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...
We investigate the optimal harvesting strategies for McKendrick type population models. Models of this type endow the population with a continuous age structure. They consist of a partial differential equation with a boundary condition which involves an integral of the solution. We study two problems, the first concerns the yield...
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...
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...
A procedure for model-assisted climate impact assessment is
developed. The approach combines data from observations and
atmospheric general circulation models (GCNs), and provides the basis
for a potentially valuable means of using information derived from
GCMs for climate impact assessments on local scales.
The first component of this procedure is...
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...
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Glen E. Murphy
To remain competitive, the forest products industry needs to look for new
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...
Large dams and their respective reservoirs can provide renewable energy and water security, but also profoundly alter riverine ecosystems. In the Pacific Northwest, dams and reservoirs cause discontinuities in river networks that have been particularly problematic for anadromous fishes. As barriers to the upstream and downstream migration of anadromous fishes,...
The purpose of this manuscript style dissertation was to increase understanding of the experiences of counselor's with compassion fatigue as they participated in a yoga intervention. Compassion fatigue is a condition that creates both physical and psychological impairment as a result of working in the helping role. Yoga is an...
By inverting EarthScope long-period magnetotelluric (MT) data from the southeastern United States (SEUS), we obtain electrical conductivity images that provides key insights into the geodynamics of this region. Significantly, we resolve a highly electrically resistive block that extends to mantle depths beneath the modern Piedmont and Coastal Plain physiographic provinces....
This dissertation considers two approaches for testing hypotheses in
unbalanced mixed linear models. The first approach is to construct a design with
some type of structure or "partial" balance, so that some of the optimal properties of
a completely balanced design hold. It is shown that for a particular type...
The research involved development of two ecological
simulation models to explain the complex dimensionality of
chinook salmon (Oncorhynchus tshawytscha) life history
structure (represented by the age composition of the
spawning stock) and management difficulties entailed in the
complexity.
Since different sizes of chinook salmon are thought to
adapt differently to...
Perspective-taking has been defined as the tendency
to take the point of view of another, to put oneself in
the psychological shoes of another. This ability has
been argued to be an important component of social
interaction. This research examined three components of
perspective-taking: a general measure of perspective
taking...
Theoretical derivations to describe pan evaporation, E[subscript p], and evapotranspiration, ET[subscript r], were developed based on a flow equation expressed as the product of the driving force for vapor between the evaporative surface and a plane of reference times a conductivity coefficient of vapor through air. Under the assumptions of...
The purpose of this study was to examine the perceptions of
job stressors in student services professionals. The research
procedures examined the functional aspects of a position with
four dimensions of job stressors: role-based stress, conflictresolution
stress, task-based stress, and stress due to the inefficiency
of others. The independent variables...
Women entrepreneurs are an economic force within the American and Oregon economy. Women are starting businesses at two to five times the rate of men. There has been significant research detailing the demographics, barriers, and business management skills of women business owners. Yet, the research to date has been limited...
Belowground carbon (C) storage and quality of soil organic matter (SOM) in
forest soils have implications for sustainable forest management and C sequestration,
but how these pools change in response to management is poorly understood. I
investigated whether fertilization and competing vegetation control, applied alone or
in combination early in...
The purpose of this study was to determine the extent to which
the philosophy, administration and implementation of public recreation
and leisure service has contributed to the democratization of black
Americans for the period 1906-1972. The study attempted to describe
the interplay and connection between the black, subordinated community
and...
In many areas of the developing world, the continued overexploiting forest resources has the potential to have significant detrimental impacts be placed on sustainable forest management (SFM) can help communities and organizations responsibly manage and utilize the remaining forests over the long term. Ethiopia’s forest lands provide tangible benefits from...
Job aids are instruments used on the job to improve
human performance by enhancing the knowledge and/or skills
of performers. Conventional job aids are usually printed
on paper; examples include checklists, recipes, and decision
tables.
Expert systems are computerized job aids which interact
with novices to help solve problems normally...
Over the next quarter century there will be about
an eight-fold increase in the volume of wood harvested
annually from New Zealand's steep terrain radiata pine
plantations. With the move to steeper terrain it is
expected that there will be a trend towards considerably
smaller landings. With smaller landings final...
The research developed a methodology to code and quantify eye movement patterns as a function of a neuro-linguistic programming strategy elicitation process. Secondarily the research established methodology that identified the degree of consistency among certain certified Neuro-Linguistic Programming Practitioners while they rated eye movements. The study reviewed literature in the...
Although the career choice decision for women is
recognized as a complex process, there is little
understanding about how the influencing factors affect
the choices of disadvantaged women returning to community
colleges. This study was concerned with understanding
how certain factors influenced the career choices of this
population.
A random...
Over the past 20 years, there has been a steady increase in the popularity of online gaming in the United States culture. There are many factors that have contributed to this spike in popularity, but the most significant are advancements in technology, televised competitions, social media, lucrative cash prizes, product...
The purpose of this study was to investigate the relationship between moral development and year in school, gender, and personality type for university undergraduates. Moral development was measured by the Defining Issues Test (DIT) and personality was assessed using the Myers-Briggs Type Indicator (MBTI). The sample consisted of 320 freshmen,...
