Vision is a flexible, non-contact sensor that can be used for position feedback in
closed-loop control of dynamic systems. Current vision systems for industrial
automation provide low sample rates and large sample delays relative to other types of
position sensors. Poor sample rates and sample delays are a result of...
The yields of 235 projectile-like and target-like fragments from the interaction of ¹³⁶Xe with a thick target of ²⁰⁸Pb at a center-of-mass energy, E[subscript cm], of 450 MeV were measured using γ-γ-γ coincidence data from Gammasphere and off-line γ-ray spectroscopy. The results give an expansive picture of the production cross...
Immune system development during prenatal and early-life periods are essential for healthy development. Environmental and nutritional factors during these periods have strong influences on immune development and can have impacts on disease susceptibility for an individual throughout adulthood. Globally, hundreds of millions of people experience elevated environmental exposure to arsenic,...
Community colleges serve the most diverse student populations in higher education. They consist of non-traditional, part-time, older, intermittent, and mobile students of different races, ethnic backgrounds, language preferences, physical and mental abilities, and learning style preferences. Students who are academically challenged may have diverse learning characteristics that are not compatible...
Jean Baptiste Lamarck (1744-1829) is considered here in the
context of the Enlightenment effort to develop a science of man. His
Philosophie zoologique (1809) and the Systeme analytique (1820) are
the two principal relevant works examined in depth to discover how
he meant to base a science of man on...
Negative feedback has become ubiquitous in science both as a
technique and as a conceptual tool. As a technique, negative feedback
has a long history; devices based in its use were made in
antiquity. It has only been during the last century, however, that
rigorous quantitiative methods have become associated...
This history concerns the scientific contributions of Charles
Babbage (1791-1871) to mathematics, to the invention of calculating
machines, and machine tools, to the development of scientific ideas
through a wide variety of scientific investigations and his involvement
in several different scientific reforms. Babbage considered himself
a philosopher in the broadest...
The effect of frozen storage time on the composition
of the cell wall polysaccharide (CWP) of muskmelon (Cucumis
melo) cultivars at different stages of maturity was investigated.
Changes in composition, firmness, drip loss, and
color of Cantaloupe and Honey Dew melon flesh were determined
at three stages of maturity and...
Moral elevation refers to the distinct state of warmth and expansion that some individuals experience after witnessing or learning about the altruistic acts of others. Elevation is a particularly interesting positive emotion for its capacity to promote various altruistic behaviors, as well as motivate witnesses to improve their character. The...
Before we can write intelligently concerning
any subject, we must understand exactly what we are
writing about. As the title tells us, this thesis
deals exclusively with the work and incidentally with
the lives of Robert and Elizabeth Barrett Browning, two
notable nineteenth century poets.
“The system is fucked. Everything needs to change” was stated by Ashley Paige, a professional dominatrix and author in We Too: Essays on Sex Work and Survival, at a book launch event. Paige’s sentiments are poignant and a call to action to all of us. Through this thesis, I will...
The myxozoan Ceratonova shasta is an intestinal parasite of salmon and trout that causes ceratomyxosis, a disease characterized by severe inflammation of the intestine that can lead to hemorrhaging, necrosis, and death of the fish host. The parasite is endemic to the Pacific Northwest of the United States and Canada,...
The gut microbiome has been previously implemented in a number of diseases. Of note is its substantial role in metabolic syndrome, which encapsulates a group of conditions that increase the risk of cardiovascular disease, type 2 diabetes, and stroke. Understanding the causal relationships between the gut microbiome and host processes...
Changes in climate caused by increased concentrations of carbon dioxide (CO₂) in the Earth’s atmosphere have led land and ocean surface temperatures to increase by 0.85°C and sea level to increase by 19 cm relative to preindustrial times. Global climate change will lead to further alterations in mean temperature and...
Diclofop-methyl [me yl 2-(4-(2,4-dichlorophenoxy) phenoxy) propanoate] hydrolysis, degradation, and leaching were studied in field and laboratory experiments. Greater than 75% of the applied diclofop-methyl hydrolyzed to diclofop in 2 days at 4°C, the prevailing soil temperature during western Oregon winters. Degradation beyond the diclofop molecule, also an active herbicide, was...
