To learn more about the role β-galactosidase plays in rate of
acid production in milk by lactic acid bacteria, several lactobacilli
were examined for this enzyme. Cells from different species were
grown in lactose broth to induce β-galactosidase activity. The specific
activities of whole, solvent treated cells, and of cell-free...
Many trace elements (e.g., Zn, Cd, Mo) are essential phytoplankton micronutrients, making them crucial to the marine ecosystem and ultimately the carbon cycle. Because of this association trace metals are also utilized in paleoceanographic studies (e.g., Mo, Cd). However, not much is known about what controls the cycling of these...
To test the effects of kiln-drying on strength properties of Douglas fir and western hemlock, temperatures to 230 F, conditions for equilibrium moisture contents of 6 percent and 12 percent, and prolonged heating were investigated.
Prolonged heating and choice of conditions for 6 percent or 12 percent equilibrium moisture content...
Using a simple dry transfer process, I construct and characterize three nanoscale MoS2 devices using current-voltage curves, Raman spectroscopy, optical and atomic force microscopy. I compare these devices, the thinnest of which was few layer ( ≤ 10 nm) MoS₂ capable of showing photoconductance, with a current whose magnitude is...
This research examines the literary and philosophical dimensions of the African American Harlem Renaissance, beginning with the historical milieu of the early twentieth century. A social movement that became known as Uplift and the so-called Cabaret Movement emerged as important, competing literary and social ideologies within the Renaissance. W.E.B. Du...
Reoxidation and mobilization of previously reduced and immobilized uranium by dissolved-phase oxidants poses a significant challenge for remediating uranium-contaminated groundwater. Preferential oxidation of reduced sulfur-bearing species, as opposed to reduced uranium-bearing species, has been demonstrated to limit the mobility of uranium at the laboratory scale yet field-scale investigations are lacking....
Evidence-based interventions (EBIs), which demonstrate efficacy in research settings, are rarely sustained when implemented in public health organizations. Rather, EBIs are often de-adopted - potentially undermining the positive benefits of the EBIs for the communities that access them. The lack of sustainability is particularly troubling among public health organizations that...
Research and public concern of poly and perfluoroalkyl substances (PFASs) as environmental contaminants has increased significantly due to the increasing number of reports of their detection in humans and wildlife. PFASs have a number of commercial applications including surfactants, coatings, polymers, and levelers, which are used on consumer products like...
Silicon integrated circuit (IC) technology has enabled numerous electrical and optical sensors used in biological and chemical assays, where they can increase performance while decreasing cost and size compared to traditional detectors. There is significant potential to further leverage IC technology for lab-on-chip applications, creating affordable and portable medical diagnostic...
A novel, low-cost instrument capable of measuring surface water PCO₂ was designed for use in dynamic, shallow-water environments. The instrument was tested in the Yaquina River Estuary, a macrotidal estuary known to experience a wide range of conditions ranging from dominance by the coastal ocean during summer upwelling to substantial...
The purpose of this report is to briefly examine some of the laws
and regulatory programs which affect development in Oregon's estuaries
and their adjacent wetlands. Development, in this sense, includes
dredging, filling, bank stabilization, structures or other physical
alterations to an estuary.
Human activities may contribute to the eutrophication of surface waters by
providing nutrients to aquatic ecosystems. Phosphorus is frequently identified as a
nutrient that is limiting to most aquatic ecosystems under natural conditions. Sources of
phosphorus contributing to eutrophic conditions often include nonpoint sources that are
dispersed across the landscape....
Temperate coniferous forests, such as those that cover vast areas of the western US and Canada, have evolved to depend on cycles of disturbance for succession of species and overall ecosystem maintenance. Many of these forest systems are managed, often for timber production, where disturbances are of anthropogenic origin and...
This analysis is the study of Oregon's wildlife resources from
the period prior to white settlement up to the present time, including
critical projections, based on present trends and expected conditions
for both human and wildlife populations in the state up to the year 2010.
Prior to white settlement Oregon...
This research project compared teacher attitude using
the Pupil Control Ideology Form with student attitude using
the Arlin-Hills Student Attitude Survey. P.C.I. Forms
were collected from 834 teachers from 95 elementary Christian
schools in several states. A total of 1074 student
attitude surveys were collected from Christian school students
in...
Purpose of the Study
The education of culturally diverse children has been one of the
focuses of education since the early 1960's. One of the factors
influencing education's inability to deal with the needs of culturally
diverse children is the lack of teacher's foundational knowledge of
language and linguistics as...
