The Japanese Journal of Ergonomics
Online ISSN : 1884-2844
Print ISSN : 0549-4974
ISSN-L : 0549-4974
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Volume 22, Issue 1
Displaying 1-6 of 6 articles from this issue
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  • Development of an interior consultation system based on knowledge engineering
    Mitsuo NAGAMACHI, Koji ITO, Yoshiyuki FUKUBA, Toshio TSUJI, Hiroshi KA ...
    1986 Volume 22 Issue 1 Pages 1-7
    Published: February 15, 1986
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.22.1
    JOURNAL FREE ACCESS
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    Emotional Technology is defined here as “an interpretation system of user's emotion to physical design elements” and is applied to design of house building. The knowledge engineering is applied to this system, in which expert system consisted of knowledge data base and production rules are built in order to consult designers for decision of room interior designing.
    This interpretation system named HULIS (Human Living System) consists of emotional adjective word data base and emotional technology expert system. When user's demands of room interior are expressed in words, his or her image is displayed on CRT through the reasoning structure of this expert system.
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  • An objective measurement method of accommodation aftereffect induced by VDT work and its application to display color
    Tsunehiro TAKEDA, Yukio FUKUI, Takeo IIDA
    1986 Volume 22 Issue 1 Pages 9-17
    Published: February 15, 1986
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.22.9
    JOURNAL FREE ACCESS
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    An objective measurement system for visual fatigue is developed by improving the Campbell type optometer. Decrease of accommodation area (DAA), which is defined by integration value of response curve to sudden change of target from the base of the averaged value of the response curve during near stimulations are presented, is proposed to use as an objective measure of visual fatigue. The DAA is measured for three subjects on simplified five hours VDT work with one hour noon recess concerning to five color CRTs with different colors. A performance test, a subjective evaluation on CRT colors and a questionnaire investigation on visual fatigue and disorder are also carried out simultaneously and compared with the DAA. All the results essentially coincide with each other and the DAA is concluded to be most sensitive and useful. The results infers the advantage of CRTs with broad spectral energy distribution with respect to visual fatigue.
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  • Effects of character luminance on physiological strain during VDT work
    Ryoji YOSHITAKE, Koichi IWANAGA
    1986 Volume 22 Issue 1 Pages 19-26
    Published: February 15, 1986
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.22.19
    JOURNAL FREE ACCESS
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    The effects of character luminance on physiological strain were experimentally studied in a visual search task, which set subjects looking closely at a CRT display. Five healthy male subjects performed the task for two hours. Character luminances of 5cd/m2, 24cd/m2 and 50cd/m2 were evaluated. Near point accommodation, visual acuity, flicker value (CFF), electroencephalogram (EEG), blinking rate, reaction time and error rate were measured and physical symptom questionnaires were filled out.
    Near point accommodations of three luminance conditions were all significantly increased by 2-hours VDT task. Increased in near point at 5cd/m2 were tended to be largest in three conditions. At 5cd/m2, flicker value was significantly and blinking rate was kept lower than at any other luminance condition during VDT task. Reaction time and error rate at 5cd/m2 were largest in three conditions. Reaction time was significantly smaller at 24cd/m2 than at any other condition. Blinking rate and reaction time showed quadratic regression curves with luminance. Error rate was linearly correlated with luminance. The results of this study suggested that a proper luminance was at about 30cd/m2.
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  • Learning effects in a pursuit display
    Toshiyuki YAMASHITA
    1986 Volume 22 Issue 1 Pages 27-29
    Published: February 15, 1986
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.22.27
    JOURNAL FREE ACCESS
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  • Error of short term visual memory of 1-0 sequence
    Shigeru IIJIMA, Toshio HORIUCHI, Yutaka TOMITA
    1986 Volume 22 Issue 1 Pages 31-33
    Published: February 15, 1986
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.22.31
    JOURNAL FREE ACCESS
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  • Practical use of Ergonomists in manufacturing industry
    Takao OKUBO
    1986 Volume 22 Issue 1 Pages 35-38
    Published: February 15, 1986
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.22.35
    JOURNAL FREE ACCESS
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