The Japanese Journal of Ergonomics
Online ISSN : 1884-2844
Print ISSN : 0549-4974
ISSN-L : 0549-4974
Volume 6, Issue 1
Displaying 1-9 of 9 articles from this issue
  • M. Ohkawa
    1970Volume 6Issue 1 Pages 8-14
    Published: February 15, 1970
    Released on J-STAGE: July 01, 2010
    JOURNAL FREE ACCESS
    In today's technology, techniques for anthropometry in human engineering have been vastly developed. The present report, accordingly, outlines some of what is known of anthropometric technique.
    The reports will be distributioned over seven phases:
    1. measuring device
    2. the advantage of photographic instrumentation
    3. recent photographic method
    4. advanced photographic instrumentation
    5. a personalized mathematical model of human body
    6. the man-amplifier concept
    7. a system of notation for mobility evaluation
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  • K. Yonemoto
    1970Volume 6Issue 1 Pages 15-18
    Published: February 15, 1970
    Released on J-STAGE: March 11, 2010
    JOURNAL FREE ACCESS
    Car design needs matching human factor and car factor. From introducing human engineering “Car layout decides man's compartment” changes “Compartment that man needs decides Car layout”. Compartment that man needs starts anthropometry. Anthropometry for car design is that-.
    (1) Anthropometry data must express percentile without distinction of sex, age and country.
    (2) Anthropometry data must be the data that connects man to car.
    (3) Comfortable data of man must be decided from (2) plus man's feeling.
    (4) In future, comfortable data of man is piled up high and auto design for human engineering must be established.
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  • [in Japanese], [in Japanese], [in Japanese], K. Nakao, [in Japanese], ...
    1970Volume 6Issue 1 Pages 19-24
    Published: February 15, 1970
    Released on J-STAGE: March 11, 2010
    JOURNAL FREE ACCESS
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  • Study Group for Somatometry, J. E. R. S.
    1970Volume 6Issue 1 Pages 25-41
    Published: February 15, 1970
    Released on J-STAGE: March 11, 2010
    JOURNAL FREE ACCESS
    Download PDF (3394K)
  • T. Ohkubo
    1970Volume 6Issue 1 Pages 42-44
    Published: February 15, 1970
    Released on J-STAGE: March 11, 2010
    JOURNAL FREE ACCESS
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  • T. Sadoyama, K. Kogi
    1970Volume 6Issue 1 Pages 45-50
    Published: February 15, 1970
    Released on J-STAGE: March 11, 2010
    JOURNAL FREE ACCESS
    Deltoid muscle activity in holding arm was studied in order to determine the allowable above-shoulder work area for longer operation.
    The surface electromyogram of the deltoid muscle was integrated and printed out as digit counts per second. Mean maximum duration of the isometric contraction of the muscle was 322sec. for 30% and 131sec. for 50% of the individual maximum strength. The principal component analysis of the integrated values of the electromyogram for 20 samples demonstrated that the predominant component changed at 3/10 to 4/10 of the maximum duration. This coincided with the appearance of the muscle pain.
    The deltoid muscle activity was measured at different points in the saggital plane passing the acromion. It was as high as 30% of the maximum contraction at overhead regions and the contour line for 10% activity was the line between the vertex and the horizontal arm reach.
    It is concluded that the work area over the head should be avoided for operation lasting for tens of seconds, and for operations lasting a few minutes the vertex-to-horizontal reach line should not be exceeded, to prevent the shnulder fatigue.
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  • H. Terakado
    1970Volume 6Issue 1 Pages 51-56
    Published: February 15, 1970
    Released on J-STAGE: March 11, 2010
    JOURNAL FREE ACCESS
    In designing and planning of the furnitures and the room interiors it is necessary to evaluate systimcally and quantatively various postures appearing in man's living, not to mention the essentia 1 anthropometric data. In the present paper a classification of possible living postures was attempted and the height of main body parts as well as the size of space occupied in those postures were measured to obtain necessary data for desiging. The results show that the eye height of those fundamental living postures does not distribute evenly. The eye height never falls within the range between 30-65cm or 121-138cm above the floor for average Japanese male adults. The space occupied is revealed to be approximately the same for standing, chair-sitting or lying postures. being about 1.2-1.3 m2, but about the half of the value for floor-sitting.
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  • S. Aramaki, [in Japanese], [in Japanese]
    1970Volume 6Issue 1 Pages 57-63
    Published: February 15, 1970
    Released on J-STAGE: March 11, 2010
    JOURNAL FREE ACCESS
    An experimental study was conducted regarding the effect of transverse and horizontal vibration upon several motor tasks.
    The greatest increment of tracking error was observed at the frequency of 3cps and 5cps with 0.09-0.25G under transverse vibration.
    Obvious increment of reaction time and error of step control were observed at the frequency of 7cps with 5mm of double amplitude under horizontal vibration.
    It was assumed that the effects of the vibration were predomininantly related to frequency rather than acceleration under condition of 1-10cps and 5mm double amplitude below.
    Excellent performance of tracking was observed at 30-50cm (called normal working area).
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  • T. Ishimatsu
    1970Volume 6Issue 1 Pages A1-A7
    Published: February 15, 1970
    Released on J-STAGE: March 11, 2010
    JOURNAL FREE ACCESS
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