Using research on student motivation as well as Project-Based Learning as a theoretical framework, this thesis outlines the creation process for a set of curricula. These curricula were designed to address topics of markedly low student motivation in the first term of an introductory physics with calculus course (PH 211)...
During the early fall of 1998, I made contact with Therese Graf Tanalski
when I was searching for family members of deceased Hall of Fame
members. Therese grew up in Corvallis, attended OSU, and married a 1944
CE graduate, Theodore T. Tanalski.
During my conversations and correspondence with Mrs. Tanalski...
An analysis was conducted to test current theories
regarding education, income, and marital satisfaction as
determinants of parenting in different ways for men and
women. The gender specific issues in parenting to be tested
were: 1) Education is positively related to parental
involvement for both men and women. 2) Marital...
The purpose of the study was to investigate process and
stability issues in intermarried families utilizing data
from a group of American Indian intermarried families and a
group of endogamous European American families. Stability
issues such as marital satisfaction and overall problem
solving were investigated by comparing scores between the...
North American beavers (Castor canadensis) are ecological engineers that improve biodiversity and can improve the health of riparian ecosystems. Beavers are generalist herbivores with some evidence of species preference, utilizing woody material for both food source and dam construction. In the South Slough National Estuarine Research Reserve, Charleston, Oregon, a...
Background: The ability to produce rapid muscle force and joint torque is important for performance in sports, injury prevention and rehabilitation, and balance recovery. One way to measure rapid torque production is rate of torque development (RTD), which is the slope of the torque-time curve. Interventions aimed at increasing RTD...
Background: The capability of an individual to produce force rapidly is important for performance of sporting activities and to stabilize a joint to protect against injury. Rate of torque development (RTD) and contractile impulse (CI) may be more effective than peak torque in assessing rapid torque production. The relationship between...
Background: Certain knee movements place the anterior cruciate ligament (ACL) at risk of injury. These injuries commonly affect athletes especially at the end of events. The purpose of this study was to determine the effects of exhaustive exercise on frontal plane hip and knee mechanics during two tasks in order...
The ability to quickly generate torque of the triple extensors is critical during rapid movements, especially when there is not enough time to reach peak torque. Rate of torque development (RTD), which is the rate of rise of the torque-time curve, is a commonly used measure of rapid torque generation....
The nervous system has an integral role in rapid torque production of the lower extremity, which is often necessary for proper motor response to a dynamic environment. The nervous system is complex with numerous pathways, including spinal motor control networks, which influence the ability to move. However, few studies have...
Falls are a common problem among older adults, including those who are relatively healthy and living independently. Exercise has been recommended as an intervention to reduce falls by slowing and/or reversing age-related declines in balance, strength, and mobility. However, it remains unclear which types or combinations of programs are most...
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SamuelT. Johnson
Falls are a common problem among older adults, including those who are
Positive youth development posits that all youth possess the capacity to change and grow as they interact with their contexts. That capacity is activated and nurtured by a beneficial ecological environment often unavailable for homeless youth. Only a limited number of studies focus on the positive development and strengths of...
Managing invasive species is vital to preserving native species and maintaining the integrity of environments and ecological roles. Rats are one of the most prolific and intrusive invasive species that have successfully cohabitated with humans over centuries as we have expanded and advanced our societies. Thus, rats have historically been...
Floating guidance structures are intended to promote safe in-stream passage for juvenile salmon migrating downstream through reservoirs. However, the ability of an engineered structure to guide fish to safe passage has been primarily tested either after large-scale implementation in existing reservoirs or in laboratory studies and computer simulations without live...
My thesis explores the poetry of Samuel Taylor Coleridge and William Wordsworth as emblematic of Western philosophy and literature's longstanding preoccupation with the relationship between mind and matter. The poets' attempts to mediate their languages and sensibilities with "real nature" have a complicated legacy for today's readers, as Romantic literature...
The goal of this project is to create a lightweight radioactive isotope identification program for an embedded system using the C programming language to perform isotope matching on a subset of isotopes. First, the physics behind radioactive spectra and their key features are explained. Next, the characteristics of the spectra...
Floating guidance structures are intended to promote safe in-stream passage for juvenile salmon migrating downstream through reservoirs. However, the ability of an engineered structure to guide fish to safe passage has been primarily tested either after large-scale implementation in existing reservoirs or in laboratory studies and computer simulations without live...