A numerical model, simulating the complex behavior of reinforced soil walls using the finite element method, was developed to evaluate the behavior of a surcharged, geosynthetic-reinforced retaining wall with modular block facing. A nonlinear elastic-plastic constitutive soil material model was calibrated to experimental plane strain test data, while the performance...
This thesis explores the gendered histories of slavery through the concept of haunting in two neo-slave narrative novels: Toni Morrison’s A Mercy and Octavia Butler’s Kindred. I offer readings of these texts through slavery’s geographic and temporal implications, in order to argue that the logics of antiblackness remain a fundamental...
With declining populations and low calf recruitment in northeastern Oregon, much interest has been generated to study the survival rates and causes of mortality of Rocky Mountain elk (Cervus elaphus nelsoni). I investigated the causes of elk calf mortality and the effects of predation risk on birth-site selection by cow...
More than 1.2 million people worldwide require regular hemodialysis therapy to treat end stage renal failure. In the United States alone, there are 300,000 patients and the National Kidney Foundation predicts that this number will double in the next 10 years. Currently most dialysis patients receive treatment at a dialysis...
The development of assays for stress in marine fishes is vital for studying the impacts of bycatch in fisheries and for determining the health of fish being cultured or used in research. This research developed behavioral and physiological assays for stress in juvenile sablefish, Anoplopoma fimbria, a species that comprises...
Post World War II victory culture and its fallout-the consensus ideology-led to the creation of a middle class willing to conform to a prescribed set of ideals, safely removed from all danger, and enjoying the material benefits of a growing middle-class income bracket. Walt Disney and Hugh Hefner, two seemingly...
The purpose of the study was to analyze and compare the teaching
styles of a trial group of junior secondary science teachers
trained to use and using new materials, and a control group of teachers
using traditional materials. The new materials consisted of portable
science kits, demonstration apparatus, teacher's guides,...
During the years between 1930 and 1950 a number of attempts
were made to introduce techniques and ideas from cytology,
ecology, and genetics into the field of taxonomy. Advocates of
this "experimental taxonomy" believed that cytological, ecological,
and genetic techniques would provide a rigorous, objective
methodology to replace the traditional...
The relationship between population characteristics and population productivity is fundamental to sustainable fisheries management, but predicting productivity remains a challenging task. Proposed mechanisms driving the variability in productivity at a given population size have included environmental and demographic factors related to the age structure of the population, but the broad-scale...
The purpose of this study was to determine if a significant
difference in cognitive achievement and retention occurred when skeletal
system anatomy and terminology were presented utilizing either videotaped
presentations or a traditional laboratory procedure.
Fifty-three first semester nursing students enrolled in biology
(Bio. 160 anatomy and physiology) at Lethbridge...
Confederate governors Joseph Brown and Zebulon Vance have long been considered obstructionists to the Confederate cause through their steadfast commitment to states' rights. States' Rights Nationalists throws in its own interpretation of these two men into the historiographical conversation taken on by well-known Civil War historians like Frank Owsley, Albert...
The purpose of this thesis is to explore civil engineering students’ and professional civil engineers' understanding of concepts within statics and fluid mechanics. The studies described herein begin to examine theories of situated cognition utilizing concept inventories, which are sets of multiple-choice questions where the incorrect answers are based on...
The Steller Sea Lion Research Initiative was passed in 2001 to provide funding to help scientists determine causes and solutions for the population crash of Steller sea lions (Eumetopias jubatus). In response to need to understand population dynamics of Steller sea lions, NOAA Fisheries has spearheaded a large-scale, range-wide research...
Student engagement is key for learning in the classroom, and different levels of engagement have led to greater learning. The ICAP framework distinguishes these different levels of engagement by different overt behaviors, but little is known about how to measure different forms of engagement in the classroom. This article will...
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____________________________________________________________
Shane A. Brown
Student engagement is key for learning in the classroom, and different levels
Within Oregon there is considerable interest in the possibility of converting woody biomass to energy. This interest stems from three converging factors: the desire to reduce the threat of uncharacteristic wildfire by removing excess material from the forests, the possibility to stimulate rural economies that are dependent on forest products,...
