KINDAI UNIVERSITY


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HIROKAWA Noriyasu

Profile

FacultyDepartment of Human Factors Engineering and Environmental Design / Graduate School of Biology-Oriented Science and Technology
PositionProfessor
Degree
Commentator Guidehttps://www.kindai.ac.jp/meikan/1114-hirokawa-noriyasu.html
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Last Updated :2020/11/25

Education and Career

Education

  •  - 1993 , Osaka University, Graduate School, Division of Engineering
  •  - 1991 , Osaka University, Faculty of Engineering
  •   1987 04  - 1991 03 , Osaka University, School of Engineering
  •   1991 04  - 1993 03 , Osaka University, Graduate School of Engineering

Academic & Professional Experience

  •   2016 04 ,  - 現在, Faculty of Biology-Oriented Science and Technology, Kindai University
  •   2007 04 ,  - 2016 03 , Faculty of Biology-Oriented Science and Technology, Kindai University
  •   2003 04 ,  - 2007 03 , Faculty of Biology-Oriented Science and Technology, Kindai University
  •   1993 04 ,  - 1998 03 , Osaka University

Research Activities

Research Areas

  • Life sciences, Rehabilitation science
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Machine elements and tribology
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Design engineering

Research Interests

  • Human Factors Engineering, Universal Design, mechanical systems, optimization, design optimization, optimal design, design engineering

