Data on motor carrier commodity weights collected in 1976
at Oregon weigh stations by the Public Utilities Commission and the
Department of Transportation are not in a form that readily allows
for commodity flow analysis. A methodology is presented that reduces
existing forest product commodity data into a graphically displayed...
Foresters care about site productivity and stem quality in Douglas-fir plantations for many reasons. The profitability of forest land and the economic returns on silvicultural investments are directly related to site productivity. Thus, understanding the relationships among Douglas-fir productivity, stem form and site characteristics is important economically. My objective was...
There are between one and two million
occurrences of head injuries in this country each
year causing an estimated 140,000 deaths. Fifty to
seventy thousand who survive are left with such
intellectual impairment as to preclude returning to a
normal life. The purpose of this study is to
investigate the...
The Purpose: The purpose of this study is to develop an original validated Lickert-type attitudinal survey instrument and administer it to selected samples of teachers and students in the Mid-Willamette Valley of Oregon to determine their attitude toward the "purposes," "functions," and "responsibilities" of student councils and place these results...
This was an historical study which described the procedures used by a thirteen-member committee in an attempt to develop a merit-evaluation program for a middle-sized school district in Oregon.
A random sample of 33.5% of the certificated staff of School District
9 were interviewed in May, 1969. The results of...
Sugar pine and western white pine are widely distributed, economically valuable, and ecologically important native tree species in North America. However, white pine blister rust (WPBR), caused by a non-native fungal pathogen, Cronartium ribicola J.C. Fisch. in Rabh., has substantially affected populations of these species. Cronartium is an obligate parasite,...
Wood modulus of elasticity (MOE), also known as wood stiffness, is one of the most important wood properties. Wood stiffness is a measure of the resistance to deflection, and is important because some products such as laminated veneer lumber, plywood, and dimension lumber require stiff and strong wood. Incorporating wood...
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Glenn T. Howe
Wood modulus of elasticity (MOE), also known as wood stiffness, is one of
Wood stiffness is one of the most important properties of lumber and veneer. We studied wood stiffness (modulus of elasticity, MOE), wood density, microfibril angle, and knots in a 25 year-old wind pollinated progeny test (50 families, ~ 373 trees) of coastal Douglas-fir to understand the potential for genetically improving...
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Glenn T. Howe
Wood stiffness is one of the most important properties of lumber and veneer
Douglas-fir (Pseudotsuga menziesii) is a widely distributed, ecologically important, and commercially valuable tree species in North America. However, climate change is expected to adversely impact Douglas-fir trees, and assisted migration may become necessary to lessen the effects of climate change. Because drought stress is one of the projected effects of...
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Glenn Thomas Howe
Douglas-fir (Pseudotsuga menziesii) is a widely distributed, ecologically
Native populations of forest trees are specifically adapted to the climates they inhabit. The farther trees are moved from their local climates (i.e., as the climatic transfer distance increases), the more growth and survival tend to decrease. The transfer limit is the climatic transfer distance beyond which plantation performance is...