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Filtering by: Creator Brunner, James J. Remove constraint Creator: Brunner, James J. Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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  • The potential of using log biometrics to track sawmill flow

    Creator:
    Peterson, Matthew G.
    Abstract:
    We studied the feasibility of using end-grain characteristics to match individual boards and cants back to their parent Douglas-fir (Pseudotsuga menziesii) logs. After reviewing marking/reading and biometric automated identification systems, we focused on end-grain biometrics because they appear to have the most promise for sawmills. Biometric identification requires that every...
    Resource Type:
    Masters Thesis
    Full Text:
    . Brunner We studied the feasibility of using end-grain characteristics to match individual boards

  • Filling a rough-mill cutting order using a fuzzy logic controller

    Creator:
    Anderson, James D.
    Abstract:
    Because of their high cost, reducing the number of boards used to fill an order of dimension parts is an important goal in a lumber rough mill. FLCO (Fuzzy Logic Cutting Order) is a computer program that achieves this goal. Using the concepts of fuzzy logic control, FLCO provides a...
    Resource Type:
    Masters Thesis
    Full Text:
    controller AN ABSTRACT OF THE THESIS OF James D. Anderson for the degree of Master of Science in

  • Three strategies for tree bucking at the harvest site: consequences for the sawmill

    Creator:
    Acker, Timothy A.
    Abstract:
    The timber shortage in the Pacific Northwest is forcing sawmill owners to improve the competitiveness of their harvesting and processing operations. A computer simulation and financial statement analysis were used to compare the processing efficiency and profitability of three bucking strategies: log cost minimization (traditional 40-foot preferred-length logs); hauling length...
    Resource Type:
    Masters Thesis
    Full Text:
    Bucking at the Harvest Site: Conseciuences for the Sawmill. Abstract approved: Charles C. Brunner The

  • Simulating changing diameter distributions in a softwood sawmill

    Creator:
    Salichon, Maxence C.
    Abstract:
    Sawmills are very complex systems that involve many manufacturing processes. The variability of their raw material adds further to this complexity as each log has characteristics that determine its processing path. Therefore, computer simulation is a very useful technique for analyzing sawmill performance. This thesis describes a simulation computer model...
    Resource Type:
    Masters Thesis
    Full Text:
    , 2005. Title: Simulating Changing Diameter Distributions in a Softwood Sawmill. Charles Brunner Timo y

  • Image segmentation for defect detection on veneer surfaces

    Creator:
    Zhong, Yuan, 1956-
    Abstract:
    Machine vision is widely used in scientific areas and non-wood using industries, but the extreme variability of wood has limited its adoption by forest products industries. However, it is now becoming a key factor in further automation of the forest products industry. As a very important part of machine vision,...
    Resource Type:
    Dissertation
    Full Text:
    ACKNOWLEDGEMENTS I would like to express my sincere gratitude to my major professor, Dr. James Funck, for his

  • Stability of reporter gene expression and RNAi in transgenic poplars over multiple years in the field under vegetative propagation

    Creator:
    Li, Jingyi
    Abstract:
    Stable expression of transgenes is required for commercial uses of genetically engineered trees. To better understand the stability of transgene expression under field conditions, we studied transgene expression and RNA interference (RNAi)-induced transgene suppression in 2,480 transgenic poplars (460 transgene insertion events) over three years. Stability of expression was assessed...
    Resource Type:
    Dissertation
    Full Text:
    Amy M. Brunner Stable expression of transgenes is required for commercial uses of genetically

  • Expression and Function of Populus Homologs to TERMINAL FLOWER 1 Genes: Roles in Onset of Flowering and Shoot Phenology

    Creator:
    Mohamed, Rozi
    Abstract:
    We isolated and characterized the expression of two genes from Populus trichocarpa that are homologous to the TERMINAL FLOWER 1 (TFL1) gene from the model annual plant Arabidopsis. In Arabidopsis, overexpression of the TFL1 gene extends the vegetative growth phase, and the homozygous mutant tfl1 allele causes early flowering and...
    Resource Type:
    Dissertation
    Full Text:
    : __________________________________________________ Steven H. Strauss Amy M. Brunner We isolated and characterized the expression of

  • Identifying candidate genes associated with cold adaptation in Douglas-fir using DNA microarrays

    Creator:
    Howe, Dana Kathryn
    Abstract:
    In forest trees from temperate and boreal regions, cold acclimation is an important adaptive trait that involves changes in gene expression and physiology. Genecological, quantitative genetic, and QTL studies have been used to study the genetics of cold acclimation in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), but the genes responsible for...
    Resource Type:
    Masters Thesis
    Full Text:
    Microarrays. Abstract approved: Glenn T. Howe Amy M. Brunner

  • The effect of edging red alder lumber on cut stock production

    Creator:
    Schott, Kermit A.
    Abstract:
    It has been observed that edging flitches into lumber unnecessarily reduces the yield of cut stock. This research investigated the yield of cut stock from unedged red alder (Alnus rubra) flitches, and compared it to yields attained from boards subjected to a variety of edging strategies: conventional, light-edging, actual, severe...
    Resource Type:
    Masters Thesis
    Full Text:
    Lumber on Cut Stock Production Abstract approved: Dr harles C. Brunner It has been observed that edging

  • Void fraction variations in a fractal-like branching channel network

    Creator:
    Cullion, Rebecca
    Abstract:
    Two-phase flow in a fractal-like branching microchannel heat sink may have enhanced heat transfer capabilities over single phase flow in the same branching channel network. In order to exploit this potential, a complete understanding of flow boiling in this geometry is required. The fractal-like geometry is similar to that of...
    Resource Type:
    Dissertation
    Full Text:
    . Charles Brunner, Dr. Murty Kanury, Dr. James Liburdy, and Dr. Vinod Narayanan for serving on my