Published Papers

  • Influence of Seating Surface Rising Trajectory on the Standing Burden in Stand-Assist Chairs, Tomiyama, H, Hirokawa, N, Kitayama, I, Ohmasa, M, Advanced Experimental Mechanics, Advanced Experimental Mechanics, 4, 163 - 167, Aug. 2019 , Refereed
  • Exercise Effect of a Chair with a Forward-Declined Seat and a Footrest, Itose, K, Yamamoto, T, Hirokawa, N, Advanced Experimental Mechanics, Advanced Experimental Mechanics, 1, 257 - 261, Sep. 2016 , Refereed
  • The effects of air cushion on the buffering performance of a marine fender made of hard rubber, Tadashi Shibue, Takashi Hayami, Mitushi Ohmasa, Noriyasu Hirokawa, Proceedings of the International Offshore and Polar Engineering Conference, Proceedings of the International Offshore and Polar Engineering Conference, 2016-January, 696 - 700, Jan. 01 2016
    Summary:© Copyright 2016 by the International Society of Offshore and Polar Engineers (ISOPE). Fenders are used for the protection of ship hull from impact forces caused at the berthing to a quay, by their buffering effects. The aim of this study is to introduce air cushioning effects to the fender design by using numerical simulation method. We estimate the buffering performances of a small rubber sphere based on the numerical simulation of a drop weight test by changing its internal air pressure. Then, a small scale rectangular rubber block with internal array of spherical holes is also checked changing their internal air pressure. Finally, the buffering performance is estimated by the maximum reactive force and converted energy amount.
  • Flow Characteristics of Thermo-Fluid Wood Powder by Hot Extrusion Process, Sawai, T, Imamura, H, Hirokawa, N, Kajimoto, T, Journal of JSEM 2015, Journal of JSEM 2015, 15, s7 - s14, Jul. 2015 , Refereed
  • Optimiatin Method of a Japanese Keypad Location for Flick Input on a Smartphone, HIROKAWA Noriyasu, Iwamoto, H, Nakayama, M, Shibue, T, Hayami, T, Sawai, T, Ohmasa, M, Journal of JSEM, Journal of JSEM, 15, s125 - s131, Jul. 2015 , Refereed
  • Evaluation of Ease in Carrying Object using Acceleration Sensor, 廣川敬康, 岩根敬弘, 田中淑記, 渋江唯史, 速水尚, 澤井徹, 大政光史, 9th International Symposium on Advanced Science and Technology in Experimental Mechanics (2014), 9th International Symposium on Advanced Science and Technology in Experimental Mechanics (2014), Nov. 2014 , Refereed
    Summary:日常生活での運搬動作においては,人によって運搬する場面や荷物の形状が異なり,持ちにくいという不便が生じる.段ボールとバケツを対象として,加速度センサを用いた実験を行い,揺れが低減される荷物の運搬方法を検討した.
  • 蓄熱温室システムにおける潜熱蓄熱板の最適設置方法の検討, Hirokawa, N, Sawai, T, Fujii, M, Sugino, K, Amano, A, スマートプロセス学会誌, スマートプロセス学会誌, 3(5), 316 - 322, Sep. 2014 , Refereed
  • Thermo-Fluid Phenomena of Torrefied Woody Biomass and Optimum Molding Condition of Torrefied Wood Briquette, Sawai, T, Hirokawa, N, Kajimoto, T, Ichino, Y, Journal of JSEM 2014, Journal of JSEM 2014, 14, s7 - s12, Jul. 2014 , Refereed
  • Effect of the cross-sectional shape on the buffering performance of hard rubber, Tadashi Shibue, Takeshi Kajiya, Ryohei Shiba, Takashi Hayami, Toru Sawai, Mitsushi Ohmasa, Noriyasu Hirokawa, Kazuyuki Kato, Proceedings of the International Offshore and Polar Engineering Conference, Proceedings of the International Offshore and Polar Engineering Conference, 926 - 931, Jan. 2014 , Refereed
    Summary:Fender has been used for the protection of ship hull from impact forces caused at the berthing to a quay, by its shock absorbing effects. It is also useful to avoid damages to the passengers and crew, and to protect the quay. In this study, the effects of cross sectional shape of a fender on its buffering capability are examined based on the drop weight tests and the numerical simulation with FEM. This is useful for the development of a fender with high performance buffering capability. Copyright © 2014 by the International Society of Offshore and Polar Engineers (ISOPE).
  • Usability of Flick Input with Fit-key on Smartphone, 廣川敬康, 渋江唯史, 速水尚, 澤井徹, 大政光史, 8th International Symposium on Advanced Science and Technology in Experimental Mechanics (2013), 8th International Symposium on Advanced Science and Technology in Experimental Mechanics (2013), Nov. 2013 , Refereed
    Summary:スマートフォンでの日本語入力においてはフリック入力が用いられ,従来の携帯電話のトグル入力よりも負荷が大きくなるが,「フィットキー」と呼ばれる機能により付加を軽減することができる.日本語入力をしたときの筋電図によってフィットキー機能の有用性を評価した.
  • Falling Behavior Simulation of a Seated Human Body on a Carriage at Experimental Collision, 渋江唯史, 小畑忠司, 速水尚, 澤井徹, 大政光史, 廣川敬康, 加藤一行, Proceedings of the Twenty-second (2013) International Offshore and Polar Engineering Conference, Proceedings of the Twenty-second (2013) International Offshore and Polar Engineering Conference, 750 - 755, Jul. 2013 , Refereed
    Summary:高速船の衝突時に,着席している乗客の安全性を評価した.実験では高速船内の乗客の安全性を確保するために低速における衝突実験を行った.船速と乗客の挙動について,数値シミュレーションにより比較した.
  • Kinematic Analysis of the Plastic Ankle Foot Orthosis Using Force Sensor, Kitayama, I, Kawauchi, T, Takahaya, R, Hirokawa, N, Journal of JSEM 2013, Journal of JSEM 2013, 13, s217 - s221, Jul. 2013 , Refereed
