HIROKAWA Noriyasu

Researcher Information

Degree

• Doctor(Engineering)（Osaka University）
• Master(Engineering)（Osaka University）

URL

http://www.waka.kindai.ac.jp/tea/hmn/

J-Global ID

• 200901087660438846

Research Interests

• Human Factors Engineering   Universal Design   機械システム   最適化   設計最適化   最適設計   設計工学   mechanical systems   optimization   design optimization   optimal design   design engineering   

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

Academic & Professional Experience

• 2016/04 - Today  Kindai UniversityFaculty of Biology-Oriented Science and Technology
• 2007/04 - 2016/03  Kindai UniversityFaculty of Biology-Oriented Science and Technology
• 2003/04 - 2007/03  Kindai UniversityFaculty of Biology-Oriented Science and Technology
• 1998/04 - 2003/03  大阪大学 助手 大学院工学研究科
• 1993/04 - 1998/03  Osaka University

Education

• 1991/04 - 1993/03  Osaka University  Graduate School of Engineering  産業機械工学専攻
• 1987/04 - 1991/03  Osaka University  School of Engineering  機械工学科

Association Memberships

• JAPANESE SOCIETY FOR ENGINEERING EDUCATION   JAPAN SOCIETY FOR DESIGN ENGINEERING   HUMAN INTERFACE SOCIETY   JAPAN ERGONOMICS SOCIETY   THE JAPAN SOCIETY OF MECHANICAL ENGINEERS   

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 4 163 - 167 2019/08 [Refereed]
  
• Exercise Effect of a Chair with a Forward-Declined Seat and a Footrest

  Itose, K; Yamamoto, T; Hirokawa, N

  Advanced Experimental Mechanics 1 257 - 261 2016/09 [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 SPRINGER INT PUBLISHING AG 489 213 - 224 2194-5357 2016 [Refereed]
   

  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.
• 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 2016-January 696 - 700 1098-6189 2016/01 

  © 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 15 s7 - s14 2015/07 [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 15 s125 - s131 2015/07 [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) 2014/11 [Refereed]
   

  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 3 (5) 316 - 322 2186-702X 2014/09 [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 14 s7 - s12 2014/07 [Refereed]
  
• Effect of Tree Species and Comminution Method on Comminution Energy of Woody Biomass

  NISHI Kenji; OHMASA Mitsushi; HIROKAWA Noriyasu; SAWAI Toru; SHIBUE Tadashi; KAJIMOTO Takeshi

  Journal of Smart Processing Smart Processing Society for Materials, Environment & Energy (High Temperature Society of Japan) 1 (2) 51 - 57 2186-702X 2014/03 [Refereed]
   

  In order to reduce the emission of greenhouse gases, much attention has been focused on energy utilization of biomass in recent years. The promotion of the utilization of domestic woody biomass contributes not only to the improvement of energy selfsufficiency, but also to the environmental protection of forests and undeveloped woodlands near populated areas or satoyamas in Japan. Typical woody biomass derived from Japanese forests and satoyamas are Japanese Cedar and Konara. When woody biomass is utilized as biomass fuel, it is important to examine the energy consumptions for pretreatments such as comminution and reforming. In this study, using Konara, Japanese Cedar, and Balsa, the effects of tree species, comminution methods, and semicarbonization of the woody biomass on comminution energy are investigated. The results obtained in this study are as follows. (1) In the case that water content is less than a fiber saturation point, the comminution energy for three species is expressed as a function of water content. In the case that water content exceeds a fiber saturation point, comminution energy for three species is expressed as a function of density. The comminution energy can be estimated by using the present empirical equations within ±50% accuracy. (2) Regarding the comminution property of semi-carbonized woody biomass, for the wood region, the empirical equations of work index depend on the comminution methods regardless of tree species and sieve of screen. For the semi-carbonized and carbonized regions, the empirical equation of work index is presented regardless of tree species, comminution methods, and sieve of screen. The comminution energy can be estimated by using the present empirical equations within ±60% accuracy.
• 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 926 - 931 1098-6189 2014/01 [Refereed]
   

  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) 2013/11 [Refereed]
   

  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 750 - 755 1098-6189 2013/07 [Refereed]
   

  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 The Japanese Society for Experimental Mechanics 13 s217 - s221 1346-4930 2013/07 [Refereed]
   

  In this study, we aimed to understand the dynamics of a lower limb plastic ankle-foot orthosis (PAFO) during walking in terms of the extent to which it assists or restricts the user's gait. For this propose, we developed a load measurement system that can directly measure the loading on the PAFO. The system is worn by the user and incorporates four sensors: six-axis force sensors at three points (two in the shoe sole and one in the orthosis) and a single-axis force sensor at the ankle. The top section of a PAFO was divided into upper and lower sections at the back, essentially eliminating its deformation during walking, and a six-axis force sensor was incorporated at this point. The two six-axis force sensors were placed between the orthosis and the shoe (one at the tip of the toes and one at the heel). These sensors allowed for measuring all external forces applied to the orthosis during walking. By using a PAFO incorporating the developed measurement system, in this study we investigated the behavior of the forces applied to the orthosis with respect to variations in walking conditions, namely cadence (gait speed) and stride length.
• Effect of Chip Aspect Ratio on Hydraulic Transportation of Woody Biomass

  大政 光史; 廣川 敬康; 澤井 徹; 梶本 武志

  日本機械学会論文集Ｂ編 日本機械学会 78 (793) 1483 - 1494 0387-5016 2012/09 [Refereed]
   