The central purposes of this study were to review the
historical sources of David Kolb's formulation of experiential
learning theory, and to determine the effect and
application of Kolb's theory and Learning Style Inventory
as reflected in the literature between 1971 and 1990.
It was found that Kolb based his...
The loss of all deuterium labels from previous feedings of [2-²H]-,
[3,3-²H₂]-, and [2,3,3-²H₃]arginines had indicated the possible intermediacy
of β-hydroxy- and β-ketoarginine (30 and 31, respectively) in the
biosynthesis of the streptolidine portion of streptothricin F (la).
In order to confirm or refute this evidence, D,L-[2,3,3,5,5-²H₅]-
arginine (32) was...
Understanding the spiritual worldview of clients is a core element of multicultural competency for mental health professionals. One spiritual and religious population is members of The Church of Jesus Christ of Latter-day Saints and related Latter-day Saint populations. The Book of Mormon is an important sacred text of this population....
Coastal communities in the U.S. Pacific Northwest (PNW) are rapidly engaging with the idea that hazards and environmental pressures are changing and may be characteristically different in the near future. This has led to a need for scientific knowledge and tools that can help coastal communities prepare and build resilience...
Using plant fibers as a potential renewable material to substitute for glass fibers in fiber-reinforced polymer composites has been growing since the late 1990s. Due to high demand, there has been a shift towards ‘green concept’ material in many applications. Numerous secondary plant fibers have been explored as a source...
Background: Calls by presidents and legislators to raise the U.S. college graduation rate to 60% by 2025 have required educational institutions to find ways to increase accessibility and quality while simultaneously reducing costs (Bautsch, 2018; Smith, 2017). Private foundations such as the Bill and Melinda Gates Foundation are getting involved...
This study identified the skills necessary to successfully complete the
beauty culture program of Alberta. The (Alberta) beauty culture teachers (N =40)
were surveyed, with their responses being used to assess the perceived skills.
The instument, a 41 item survey, was established through the use of a
Delphi panel to...
Almost two decades have passed since the publication of Jackson and Leffingwell’s (1999) influential article on math anxiety in preservice school teachers and their worst math experiences. The present dissertation represents both a replication and an extension of the original study. Study Arm A was the replication study with preservice...
The change process for clients in long-term adolescent residential treatment has received heightened research attention for the past 15-year (Gass, 2006). The research indicates that individuals enrolled in long-term adolescent residential treatment centers, on average, experience improved psycho-social functioning to degrees that are statistically and clinically significant (Behrens & Satterfield,...
Moisture content management is a key requirement to improve forest harvest residue economics for bioenergy production. This dissertation aims to contribute towards better management through these three general objectives (1) Determine average moisture content of fresh forest harvest residues and its changes over the different seasons of the year, focusing...
The purpose of this investigation was to determine whether
certain variables have significant bearing on the education of adult
undergraduate students. During the 1970's Pace (1977) and Shaver
(1978) suggested that the "quality of effort" that college and
university students invest in their own learning and development is a
key...
An economic analysis and optimization of forest biomass processing and transportation at the operational level is presented. Renewable sources of energy have captured the interest of public and private institutions to develop cost-effective supply chains to reduce dependence on fossil fuels. The production of energy from forest harvest residues constitutes...
Industry, business, military and other government agencies
are increasingly recognizing the significance of human factors in the
productivity of complex organizations. Educational institutions are
no exception to this fact. It is assumed that morale and productivity
are related to the managerial style of the supervisor. Leaders are
faced with the...
The purpose of this study was to explore factors
which influence Taiwanese vocational teachers'
participation in program evaluations, use of evaluative
results and, in turn, program improvement. Twelve
Taiwanese public vocational high school teachers were
interviewed during February and March 1992. To confirm
the responses of the teachers, 12 school...
Recent catastrophic wildfires have forced the forest management community to develop new strategies for reducing forest fuels. Tightly spaced understory trees often create a fire ladder allowing surface fires to encroach into the crowns of overstory trees. This situation can lead to intensive, catastrophic, stand-replacement forest fires. Mechanical removal or...
Student success in terms of college preparedness and postsecondary college enrollment is one of the current major focus in the school counseling profession. The current literature indicates that school counselors can positively influence their students’ needs and performance outcomes, yet the profession is calling for more evidence to support the...
Effective separation of lanthanides (Ln) from the minor actinides (MA) is a crucial technical challenge to closing the nuclear fuel cycle. This separation is a necessary prerequisite to transmute long-lived isotopes of Am and Cm, which will allow a reduction of the repository volume, thermal load, and radiological toxicity of...
While fluorochemicals have been detected all over the world and in wastewater
treatment plants, the effect of wastewater effluent on the receiving waters has not been
evaluated. In the first study, the mass flow of fluorochemicals emanating from
wastewater treatment plants along the Glatt River in Switzerland was evaluated. The...
Island biogeography has strongly influenced the study of biodiversity because
archipelagos provide natural model systems for investigating patterns of diversity and the
processes that shape ecological communities. I investigated the influence of area and
isolation of islands (n = 32) in the Gulf of California, Mexico on patterns of richness,...