Based on the above modeled bucking procedures, a directed graph of network analysis was adopted for optimal bucking.
The principle of the Dijkstra algorithm for the shortest path problem was adopted to find the longest path in the directed graph of tree-stem bucking (Sessions 1988).
The optimal tree-stem bucking system used in this research was written with Visual Basic (VB) Version 6.
The optimal bucking system consists of the following modules: File, Run, View, and Help.
User input to the computer-based bucking system includes species, butt diameter, and the number of grade zones for each tree to be bucked.
Since tree-stem and bucking solution data are saved in the database, the system allows the user to view and print out the data for other uses.
The logger is an experienced crosscutter and has many years of experience on bucking operations with the logging company in the region.