MISC - MAEDA Yoshinobu

Approach from modeling simulation to address the school bullying problem

前田義信, 小里将矩, 弦巻亜弥, 田中恒彦, 谷賢太朗, 山崎達也

電子情報通信学会大会講演論文集(CD-ROM)   2024   2024

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スマートフォンでの動画視聴時の視線解析-視距離による検討-

王禹萱, 洪晨君, 前田義信, 野村泰伸, 石井雅子

日本生体医工学会大会プログラム・抄録集(Web)   62nd   2023

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Tendencies of search behavior in visual search

橋本帆波, WANG Yuxuan, 野村泰伸, 塚田章, 前田義信

電子情報通信学会技術研究報告(Web)   122 ( 360(CAS2022 61-95) )   2023

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An Attempt to Design an Artificial School Class Game for a Psychological Experiment on Bullying

尾形龍門, 弦巻亜弥, 谷賢太朗, 穴沢幸二, 田中恒彦, 山崎達也, 前田義信

電子情報通信学会技術研究報告(Web)   123 ( 203(NLP2023 29-58) )   2023

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Experimental Investigation of the Probability of Target Detection During Character Search

八田幸大, 橋本帆波, WANG Yuxuan, 野村泰伸, 塚田章, 前田義信

電子情報通信学会技術研究報告(Web)   122 ( 220(NLP2022 39-55) )   2022

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視覚探索時の注視点の動きを制御するネットワークモデル

王禹萱, 橋本帆波, 小澤誠, 野村泰伸, 塚田章, 前田義信

日本生体医工学会大会プログラム・抄録集(Web)   61st   2022

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An Attempt to Design an Artificial School Class Game That Introduces a Teacher’s Perspective

尾形龍門, 近藤秀憲, 谷賢太郎, 神蔵貴久, 赤塚匠, 田中恒彦, 山崎達也, 前田義信

電子情報通信学会技術研究報告(Web)   122 ( 75(CAS2022 1-18) )   2022

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Saccade Extraction from Gaze Point Movement using Discriminant Analysis

WANG Yuxuan, 橋本帆波, 加賀谷文紀, 山崎達也, 前田義信

電子情報通信学会大会講演論文集(CD-ROM)   2022   2022

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An Attempt to Develop an Artificial Classroom Game Considering the Peak-End Rule

近藤秀憲, 尾形龍門, 谷賢太朗, 田中恒彦, 山崎達也, 神藏貴久, 穴沢幸二, 前田義信

電子情報通信学会技術研究報告(Web)   122 ( 253(CAS2022 36-60) )   2022

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An analysis of factors affecting the search time in visual search

橋本帆波, 松井瑞季, 小澤誠, 野村泰伸, 塚田章, 前田義信

日本生体医工学会大会プログラム・抄録集(Web)   60th   2021

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A Consideration on Efficient Visual Search from the Perspective of Complex Networks

前田義信, 小澤誠, 野村泰伸, 塚田章

電子情報通信学会技術研究報告(Web)   120 ( 301(MBE2020 19-25) )   2020

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スマホゲーム中の視線解析 : 画面の大きさによる比較

石井 雅子, 谷 賢太郎, 前田 義信

新潟医療福祉学会誌   19 ( 1 )   65 - 65   2019.10

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3Dプリンタを使用した視覚障がい者向けの挟み将棋用の用具の開発

谷 賢太朗, 田村 剛一, 前田 義信

新潟医療福祉学会誌   19 ( 1 )   109 - 109   2019.10

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Analysis of Web advertisement based on user preference behavior

63   197 - 200   2019.5

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Classification of Gaze Steps during Visual Search into Fixations and Saccades

松井瑞季, 津野将行, 小澤誠, 野村泰伸, 塚田章, 前田義信

電子情報通信学会技術研究報告   119 ( 44(MBE2019 1-15)(Web) )   33‐38 (WEB ONLY) - 38   2019.5

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Classification of fixation and saccade in visual search

松井瑞季, 津野将行, 小寺龍之介, 小澤誠, 野村泰伸, 塚田章, 前田義信

電子情報通信学会技術研究報告   118 ( 416(CAS2018 116-137) )   45‐48   2019.1

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視覚探索時の注視点軌跡の移動長と移動角度について

前田義信, 野村泰伸, 塚田章

日本生体医工学会大会プログラム・抄録集(Web)   58th   ROMBUNNO.PO‐B‐002 (WEB ONLY)   2019

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A Modeling on Eye Movements in Visual Search

前田 義信, 小寺 龍之介, 津野 将行, 小澤 誠, 野村 泰伸, 塚田 章

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   118 ( 242 )   19 - 24   2018.10

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Consideration on Frequency Distribution of Eye Movement in Visual Search

小寺龍之介, 小澤誠, 野村泰伸, 塚田章, 前田義信

電子情報通信学会技術研究報告   118 ( 44(MBE2018 1-6)(Web) )   23‐26 (WEB ONLY) - 26   2018.5

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Gaze-step Simulation on Visual Search of Target Letter

津野将行, 小寺龍之介, 棚橋重仁, 飯島淳彦, 塚田章, 前田義信

電子情報通信学会技術研究報告   118 ( 44(MBE2018 1-6)(Web) )   19‐22 (WEB ONLY) - 22   2018.5

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Estimation of lighting-equipment positions for indoor navigation by visible light communications

117 ( 502 )   163 - 168   2018.3

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Development of Web application that supports Cardio Pulmonary Resuscitation for visual impairments

117 ( 337 )   105 - 108   2017.12

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Error reduction using a particle filter for visible light communication based mobile robot control

117 ( 337 )   53 - 58   2017.12

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Poster Presentation : The Development of Farmwork Management System using Smartglasses

村上 尊哉, 前田 義信, 山﨑 達也

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   117 ( 310 )   55 - 58   2017.11

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Multi agent simulation on change of customer flow line by arrangement of store clerks in home center

116 ( 483 )   49 - 52   2017.3

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Relationship between School-Caste and Behavior Rule of Agent using Multi-Agent Simulation

116 ( 483 )   53 - 57   2017.3

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Basic Study on the "School Caste" Phenomena Using Multi-Agent Simulation

小野 凌輔, 西田 悠, 前田 義信, 松本 慎平, 加藤 浩介, 山岸 秀一

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   116 ( 421 )   99 - 103   2017.1

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Group-Theoretic Consideration of Quadrupedal Locomotion Rhythms Generated by Hardware CPG Models

116 ( 422 )   121 - 126   2017.1

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Influence of incomplete information exchanges on the emergence of money using Yasutomi model

116 ( 422 )   95 - 98   2017.1

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Consideration on Game Property of Rotation-Shogi Game Using Speech Interface

116 ( 421 )   105 - 108   2017.1

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Development of Web application that supports Cardio Pulmonary Resuscitation for visual impairments

19   105 - 108   2017

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D-8-3 Evaluation of evacuation model using quality engineering

OBA Shiori, ITO Nao, MATOBA Ryuichi, HASHIMOTO Yuka, GOMI Nobuyuki, TANI Kentaro, MAEDA Yoshinobu

Proceedings of the IEICE General Conference   2016 ( 1 )   98 - 98   2016.3

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D-8-2 Power interchange modeling by different demand agents

Tani Kentaro, Maeda Yoshinobu, Nakano Keisuke, Numata Hideho, Sengoku Masakazu

Proceedings of the IEICE General Conference   2016 ( 1 )   97 - 97   2016.3

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A-1-21 Relationship between Gait Pattern and Power Supply Reproduced by Hardware Network Model of Neuronal Excitation

Maeda Yoshinobu, Sasagawa Naruki, Maruyama Akihiro

Proceedings of the IEICE Engineering Sciences Society/NOLTA Society Conference   2016   21 - 21   2016.3

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Power interchange modeling using multi-agent system

115 ( 422 )   57 - 60   2016.1

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Basic Study for the Effect of Product Lifespan on Markets using Multi-agent simulation

115 ( 422 )   95 - 99   2016.1

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Reproduction of Quadrupedal Gait Patterns Using a Coupled Hardware Nonlinear Oscillators

小宅智史, 丸山陽央, 野村泰伸, 前田義信

電子情報通信学会技術研究報告   115 ( 422(CAS2015 61-79) )   79 - 83   2016.1

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Study on the scapegoat phenomenon using an artificial school class simulation

115 ( 315 )   103 - 108   2015.11

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品質工学的手法を用いたマルチエージェント避難シミュレーションモデルのパラメータ設計

大場汐莉, 伊藤尚, 的場隆一, 橋本優花, 五味伸之, 谷賢太朗, 前田義信

生活生命支援医療福祉工学系学会連合大会講演論文集(CD-ROM)   2015   ROMBUNNO.2C1-01 - 56   2015.9

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Influence of mutual concession of evacuees at the occurrence of a disaster : Simulation and theoretical approach

45 ( 4 )   299 - 304   2015.6

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Influence of mutual concession of evacuees at the occurrence of a disaster : Simulation and theoretical approach

115 ( 100 )   95 - 100   2015.6

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Influence of mutual concession of evacuees at the occurrence of a disaster : Simulation and theoretical approach

115 ( 99 )   95 - 100   2015.6

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Influence of mutual concession of evacuees at the occurrence of a disaster : Simulation and theoretical approach

115 ( 98 )   95 - 100   2015.6

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Study on the optimal number of buttons of touch panel button interfaces : Transition of the optimal number of buttons by increasing the input letters

KITA Takuro, ITO Nao, TANI Kentaro, MAEDA Yoshinobu

IEICE technical report. Welfare Information technology   114 ( 447 )   11 - 15   2015.2

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In previous study, we examined to let the participants input alphabet of four characters and recorded performance time, tap interval and the number of taps, and we suggested that the optimal number of buttons (that performance time is minimum) is 10. In addition, the optimal number of buttons which was given from performance time accorded with that one which was estimated multiple regression from tap interval and the number of taps. The purpose of this study is to investigate the influence of increasing the necessary number of letters to input on the optimal number of buttons. As a result, it is suggested that the optimal number of buttons increases with increasing the input letters.

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Development of the Interface on Operating Unmanned Aerial Vehicle by Face Recognition using Kinect

ONODERA Shun, TANI Kentaro, MAEDA Yoshinobu, NAKANO Keisuke, YAMAZAKI Tatsuya

IEICE technical report. Circuits and systems   114 ( 425 )   7 - 10   2015.1

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In recent years, remote control operation robots have been studied, and, as such, must be expected that an Unmanned Aerial Vehicle (UAV) should be used in various situations. We proposed an interface system to operate the UAV using movement of the human body. This study aims to construct the interface system that is capable of reducing the physical workload or increasing the work efficiency. In this technical report, we implemented the system sending the command to the UAV. The system generated the command when it obtained the data on human movement from Kinect. Especially, we focused on two operations to the UAV, by the right hand, and by the face recognition using Kinect. The latter case has not yet be implemented in the system, and it will be one of the future works.

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Development of Web-based "kikimimi" game system

HASHIMOTO Shiryu, TANI Kentaro, KAWACHI Ryosuke, NIIKAWA Takuya, MAEDA Yoshinobu

IEICE technical report. Circuits and systems   114 ( 425 )   1 - 6   2015.1

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Visually impaired persons can use an equipment and service based on a concept of the barrier free in various living situations in modern society, because the ADL (Activities of Daily Living) ability of the visually impaired is enhanced by assistive technologies. However, the support of cultural activities, or QOL (Quality Of Life), for the visually impaired, such as entertainments and games, are under utilized. Visually impaired persons may have a lot of mental stress by depending on the sighted persons in the daily living. To solve this problem, not only ADL but QOL is important issue on the assistive technology development. We have developed the game to enhance the QOL of the visually impaired from the viewpoint of entertainment.

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Reproduction of the frequency-dependent behavior in artificial school class model

YAMAZAKI Yuta, YAMAMOTO Kouki, TATSUTA Atsuya, TANI Kentaro, KATO Kosuke, MAEDA Yoshinobu

IEICE technical report. Circuits and systems   114 ( 425 )   11 - 16   2015.1

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The bullying problem (peer aggression or victimization) evolves from a situation in which anonymous bullies attack a particular victim with its negative attributes. There has been tried to solve the bullying problem from educational, medical, sociological and many other viewpoints. We also have investigated a mechanism of the bullying, using an artificial school-class model (ASC model) based on multi-agent simulation. In this technical report, we attempted to reproduce the concept of "frequency-dependent behavior" in the ASC model. The frequency-dependent behavior means that the agent which was often received the particular behavior from others in the past step becomes easy to receive the same behavior in the present step. If the behavior received repeatedly is negative, or non-friendly, then the agent will be easily a victim defined in the ASC model.

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Behavior of a monetary exchange model with the mere-exposure effect

INOMATA Ryota, ITO Nao, TANI Kentaro, MAEDA Yoshinobu

IEICE technical report. Circuits and systems   114 ( 425 )   21 - 26   2015.1

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To investigate the mechanism which the monetary exchange emerges from the barter exchange provides the insight about not only the history of a money economy but the appearance of local and electronic moneys. Field investigation at the local community is so difficult that we have investigated it virtually by using a method on the multi-agent simulation. So far, we have reproduced the simultaneous circulation phenomenon by a couple of moneys on the social-network-introduced Yasutomi model. However, the consumption behavior was hardly observed in it. In this technical report, we studied the simultaneous circulation phenomenon by a couple of moneys with having the consumption behavior, by means of introducing the mere-exposure effect to Yasutomi model.

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Reproduction of Four-Leg Animal Gaits Using a Coupled System of Simple Hardware CPG Models

KOJIMA Hayate, MAEDA Yoshinobu, NOMURA Taishin

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   98 ( 2 )   508 - 509   2015

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We proposed a hard-wired CPG hardware network to reproduce the gaits of four-legged animals. It should reproduce walking and bounding, and they should be switchable with each other by changing the value of only one voltage.

DOI： 10.1587/transfun.E98.A.508

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Consideration and numerical simulation for the school caste issue

TATSUTA Atsuya, TANI Kentaro, KATO Kosuke, MAEDA Yoshinobu

IEICE technical report. Welfare Information technology   114 ( 357 )   91 - 96   2014.12

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In the past decade, a rank system of student's groups qualitatively distinguished from others has been observed in Japanese school classes. It is called "school-caste", which is one of the cause of the school bullying as social problems. The school-caste can be observed inwardly from the students, but the outward observers such as teachers and parents can hardly find the school-caste in the students. In this technical report, we reproduced the school-caste-like phenomena on the artificial school class model using the multi-agent system, and investigated the effect of the teacher to prevent the school-caste from developing the school bullying. As a result, we suggested that the "prevention" should be useful for giving a stressless manner to the psychological personal relation of students, even under the school-caste.

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A software development for the storytelling assist system on picture books by the visually impaired

MATSUBA Hiroshi, SATO Masahiko, TANI Kentaro, MAEDA Yoshinobu

IEICE technical report. Welfare Information technology   114 ( 357 )   11 - 16   2014.12

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A picture book is one of the most important communication methods of parents with their children. Reading picture books to children is valuable to them in developing their emotional maturity. However, it is difficult for the parents with visual impairement, unlike the sighted, to read picture books to their children. Such support systems are under spread. In this technical report, we developed an assistive technology regardless of using OS to be possible that the parents with visual impairement read a picture book to their children, furthermore, made a function to add new picture books on our application. In the experiment, eight sighted participants operated the developed system and the usability was evaluated.

