Faculty Profiles - MAEDA Yoshinobu

MISC - MAEDA Yoshinobu

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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

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

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

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

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

People with serious motor disabilities can operate electronic devices like personal computers with the help of a "control-interface switch" 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

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

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

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

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

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

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

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

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

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

Language：Japanese Publisher：The Japan Society of Mechanical Engineers

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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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