巻号一覧
17 巻, 2 号
選択された号の論文の4件中1～4を表示しています
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高橋 英次1962 年 17 巻 2 号 p. 81-94
発行日: 1962/06/10
公開日: 2009/04/03
ジャーナル フリー脳卒中が何故日本に多いかという問題について,これを国際的視野から眺め検討する目的で, WHOに人口動態統計を報告している国々のうち西欧20か国を選び,脳卒中死亡率並びに動脈硬化性変性性心疾患死亡率とFAOによる食品群別の国民的平均配分量との間に相関を求めた。その結果脳卒中死亡率は概して穀類の消費量が大で油脂類・乳類・芋類等の消費量の少い国に高いような傾向がみられた。
さらに国際的にみて日本人に次いで脳卒中死亡率の高い米国黒人の多く居住する同国南部の栄養摂取状況を検討した結果,日本ことに東北地方農村にみられると同様の栄養上の欠陥のあることを認めた。すなわち無機質ことにCaとビタミン類の不足である。土壤や河川水,水道水中の無機質と脳卒中死亡率との関係を追求した研究があるが,著者は食物中に含まれる無機質ことにCaとビタミン類のもつ意義の少くないであろうことを強調した。抄録全体を表示PDF形式でダウンロード (1583K) -
倉田 正一, 重田 定義1962 年 17 巻 2 号 p. 95-102
発行日: 1962/06/10
公開日: 2009/04/03
ジャーナル フリーMan-machine system in card punching operation was analyzed specially interested in the relation of the display in machine to the receptor in man and of the control in machine to the muscle as an effector. The physical environment within which the card punching was carried out was also evaluated by the output of man-machine system.
A large number of misspunching seems to be caused by the manner of decoding numerals in information receiving and decision making processes. The physiological capacities of fingers on this operation were measured in connexion of speed, accuracy, force and working area. It is obvious that the load of each finger is not fitted to the physiological and psychological abilities presented by punchers, so far as our experimental condition is concerned. It is suggested that the fitting the machine to the man at work is quite necessary in this case on the efficiency of the system.抄録全体を表示PDF形式でダウンロード (621K) -
岡田 晃1962 年 17 巻 2 号 p. 103-106
発行日: 1962/06/10
公開日: 2009/04/03
ジャーナル フリーExperimental studies were made, with the following briefly stated results, on the discrimination of amplitude in case of whole body vibration.
1) Δ a mm, the discriminated amplitudes from several amplitudes, in case of increased series existed in the range from 0.24 to 0.63 mm and in case of decreased series existed in the range from 0.17 to 0.73 mm.
2) The higher the frequency of vibration, the smaller was the Δ a mm in case of transversal and longitudinal vibration.
3) Δ a/a in case of the smallest amplitude was greatest than in case of the other amplitude.
4) The discrimination in case of amplitude was weaker than in case of frequency.抄録全体を表示PDF形式でダウンロード (209K) -
岡田 晃1962 年 17 巻 2 号 p. 107-108
発行日: 1962/06/10
公開日: 2009/04/03
ジャーナル フリーExperimental studies were made, with the following briefly stated results, on the ratio sensibility which set on the basis of amplitude 1 mm, in case of whole body vibration.
The loudness of vibratory sensibility, in case of twofold the stimuli, agreed nearly with the magnification of stimuli. But in case of three-, four- and fivefold the stimuli, the loudness of vibratory sensibility was exceedingly greater than the magnification of stimuli. The relation between the loudness of vibratory sensibility and the stimuli, in case of vertical vibration at 10 c/s, is represented approximately by
S=2n-1
where n: the amplitude in mm
S: the number which show the loudness of vibratory sensibility against the vibration of amplitude 1 mm in fold.抄録全体を表示PDF形式でダウンロード (152K)
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