Interpretive rangers serve as one of the major educational resources that visitors may encounter during their visit to a park or other natural area, yet our understanding of their professional growth remains limited. This study helps address this issue by developing an instrument that evaluates the beliefs of resource interpreters...
Noise induced hearing loss is a subject of growing
concern. Over the past 15 years, several well-documented
studies have been completed which express the relationships
between industrial noise exposure and damage to normal and
pathological ears. This research has provided knowledge of
considerable importance to developing successful hearing
conservation programs....
Temperature and water potential effects on the growth,
transpiration, total nonstructural carbohydrate (TNC) content, and
nutrient uptake of sudangrass (Sorghum vulgare var. piper) were
investigated in laboratory experiments. The effect of nitrogen supply
on the growth and nutrient uptake at constant soil water potential was
also investigated in this study....
Myxozoans are an enigmatic group of obligately parasitic, microscopic cnidarians. They diverged from their free-living relatives over 600 million years ago and have highly reduced genomes. However, they have retained nematocyst stinging cells which characterize the phylum Cnidaria. Free-living cnidarians utilize this cellular weaponry for defense and predation whereas the...
In this thesis I explore the ways in which twenty-first century Americans have access
to Geoffrey Chaucer and his works. I look at issues surrounding Chaucer within the
canon debate, high school history and literature textbooks, and Chaucer in popular
culture, such as in movies like A Knight's Tale. I...
One of many important physical properties that must be known
to understand transport phenomena in soils is pore size distribution.
Presently the pore size distributions of soils are most commonly
obtained from soil water characteristic curves. The soil water characteristic
curves are usually obtained by the pressure plate technique.
It...
Published March 1990. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Rapid and sensitive detection of stress hormones, such as cortisol and dehydroepiandrosterone (DHEA), can benefit the diagnosis of diseases related to adrenal gland disorders, post-traumatic stress disorders, chronic fatigue syndrome, and more. Stress hormones fluctuate in a circadian rhythm, the highest in the early morning and the lowest at night;...
Polygalacturonase produced by Fusarium oxysporum f. sp.
lycopersici was purified by chromatography on DEAE cellulose, CM
cellulose, and hydroxylapatite. Removal of large amounts of carbohydrate
by chromatography on hydroxylapatite did not affect heat
stability of the enzyme. A large proportion of the remaining carbohydrate
appeared to be covalently linked to...
This purpose of this qualitative study was to explore the role of the community
college chief academic officer and to describe how CAOs define successful
performance. It examined (a) experience candidates brought to the position; (b) job
duties and responsibilities; (c) knowledge, skills, and abilities required; (d) challenges
and barriers;...
Third Culture Kids (TCKs) are a rapidly emerging student population within colleges and universities. TCKs must balance the myriad of experiences of growing up among worlds with the amplified implications that it entails as college students (Van Reken & Pollock, 2010). This study attempts to fill the gap between the...
This qualitative thesis explored the experiences of self-identified Master-level graduate students who worked four or more years in higher education before enrolling into a student affairs graduate program. The researcher utilized a sample of six semi-structured student interviews along with a review of relevant literature. The data analysis yielded five...
This interpretive, descriptive qualitative study explores how graduate students in a student affairs preparation program make meaning of their role in supporting student spiritual development. Six one-on-one semi-structured interviews with six graduate students were conducted in this single-site study. Five prevalent themes emerged from the data, each playing a role...
:
________________________________________________________________________
LarryD. Roper
This interpretive, descriptive qualitative study explores how graduate
Research of an outreach to industry alumni to identify weak points in our graduates competencies and attempting to close those gaps through various recommending various resources for the administration to offer.
Mentoring can have a great impact on students during their higher education career. This influential role of mentors can be found valuable for a wide variety of populations, and has specifically monumental influences for underrepresented students. The NASPA Undergraduate Fellows Program (NUFP) aims to facilitate the mentor-mentee relationship for historically...
The value of the student experience beyond just the academic classroom setting has been well established by a number of scholars in the higher education field. In more recent years the literature has intentionally expanded beyond the “typical” student demographics in order to examine the unique aspects, challenges, and needs...
This thesis is a report of a phenomenological-informed study of public university student spiritual development. The research was based primarily upon semi-structured personal interviews and a focus group with undergraduate students at a large, public research institution on the west coast. Since the introduction of scientific objectivity into the academy...
The purpose of this study was to investigate the perspectives of education professionals who manage, coordinate, and instruct in the English Literacy and Civics Education Grant
(EL/Civics) Programs in Oregon community colleges. The study compared the EL/Civics Grant Program to the conventional English as Second Language (ESL) programs offered at...