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Switching four-legged animal gaits between walk, trot and bound using CPG circuit

KOJIMA Hayate, MARUYAMA Akihiro, ICHIMURA Tomoyasu, MAEDA Yoshinobu

IEICE technical report. Circuits and systems   114 ( 312 )   1 - 6   2014.11

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In the mammalian spinal cord, a central pattern generator (CPG) is supposed to be as neural networks. The CPG is responsible for producing locomotor rhythms periodically, and the rhythms are propagated down to flexor and extensor legs. So far, we have constructed a hardware CPG model from the mathematical description proposed by Rybak et al., and, using it, reproduced oscillation behaviors corresponding to some quadrupedal gaits of four-legged animals. However, when reproducing their gaits, we need to change the structure of the network among the hardware CPG models. In this technical report, we reproduced the oscillation behaviors corresponding to the typical gaits, "walking", "trotting", and "bounding" with the hardware CPG model proposed, and switched them using the only one parameter, voltage V_<MLR>. As a result, we constructed two hardware networks that can switch between the walking and trotting, and between the trotting and bounding.

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Switching four-legged animal gaits between walk, trot and bound using CPG circuit

KOJIMA Hayate, MARUYAMA Akihiro, ICHIMURA Tomoyasu, MAEDA Yoshinobu

Mathematical Systems Science and its Applications : IEICE technical report   114 ( 313 )   1 - 6   2014.11

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In the mammalian spinal cord, a central pattern generator (CPG) is supposed to be as neural networks. The CPG is responsible for producing locomotor rhythms periodically, and the rhythms are propagated down to flexor and extensor legs. So far, we have constructed a hardware CPG model from the mathematical description proposed by Rybak et al., and, using it, reproduced oscillation behaviors corresponding to some quadrupedal gaits of four-legged animals. However, when reproducing their gaits, we need to change the structure of the network among the hardware CPG models. In this technical report, we reproduced the oscillation behaviors corresponding to the typical gaits, "walking", "trotting", and "bounding" with the hardware CPG model proposed, and switched them using the only one parameter, voltage V_<MLR>. As a result, we constructed two hardware networks that can switch between the walking and trotting, and between the trotting and bounding.

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Investigation on human action selection for passing by each other in a narrow alley

YOKOKAWA Kyohei, TANI Kentaro, KONISHI Takashi, MAEDA Yoshinobu

IEICE technical report. Circuits and systems   114 ( 312 )   7 - 10   2014.11

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It is difficult for evacuees to behave the smooth evacuation, especially in the case that they are panicked in occurring some disaster. Such a man-made disaster will increase the damage. Therefore, the evacuees have to give good influence to the global evacuation behavior by means that they evacuate calmly without preceding personal benefit. A lot of computer simulations, especially the multi-agent simulation, or MAS, have tried to clarify the valuable knowledge for the smooth evacuation. We also have made the MAS model on the evacuation behavior, and especially, have investigated the influence of the mutual concession of the agents on the global evacuation time. In this technical report, we investigated the effect of the mutual concession at the time of the collision through the virtual evacuation game. The game programmed in this study made the player select "go ahead of the agent," or "stop and concede to the agent" when the player serially and virtually collided with ten agents.

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Investigation on human action selection for passing by each other in a narrow alley

YOKOKAWA Kyohei, TANI Kentaro, KONISHI Takashi, MAEDA Yoshinobu

Mathematical Systems Science and its Applications : IEICE technical report   114 ( 313 )   7 - 10   2014.11

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It is difficult for evacuees to behave the smooth evacuation, especially in the case that they are panicked in occurring some disaster. Such a man-made disaster will increase the damage. Therefore, the evacuees have to give good influence to the global evacuation behavior by means that they evacuate calmly without preceding personal benefit. A lot of computer simulations, especially the multi-agent simulation, or MAS, have tried to clarify the valuable knowledge for the smooth evacuation. We also have made the MAS model on the evacuation behavior, and especially, have investigated the influence of the mutual concession of the agents on the global evacuation time. In this technical report, we investigated the effect of the mutual concession at the time of the collision through the virtual evacuation game. The game programmed in this study made the player select "go ahead of the agent," or "stop and concede to the agent" when the player serially and virtually collided with ten agents.

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Investigation on human action selection for passing by each other in a narrow alley

2014 ( 2 )   1 - 4   2014.11

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動的シュブルール錯視を再現するアナログ回路型神経ネットワークの設計

斎藤元喜, 前田義信, 秋田純一, 塚田 章

生体医工学シンポジウム2014   2014.9

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After the symposium "What kind of textbooks of circuits are more popular?"

Kaneko Yoshihiro, Maeda Yoshinobu

Mathematical Systems Science and its Applications : IEICE technical report   114 ( 125 )   159 - 161   2014.7

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Quantitative Analysis on Usability of Button-Input Interfaces using tablet device

ITO Nao, TANI Kentaro, MAEDA Yoshinobu

IEICE technical report. Speech   114 ( 91 )   5 - 9   2014.6

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In this study, in order to evaluate the usability of touch panel button interfaces, we examined to let the participants input alphabet of four characters and recorded performance time, tap interval and the number of taps. The optimal number of buttons which is given from performance time accorded with that one which is estimated multiple regression from tap interval and the number of taps. Based on this, we can estimate the optimal number of buttons from tap interval and the number of taps. The optimal number of buttons increases to ten from eight in comparison with precedent study which used mouse button interfaces. This is because tap interval become smaller significantly than the precedent study. Therefore, it is suggested that cognitive workload on touch panel interfaces should be smaller than mouse one.

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Quantitative Analysis on Usability of Button-Input Interfaces using tablet device

44 ( 5 )   249 - 253   2014.6

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Quantitative Analysis on Usability of Button-Input Interfaces using tablet device

ITO Nao, TANI Kentaro, MAEDA Yoshinobu

IEICE technical report. Welfare Information technology   114 ( 92 )   5 - 9   2014.6

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In this study, in order to evaluate the usability of touch panel button interfaces, we examined to let the participants input alphabet of four characters and recorded performance time, tap interval and the number of taps. The optimal number of buttons which is given from performance time accorded with that one which is estimated multiple regression from tap interval and the number of taps. Based on this, we can estimate the optimal number of buttons from tap interval and the number of taps. The optimal number of buttons increases to ten from eight in comparison with precedent study which used mouse button interfaces. This is because tap interval become smaller significantly than the precedent study. Therefore, it is suggested that cognitive workload on touch panel interfaces should be smaller than mouse one.

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回路モデルを用いた四肢歩行パターンに関する研究

前田義信, 丸山陽央, 小島颯, 市村智康, 野村泰伸

電子情報通信学会大会講演論文集(CD-ROM)   2014   ROMBUNNO.AS-1-3 - 5"-"S-6"   2014.3

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AI-1-1 What kind of textbooks of circuits are more popular?

Kaneko Yoshihiro, Maeda Yoshinobu

Proceedings of the IEICE General Conference   2014   "SS - 47"-"SS-48"   2014.3

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Efficiency of DTN Routing using monetary exchange

ASAMA Masahito, MIYAKITA Kazuyuki, MAEDA Yoshinobu, NAKANO Keisuke

IEICE technical report. Circuits and systems   113 ( 427 )   35 - 40   2014.2

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Delay Tolerant Networks (DTNs) are networks that enable us to exchange information by tolerating a long delay time. DTNs can be applied to various purposes such as disaster communication, regional information dissemination and so on. In this report, we propose a method for spreading of information periodically generated by source nodes in a DTN. As a related work, a model of barter exchange generating the currency, which is called Yasutomi&#039;s model, is proposed. In this report, we try to apply this model to the above method for the information spreading. We propose an information-exchange method that utilizes the view vector, which is introduced in Yasutomi&#039;s model, and show that the proposed method can efficiently spread information in the network.

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Mobile Rotation-Shogi Game using Speech Interface

JIN Li, TANI Kentaro, MAEDA Yoshinobu

IEICE technical report. Circuits and systems   113 ( 427 )   25 - 28   2014.2

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A wide range of assistive technologies to support the visually impaired persons have been developed to enhance the activities of daily living (ADL). However, enhancing not only the ADL but also the quality of life (QOL), such as an entertainment game, is needed to relieve some of their stress. Such games should be developed from the following two viewpoints; One is that the visually impaired persons are on equality with the sighted persons at the game whether they win or not. The other is that the game must be played without visual information by the players, and, as such, must be played using only auditory information as one of the alternative perceptions of the visual cue. In this report, we developed Japanese backgammon type game played by four player, so-called, Japanese rotation shogi, using the speech-output interface for the visually impaired, was evaluated by the Csikszentmihalyi's flow.

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Monetary Exchange Agent Simulation Using Intermediators

INOMATA Ryota, ITO Nao, TANI Kentaro, MAEDA Yoshinobu

IEICE technical report. Circuits and systems   113 ( 427 )   29 - 33   2014.2

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To investigate the mechanism which the monetary exchange emerges from the barter exchange provides the insight about not only the history of a money economy but the appearance of local and electronic moneys. Field investigation at the local community is so difficult that, we have investigated it using a method of the multi-agent simulation. So far, we have studied the influence of social network structure on the emergence and circulation of money, only for one community. In this technical report, we studied the money circulation between two communities by means of using intermediators. As a result, we verified that the intermediators played an important role in the increase of the sum of agent's consumption.

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Reproduction of Four-leg Animal Gaits Using an Asymmetric Hardware Central Pattern Generator Model

ISHIGOKA Genichiro, MARUYAMA Akihiro, KOJIMA Hayate, ICHIMURA Tomoyasu, MAEDA Yoshinobu

IEICE technical report. Circuits and systems   113 ( 427 )   41 - 44   2014.2

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In this technical report, we proposed a hardware model of the central pattern generator, or CPG, which controlled the gait such as "walk" and "run" presented by four-leg animals. Four-leg animals show four "run" phenomena, known as trot, pace, canter, and bound (or gallop), except for "walk" that is a gait slower than "run." We presented a hard-wired CPG network switchable between "run" and "walk" using only one parameter.

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Study on change of the gaits using the electronic circuit CPG network

MARUYAMA AKIHIRO, KOJIMA HAYATE, ICHIMURA TOMOYASU, NOMURA TAISHIN, MAEDA YOSHINOBU

日本生体医工学会大会プログラム・論文集(CD-ROM)   53rd   ROMBUNNO.O3-01-7   2014.1

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DOI： 10.11239/jsmbe.52.O-269

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Study on change of the gaits using of the electronic circuit CPG network

Maruyama Akihiro, Kojima Hayate, Ichimura Tomoyasu, Nomura Taishin, Maeda Yoshinobu

Transactions of Japanese Society for Medical and Biological Engineering   52 ( 0 )   O - 269-O-270   2014

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Exquisite controller of nervous system, so-called, a central pattern generator (CPG), exists in rhythm phenomena of organism. Mathematical network models were proposed to account for the phenomena, however, the physiological details has not been clear. The basic form of this model is a combination of reciprocal inhibition of nervous systems that control extensor and flexor, respectively, and, as such, must be observed mutual bursting discharge. Rybak et al. proposed a Hodgkin-Huxley type mathematical CPG model composed of two levels.We constructed, in this study, reproduced quadruped walking patterns (gaits) by means of coupling four hardware CPG models, based on Rybak's mathematical model. So far, such the networked CPG model was simultaneously controlled by plural parameters to generate abundant gaits, or network structure itself was changed every gait. In this study, we proposed a hard-wired CPG network that has been possible to generate two gaits, by changing just one parameter.

DOI： 10.11239/jsmbe.52.O-269

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Niigata Report

MURAMATSU Shogo, MAEDA Yoshinobu, NAKANO Keisuke

Fundamentals Review   7 ( 3 )   290 - 291   2014

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Gaze point measurement in a button-input interface

ISHIHARA Hiroya, TANI Kentaro, TOMIOKA Kenta, IIJIMA Atsuhiko, MAEDA Yoshinobu

IEICE technical report. Welfare Information technology   113 ( 347 )   11 - 16   2013.12

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On the button-input interfaces used in information devices, such as controllers, automatic teller machines (ATM) and ticket machines, we have conducted the experiment using virtual button interface to evaluate the physical workload, or usability. In our experiment, it was formulated a U-shaped curve against increasing the number of buttons, and, as such, must have a unique optimal number of buttons in the sense of reducing the physical workload. Furthermore, we globally analyzed that it was evaluated by two sorts of sub-workload, search and operational workloads on the button input. In this report, we investigated statistical distributions obtained by local behaviors on the button input. To this end, we measured gaze points during the button-input operation. We showed that the motion of gaze points was able to be modeled by the Levy flight.

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On-line systematization of a speech-output entertainment game "kikimimi"

ISHIZAKA Eitaro, TANI Kentaro, MAEDA Yoshinobu, NIIKAWA Takuya

IEICE technical report. Welfare Information technology   113 ( 347 )   17 - 20   2013.12

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One method to enhance not only ADL (Activities of Daily Living) but also QOL (Quality Of Life) is to enhance the empowerment of the visually impaired. The visually impaired often become the relatively powerless because they are usually dependent on the sighted (or "guide helper") in going out of home to inexperienced places. In order to enhance the empowerment of the visually impaired, it is necessary that the visually impaired have opportunities to increase their self-efficacy by means of not depending on the sighted for their activities. We have presented speech-output entertainment games to make a fight possible from an equal footing with the sighted, and, as such, must hope that the visually impaired increase their self-efficacy through the game play. In this technical report, we redesigned the table game "kikimimi," on the internet to have an opportunity that the visually impaired or the sighted living geographically far from the others can play the game "kikimimi".

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Modeling of player's behavior using artificial school class game

TATSUTA Atsuya, TANI Kentaro, KATO Kosuke, MAEDA Yoshinobu

Mathematical Systems Science and its Applications : IEICE technical report   113 ( 279 )   73 - 78   2013.11

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For the last several decades, the bullying problem (peer aggression or victimization) has transformed, from a situation in which a particular bully attacks a particular victim with negative attributes into one in which a bully may become a victim depending on circumstances. There has been tried to solve the bullying problem from educational, medical, and so on. We have investigated a mechanism generating the bullying, using an artificial school class model (ACM) based on multi-agent simulation (MAS). Every agent is programmed so as to make friends with those who have similar interests, hobbies and tastes. The player can think of the school bullying to manipulate the pseudo-experience game. In this technical report, first, a gaming simulation of the ACM, or a serious game, was used to investigate friendship formation, by means of changing one agent to a human player who is the participant in the ACM to virtually interact with other agents. Next, we programmed agent's behavior using the data obtained from human behaviors through the game playing to imitate human behaviors.