  バイオマス資源となる木質チップの林地における簡易な搬出方法として，管路内の液膜流に同伴させて輸送するシステムを提案し，システム運転時に問題となる管路閉塞によるチップの輸送限界について検討した．より現実的な水力輸送を検討するために木質チップのアスペクト比を変化させ，チップ形状がチップ最大輸送流量に及ぼす影響を明らかにした．さらに，最大輸送流量を予測するための解析方法を提示するとともに，水力輸送システム運転時のエネルギー評価について考察した．
• 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 747 - 752 1098-6189 2012/06 [Refereed]
   

  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 1 (3) 21 - 22 2186-702X 2012/05
• 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 858 - 864 1098-6189 2011/09 

  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).
• 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

  Journal of High Temperature Society 高温学会 37 (2) 63 - 70 0387-1096 2011/03 [Refereed]
  
• 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 4 713 - 720 1098-6189 2010/06 [Refereed]
   

  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．
• Flow Characteristics in Vertical Upward Gas-Liquid Two-Phase Flow with Surfactant Additives : 2nd Report, Gas-Liquid Interfacial Structure

  SAWAI Toru; OHMASA Mitsushi; HIROKAWA Noriyasu; KAJI Masuo; FUJII Masao

  Journal of JSEM 日本実験力学会 10 (1) 31 - 38 1346-4930 2010/03 [Refereed]
  
• 界面活性剤添加垂直上昇気液二相流における流動特性 ― 第1報，圧力損失低減 ―

  澤井 徹; 大政 光史; 廣川 敬康; 加治 増夫; 藤井 雅雄

  日本実験力学会誌 日本実験力学会 10 (1) 23 - 30 2010/03 [Refereed]
  
• 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 日本実験力学会 9 (4) 34 - 40 1346-4930 2009/12 [Refereed]
  
• ボロノイ図による累積関数近似と適応的大域最適化

  廣川 敬康; 藤田喜久雄

  日本機械学会論文集 C編 日本機械学会 72 (718) 1759 - 1768 2006/06 [Refereed]
   

  ボロノイ図を利用した適応的累積関数近似法を提案し，それを用いた適応的大域最適化計算法を構成した．
• Enhancement of Mini-Max Type Robust Optimal Design using Function Regularization

  Hirokawa N; Fujita K; Fam ChiouTzi

  日本機械学会論文集 C編 日本機械学会 72 (717) 1621 - 1629 0387-5024 2006/05 [Refereed]
   

  ロバスト最適性を厳密に考慮するためのミニ・マックス型ロバスト最適設計法に対し，その高精度化を実現するための適切化変換を用いた方法を提案し，具体的なロバスト最適設計問題に適用して，その有効性を確認した．
• Optimal Design by using Response Surface Method and Introduction of Cumulative Function Approximation

  廣川 敬康

  溶接学会誌 JAPAN WELDING SOCIETY 73 (3) 5 - 12 0021-4787 2004/04 [Invited]
   

  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 67 (659) 2372 - 2380 0387-5024 2001 [Refereed]
   

  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.
• 遺伝的アルゴリズムによる機械システムの最適化法とそのエンジン諸元の最適設計への適用

  藤田 喜久雄; 廣川 敬康; 赤木 新介; 平田 隆教

  日本機械学会論文集C編 65 (630) 821 - 828 0387-5024 1999/02 [Refereed]
  
• 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 65 (637) 3861 - 3868 0387-5024 1999 [Refereed]
   

  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.
• 遺伝的アルゴリズムによるエネルギープラントの機器構成設計法に関する研究

  藤田喜久雄; 赤木新介; 廣川敬康; 吉田清峰

  日本機械学会論文集C編 64 (617) 354 - 361 0387-5024 1998/01 [Refereed]
  
• 形態の段階的詳細化と視点管理による製品設計の枠組とその展開(第3報:形態に基づく形状モデリング法)

  藤田 喜久雄; 赤木 新介; 廣川 敬康; 不破 正人

  日本機械学会論文集C編 62 (600) 3363 - 3370 0387-5024 1996/08 [Refereed]
  
• Product Design Framework with Configuration Network and its Viewing Control (2nd Report, Development and Application of the Framework)

  FUJITA Kikuo; AKAGI Shinsuke; HIROKAWA Noriyasu

  Transactions of the Japan Society of Mechanical Engineers. Series C. The Japan Society of Mechanical Engineers 62 (600) 3355 - 3362 0387-5024 1996/08 [Refereed]
   

  A framework of computational design method and modeling has been proposed for the layout and geometry design of complicated mechanical systems, which is named "configuration network and its viewing control" in the first report. In this paper, we present its application to a design problem of air-conditioner units in order to demonstrate the validity and effectiveness of the framework. In the design process, the components must be located in the entire package, and pipes should also be arranged in it, so as to satisfy the functional requirements, ease of production and maintenance, etc. The computational models for hierarchical design process, design objects including geometry modeling, evaluation of design results, and synthesis operations are developed for such a practical design problem. By using those computational models, a design result of an air-conditioner unit is demonstrated to show the validity and effectiveness of the framework.
• 遺伝的アルゴリズムと極小値探索アルゴリズムとのハイブリッド化による板取り問題の一解法

  藤田 喜久雄; 赤木 新介; 廣川 敬康

  日本機械学会論文集C編 59 (564) 2576 - 2583 0387-5024 1993/08 [Refereed]
  
• Muscle Contraction Simulation based on Molecular Potential THeory

  NAKAMACHI Eiji; HIROKAWA Noriyasu; TAMURA Youjiro

  Transactions of the Japan Society of Mechanical Engineers Series B The Japan Society of Mechanical Engineers 58 (551) 1093 - 1099 0387-5008 1992/07 [Refereed]
   

  In this paper, a numerical method for analysing muscle contraction has been derived based on the modified Mitsui's self-induced translation model. Discussion is focused on a molecular potential distributed along the actin and myosin filaments. Three potentials are introduced: the periodic potential along the actin filament, the self-induced potential on myosin heads and the elastic potential of heavy meromyosin rods. The energy of ATPase generates the self-induced potential between myosin and actin filaments, and forces the myosin to slide along the actin filament. The isotonic contraction is simulated. Numerical results of myosin motion show good agreement with recent experimental results of myosin slide distance from l0 nm to 200 nm in vitro motility assay.

