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ŠUMARSKI LIST 7-8/1968 str. 28     <-- 28 -->        PDF

4.
Clemen t R.: Acid Paste Method Highly Successful in Commercial Operations,
Naval Stores Rev., 6/1967.
5.
Ezekie l M.: Methods of Correlation and Regression Analysis, New York 1965.
6.
Häberl e S.: Brauchen wir mathematisch-statistische Methoden in der Arbeitswissenschaft,
Allg. Forst- u. Jagdztg, 12/1965.
7.
Neidhard t N.: Pokušaj teoretsko-financijskog razmatranja o smolarenju, Šum.
List Vol. IV/1930.
8.
Triši n V. S., Borodi n M. M.: Tehničeskoje normirovanije trudov v lesnom
hozjajstve, Lesn. Prom., Moskva 1965.
9.
Voronenk o B. G : Opitnaja podsočka v Sovjetskom Sojuze, Goslesbumizdat,
Moskva-Lenjingrad 1961.
DEPENDENCE OF TIME EXPENDITURE FOR COLLECTING AUSTRIAN
PINE RESIN ON WORKING CONDITINOS


Summary


On the basis of results of previous investigations the author assumes that the
time expenditure required by a work element depends on the height of the cup
above ground, the inclination of the slope, and the resin content in the cup.


The correlative connection between the time consumption by the work element
on one hand, and the height of the cup above ground, the inclination of the slope,
and the resin content in the cup on the other, is defined by means of a multiple
correlation and algebraic-graphical method.


On the basis of results the following conclusions are drawn:


1.
Expenditure of net time for the collection of resin depends on the height of
the face above ground, the inclination of the slope, and the resin content izi
the cup.
By applying the algebraic-graphical method of multiple correlation it was
proved that between the time expenditure and the mentioned factors there
exists a very close correlative connection; by means of a third approximation
a satisfactory result was obtained.


2.
At a definite height of a face above ground and inclination of the slope, the
expenditure of net time (or of the time with addition) for the collection of
the resin per unit weight depends on the resin content in the cup; with
increasing the resin content from 12 to 29 dkg. the mentioned time expenditure
decreases, and thereafter increases.
3.
The time spent on walking from tree to tree with respect to the weight unit
of collected resin decreases with increasing the resin content in the cup.
4.
By adding together the times under 2) and 3) as represented in Tab. 2 and
Fig. 11. it is possible to determine the minimum of the total time expenditure
per weight unit of collected resin (with respect to the resin content in
the cups). The minimum time expenditure represents at the same time also
the minimum work expenditure requiered for the collection of resin.