The hermit thrush (Catharus guttatus) and the varied thrush (Ixoreus naevius) are focal species for conservation of forested habitats in Oregon. Although habitat associations have been defined for both species, their response to changes in vegetation following wildfire has not been well studied. To help fill this information gap, I...
Boulder transport models have been used to develop a historical record of hydrodynamic events. This is done by evaluating the size, location, and composition of boulders that have been removed from their region of formation. Boulder transport is difficult to predict, even under laboratory conditions.
Experiments were conducted to evaluate...
High temperature microchannel heat recuperators (HTμRs) offer an efficient means of improving reactor process thermal efficiency by offering smaller form factors due to increased heat transfer surface area density and volumetric heat transfer rate over traditional heat exchanger designs. To date, HTμRs face cost and reliability challenges. In this work,...
To improve the performance of solid oxide fuel cells, a secondary power cycle can be driven by the recuperation of exhaust gas heat. Microchannel recuperators are attractive for waste heat recuperation due to compact form factors which also minimize the mass of the expensive superalloys required. This paper introduces a...
Despite years of research, females continue to have a higher incidence of non-contact ACL injuries. One of the major findings of this research is that males and females perform certain tasks, such as, cutting, landing, and single-leg squatting, differently. In particular, females tend to move the knee into a more...
This study conducts follow up research to my Mechanical Engineering Senior Project that was completed in March 2015. It follows the Student Powered Hydro and Entertainment Device (SPHED) as it is used in various middle school and high school classrooms. SPHED has three modules: a power generation module, a hydropower...
There is limited knowledge regarding differential training as it relates to balance. The purpose of this study was to compare the performance and retention of a differential training balance program and a traditional balance program. Thirty-three Division I soccer athletes volunteered to participate and 29 completed the study. Participants were...
Using robot motivation to see effects on modified ride-on car interaction has not yet been explored. Previous research has looked at the use of robots to encourage/motivate children (Bharatharaj et al., 2017; Conti et al., 2017; Johnson, 2003) and the benefits of using modified ride-on cars have also been previously...
This investigation identifies one pathway by which domestic violence increases the potential for child abuse in both mothers and fathers of newborns. Longitudinal data from 181 couples with firstborn infants were used to test a mediational model linking domestic violence and the family's risk of child abuse. Analysis of covariance...
Schools are increasingly expected to prevent and decrease violence, substance use, and other problem behaviors linked to academics and prepare students to be contributing members of society. One approach with proven success in promoting positive outcomes related to a broad range of student behaviors and personal characteristics is social-emotional learning,...
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Samuel Vuchinich
Schools are increasingly expected to prevent and decrease violence
A primary aim of bereavement research is to alleviate suffering and promote well-being at the junction of life and death for the survivor in an attachment relationship. Bereavement research in the last decade has focused primarily on examining grief recovery within the context of intrapersonal processes. This emphasis has often...
This study posited that maturational growth in emotion regulation should be associated with reduction in hyperactivity during the transition into adolescence. The longitudinal design assessed emotion regulation and hyperactivity in an urban community sample of children in three waves, at ages 10.6, 11.6, and 12.6 years. A parallel growth curve...
North American beavers (Castor canadensis) are ecological engineers that improve biodiversity and can improve the health of riparian ecosystems. Beavers are generalist herbivores with some evidence of species preference, utilizing woody material for both food source and dam construction. In the South Slough National Estuarine Research Reserve, Charleston, Oregon, a...
Family therapists have proposed that specific types of
family interactions are dysfunctional for the family system
and can produce long-term negative effects for the child.
They further propose that, for healthy family functioning to
be maintained, parental alliances must be sustained and
excessive cross-generational coalitions (parent-child
alliances) must be blocked....
Over the past ten years there has been a dramatic
increase in the number of drug addicted teens in this
country. Accompanying this increase in drug usage of
adolescents has been an rise in the number of treatment and
evaluation centers to serve the adolescent drug abusing
population. Comprehensive and...
This follow-up study investigated the effect of a systems-oriented graduate
training program upon system thinking among practitioners who had completed training,
using a post-test only, treatment-comparison group design. The subjects consisted of
practitioners matriculated through two counselor-related programs at a medium-sized
college in the Northwest during the years 1985-1991. A...
