掲載論文閲覧:JETは専門家による査読のある、オープンアクセスの人間工学に関する科学雑誌です:Journal of Ergonomic Technology (JET)

Journal of Ergonomic Technology (JET)
ISSN 2432-1575

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Design and Development of a Myo-Electric Controlled Artificial Hand
論文掲載日:2013/03/01  第13巻
論文著者:
Yasunari Hashimoto, Junichi Ushiba, Yutaka Tomita, Keio University
論文概要:
Original article
Appeared on Ergonomics of Human System Interaction, Vol. 13, No. 1, 9/14, 2011.

Faculty of Science and Technology, Keio University provides an opportunity for junior-high-school students to give a chance to attend a
course of "Design and Development of a Myo-Electric Controlled Artificial Hand" as well as other scientific and technological courses. Junior-high-school students who enrolled the course study neurophysiology, electric circuits, computer programming that are the equivalent level of sophomore or junior classes in university. With adequate assistance of senior university students, junior-high-school students overcame the difficulties of the topic enthusiastically. We concluded that it has benefits for junior high school, and their students who have intellectual curiosity and interest in this field.

Keywords: Artificial hand, Myo-electric control, Junior-high-school students, Hot Soup Processor
ダウンロード回数:269 回
Estimating Membrane Potential in Human Motoneurons
using a Per-Stimulus Time Histogram
論文掲載日:2010/03/01  第10巻
論文著者:
Yasunari Hashimoto, Junichi Ushiba, Yutaka Tomita, Keio University
論文概要:
Original article
Appeared on Ergonomics of Human System Interaction, Vol. 10, No. 1, 16/22, 2007.

Although it is useful to learn how alpha motoneurons integrate motor and sensory inputs in humans to understand the motion control mechanism and to study the neuronal diseases, it was considered that the identification of after-hyperpolarization (AHP) is impossible in humans because it is unethical to record membrane potentials at the cell body in vivo. In this paper, we propose a novel method to estimate AHP based on peri-stimulus time histogram (PSTH) analysis. The response properties of PSTHs, where a stimulus is delivered at a fixed delay time after the previous discharge of a motor unit, provide the characteristics of the membrane potential at the cell body of motoneurons. We investigated the responses of 21 single motor units to electrical common peroneal nerve stimulation in the right tibialis anterior (TA) muscle of 5 healthy subjects. The stimulus was applied through a bipolar stimulating electrode placed distal to the neck of the fibula at an intensity of 83–93% of the motor threshold to only activate Ia afferents of the TA. We obtained 6 PSTHs with different delay times (5, 15, 25, 35, 45, and 55 ms) in a single recording session. To validate the estimation, we investigated the relationship between the mean interspike interval and the slope of the estimated AHP, and observed a significant inverse relationship (p < 0.02). We concluded that the relationship between the firing response and the delay of the stimulus represents the transition of the motoneuronal AHP.

Key words: After-hyperpolarization, Peri-stimulus time histogram, Tibialis anterior muscle, Motor unit
ダウンロード回数:292 回
Reassurance evaluation structure at the time of communicating information in public space – practical study of major public spaces –
論文掲載日:2012/03/01  第12巻
論文著者:
Shigeyoshi IIZUKA, Kanagawa University
Yosuke ASANO, Masahiko MUNECHIKA, Waseda University
論文概要:
Original article
Appeared on Ergonomics of Human System Interaction, Vol. 12, No. 1, 1/11, 2009.

In order to develop a structure of evaluation terms related to reassurance at the time of communicating information in a public space into knowledge that is reflected in design, both of an analysis of LAN spots of various public spaces, e.g., stations, airport, and internet cafes, rental office and establishment of each evaluation structure are required. Bu this study, it was found that reassurance at the time of communication information in an Internet café is influenced of both ‘safety’ and ‘comfort.’ And it was also found that reassurance at the time of communicating information in the LAN spot of an airport or a station and a rental office is influenced only by ‘safety’ (not by ‘comfort’). Furthermore, it was found that it is thought that ‘safety’ is secured and it is naturally, such as, ‘information leak/information are not abused,’ and ‘secured institution.’ Moreover, ‘comfort’ is considered that he/she feels reassurance if sufficient, and that it is inevitable if un-sufficient, such as ‘good feelings about how to use an equipment’ and ‘back ground music.’

Keywords: Kansei evaluation structure, Reassurance, Kansei quality, Quality deployment method, Public space
ダウンロード回数:145 回
Analysis of reassurance evaluation structure at the time of communication information in public space
論文掲載日:2011/03/01  第11巻
論文著者:
Shigeyoshi IIZUKA, NTT Cyber Solution Laboratories
Yosuke ASANO, Masahiko MUNECHIKA, Waseda University
論文概要:
Original article
Appeared on Ergonomics of Human System Interaction, Vol. 11, No. 1, 1/9, 2008.

In order to realize the public space when we can communicate information with reassurance, it is necessary to clarify how users feel reassurance from what element and to harness it in a design. In our approach, Kansei evaluation model were used to extract evaluation terms that related to reassurance at the time of communication information in a public space, and structuring of those evaluation terms are performed. As a result, ‘safe’ and ‘comfortable’ as evaluation terms on a mental reaction first. Then, the relation between these evaluation terms and comprehensive sensitivity (‘reassurance’) was found. Furthermore, as evaluation terms on the basic element which constitutes reassurance, 6 elements: ‘information leak’ and ‘image’ were extracted. The evaluation terms were also structured by using the association diagram method. Finally, the evaluation structure related to the reassurance when the user communication in a public space was established.

Keywords: Reassurance, Kansei evaluation structure, Evaluation term, Kansei quality, Public space
ダウンロード回数:137 回
Analyses of computer games by analytic hierarchy process
論文掲載日:2010/03/01  第10巻
論文著者:
Toshiyuki YAMASHITA, Ahmad EIBO, Tokyo Metropolitan University
Yutaka KURIYAMA, Toin University of Yokohama
Tomoshige HASHISHITA, Softnica Co. Ltd.
論文概要:
Original article
Appeared on Ergonomics of Human System Interaction, Vol. 10, No. 1, 16/22, 2007.

Attention to human computer interaction has grown in recent years, because we have been spending more time on interaction with computer systems in the information-oriented society. We adopted a computer game, the space invader game, as an example of human computer interaction. We constructed eight different versions of the game varying the three features, that is, the attacks by the invaders, the sound effects, and showing the score on the display. We used Saaty’s AHP (Analytic Hierarcy Process) procedure to evaluate how each feature of the game determined whether the game was preferred. The results from AHP suggest that the invaders’ attacks, the sound effects, and the score on the display have effects on the enjoyments of the sensorimotor skill, the perceptual stimulation, and the challenge of getting higher score, respectively.

Keywords: Computer games, AHP, Human computer interaction, Human interface
ダウンロード回数:119 回
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