:
_______________________________________________________________________
LarryD. Roper
The purpose of this study was to investigate the perspectives of education
While it can be said that peer mentor-mentee relationships in college can lead to meaningful connections and interpersonal support, there is a lack of literature about how exactly mentor-relationship connections are made. This study examines the relationship building strategies that peer mentors used to connect with their mentees in the...
College campuses are becoming more diverse now than ever before. Campuses, however, are not as prepared as they should be for the new students that are arriving. Changes need to be made to status quo processes and procedures, event planning, and classroom education in order to best serve current students....
Community colleges are experiencing a decline in state allocated funding. Traditionally, college administrators look for ways to cut expenditures and raise tuition and fees to make up for the shortfall. Using available land resources to generate a revenue stream may provide revenue for community colleges.
The purpose of this study...
This study investigated three questions: how, what kind of, and why were cross-border partnerships with non-US educational institutions developed at two public four-year US universities; how, what kind of, and why will cross-border partnerships with non-US educational institutions develop and/or change at US universities if nationalistic geo-political trends reflective of...
The purpose of this case study is to explore a mentoring program designed for African American male community college students at a Pacific Northwest community college. Community college practitioners can use the knowledge gained from this study as a best practice to increase the persistence and success of African American...
The purpose of this qualitative study was to learn about the perceptions and
experiences of students who graduated with the Associates of Arts/Oregon Transfer
(AA/OT) degree. This study answered the following questions:
1) How did the AA/OT degree attainment assist in the overall achievement
of goals?
2) How did AA/OT...
International students are a growing population at many institutions of higher education in the United States, and they face unique challenges in navigating both higher education and the United States as a whole. Though there is significant research about international students, few studies have examined how international students perceive student...
This phenomenological study explores what it means to teach part-time in community colleges in the United States. The increasing use of part-time faculty in community colleges and the concomitant emergence of a two-tiered faculty are discussed.
The study examines the nature of part-time work in the United States, thus providing...
This thesis analyzes the relationship between whiteness, womanhood, and the profession of student affairs using the method of autoethnography and the guiding question: How does my personal understanding of white womanhood affect my work and role as a student affairs practitioner? The researcher identifies three goals at the beginning of...
Second-year students are a population that is often overlooked by higher education institutions. Many programs are offered to foster the success of students, but there is little research on their influence on second-year students. Mentorship initiatives are well researched and utilized support programs for students, but relatively little research has...
This study describes the historical development of the Associate Degree Nursing Program at Portland Community College by women faculty leaders in a male-dominated organization. In-depth interviews of eleven participants were transcribed and analyzed. The participants gave a very rich description of this nursing programthus describing its culture. Six themes were...
Background: African American males' experience in higher education is often categorized with negative terminology that does not reflect notions of success. Most research addressing the success of African American males in higher education illuminates factors that impede access to success and is often situated in university settings. Very little research...
The purpose of this study is to critically explore low-income women's experience as they negotiate post secondary education in community colleges. Three research questions explore the context through which low-income women have entered the college experience, what that experience is like for them, and how the community college experience has...
The purpose of this study is to explore through their own stories and journeys (storjourns), how lesbian leaders influence and transform dominant community college culture. Five lesbian leaders participated who held the position of Director, Associate Dean, Dean, Executive Vice President, and President/Executive Dean. This microethnographical inquiry divulges and makes...
The purpose of the study was to provide a method for evaluating the effect, impact or role that (as perceived by automotive, diesel, automotive collision faculty and administrators) the nationally recognized industry training standards developed by Automotive Service Excellence (ASE) and National Automotive Technicians Education Foundation (NATEF) have on the...
Faculty-led short-term programs are the most popular type of study abroad experience for undergraduate students in the United States. The rise of the FLST model has created new challenges for institutions and faculty. This study undertakes a critical analysis of the practice of faculty-led short-term (FLST) study abroad at U.S....
This study was purposed to extract, collate, and statistically format data contained in the national Beginning Postsecondary Students (BPS) Longitudinal Study: 1996-2001database that pertained to persistence and attainment rates of GED recipients who began their postsecondary education at a community college during the 1995-96 academic year. The
primary objective was...
The Utah System of Higher Education (USHE) and the eight public colleges and universities in the system, have depended on the Federal Pell Grant program for more than 40 years to assist students to attend. For some of these institutions, the amount of Pell grant dollars received is as much...
The purpose of this qualitative study was to describe and communicate a student-constructed model of student services for electronic distance education (EDE). This study seeks to answer the following questions: Do students enrolled in EDE perceive a need for student services? If not, why not? Which services do students want/need?...
