The potassium salts of certain 1-vinylcycloalk-3-en-l-ols have
been found to undergo sigmatropic ring expansion rearrangements in
HMPA. Preliminary investigations of several benzo-substituted medium
ring systems were undertaken in order to determine which of these
was best suited for further study. A synthetic sequence leading to
the formation of 5-methy1-6-viny1-7,8,9,10-tetrahydro-6-benzocyclo-octenol,
which...
Three areas of liquid state theory are considered.
First, Monte Carlo computer simulation of a two-dimensional hard
disk fluid with an imbedded ellipse was undertaken to determine how a
non-spherical molecule affects intermolecular ordering. The
elliptical molecule (with axial ratios of 2, 5 and 10) altered the
isotropic distribution of...
Presented here is a case study of the problem-solving behaviors of upper-division undergraduate physics majors. This study explores the role of visual representations in students' problem solving and provides a foundation for investigating how students' use of visualization changes in the upper-division physics major. Three independent studies were conducted on...
A combination of theoretical perspectives is used to create a rich description of student reasoning when facing a highly-geometric electricity and magnetism problem in an upper-division active-engagement physics classroom at Oregon State University. Geometric reasoning as students encounter problem situations ranging from familiar to novel is described using van Zee...
Mathematical sophistication increases rapidly as students transition from lower- to upper-division physics courses. Complex algebra is one of the mathematical tools that is not introduced or used in lower-division physics courses but is pervasive throughout upper-division courses. In this dissertation, I study middle-division physics students' developing fluency with complex number...
Human security is a framework related to the stability and sustainability of political, environmental, economical, and socio-cultural areas of concern. Water resources around the world are under increased pressure from increased development, growing populations, pollution, and global climate change. Large-scale dam development while still popular for political and economic development...
Expansion of Juniperus occidentalis into the sagebrush steppe has resulted in significant changes in understory composition. A consequence of increased J. occidentalis dominance may be a depletion of the seed bank. The potential for depletion is problematic because a reduction in the amount of species available from the seed bank...
Representations of SO(4,2;R) are constructed using 4 x 4 and 2 x 2 matrices with elements in H' ⊗ C . Using 2 x 2 matrix representations of C and H', the 4 x 4 representation is interpreted in terms of 16 x 16 real matrices. Finally, the known isomorphism...
Surface transports into the California Current are calculated from TOPEX/POSEIDON altimeter surface height slopes during the 9.5 year period from October 1992–May 2002. These quantify the anomalous onshore and southward displacements of the water column during the 2000–2002 period, which had been hypothesized by others based on anomalous water properties...
Satellite data from the Geosat altimeter and the Advanced Very High Resolution Radiometer (AVHRR) are used to show the large-scale structure of the surface circulation of the California Current System in summer. These data show the connection between an equatorward jet and temperature front off Oregon that lies within 100...
We examine large-scale atmospheric behavior around the time of the spring and fall transitions in the coastal ocean off the west coast of North America. Records of adjusted sea level (ASL), coastal wind stress, sea level atmospheric pressure (SLP), and 500-mbar heights for the years 1971-1975 and 1980-1983 are analyzed....
Data from Geosat and TOPEX altimeters are used to infer the structure of the Peru-Chile Countercurrent, a jet that flows from at least as far north as 10ºS (historical data suggests 7ºS) to 35º–40ºS, maintaining its position between approximately 100–300 km offshore. Although the annual mean current cannot be determined...
Concurrent satellite-measured chlorophyll (CHL), sea surface temperature (SST), sea level anomaly (SLA) and model-derived wind vectors from the 13+ year SeaWiFS period September 1997 – December 2010 quantify time and space patterns of phytoplankton variability and its links to physical forcing in the Pacific Ocean. The CHL fields are a...
Satellite-derived pigment concentrations from the west coast time series (WCTS) are averaged into monthly mean fields over the California Current system (CCS) for the period July 1979 to June 1986. Errors caused by the scattering algorithm used in the WCTS are reduced by an empirical correction function, although winter values...
