked to recall memorized word, cap verses or oral calculation. Second experiment, subjects took part in driving simulation game with same audio tasks. Pupil size, blinking and eye-movements were observed in both experiments.
In the first experiment, the averaged pupil sizes and blinking rate significantly increased with visual angle of gazing and following task, and audio instructions. The gazing time and saccadic responses for the target decreased in response to audio instructions. In the second experiment, pupil sizes and blinking also significantly increased in response to audio instructions. The gazing time and saccadic responses also significantly decreased in response to audio instructions.
From these results, it suggested eye movement model for evaluating mental activity, which was based on correlations between blinking time and gazing time, and between blinking time and saccade occurrence time. For verifying this model, the correlations among them were examined under some eye movement conditions. This verification provided the evidence that pupil, blinking and eye-movement responses can be indices of mental activity. -
A study about construction of Internet learning support system and operative evaluation
Grant number：10308005 1998 - 2000
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A).
SHIMIZU Yasutaka, MUROTA Masao, NISHIKATA Atsuhiro, NAKAYAMA Minoru, AOYAGI Takahiro
Grant amount：\28900000 （ Direct Cost: \28900000 ）
A lot of information is offered to Internet, and there is much information to be useful for learning. However, there are many cases that are not readable to a child student so that it is had much work a kanji.
So, in this study, we developed a system to convert kanji notation of Internet into according to learning automatically. By this study, a child student comes to understand a kanji, but a demand has a system to convert into sentence expression to be suited for a child automatically from teachers of the school spot.
It was based on "the face for Chinese- and Japanese-style readings of Chinese characters" that "school year other kanji kana allotment list" and the Agency for Cultural Affairs which the development Education Ministry of the kanji notation automatic notation conversion function which met a school year established and made "a school year other kanji kana conversion dictionary."
These ten phases of dictionary (general from a kindergarten) is divided into three kinds (a kanji unit, a compound word unit, school year writing together use) according to a conversion method.
I made a database of the Web page, which was useful for development learning of learning information offering system, and then the system, which I could search, was developed. By this system, even primary schoolchildrern could seem to utilize it, and the search item did it with "school year" and two items of "a subject." In addition, the kanji notation, which I put together in a level and hope of a learning person, can because this system fuses with a kanji kana automatic conversion system according to a school year.
In a development book study of a no conversion function and a harmful information filtering function, in the Web site that did not expect conversion (site of a kanji, for example), the Web site where the function that I did not convert into and a harmful term were used for developed the function that I did not display.
As a result evaluation that this system was effective for practical use in a class was provided. This system is utilized in a lot of schools currently in addition to above. -
A system of Internet learning information and a study about development guideline
Grant number：10400015 1998 - 2000
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B).
SHIMIZU Yasutaka, MUROTA Masao, NISHIKATA Atsuhiro, NAKAYAMA Minoru, ICHIKAWA Ken, AOYAGI Takahiro
Grant amount：\3600000 （ Direct Cost: \3600000 ）
In this study, a basis of technique to categorize was established by contents of Web site sponsored with Internet by a school year and a subject, relation with a subject unit.
By this technique, we resolve a description every each unit of a textbook into a term by morpheme analysis and demand an element and a line to do by appearance frequency in each unit of each term, and it is technique extracted by a characteristic vector of a term/a unit with it by the value resolution peculiar.
A unit to fall under was estimated by it being compared resemblance degree with a characteristic vector of each unit demanded by a textbook with a demanded vector by arbitrary information to judge Web site contents to be it.
And it was made what we could divide into a category to a unit in a subject clear if a term extracted from one part of a textbook of existing social studies was used.
We understood that it was achieved high original distinction rate as a result that a post teacher evaluated the result.
And it is the plan that other, school year distinction, a subject input contents of all the textbooks of the every company which is to be published during this year into according to a unit, it is to be extracted a characteristic vector by this technique about a unit of each in order to let this result develop in this study.
And we evaluate technique to divide into a category by it, and it is a plan to examine of practical use. -
遠隔学習システムに関する研究
Grant type：Competitive
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Study on analysis of electromagnetic wave scattering
Grant type：Competitive
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電波散乱抑制に関する研究
Grant type：Competitive
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電波吸収体の解析に関する研究
Grant type：Competitive
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Analysis of electromagnetic wave absorbers
Grant type：Competitive
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Distance learning systems
Grant type：Competitive