Climate change will impact the location of suitable habitat for tree species in the Pacific Northwest. Locations that become unsuitable will experience increased levels of tree mortality and diminished levels of tree growth. Understanding how these impacts will spatially manifest is vital for efficient management of natural resources. An invaluable...
The Forest Inventory and Analysis (FIA) program conducts an annual inventory throughout the United States. In the western United States, 10% of all plots (one panel) are measured annually, and a moving average is used for estimating current condition and change of forest attributes while alternative methods are sought in...
Halyomorpha halys Stål, brown marmorated stink bug or BMSB, is now present in 43 US states. A native of eastern Asia, this pest can feed on ~200 different plant species damaging bark, leaves, buds, stems, and fruits. Many of these plant species include wild plants, ornamentals, and agricultural crops. BMSB...
Since the dawn of the computer age, there has been a push to create miniature
devices. These devices were initially integrated circuit (IC) devices to perform
calculations for computers. As the technology progressed, the scope of the devices
diverged to included microelectromechanical (MEMS) devices, meaning that the devices
perform mechanical...
Published April 1910. 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
More than 1.2 million people worldwide require regular hemodialysis therapy to treat end stage renal failure. Current hemodialysis systems are too expensive to support at-home hemodialysis where more frequent and longer duration treatment can lead to better patient outcomes. The key cost driver for hemodialysers is the cost of the...
When a temporal trend in forest conditions is present, standard estimates from paneled forest inventories can be biased. Thus methods that use more recent remote sensing data to improve estimates are desired. Paneled inventory data from national forests in Oregon and Washington, U.S.A., were used to explore three nearest neighbor...
Information on current forest condition is essential to assess and characterize resources and to support resource management and policy decisions. The 1998 Farm Bill mandates the US Forest Service to conduct annual inventories to provide annual updates of each state's forest. In annual inventories, the sample size of I year...
The western cherry fruit fly, Rhagoletis indifferens
Curran, was studied to determine the suitability of the
sterile insect technique for its control. To obtain
insect material, field collection of maggots is preferred
to sifting of soil or rearing on artificial diet.
The western cherry fruit fly is strictly univoltine;
only...
The purpose of the study was to assess county extension agents'
knowledge of geotextiles; to determine their current level of
information and their location on an adoption-diffusion curve; and to
determine the agents' attitudes toward the potential use of
geotextiles in agriculture, specifically in soil erosion control.
A questionnaire was...
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...
Nature of the Phenomenon
The primary purpose of this investigation was to determine if the
predisposition of counselor candidates on selected factors found to be
associated with effective counseling, upon entering a counselor education
program, was predictive of effective counselors at the end of that
program.
Hypotheses
Two central hypotheses...
The purpose of this thesis is (1) to study two Oregon communities
and to report data related to their concepts of community
education and (2) from this data, to develop guidelines for the planning,
organization, and implementation of comprehensive community-wide
educational programs. In accomplishing these purposes, it is
hoped a...
In this thesis anomalous downcore shallowing of paleomagnetic
inclinations is interpreted to be caused by sediment compaction. Thus,
compaction-induced inclination shallowing may influence tectonic
reconstructions that are based on inclinations from deep-sea sediment
cores.
Progressive downcore shallowing of the remanent inclination was
observed in a 120-m section of Plio- Pleistocene...
The thermal sensitivity of Arctic fish species is poorly understood, yet such data are a critical component of forecasting and understanding ecosystem impacts of climate change. In this study, we experimentally measured temperature-dependent growth and routine swim activity in the juvenile stage of two Arctic gadids (Arctic cod, Boreogadus saida...
Springs in arid lands provide critical habitat for a variety of species and functions to humans, yet the ecology and management needs of springs to maintain these values are poorly understood. To examine plant communities along spring watercourse-upland gradients, we sampled 12 springs at low (desert) and high (forest) elevations...
Archaeologists use diversity as one way of
characterizing their assemblages. Diversity refers to both
the number of artifact classes present (richness) and the
proportional representation of classes (evenness).