Conference Activities & Talks

• デジタルヒューマンを用いた人間工学設計のための関節トルク比に基づく身体的負荷の評価とその軽減  [Not invited]

  齋藤大和; 廣川敬康; 豊田航

  日本人間工学会第63回大会  2022/07
• Physical Load Evaluation Based on Joint Torque Ratio for Ergonomic Design by Using Digital Human  [Not invited]

  Saito Y; Hirokawa N

  2021年度日本人間工学会関西支部大会  2021/12
• デジタルヒューマンを用いた津波避難用シェルターの乗り込みと船内での姿勢の評価  [Not invited]

  廣川敬康; 藤井優矢; 野田淳二; 藤田浩司

  日本人間工学会第62回大会  2021/05
• 人間のドア開閉動作の経路情報に基づいた移動ロボットによる動作の再現  [Not invited]

  喜田悠斗; 中川秀夫; 廣川敬康

  2020年度日本人間工学会関西支部大会  2020/12
• 母指の関節角度計測に基づくスマホアクセサリ使用時のスマートフォンの片手操作性の評価  [Not invited]

  新海航平; 濵口泰一; 益田薫平; 廣川敬康

  日本人間工学会第61回大会  2020/06
• 2台のKinectセンサによる人の動作に基づくロボットの起動生成  [Not invited]

  喜田悠斗; 中川秀夫; 廣川敬康

  2019年度日本人間工学会関西支部大会  2019/12
• 立位でのデスクワーク時におけるエクササイズ効果の向上に関する研究  [Not invited]

  廣川 敬康; 芦田 格

  日本人間工学会第60回大会  2019/06
• 座面軌道が異なる起立補助椅子において足の位置による起立負荷への影響  [Not invited]

  富山 大基; 廣川 敬康; 北山 一郎; 大政 光史

  日本人間工学会平成30年度関西支部大会  2018/12
• Writing Height Analysis of a Blackboard considering Physical Load to a Teacher and Students' Vision  [Not invited]

  Hirokawa, N; Nakatani, S; Ohmasa M

  Proceedings of 13th International Symposium on Advanced Science and Technology in Experimental Mechanics (ISEM'18)  2018/11
• 起立補助椅子の座面軌道が及ぼす起立負荷への影響  [Not invited]

  富山 大基; 廣川 敬康; 北山 一郎; 大政 光史; 中原 悠希; 深牧 将

  日本人間工学会第59回大会  2018/06
• Usability of a Blackboard considering Physical Load and Sight Analysis based on Writing Height  [Not invited]

  HIROKAWA Noriyasu; NAKATANI Shogo

  日本人間工学会第59回大会  2018/06
• 起立補助椅子における起立動作の筋活動量とトルクの分析と評価  [Not invited]

  廣川 敬康; 富山 大基; 廣川 敬康; 北山 一郎; 大政 光史

  日本人間工学会平成29年度関西支部大会  2017/12
• Working Conditions for Maintaining a Seating Posture during Working with a Personal Computer on a Balance Chair  [Not invited]

  Hirokawa, N; Toyoda, Y

  Proceedings of 12th International Symposium on Advanced Science and Technology in Experimental Mechanics (ISEM'17)  2017/11
• スマホでの日本語文字入力時における負荷分析とスマホアクセサリによる負荷軽減  [Not invited]

  廣川 敬康; 佐々木 祐輝; 津村 祐貴; 大政 光史

  ヒューマンインタフェースシンポジウム2017  2017/09
• Effectiveness of a Rubber Band for Improving the Usability of a Smartphone  [Not invited]

  HIROKAWA Noriyasu; Sasaki, Y; Tsumura, Y; Nishigaki, T; Ohmasa, M

  Proceeding of The 2nd Asian Conference on Ergonomics and Design (ACED2017)  2017/06
• 肘掛が連動する 起立補助椅子による起立負荷の 軽減  [Not invited]

  富山 大基; 谷渕 友紀; 廣川 敬康; 大政 光史

  日本人間工学会第58回大会  2017/06
• 座位時に下肢の筋活動を促すことによりエクササ イズ効果をもたらす椅子の開発  [Not invited]

  廣川 敬康; 糸瀬 健一; 豊田 悠人; 橋本 彩加

  日本人間工学会第58回大会  2017/06
• 起立補助椅子の補助力と肘掛の変化による起立負荷への影響  [Not invited]

  大政 光史; 高岡 亮介; 生嶋 悠輔; 渋江 唯司; 速水 尚; 廣川 敬康; 澤井 徹

  日本人間工学会平成28年度関西支部大会  2016/12
• デスクワーク時に下肢にエクササイズ効果を与える椅子使用時におけるストレス評価  [Not invited]

  糸瀬 健一; 豊田 悠人; 橋本 彩加; 廣川 敬康

  日本人間工学会平成28年度関西支部大会  2016/12
• Examination of a Seat Angle in an Exercise Effect by a Chair with a Forward-Declined Seat and a Footrest  [Not invited]

  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  [Not invited]