The National Assessment of Educational Progress (NAEP) has measured the condition and progress of education since 1969 to provide information on performance of American students in core subjects to policymakers, educators, and the public. Yet, there has been a perception that theses federal resources are under utilized. An analysis of...
Altimeter sea surface height (SSH) fields are analyzed to define and discuss the seasonal circulation
over the wide continental shelf in the SW Atlantic Ocean (27°–43°S) during 2001–2012. Seasonal variability
is low south of the Rio de la Plata (RdlP), where winds and currents remain equatorward for most of
the...
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Altimeter-Derived Seasonal Circulation on the Southwest Atlantic Shelf: 27° – 43°S
P. Ted Strub1, Corinne
Altimeter sea surface height (SSH) fields are analyzed to define and discuss the seasonal circulation
over the wide continental shelf in the SW Atlantic Ocean (27°–43°S) during 2001–2012. Seasonal variability
is low south of the Rio de la Plata (RdlP), where winds and currents remain equatorward for most of
the...
Full Text:
:
27°–43°S
Strub, P. T., James, C., Combes, V., Matano, R. P., Piola, A. R., Palma, E. D., ...
& Ruiz
In this paper, we evaluate the temporal and horizontal resolution of geostrophic
surface velocities calculated from TOPEX satellite altimeter heights. Moored velocities
(from vector-averaging current meters and an acoustic Doppler current profiler) at depths
below the Ekman layer are used to estimate the temporal evolution and accuracy of
altimeter geostrophic...
Thermodynamic potentials are energies that can describe a thermodynamic system in terms of different mathematically independent variables. Some of these potentials describe particular thermodynamic systems or processes in particularly convenient ways. In this dissertation, I discuss the different ways that students and experts reason about quantities in thermodynamics within the...
Satellite-derived data provide the temporal means and seasonal and nonseasonal
variability of four physical and biological parameters off Oregon and Washington
(41°–48.5°N). Eight years of data (1998–2005) are available for surface chlorophyll
concentrations, sea surface temperature (SST), and sea surface height, while six years of
data (2000–2005) are available for...
Satellite-derived sea surface salinity (SSS) data from Aquarius and SMOS are used to study the
shelf-open ocean exchanges in the western South Atlantic near 35°S. Away from the tropics, these
exchanges cause the largest SSS variability throughout the South Atlantic. The data reveal a well-defined
seasonal pattern of SSS during...
Full Text:
. R., Fenco, H., Matano, R. P., Combes, V., Chao, Y.,
James, C., Palma, E. D., Saraceno, M., & Ted
Satellite-derived sea surface salinity (SSS) data from Aquarius and SMOS are used to study the
shelf-open ocean exchanges in the western South Atlantic near 35°S. Away from the tropics, these
exchanges cause the largest SSS variability throughout the South Atlantic. The data reveal a well-defined
seasonal pattern of SSS during...
Altimeter sea surface height (SSH) fields are analyzed to define and discuss the seasonal circulation over the wide continental shelf in the SW Atlantic Ocean (27°–43°S) during 2001–2012. Seasonal variability is low south of the Rio de la Plata (RdlP), where winds and currents remain equatorward for most of the...
Satellite‐derived sea surface salinity (SSS) data from Aquarius and SMOS are used to study the shelf‐open ocean exchanges in the western South Atlantic near 35°S. Away from the tropics, these exchanges cause the largest SSS variability throughout the South Atlantic. The data reveal a well‐defined seasonal pattern of SSS during...
To assist with risk-assessment with deepwater and ultra-deepwater prospects for offshore energy extraction as well as provide a useful tool for oil spill response, a spatially-explicit model was developed for comprehensive simulations of a blowout event from the wellhead to final fate and degradation. The Blowout and Spill Occurrence Model...
Exploration and production of oil in the Gulf of Mexico has seen an astonishing increase since the first well was drilled in 1936. Much of the current exploration is occurring in waters greater than 5000 feet. The largest and most unprecedented oil spill in the United States occurred on April...