These two studies investigated maternal engagement and retention in a voluntary, home-visiting program. The program screened families at the birth of their first child for risk characteristics associated with poor child and family outcomes. Higher risk families were offered regular home visits and support for up to 5 years. In...
Brook trout (Salvelinus fontinalis) populations currently exist in less than half of their historic range in the state of New Jersey. The remaining populations are confined to the northwestern part of the state in the Highlands, Appalachian Ridge and Valley, and Piedmont physiographic provinces, with the exception of Mason's Run,...
This study examined the association between poverty and child neglect. The existence of a general association has been established for some time. However, there is much debate, and little detailed research, on the specific processes that create this association. This study focused on the form of neglect that involves the...
This paper will focus on the “possible economic, environmental and other effects” as they relate to one former military base (BRAC, 2013). With a focus on natural resource sustainability and stakeholder engagement, the research and findings within this paper will answer the question: How can understanding the process of military...
In 2014, the Washington State Legislature directed the creation of the Fish Barrier Removal Board (FBRB), a multi-entity committee tasked with the development of a statewide strategy for removing anadromous fish barriers. The strategy shall identify watersheds with the greatest potential for salmon and steelhead recovery and implement the removal...
Relapse is a common occurrence in the treatment of
adolescent substance abuse. It is estimated that one out of
three adolescents will relapse after treatment termination.
Although much attention has been given to family factors which
influence an adolescent's use and abuse of drugs, this same
vigorous attention has not...
This study examined associations between participation in voluntary out-of-school programs (e.g., scouting, Boys' and Girls' Clubs, 4-H, YMCA/YWCA) in adolescence and four negative outcomes: school dropout, early sexual activity, delinquency, and drug use. A prospective longitudinal design had collected four waves of interview data on a national sample of 15,000...
Pesticides are widely used to control undesirable pests and may be applied directly to water or lands directly adjacent to water. There can be unintended consequences, however, to native, threatened, and endangered species. There is little information on the impacts of aquatic pesticides and best management practices (BMPs) to NOAA...
In the most recent decades, there has been extensive loss of seagrasses within the Indian River Lagoon estuary on the eastern coast of Florida. This decline poses a significant threat to the ecological function of the ecosystem, as well as to the social and economic wellbeing of the surrounding communities....
This report describes the findings from a 22 question survey of the 104 member Montgomery West Homeowners Association (MWHOA) in Gaithersburg, Maryland. Resident’s perceptions of their practices as related to the neighborhood storm ponds, stormwater, and how homeowner practices contribute to non-point source pollutants. An understanding of Green Infrastructure (GI)...
For next-generation molten salt reactors, there is a need to be able to characterize the corrosion of the molten salts contained within them. One such tool that may be used to accomplish this is a dynamic ref- erence electrode, or DRE. Here, an aqueous dynamic reference electrode (aDRE) was developed,...
An increasing number of children care for
themselves (self-care) while their parents are employed
outside the home. A literature review suggested a
connection between child care concerns and employed
parents' increased stress, role overload, and lower
productivity. This study evaluated the impact of an
educational training program for families with...
The purpose of this study was to better understand the relationship between selected academic factors and the persistence of GED recipients in community colleges in the state of Oregon. With this purpose in mind, the study addressed the following research question: Is there a relationship between selected academic variables and...
This study examined the social and contextual factors that lead to differences in
the way biracial adolescents interpret their racial identity. Using 11 interviews with a sample of biracial youth between the ages of 14 and 17-years-old, this study also explores
the strategies these individuals use to achieve social validation...
This research explores the barriers that prevent stakeholders from changing their hobby behaviors to help prevent the spread of invasive species in Oregon. Invasive species are increasingly causing economic and ecosystem harm in Oregon. This is among the first studies done on the human dimensions of invasive species. Using the...
Guided by Ogbu's cultural-ecological model of human development, this comparative study offers a comprehensive and explicit way of conceptualizing and measuring parenting within the cultural context. Multiple hypotheses are generated for the cross-cultural comparison of parenting styles in Asian Americans and European Americans. The study uses the National Longitudinal Study...
Growing concern regarding the health effects of PFAS exposure through drinking water remains an issue at the forefront of many regulatory hurdles. Current data suggests that PFAS can be the cause of many negative health effects including changes in birth weight, thyroid disease, decreased fertility, and some forms of cancer....