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Modeling of player's behavior using artificial school class game

TATSUTA Atsuya, TANI Kentaro, KATO Kosuke, MAEDA Yoshinobu

IEICE technical report. Circuits and systems   113 ( 278 )   73 - 78   2013.11

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For the last several decades, the bullying problem (peer aggression or victimization) has transformed, from a situation in which a particular bully attacks a particular victim with negative attributes into one in which a bully may become a victim depending on circumstances. There has been tried to solve the bullying problem from educational, medical, and so on. We have investigated a mechanism generating the bullying, using an artificial school class model (ACM) based on multi-agent simulation (MAS). Every agent is programmed so as to make friends with those who have similar interests, hobbies and tastes. The player can think of the school bullying to manipulate the pseudo-experience game. In this technical report, first, a gaming simulation of the ACM, or a serious game, was used to investigate friendship formation, by means of changing one agent to a human player who is the participant in the ACM to virtually interact with other agents. Next, we programmed agent's behavior using the data obtained from human behaviors through the game playing to imitate human behaviors.

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Evacuation Behavior Simulation considering positions of exits using Cellular Automaton

YOKOKAWA Kyohei, TANI Kentaro, OGIHARA Sanae, KONISHI Takashi, MAEDA Yoshinobu

Mathematical Systems Science and its Applications : IEICE technical report   113 ( 279 )   87 - 90   2013.11

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It is difficult for all evacuees to behave the smooth evacuation, when they are panicked in occurring some disaster. Such a man-made disaster will increase the damage. Evacuees have to give good influence to the global evacuation behavior by means that they evacuate calmly without preceding personal benefit. A lot of computer simulations, especially the multi-agent simulation, or MAS, have tried to clarify the valuable knowledge for the smooth evacuation. We also have made the MAS model on the evacuation behavior, and especially, investigated the influence of the mutual concession of the agents on the global evacuation time. In this technical report, we introduced a phenomenon, "homing instinct," which is observed in the evacuation behavior into the evacuation model proposed, the case of two-exit model, and investigated the evacuation time which all agents were completely evacuated. As a result, we confirmed that the evacuation behavior with having mutual concession makes the evacuation time be shorter than all agents independently move to their exits.

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Modeling of player's behavior using artificial school class game

Atsuya Tatsuta, Kentaro Tani, Kosuke Kato, Yoshinobu Maeda

IPSJ SIG Notes   2013 ( 13 )   1 - 6   2013.10

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For the last several decades, the bullying problem (peer aggression or victimization) has transformed, from a situation in which a particular bully attacks a particular victim with negative attributes into one in which a bully may become a victim depending on circumstances. There has been tried to solve the bullying problem from educational, medical, and so on. We have investigated a mechanism generating the bullying, using an artificial school class model (ACM) based on multi-agent simulation (MAS). Every agent is programmed so as to make friends with those who have similar interests, hobbies and tastes. The player can think of the school bullying to manipulate the pseudo-experience game. In this technical report, first, a gaming simulation of the ACM, or a serious game, was used to investigate friendship formation, by means of changing one agent to a human player who is the participant in the ACM to virtually interact with other agents. Next, we programmed agent's behavior using the data obtained from human behaviors through the game playing to imitate human behaviors.

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Evacuation Behavior Simulation considering positions of exits using Cellular Automaton

Kyohei Yokokawa, Kentaro Tani, Sanae Ogihara, Takashi Konishi, Yoshinobu Maeda

IPSJ SIG Notes   2013 ( 15 )   1 - 4   2013.10

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Four-leg Gait Simulation Research Using CPG Network

小島颯, 市村智康, 塚田章, 野村泰伸, 前田義信

電子情報通信学会技術研究報告   113 ( 223(NC2013 22-45) )   17 - 22   2013.9

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Basic Experimental Study on SMA Actuators Driven by a Hardware CPG

ICHIMURA Tomoyasu, EJIMA Naoki, IMAIZUMI Syunya, MAEDA Yoshinobu

IEICE technical report. Circuits and systems   113 ( 118 )   55 - 58   2013.7

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A central pattern generator (CPG) is a half-center rhythm generator, which is constructed from neural networks of the mammalian spinal cord. The CPG generates rhythmic locomotion. Thus, it can transmit alternating rhythmic activity of extensor and flexor sites, in the absence of external rhythmic input. This mechanism contributes to generate involuntary walking patterns of the mammalian. Rybak et al. have proposed mathematical networks of the CPG composed of Hodgkin-Huxley type differential equations. Maeda et al. have constructed a hardware CPG based on Rybak's mathematical networks. Furthermore, they have controlled a legged locomotion robot by their hardware CPG. In order to make a biologically inspired robot, we are planning to employ shape memory alloy (SMA) actuators for the robot with the hardware CPG. This paper describes basic experimental study on SMA actuators driven by the hardware CPG.

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Experimental Evaluation of a Speech-Output Type Entertainment Game

MATSUBA Hiroshi, TANI Kentaro, ITO Nao, MAEDA Yoshinobu, NIIKAWA Takuya

IEICE technical report. Speech   113 ( 76 )   7 - 12   2013.6

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Amusement-environment of the disabled persons becomes important to improve their stress. So far, we have developed a game, The10-1(Zatouichi), which enables the players (not only the visually impaired but also the sighted) to reduce their stress by means of playing with simple body motions. The features of the game are that the system is composed of simple rules easy to participate in the game, and the progress of the game is based on using only speech. In this technical report, we investigated the players' degree of satisfaction during playing the game, The10-1, by using the flow proposed by Csikszentmihalyi.

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Experimental Evaluation of a Speech-Output Type Entertainment Game

MATSUBA Hiroshi, TANI Kentaro, ITO Nao, MAEDA Yoshinobu, NIIKAWA Takuya

IEICE technical report. Welfare Information technology   113 ( 77 )   7 - 12   2013.6

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Amusement-environment of the disabled persons becomes important to improve their stress. So far, we have developed a game, The10-1(Zatouichi), which enables the players (not only the visually impaired but also the sighted) to reduce their stress by means of playing with simple body motions. The features of the game are that the system is composed of simple rules easy to participate in the game, and the progress of the game is based on using only speech. In this technical report, we investigated the players' degree of satisfaction during playing the game, The10-1, by using the flow proposed by Csikszentmihalyi.

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A consideration of efficiency of DTN using monetary exchange

ASAMA Masahito, MASUTA Takashi, MIYAKITA Kazuyuki, MAEDA Yoshinobu, NAKANO Keisuke

IEICE technical report. Communication systems   112 ( 486 )   137 - 142   2013.3

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Delay Tolerant Networks (DTNs)are networks that enable us to exchange information by tolerating a long delay time. DTNs can be applied to various purposes such as disaster communication, regional information dissemination and so on. In this report, we consider to apply DTNs to regional spreading and automatic collection of electronic free papers. As a related work, a model of barter exchange generating the currency, which is called Yasutomi&#039;s model, is proposed. In this report, we try to apply this model to the above spreading and collection of electronic free papers. We propose an information-exchange method that utilizes the view vector, which is introduced in Yasutomi&#039;s model, and show that the view vector accelerate the spreading of new electronic paper and the collection of 01d electronic paper. In addition, we propose another method to make the above method more effective and evaluate this method.

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Evacuation Behavior Simulation with "Wait" State using Cellular Automaton

YOKOKAWA Kyohei, TANI Kentaro, OGIHARA Sanae, KONISHI Takashi, MAEDA Yoshinobu

IEICE technical report. Communication systems   112 ( 486 )   111 - 114   2013.3

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It is difficult for all evacuees to behave the smooth evacuation, when they are panicked in occurring some disaster. Such a man-made disaster will increase the damage. Evacuees have to give good influence to the global evacuation behavior by means that they evacuate calmly without preceding personal benefit. A lot of computer simulations, especially the multi-agent simulation, or MAS, have tried to clarify the valuable knowledge for the smooth evacuation. We also have made the MAS model on the evacuation behavior, and especially, investigated the influence of the mutual concession of the agents on the global evacuation time. As a result, the global evacuation time was minimized when the a (= the probability of the concession)was in the range between 0.3 and 0.4. If the evacuees give their way to the others by the probability 1/3 , the evacuation time as a whole will be minimized from our study.

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Reproduction of emergence of local currency by monetary exchange model with social network

ITO Nao, TANI Kentaro, MAEDA Yoshinobu

IEICE technical report. Circuits and systems   112 ( 418 )   15 - 18   2013.1

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Recently, local currency has been important in the economic and social viewpoints of local communities. Therefore the investigation of social foundation which local currency is easy to emerge and circulate is important. However the investigation is difficult in the real local community, so in this study we investigate it using multi-agent simulation. We have re-created the circulation of several different of moneys in our simulation model. However the scale and supply of one of those moneys is nearly identical to another one, that is, all those moneys are global money. In this study, in order to emergence the local money which the scale and supply is less than global money, we introduce social network to Yasutomi's model.

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Behavioral analysis of friendship formation using artificial school class game

TATSUTA Atsuya, TANI Kentaro, MAEDA Yoshinobu, KATO Kosuke

IEICE technical report. Circuits and systems   112 ( 418 )   153 - 158   2013.1

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For the last several decade, the bullying problem (peer aggression or victimization) has transformed, from a situation in which a particular bully attacks a particular victim with negative attributes into one in which a bully may become a victim depending on circumstances. There has been tried to solve the bullying problem from educational, medical and sociological viewpoints. We have investigated a mechanism generating the bullying, using an artificial school class model (ACM) based on multi-agent simulation (MAS). Every agent (or student) is programmed so as to make friends with those who have similar interests, hobbies and tastes. In this technical report, a gaming simulation of the ACM, or a serious game, was used to investigate friendship formation, by means of changing one agent to a human player who is the participant in the ACM to interact virtually with other agents. We obtained the results of 11 human players' behaviors observed through the gaming simulation to evaluate the ACM from the viewpoint of, whether or not, behaviors of the agents would be close to those of actual students.

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Development of Entertainment Game using Speech Interface

JIN Li, MURAYAMA Naoki, TANI Kentaro, MAEDA Yoshinobu

IEICE technical report. Circuits and systems   112 ( 418 )   149 - 152   2013.1

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Language：Japanese   Publisher：The Institute of Electronics, Information and Communication Engineers  

A wide range of assistive technologies to support the visually impaired persons have been developed to enhance the activities of daily living(ADL). However, enhancing not only the ADL but also the quality of life(QOL), such as an entertainment game, is needed to relieve some of their stress. Such games should be developed from the following two viewpoints; One is that the visually impaired persons are on equality with the sighted persons at the game whether they win or not. The other is that the game must be played without visual information by the players, and, as such, must be played using only auditory information as one of the alternative perceptions of the visual cue. In this report, we developed Japanese backgammon-type entertainment game played by four players, so-called, Japanese rotation shogi, using the speeh-output interface for the visually impaired.

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Behavioral Analysis of Task Performance using the Button-Input Interface

Maeda Yoshinobu, Iijima Atsuhiko

IEICE technical report. Welfare Information technology   112 ( 336 )   25 - 28   2012.12

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Language：Japanese   Publisher：The Institute of Electronics, Information and Communication Engineers  

On the button-input interfaces used in information devices, such as controllers, automatic teller machines (ATM) and ticket machines, we have conducted the experiment using virtual button interface to evaluate the physical workload, or usability. In our experiment, it was formulated a U-shaped curve against increasing the number of buttons, and, as such, must have a unique optimal number of buttons in the sense of reducing the physical workload. Furthermore, we globally analyzed that it was evaluated by two sorts of sub-workload, search and operational workloads on the button input. In this report, we investigated statistical distributions obtained by local behaviors on the button input.

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An Electronic Circuit Design that Controls Four-leg Animal Gaits

KOJIMA HAYATE, KUBOTA MASAHITO, DOMON TATSUSHI, SUZUKI YASUYUKI, NOMURA TAISHIN, MAEDA YOSHINOBU

電子情報通信学会技術研究報告   112 ( 297(MBE2012 45-59) )   5 - 10   2012.11

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This paper addresses hardware modeling of replicating several walking patterns (gaits) observed in four-leg animals. They show a lot of gaits such as walk, trot, bound, etc., depending on their travel velocity. Mathematical modeling has been useful to replicate plausible oscillatory rhythms corresponding to the biological gaits. However, you have to change simultaneously many parameters in such models to switch on some gait from another. In this report, we reproduced four typical gaits (stand, pronk, walk and bound) by designing and constructing a network model using electronic circuits. The remarkable point was that the gait was switchable by an only single parameter in the hardware model. Furthermore, we regulated the bifurcation structure of the hardware model, to adjust to the typical bifurcations observed in the mathematical models.

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An Analog Circuit Design Controlling Quadruped Locomotion Patterns

MAEDA YOSHINOBU, KUBOTA MASAHITO, SUZUKI YASUYUKI, NOMURA TAISHIN

電子情報通信学会技術研究報告   112 ( 205(NLP2012 56-75) )   7 - 12   2012.9

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求心性刺激を含むCPGの電子回路設計

久保田真仁, 前田義信, 塚田 章

生体医工学シンポジウム2012   2012.9

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AS-1-4 Reproduction of emergence and efficiency of local money using multi-agent simulation

Ito Nao, Tani Kentaro, Maeda Yoshinobu

Proceedings of the Society Conference of IEICE   2012   "S - 7"-"S-8"   2012.8

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AS-1-6 Consideration of a social dilemma solution by MAS using Q-learning

Tani Kentaro, Ito Nao, Maeda Yoshinobu, Miyakita Kazuyuki, Nakano Keisuke

Proceedings of the Society Conference of IEICE   2012   "S - 11"-"S-12"   2012.8

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AS-1-8 AN ANALOG ELECTRONIC CIRCUIT NEURONAL NETWORK CONTROLING QUADRUPEDAL WALKING

Domon Tatsushi, Kubota Masahito, Maeda Yoshinobu, Ichimura Tomoyasu, Tsukada Akira

Proceedings of the Society Conference of IEICE   2012   "S - 15"-"S-16"   2012.8

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Influence of the inset-outset alignment change of prosthetic foot to a subjective estimation of the loading position in its sole

SUDA Hironori, HAYASHI Toyohiko, MAEDA Yoshinobu, WATANABE Tetsuya, MAEDA Yu, AGARIE Yukio

IEICE technical report. ME and bio cybernetics   112 ( 123 )   15 - 20   2012.7

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This paper describes a new subjective assessment for the alignment of tibial prosthesis. In the alignment adjustment of the prosthesis, patient's subjective assessment of the loading position in sole is usually used in clinic. Then, we developed an assessment sheet in which patient depicts the loading position in sole during standing statically. The purpose of this study is to clarify the relationship between such assessment and the inset-outset alignment change of prosthetic foot. Experiments employing three patients with trans-tibial amputation revealed that the estimated position of the loading in an appropriate alignment was located nearly on the line segment connecting toe and heel, while the medio-lateral deviation of the alignment shifted the position laterally and medially. Biomechianical parameters showing nearly the same change of the value were merely the mediolateral component of the floor reaction force, which was determined primarily by the geometrical change of the alignment.