  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
• スマホ首の回避と使いやすさの向上を目指したスマホの操作姿勢  [Not invited]

  廣川敬康; 東敬之; 糸瀬健一; 渋江唯司; 速水尚; 大政光史

  ヒューマンインタフェースシンポジウム2016  2016/09
• 前傾座面と足置きにより下肢にエクササイズ効果を与える椅子の負荷測定  [Not invited]

  糸瀬 健一; 山本 倫彰; 川井 智憲; 秋月 敬太; 廣川 敬康

  実験力学会2016年度年次講演会  2016/09
• Effectiveness of a balance chair for maintaining a seating posture during light-duty work  [Not invited]

  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
• デスクワーク作業時に下肢にエクササイズ効果を与える椅子の効果向上  [Not invited]

  糸瀬 健一; 山本 倫彰; 川井 智憲; 秋月 敬太; 廣川 敬康

  日本人間工学会第57回大会  2016/06
• バランスチェアの利用と作業位置の調整によるデスクワーク時の姿勢保持  [Not invited]

  廣川 敬康; 田中 隆裕; 糸瀬 健一; 渋江 唯司; 速水 尚; 澤井 徹; 大政 光史

  日本人間工学会第57回大会  2016/06
• A Chair with Exercise Effect by Combination of a Forward-declined Seat and a Footrest  [Not invited]

  HIROKAWA Noriyasu

  261  2016/03
• 座面の前傾により高いエクササイズ効果を得られる椅子の効果の検証  [Not invited]

  糸瀬 健一; 川井 智憲; 秋月 敬太; 山本 倫彰; 廣川 敬康

  日本人間工学会平成27年度関西支部大会  2015/12
• Effectiveness of an Accessory to Hold a Smartphone to Improve the Usability in Inputting Characters  [Not invited]

  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  [Not invited]

  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  [Not invited]

  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
• 松葉杖使用者の椅子からの起立動作時における安定性に関する研究  [Not invited]

  廣川敬康; 西山絵理; 長谷川典子; 糸瀬健一; 渋江唯司; 速水尚; 澤井徹; 大政光史

  日本人間工学会第56回大会  2015/06
• 前傾した座面と足置きによりエクササイズ効果をもたらす椅子の開発  [Not invited]

  廣川敬康; 糸瀬健一; 山本倫彰

  日本人間工学会第56回大会  2015/06
• Evaluation of Ease in Carrying Object using Acceleration Senso  [Not invited]

  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  [Not invited]

  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
• スマートフォンのテンキーの配置位置の最適化  [Not invited]

  廣川敬康; 岩本浩弥; 中山雅崇; 速水尚; 澤井徹; 渋江唯司; 大政光史

  ヒューマンインタフェースシンポジウム2014  2014/09
• Educating Students in Universal Design using a Digital Mannequin  [Not invited]

  Hirokawa N; Nishigaki T

  Proceedings of the 3rd International Conference on Design Engineering and Science (ICDES 2014)  2014/08
• 加速度センサを用いた荷物の運搬動作の解析と運搬しやすさの向上に関する研究  [Not invited]

  廣川敬康; 岩根敬弘; 田中淑記; 渋江唯司; 速水尚; 澤井徹; 大政光史

  日本人間工学会第55回大会  2014/06
• Study on Transportation of Japanese-style bedding using a Digital Mannequin  [Not invited]

  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  京都工芸繊維大学  日本人間工学会
   

  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  [Not invited]

  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  [Not invited]

  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  早稲田大学  ヒューマンインタフェース学会
   

  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  [Not invited]

  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  日本大学生産工学部  日本人間工学会
   

  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  [Not invited]

  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  関西大学  日本人間工学会
   

  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
• 超球体領域における２次応答曲面を用いたミニ・マックス型ロバスト最適設計法  [Not invited]

  廣川敬康; 藤田喜久雄

  日本機械学会 第12回設計工学・システム部門講演会  2012/11
• Education of Universal Design by using Digital Mannequin  [Not invited]

  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  広島大学  日本機械学会 第22回設計工学・システム部門講演会
   

  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  [Not invited]

  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  九州大学  ヒューマンインタフェース学会
   

  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  [Not invited]

  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  九州大学  日本人間工学会
   

  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  [Not invited]

  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  仙台  ヒューマンインタフェース学会
   

  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  [Not invited]

  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  東京  日本人間工学会
   

  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  [Not invited]

  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  滋賀  ヒューマンインタフェース学会
   

  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  [Not invited]

  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  札幌  日本人間工学会
   

  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  [Not invited]

  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  東京  ヒューマンインタフェース学会
   

  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．
• 日本語文ローマ字入力時の打鍵頻度を考慮したPCキーボード用キー配列の検討  [Not invited]

  廣川 敬康; 澤井 徹; 速水 尚; 大政 光史

  平成20年度日本設計工学会関西支部研究発表講演会  2008/11  寝屋川市  日本設計工学会
   

  日本語文ローマ字入力時の打鍵頻度を考慮したPCキーボード用キー配列について検討した．
• Key Layout Usability of Cellular Phone by using EMG  [Not invited]

  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  京都  日本機械学会
   

  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  [Not invited]

  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  吹田市  ヒューマンインタフェース学会
   

  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  [Not invited]

  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  [Not invited]

  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  [Not invited]

  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  栃木  日本機械学会
   

  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  [Not invited]

  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  福岡  日本機械学会
   

  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  [Not invited]

  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  [Not invited]

  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
   

  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  [Not invited]

  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）
   

  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。
• 適応的累積関数近似と大域敵最適化  [Not invited]