Numerical diversity indices measure one or both components.
Archaeologists use assemblage diversity to infer behavior
of prehistoric cultures.
Archaeological inferences about behavior...
Climate models indicate the Arctic will undergo dramatic environmental change with forecasted increases in temperature and river runoff. Saffron cod (Eleginus gracilis) is abundant in nearshore waters and appears in the diet of many Arctic sea birds and marine mammals; however, little is known about its early ecology and consequently...
Chinook Salmon Oncorhynchus tshawytscha returns to the Yukon River basin have declined dramatically since
the late 1990s, and detailed information on the spawning distribution, stock structure, and stock timing is needed to
better manage the run and facilitate conservation efforts. A total of 2,860 fish were radio-tagged in the lower...
Premise of the study: Triassic and Jurassic fossils record structural changes in conifer seed cones through time, provide the earliest evidence for crown-group conifer clades, and further clarify sister-group relationships of modern conifer families. A new and distinct seed-cone from the Isle of Skye in western Scotland provides the oldest...
Home gardens produce the best yields when planted with vegetable varieties adapted to local growing conditions. Market growers and home gardeners may be able to use the information from these trials to help them choose adapted varieties, based on vegetable qualities that are important to them (appearance, earliness, flavor, yield,...
Abstract: Background: The cross section for forming a heavy evaporation residue in fusion reactions depends on the capture cross section, the fusion probability, P[subscript CN], i.e., the probability that the projectile-target system will evolve inside the fission saddle point to form a completely fused system rather than reseparating (quasifission), and...
Since underrepresented nominees began filling U.S. Supreme Court seats, political scientists have examined the possibility of existing biases towards potential judges based upon their identities or innate characteristics. Some scholars have identified that the gender identification and ethnic affiliations of candidates have affected the behaviors displayed by those involved in...
G. Spencer Brown's book Laws of Form has been enjoying a vogue among social and biological scientists. Proponents claim that the book introduces a new logic ideally suited to their fields of study, and that the new logic solves the problems of self-reference. These claims are false. We show that...
About 7,000 years ago two major tephra-falls blanketed the
Pacific Northwest in volcanic ash. These two tephra-falls, identified
as the Llao and climatic tephra-falls, were a part of the eruptive
events that led up to the collapse of Mount Mazama to form Crater Lake
in the southern Oregon Cascades.
The...
Climate change is increasing the severity of pest and pathogen infestations affecting forests. Resulting shifts in disturbance patterns can have substantial ecological, social, and economic impacts on forested ecosystems and their dependent communities. Researchers are actively investigating methods to improve tree resistance to specific pests and pathogens and enhance forest...
Published February 1910. 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
Published 1914. 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
Season affects many characteristics of populations and, as a result, the interpretations of surveys conducted at
different seasons. We explored seasonal variation in occupancy using data from four studies on the Pacific marten
Martes caurina. Detection surveys were conducted during winter and summer using either cameras or track stations.
We...
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., Slauson, K. M.,
Rustigian-Romsos, H. L., & Spencer, W. D. (2015). Effects of season on
occupancy and
The complexity of forest management has increased with the scope of resources of concern and the level of scrutiny from stakeholders. The design and use of specialized computer software, often referred to as “decision support systems” (DSS), is one method for helping managers deal with this complexity. DSS have proven...
In this dissertation, I investigate the evolution and genomes of carabid beetles, a worldwide family of over 38,000 species. I focus on two species-rich groups, the tribes Chlaeniini and Bembidiini, both of which are primarily found on the shores of bodies of water. The former are distinctive for their defensive...
Organisms eating each other are only one of many types of well documented and important interactions among species. Other such types include habitat modification, predator interference and facilitation. However, ecological network research has been typically limited to either pure food webs or to networks of only a few (<3) interaction...
Bacterial mutualists can modulate the biochemical capacity of animals. Highly coevolved nutritional mutualists do this by synthesizing nutrients missing from the host’s diet. Genomics tools have advanced the study of these partnerships. Here we examined the endosymbiont Xiphinematobacter (phylum Verrucomicrobia) from the dagger nematode Xiphinema americanum, a migratory ectoparasite of...
