The Japanese Journal of Ergonomics
Online ISSN : 1884-2844
Print ISSN : 0549-4974
ISSN-L : 0549-4974
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Volume 11, Issue 4
Displaying 1-6 of 6 articles from this issue
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  • Dynamical analysis of bipedal walking by computer simulation
    N. Yamazahi
    1975 Volume 11 Issue 4 Pages 105-110
    Published: August 15, 1975
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.11.105
    JOURNAL FREE ACCESS
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    The computer simulation model of bipedal walking was developed in order to analyze colletively the dynamical characteristics of human walking that is one of the most basic problem to the design of prostheses and other relative fields about walking.
    This model is formed with two dimensional seven rigid links and eight muscle groups, and that is able to calculate the floor reactions, joint moments, muscular forces, electric activities of muscles, power of leg, energy consumption, transmitted forces by joints, and center of gravity from the measured displacements and physical constants of subject. To examine this model, those calculated values were compared with experimental values, and they agreed well respectively.
    The normal walking of adult man and woman and the bipedal walking of japanese monkey and chimpanzee were simulated with this model. Consequently, it was shown that the characteristics of human walking are caused by the erect of knee joint in stance phase and propulsion by push off of foot.
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  • Precognitive control behaviors the human operator in manual control systems
    K. ITO, M. ITO
    1975 Volume 11 Issue 4 Pages 111-116
    Published: August 15, 1975
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.11.111
    JOURNAL FREE ACCESS
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    It can be considered that the human operator in continuous tracking tasks has two fundamental control behaviors of a precognitive one and a predictive one. That is, he tracks in a precognitive mode for a simple input and in a predictive mode for a complex input. Then, what kinds of input signals can the human operator track in a precognitive mode?. And by what means may he shift from precognitive to predictive mode!. This paper considers these experimentally by using a single sine wave and 2 or 3 sine waves as input signals.
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  • Handling miss of bicycle
    K. KATAHIRA, S. SAITO, S. TSUKAHARA
    1975 Volume 11 Issue 4 Pages 117-121
    Published: August 15, 1975
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.11.117
    JOURNAL FREE ACCESS
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    Running course of a bicycle rolls when the rider turns his head to the right or left. We could record this handling miss by means of electropotentiometric method. As a result, the magnitude of handling miss with turning head was larger than that of the miss with eye closed.
    The authors considered that those handling unstabilities were resulted to the muscle tone of fore-limbs produced by tonic neck reflex (TNR) which was veiled at usual state.
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  • On the future of speciallty magazin
    K. UCHIDA
    1975 Volume 11 Issue 4 Pages 122
    Published: August 15, 1975
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.11.122
    JOURNAL FREE ACCESS
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  • An experimental study of key-board operation of a CRT display system
    O. INOMATA
    1975 Volume 11 Issue 4 Pages 123-124
    Published: August 15, 1975
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.11.123
    JOURNAL FREE ACCESS
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  • A thinking of ergonomics
    H. UMEHARA
    1975 Volume 11 Issue 4 Pages 125-135
    Published: August 15, 1975
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.11.125
    JOURNAL FREE ACCESS
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