  廣川 敬康

  日本機械学会  2003/08  徳島  日本機械学会
   

  サンプル点での解析結果をボロノイ図上で重ね合わせて構成した近似関数による最適化と、その結果に基づくサンプル点追加による近似関数の高精度化とを繰り返すことによる、適応的累積関数近似法の構成を示した。
• A Proposal of Computational Cost Improvement of Robust Optimal Design by Cumulative Function Approximation  [Not invited]

  Hirokawa, N; Ushiro, T; Fujita, K

  日本機械学会 2003年度年次大会  2003/08  徳島  日本機械学会
   

  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  [Not invited]

  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  [Not invited]

  Hirokawa, N; Fujita, K

  Proceedings of the Second China-Japan-Korea Joint Symposium  2002/11
• ボロノイ図に基づく累積的関数近似と適応的大域最適化  [Not invited]

  廣川 敬康; 藤田 喜久雄; 岩瀬 鉄平; 田鶴 洋

  日本機械学会 第5回最適化シンポジウム  2002/10
• Mini-max Type Formulation of Strict Robust Design Optimization under Correlative Variation  [Not invited]

  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  [Not invited]

  Hirokawa, N; Fujita, K

  Proceedings of 9th AIAA/ISSMO Symposium on Multi-Disciplinary Analysis and Optimization  2002/09
• 厳密なロバスト最適設計のためのミニ・マックス型モデルの提案  [Not invited]

  廣川 敬康; 藤田喜久雄

  日本機械学会 2002年度年次大会  2002/09
• 最適設計のためのボロノイ図による適応的累積関数近似法 (第2報：2次近似による局所情報の表現とその効果)  [Not invited]

  廣川 敬康; 岩瀬鉄平; 藤田喜久雄

  日本機械学会 関西支部 第77期定時総会講演会  2002/03
• 最適設計のためのボロノイ図による適応的累積関数近似法  [Not invited]

  藤田 喜久雄; 廣川 敬康; 立川 智哉

  日本機械学会 第10回設計工学・システム部門講演会  2001/11
• 分解法とミニ・マックス緩和によるリンク機構の多領域最適設計法  [Not invited]

  廣川 敬康; 藤田 喜久雄; 井上 正文

  日本機械学会 第4回最適化シンポジウム(OPTIS2000)  2000/10
• Multidisciplinary Design Optimization of Link Mechanisms by Combining Decomposition and Mini-Max Relaxation  [Not invited]

  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  [Not invited]

  Fujita, K; Hirokawa N; Tachikawa, T

  Proceedings of 8th AIAA/USAF/NASA/ISSMO Symposium on Multi-Disciplinary Analysis and Optimization  2000/06
• リンク機構の多領域最適設計における分解法の適用に関する研究  [Not invited]

  廣川 敬康; 藤田 喜久雄; 井上 正文

  日本機械学会 第9回設計工学・システム部門講演会  1999/11
• 機械システムの最適設計問題におけるクラスと遺伝的アルゴリズムの適用性  [Not invited]

  藤田 喜久雄; 赤木 新介; 廣川 敬康

  日本機械学会 第8回設計工学・システム部門講演会  1998/11
• Multi-Objective Optimal Design of Automotive Engine using Genetic Algorithm  [Not invited]

  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  [Not invited]

  Fujita, K; Hirokawa, N; Akagi, S; Hirata, N

  Proceedings of 7th AIAA/USAF/NASA/ISSMO Symposium on Multi-Disciplinary Analysis and Optimization  1998/09
• 遺伝的アルゴリズムによる機械システムの最適化法とそのエンジン設計への適用  [Not invited]

  藤田 喜久雄; 廣川 敬康; 赤木 新介; 平田 隆教

  日本機械学会 第3回最適化シンポジウム  1998/08
• 大規模多目的設計最適化問題の遺伝的アルゴリズムによる一解法  [Not invited]

  藤田喜久雄; 赤木新介; 廣川敬康

  日本機械学会 第7回設計工学・システム部門講演会  1997/11
• マルチリンク式サスペンションを用いる自動車の総合操安性設計のための最適化モデル  [Not invited]

  廣川敬康; 赤木新介; 藤田喜久雄; 仲田真基; 近藤一生; 平田隆教

  日本機械学会 関西支部 第72期定時総会講演会  1997/03
• Genetic Algorithm Based Optimal Planning Method of Energy Plant Configurations  [Not invited]

  Fujita, K; Akagi, S; Yoshida, K; Hirokawa, N

  Proceedings of the 1996 ASME Design Engineering Technical Conferences  1996/08
• 分割法を用いたリンク機構の多領域設計最適化に関する研究  [Not invited]

  藤田喜久雄; 赤木新介; 廣川敬康; 長谷川慎治

  日本機械学会 関西支部 第71期定時総会講演会  1996/03
• コンフィグレーションネットワークとその視点管理に基づく配置設計支援システムに関する研究  [Not invited]

  藤田喜久雄; 赤木新介; 廣川敬康; 塩山章

  日本機械学会 関西支部 第71期定時総会講演会  1996/03
• 遺伝的アルゴリズムによるプラント機器構成設計法に関する研究 (続報)  [Not invited]

  藤田喜久雄; 赤木新介; 廣川敬康; 吉田清峰

  日本機械学会 関西支部 第71期定時総会講演会  1996/03
• 空調機ユニット設計のための配置配管統合化設計支援システムの構築  [Not invited]

  藤田喜久雄; 赤木新介; 廣川敬康; 不破正人

  日本機械学会 関西支部 第70期定時総会講演会  1995/03
• 製品設計における配置配管統合化のための対象モデリング  [Not invited]