Control rod calibration experiment results for the Oregon State TRIGA® Reactor (OSTR) immediately following LEU conversion in 2008, and MCNP® 5 predicted rod worths from the 2008 LEU Conversion Safety Analysis Report (CSAR) are discussed. The reactivity worth of the four OSTR control rods are measured using the rod-pull method....
After a joint injury, arthrogenic muscle inhibition (AMI) leads to decreased neuromuscular control and strength, as neural inhibition prevents volitional activation of the entire motor neuron pool. Traditional rehabilitation techniques such as strength training are unable to effectively reduce AMI and there is a need to identify interventions that can...
Six experiments were carried out with Single Comb White Leghorn laying chickens to
assess the effect of feeding a source of direct-fed microbials (Lactobacillus; Lacto) and its
carrier [condensed cane molasses solubles (CCMS)] on the retentions of fat, nitrogen and
several minerals; on the status of the pH of the...
The study was conducted on the San Dimas Experimenta1 Forest in
southern California. It deals with a field and laboratory evaluation
of several physical and hydraulic properties of the weathered parent
material and suggests how these properties may relate to flood runoff
problems.
A simple correlation analysis shows that only...
The effect of dietary glycosylated vitamin B-6 on the bioavailability
of vitamin B-6 was determined in 4 women. A 44-d metabolic-balance diet
study was divided into a preliminary 8-d adjustment period followed by
two 18-d experimental periods. The subjects were divided into two groups
in a crossover design to compare...
This thesis is a study of the shifting philosophical trends in the works of Samuel Beckett, Donald Barthelme, and Kurt Vonnegut as representations of a greater shift from modernism to postmodernism. I have chosen to explore Beckett's plays Waiting for Godot and Krapp's Last Tape, Barthelme's short stories "Nothing: A...
The significant variation in bubble geometry, as a function of size, has fascinated scientists for hundreds of years. However, a comprehensive explanation for these observations and the underlying physics has eluded researchers. A theoretical model which describes a the relationship between forces that produce spherical cap bubble geometry has been...
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Adapted physical activity and education (APA/APE) service-learning has received considerable attention as a training tool to prepare undergraduate students, including preservice physical education teachers, to work with people with disabilities (Hodge, 1998; Rowe & Stutts, 1987; Taliaferro et al., 2015). Much of this research focuses on demonstrating the effects of...
Physical activity is important for young children with and without disabilities. However, recent investigations have found that young children with and without disabilities spend less time in physical activity than is recommended. Family and music factors have been shown to positively affect physical activity of this population in previous studies....
Natural resource management and policy is ideally informed by the best available science. Natural resource researchers ideally participate in broader impacts activities to extend the reach of their best available research. However, there are many cultural, institutional, and practical barriers to participating in broader impact activities and to incorporating science...
Improper disposal of unused human and pet pharmaceuticals and personal care products (PPCPs) are an emerging public and watershed health threat around the world. Although some waste stream reduction programs such as PPCPs "take-back" exist, there is limited research in current programs on reducing the entry of PPCPs into the...
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Samuel S. Chan
Improper disposal of unused human and pet pharmaceuticals and personal care
The Eastern black rail (laterallus jamaicanesis) is the smallest of the rail species and facing catastrophic decline throughout its home range. According to the U.S. Fish and Wildlife Service, the black rail population has decreased as much as 90%, leading to its proposed Federal listing as threatened under the Endangered...
In liquid sodium environments like those proposed for next-generation sodium fast reactors (SFRs), the presence of impurities in the sodium, particularly chemical species containing oxygen, can lead to increased corrosion on sodium-wetted components. It is important to monitor oxygen concentration in the sodium melt, but temperatures of 500 ℃ and...
Purpose: Children with Down syndrome (DS) may have limited opportunities to engage in independent mobility at the same age as their typically developing peers due to motor delays. The primary purpose of this study was to examine two activity-oriented outcomes - (1) onset of independent driving, and (2) onset of...
Children with disabilities report some of the lowest physical activity (PA) levels among U.S. children. Estimating the magnitude of PA disparities has been previously challenged by underreporting and variability in subsampling of children with disabilities. The present research leverages the redesigned National Survey of Children’s Health to estimate population-level disparities...
Commercial utilization of pollinizing varieties of pears is important
both for pear growers and processors in Oregon. A study
was made to determine the suitability of Comice, Packam's Triumph
and Anjou, the three pollinizing varieties of pears, for dehydration, as
compared to the Bartlett variety which is commercially used for...