A rootstock trial was established in 1997 at the OSU Woodhall vineyard, located in the Southern Willamette Valley, which included two experiments. The first experiment was a factorial of four varieties grafted on to 9 rootstocks, and also as ungrafted vines (a split-plot design). The second experiment was a randomized...
In the last decade, the California Current Large Marine Ecosystem has experienced a trend of increased severity of upwelling-driven coastal hypoxia. This thesis strove to examine the potential upper trophic level impacts of moderate and severe hypoxia in the CCLME. Initially I conducted a literature review of Pacific harbor seal...
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Markus Horning
In the last decade, the California Current Large Marine Ecosystem (CCLME
Soils have a critical role in global carbon (C) cycling, containing one of the largest fast-cycling carbon stocks on earth. Robust representation of soil organic matter dynamics in Earth System Models is critical for future climate prediction. Current C cycling models assume that all C cycling in non-hydric (i.e. ‘upland’)...
Intimate associations with reactive metal species permanently protect soil organic matter (SOM) from microbial access and oxidation, contributing to the build-up of organic carbon (C) stocks in soils. It is increasingly recognized, however, that such associations can be reversible and that reactive metal species might even facilitate the oxidation of...
Recent works have investigated use of the hydrogen isotopic composition of C₃₇ alkenones (δD[subscript K37s]), lipid biomarkers of certain haptophyte microalgae, as an independent paleosalinity proxy. I discuss herein the factors impeding such an application and identify the potential alternative use of δD[subscript K37s] measurements as a proxy for non-thermal,...
Soil nitrogen exists largely as organic matter, including plant liter, dead animal matter, and microbial necromass. About 90% of soil organic nitrogen is proteinaceous material that is too large for plants and microorganisms to assimilate directly. Protein depolymerization therefore plays a critical role in mobilizing this organic source of nitrogen,...
Soil surveys provide essential information for making land use and management decisions on publicly-owned lands in the semi-arid Great Basin. Soil maps produced with conventional mapping techniques are time-consuming, costly, and do not explicitly document the soil scientist's mental soil-landscape model. Predictive soils mapping using decision tree analysis (DTA) can...
Adolescence is a developmental stage marked by crystallization in individuals’ sense of identity (Erikson, 1994; Harter, 1999). Research on positive youth development stresses the ways in which thriving trajectories during adolescence contribute to positive lifelong outcomes (Lerner & Overton, 2008; Scales, Benson, & Roehlkepartain, 2011) A symbolic interactionism perspective (Mead,...
Grounded in life span theory, this study explored how personal goals (as measured by possible selves) related to depressive symptoms in older adults. Possible selves represent individuals' ideas of what they would like to become (hoped-for selves) and what they are afraid of becoming (feared selves). Possible selves are also...
As the 2009 growing season comes to a close, we prepared this newsletter to provide information on several viticulture and enology issues important to the Oregon winegrape industry. We begin with the most immediate topic of this season – wine production with Dr. James Osborne and importance of wine superstars...
Contemporary parenting strategies tend to involve
parent-child interactions in which the parent neither
repressively dominates the child nor follows a permissive
laissez-faire course but respects the child's dignity as a
person. This paper integrates several current theories of
parenting and parent education into the construct of
"respectful parenting," which is...
Invasive plants have the capacity to transform landscapes and alter ecosystem function, causing significant economic and ecological damage. These effects include displacement and reduction of native flora and fauna, altered fire regimes, modification of biotic and abiotic soil properties, as well as local, regional, and global economic impacts. With such...
Background: Prenatal care (PNC) is an important preventive health service that can influence the health of the four million women who give birth annually in the United States, and the health their infants. Despite efforts to increase women’s access to PNC services, significant disparities in PNC utilization and maternal/child health...
The fact that measuring a quantum system reduces it to apparently classical behavior, eliminating the interference patterns that are a hallmark of quantumness, cries out for an explanation. That explanation has been provided by the recognition of decoherence,whereby the interference is destroyed by the very interaction that acquires information.We begin...