  藤田喜久雄; 赤木新介; 廣川敬康

  日本機械学会 第4回設計工学・システム部門講演会  1994/03
• 板取り問題への遺伝的アルゴリズムの適用  [Not invited]

  藤田喜久雄; 赤木新介; 廣川敬康; 吉田清峰

  日本機械学会 第71期通常総会講演会  1994/03
• 配置配管統合化設計におけるコンカレントエンジニアリングの試み  [Not invited]

  藤田喜久雄; 赤木新介; 廣川敬康

  日本機械学会 第71期通常総会講演会  1994/03
• Hybrid Approach for Optimal Nesting Using a Genetic Algorithm and a Local Minimization Algorithm  [Not invited]

  Fujita, K; Akagi, S; Hirokawa, N

  Proceedings of the 1993 ASME Design Automation Conference  1993/09
• 最適板取り問題へのトンネル法の適用  [Not invited]

  藤田喜久雄; 赤木新介; 廣川敬康

  日本機械学会 第3回設計工学・システム部門講演会  1993/03
• 遺伝的アルゴリズムと数理計画法とのハイブリッド化による板取り問題の一解法  [Not invited]

  藤田喜久雄; 赤木新介; 廣川敬康

  日本機械学会 第2回設計工学・システム部門講演会  1992/10

Works

• 創発的シンセシスの方法論

  1996 -2001
• Methodology for Emergent Synthesis

  1996 -2001

MISC

• よくわかる学術用語 生体運動計測

  廣川 敬康  実験力学  17-  (1)  65  -66  2017/03  [Invited]
  
• よくわかる学術用語 ユニバーサルデザイン

  廣川 敬康  実験力学  15-  (4)  328  -329  2015/12  [Invited]
  
• 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  3-  74  -81  2015/07
• J0120103 Numerical Simulation of a Seat Belt under the Dynamic Loading

  SHIBUE Tadashi; Nishiura Ryohei; HAYAMI Takashi; SAWAI Toru; OHMASA Mitsushi; HIROKAWA Noriyasu  Mechanical Engineering Congress, Japan  2014-  "J0120103  -1"-"J0120103-5"  2014/09
• J182011 Model experiments and a numerical simulation for the estimation of falling behavior of a seated passenger on the train at collision

  SHIBUE Tadashi; KAWABE Kazuya; HAYAMI Takashi; SAWAI Toru; OHMASA Mitsushi; HIROKAWA Noriyasu  Mechanical Engineering Congress, Japan  2013-  "J182011  -1"-"J182011-5"  2013/09
• 生体信号計測やデジタルマネキンを利用したユニバーサルデザイン

  廣川 敬康  はりま産学交流会創造例会2013  2013/06  [Invited]
  
• デジタルマネキンを利用したユニバーサルデザイン教育

  廣川 敬康; 西垣 勉  大学教育と情報  (1)  20  -22  2013/06
• 1313 Education of Universal Design by using Digital Mannequin

  HIROKAWA Noriyasu; NISHIGAKI Tsutomu; OHMASA Mitsushi; HIROSE Shozo  設計工学・システム部門講演会講演論文集  2012-  (22)  "1313  -1"-"1313-10"  2012/09
• J121013 Test and measurement with a carriage to simulate the behavior of falling of a bus passenger at collision

  SHIBUE Tadashi; HAYAMI Takashi; SAWAI Toru; OHMASA Mitsushi; HIROKAWA Noriyasu  Mechanical Engineering Congress, Japan  2012-  "J121013  -1"-"J121013-4"  2012/09
• G030074 Structure Analysis on Honeycomb Panel with Press Formed Core

  OHMASA Mitsushi; NISHI Kenji; HIROKAWA Noriyasu; HAYAMI Takashi; SAWAI Toru; SHIBUE Tadashi  Mechanical Engineering Congress, Japan  2012-  "G030074  -1"-"G030074-2"  2012/09
• 620 Biomechanical analysis of plastic ankle foot orthosis

  TAKAHATA Ryoji; KAWAUCHI Tsubasa; KITAYAMA Ichiro; HIROKAWA Noriyasu  関西支部講演会講演論文集  2012-  (87)  "6  -17"  2012/03
• J121012 Falling behavior of the standing passenger with a knob in the hand at sudden stop of a bus

  SHIBUE Tadashi; MISUMI Rie; NISHI Kenji; HAYAMI Takashi; SAWAI Toru; OHMASA Mitsushi; HIROKAWA Noriyasu  Mechanical Engineering Congress, Japan  2011-  "J121012  -1"-"J121012-3"  2011/09
• G030163Effect of Core Size on Rigidity of Honeycomb Panel with Dia-cut Patterned Core

  OHMASA Mitsushi; SUGIMOTO YUichi; NISHI Kenji; HIROKAWA Noriyasu; HAYAMI Takashi; SAWAI Toru; SHIBUE Tadashi  Mechanical Engineering Congress, Japan  2011-  "G030163  -1"-"G030163-2"  2011/09
• 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

  廣川 敬康; 西垣 勉; 大政 光史  デジタルヒューマン技術協議会  2011/08  [Invited]
  
• F116 Assessment of Comminution Energy of Pulverized Wood Fuel

  NISHI Kenji; SAWAI Toru; OHMASA Mitsushi; HIROKAWA Noriyasu; SHIBUE Tadashi; KAJIMOTO Takeshi  National Symposium on Power and Energy Systems  2011-  (16)  153  -154  2011/06
• 803 Energy Consumption for Pretreatment Process of Pulverized Wood Fuel

