The Japanese Journal of Ergonomics
Online ISSN : 1884-2844
Print ISSN : 0549-4974
ISSN-L : 0549-4974
Volume 58, Issue 5
Displaying 1-5 of 5 articles from this issue
Editorial
Research issues
  • Hiroki FUJITA, Kenji SANO
    2022 Volume 58 Issue 5 Pages 213-222
    Published: October 15, 2022
    Released on J-STAGE: October 20, 2022
    JOURNAL FREE ACCESS

    The present paper is intended to introduce ergonomics researchers to “iCLO”, a new management method that involves resting the eyes. It is defined as a method wherein one “actively closes one’s eyes even for a short period in a safe environment, when they would otherwise just be idly open and when there would be no detriment caused by closing one’s eyes.” A previous study revealed that the subjective symptoms of ocular fatigue, dry eye, and blurred vision improved and the interblink interval was shown to be shorter when engaged in iCLO. iCLO is particularly suitable when working remotely, because it can be done at one’s own pace and can be implemented when in a small room. In the future, for responding variety of new ways of resting the eyes in work/life settings, various possible methods using prefix “iCLO-,” such as “iCLO working” or “iCLO web surfing” might be expected. Therefore, the scope of research issues for iCLO is considered very broad. It is expected to play a significant role in preventing computer vision syndrome and improving performance by selectively and actively controlling the timing and quantity of the visual information received from the outside world.

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Practice report
  • A Case of 3DCG Videos
    Makoto SUDO, Kiyoko YOKOYAMA
    2022 Volume 58 Issue 5 Pages 223-231
    Published: October 15, 2022
    Released on J-STAGE: October 20, 2022
    JOURNAL FREE ACCESS

    We studied the effect of shot composition, continuity assurance method and shot size on continuity during transitions. As stimuli, we used videos that adopted the three factors of shot composition (close to wide, wide to close), continuity assurance method (standard, mismatch on action, mismatch on position), and view angle (32°, 47°, and 66°). By creating the video with 3DCG, we intended to improve the accuracy of the analysis by securely fixing the factors other than the fluctuation factors of the analysis target. In the experiment, participants were presented with stimuli and evaluated whether or not the connection between the two shots was seen continuously on a five-point scale. As a result of the experiment, it was clarified that continuity was ensured when the shot composition used the “wide to close”. It was also suggested that the shot composition used affects the effect of “match on action”. The “match on action” and “match on position” methods for ensuring continuity were found to have the effect of ensuring continuity. This effect was recognized regardless of the shot composition or view angle.

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Short communication
  • Saeko YAMASHITA, Issey TAKAHASHI, Masaya MIYOSHI, Yoko ICHIKAWA, Kiyok ...
    2022 Volume 58 Issue 5 Pages 232-236
    Published: October 15, 2022
    Released on J-STAGE: October 20, 2022
    JOURNAL FREE ACCESS

    The purpose of this study is to develop a wearable nurse call that uses hand movements as input. We aim to find candidate gestures that do not overlap with patients' hand movements in their daily activities in order to suppress error transmission. First, we clarified the movements that inpatients frequently perform in their daily lives from a web questionnaire. Next, we investigated how similar the input gestures of multiple assumed wearable nurse calls were when healthy elderly participants acted out these frequent daily actions. As a result, it may be possible to improve the accuracy by devising a combination of circle and triangle gestures.

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