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An Evacuation Behavior Simulation Introduced by Mutual Concessions of Agents

OGIHARA Sanae, TANI Kentaro, MAEDA Yoshinobu

Technical report of IEICE. VLD   112 ( 114 )   77 - 80   2012.6

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It is difficult to behave the smooth evacuation, when the mobs, or the crowds, are panicked in occurring some disaster. The scale of victims does not depend on that of the disaster. Therefore, the people have to behave calmly with each other without being panicked. Because it is difficult to investigate experimentally such the evacuation behavior from a safety aspect and a psychological view point, engineering strategy in terms of computer simulation may be available for clarifying solutions of the evacuation. In this technical report, we considered the evacuation behaviors using multi-agent simulation, especially in the case that the agents behave with mutual concessions. The influence of the mutual concession s among agents on the evacuation of all agents was evaluated.

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An Evacuation Behavior Simulation Introduced by Mutual Concessions of Agents

OGIHARA Sanae, TANI Kentaro, MAEDA Yoshinobu

IEICE technical report. Circuits and systems   112 ( 113 )   77 - 80   2012.6

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It is difficult to behave the smooth evacuation, when the mobs, or the crowds, are panicked in occurring some disaster. The scale of victims does not depend on that of the disaster. Therefore, the people have to behave calmly with each other without being panicked. Because it is difficult to investigate experimentally such the evacuation behavior from a safety aspect and a psychological view point, engineering strategy in terms of computer simulation may be available for clarifying solutions of the evacuation. In this technical report, we considered the evacuation behaviors using multi-agent simulation, especially in the case that the agents behave with mutual concessions. The influence of the mutual concession s among agents on the evacuation of all agents was evaluated.

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An Evacuation Behavior Simulation Introduced by Mutual Concessions of Agents

OGIHARA Sanae, TANI Kentaro, MAEDA Yoshinobu

Mathematical Systems Science and its Applications : IEICE technical report   112 ( 116 )   77 - 80   2012.6

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It is difficult to behave the smooth evacuation, when the mobs, or the crowds, are panicked in occurring some disaster. The scale of victims does not depend on that of the disaster. Therefore, the people have to behave calmly with each other without being panicked. Because it is difficult to investigate experimentally such the evacuation behavior from a safety aspect and a psychological view point, engineering strategy in terms of computer simulation may be available for clarifying solutions of the evacuation. In this technical report, we considered the evacuation behaviors using multi-agent simulation, especially in the case that the agents behave with mutual concessions. The influence of the mutual concession s among agents on the evacuation of all agents was evaluated.

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An arthroscopic image-based 2D/3D registration for computer-assisted arthroscopic surgery

NAKAMURA Ryosuke, HAYASHI Toyohiko, OMORI Go, WATANABE Satoshi, MAEDA Yoshinobu, WATANABE Tetsuya

IEICE technical report. ME and bio cybernetics   112 ( 63 )   23 - 28   2012.5

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We developed a computer-assisted system for arthroscopic surgery, which is navigated by means of overlaying a 3D bone model reconstructed from CT images upon the arthroscopic image on a real-time basis. Such overlaying requires the positional relationship between the target bone in the actual space and the bone model in the virtual space. In order to obtain this relationship, we have employed a 2D/3D registration method, where two different fluoroscopic images taken in the directions perpendicular with each other were used. However, it is not necessary to use fluoroscopy in arthroscopic surgery. In order to apply this system to surgery, the development of a new registration method was required. Then, we developed an arthroscopic image-based registration method, where at least three different arthroscopic images of the articular surfaces and corresponding 3D cartilage-model reconstructed from MRI images are used. Experiments carried out under a surgical environment using a bone model revealed that the accuracy of the overlaying would be less than 1 [mm] and less than 3 [deg] on average in translation and rotation, respectively. In the next step, rotational accuracy should be improved to meet a clinical target, less than or equal to 1 [deg] on average.

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An evaluation method for the stretching of the chest observed in baseball pitching

IDA Motoki, HAYASHI Toyohiko, MAEDA Yoshinobu, WATANABE Tetsuya, TANAKA Hiroshi, NINOMIYA Hiroki, KOMAI Masahiko, NOBUHARA Katsuya

IEICE technical report. ME and bio cybernetics   112 ( 63 )   35 - 40   2012.5

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In baseball pitching, the pitcher's trunk is known to have an important role for conveying the movement energy from the lower limb to the upper limb. In coaching for the trunk motion achieving such role, a term "the stretching of the chest" is used frequently. Its kinematic features, however, has yet to be clarified quantitatively. To clarify "the stretching of the chest" in a scientific sense, we have developed a novel parameter S, which was defined from the positions of several skin markers mounted on the chest and the back. Our preliminary study revealed that the value of S depends primarily on the horizontal abduction of the upper extremity, which is a motion for stretching the chest. Then, in this paper, we applied it to the analysis of baseball pitching in an attempt to evaluate its efficiency in baseball coaching. Empirical results employing three skillful players and three beginners suggested that parameter S has a possibility of analyzing "the stretching of the chest" quantitatively in terms of both time-varying features and kinetic chain to the trunk and the upper extremity.

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AS-1-4 Multi-Agent System on Interactions between Students and its Application to Artificial School Class Game

Maeda Yoshinobu

Proceedings of the IEICE General Conference   2012   "S - 7"-"S-8"   2012.3

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Reproduction of emergence of local money using multi-agent simulation

ITO Nao, MAEDA Yoshinobu, HAYASHI Toyohiko

IEICE technical report. Signal processing   111 ( 486 )   195 - 200   2012.3

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In this study, we propose a multi-agent simulation model which reproduces the phenomenon which multi currency emerge and circulate through a community. The proposed model is a model which is added two rules, reciprocal help activity and economic depression, to Yasutomi's model. As a result, we showed that new money emerges in the situation which the traditional money has already circulated through the community, and it circulates simultaneously with the traditional money. Furthermore, it was showed that the new money should emerge depending on both factors, i.e., the reciprocal help activity and economic depression. This will provide insight about the emergence and circulation of the local money.

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Analysis of ingestive motor function during tablet swallowing using swallowing function evaluation system SFN/3A

KAKUSHIMA Keiko, HAYASHI Toyohiko, MAEDA Yoshinobu, WATANABE Tetsuya, MICHIMI Noboru, TANIGUCHI Hiroshige, INOUE Makoto

18 ( 2 )   200 - 201   2012.2

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Detectability characteristics of voluntary movement and elimination characteristics of involuntary movement in a geomagnetic sensor-based control-interface switch, GSN/1

HIRAMATSU Yuta, HAYASHI Toyohiko, MAEDA Yoshinobu, WATANABE Tetsuya, IIJIMA Atsuhiko, WAKABAYASHI Yuko, ODA Takashi, TONDOKORO Naoki, YAMAGUCHI Toshimitsu

IEICE technical report. Welfare Information technology   111 ( 424 )   79 - 84   2012.1

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People with serious motor disabilities can operate electronic devices like personal computers with the help of a &quot;control-interface switch&quot; operable even by slight voluntary body-movements. Such switches, however, have a defect of being affected significantly by involuntary body movements, resulting in erroneous operations of the devices. Then, we have been attempting to develop a geomagnetic sensor-based control-interface switch, GSN/1, which is able to eliminate involuntary movements. In this paper, we evaluated two characteristics of GSN/1 as follows: 1) detection ability of voluntary movement and 2) elimination ability of involuntary movement. Experiments employing healthy volunteers demonstrated that GSN/1 could be sensitive to thumb movements with a tip motion distance of more than 6 [mm] and insensitive to involuntary body movements like twitch.

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Designing of artificial class game using behavior chain and reflex

IKEDA Yasuko, SATO Terutaka, ITO Nao, MAEDA Yoshinobu, KATO Kosuke

IEICE technical report. Circuits and systems   111 ( 377 )   43 - 48   2012.1

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In recent times, the problem of bullying(peer aggression or victimization) has evolved from a situation in which a particular bully attacks a particular victim with negative attributes into one in which a victim may become a bully depending on circumstances. There has been tried to solve the bullying problem from educational, medical and sociological viewpoints. We have investigated a mechanism of the bullying, using an artificial class model (ACM) based on multi-agent simulation. Every agent (or student) is programmed so as to make friends with those who have similar interests, hobbies and tastes. In this report, a gaming simulation, or a serious game, was integrated to the ACM by means of changing one agent to a player who is the participant in the ACM to interact with other agents.

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A questionnaire analysis on entertainment game using speech-output interface

ASAI Ai, MURAYAMA Naoki, TANI Kentaro, MAEDA Yoshinobu, NIIKAWA Takuya

111 ( 377 )   37 - 42   2012.1

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Face extraction for assisting handicapped person's walk and estimation of its direction

KOYAMA Takuya, MIYAKAWA Michio, MAEDA Yoshinobu

Technical report of IEICE. PRMU   111 ( 379 )   13 - 16   2012.1

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Recently, the number of the handicapped person increases with aging. In society, barrier-free is also progressing and came to often pass a handicapped person in town. When people do not notice the existence of the handicapped person, clash with each other and may lead to other accidents for it on this occasion. So, in this research, the quantitative evaluation of whether the circumference is how much careful, perform extraction of the face which may cross by image processing, and presumption of the direction of a face, photo the circumference from the handicapped person side.

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8B16 Development and Application of Voice Output Game System.

NIIKAWA Takuya, Maeda Yoshinobu

2012 ( 24 )   "8B16 - 1"-"8B16-2"   2012.1

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透視X線画像と2D/3Dレジストレーションを用いた上腕の肩甲骨面内運動の計測 (第32回バイオメカニズム学術講演会 SOBIM2011 予稿集)

長澤 憲謙, 林 豊彦, 前田 義信

バイオメカニズム学術講演会予稿集   32   1 - 4   2011.11

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Influence of the number of couplings of cardiac cell models on the beating rhythm

KIRYU Yuichiro, MAEDA Yoshinobu, IIJIMA Atsuchiko, HAYASHI Toyohiko

Mathematical Systems Science and its Applications : IEICE technical report   111 ( 294 )   113 - 118   2011.11

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Cardiac cells generate the action potential, which has relatively long absolute refractory period, so-called, the plateau phase, and, as such, show an acceleration phenomenon, or an increase of the frequency, driven by the low energy consumption when the cells are coupling. In this study, we investigated such a "high-efficiency acceleration phenomenon" on the 40-cell coupling of Noble equation, which is one of the Hodgkin-Huxley type neuron models, using the software insilicoIDE. We were simulated about influences of the number of couplings of cardiac cell models (from 2 to 12 models) As a result, the "high-efficiency acceleration phenomenon" was observed after coupling. Furthermore, it was suggested that there was the optimal number of couplings which gives the influence to the "high-efficiency acceleration phenomenon," and the optical number was nearly equal to that observed in the actual cardiac tissue.

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A27 Extraction of characteristic parameters of upper body motion in backhand drive of table tennis

KAGOSHIMA Syunsuke, HAYASHI Toyohiko, MAEDA Yoshinobu, WATANABE Tetsuya, USHIYAMA Yukihiko

Symposium on sports and human dynamics   2011   151 - 156   2011.10

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Backhand drive in table tennis is getting more important in recent years because the rally is becoming speedy. Its coaching method, however, has yet to be established due to the lack of basis motion data. In order to obtain kinematic features in backhand drive for evidence-based coaching, we compared four different backhand-drive motions with an emphasis on speed or control and with top or back spins of the ball. Experiments using five experienced table-tennis players and an optical motion capture system revealed that the angular velocity of the elbow supination and extension should be increased in case of speed emphasis, and the elbow joint valgus would be necessary in case of backspin ball, demonstrating the importance of the elbow joint motion in backhand drive.

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Design and manufacture of an electronic circuit model of the CPG with the afferent stimulation

KUBOTA Masahito, DOMON Tatsushi, MAEDA Yoshinobu, IIJIMA Atsuhiko, ICHIMURA Tomoyasu, HAYASHI Toyohiko

IEICE technical report. Nonlinear problems   111 ( 243 )   119 - 124   2011.10

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Biological rhythms are generated by a central pattern generator, or CPG, that are controlled by the spinal neural networks. Rybak et al. proposed mathematical networks of the CPG composed of Hodgkin-Huxley type differential equations, to regenerate their experimental results on the locomotion of the decerebrate cat. Furthermore, they improved the CPG model by afferent feedback terms from extensor and flexor sites. In order to analyze such rhythms and apply to the control engineering, we have constructed hardware neuron and synapse models, and, as such, regenerate the dynamics of the experimental results of the CPG and their mathematical simulation. In this report, we regenerated several dynamics using the hardware CPG with the afferent feedbacks. We thought that it would be easy to control the locomotion robots and real-time simulation by using our hardware models.

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Hardware Bursting Neuron Model Analyzed by a Viewpoint of Singularly Perturbed Dynamical System

MAEDA Yoshinobu

IEICE technical report. Nonlinear problems   111 ( 243 )   125 - 128   2011.10

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Neurons show an electrical excitation called the action potential, which are the main actor of information in neural networks. Some neurons show repetitive firings which form the bursting discharge composed of active and silent phases. Mathematical models replicating the neuronal bursting excitation need three variables at least, from a viewpoint of the dynamical system theory. Maeda and Makino (2000) proposed three-capacitance type hardware bursting model, which was equivalent to three-variable dynamical system models. In this report, the method known as dissection (Rinzel and Lee, 1987) is applied to the hardware bursting neuron model proposed by Maeda and Makino, to analyze the mechanism of the bursting generation. To this end, the circuit simulator SPICE is used. As a result, it was suggested that the hardware bursting neuron model should behave like a so-called square-wave bursting.

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A Preliminary Study on Quantitative Assessment of the Stretching of the Chest in Pitching

FUKUSHIMA Yuichi, HAYASHI Toyohiko, MAEDA Yoshinobu, WATANABE Tetsuya, TANAKA Hiroshi, NINOMIYA Hiroki, KOMAI Masahiko, NOBUHARA Katsuya

IEICE technical report   111 ( 217 )   27 - 32   2011.9

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In baseball pitching, pitcher's trunk has several functions for conveying the movement energy from the lower limb to the upper limb. The stretching of the chest is known to be one of such functions, which is usually used for baseball coaching. Its biomechanical meaning, however, is still unclear, consequently being used in a broad sense. In order to use the term clearly and effectively in the coaching, we have to establish a quantitative evaluation of the stretching of the chest. Then, this paper proposed a novel evaluation parameter using the curvature of the thoracic spine. Anatomical and motion experiments using an open-MR system and an optical motion-capture system respectively suggested that the proposed parameter could be dependent primarily to the stretching of the chest in the baseball pitching, while being independent from other components of the motion.