  • Falling Behavior Simulation of a Standing Human Body on a Carriage at Experimental Collision, to Simulate a Collision Between a High Speed Ship and a Qury, 渋江唯史, 三角理恵, 速水尚, 澤井徹, 大政光史, 廣川敬康, Proceedings of the Twenty-second (2012) International Offshore and Polar Engineering Conference, Proceedings of the Twenty-second (2012) International Offshore and Polar Engineering Conference, 747 - 752, Jun. 2012 , Refereed
    Summary:高速船の衝突時に,起立している乗客の安全性を評価した.実験では高速船内の乗客の安全性を確保するために低速における衝突実験を行った.船速と乗客の挙動について,数値シミュレーションにより比較した.
  • Reduction in Energy Consumption for Pretreatment Process and Transportation of Pulverized Wood Fuel, NISHI Kenji, SAWAI Toru, OHMASA Mitsushi, HIROKAWA Noriyasu, SHIBUE Tadashi, KAJIMOTO Takeshi, スマートプロセス学会誌 = Journal of smart processing, スマートプロセス学会誌 = Journal of smart processing, 1(3), 21 - 22, May 20 2012
  • Effect of chip aspect ratio on hydraulic transportation of woody biomass by Hilly Terrain Pipelines, Mitsushi Ohmaska, Noriyasu Hirokawa, Toni Sawai, Takeshi Kajimoto, Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 78(793), 1483 - 1494, 2012 , Refereed
    Summary:The unused biomass such as residues left on forest floor and unused portions of farm crops is considered as the most promising domestic resources in Japan. The utilization of unused biomass contributes to the environmental protection of forests as well as the reduction in exhaustion of carbon dioxide. To promote the utilization of woody biomnass generated in forests and hilly agricultural areas, the efficiency for the transportation across hilly district regions has to be improved. In (he present study, the hydraulic transportation system of wood chips by means of liquid film flow in sloped pipeline is proposed. The transportation limit of wood chips with various aspect ratios is investigated by using the test section imitating the hi1l temlin pipcline The results obtained are as follows The maximum flow rate of wood chips is caused by the occurrence of hydraulic jump in horizontal flow, and is greatly afl'ectcd by the liquid film flow rate and aspect ratio of wood chips. The analytical model to predict the stagnation of wood chips is presented. and it is found that the model gives a fairly good agreement with the experimental results of maximum how rate of wood chips. © 2012 The Japan Society of Mechanical Engineers.
  • Falling behavior simulation of a standing passenger on a high speed ship at the collision accident, Tadashi Shibue, Takashi Hayami, Tohru Sawai, Mitushi Ohmasa, Noriyasu Hirokawa, Kenji Nishi, Proceedings of the International Offshore and Polar Engineering Conference, Proceedings of the International Offshore and Polar Engineering Conference, 858 - 864, Sep. 19 2011
    Summary:This paper presents a series of numerical simulation of a falling behavior of a standing passenger on a high speed ship at collision. A three dimensional FE (Finite Element) model of human body is used with reduced degrees of freedom to obtain the accuracy level which is required for the evaluation through the ship design within an allowable calculation time, say one day. Transient behavior of the human body at collision is estimated by using an explicit FE code (LS-DYNA, Japan Research Institute 2003) to see the effects of hand support, facing direction and friction between shoes and floor. The interaction between a human body and seats are considered based on an example of seat arrangement. Copyright © 2011 by the International Society of Offshore and Polar Engineers (ISOPE).
  • Falling Behavior Simulation of a Seated Passenger on a High Speed Ship at Accidental Collision, 渋江唯史, 速水尚, 澤井徹, 大政光史, 廣川敬康, Proceedings of the Twentieth (2010) International Offshore and Polar Engineering Conference, Proceedings of the Twentieth (2010) International Offshore and Polar Engineering Conference, Jun. 2010 , Refereed
    Summary:高速船の衝突時に,着席していた乗客の挙動を数値シミュレーションした.限られた演算時間で実用的な計算精度を得るために自由度を低減した人体の3次元解析モデルを用いた.衝突時の人体の挙動に及ぼす,人体と座席の間の摩擦や座席間隔などの影響を陽解法の有限要素法を用いて評価した.
  • Spatio-Temporal Structure of Gas-Liquid Interface at Flooding for Two Inlet Devices of Gas Flow, 澤井 徹, 大政 光史, 廣川 敬康, 加治 増夫, Journal of JSEM, Journal of JSEM, 9, 34 - 40, Dec. 2009 , Refereed
  • Optimal Design by using Response Surface Method and Introduction of Cumulative Function Approximation, 廣川 敬康, 溶接学会誌, 溶接学会誌, 73(3), 5 - 12, Apr. 2004
    Summary:最適設計における計算コストを提言するための方法である応答曲面法についての解説を行い,その一種として著者らが開発を行っている適応的累積関数近似法について紹介した.
  • Multidisciplinary Design Optimization Method for Link Mechanisms, Kikuo Fujita, Noriyasu Hirokawa, Masafumi Inoue, Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, 67(659), 2372 - 2380, 2001 , Refereed
