Faculty Profiles - MAEDA Yoshinobu

MISC - MAEDA Yoshinobu

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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

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

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

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

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

Language：Japanese Publisher：一般社団法人電子情報通信学会

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'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'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

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 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

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

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

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

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

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

Language：Japanese Publisher：Japanese Society for Medical and Biological Engineering

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

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

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. 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

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

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

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

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

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

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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

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

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

Language：Japanese Publisher：Information Processing Society of Japan (IPSJ)

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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

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

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

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

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

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

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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