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Volume 30, Issue 5
Displaying 1-13 of 13 articles from this issue
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Lifestyle and healthKanehisa MORIMOTO1994 Volume 30 Issue 5 Pages 267-274
Published: October 15, 1994
Released on J-STAGE: March 11, 2010
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Ken-ichi HONMA1994 Volume 30 Issue 5 Pages 275-280
Published: October 15, 1994
Released on J-STAGE: March 11, 2010
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Mitsuo SASAKI1994 Volume 30 Issue 5 Pages 281-286
Published: October 15, 1994
Released on J-STAGE: March 11, 2010
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From the view point of Brain Neuro-Immuno-Cutaneous BiologyTatsuya OZAWA1994 Volume 30 Issue 5 Pages 287-291
Published: October 15, 1994
Released on J-STAGE: March 11, 2010
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Growth and senilityMie INOKUCHI, Suguru INOKUCHI1994 Volume 30 Issue 5 Pages 293-297
Published: October 15, 1994
Released on J-STAGE: March 11, 2010
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Ippei TSUKUI1994 Volume 30 Issue 5 Pages 298
Published: October 15, 1994
Released on J-STAGE: March 11, 2010
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Toshimasa KAWANISHI, Manabu KATO, Sachio CHIN1994 Volume 30 Issue 5 Pages 299-303
Published: October 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSThis paper described the influence of the sun-glitter on sea surface to human eyes. Authors carried out the measurements about the human eye dark adaptation time and sun-glitter physical values such as color, illuminance and brightness of sun. The measurement results are as follow; (1) The sun-glitter exists nearer the center of sight, the dark adaptation time are more increased, (2) If sun-glitter exists on 30 degrees from the center of sight, the dark adaptation time becomes half, (3) When the color of sun-glitter is pale yellow, the dark adaptation time becomes 30 times longer than non sun-glitter state.View full abstractDownload PDF (4126K) -
Koki MIKAMI, Soichi IZUMI, Kazuo SAITO1994 Volume 30 Issue 5 Pages 305-314
Published: October 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSThe workload and performance of middle-aged and older workers on the 3-team, 2-shift (twelve hours a shift) systems in a polyester-pipe manufacturer were investigated compared with younger workers in order to contribute to both best-utilizing the ability of middle-aged and older workers in night work and improving the workshop.
The results are: (1) The rates of the actual activity excluding personal allowance of middle-aged and older workers were not lower than those of younger workers on either the day shift or the night shift. (2) More self-defense behavior was observed in middle-aged and older workers. (3) It was suggested that flexible work design with much thought of the work intensity would be a key to best utilizing their ability.View full abstractDownload PDF (3301K) -
Chyi-Shiun WU, Hiroyuki MIYAMOTO, Kageyu NORO1994 Volume 30 Issue 5 Pages 315-321
Published: October 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSIn the present study, 2 kinds of experiments were conducted to investigate differences in micro movement of the body between wood classroom chair and OA chair (experiment 1) and between conventional desk work and VDT task (experiment 2). In the experiment 1, VDT task was performed by 8 subjects. A chair used in the experiment 2 was the VDT chair, and 5 subjects participated in the experiment 2. A method for continuously measuring the angle of pelvic inclination was developed to record the micro movements.
In the experiment 1, the micro movement was observed more frequently under the condition of the classroom chair than under the condition of the OA chair. The results suggest that the postural changes occurred frequently during the experiments using the classroom chair. In the experiment 2, the conventional desk work accompanied many micro movements, while during VDT task the frequency of the micro movement was low. These results show that VDT work forces users to a constant constrained posture and VDT work is easy to bring muscular fatigue.View full abstractDownload PDF (799K) -
A comparison in the motion of Unshin between skillful and unskillful subjectsAkiko SUZUKI, Sachiko FURUTA1994 Volume 30 Issue 5 Pages 323-329
Published: October 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSThis study is an attempt to develop how to rationally guide learners on hand-sewing known as Unshin, a Japanese cultural skill, in the liberal and professional education by analyzing it experimentally and by making suggestions about its mechanism.
It was found out that there are many moving forms and processes in mastering Unshin. By using a computer system, the forms in making a right seam and a wrong seam while doing Unshin with eyes opened and closed on 3 skillful (S) and 3 unskillful (US) subjects were analyzed.
The resulting stick pictures (SP) in the computer show that the motion of the forearms; the locus of the movement of the right and left tips of the forefingers; the horizontal, vertical and the velocity of arm movements are some of the distinctive features that could be observed and clearly studied. The following results were observed from the SP: a) the locus of the movement of the right and left tips of forefingers of S are smoother than US; b) the SP of S show that the motion of the forearms when the subject's eyes were closed are as smooth as when their eyes were opened but the SP of US show that when the subject's eyes were closed, the motion of the forearms were irregular and crude than when their eyes were opened; and c) the vertical distance of the right finger tips of S is larger than that of US's which is explained by the controlled movement of the articulatio radiocarpea of the S.View full abstractDownload PDF (3815K) -
Hiroaki YUZE, Hideoki TADA1994 Volume 30 Issue 5 Pages 331-337
Published: October 15, 1994
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSThe purposes of the present study are to develop an efficient computer system for automatic identification of endogenous eyeblink EOG waves and to estimate the usefulness of the measures for the endogenous eyeblinkings. It is usually hard to discriminate the blink waves from the other atypical or blink-like waves. So, first of all, an algorithm that utilized the differentiation value of EOG records was proposed to identify eyeblinks automatically and a computer system on the basis of this algorithm was developed. In order to evaluate this computer system, prediction probability was examined through 10 subjects' data. Automatically detected eyeblink waves were compared with the videotaped record, which were consisted of the two combined images of the chart records of EOG and eyebrow behavior. The probabilities of congruency between two sets of data are relatively high; the mean is 91.7% ranging from 72.7% to 98.2%. The possible measures for eyeblink waves were defined and estimated by the 10 subjects' data. The correlations among these measures suggested that an amplitude was the best measure to describe the eyeblink wave features.View full abstractDownload PDF (941K) -
Kaoru SUZUKI, Masaharu TAKEDA, Yoshio HAYASHI, Daijiro SATO1994 Volume 30 Issue 5 Pages 339-343
Published: October 15, 1994
Released on J-STAGE: March 11, 2010
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Susumu SAITO1994 Volume 30 Issue 5 Pages 345-347
Published: October 15, 1994
Released on J-STAGE: March 11, 2010
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