The preceding empirical research examines the traditional and evolutionary research surrounding youth deviance. Deviance is routinely discussed as an adverse impact in a plethora of theories and it is imperative to further develop the knowledge of deviance as society progresses. In this report, the utilized sample group approximately (n=13583) was...
On social media platforms and on blog sites, disordered behavior as a lifestyle choice is a growing trend that supports and promotes behaviors related to self-harm and anorexia. Web content advocating self-harm and anorexia can be found easily through search engines or can be concealed in the social media sphere...
The South Pole ice core (SPC14), drilled in the field seasons of 2014/2015 and 2015/2016, is an intermediate length, 1,751-m ice core which preserves a 54,000-year record of past climate and atmospheric composition. The SPC14 ice core adds to the spatial grid of ice cores in Antarctica extending into the...
Colloids, particles smaller than ten microns in diameter, are ubiquitous in the subsurface. Colloids have an effect on the transport of contaminants that bind to their surfaces, and can reduce the permeability of aquifer materials through deposition. Some microorganisms, including pathogens, are also transported in the subsurface as colloids. The...
Resilient water, food, and energy management strategies for an ever-growing population and changing environment depends on our understanding of water and carbon cycles from local to global scales. Fluxes of water and carbon are coupled by photosynthesis and plant transpiration cycles the largest fraction of terrestrial water from the land...
Rural students have lagged behind non-rural students in matriculation into higher education, as well as in completion of four-year degrees. The current studies sought to investigate academic readiness, academic performance, and psychological differences between rural and non-rural students at Oregon State University. Rural and non-rural students were compared during spring...
The wetting of a surface by a liquid is a crucial part of many natural and industrial processes. Despite numerous existing studies, some elements of wetting-dewetting such as contact angle variation are still poorly understood. Knowledge of contact angle behavior during the flow is necessary for modeling fluid displacements in...
The study of motivation in second language acquisition has been a matter of interest for many years. The research objective of this project was to conduct a study that would determine the motivation level of students of Spanish 113 during Spring term 2016 at Oregon State University, and how their...
This dissertation serves a threefold purpose: 1. identify the principles, practices and assumptions implicated in an academic theory of social justice; 2. continue moving towards articulating a theory of social justice judgment and decision making; and 3. develop a model of social justice judgment and decision making that will assist...
This report describes results of baseline monitoring at the Ni-les’tun tidal wetland restoration site, Bandon National Wildlife Refuge, Coquille River estuary of Oregon. Baseline monitoring provides a basis for comparison to post-restoration conditions, allowing future determination of project effectiveness. The report focuses on 2010-2011 baseline data, but it also includes...
Anomaly detection is the task of identifying observations (points) that differ from the majority of other points, which requires some measure of difference, or distance. Many anomaly detection methods rely on “implicit distance” measures: rather than directly calculating an explicitly defined distance, these approaches quantify a point’s “abnormality” by examining...
Cancer cell migration in three-dimensional extracellular matrix is a major cause of death for cancer patients. Although extensive studies have elucidated detailed mechanism of single cell 3D invasion and cell-ECM interaction, 3D collective cancer invasion is still poorly understood. 3D collective migration models have unveiled unexpected degrees of diversity and...
A method of measuring interstitial fluid mixing rates for
evaluation of exchange between pore water of estuarine benthic sediments
and the overlying water in a bay is presented. Pore water
movement is monitored by reducing conductivity of the interstitial
fluid within a zone of the benthic sediment to a depth...
The first reported observation of hemoglobin association
with a plasma protein was made by Polonovski and
Jayle in 1938. Since that time, countless investigators
have contributed to the characterization of the hemoglobin-
binding plasma protein, haptoglobin. Haptoglobins
have been found in many mammals, including humans and in
various birds. However,...
Research on natural environments, over the last decade, is replete with microbial diversity studies that used culture-independent approaches. The cloning and sequencing of the 16S rRNA genes has been the driving force in the expansion of awareness about the great diversity of previously undiscovered microorganisms. Well-known uncultured groups of microorganisms...