A significant source of energy consumption comes from maintaining desired indoor environment conditions in warehouses and other industrial facilities. In efforts to combat the raising energy costs, studies into more efficient heating and cooling strategies has been a topic of consideration for a number of years. One of the areas...
Calcium alginate gels are widely used in the biotechnology, food, and pharmaceutical industries for cell immobilization, food additives, and controlling the release of therapeutic agents. Different gelation conditions can lead to different gel structures which affects the diffusion of solutes in gels, thus mathematical models were developed to describe diffusion...
Geologic carbon sequestration is being considered in target basalt and sandstone formations. The chemical
effects of CO2 exposure on the interface between Class H Portland cement paste and Grande Ronde
Columbia River basalt, or between cement paste and Mt. Simon sandstone, has been examined at a
microstructural level. This bonding...
In this dissertation I explore the Arms representation and activities for teaching quantum mechanics invented at Oregon State University. In the Arms representation students embody quantum states. The Arms activities are presented as an exemplar of the unique physics classroom culture of the upper-division Paradigms in Physics program. In the...
Compiled under the criteria: (1) statement of sources and faithfulness to them, (2) a true reflection of Indian cosmology, and (3) a written style that retains the spirit and poetry of the Indian's native manner of telling. Includes titles containing valuable introductory materials, bibliographies, motif indexes, and additional comparative notes,...
This compilation of theses and dissertations (a part of the OSU Bibliographic Series) for the period 1970-1977 reflects this university's emphasis on research and graduate study. It may be viewed as an indicator of the contributions made to the state of Oregon through graduate study and research at Oregon State...
The Lakes Basin Bibliography consists of over 600 references relating to the natural resources of Oregon’s Lakes Basin. Forty percent of the items listed are available to anyone online though not all links are persistent. The remaining sixty percent are held in at least one library either in print or...
Published June 2009. 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
Recent trends in librarianship point to themes of crafters, artisans, and makers in library spaces. The American Library Association's Center for the Future of Libraries includes the Maker Movement as one of its trends. Librarians can support these makers and entrepreneurs by thinking of libraries as a place to create...
Focus on Forestry is published by Oregon State University's College of Forestry. Our goal is to keep Forestry alumni, friends, faculty, staff, and students informed about the College of Forestry and its many activities and programs.
Generally presented as a preferred social norm based on both ethical considerations and legislative demands, gender equality has been highly encouraged in recent years. For instance, The United Nations Sustainable Development Goals for 2030 call out achieving gender equality and empowerment of women. However, although there are multiple efforts to...
Marine programs, particularly those related to marine conservation, utilize a suite of tools to offset the negative consequences of human activities on marine environments. However, among others, limited funding can represent a challenge for these programs in terms of achieving their desired outcomes. Using systems and organizational theory, this study...
Ecosystems are shaped by processes occurring and interacting over multiple
temporal and spatial scales. Theory suggests such complexity can be simplified by focusing on
processes sharing the same scale as the pattern of interest. This scale-dependent approach to
studying communities has been challenged by multiscale meta-ecosystem theory, which
recognizes that...
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right panel.
Images were provided by CorinneJames of the College of Oceanic and Atmospheric Sciences
Oregon's minimum stream flow program is intended to protect
certain instream flow values by maintaining sufficient stream
flows to support aquatic life and to minimize pollution. The
increasing demand for consumptive uses of water, as well as certain
deficiencies in the laws, policies, and administration of the program,
bring into...
The variety of natural disasters provide different sets of characteristics and properties with unique challenges. One significant difference between hazard types is prewarning lead time, the amount of time individuals have from a potential warning to the disaster occurring. Rapid onset disasters may not provide an official warning about a...
Emerging data showing the presence of atmospheric microplastics (MPs) has recently raised awareness surrounding the potential of human nanoplastics (NPs) exposure. Due to factors such as weathering, UV exposure, and other biodegradation processes, plastic pollution in the environment breaks down over time into micro (<5 micrometers) and nanoscale (<1000nm) particles....
Standard quantum mechanics makes foundational assumptions to describe the measurement process. Upon interaction with a “classical measurement apparatus”, a quantum system is subjected to postulated “state collapse” dynamics. We show that framing measurement around state collapse and ill-defined classical observers leads to interpretational issues, and artificially limits the scope of...