    Summary:Optimal design of a link mechanism determines configuration and geometry of intermediate connectors so as that minimize the driver’s capacity, system cost and so forth under the assigned follower’s motion. Since its mathematical formulation is obviously multidisciplinary and mini-max type under time-dependence of link motion, any conventional optimization techniques have difficulties to seek the optimal design solution. This paper proposes an efficient design optimization algorithm for the multidisciplinary design optimization of link mechanisms by combining non-hierarchic coupled system decomposition, which consists of the iteration of partial optimization of divided subproblems and coordination of such partial solutions, and mini-max relaxation. Further, successive quadratic programming (SQP) is utilized as a mathematical programming technique by inheriting Hessian approximation of the Lagrangian function across its iterative executions. Its application to the multidisciplinary design problem of a link mechanism used in hydraulic shovels, which is modeled and formulated based on skeleton based kinematic analysis and beam-theory based strength analysis, shows more than about four times of speed-up and robust performance as compared with a conventional optimization method. © 2001, The Japan Society of Mechanical Engineers. All rights reserved.
  • Total Design Optimization of Multi-Link Suspension System for Vehicle Handling and Stability, Kikuo Fujita, Noriyasu Hirokawa, Shinsuke Akagi, Takanori Hirata, Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, 65(637), 3861 - 3868, 1999 , Refereed
    Summary:This paper discusses the design problem of vehicles using multi-link suspension system with the aim of totally optimizing vehicle handling and stability. Since this problem includes many evaluation items, and multi-link suspension system has interconnected behavior, the optimization is so complicated. An efficient and computable model is indispensable for compromising the total optimization. This paper investigates a hierarchical structure of objectives, introduces appropriate simulation models for respective items, and formulates a mathematical optimization model based on them. Further, we apply a genetic algorithm based optimization method to this problem. The genetic algorithm is based on Simple GA and introduces several extensions such as fitness function for constrained multi-objective optimization problem, similarity-based selection, direct crossover within side constraints, etc. The result of optimization calculation shows the validity of the optimization model and the optimization algorithm as a mathematical computation based design methodology. © 1999, The Japan Society of Mechanical Engineers. All rights reserved.
  • Muscle Contraction Simulation based on Molecular Potential THeory, NAKAMACHI Eiji, HIROKAWA Noriyasu, TAMURA Youjiro, 58(551), 1093 - 1099, Jul. 1992 , Refereed
  • Effectiveness of a Balance Chair for Maintaining a Seating Posture During Light-Duty Work, Noriyasu Hirokawa, Takahiro Tanaka, Ken'ichi Itose, Tadashi Shibue, Takashi Hayami, Toru Sawai, Mitsushi Ohmasa, ADVANCES IN PHYSICAL ERGONOMICS AND HUMAN FACTORS, ADVANCES IN PHYSICAL ERGONOMICS AND HUMAN FACTORS, 489, 213 - 224, 2016 , Refereed
    Summary:This study discusses the effectiveness of using a balance chair and adjusting a desk height and working position for maintaining seating posture during light-duty work. It is important for a worker to maintain good posture to improve work efficiency and protect his or her health. However, the worker's body trunk tends to lean forward unconsciously when he or she is working on an ordinary chair. Meanwhile, a person sitting on a balance chair, which comprises a forward-declined seat and a knee pad, can maintain a posture that resembles that of standing. This study measures the body trunk angles of a subject performing light-duty work while seated on an ordinary chair and a balance chair and discusses the influence of desk height and working position.
  • Study on the safety of a patient who stands up from a chair with a crutch, Noriyasu Hirokawa, Eri Nishiyama, Noriko Hasegawa, Ken-ichi Itose, Tadashi Shibue, Takashi Hayami, Toru Sawai, Mitsushi Ohmasa, 6TH INTERNATIONAL CONFERENCE ON APPLIED HUMAN FACTORS AND ERGONOMICS (AHFE 2015) AND THE AFFILIATED CONFERENCES, AHFE 2015, 6TH INTERNATIONAL CONFERENCE ON APPLIED HUMAN FACTORS AND ERGONOMICS (AHFE 2015) AND THE AFFILIATED CONFERENCES, AHFE 2015, 3, 74 - 81, 2015 , Refereed
    Summary:This study investigates the safety and ease with which a patient stands up from a chair using a crutch, based on the trajectory of the center of gravity (CG) of the body and subjective impressions. In the study, three participants are made to stand up from a chair using a pair of crutches in seven postures that are combinations of different foot positions, crutch positions, body positions, and eye lines to consider their effects. When standing up from the chair, the CG of the body is measured by a stabilometer, and the safety and ease of standing up are determined from the trajectories, their lengths, and subjective impressions. This study suggests that standing up from the chair with a crutch position that is nearer to the body than normal is appropriate. (C) 2015 The Authors. Published by Elsevier B.V.

