낙엽송 간벌 작업에서 순수작업시간과 심박수에 따른 휴식시간과의 관계 연구 = Studies on the relation between Net Working Time and Recess Periods from Pulse Frequence in Thinning operation of Japanese Larch

다국어 초록 (Multilingual Abstract)

The pupose of this study was to standardise the forest working system to design the intensity of working system in felling operation of the thinning forest in Korea as well as to contrive the improvement of working method and the increase of productivity.
For the purpose of investigating these, element working was classified by felling operation in Japanese larch thinning forest, and recess periods and pulse rates were measured and analyzed. The results were as follows :
1. An estimated Net working time is resulted in 237sec./tree for at average DBH 14.5cm.
2. The pulse frequence per minute were 120 pulses in average in the choice of fellingdirectory, 123 pulses in the circumference, 129 pulses in the felling operation, 132 pulses in hang-up and 139 pulses in the novement.
3. From the results of the Hulse frequence analysis, average putse frequence in net working time showed 131 pulses pef minute.
4. Excess DLG(DauerleishHgsgrenze) which indicates the working intensity Thor'ed 21 pulses per minute.
5. An estimated recess period is resulted in 140sec. over net working time(180sec.).
6. The ratio of recess period(140sec.) over net working time(180sec.) showed 77%.