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Endosymbiont
Suggest a Role in Nutritional Symbiosis
Brown, A. M., Howe, D. K., Wasala, S. K., Peetz, A. B
Because the environmental threats are becoming global in scope, international cooperation and global governance issues are in the spotlight. The most controversial environmental law and policy problems arise in the areas where no individual state has sole responsibility for governing, "global commons." Scholars believe that the best way to deal...
Increasingly, objectives for forests with moderate- or mixed-severity fire regimes are to restore successionally diverse landscapes that are resistant and resilient to current and future stressors. Maintaining native species and characteristic processes requires this successional diversity, but methods to achieve it are poorly explained in the literature. In the Inland...
The purpose of this research was to investigate the
effectiveness of using an early childhood language intervention
program with children who had been determined to be
language delayed at the ages of 3, 4 and 5 and to determine
how the early childhood langauge intervention program was
associated with changes...
BACKGROUND: Little is known regarding the prevalence or risk factors for non-comprehension and non-compliance with discharge instructions among older adults.
OBJECTIVE: To quantify the prevalence and identify patient characteristics associated with non-comprehension and non-compliance with discharge instructions.
RESEARCH DESIGN: Prospective cohort study
SUBJECTS: 450 adults aged ≥65 admitted to medical...
Published March 1966. 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
During austral summer 1997, satellite imagery revealed enhanced chlorophyll associated with the Antarctic Polar Front at 170°W. Phytoplankton growth conditions during the early stages of the spring increase were investigated on the Antarctic Environment and Southern Ocean Process Study Survey I cruise using flow cytometry (FCM) and microscopy to characterize...
The fission Time Projection Chamber (fissionTPC) is a compact (15 cm diameter) two-chamber
MICROMEGAS TPC designed to make precision cross-section measurements of neutron-induced fission.
The actinide targets are placed on the central cathode and irradiated with a neutron beam that passes
axially through the TPC inducing fission in the target....
Modern science was produced by a Christian society,
and although science has had an effect on Christianity, it
could not itself remain unaffected. In the second half of
the nineteenth century, the subject of evolution was as
much a religious as a scientific issue. The battle line
was drawn and...
The construction of the first genetic map in autotetraploid blueberry has been made possible by the development of new SNP markers developed using genotyping by sequencing in a mapping population created from a cross between two key highbush blueberry cultivars, Draper × Jewel (Vaccinium corymbosum). The novel SNP markers were...
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. Eric Jackson . Allan Brown . Christine A. Hackett
Received: 31 August 2015 / Accepted: 25 January 2016
The Corvallis fault is a 50 km long northeast-trending structure, part of which defines the boundary between the central Willamette Valley and the east-central Coast Range of Oregon. Previously the fault had been mapped as either a high-angle reverse or normal fault, with the east block down. New gravity data...
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and Spencer sandstones. The thrust geometry is similar to
that of the Laramide thrusts of the Rocky
On January 2, 2016 a militia occupied the Malheur National Wildlife Refuge in Oregon and captured national attention. The militia vowed to occupy until certain demands were met, and among these demands was a call for less federal control of land. While the occupation lasted 41 days, the militia remained...
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,...
Hydric soils are defined through the hydric soil definition, and a means to identify hydric soils has been established through hydric soil criteria and Field Indicators of Hydric Soils in the U.S. However, the field indicators are a recent development that requires more research and testing to increase our knowledge...
The frame of reference for understanding the
rhetorical significance of cultural acts lies in the
identification and explication of the diversity of theories
which encompass sociological and anthropological
definitions of culture. The paradigms presented in this
thesis range from unilinear evolution, biological and
environmental determinism, materialism, historical
ethnology and reductionism...
Mycorrhizal fungi in arid and semiarid rangelands have received little study in southwest Asia and north Africa, although they are important in food production and rangeland productivity. The desert truffles of the genera Terfezia and Tirmania form fruiting-bodies and mycorrhizae with rangeland plants. This thesis treats the taxonomy and the...