Conference Activities & Talks

  • Writing Height Analysis of a Blackboard considering Physical Load to a Teacher and Students' Vision, Hirokawa, N, Nakatani, S, Ohmasa M, Proceedings of 13th International Symposium on Advanced Science and Technology in Experimental Mechanics (ISEM'18),   2018 11
  • Usability of a Blackboard considering Physical Load and Sight Analysis based on Writing Height, HIROKAWA Noriyasu, NAKATANI Shogo,   2018 06
  • Working Conditions for Maintaining a Seating Posture during Working with a Personal Computer on a Balance Chair, Hirokawa, N, Toyoda, Y, Proceedings of 12th International Symposium on Advanced Science and Technology in Experimental Mechanics (ISEM'17),   2017 11
  • Effectiveness of a Rubber Band for Improving the Usability of a Smartphone, HIROKAWA Noriyasu, Sasaki, Y, Tsumura, Y, Nishigaki, T, Ohmasa, M, Proceeding of The 2nd Asian Conference on Ergonomics and Design (ACED2017),   2017 06
  • Examination of a Seat Angle in an Exercise Effect by a Chair with a Forward-Declined Seat and a Footrest, Itose, K, Yamamoto, T, Hirokawa, N, Proceedings of 11th International Symposium on Advanced Science and Technology in Experimental Mechanics (ISEM'16),   2016 11
  • Posture for Avoiding a Text Neck and Improving the Usability in Operating a Smartphone, Hirokawa, N, Azuma, T, Itose, K, Shibue, T, Hayami, T, Sawai, T, Ohmasa, M, Proceedings of 11th International Symposium on Advanced Science and Technology in Experimental Mechanics (ISEM'16),   2016 11
  • Effectiveness of a balance chair for maintaining a seating posture during light-duty work, Hirokawa, N, Tanaka, T, Itose, K, Shibue, T, Hayami, T, Sawai, T, Ohmasa, M, Proceedings of the AHFE 2016 International Conference on Physical Ergonomics and Human Factors,   2016 07
  • A Chair with Exercise Effect by Combination of a Forward-declined Seat and a Footrest, HIROKAWA Noriyasu, 261,   2016 03
  • Effectiveness of an Accessory to Hold a Smartphone to Improve the Usability in Inputting Characters, Hirokawa, N, Sakai, A, Sawa, U, Itose, K, Shibue, T, Hayami, T, Sawai, T, Ohmasa, M, Proceedings of 10th International Symposium on Advanced Science and Technology in Experimental Mechanics (ISEM'15),   2015 11
  • Chair with exercise effect by a forward-declined seat and a footrest, Itose, K, Hirokawa, N, Yamamoto, N, Proceedings of 10th International Symposium on Advanced Science and Technology in Experimental Mechanics (ISEM'15),   2015 11
  • Study on the safety of a patient who stands up from a chair with a crutch, Hirokawa, N, Nishiyama, E, Hasegawa, N, Itose, K, Shibue, T, Hayami, T, Sawai, T, Ohmasa, M, Proceedings of 6th International Conference on Applied Human Factors and Ergonomics (AHFE 2015) and the Affiliated Conferences, AHFE 2015,   2015 07
  • Evaluation of Ease in Carrying Object using Acceleration Senso, Hirokawa, N, Shibue, T, Hayami, T, Sawai, T, Ohmasa, M, Proceedings of 9th International Symposium on Advanced Science and Technology in Experimental Mechanics (ISEM'14),   2014 11
  • Optimal Location of Japanese Keypad for Flick Input on Smartphone, Hirokawa, N, Iwamoto, H, Nakayama, M, Shibue, T, Hayami, T, Sawai, T, Ohmasa, M, Proceedings of 9th International Symposium on Advanced Science and Technology in Experimental Mechanics (ISEM'14),   2014 11
  • Educating Students in Universal Design using a Digital Mannequin, Hirokawa N, Nishigaki T, Proceedings of the 3rd International Conference on Design Engineering and Science (ICDES 2014),   2014 08
  • Study on Transportation of Japanese-style bedding using a Digital Mannequin, 廣川 敬康, 三井健太郎, 渋江 唯司, 速水 尚, 澤井 徹, 大政 光史, 廣瀬 尚三, 日本人間工学会成25年度関西支部講演会,   2013 12 , 日本人間工学会