Building software systems that adapt to the changing environment is challenging. Developers cannot anticipate all the changes in advance, and even if they could, the effort required to handle such situations is too onerous for practical purposes. Self Adaptive Software (SAS) adapts itself as per changing environment. The area of...
This thesis consists of two major components. The first part is concerned with video object instance segmentation (VOS), which is the task of assigning per-pixel labels perframe of a video sequence to indicate foreground object instance membership, given the first frame ground truth mask. VOS has myriad applications, from video...
Oceanic crust covers nearly 70% of the Earth's surface, of which, the upper,
sediment layer is estimated to harbor substantial microbial biomass. Marine crust;
however, extends several kilometers beyond this surficial layer, and includes the
basalt and gabbro layers. In particular, the basalt layer has high permeabilities which
allows for...
This thesis contains three parts addressing the asymptotic analysis of fluid flow through fully saturated porous medium in the presence of an adjacent thin channel.
In the first part the problem is modeled by Darcy's law in both the porous medium and in the channel. The permeability in the channel...
Medical professionals experience higher rates of burnout than other professions due to the highly stressful nature of their environment. In 2018, 94 percent of physicians reported experiencing burnout – characterized by emotional fatigue, and feelings of depersonalization and low personal accomplishment – at some point in their careers. As emotional...
Fungi from the genus Chlorociboria are known for their production of the blue-green quinonic pigment xylindein. Extracted xylindein has been the subject of investigations ranging from fabric dying to use a coloring agent in paint, and shows potential as an organic semiconductor in organic photovoltaics (OPVs) and other technologies. However,...
Meadowfoam (Limnanthes alba Hartw. ex Benth) seed meal (MSM), a by-product of meadowfoam oil extraction, has a plant defensive compound known as glucosinolate glucolimnanthin (GLN). Myrosinase enzymes present in soil microbes and meadowfoam seeds can convert GLN to glucosinolate breakdown products (GBPs), which demonstrate herbicidal activity and have the potential...
Marine sediments are vast sources and reservoirs of methane, a potent greenhouse gas. Most of this methane is anaerobically oxidized by archaea before it can reach the overlying ocean, though the efficiency of this process often depends on methane fluxes and mechanisms of fluid transport. Anaerobic methanotrophic archaea, or ANME,...
Although teams are a common method of structuring work activities,
there is still much concern over their effectiveness. The primary purpose
of this study was to describe the current state of teamwork training in
Oregon and to identify critical training design activities, situational barriers
and demographic variables related to the...
DNA is often described as the “blueprint for life”. In eukaryotes this information is contained within linear chromosomes of varying size and number. During cell division, the chromosomes must be faithfully segregated into each daughter cell to avoid disease and sustain life. This process is carried out by the kinetochore...
Cell signaling under external stimulation is a critical mechanism that governs many biological processes such as cell proliferation, cell migration, and cell apoptosis, etc. For multicellular organisms, the ability to synchronize heterogeneous individual cellular responses through intercellular communication is crucial to maintain normal functionality. However, even though the biological pathways...
Secure multi-party computation (MPC) is a conceptual framework in cryptography. It allows distrusting parties engage in a protocol to perform a computational task while still maintain some secure properties. Most existing approaches are required to interpret functions as a boolean circuit. With the recent state-of-art circuit garbling scheme, the performance...
The Communication Decency Act became law in 1996 and was
immediately challenged on Constitutional grounds. It was subsequently declared
unconstitutional based on the First Amendment guarantee of free speech. Using
Fantasy Theme Analysis, an analysis of the dramatic elements of the key players
was accomplished. The dramatic elements of Overall...
Alcohol is a widely consumed, nonessential, bioactive nutrient with end-organ effects on the skeleton. Moderate levels of alcohol consumption are generally associated with increased bone mineral density (BMD), whereas higher intake levels result in reduced bone formation, bone loss, and increased risk for osteoporotic fracture. Given the negative impact of...