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錯視現象を説明するアナログ回路型神経ネットワークの設計

土門立志, 久保田真仁, 前田義信, 塚田 章, 林 豊彦, 飯島淳彦

生体医工学シンポジウム2011   2011.9

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A-1-8 A Modeling of the Job Hunting of New Graduates in Japanese Labor Market

Horiguchi Kohei, Ito Nao, Maeda Yoshinobu

Proceedings of the Society Conference of IEICE   2011   8 - 8   2011.8

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Efficacy evaluation of parameter optimization for a Cartesian scanning method alternative to mouse-pointer manipulation

TSUNODA Takuya, HAYASHI Toyohiko, MAEDA Yoshinobu, WATANABE Tetsuya, YAMAGUCHI Toshimitsu, TONDOKORO Naoki

IEICE technical report   111 ( 174 )   65 - 70   2011.7

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Personal computers have become indispensable for persons with severe motor disabilities in order to ensure communication and social participation. When such patients carry out a mouse-pointer manipulation, they usually use an operation support software together with a single switch. As typical software for such support, the Cartesian scanning method is widely used. This method necessitates us to determine the values of several parameters in a preparatory stage. This determination, however, has been done on a trial-and-error basis up to now. Then, our previous study proposed a parameter optimization method using measured response time of individual user. Subsequently, we attempted to validate the efficacy of the parameter optimization through experiments using three volunteers with motor disabilities in this study. Consequently, the optimum values were verified to be effective for decreasing the operation time without increasing the number of operation.

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A musculoskeletal model-based estimation of shoulder muscle forces for elevating the upper arm in case of rotator cuff tears

KINOSHITA Naoki, HAYASHI Toyohiko, MAEDA Yoshinobu, WATANABE Tetsuya, TANAKA Hiroshi, NINOMIYA Hiroki, KOMAI Masahiko, NOBUHARA Katsuya

2011 ( 102 )   19 - 24   2011.6

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An artificial class model and a feature on the "flat" communication

MAEDA Yoshinobu, ITO Nao, TANI Kentaro, SATO Terutaka, KATO Kosuke

IEICE technical report   111 ( 58 )   63 - 68   2011.5

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Recently, a bullying problem has transformed from fixed situation which a particular bully attacks to a particular victim with having negative attributes into mobilized one which a victim can become a bully depending on circumstances. It is difficult for every student to foresee when it can be the victim. Therefore, the students have changed the interaction and communication style with others to "flat," in the sense that they are not best friends each other but avoid becoming conflicting. They have to be always approved from peer classmates, to establish their positions in the class. In order to clarify the recent bullying phenomena arising on such "flat" communication, we proposed an artificial class model composed of agents that interact with others using formal sense of values. As a result, we observed several bullying features among the agents. Especially, conflict-avoiding feature proper to the "flat" communication is observed in spite of not programming it in the artificial class model. Furthermore, a bullying feature yielded by power-law distribution that makes teachers be difficult to find bullying phenomena is also observed.

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The study on the spatial simulation about the basic property of the social dilemma

TANI Kentaro, MAEDA Yoshinobu, HAYASHI Toyohiko

IEICE technical report   111 ( 58 )   59 - 62   2011.5

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In this study, we simulated the social dilemma game of agents allocated to the lattice on the computer. The social dilemma is one of social phenomena so that the whole society becomes an unfavorable situation, whereas every agent pursues personal profit. Agents are requested whether or not they cooperates to the neighbor. If the agent cooperates, then the agent is cost. However, the agent can gain much profit if many neighbors cooperate with him. Every agent evolves a strategy to enhance own gain through the interaction with others. In this report, we chiefly investigate a possibility of coexistence of cooperation and non-cooperation among agents, spatial chaos, and dynamic fractal.

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Training of laryngeal elevation for elderly people using a visual biofeedback of larynx movement

SATO Masahiro, KAKUSHIMA Keiko, HAYASHI Toyohiko, WATANABE Tetsuya, MAEDA Yoshinobu, MICHIMI Noboru, TANIGUCHI Hiroshige, INOUE Makoto

17 ( 2 )   150 - 151   2011.2

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Artificial class game composed of agents using preferential attachment

TOMIOKA Shizuka, SATO Terutaka, MAEDA Yoshinobu, ITO Nao, TANI Kentaro, KATO Kosuke

IEICE technical report   110 ( 384 )   37 - 42   2011.1

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In order to solve the bullying problem, we have proposed an artificial class model based on the machine agents. In the artificial class, every agent performs the interaction with others, such as the conformity, the inclusion, the exclusion and the distinction, to make friends with having the coincidence on the sense of values. In this report, we introduced a preferential attachment to generate a lot of groups. Furthermore, using the Bayesian update, the action of the agents was improved to make it mimic the human action, to be possible that a human player participates in the artificial class as the gaming simulation.

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B1 Extracting the foot position parameter that influence the maximum pronation

ONO Satoshi, HAYASHI Toyohiko, MAEDA Yoshinobu, IIJIMA Atsuhiko, KIRYU Toru

The Proceedings of the Symposium on sports and human dynamics   2011 ( 0 )   261 - 265   2011

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Excessive pronation in running is known to be one of the dominant causes of running injuries. In order to prevent it, the trilateral relationship of pronation, foot anatomy, and shoe structure has been studied in detail up to now. In addition, we assumed that the foot position at the heel contact (HC) and running speed could also affect pronation significantly. Then, we studied the relationship among foot motion, shoe sole stiffness and running speed using a multi-regression analysis. We conducted several experiments using 11 experienced runners, an optical motion capture system, a treadmill with two different speed and two types of running shoes with different inner-sole stiffness. Consequently, in low-stability shoe, pronation could be estimated primarily by foot position at HC and this relationship between them depended upon running speed. In high-stability shoe, on the other hand, the same relationship could not hold, probably due to other primary personal factors.

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Efficacy evaluation of parameter optimization for a Cartesian scanning method alternative to mouse-pointer manipulation

13   65 - 70   2011

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Measurement of the position and orientation of the humerus using a combination of fluoroscopic image and 2D-3D registration

NAGASAWA Noriaki, HAYASHI Toyohiko, TANAKA Hiroshi, KOMAI Masahiko, NINOMIYA Hiroki, MAEDA Yoshinobu, WATANABE Tetsuya, NOBUHARA Katsuya

IEICE technical report   110 ( 294 )   75 - 80   2010.11

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Video Fluoroscopy (VF) is widely used in clinic for recording in-vivo shoulder joint motions in two dimensions. In order to achieve VF-based 3-D measurement, a method using a combination of fluoroscopic image and a 3-D model of the bone has been developed by using a 2D/3D registration technique. Since its measurement accuracy depends on the bone shape and other measurement conditions, the measurement accuracy of the humeral position and orientation also has to be validated before measurement. To achieve this, we developed an empirical system using a humeral bone model, a bone-fixation equipment with high reproducibility and an X-ray projection calibration frame. Using this system, we validated the accuracy in the three different humeral orientations within the scapula plane with an elevation angle of 30[deg], 60[deg] and 90[deg]. The accuracy in the orientation was verified to be less than 1 [deg] on average in adduction/abduction and horizontal adduction/abduction, and to be less than 4[deg] on average in internal and external rotation. The accuracy in the position was verified to be less than 1[mm], 2[mm] and 5[mm] on average in the supero-inferior, medio-lateral and antero-posterior positions, respectively.

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Development of Entertainment Game (Rotation Shogi) using Speech-Output Interface

MURAYAMA Naoki, TANI Kentaro, ITO Nao, MAEDA Yoshinobu

IEICE technical report   110 ( 221 )   121 - 125   2010.10

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A wide range of assistive technologies to support the visually impaired persons have been developed to enhance the activities of daily living (ADL). However, enhancing not only the ADL but also the quality of life (QOL), such as an entertainment game, is needed to relieve some of their stress. Such games should be developed from the following two viewpoints; One is that the visually impaired persons are on an equality with the sighted persons at the game whether they win or not. The other is that the game must be played without visual information by the players, and, as such, must be played using only auditory information as one of the alternative perceptions of the visual cue. In this report, we developed Japanese backgammon type game played by four players, so-called, Japanese rotation shogi, using the speech-output interface. In the experiment, four players, composed of two sighted and two visually impaired, were evaluated by the Csikszentmihalyi's flow.

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Development of Entertainment Game (Rotation Shogi) using Speech-Output Interface

MURAYAMA Naoki, TANI Kentaro, ITO Nao, MAEDA Yoshinobu

IEICE technical report   110 ( 219 )   121 - 125   2010.10

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Language：Japanese   Publisher：The Institute of Electronics, Information and Communication Engineers  

A wide range of assistive technologies to support the visually impaired persons have been developed to enhance the activities of daily living (ADL). However, enhancing not only the ADL but also the quality of life (QOL), such as an entertainment game, is needed to relieve some of their stress. Such games should be developed from the following two viewpoints; One is that the visually impaired persons are on an equality with the sighted persons at the game whether they win or not. The other is that the game must be played without visual information by the players, and, as such, must be played using only auditory information as one of the alternative perceptions of the visual cue. In this report, we developed Japanese backgammon type game played by four players, so-called, Japanese rotation shogi, using the speech-output interface. In the experiment, four players, composed of two sighted and two visually impaired, were evaluated by the Csikszentmihalyi's flow.

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Development of Entertainment Game (Rotation Shogi) using Speech-Output Interface

MURAYAMA Naoki, TANI Kentaro, ITO Nao, MAEDA Yoshinobu

IEICE technical report   110 ( 220 )   121 - 125   2010.10

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Language：Japanese   Publisher：The Institute of Electronics, Information and Communication Engineers  

A wide range of assistive technologies to support the visually impaired persons have been developed to enhance the activities of daily living (ADL). However, enhancing not only the ADL but also the quality of life (QOL), such as an entertainment game, is needed to relieve some of their stress. Such games should be developed from the following two viewpoints; One is that the visually impaired persons are on an equality with the sighted persons at the game whether they win or not. The other is that the game must be played without visual information by the players, and, as such, must be played using only auditory information as one of the alternative perceptions of the visual cue. In this report, we developed Japanese backgammon type game played by four players, so-called, Japanese rotation shogi, using the speech-output interface. In the experiment, four players, composed of two sighted and two visually impaired, were evaluated by the Csikszentmihalyi's flow.

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二段型CPG電子回路モデルのPF層を除く簡約化について

金子怜史, 久保田真仁, 前田義信, 林 豊彦, 加納慎一郎, 塚田 章

生体医工学シンポジウム2010   2010.9

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Improvement of thyroid hormone control system in tail resorption program of Xenopus laevis

Sasaki Akiyoshi, Izutsu Yumi, Maeda Yoshinobu, Hayashi Toyohiko

IEICE technical report   110 ( 52 )   7 - 11   2010.5

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Tail resorption takes place during metamorphosis in Xenopus laevis. Tail resorption has been thought to be controlled by a programmed cell death. However, we think tail resorption is controlled by a immune system. We proposed, then, a model of Thyroid hormone control system to analyze the tail resorption program. This model was not included Thyroid hormone receptor (TR), that is thought to be key factor of amphibian metamorphosis. In this report, we add TR to the model.

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An Experimental Study on Legibility of Braille Characters for Beginners

MURAKAMI Shiori, WATANABE Tetsuya, MAEDA Yoshinobu, YAMAGUCHI Toshimitsu

IEICE technical report   110 ( 53 )   9 - 14   2010.5

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At the first stage of braille learning, it is preferable to use braille characters which are easy for beginners to read tactually. This is the motive for exploring such braille characters through an experiment. The experimental results showed that braille characters with less than three dots, space in the second row, or a simple arrangement of dots were read with short reading times. At the same time, it was found that beginners tend to misunderstand the angle of the dotted lines and miss the space in the second row. Based on these results, we discussed the relationship between the arrangement of the dots and the reading time and the application of the experimental results to braille educational textbooks.

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Activities of Niigata IT Support Center for Persons with Disabilities : Current Status and Future Tasks of IT Support System in Niigata City

YAMAGUCHI Toshimitsu, MARUYAMA Satoko, HAYASHI Toyohiko, WATANABE Tetsuya, MAEDA Yoshinobu

IEICE technical report   110 ( 53 )   79 - 82   2010.5

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IT support centers for persons with disabilities in local areas have a small number of staff members and volunteers as well as clients. This situation makes it difficult to supply high quality services continuously. Additionally, large support areas make it difficult for the supporters to travel over to the users, vice versa, in terms of cost and time. This paper describes the current status of one of local support centers, Niigata IT Support Center for Persons with Disabilities, to share and discuss the tasks with other local support centers.

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Simulation on the small-world network of Noble equation

KOMATSU Kouki, KIRYU Yuichiro, MAEDA Yoshinobu, HAYASHI Toyohiko

IEICE technical report   110 ( 52 )   31 - 34   2010.5

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A cardiac cell keeps the potential plateau in the absolute refractory period, and, as a result, peculiar behaviors are observed in the coupling system of the cells. Meunier showed the so-called acceleration phenomenon whereby the oscillation accelerated after coupling of the Hodgkin-Huxley type models. Maeda et al. showed that energy consumption can be reduced when the acceleration phenomenon is observed, from the study using hardware models. In this report we investigated that, when the coupling system formed as the ring lattice network was replaced with the small-world network, two reductions of the period and the energy consumption simultaneously occur on the diffusively coupling of 20 Noble equations which are Hodgkin-Huxley type models of the cardiac cell.

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A semi-automatic extraction of the contour of the articular cartilage from MR images of the knee

SATO Hiroki, HAYASHI Toyohiko, OMORI Go, WATANABE Satoshi, SASAGAWA Keisuke, MAEDA Yoshinobu, WATANABE Tetsuya

IEICE technical report   110 ( 52 )   41 - 46   2010.5

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Knee motion analysis has many clinical applications such as diagnosis of knee diseases and evaluation of postoperative knee functions. For analyzing knee motion in three-dimensions, a 3-D model based approaches were introduced recently by combining a fluoroscopic image-sequence of knee motion and a 3-D model of related knee bones. In order to expand such analysis into that including the articular cartilage, we need a 3-D model of the cartilage as well as bones. Then this paper proposed a semi-automatic extraction of cartilage contour in MR images. This extraction method has an advantage that a contour of the cartilage partly unclear in MR image can be estimated iteratively by using a function of evaluating the overall difference between present contour and that estimated from its neighboring gray distribution, from an initial contour roughly digitized manually. To evaluate its validity, we carried out several experiments using two different MR images of the knee. All empirical results suggested that our method would have a potential of easily extracting an accurate contour of the cartilage with high reproducibility.

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A quantitative evaluation of pitcher's pectoral tension during baseball pitching

ITO Ryo, HAYASHI Toyohiko, MAEDA Yoshinobu, WATANABE Tetsuya, NAKAMURA Yasuo, TANAKA Hiroshi, NINOMIYA Hiroki, KOMAI Masahiko, NOBUHARA Katuya

IEICE technical report   110 ( 52 )   19 - 24   2010.5

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In baseball pitching, pitcher's pectoral tension is believed to be effective to accelerate the upper extremity. Then a term "pectoral tension" is frequently used subjectively in baseball training scenes. But its definition is still unclear, limiting its use in quantitative evaluation of pitching motion. In order to eliminate such limitation, we proposed an independent parameter capable of evaluating pitcher's pectoral tension quantitatively. The parameter is defined as the area of a triangle formed by three marker points attached over the acromion, the manubrium of sternum and the processus xiphoideus. In order to evaluate its validity, we first introduced three necessary conditioned that the parameter should satisfy as follows 1) the non-throwing shoulder is in the horizontal flexion; 2) the hips rotate clockwise quickly relative to the chest when the area is maximized on the non-throwing side; 3) the maximum area is not correlated to the horizontal flexion/extension of the shoulder on the throwing side. Experiments using 15 adult and 15 young volunteers demonstrated that the proposed parameters satisfied all the conditions, suggesting its validity in pitching training.