    Summary:デジタルマネキンを用いて,ふとんに持ち手をつけた場合の運びやすさに関する研究を行った.
  • Usability of Flick Input with Fit-key on Smartphone, Hirokawa, N, Shibue, T, Hayami, T, Sawai, T, Ohmasa, M, Proceedings of 8th International Symposium on Advanced Science and Technology in Experimental Mechanics (ISEM'13),   2013 11
  • Usability Analysis of Character Input with Smartphone Fit Key System, 廣川 敬康, 渋江 唯司, 速水 尚, 澤井 徹, 大政 光史, ヒューマンインタフェースシンポジウム2013,   2013 09 , ヒューマンインタフェース学会
    Summary:フィットキー機能を有するスマートフォンにおいて日本語入力のしやすさを調べるために筋電図計測実験を行った.
  • Project Practice on Universal Design by using Digital Mannequin, 廣川 敬康, 西垣 勉, 大政 光史, 廣瀬 尚三, 日本人間工学会第54回大会,   2013 06 , 日本人間工学会
    Summary:デジタルマネキンを用いたユニバーサルデザイン・CAD演習におけるプロジェクト型演習について紹介した.
  • Education on Universal Design by using Digital Mannequin in Kinki University, 廣川 敬康, 西垣 勉, 大政 光史, 廣瀬 尚三, 日本人間工学会平成24年度関西支部大会,   2012 12 , 日本人間工学会
    Summary:デジタルマネキンを用いたユニバーサルデザイン・CAD演習の取り組みを紹介した
  • Education of Universal Design by using Digital Mannequin, 廣川 敬康, 西垣 勉, 大政 光史, 廣瀬 尚三, 日本機械学会 第22回設計工学・システム部門講演会,   2012 09 , 日本機械学会 第22回設計工学・システム部門講演会
    Summary:デジタルマネキンを用いたユニバーサルデザイン集合教育の取り組みを紹介した.
  • Discussion on Input Method of Smart Phone based on EMG, 廣川 敬康, 渋江 唯司, 速水 尚, 澤井 徹, 大政 光史, ヒューマンインタフェースシンポジウム2012,   2012 09 , ヒューマンインタフェース学会
    Summary:スマートフォンでの文字入力時の母指の姿勢を分析し,筋電図計測実験を行って文字入力のしやすさを検討した.
  • Ergonomic Design of Shower Chair by using Digital Manikins, 廣川 敬康, 渋江 唯司, 速水 尚, 澤井 徹, 大政 光史, 廣瀬 尚三, 日本人間工学会第53回大会,   2012 06 , 日本人間工学会
    Summary:コンピュータマネキンを用いて介護用シャワーチェアからの立ち上がり動作の解析と人間工学設計を行った.
  • State of Thumb in Operating Cellular Phone Key, 廣川 敬康, 渋江 唯司, 速水 尚, 澤井 徹, 大政 光史, ヒューマンインタフェースシンポジウム2011,   2011 09 , ヒューマンインタフェース学会
    Summary:携帯電話のキー操作をする際の母指の姿勢を分析した.
  • Ergonomic Design of Daily Use Products by using Computer Manikins, 廣川 敬康, 渋江 唯司, 速水 尚, 澤井 徹, 大政 光史, 廣瀬 尚三, 日本人間工学会第52回大会,   2011 06 , 日本人間工学会
    Summary:コンピュータマネキンを用いた日常生活用品の人間工学設計を行った.
  • Usability of Cellular Phone Key Layout based on EMG, 廣川 敬康, 渋江 唯司, 速水 尚, 澤井 徹, 大政 光史, ヒューマンインタフェースシンポジウム2010,   2010 09 , ヒューマンインタフェース学会
    Summary:筋電図計測による携帯電話の押しやすいキー配置に関する研究を行った.
  • Ergonomic Design with Digital Human and its Integration with EMG, 廣川 敬康, 渋江 唯司, 速水 尚, 澤井 徹, 大政 光史, 廣瀬 尚三, 日本人間工学会第51回大会,   2010 06 , 日本人間工学会
    Summary:デジタルヒューマンと筋電図計測との統合化による人間工学設計の高度化の方法について検討した.
  • EMG of Flexor Muscles in Operating Cellular Phone Keys, 廣川 敬康, 渋江 唯司, 速水 尚, 澤井 徹, 大政 光史, ヒューマンインタフェースシンポジウム2009,   2009 09 , ヒューマンインタフェース学会
    Summary:携帯電話のキーの押しやすさを検討するために母指屈曲筋の筋電図計測を行った.
  • Key Layout Usability of Cellular Phone by using EMG, Hirokawa, N, Takasuga T, 日本機械学会 第18回設計工学・システム部門講演会,   2008 09 , 日本機械学会
    Summary:筋電図計測を行って携帯電話のキーの押しやすさについて検討した.
  • EMG of Extensor Pollicis Brevis Muscle in Operating Cellular Phone Key, Hirokawa, N, Takasuga T, ヒューマンインタフェースシンポジウム2008,   2008 09 , ヒューマンインタフェース学会
    Summary:携帯電話のキー操作時における短母指外転筋の筋電図計測を行った.
  • Design Optimization by Integration of Evolutionary Search and Cumulative Approximation, Fujita, K, Ushiro, T, Hirokawa, N, Proceedings of ASME 2005 Design ngineering Technical Conferences and Computers and Information in Engineering Conference,   2005 09
  • Mini-Max Type Robust Optimal Design Combined with Function Regularization, Hirokawa, N, Fujita, K, Fam C. T, Proceedings of 6th World Congress on Structural and Multidisciplinary Optimization (WCSMO6),   2005 05
  • Computational Cost Improvement of Robust Optimal Design by Cumulative Function Approximation, Hirokawa, N, Fujita K, Ushiro, T, 日本機械学会 第6回最適化シンポジウム,   2004 12 , 日本機械学会
    Summary:適応的累積関数近似を用いてロバスト最適設計における計算効率を改善するための方法を提案した.