After Colonization and since the beginning of the globalization era, governments in developing countries have been restricted in implementing certain policies and reforms, often being forced to accept or borrow policies from former colonizers or other developed countries and non-governmental organizations (NGOs). Previous studies found that borrowing policy often leads...
We evaluate the impact of the Gambian hardship allowance, which provides a salary premium of 30‐40% to primary school teachers in remote locations, on the distribution and characteristics of teachers
across schools. A geographic discontinuity in the policy’s implementation and the presence of common
pre‐treatment trends between hardship and non‐hardship...
Two ocean general circulation models are used to test the ability of geostrophic velocity measurement systems to observe the meridional overturning circulation (MOC) and meridional heat transport (MHT) in the South Atlantic. Model sampling experiments are conducted at five latitudes (between 15° and 34.5°S) spanning the range of extratropical current...
Two methods of estimating surface velocity vectors from advanced very high resolution radiometer (AVHRR) data were applied to the same set of images and the results were compared with in situ and altimeter measurements. The first method used and automated feature –tracking algorithm and the second method used an inversion...
The rise of digital streaming has largely impacted the way the average listener consumes music. Consequentially, while the role of album art has evolved to meet the changes in music technology, it is hard to measure the effect of digital streaming on modern album art. This research seeks to determine...
This thesis is an IRB-exempt oral history focused on the non-profit Corvallis Multicultural Literacy Center (CMLC) in Corvallis, Oregon. The CMLC, formerly on 9th Street, was known to many community members as the Yellow House. The Yellow House was a dedicated community-based space where people of all cultures could come...
The purpose of the study was to investigate the relationships
among satisfaction with clothing, satisfaction with physical appearance,
concern over weight, self-esteem, and participation in leisure-time
activities among a sample of full-time homemakers.
To test these relationships, five measures were used. Satisfaction
with clothing was measured by comparing the actual...
The purpose of the study was to develop a proposed in-service program for cooperating teachers who supervise student teachers. Forty-one cooperating teachers for the Home Economics Education Department of Oregon State University rated the competencies of a good supervisor of student teachers. Also, 17 heads of home economics teacher education...
Over the last two centuries, Pilsner beer has become a symbol of Czech national identity. Originating in the Western Czech town of Plzeň, the unique color and flavor spread globally, with new styles further branching off the Central European stem. It is with great pride that the Czech people are...
This study was designed to provide additional information to
determine: what difference variance in perceived attractiveness made
in perceived support of the feminist movement; what difference type
of garment worn made in perceived support of the feminist movement;
relationship between the judgments regarding perceived support of the
feminist movement and...
Causal inference is an important analytical tool to bridge the gap between prediction and decision-making. However, learning a causal network solely from data is a challenging task. In this work, various techniques have been explored for a better and improved causal network learning from data. Firstly, the problem of learning...
Biogeochemical mechanisms employed by key organisms, or symbiotic associations of organisms, transform the function and structure of their environment through processes recognized as ecosystem engineering. This dissertation seeks to investigate organism-ecosystem interactions that serve globally significant ecological functions in marine systems and impact how systems respond to environmental change. Using...
With rising concentrations of CO₂ in the Earth's atmosphere causing
concern about climate change, many solutions are being presented to
decrease emissions. One of the proposed solutions is to sequester excess
CO₂ in geological formations such as basalt. The deep subsurface is known
to harbor much of the microbial biomass...
Mental health among student athletes has gotten much more attention in the world of sport today. However, there has been a lack of research focusing on how the socioeconomic backgrounds of Division 1 student athletes can play a role in their mental health and their desire to seek out help...
Silvopasture is the planned and managed agroforestry system in which forage, livestock, and trees or shrubs are integrated in order to enhance individual components. Silvopasture has been identified as the most promising agroforestry system for the Pacific Northwest and Southeast United States. However, there have been few studies describing the...
