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Filtering by: Creator Murphy, Glen Remove constraint Creator: Murphy, Glen Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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  • Wood properties and use of sensor technology to improve optimal bucking and value recovery of Douglas-fir

    Creator:
    Acuna, Mauricio A.
    Abstract:
    There are a number of wood properties which affect the quality of forest products such as lumber and pulp. Of these, wood density is considered by some to be the single most important physical characteristic because it is an excellent predictor of strength, stiffness, hardness, and paper-making capacities. Accurately assessing...
    Resource Type:
    Dissertation
    Full Text:
    Optimal Bucking and Value Recovery of Douglas-fir. Abstract approved: Glen E. Murphy

  • Estimating volume and value on standing timber in hybrid poplar plantations using terrestrial laser scanning : a case study

    Creator:
    Barnett, Jennifer S.
    Abstract:
    Terrestrial laser scanning (TLS) may provide a way to increase timber value recovery by replacing manual timber cruising with a simple-to-use, cost-effective alternative. TLS has been studied in several trials worldwide. Past studies have not compared TLS based estimates with mill estimates of stem value and volume. Three differently stocked...
    Resource Type:
    Masters Thesis
    Full Text:
    : _______________________________________________________________________ Glen E. Murphy Terrestrial laser scanning (TLS) may provide a way to increase timber value

  • Managing woody biomass transportation for improved biomass economics

    Creator:
    Han, Sang-Kyun
    Abstract:
    With rising fuel costs and enhanced environmental concerns, the use of renewable energy has been steadily considered and widely expounded as a solution to the challenges of global energy security and climate change. The use of woody biomass, in particular, has received considerable attention for energy production due to the...
    Resource Type:
    Dissertation
    Full Text:
    Economics Abstract approved: Glen E. Murphy With rising fuel costs and enhanced

  • Evaluation of a prototype NIR system for Douglas-fir wood density estimation

    Creator:
    Belart Lengerich, Maria Francisca
    Abstract:
    Forest products companies in the U.S. face vigorous competition from other wood producers around the world and other industries (steel, aluminum, plastics, composites). To be competitive, forest companies need to control costs, sort and allocate logs to the most appropriate markets, and recover more value at time of harvest. Interest...
    Resource Type:
    Masters Thesis
    Full Text:
    for Douglas-fir Wood Density Estimation. Abstract approved: Glen E. Murphy Forest

  • In-forest log segregation based on acoustic measurement of wood stiffness

    Creator:
    Amishev, Dzhamal Y.
    Abstract:
    To remain competitive, the forest products industry needs to look for new and innovative processes and technologies to not only reduce costs but also to recover more value through the entire seedling-to-customer forest products supply chain. It is well recognized that measuring wood properties of logs in real time during...
    Resource Type:
    Dissertation
    Full Text:
    : ___________________________________________________________________ Glen E. Murphy To remain competitive, the forest products industry needs to look for new

  • An investigation of factors affecting the optimal output log distribution from mechanical harvesting and processing systems

    Creator:
    Marshall, Hamish Douglas
    Abstract:
    Globally the forest harvesting industry is becoming increasingly mechanized. Driving this trend is the desire to increase productivity and reduce cost, as well as to improve labor-related issues. With mechanization comes an in-forest platform for the introduction of state-of-the-art communication and measurement technologies, and powerful on-board computers. These systems have...
    Resource Type:
    Dissertation
    Full Text:
    : ________________________________________________________ Glen E. Murphy Globally the forest harvesting industry is becoming increasingly mechanized

  • Estimating spatial changes in acoustic velocity in felled Douglas-fir stems

    Creator:
    Dowding, Bodie
    Abstract:
    To compete with other building materials, the wood products industry must find a way to increase value and lower costs. Wood stiffness is important for most wood uses. Value can be increased and costs can be lowered by sorting logs for stiffness in the woods using acoustic devices mounted on...
    Resource Type:
    Masters Thesis
    Full Text:
    Douglas-fir Stems Abstract approved: Glen Murphy To compete with other building materials

  • Modeling air-drying of Douglas-fir and hybrid poplar biomass in Oregon

    Creator:
    Kim, Dong-Wook
    Abstract:
    Both transportation costs and market values of woody biomass are strongly linked to the amount of moisture in the woody biomass. Therefore, managing moisture in the woody biomass well can lead to significant advantages in the woody biomass energy business. In this study, two prediction models were developed to estimate...
    Resource Type:
    Masters Thesis
    Full Text:
    : Glen E. Murphy Both transportation costs and market values of woody biomass are strongly linked

  • Forest biomass estimation with hemispherical photography for multiple forest types and various atmospheric conditions

    Creator:
    Clark, Joshua Andrew
    Abstract:
    The importance of accurately identifying inventories of domestic energy, including forest biomass, has increasingly become a priority of the US government and its citizens as the cost of fossil fuels has risen. It is useful to identify which of these resources can be processed and transported at the lowest cost...
    Resource Type:
    Dissertation
    Full Text:
    Multiple Forest Types and Various Atmospheric Conditions Abstract approved: Glen E. Murphy

  • Evaluation of six tools for estimating woody biomass moisture content

    Creator:
    Becerra Ochoa, Fernando Amador
    Abstract:
    Woody biomass transportation costs and market values/costs are strongly correlated with the woody biomass moisture content. Properly managing moisture content can potentially lead to economic and environmental advantages in biomass energy markets. Good management requires accurate moisture content measurements. Therefore, availability of accurate, precise, reliable, and efficient tools to assess...
    Resource Type:
    Masters Thesis
    Full Text:
    : ________________________________________________________________________ Glen E. Murphy Woody biomass transportation costs and market values/costs are strongly