  • Applicability of Cumulative Function Approximation to Robust Optimal Design for Improving its Computational Cost, Hirokawa, N, Fujita, K, Ushiro, T, 日本機械学会 第14回設計工学・システム部門講演会,   2004 11 , 日本機械学会
    Summary:適応的累積関数近似を利用したロバスト最適設計における計算効率の改善法の汎用性について検討した.
  • Computation Cost Saving of Robust Optimal Design by Cumulative Function Approximation, Hirokawa, N, Fujita, K, Ushiro, T, Proceedings of the Third China-Japan-Korea Joint Symposium on Optimization of Structural and Mechanical Systems (CJK-OSM3),   2004 10
  • Mini-max Type Robust Optimal Design with Hyper Sphere Variation Model and Quadratic Response Surface Method, Hirokawa, N, Fujita, K, 日本機械学会第16 回計算力学講演会(神戸),   2003 11 , 日本機械学会
    Summary:設計変数と設計パラメータに関する変数変動域の超球体表現と、目的関数と制約条件の2 次応答曲面近似により、関数の限界点を厳密に求めることによるミニ・マックス型ロバスト最適設計法の構成を示した。
  • Accuracy Enhancement of Mini-Max Type Robust Optimal Design by Suitabilization, 廣川 敬康, 藤田 喜久雄, Fam Chiou Tzi, 日本機械学会第13 回設計工学・システム部門講演会(金沢),   2003 10 , 日本機械学会第13 回設計工学・システム部門講演会(金沢)
    Summary:ミニ・マックス型ロバスト最適設計におけるサンプリング結果に対して、単調増加関数によるフィルターを用いた適切化変換を行って高精度の2 次応答曲面を構成することによる、より厳密なロバスト最適設計法を提案した。
  • A Proposal of Computational Cost Improvement of Robust Optimal Design by Cumulative Function Approximation, Hirokawa, N, Ushiro, T, Fujita, K, 日本機械学会 2003年度年次大会,   2003 08 , 日本機械学会
    Summary:ロバスト最適設計におけるサンプリングの近似関数上での実施と、最適化計算結果に基づいたサンプル点追加による近似関数の精度向上とを繰り返すことによる、ロバスト最適設計における計算効率の改善方法についての構想を示した。
  • Computational Cost Improvement of Robust Optimal Design by Cumulative Function Approximation, Hirokawa, N, Fujita, K, Ushiro, T, Proceedings of 10th AIAA/ISSMO Multi-Disciplinary Analysis and Optimization Conference,   2003 08
  • The Potential Role of Cache Mechanism for Complicated Design Optimization, Hirokawa, N, Fujita, K, Proceedings of the Second China-Japan-Korea Joint Symposium,   2002 11
  • Mini-max Type Formulation of Strict Robust Design Optimization under Correlative Variation, Hirokawa, N, Fujita, K, Proceedings of the 2002 ASME Design Engineering Technical Conferences,   2002 09
  • Voronoi Diagram Based Blending of Quadratic Response Surfaces for Cumulative Global Optimization, Hirokawa, N, Fujita, K, Proceedings of 9th AIAA/ISSMO Symposium on Multi-Disciplinary Analysis and Optimization,   2002 09
  • Multidisciplinary Design Optimization of Link Mechanisms by Combining Decomposition and Mini-Max Relaxation, Fujita, K, Hirokawa, N, Inoue, M, Proceedings of the 2000 ASME Design Engineering Technical Conferences,   2000 09
  • Voronoi Diagram Based Cumulative Approximation for Engineering Optimizatio, Fujita, K, Hirokawa N, Tachikawa, T, Proceedings of 8th AIAA/USAF/NASA/ISSMO Symposium on Multi-Disciplinary Analysis and Optimization,   2000 06
  • Multi-Objective Optimal Design of Automotive Engine using Genetic Algorithm, Fujita, K, Hirokawa, N, Akagi. S, Kitamura, S, Yokohata, H, Proceedings of the 1998 ASME Design Engineering Technical Conference,   1998 09
  • Design Optimization of Multi-Link Suspension System for Total Vehicle Handling and Stability, Fujita, K, Hirokawa, N, Akagi, S, Hirata, N, Proceedings of 7th AIAA/USAF/NASA/ISSMO Symposium on Multi-Disciplinary Analysis and Optimization,   1998 09
  • Genetic Algorithm Based Optimal Planning Method of Energy Plant Configurations, Fujita, K, Akagi, S, Yoshida, K, Hirokawa, N, Proceedings of the 1996 ASME Design Engineering Technical Conferences,   1996 08
  • Hybrid Approach for Optimal Nesting Using a Genetic Algorithm and a Local Minimization Algorithm, Fujita, K, Akagi, S, Hirokawa, N, Proceedings of the 1993 ASME Design Automation Conference,   1993 09