Several experiments were conducted to examine the toxicity of Senecio jacobaea (SJ) in animals resistant to pyrrolizidine alkaloid (PA) intoxication and to determine the extent of alterations in mineral metabolism as a result of SJ intoxication. Inclusion of SJ into diets containing added copper (Cu) resulted in increased (P<.01) liver...
Literacy is often considered to be a basic set of skills to be mastered by the student; the conventional wisdom maintains that the individual who has mastered these skills is then literate. Scholars in the field of literacy studies, however, argue that such assumptions about literacy fail to take into...
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...
This dissertation has two objectives. The first objective is to determine where best to situate the study of mentoring (i.e. the 'making of scientists') on the landscape of the history of science and science studies. This task is accomplished by establishing mentoring studies as a link between the robust body...
The importance of local versus distant forcing is studied for the wind driven intra- seasonal (30-120 day) sea level anomaly (SLA) variations along the west coast of India. Three locations on the continental slope are chosen to represent the west coast. Two more locations, one east of Sri-Lanka and another...
In what is called participatory democracy scholars and practitioners have been calling for the involvement of citizens in decisions that affect their lives. Citizens who emerge to participate in technically complex, decision-making processes find that their involvement is often minimized, disregarded, or neglected due to barriers such as specialized scientific...
Physics sensemaking is a growing topic of study within the physics education community. Many lenses have been used to study sensemaking but few have considered how time and instruction can impact student sensemaking practices and ideas. In this dissertation, I present four studies that address four major questions: What sensemaking...
Hop (Humulus lupulus L. var. lupulus) is a diploid, dioecious plant with an extensive history of cultivation and use in brewing, as a textile, and for its therapeutic properties. Hop is prized for its ability to produce a variety of aromatic and flavor compounds, as well as compounds with anti-microbial...
Diversity literary awards and other sources were used to create a list of high-quality titles written by and about underrepresented groups. This list was used to assess the diversity and inclusiveness of the library collections of a land-grant university. Gaps in the collection and acquisition processes were identified and will...
Heavy metals, such as copper, zinc, and cadmium, are ubiquitous in stormwater and potentially toxic to aquatic organisms at low concentrations. Removal of heavy metals contamination by conventional treatment is expensive and does not always reduce metals concentrations low enough to ensure safety of all aquatic species. This research seeks...
In transboundary river basins, political borders oftentimes trace shared rivers across a basin. A border between territories can be seen as a space that is separated; however, it is actually one with the potential to unite populations and environments. A river basin is generally defined by its topography and hydrology....
The climate of the Pacific Northwest is in flux, and existing forest ecosystems are stressed and poised to shift in fundamental ways, with or without human intervention. This dissertation probes the nature of forest responses to environmental change through investigations of morphology and genetics of three species of alder co-occurring...
Fifty-seven species of wildlife rely on or frequently use snags for breeding, roosting, or denning in Oregon and Washington. Several publications offer information on use of snags by wildlife, influence of management activities on snags and snag users, and approaches to managing snags to benefit wildlife. Because of the diverse...
This study was designed to determine the common personal finance
competencies needed by graduating high school students in Oregon as
perceived by personal finance teachers from the subject matter areas
of business education, home economics, mathematics, and social studies
and the business community. Two other purposes were to (1) determine...
Within the past several years the technology of high-throughput sequencing has transformed the study of biology by offering unprecedented access to life's fundamental building block, DNA. With this transformation's potential a host of brand-new challenges have emerged, many of which lend themselves to being solved through computational methods. From de...
The focus of this thesis is to design, characterize, and apply novel computational methods and molecular systems to interrogate heterogeneous human gut microbiome-related phenomena. In Chapter 2, I design, implement, and characterize a method for embedding co-occurrence patterns derived from massive 16s amplicon datasets. I use this method to 1....
Quantum mechanics provides a conventional theory of scattering that is limited in
at least two ways: it focuses exclusively on the asymptotic regime and, in a more general
sense characteristic of all quantum descriptions, provides no concrete account of individual
particle evolution in spacetime. This is particularly true during the...
Published May 2002. Reviewed August 2013. 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