Black male student-athletes in revenue-producing sports encounter multiple stressors at predominantly White institutions (PWI). These stressors can include identity conflicts, role confusion, feelings of exploitation as revenue producers, academic imposter syndrome, heavy workloads, and racial microaggressions. This study explores how Black male student-athletes in revenue-producing sports define their roles within...
The purpose of this study is to name and give voice to the spiritual expression of leadership by women community college presidents. The following questions guided the research: (1) How do women community college presidents describe spirituality? (2) How does spirituality convey itself in the reflections, self-expression, and practice of...
This qualitative study explores the experiences of women who are welfare
recipients attending a community college under the auspices of a new program,
Washington State's WorkFirst/Work Study program. The study, conducted over
two academic quarters, includes in-depth interviews with WorkFirst/Work Study
students, observations in a weekly seminar, and interviews with...
Different racial/ethnic groups often perceive the realities of the campus environment differently: This difference in perspective and the attendant reactions can be a factor in student satisfaction or dissatisfaction. A quantitative survey administered in 1996 and 1999 revealed that African-American students on the campus of a diverse two-year community college...
Diversity development has achieved higher agenda prominence based on the culmination of historical developments in problem recognition, political events, and university policies that have generated a window of opportunity. Oregon State University is currently at a critical time that will significantly transform the university's commitment inclusiveness and a diverse campus...
Several investigators have recently called attention to the
fact that the flux equation for water movement in unsaturated soils
may not be an appropriate mathematical model for the development
of the theory of unsaturated flow phenomena.
An analytical theory is developed for the purpose of testing
the validity of the...
Experiments were conducted to study the effect of pore size
distribution on the diffusion of 2, 4-Dichlorophenoxyacetic acid (carbon-
14) through water saturated porous media. Eight size fractions of
glass beads were used representing the porous media. It was found
that as the average particle radius, and hence pore radius,...
In regions where soil temperatures limit plant growth, artificial
soil warming may be an economically feasible practice. This hypothesis
was evaluated in a soil warming experiment near Corvallis, Oregon.
This experiment was prompted by the observation that multiple
use of waste heat discharged in the condenser cooling water of thermal...
The structure and composition of mixed-conifer forest (MCF) in central Oregon has been altered by fire exclusion and logging. The resulting increased density, spatial contagion, and loss of fire resistant trees decrease the resiliency of this ecosystem to fire, drought, and insects. The historical and current composition and structure of...
Nursery and greenhouse products are economically important agricultural commodities for Oregon and Washington. Nursery crops including tree seedlings can be damaged or killed by soilborne plant pathogens, which can be challenging to manage because of their persistence in soil and limited options for control. Soil solarization is a pre-planting soil...
In 2013, a large upper-ocean thermal anomaly formed in the Gulf of Alaska (GOA) with sea surface temperatures (SSTs) warmer than 4 degrees Celsius above the climatological norm. This warm anomaly persisted for the next three years and has been linked to downstream effects on North American climate and negative...
Shallow-water habitats (< 0.5 m depth) of the upper littoral zone of John Day Pool of the Columbia River were heavily used by young fishes in comparison with lower littoral and limnetic waters. Through the season, 96.9% of the 64,700 larvae and juveniles collected (corrected for effort) were from upper...
This study explored how students navigate the technological landscape of a public, land-grant institution. Through online surveys and semi-structured, one-on-one interviews, the study operated through an anticipatory/participatory lens to research with the intent of understanding students' experiences with technology at a research institution. Using this methodology and Triandis and Triandis'...
:
_____________________________________________________________________
LarryD. Roper
This study explored how students navigate the technological landscape of a
This case study of leadership in crisis at Meadow View
Community College (fictitious name) was undertaken to add to
the practical and theoretical knowledge and understanding of
presidential leadership issues that actually occur in
American community colleges. The college under study
one of nearly one-third of the community colleges in...
Over the past twenty years, the national three-year graduation rate for community college students has ranged from 44% to roughly 31% in 2013 (NCES, 2013). As a way to address such low graduation rates, colleges have implemented a myriad of services and programs (i.e., tutoring, mentoring, etc.). Another intervention is...
Community colleges today are experiencing monumental shifts in their operating
environments. Some of these changes are known, but many of them are not. They
include shifts in curriculum, funding, and societal expectation to name a few. Through
the constructs of high quality work environment and organizational fluidity theory, this
research...