  NISHI Kenji; HIROKAWA Noriyasu; KAJIMOTO Takeshi; SAWAI Toru; OHMASA Mitsushi; SHIBUE Tadashi  関西支部講演会講演論文集  2011-  (86)  "8  -3"  2011/03
• 802 樹皮の熱流動化現象と押出成形時の流動特性(GS-6・8・9バイオマス(1))

  木ノ本 慶樹; 西 健治; 澤井 徹; 梶本 武志; 渋江 唯司; 廣川 敬康  関西支部講演会講演論文集  2011-  (86)  "8  -2"  2011/03
• Characteristics Comminution of Woody Biomass

  NISHI Kenji; ICHINO Yoshimitsu; SAWAI Toru; OHMASA Mitsushi; HIROKAWA Noriyasu  高温学会誌  36-  (6)  40  -41  2010/11
• 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
• 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)

  Kikuo Fujita; Noriyasu Hirokawa; Shinsuke Akagi; Takanori Hirata  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

• 複合領域システムのロバスト設計のための最適化手法に関する研究

  日本学術振興会：科学研究費助成事業

  Date (from‐to) : 2001 -2002 

  Author : 廣川 敬康

   

  本研究は,機械システムのロバスト最適設計のための最適化手法の開発を目的としたものである.機械システムのロバスト最適設計問題は,元来,設計変数や設計パラメータの変動を考慮した確率最適化問題であり,変数の変動領域における関数の変動を近似関数により推定しつつ,最適化計算を行う必要がある.最終年度である平成14年度は,ロバスト最適解の精度を向上させるために,変動領域において構成する2次近似関数の精度を向上させるための方法と,最適化計算に要する計算コストを低減するために,その大半を占める近似関数を構成する際のサンプリングコストを低減するための方法に関して研究を行い、以下の成果を得た. 1.関数の適切化変換を用いたロバスト最適設計法の構成 ロバスト最適設計においては,変数の変動領域における関数の変動をより高精度の近似関数を用いて近似することが重要である.本研究年度は,サンプル点における関数値を適切化関数を用いて変換することにより,高精度の2次近似関数を構成するための方法を構成した.また,第1年度である平成13年度に構成したミニ・マックス型ロバスト最適設計法に組み込み,数値計算例を通してその有効性を検証した. 2.ボロノイ図による適応的累積関数近似法によるロバスト最適設計法の構成 ロバスト最適設計においては,変数の変動領域における近似関数を構成するためにサンプリングを行う必要があり、その計算コストを低減することが重要である.本研究年度においては、別途,開発しているボロノイ図を用いた累積関数近似法により構成した近似関数上でサンプリングを行うことによって,変動領域における2次近似関数をより少ない計算コストで効率的に構成しつつ,ロバスト最適化計算を行うための方法を提案した.さらに,ミニ・マックス型ロバスト最適設計法に組み込み,数値計算例を通してその有効性を検証した.
• Study on Robust design Optimization of Mechanical Systems

  Date (from‐to) : 2001
• Situation-Directed Modeling Method for Integrating Conceptual Design and Configuration Design

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research

  Date (from‐to) : 1998 -1999 

  Author : FUJITA Kikuo; HIROKAWA Noriyasu

   

  This project studied the modeling framework for mechanical systems design. In the design process of complicated systems, it is necessary to configure system components and spatially arrange them within a certain space, but these two issues must be simultaneously manipulated due to their internal coupling. We introduced the concept of situation-directed reasoning into design representation to coordinatively operate such interdependent issues and to exchange phased design results across different granularity levels and viewing scopes. The research results are summarized as follows: (a) Some scenarios for designing complicated systems by exchanging situations across design phases were reviewed through analysis of design process for mechanism systems. Based on them, we proposed a modeling framework for mechanism systems synthesis, which consists of three layers, mechanism system level, mechanism chain level, mechanism pair level, and explored the synthesis method for chain-type mechanism systems which uses situation-directed reasoning under the modeling layers. (b) We developed a prototype system of computer-aided design system for mechanism systems synthesis to validate the effectiveness and promises of the proposed modeling framework. The system was applied to the design problems of press mechanism and video cassette recorder. It was confirmed that situation-directed reasoning can simulated the revealed scenarios for design problem solving. (c) We analyzed the structure of distributed and coordinative design process toward the next level of situation-directed reasoning, which must be indispensable to scale up it for real design problems. Further, we formulated an agent-based system architecture for concurrent design problem solving.
• Study on Optimal Design of Large Scale Mechanical Systems

  Date (from‐to) : 1998
• Research on Integrated Computer-Aided Design Systems toward Fusion with Engineering Simulation Technologies

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research

  Date (from‐to) : 1996 -1997 

  Author : AKAGI Shinsuke; HIROKAWA Noriyasu; FUJITA Kikuo

   

  This project studied the next-generation integrated CAD systems after various computer simulation technologies have become available in ordinary design activities. While simulation technologies are indispensable for design evaluation, design is natively synthetic activities, and it is necessary to integrate simulation technology outcomes and design synthesis activities. Under this circumstance, we researched into object modeling methods, distributed design systems and optimization techniques. The research results are summarized as follows : (a) A configuration centered modeling framework was proposed as a key technology toward the above integration, which has abilities to manage hierarchical design information, to deduct simulation models and so forth. This modeling was also applied to a design problem of an air-conditioner unit, where some components are arranged and several pipes are routed. (b) An agent-based distributed design system architecture was developed for concurrent design processes of large, complicated systems. This architecture can integrate isolated design systems through computer network in accordance with system structure of engineering systems. An experimental design system was implemented for basic ship design for ascertainment of the architecture. (c) A genetic algorithm based design optimization method was developed for large-scale multi-objective design problems of practical engineering systems, physical phenomena of which are too ill-posed to apply ordinary design optimization methods. This method was applied to the preliminary optimal design problem of an automotive engine. (d) Futher, the issues toward integration of design syntheses in conceptual and configuration phases were discussed with a design problem of chain-type mechanism systems as a forthcoming research direction.
• Multi-processing based computer-aided design systems for real design problems