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Automatic adjustment of bite force according to food texture in chewing-like jaw movement of autonomous jaw-movement simulator JSN/3A

KAWATA Mitsuhiro, HAYASHI Toyohiko, NAKAJIMA Shinichi, INOUE Makoto, MAEDA Yoshinobu, WATANABE Tetsuya

16 ( 2 )   132 - 133   2010.2

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Reduction of the reciprocal inhibition based hardware neuronal network

KANEKO Satoshi, SOZUKA Takuya, MAEDA Yoshinobu, HAYASHI Toyohiko

IEICE technical report. Signal processing   109 ( 435 )   233 - 234   2010.2

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A central pattern generator (CPG) is a half-center rhythm generator, which is constructed from neural networks of the mammalian spinal cord. The CPG generates rhythmic locomotion. Thus it can transmit alternating rhythmic activity of extensor and flexor sites, in the absence of external rhythmic input. This mechanism contributes to generate involuntary walking patterns of the mammalian. In this study, we rearranged the CPG structure of locomotion pattern generation, and, as such, divided the circuit system into four categories with preserving the dynamics.

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Parameter optimization of Cartesian-cursor method in scanning mouse emulations alternative to mouse manipulation

ISHIKAWA Shingo, KOYAMA Kenji, HAYASHI Toyohiko, MAEDA Yoshinobu, WATANABE Tetsuya, NAKAMURA Yasuo, WAKABAYASHI Yuko, TONDOKORO Naoki

IEICE technical report   109 ( 358 )   35 - 40   2010.1

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Personal computers are indispensable for persons with severe motor disabilities to ensure communication and social participation. For poinier operation, they usually use a scanning mouse emulator together with a single switch. As a typical emulator, Cartesian-cursor method is widely used in most interface software assisting computer operation. Several parameters of the method, however, have been determined based on empirical knowledge or on a trial-and-error basis. In order to determine them from user's physical ability, we investigated the relations between parameter values and total operation time by means of computer simulation in this study. If user's response time is given empirically, we already proposed how to optimize the speed of cursor movement and focus stationary time in a previous study. In addition, this study demonstrated that the ratio of high speed to low speed and the travel distance of the cursor before acceleration can also be optimized.

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Performance evaluation of control-interface switch GSN/1 using a geomagnetic sensor

12   13 - 18   2010

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Knee Motion Parameters for Evaluating Muscle Fatigue during Parallel Squatting

ONUKI Takashi, KIRYU Tohru, HAYASHI Toyohiko, MAEDA Yoshinobu, WATANABE Tetsuya

IEICE technical report   109 ( 332 )   23 - 28   2009.12

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Recently musclar strength training is getting popularity in nursing facilities due to its introduced into the care program. In order to carry out such training safely and effectively, we have to customize several training parameters such as the load and the frequency. In an attempt to establish a customization method, we have been studying biometric information-based methods for evaluating muscle fatigue during training. This study analyzed how motion parameters regarding electromyography and movement of the lower extremity changes over time during repetitive squat movement. Experiments employing 10 healthy subjects demonstrated that muscle fatigue primarily affected the maximum angular velocity during flexion and electromyography in the motion phases near the maximum flexion.

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The Effects of Guidance Force of Robot-Driven Gait Orthosis "Lokomat" on Muscle Activation and Joint Kinematics of Lower Extremity during Walking

AOKI Sachiko, KIRYU Tohru, HAYASHI Toyohiko, NAKAZAWA Kimitaka, NAKAJIMA Tsuyoshi, MAEDA Yoshinobu, WATANABE Tetsuya

IEICE technical report   109 ( 332 )   17 - 22   2009.12

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In recent years, gait rehabilitation for patients with spinal cord injury has been progressed by introducing advanced robotics. As an equipment for such advanced rehabilitation, robot-driven gait orthosis "Lokomat[○!R]" (Hocoma AG) is available. In order to promote patient's voluntary muscle activity, Lokomat[○!R] has a function of adjusting the driving torque for knee and hip joints required for gait. Parameter regarding this torque adjustment is named the guidance force (GF). This study analyzed the relationship between the GF value and electromyography and motion of the lower extremity under nearly the same kinematic condition, in an attempt to clarify the effects of the GF value on patient's gait. Experiments employing 5 healthy volunteers demonstrated that the decrease of the GF value affected primarily to the local activity in electromyography of the lower extremity without modifying overall activity pattern as well as the ratio of 4 gait phases in kinematics.

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車椅子利用者を考慮した避難行動シミュレーション

山口 直人, 谷 賢太郎, 伊藤 尚, 小西 孝史, 前田 義信, 林 豊彦, 渡辺 哲也

電気学会東京支部新潟支所研究発表会予稿集 = 電気学会東京支部新潟支所研究発表会予稿集   ( 19 )   47 - 47   2009.11

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活動電位を再現する電子回路ニューロンモデル研究からの考察

前田義信, 林 豊彦, 加納慎一郎, 塚田 章

電子情報通信学会技術研究報告   109 ( 279 )   47 - 50   2009.11

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Accuracy of Pupil Detection with and without Head Restraints

KIRYU Yuichiro, IIJIMA Atsuhiko, KAWASAKI Keisuke, MIYAKAWA Naohisa, MAEDA Yoshinobu, HASEGAWA Isao

IEICE technical report   109 ( 194 )   19 - 22   2009.9

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Head movement during video oculography is considered as a major source of artifacts. However, little quantitative information is available as to how pupil detection is affected by head motions. Here we show that the accuracy of pupil detection was significantly higher with head fixation devices than without ones in humans. Moreover, a preliminary study in a macaque monkey indicated that some visual targets on a screen or reward apparatus could improve pupil detection under non head-fixated conditions. These results confirmed the importance of had fixation in video oculography.

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Quantitative Classification of Pedaling Skill of Power-Assisted Bicycles Using Discriminant Analysis based on Mahalanobis Distance

INADA Hiroaki, KIRYU Tohru, MAEDA Yoshinobu, HAYASHI Toyohiko

IEICE technical report   109 ( 194 )   1 - 6   2009.9

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In this report, we evaluated pedaling skills from muscle activation patterns of both vastus lateralis of agonist and biceps femoris of antagonist, to classify them quantitatively. To this end, four parameters to classify muscle activation were prepared by means of calculating cross-correlation coefficients between the above two muscles. In the four-parameter space, we classified the pedaling skills into four groups in terms of the discriminant analysis based on Mahalanobis distances. As a result, the classification method presented in this report corresponded about 70.6% accuracy with a qualitative classification based on the human subjectivity. Furthermore, the groups classified by this method were statistically more significant than the qualitative classification.

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Detection of intentional blinking using versatile single switch VSN/1 with a photo-reflective sensor array

YAJIMA Daisuke, HAYASHI Toyohiko, WATANABE Tetsuya, MAEDA Yoshinobu, WAKABAYASHI Yuko, WATANABE Satoshi, ABE Akira, YAMAGUCHI Toshimitsu

IEICE technical report   109 ( 152 )   11 - 16   2009.7

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Persons with severe motor disabilities usually use a single switch for operating personal computer. Patients with progressive motor disabilities have difficulty in the purchase of a switch and the training for its skillful use, due to frequent update of the switch according to the progression of disabilities. Then we have been developing a versatile single switch, VSN/1, with a photo-reflective sensor array, which is applicable to the detection of both blinking and finger motion. Its data processing schemes for the two motions, however, were slightly different with each other, limiting its versatility in application. To eliminate this limitation, this study proposed a versatile detecting method applicable to both blinking and finger motion. This method was verified to be effective for detecting blinking accurately through experiments using five healthy volunteers.

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Evaluation of dynamics of multi-agent producer economic model

ITOU Nao, MAEDA Yoshinobu, HAYASHI Toyohiko, WATANABE Tetsuya

IEICE technical report   109 ( 152 )   17 - 22   2009.7

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In recent years, a "social divide", such as income and professed divides, has noticed as one kind of social issue. It is defined that, in the divided groups, the member belonged to one group cannot move on any other groups. Such fixation of social careers causes non-activation of economy. In this study, we suggested a dynamic economic model described by a multi-agent system, and evaluated it's dynamics in order to try to understand mechanisms how the social divide emerges in the model. We used Gini's coefficient to evaluate the social divide and the economic efficiency. As a result, it's suggested that high competitiveness economics have higher negative relation between Gini's coefficient and the economic efficiency than low competitiveness one.

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PC Class in Niigata University for the visually impaired

MAEDA Yoshinobu, HAYASHI Toyohiko, HORI Junichi, ISHIWATARI Hiroki, IWAKI Mamoru, WATANABE Tetsuya, YAMAGUCHI Toshimitsu

IEICE technical report   109 ( 152 )   27 - 32   2009.7

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Department of Biocybernetics, Faculty of Engineering, Niigata University, opened a PC class for the visually impaired who lived in Niigata Prefecture, in cooperated with Niigata Prefectural Association of the Visual Impairment, in 2003. So far, we have had twelve classes for six years. In this technical report, we reported this PC class, which is one of the contribution of Niigata University to the visually impaired.

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Influence of the change of the environmental condition on solving second-order free-rider problems using the generalized tit-for-tat strategy

TANI Kentaro, MAEDA Yoshinobu

Human Interface   11 ( 2 )   201 - 204   2009.5

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Influence of the change of the environmental condition on solving second-order free-rider problems using the generalized tit-for-tat strategy

TANI Kentaro, MAEDA Yoshinobu

IEICE technical report   109 ( 27 )   201 - 204   2009.5

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This paper presented how the change of the environmental condition affects the solution of social dilemma including the second-order dilemma. Such social dilemma can be solved by using generalized tit-for-tat (TFT) strategy, which is an extended version tit-for-tat strategy applied in n-person games. However, it was not suggested what kind of environmental condition be achieved the solution. In this paper, we formally modeled a community by using a multi-agent system, and simulated it under various environmental conditions. As a result, a cooperation tendency of the agents changed by depending on the cost necessary to the cooperation. Furthermore, the cooperation tendency did not changed depending on the size of gain, but changed depending on the penalty point.

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Influence of the change of the environmental condition on solving second-order free-rider problems using the generalized tit-for-tat strategy

TANI Kentaro, MAEDA Yoshinobu

IEICE technical report   109 ( 28 )   201 - 204   2009.5

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This paper presented how the change of the environmental condition affects the solution of social dilemma including the second-order dilemma. Such social dilemma can be solved by using generalized tit-for-tat (TFT) strategy, which is an extended version tit-for-tat strategy applied in n-person games. However, it was not suggested what kind of environmental condition be achieved the solution. In this paper, we formally modeled a community by using a multi-agent system, and simulated it under various environmental conditions. As a result, a cooperation tendency of the agents changed by depending on the cost necessary to the cooperation. Furthermore, the cooperation tendency did not changed depending on the size of gain, but changed depending on the penalty point.

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A-15-28 Modeling on Operation of Button Interface Console

Maeda Yoshinobu, Miyakawa Michio, Koyama Nozomu

Proceedings of the IEICE General Conference   2009   264 - 264   2009.3

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A basic experiment on convenient design of button interface

MAEDA Yoshinobu, MIYAKAWA Michio, KOYAMA Nozomu

IEICE technical report   108 ( 254 )   1 - 6   2008.10

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On the button interfaces used in information devices, such as controllers, automatic teller machines (ATM) and ticket machines, we programmed a virtual button-interface software to assess workload. Then, the total operation time, the number of clicks and the click intervals were experimentally measured. The 35 subjects, formed themselves in groups of 5 using 7 sorts of interface identified by the number of buttons, accomplished the task of inputting the Japanese family names which composed of 6 alphabets. As a result, the total operation time changed non-monotonously against the number of buttons, and was a minimal point when the number of buttons is set around 18 on the interface window. In order to clarify why such a unique minimum appears, we phenomenologically modeled the non-monotonous change of total operation time using liner equation, composed of two variables on the workload, i.e., the search and operation behaviors. It was suggested that anti-synergism of them for the workload generated the non-monotonousness.

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Guidance information method of a position guidance system for the visually impaired

KONISHI Takashi, MAEDA Yoshinobu, TANO Eiichi, MAKINO Hideo

IEICE technical report   108 ( 170 )   25 - 30   2008.7

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We proposed a new guidance scheme of the GPS-GIS-based speech guidance system using the adaptive fuzzy inference neural network (AFINN). Geographic Information System (GIS) calculates some attributes of user-to-landmark relations, so-called, landmark celebrity, landmark facade, landmark area, representative point of latitude and longitude (the center of gravity) of the landmark, user's latitude and longitude from GPS, and user's direction. These attributes were transformed to six basic elements, such as the celebrity, the facade relative bearing, the Euclidean distance between the landmark and user, the area size, the direction relative bearing and the user's individual data, respectively. The AFINN, that has the above six elements as the input data, calculates a level of importance (LOI) corresponding to a "cognitive distance". We considered that acceptable guidance was achieved by using the LOI. We applied the analytic hierarchy process (AHP) to the leaning data of the AFINN. Therefore, the guidance system reflected user's preference, and obtained the guidance suitable for diverse users. Numerical simulations suggested that the AFINN should be available for determining the guidance satisfying each user. Finally, the visually impaired pedestrians evaluated the guidance system from the user's viewpoints.

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A-15-11 Usability Evaluation of Various Switches Used in Multipurpose Remote Console.

Kato Toru, Miyakawa Michio, Maeda Yoshinobu

Proceedings of the IEICE General Conference   2008   262 - 262   2008.3

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A-2-34 Participation-type agent simulation game for making friends in the classroom

Maeda Yoshinobu

Proceedings of the IEICE General Conference   2008   73 - 73   2008.3

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Addition of Function to presume landmark-contained routes in Route Selection Software

KOMO Yutaro, MAEDA Yoshinobu

IEICE technical report   107 ( 433 )   53 - 58   2008.1

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The 40% visually impaired people, or Hikikomori, have low self-efficacy on travel because their guide helpers in traveling lead always them to the destination safely. Then, it is few for the Hikikomori visually impaired to have opportunity of self-determination on travel. We have developed the AHP-GIS-based travel assist system for the visually impaired of especially the 40% who are almost staying home. To promote their outgoings, they should decide, or advise equally the guide helper, when determining the travel route. The system developed tends to assist the self-determination of users. In this report, we presented that the system was added new function to presume landmark-contained routes, and, as such, outputted the better route of satisfying user's preferences at least the 12 sighted university students. We tested the validity of this method in the Bandai district of Niigata city, and the addition of new function increased significantly the AHP score.