Works

  • Methodology for Emergent Synthesis

Misc

  • Mini-Max Type Robust Design Optimization based on Design Variation Hyper Sphere and Quadratic Response Surface, 廣川 敬康, 藤田喜久雄, 14, 85, 100,   2004 09 , Refereed
    Summary:関数の限界点に着目したミニ・マックス型ロバスト最適設計法を提案し,変数の変動領域を超球体表現するとともに,関数を2次応答曲面近似することによって,限界点を厳密かつ効率的に求めることによる解法を示した.
  • Design optimization by integration of evolutionary search and cumulative approximation, Kikuo Fujita, Tomoki Ushiro, Noriyasu Hirokawa, PROCEEDINGS OF THE ASME INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2005, VOL 2, PTS A AND B, Paper Number DETC2005-85245, 305, 319,   2005
    Summary:This paper proposes a new design optimization framework by integrating evolutionary search and cumulative function approximation. While evolutionary algorithms are robust even under multi-peaks, rugged natures, etc., their computational cost is inferior to ordinary schemes such as gradient-based methods. While response surface techniques such as quadratic approximation can save computational cost for complicated design problems, the fidelity of solution is affected by density of samples. The new framework simultaneously performs evolutionary search and constructs response surfaces. That is, in its early phase the search is performed over roughly but globally approximated surfaces with the relatively small number of samples, and in its later phase the search is performed intensively around promising regions, which are revealed in the preceded phases, over response surfaces enhanced with additional samples. This framework is expected to be able to robustly find the optimal solution with less sampling. An optimization algorithm is implemented by combining a real-coded genetic algorithm and a Voronoi diagram based cumulative approximation, and it is applied to some numerical examples for discussing its potential and promises.
  • Mini-Max Type Robust Optimal Design Combined with Function Regularization (共著), Proceedings of 6th World Congress on Structural and Multidisciplinary Optimization (WCSMO6), Paper Number 388,   2005
  • Computation Cost Saving of Robust Optimal Design by Cumulative Function Approximation (共著), Proceedings of the Third China-Japan-Korea Joint Symposium on Optimization of Structural and Mechanical Systems (CJK-OSM3), 553-558,   2004
  • Computational Cost Improvement of Robust Optimal Design by Cumulative Function Approximation (共著), Proceedings of 10th AIAA/ISSMO Multi-Disciplinary Analysis and Optimization Conference, Paper Number AIAA-2004-4381,   2004
  • The Potential Role of Cache Mechanism for Complicated Design Optimization(共著), Proceedings of the Second China-Japan-Korea Joint Symposium on Optimization of Structural and Mechanical Systems, pp.331-336,   2002
  • Mini-max Type Formulation of Strict Robust Design Optimization under Correlative Variation(共著), Proceedings of the 2002 ASME Design Engineering Technical Conferences, Paper Number DETC2002, DAC-34041,   2002
  • Voronoi Diagram Based Blending of Quadratic Response Surfaces for Cumulative Global Optimization(共著), Proceedings of 9th AIAA/ISSMO Symposium on Multi-Disciplinary Analysis and Optimization, Paper Number AIAA-2002-5460,   2002
  • Voronoi Diagram Based Comulative Approximation for Engineering Optimization (共著), Proceedings of 8th AIAA/USAF/NASA/ISSMO Symposium on Multi-Disciplinary and Optimization, Paper Number, AIAA-2000-4919,   2000
  • Multidisciplinary Design Optimization of Link Mechanisms by Combining Decomposition and Mini-Max Relaxation (共著), Proceedings of the 2000 ASME Design Engineering Technical Conferences, Paper Number, DETC2001, DAC-14527,   2000
  • Design Optimization of Multi-Link Suspension System for Total Vehicle Handling and Stability(共著), Proceedings of 7th AIAA/USAF/NASA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, 3, 620, 630,   1998
  • Multi-Objective Optimal Design of Automotive Engine using Genetic Algorithm(共著), Proceedings of the 1998 ASME Design Engineering Technical Conferences, Paper Number DETC98, DAC-5799,   1998
  • Genetic Algorthm Based Optimal Planning Method of Energy Plant Configurations(共著), Proceedings of the 1996 ASME Design Engineering Technical Conferences, Paper Number 96-DETC, DAC-1464,   1996
  • Hybrid Approach for Optimal Nesting Using a Genete Algorithm and a Local Minimization Algorithm(共著), Proceedings of the 1993 ASME Design Automation Confevence, DE-65, 1, 477, 484,   1993

Research Grants & Projects

  • Study on Robust design Optimization of Mechanical Systems
  • Study on Optimal Design of Large Scale Mechanical Systems
  • Study on Object Modeling and Design Methodology for Product Design