Search Constraints

Start Over
Filtering by: Subject Lumbering -- Costs -- Mathematical models Remove constraint Subject: Lumbering -- Costs -- Mathematical models Subject Lumbering -- Mathematical models Remove constraint Subject: Lumbering -- Mathematical models

Search Results

  • Simulation of a helicopter yarding system in old growth forest stands

    Creator:
    LeDoux, Chris B.
    Abstract:
    Helicopter yarding systems have become a popular tool in removing timber from steep slopes, sensitive soils, limited access areas, and environmentally sensitive stands. Little is known about the system's dynamics. This study is part of a research project to explore "advanced" logging systems as to their economic efficiency and environmental...
    Resource Type:
    Masters Thesis

  • Development and comparison of stand-level bucking optimization methods

    Creator:
    Laroze, André J.
    Abstract:
    Heuristics based on Monte-Carlo Integer Programming (MCIP) and Tabu Search (TS) techniques were developed for generating easily implementable bucking rules that are applicable to entire stands (as opposed to individual stem classes), and for selecting the rule-set that provides the best feasible solution (given log prices and market constraints). A...
    Resource Type:
    Dissertation

  • Log breakdown using dynamic programming and 3-D log shape

    Creator:
    Zeng, Yimin
    Abstract:
    A log breakdown model, SAW3D, was developed to optimize lumber recovery from logs of any shape in 3- dimensional space. The program uses a polygonal cross section representation of logs; three nested dynamic programming (DP) algorithms to optimize log breakdown, flitch and cant edging, and trimming operations; and a simple...
    Resource Type:
    Masters Thesis