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Influence of spatially restricted condition on the solution to social dilemma

TANI Kentaro, ITO Nao, MAEDA Yoshinobu

Human Interface   9 ( 5 )   43 - 46   2007.12

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Study on the social divide using a reinforcement learning MAS model

ITO Nao, MAEDA Yoshinobu

Human Interface   9 ( 5 )   73 - 76   2007.12

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Fluorescent Light Communication: a Study of Waveform Characteristics and Decoding Methods －Transmission Speed and Sampling Frequency－

KOBAYASHI Suguru, MAKINO Hideo, LIU Xiaohan, YOSHIDA Hiroshi, MAEDA Yoshinobu

2007 ( 118 )   15 - 22   2007.11

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Indoor pedestrian navigation systems using a location based service will become as useful as the better known 'GPS' outdoor systems. We have proposed a digital signal processing method for signals in a fluorescent light (FL) communication system. In this paper we investigate transmission speeds and sampling frequencies when using FL communication. The first step is to calculate the upper transmission speed and to propose how to reduce sampling frequency. Based on the analyses of their parameters we have used a decoding method with a transmission speed of 19.2kbps, and a sampling frequency of 1MHz, at a distance of 3.0m between a photo sensor and the FL, and we have checked the bit error rate associated with the digital signaling process. Our experiments have confirmed that the error rate of each decoded bit was less than 10^<-6>.

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Other Link： http://hdl.handle.net/10191/25821

Influence of spatially restricted condition on the solution to social dilemma

TANI Kentaro, ITO Nao, MAEDA Yoshinobu

IEICE technical report   107 ( 368 )   43 - 46   2007.11

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The purpose of this study is to investigate how spatially restricted condition affects solution of social dilemma. We often get social information, whereas we do not get the all. We are provided only local information around ourselves. In our study, we presented the multi-agent system model with spatially restricted condition as the information limited, and investigated influence on social dilemma. As a result, the spatially restricted condition made the model's society keep stable, but the whole benefit of agents reduced. It was suggested that an appropriate amount of spatially restricted condition should reproduce both benefit and stability of the model's society.

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Study on the social divide using a reinforcement learning MAS model

ITO Nao, MAEDA Yoshinobu

IEICE technical report   107 ( 368 )   73 - 76   2007.11

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In recent years, a "social divide" such as income and professim divides, has noticed as one kind of social issue. It is defined that, in the divided groups, the member belonged to one group cannot move on any other groups. Such fixation of social careers causes non-activation of ecomomy. In this study, we suggested the dynamic economic model described by a multi agent system, and tried to understand mechanisms how the social divide emerges in the model. Particularly we discussed how achieved a good balance between fairness and efficiency in the model.

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Participation-type agent-based simulation of group formation and minority exclusion

MAEDA Yoshinobu, NAGASAWA Miwako

IEICE technical report   107 ( 273 )   7 - 12   2007.10

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Bullying is one of social problems and we have to solve this problem for happiness and well-being of the individuals. It is very important for junior high school students that, to make friends, they find conunon sense of values, such as similar interests, same hobbies, and some kind of common activity or striving. However, a few students who cannot find the common sense of values are capable to be the minority, or the potential victim of the bullying. To describe such phenomena, we proposed the formalized agent-based model of both the group formation and minority exclusion to clarify the appearance of the minority. Secondly, in order to model real organizations and social phenomena as hybrid multi-agent systems consisting of both human and machine agents, we upgraded the model to a participation type, so-called, multi-agent system model with making the gaming simulation possible. Thus, an actual player could interact the machine agent, or agent, who worked by the stochastic rules of the model. We examined the availability in both university students and a junior high school student, and obtained similar results so as to be shown by the formalized agent-based model.

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Nursing record assist system in rural area using IC card and mobile phone

MAKINO Hideo, SATO Tatsuhiko, NAKAGAWA Izumi, SUGITA Osamu, MAEDA Yoshinobu

8   34 - 35   2007.7

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情報通信部門 災害地理情報分野の活動

牧野 秀夫, 木竜 徹, 前田 義信, 今井 博英, 萩原 威志

新潟大学災害復興科学センター年報   ( 1 )   131 - 135   2007

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Agent simulation on the temporary toilet using artificial asylum

Imamura Eri, Maeda Yoshinobu

Annual report   ( 1 )   181 - 187   2007

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Other Link： http://hdl.handle.net/10191/5974

Route Selection Software for the Visually Impaired using Relative Position Measurement Approach

KOUMO Yutaro, MIYAJI Takaaki, MAEDA Yoshinobu, MIYAKAWA Michio

Human Interface   8 ( 5 )   17 - 22   2006.12

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Behavior of a coupled system of circuit models reproducing action potentials

HAYAKAWA Akinori, MAEDA Yoshinobu

IEICE technical report   106 ( 413 )   7 - 10   2006.12

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A coupled system of nonlinear differential equation models that reproduce action potential form shows chaotic complex behaviors and acceleration phenomena. In this report, we investigated behaviors of electronic circuit models reproducing action potentials, proposed by Maeda et al. The electronic circuit model is effective in discussing relation between simultaneously dynamics and power consumption (or energy consumption), whereas the differential equation model contributes to the analysis of dynamics. When the coupled resistance is relatively small, a coupled system of this electronic circuit model shows acceleration phenomena with low power consumption, and, as such, shows that the synchronized period is small and the power consumption is reduced in the coupled system. Conversely, when the coupled resistance becomes large, the synchronization collapses and progressive wave is observed. We investigated the generation of the progressive wave in relation to the peristaltic motion, from the viewpoint of the power consumption.

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Group formation dynamics in the interaction of agent model

OHTAKI Makiko, MAEDA Yoshinobu

IEICE technical report   106 ( 413 )   11 - 16   2006.12

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School bullying is one of the most important problem we must solve, but we have never found clues of solution. This study examines a school bullying by MAS (Multi-Agent System) method, based on an assumption that the bullying emerges from perspective of student-student interaction [9]. In the report, we presented two improved models based on the original model [9], "Teacher-agent added model" and "Substituted conformity model". Then, by simulating these models, we proposed to understand group formation dynamics and the bullying structure.

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Route Selection Software for the Visually Impaired using Relative Position Measurement Approach

KOUMO Yutaro, MIYAJI Takaaki, MAEDA Yoshinobu, MIYAKAWA Michio

IEICE technical report   106 ( 408 )   17 - 22   2006.11

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We have developed the AHP-GIS-based travel assist system for the visually impaired of especially the 40% who are almost staying home (Hikikomori). The Hikikomori visually impaired people have low self-efficacy on travel because their guide helpers in traveling lead them to the destination safely. Then, it is few for the Hikikomori visually impaired to have opportunity of self-determination on travel. The visually impaired should decide, or advise equally the guide helper, when determining the travel route. This system developed tends to assist the self-determination of the Hikikomori visually impaired. In this report, we suggest that, in the AHP or the decision-making process of the system, a relative position measurement approach should be available in comparison with the other approaches.

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Fluorescent light communication: a study of waveform characteristics and decoding methods

KOBAYASHI Suguru, MAKINO Hideo, LIU Xiaohan, KUDO Jumpei, MAEDA Yoshinobu

2006 ( 116 )   101 - 108   2006.11

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Indoor pedestrian navigation systems using a location based service will be as useful as the better known 'GPS' outdoor systems. We have been studying a position based system using fluorescent light communication. In this paper we describe how to extract location signals from fluorescent light using digital signal processing. The first step is to calculate the optimal sampling frequency for the signal processing. This is followed by an analysis of the characteristics of the received waveform from the fluorescent light. Based on the analyses of the waveform characteristics we used a decoding method with a sampling frequency of 2MHz at the 1.5m distance between a photo sensor and the fluorescent. Our experiments confirmed the suitability of the method and the error rate of each decoded bit was less than 10^<-4> in all combinations of 8 bit length transmission signal patterns.

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Other Link： http://hdl.handle.net/10191/25830

Development of an Indoor-outdoor Information Input Program as a Pedestrian Location Guidance System

TAKAMI Ryo, MAKINO Hideo, MAEDA Yoshinobu

2006 ( 116 )   109 - 116   2006.11

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A pedestrian location guidance system will make it possible to guide a person using GPS position information, using visible light communication or RFID. To prepare guidance data for the system, we have developed an indoor-outdoor information input program. The program uses GIS data as the outdoor layer and CAD (Computer Aided Design) data as the indoor layer to delimit the data area. However, there are many kinds of CAD data formats; so we handled them as bitmaps, and used image processing to improve the accuracy of the indoor information database. Experimentally, we confirmed an improvement of the accuracy of the indoor information database.

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Other Link： http://hdl.handle.net/10191/25831

注視点情報を用いた適応型読書拡大器の試み

宮澤洋一, 宮川道夫, 前田義信, 堀潤一, 玉木徹, 岡本明, 田中正太郎, 小熊隆史, 武田紗路, 青柳真人

日本生体医工学会大会プログラム・論文集   45th   585   2006.5

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A-19-1 A preliminary study of obstacle avoidance in location guidance system for visually handicapped

Monma Yoshinari, Makino Hideo, Maeda Yoshinobu

Proceedings of the IEICE General Conference   2006   319 - 319   2006.3

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A-18-4 Basic research on intruder monitoring system using fluorescent light communication

Hosaka Masaki, Makino Hideo, Maeda Yoshinobu

Proceedings of the IEICE General Conference   2006   318 - 318   2006.3

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The Basic Studies on the CCTV Reading System Used Gazing Point

TANAKA Shotaro, OGUMA Takashi, TAKEDA Sachi, AOYAGI Masato, MIYAKAWA Michio, MAEDA Yoshinobu, TAMAKI Toru

2005 ( 25 )   7 - 12   2005.11

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Consideration to concern numbers of best buttons of interface device

TAKANO Tomoe, MIYAKAWA Michio, MAEDA Yoshinobu

2005 ( 25 )   1 - 6   2005.11

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Development of an Indoor-outdoor Speech Input Program as an Universal Location Guidance System

TAKAMI Ryo, MAKINO Hideo, MAEDA Yoshinobu

IEICE technical report. ME and bio cybernetics   105 ( 304 )   31 - 34   2005.9

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An universal location guidance system will make it possible to guide a person using (GIS/GPS) position information, coupled through a visible light communication method or RFID. To prepare guidance data for the system, we have developed an indoor-outdoor speech input program. The program uses GIS data as the outside, or external layer and CAD data as the indoor or internal layer to localize the data area. Experimentally, the first step is to create the information database. The first component of the data base is the specification of the guidance information data at each layer and then the input of the speech information data. Secondly, we confirmed that we could receive speech guidance to each position.

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Route Inference in an AHP-GIS-based travel assistive system

MIYAJI Takaaki, MAEDA Yoshinobu, MAKINO Hideo

IEICE technical report. Welfare Information technology   105 ( 186 )   15 - 20   2005.7

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To encourage a travel of the negative blind persons for going out, so-called Hikikomori, we have developed the AHP(Analytic Hierarchy Process)-GIS(Geographic Information System)-based travel assistive system for the visually impaired. In this system the users can select a travel route from several available routes reflecting their favorite. We would like to promote their self-efficacies for travel using this sort of decision-making opportunity, presented by our AHP-GIS system. In this report, the factor analysis was introduced to a road database of the AHP-GIS system to find the above available routes. Eventually we showed the validity of this method in the Bandai district of Niigata city.

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Multi-agent simulation on a school bullying emerged from the mobbed group

ANEZAKI Kazuya, MAEDA Yoshinobu, MAKINO Hideo

IEICE technical report. Welfare Information technology   105 ( 186 )   61 - 66   2005.7

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A school bullying is a serious problem in the world. In order to vanish the school bullying, it is necessary to consider it from various fields such as the school counseling, the psychological sociology and the mathematical engineering. We set the mobbed classroom model (multi-agent system) in the personal computer to consider the bullying problem from the viewpoint of the mathematical engineering. In our model, every agent (students) has the several value formulated and interacts randomly with the other agents. Although our model was simple, the agents found a unique agent out as a heterogeneous person. In this report, we report that if the agent interacts, not randomly but friendly, the bullying problem can be reduced.

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A-19-11 A position guidance system using light apparatus : Guidance method using network of fluorescent light

Yamonouchi Hiroaki, Makino Hideo, Maeda Yoshinobu, Ishii Ikuo

Proceedings of the IEICE General Conference   2005   340 - 340   2005.3

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A Study on the CCTV System with Gazing Point Tracking Ability

MAEDA YOSHINOBU, MAEDA YOSHINOBU, OGUMA TAKASHI, ISHIGURO TAKASHI, MIYAKAWA MICHIO, MIYAKAWA MICHIO, TAMAKI TOORU, HORI JUN'ICHI, HORI JUN'ICHI

ヒューマンインタフェースシンポジウム論文集   2005 ( 1 )   241-244   2005

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Studies on the Effective Use of Gazing Point Information for the CCTV Reading System

TANAKA SHOTARO, MAEDA YOSHINOBU, MAEDA YOSHINOBU, MIYAKAWA MICHIO, MIYAKAWA MICHIO, TAKEDA SACHI, AOYAGI MASATO, TAMAKI TOORU, HORI JUN'ICHI, HORI JUN'ICHI

ヒューマンインタフェースシンポジウム論文集   2005 ( 2 )   845-848   2005

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A position guidance system for the blind using lighting apparatus : An improvement of the optical characteristic

MATSUSAKA Nohiriro, MAKINO Hideo, WATANABE Reiji, YAMANOUCHI Hiroaki, MAEDA Yoshinobu, ISHII Ikuo

IEICE technical report. ME and bio cybernetics   104 ( 500 )   17 - 20   2004.12

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To develop a universal location guidance system for the blind, we are studying an indoor location positioning method. For such purposes, several new information transmission methods using a fluorescent light were proposed by Steven Leeb et. al. However, in the case of digital data transmission using frequency modulation, there are difficulties for high-speed data transmission because of brightness fluctuation in fluorescent light. In this paper, using a guidance system developed by our group, we examined the position data transmitted at the speed of 4800 bps, and observed a fluctuating receiving signal in the speed of 9600 bps. Moreover, in case information is transmitted, we describe flickering generated from a fluorescent light.

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A-19-6 Speech Guidance System for the Visually Impaired using a Mobile Phone and Lightning Fixture

Watanabe Reiji, Makino Hideo, Higaki Hiroyuki, Maeda Yoshinobu, Ishii Ikuo

Proceedings of the IEICE General Conference   2004   386 - 386   2004.3

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Coupling of Nonlinear Circuit Oscillators Reducing the Power Consumption

YAGI Eiji, MAEDA Yoshinobu, MAKINO Hideo, HIRONO Mikihiko

IEICE technical report. Circuits and systems   103 ( 569 )   41 - 46   2004.1

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Neurons and cardiac cells transmit the physiological information by propagating the action potentials. We proposed an electronic circuit oscillator model especially for the cardiac cells. The diffusively coupled system of these hardware models shows the acceleration phenomena, whose periods get shorter than the period of each isolated system. In this report, we investigated, using the hardware models, the needed power consumption to cause the acceleration phenomena. As a result, we found that the power consumption could be reduced through the coupling of the isolated systems, though the acceleration phenomena were observed.