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research

  Date (from‐to) : 1995 -1996 

  Author : AKAGI Shinsuke; HIROKAWA Noriyasu; HIRANO Toru; FUJITA Kikuo

   

  This project studied multi-processing based computer-aided design systems for real design problems. While the computer support is getting to play more important and essential roles in the product development, the direction of computer technologies shifts from high-speed single CPU systems to multi-processing systems with plural CPUs. The new type of design technology will be necessary to cooperate with such direction for meeting the increasing demands on design automation and so forth. Under this circumstance, we developed a distributed modeling method of design object and design process, an agent-based distributed design system, and several optimization methods which are implemented with multiple CPUs. The research results are summarized as follows : 1.Since real design problems include multi-disciplinary and multi-grained information, any distributed modeling method of design object and design process is indispensable. Configuration, which is a set of declarative conditions between system components and geometric entities, is effective as a media of the modeling method. It has an ability for facilitating computer-supported concurrent engineering. 2.A computer-supported concurrent engineering environment can be established with agent-based knowledge engineering technique. The computer system is implemented via socket communication over a workstation cluster. 3.Since the real design problems have ill-posed characteristics such as a large number of combinatorial conditions, multi-modality, nonlinearity, computational expense in simulation calculations, etc., the combination of genetic algorithms and multi-CPU implementation is successfully applied to the energy plant configuration design problem, the vehicle power train optimization design. Also, a modeling procedure and a decomposition-based optimization method for complicated system design problems are studied, respectively. These results show the feasibility of multi-processing techniques in large-scale design applications. Moreover, they clarify the research direction of multi-processing based computer-aided design systems.
• A Study on Objective Modeling and Multidisciplinary Optimization for Concurrent Engineering

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research

  Date (from‐to) : 1994 -1995 

  Author : AKAGI Shinsuke; HIROKAWA Noriyasu; FUJITA Kikuo

   

  Objective modeling and Multidisciplinary Optimization Technique are studied for Concurrent Engineering Systems through the development of the computer aided design system for several actual design problems. The results obtained are summarized as follows : 1.A framework of computational design method and objective modeling is proposed for layout and geometry design of complicated mechanical systems. In the method, a design object is represented with a set of decorative relationships among various elements of a system i.e., apparatus, piping etc., which is gradually extended form system structure to exact layout and geometry through the design process. The configuration to be designed is made to grow and refined through the design process with evaluating their functions, cost and manufacturability etc. The system developed is applied to the design of an air-conditioning unit, and its validity and effectiveness is ascertained. 2.Multidisciplinary optimization technique is also applied for the design problems of several kind of complicated mechanical systems with referenced to the development on concurrent engineering system. The design problems developed here are link mechanisms, gear drive devices, vehicle power trains etc. In the design process of these products, various aspects must be dealt with concurrently and simultaneously, since they include a large umber of functional disciplines. For example, in the design of link mechanisms, the multidisciplinary modeling and optimization must be applied for its linkage shape synthesis and structural strength design. To formulize and solve the problem, an object-oriented modeling and a generalized reduced optimization technique are applied. And their effectiveness is ascertained. The design technique developed here is also applicable for other various kind of design problems including the above mentioned design.
• A Study on Intelligent CAD Systems based on Hybridization of Artificial Intelligence Approaches and Optimization Techniques

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research

  Date (from‐to) : 1992 -1993 

  Author : AKAGI Shinsuke; HIROKAWA Noriyasu; FUJITA Kikuo

   

  Design methodology for intelligent CAD systems by combining artificial intellignece(AI)techniques and mathematical optimization techniques are studied through the development of the hybrid-type CAD systems for several design problems. The systems developed and their characteristics are summarized as follows : 1. Layout design system for power plants, in which a constraint-directed search procedure is used for fixing the spatial relations among layout components and an optimization technique is used for determining the actual sizes of layout components. 2. Expert System for automatically generating layout constraints which are design conditions in the above layout design system. 3. Integrated CAD system for supporting preliminary design process of aircraft, in which an object-oriented modeling method is used for representing design object and an optimization procedure is used for refinement of a design. 4. Automated optimal shape design system of planar link mechanisms, in which an object-oriented modeling method is used for representing link mechanisms, and symbol processing technique and an algebraic programming language are used for automatically generating the mathematical model for optimization. 5. Hybrid approach for optimal nesting problems using a genetic algorithm and a local minimization algorithm. Through the above studies, the following criteria for hybridization of AI techniques and optimization procedure are concluded. 1. AI techniques are effective for the conceptual and combinatorial aspects of design problems, and optimization techniques are effective for the embodiment and numerical aspects of them. Both of techniques should be hybridized corresponding to the characteristics of respective design problems. 2. The modeling techniques in AI techniques are effective for automatically generating the mathematical models for optimization calculation and for interactively supporting the design process.
• Study on Object Modeling and Design Methodology for Product Design

  Date (from‐to) : 1993
• 機械システムのロバスト最適設計に関する研究
• 大規模機械システムの最適設計に関する研究
• 製品の設計における対象モデリングと設計方法論に関する研究
• デジタルマネキンを用いた人間工学設計・ユニバーサルデザイン
• 生体信号計測に基づく人間工学設計法に関する研究

Other link

researchmap

https://researchmap.jp/read0042818