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Volume 6 (1970)
- Issue 6 Pages 259-
- Issue 5 Pages 207-
- Issue 4 Pages 167-
- Issue 3 Pages 111-
- Issue 2 Pages 71-
- Issue 1 Pages 8-
Volume 6, Issue 2
Displaying 1-6 of 6 articles from this issue
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K. Hirakawa, [in Japanese], [in Japanese], [in Japanese], [in Japanese ...1970 Volume 6 Issue 2 Pages 71-80
Published: April 15, 1970
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSHuman cadaver scalps of the parietal region were examined on the buffer capacity and were compared with rubber, mould and foamed stylol. A head of 5kg, in the center of which an acceleration sensor was attached, was dropped from various heights upon the steel plate, on which the test pieces were put. At the moment of impact, acceleration curves were recorded. The notches of acceleration curves should correspond to the damages of each layer of the scelps.
Scalp tissues were damaged over 30cm fall, confirmed by histological examination, and torn apart by 40cm fall. In the latter case, the configuration of the acceleration curve showed the bottoming phenomenon, which means the loss of buffer capacity. Maximal accelration value showed 100g.
Viscol A-30 (Thiokol) of 7mm thickness was confirmed as having the epuivalent buffer capacity to human scalp as far as the impact acceleration does not exceed 100g.
Some discussion were made on the buffer capacity and simulation of human scalp.View full abstractDownload PDF (10245K) -
S. Horino, K. Tsubouchi, K. Sakai1970 Volume 6 Issue 2 Pages 81-90
Published: April 15, 1970
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSMan machine system in Air Traffic Control Service has essen ttially information processing function. particularly, visibility of air-port tower-cab is vital to air-traffic controller's performance.
Visibility is defined in a concept of “space characteristics” of visual information; is measured majorly by solid-angle, and consequently several key requirements to visibility design can be made clear.
Measurement of tower-cab visibility is made possible by a newly developed equi-solid-projection fish-eye lens with 230° angular field or by application of conventional type of fish-eye lens with 180° angular field with and of special attachment lens. By these instruments, solid-angle can be easily measured through measurement of photo-image area.
Tower-cab visibility variables and evaluation index, and their quantitative relationships are also discussed. (continued)View full abstractDownload PDF (4044K) -
A. Ohtani1970 Volume 6 Issue 2 Pages 91-96
Published: April 15, 1970
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSEffect of mental task on legible distance of a visual target approaching to subjetc was investigated. Detection of slightly longer tones among train of short tones was used as the mental task. Legible distance during auditory detection was about 10 per cent shorter than without auditory detection. Error of the detection increased when the visual target approached to critical legible point.View full abstractDownload PDF (772K) -
A. Chapanis1970 Volume 6 Issue 2 Pages 97-100
Published: April 15, 1970
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESS -
1970 Volume 6 Issue 2 Pages 101-104
Published: April 15, 1970
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSDownload PDF (553K) -
1970 Volume 6 Issue 2 Pages 104-106
Published: April 15, 1970
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSDownload PDF (435K)
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