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Simulation on New Guidance Scheme of the Guidance System for the Visually Impaired : Effect of Landmark Celebrity on Guidance

KONISHI Takashi, MAEDA Yoshinobu, SUZUKI Fumihisa, TANO Eiichi, MAKINO Hideo

12   59 - 62   2003.9

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Experiment and Evaluation of a GPS Mobile Phone and PDA in a Speech-Output Guidance System for the Visually Impaired

HIGAKI Hiroyuki, MAKINO Hideo, WATANABE Reiji, TETSUMOTO Hideo, MAEDA Yoshinobu, ISHII Ikuo

IEICE technical report. ME and bio cybernetics   103 ( 327 )   61 - 66   2003.9

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A GPS (Global Positioning System) and GIS(Geographic Information System) based speech-output guidance system has been developed as the assistive technology for the visually impaired. In this report, to develop a practical speech-output guidance system for the visually impaired, we developed novel software which enables location data to be input by a visually impaired person. We also developed the speech-output data management system. Here a user is able to input location data and able to receive speech-based guidance using a GPS mobile phone or a PDA that has a GPS receiving unit. Moreover, the speech-output data management system enables input and output of data according to a user's coordinate position on a digital map. Such maps now cover the entire area of Japan. Using a GPS mobile phone, our experimental work suggests that a user can receive speech-output guidance within 15 seconds, automatically.

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Speech Guidance System for the Visually Impaired using a GPS Cellular Phone including and Azimuth Sensor

Higaki Hiroyuki, Makino Hideo, Maeda Yoshinobu, Watanabe Reiji, Ishi Ikuo

Proceedings of the IEICE General Conference   2003   368 - 368   2003.3

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Acceleration phenomena of hardware models for Purkinje fiber cells

MAEDA Yoshinobu, SAKAGUCHI Shinya, MAKINO Hideo, DOI Shinji

Proceedings of the IEICE General Conference   2003   3 - 3   2003.3

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Recognition Method of Invisible SP-Code for CCTV used for the Visually Impaired

SASAKI Yasushi, MAKINO Hideo, MAEDA Yoshinobu, HIRONO Mikihiko, ISHII Ikuo

Proceedings of the IEICE General Conference   2003   366 - 366   2003.3

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Consideration for individual identification from face-image and hand-image using multivariate analysis

HAYASAKA Shuichi, MAEDA Yoshinobu, MAKINO Hideo, ISHII Ikuo

IEICE technical report. ME and bio cybernetics   101 ( 533 )   67 - 74   2001.12

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We addressed the basic research of individual identification using the face-image and the hand-image, which are taken from both the visible gain region(VGR)and the near infrared ray region(NIRR). First, we derived the features of the image from-second-order local auto correlation features. Second, we identified a given image using the several reference images from point of view of the multivariate analysis. We obtained the NIRR images by a CCD camera, an optical filter, and an incandescent lamp. We verified experimentally the individual identification from those Images of three persons, and, we checked that the IRR image is effective for individual identification.

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Improvement of resonant communication system in an Implantable Stimulator

TORIKOSHI Yoshio, MAKINO Hideo, SATO Eiichi, MIKAMI Nobuhiro, MAEDA Yoshinobu, ISHII Ikuo

IEICE technical report. ME and bio cybernetics   101 ( 533 )   81 - 88   2001.12

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In a cardiac pacemaker, it is difficult to obtain an electrocardiogram(ECG)using long-term real-time telemetry, when power is supplied by an internal battery. Therefore we have considered the resonant communication system, which reduces the consumption of the internal battery, using an implantable stimulator for cardiomyoplasty. Because resonant frequency changes and communication sensitivity fall, with change of communication between the inside-body equipment and the outside-body equipment. The external device which can choose the optimal carrier for communication distance was developed, preventing a fall in communication sensitivity. Resonant communication was estimated by a device distance within 65mm and a baud rate of 2400bps.

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Two-cell Network Dynamics of Bursting Hardware Neuron Models

MAEDA Yoshinobu, MAKINO Hideo

15   47 - 50   2000.10

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Application of an invisible bar code to Augmented Reality : Object position detection and speech guidance method

YAMAMOTO Satoshi, MAKINO Hideo, MAEDA Yoshinobu, HIRONO Mikihiko

IEICE technical report. ME and bio cybernetics   100 ( 330 )   59 - 66   2000.9

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An augmented reality is a technology that presents information by combining virtual objects in the real world. We have examined a method that recognizes some objects and presents their information to users. Concretely we have developed an object guidance system using a CCD camera and an invisible bar code, which one cannot recognize in normal circumstances. The object guidance system recognizes the invisible bar code. Detailed description of the object is provided through speech. We confirmed that at least three objects on the desk were exactly identified and that the detailed information about each object was described by speech. Then it took about 3.8 seconds to detect three barcodes, and about 7.8 seconds to decode each barcode. The invisibility of the barcode maintains the integrity of the object, whereas visible bar codes tend to dominate the design of objects. We expect that this system can be applied to not only augmented reality but also an assistive technology for the visually impaired.

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An Outdoor Guidance System using GPS for Visually Impaired People [II] : Guidance using FM-DGPS

TANO Eiichi, MAKINO Hideo, MAEDA Yoshinobu, KITAMURA Yasuhiro, MARUYAMA Atsushi, IKARASHI Akira

IEICE technical report. ME and bio cybernetics   100 ( 98 )   101 - 108   2000.5

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We have improved the outdoor guidance system for visually impaired people using a FM-DGPS and our prototype portable unit. First, we had our system possess the following two functions. One was a telephony type, the other was a portable type. We regard the system, which the mobile station obtains the geographical data via a telephone circuit, as the telephony type. When the mobile station has both the GPS receiver and the geographical database, we regard it as the portable type. Second, while we walked around our campus, urban and rural areas, the measurement error of the FM-DGPS was about three meters on average and ten meters at most. Finally, we compared the radiobeacon-DGPS with the FM-DGPS in view of evaluating accuracy. Also, we verified that the DGPS, using our GPS receiver and the radiobeacon was useful for our Guidance System.

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Consideration for bar code position detection using a neural network with mutual inhibitions : Application to work assistance for visually impaired

HAYASAKA Shuichi, MAEDA Yoshinobu, MAKINO Hideo, YAMAMOTO Satoshi, SEKIYA Yasushi

IEICE technical report. ME and bio cybernetics   100 ( 98 )   109 - 116   2000.5

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We have developed an assistive system for the visually impaired to recognize functional parts of objects. The necessary information for the visually impaired is encoded in a two-dimensional (2D) code that put on the object. In our study the 2D code is "invisible" in the sense that it is hidden in the background design, though it is visible in the near infrared spectrum. Therefore, we cannot recognize it through our naked eyes. We extended the faculty of our system in this report so that the system could recognize successively the several 2D codes. To this end, we used an artificial neural network in which each neuron model is connected by means of mutual inhibitions. A static image (640×480 pixels) obtained by the CCD camera was given to the neural network composed of 357 Nagumo-Sato neuron models. The neural network was set so as to overspread the image. When the network parameters were regulated at appropriate values, the corresponding neurons to the location of 2D codes could generate randomly a bursting excitation their turns. A 2D code is 1.5×1.5cm in area. The distance from CCD camera to 2D code is 40 cm. When initial values of the neuron models were identical, we confirmed that our system could detect five 2D codes during forty seconds by using numerical simulation (Pentium II prcessor, 450MHz).

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Low-Power Telemetry in an Implantable Stimulator

KITAMURA Masakazu, MAKINO Hideo, SATO Eiichi, MAEDA Yoshinobu, KURODA Hideo, HASEGAWA Yuji

IEICE technical report. ME and bio cybernetics   99 ( 687 )   79 - 84   2000.3

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In a cardiac pacemaker, it is difficult to obtain an electrocardiogram (ECG) using long-term real-time telemetry, when power is supplied by an internal battery. Therefore we have considered the resonant communication system, which reduces the consumption of the internal battery, using an implantable stimulator for cardiomyoplasty (Sato et al.1997). In this paper we report on an improved telemetry, and also the monitoring of ECG in real time. Resonant communication was estimated by a device distance within 30mm and a baud rate of 2400bps. The ECG was displayed on the external programmable device under a resolution of 8 bits and a sampling frequency of 240Hz. Current consumption was within 1mA in a trial device.

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Analysis of Dynamics shown by a Hardware Neuron Model Using the Dynamical System Theory

MAEDA Yoshinobu, SATO Shunsuke, MAKINO Hideo

14   323 - 326   1999.10

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An Outdoor Guidance System using GPS for Visually Impaired People : Increased accuracy using FM-DGPS

TANO Eiichi, MAKINO Hideo, MAEDA Yoshinobu, PARKES Donald Nicholson

IEICE technical report. ME and bio cybernetics   99 ( 82 )   35 - 40   1999.5

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A GPS provides information on location, using signals from Global Positioning System satellites. Elsewhere we have discussed an outdoor guidance system using GPS for visually impaired people. In our earlier reports the measurement error was over l00 meters, using a stand alone GPS receiver. Now measurement error can be reduced to 10 meters at most when using FM-DGPS and our prototype portable unit. Our system was composed of two stations. A visually impaired traveler with a GPS receiver formed one of the stations. A personal computer acted as the base station. The stations were linked by telephone enabling the visually impaired traveler to receive guidance information. Here we report on the use of a GPS receiver and palm-top computer by visually impaired people.

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A Method for Displaying High Definition Images in Distance Learning : The Tuition of Children in Hospital

ABE Hirotaka, MAKINO Hideo, MAEDA Yoshinobu, ISHII Ikuo

IEICE technical report. Education technology   98 ( 563 )   47 - 54   1999.1

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When students have to study using distance learning procedures, for instance children who are in hospital;it may be difficult for them to receive 'CLEAR'images on their 'BLACKBOARDS'. In this paper, we present ways to display 'CLEAR', high definition images. The procedures used to achieve this objective are discussed. Specifically, the whole 'blackboard' is not used but is divided into several smaller images using a video camera. We then use the 'entropy of images' to select a template to reconstruct the final image using pattern matching. Our experiments suggested use of a 40×40 pixel template and high entropy, as optimal in a image(640×480 pixels). We conclude the paper by describing an application using a school for children with special needs.

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Consideration on Recognition of Block-type 2-D Bar Code

NAKAMURA Hideo, MAKINO Hideo, YAMAMIYA Shiro, MAEDA Yoshinobu, HIRONO Mikihiko

Technical report of IEICE. HCS   98 ( 503 )   1 - 8   1999.1

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An"easy-to-use"block-type two-dimensional bar code, based upon error-correcting codes and code concatenation, has been developed.The configuration of the bar code could be changed by using sub-sets of the unit block.Furthermore, it was possible to decode under various conditions including change of slope, rotation, distortion, fragmentation, and also when a part of the bar code was missing.In this paper, the recognition characteristics for several slopes and rotations was experimentally evaluated.Also, we were able to show that"the redundant encoding process"had high recognition properties for the bar code, when using printed fragments of a paper sheet, the complex surfaces of an object, and even when scanning the image on a T-shirt.

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Consideration of Program Transmission Method in Implantable Stimulator

SONE Hiroyuki, MAKINO Hideo, MAEDA Yoshinobu, KITAMURA Masakazu, SATO Eiichi

IEICE technical report. ME and bio cybernetics   98 ( 309 )   21 - 27   1998.9

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The purpose of implantable stimulators is the recover of organism function, through electrical stimulation of the internal body part. Battery capacity determines the term of implantation. The battery is contained in a titanium housing and this makes battery exchange difficult. It is therefore necessary to minimize the electrical power consumption of the stimulator, even during the signal communication period between the stimulator and the program transmitting device (the programmer). In this paper we adopt the resonant communication method, in which the power consumption is suppressed in the communication from the stimulator to the programmer. We studied the communication properties in two cases. In the first case the transmission-receiving coil of the stimulator is set in the titanium housing. In the second case the coil is set in the epoxy resin portion of stimulator. As a result, resonant communication in the first case was not possible but in the second case it was possible to communicate when coil arrangements were within 20mm distance with a 10mm horizontal gap between the stimulator and the programmer.

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Twisted homoclinic orbit in reduced Hodgkin-Huxley equations

FUKAI Hidekazu, MAEDA Yoshinobu, PAKDAMAN K., NOMURA Taishin, SATO Shunsuke

IEICE technical report. Nonlinear problems   98 ( 45 )   49 - 56   1998.5

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The various responses exhibited by the four-variable Hodgkin-Huxley equations when the input current is changed can all be reproduced by two variable reduced models. However, when the parameter representing the potassium reversal potential is also modified, dynamics, such as twisted homoclinic orbits appear that are inherently of dimension higher than two. In this work, we show that, in this case, it is still possible to reduce the HH equation to a three variable system. Our analysis suggests that global bifurcations such as twisted homoclinic bifurcation and period doubling can be preserved in the reduction process.

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On reduction of neuron models

MAEDA Yoshinobu, PAKDAMAN K., NOMURA Taishin, DOI Shinji, SATO Shunsuke

生体・生理工学シンポジウム論文集   12   81 - 84   1997.9

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Response characteristics of excitable cell models to bursting inputs.

MAEDA YOSHINOBU, DOI SHINJI, NOMURA TAISHIN, SATO SHUNSUKE

生体・生理工学シンポジウム論文集   11th   73-76 - 76   1996.11

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Reduction of the bursting neuron model and analysis of the dynamics.

MAEDA YOSHINOBU, DOI SHINJI, NOMURA TAISHIN, SATO SHUNSUKE

生体・生理工学シンポジウム論文集   10th   461-464 - 464   1995.11

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Nonlinear Dynamics of the Bursting Neuron Model

MAEDA Yoshinobu, DOI Shinji, NOMURA Taishin, SATO Shunsuke

IEICE technical report. ME and bio cybernetics   95 ( 84 )   85 - 92   1995.5

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A bursting discharge is one of the most typical temporal behaviors of neurons. A bursting neuron repeats periodically or non-periodically two phases ; an active phase in which impulses are successively produced and a silent phase in which no impulse is produced at all. In this paper, nonlinear dynamics of spontaneous bursting discharges is investigated by means of a model of bursting discharges (a bursting neuron model) from a point of view of dynamical system theory.

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Reduction and phase space analysis of the Onchidium pacemaker neuron model

Maeda Yoshinobu, Doi Shinji, Nomura Taishin, Sato Shunsuke

IEICE technical report. ME and bio cybernetics   94 ( 80 )   25 - 32   1994.5

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Hayashi et al.presented a Hodgkin-Huxley type neuron model with eight variables as the model of mollusk Onchidium pacemaker neurons which showed several oscillatory phenomena such as beating and periodic or chaotic bursting discharges.In order to study the dynamical behavior of the pacemaker neuron model,we derive a three- variables reduced model from the original neuron model using the reduction method proposed by Kepler et al..Then,using the nullcline in the three-dimensional phase space,structures of the periodic orbit corresponding to beating and bursting discharge are studied.

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Two-dimensional bifurcation diagram of Hodgkin-Huxley model

Maeda Yoshinobu, Doi Shinji, Sato Shunsuke

IEICE technical report. ME and bio cybernetics   MBE93 - 22   1993

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Two-dimensional bifurcation diagram with respect to two parameters,namely,current pulse intervals and current pulse intensity normalized by threshold current,are investigated for the response sequences of Hodgkin-Huxley model driven by periodic pulse trains.Results are compared qualitatively with those of the electrophysiological experiment reported by Takahashi and others. Effects of the temperature parameter on the bifurcation diagram are also considered.

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