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| 概要 |
Some results of the snap-reading and the time study of preparing the ground covered with sasa and weed hard-wood are reported in this paper. At three hundred sixty-three observational time points whic...h were systematically laid out at 2.5 minutes interval, the motions of two workers were recorded. From these records, the ratio of the allowed time to the total work hours was $24.24 pm 4.49 %$, and the ratio of the net working hours was $75.76 pm 4.49 %$. In twenty-five $5 \times 5$m^2$$ plots, time required in the main work was measured. The time required increased according as the size and the number of weed hard-wood increased, as the slope of the stand in creased, and as the density of sasa increased. From the least-square soluion of those data in twenty-five plots, the following equotion was obtained, y=-10.7021+0.1749$X_1$+0.4937$X_2$+0.01717$X_3$ where pt is the time required in preparing a $5 \times 5$m^2$$ ground (in min.). $X_1$ is the number of sasa per 1 $m^2$ ground. $X_2$ is the degree of slops. $X_3$ is the total basal area of the trees at b.h. on a plot (in $dm^2$).続きを見る
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はしがき I 調査地ならびに作業の概況 II 調査方法ならびに調査結果 A) 要素時間分析 i) 調査時点の抽出ならびに観測 ii) 要素作業時間および要素作業時間割合の推定 B) 功程調査 III 摘要および考察 Resume
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Mendeley出力
KJ00005470427