The anadromous Pacific Lamprey (Entosphenus tridentatus) is a biologically and culturally important species native to the North Pacific Ocean and its adjacent freshwater tributaries. Pacific Lamprey have experienced declines in abundance and distribution throughout their native range, highlighting a need for further research on the species to better inform conservation...
The purpose of this study was to determine if there were common
factors influencing student decisions to terminate course work at the
College of San Mateo, San Mateo, California.
The following six null hypotheses were tested:
1. There will be no significant difference in responses
among those enrolled in transfer...
Published November 1976. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
A method of calculating surface evapotranspiration by separately
including the effects of vegetation and atmospheric evaporative demand
under the condition of nonlimiting soil moisture is presented. A
literature survey is conducted to determine the effects of plants on
evapotranspiration.
To represent the atmospheric evaporative demand, the original
potential evaporation equation...
Coastal Temperate Rainforests of western North America are carbon dense ecological regions of great importance due to their high biological productivity and climatic conditions leading to the natural accumulation of soil organic carbon (SOC). Yet, the distribution of SOC remains understudied in the CTR environments, particularly in upland mineral soils,...
The relationship between carbon burial and sedimentation in reservoirs is unknown, exposing gaps in our fundamental understanding of the transport, processing, and deposition of sediment and organic matter in fluvial and lacustrine systems and contributing to uncertainty in our understanding of the net impact of dams to the global carbon...
Somatic growth variation manifests from the cumulative effects of a suite of biological, ecological, and environmental processes and can have profound effects on individual fitness and species population dynamics. As ectotherms whose growth dynamics are greatly influenced by environmental factors, sea turtles display considerable variation in somatic growth within and...
Warm, high pressure systems are measured from a weather station on a high elevation peak in the Oregon Coast range during the winter months. Temperature observations on Mary’s Peak show abnormally warm air in relation to the surrounding areas. The goal of this study was to characterize the frequency and...
The purpose of this study was to determine the importance and
the frequency of use of certain communication skills to job-entrylevel
mechanics as assessed by employers, educators at various levels,
and entry-level industrial mechanics. The study was conducted in
Lane County, Oregon. Communication skills investigated for importance
and for frequency...
Gaseous diffusion equations which describe the diffusion of
oxygen and carbon dioxide through soil have been studied by several
investigators. However, these efforts seldom considered gaseous
diffusion through soil together with the effects of soil environmental
factors such as soil temperature and soil water content on sink or
source strength....
The purpose of this study was to determine the concerns of past participants of the Summer Agriculture Institute regarding the use of agriculture as a context for teaching and to determine how they implement curriculum integration. The study used the Concerns-Based Adoption Model as a theoretical framework, which resulted in...
The stability of steady-state solutions of the equations governing two-dimensional,
homogeneous, incompressible fluid flow are analyzed in the context
of shear-flow in a channel. Both the linear and nonlinear theories are
reviewed and compared. In proving nonlinear stability of an equilibrium,
emphasis is placed on using the stability algorithm developed...
Several horizontal flight segments from SESAME and
ALPEX are studied using structure functions and specral
analysis methods. Theoretical analysis of the relative
errors in structure function and correlation function in
the presence of large scale wave activity is presented. The
effect of stratification and shear on the -5/3 inertial
subrange...
The continuum theory provides a framework in which the growth
of a plant root as a dynamic process involving interactions among
transport of water and solute, cell division, and the subsequent cell
elongation can be described. A plant root is modeled as a one-dimensional,
multi-phase, mathematical continuum. The network of...
Gaseous transport through soil in the presence of soil
microorganisms has been investigated. More recently, modeling of
gaseous transport in the unsaturated zone has been investigated.
However, the problem of mathematical model of oxygen and carbon
dioxide transport through soil, as affected by the climatic
conditions, the transport of soil...
The effect of a static quadrupole interaction on the 133-482 Kev
gamma-gamma angular correlation in Ta-181 has been studied by the
delayed coincidence method. Using a source of Hf-181 in polycrystalline
hafnium metal, the anisotropy was measured as a function of
time between the formation and decay of the 482...
Freeze/thaw cycles are numerous in agricultural soils of the Pacific Northwest. Potential loss of soil by erosion is high whenever a soil thaws from the surface creating a saturated soil overlying an impermeable frozen layer. Field studies were conducted to investigate the effect of surface residue on soil freezing. Residue...
Atmospheric boundary layers become stably stratified at night over land when the surface becomes colder than the air layer above. In stable nocturnal boundary layers (SNBL), turbulence becomes weak and intermittent, terrain-induced phenomena such as drainage currents or gravity-waves emerge and the surface heterogeneity is enhanced. Because of their complexity...