Allocating use in wilderness by rationing is one way to
control crowding and resource deterioration problems. The wilderness
user's perception of wilderness management systems is vital to
effective management decisions when overuse problems arise. The
purpose of this study was to determine which direct rationing
systems users preferred. The five...
The objectives of this study are (1) to compare the
costs of providing camping among different types of U.S.
Forest Service developed campgrounds in Oregon and Washington
and (2) to help determine possible policy implications
regarding future management in relation to costs of providing
the various campground facilities. To meet...
Eutrophication is the accelerated aging process of a lake which
generally decreases the water quality in terms of aesthetic and recreational
uses. At Liberty Lake, near Spokane, Washington, eutrophication
has become a problem. Many individuals and agencies are interested in
the benefits that occur when the lake's water quality has...
Certain important concepts from the theory of Gibbs states are
first described in the simple setting of the finite volume case. With
the extension to the infinite volume case, Gibbs states are defined,
exhibiting two different approaches to the subject. The general
structure of the set of Gibbs states is...
Music performance and education faced unique barriers during the COVID-19 global pandemic which made it nearly impossible to effectively implement online learning. To better understand these barriers and what improvements might be made during future pandemics that entail periods of isolation, I collected the oral histories of eight Oregon State...
South Pacific humpback whales were devastated by commercial whaling in their Antarctic feeding areas during the 20th century. Understanding migratory connections and current abundance of these isolated breeding stocks is crucial for the allocation of historical Antarctic catches in population dynamic models used to assess current recovery. However, only a...
The objectives of this study were to determine (1) the relationship between income and consumption for the Newport-Toledo economy, both for aggregate consumption expenditures and for various expenditure categories, and (2) the relationship between consumption and other variables in addition to income.
An economic cost analysis of 258 Forest Service developed recreation sites in Region One examined eleven different site types, including campgrounds, picnic grounds, boating and swimming sites, interpretive sites, and information sites. Costs were estimated for planning, facilities, and operation and maintenance. Averaging costs by category showed that, in general,...
A detailed cost analysis was performed on 111 U.S. Forest Service campgrounds in the Pacific Northwest (Region 6). Five experience levels were analyzed to estimate facility, operation and maintenance, and opportunity costs. Cost functions, estimated by multiple linear regression analysis to predict the effect of size (number of sites) and...
The authors describe a consistent and theoretically sound methodology for evaluating nonmarket uses of forest resources, particularly those associated with recreation. The analytical methodology is applied to a forest management unit. Present net worth of developed campgrounds and dispersed recreation activities on Oregon State Department of Forestry Lands in 1977...
Published July 1981. 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 research suggests that individuals might use compensatory movement patterns in their ACL-reconstructed (ACLR) limb when performing a triple hop (TH) to overcome quadriceps weakness. The purpose of this study was to determine if ACLR females exhibit differences in TH performance compared to previously uninjured females. Nineteen females with ACLR...
Gibbs sampling method is an important tool used in parameter estimation for many probabilistic models. Specifically, for many scenarios, it is difficult to generate high-dimensional data samples from its joint distribution. The Gibbs sampling provides a way to draw high-dimensional data via the conditional distributions which are typically easier to...
The cultivated potato (Solanum tuberosum) is one of the most important food crops in the United States, as well as globally. As demand rises, growers in the Pacific Northwest are revisiting their crop management strategies to determine whether there are additional ways to enhance crop productivity while managing plant and...
Published December 1947. 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
The topic of summability methods has been studied by many
although the name of G. H. Hardy and his classical work "Divergent
Series" is best known. Almost all of the early work was done using
single sequences or series. In the past 30 years research has been
done extending some...
With the unique conceptual and mathematical backgrounds of every introductory physics student, there is no way to design a rigid curriculum that anticipates and meets every student’s needs. We can employ machine learning to explore the correlations that exist in the voluminous data from educational settings. That is, institutional, gradebook,...
During his lifetime C. S. Lewis chose to speak to Christians in plain and simple language that they could understand. Lewis taught and defended truths that he felt were discernible through reason. Morality, free will, and the divinity of Jesus Christ were fundamental to his core beliefs and teachings. His...
Clay minerals from sediment samples obtained on Astoria Fan were analyzed by X-ray diffraction. Clay minerals are defined for the purpose of this study as crystalline phyllosilicates less than two microns in equivalent settling diameter. The clay minerals are subdivided into the five common families: montmorillonite, chlorite, vermiculite, illite, and...
Holocene hemipelagic deposition of terrigenous silts and clays
dominates sedimentation on most of the Oregon and Washington continental
slope. The sources of these sediments, the mechanisms causing sediment
dispersal, and the relative contributions of the various continental
sources to the marine deposits have been investigated using quantitative
mineral and geochemical...
Trace metals in the aquatic environment are generally concentrated
on the surface of solid geochemical phases which eventually become incorporated
into estuarine and marine sediments. The mechanism of trace
metal concentration is believed to be adsorption with various geochemical
phases such as hydrous metal oxides, clays, and organic matter.
Metals...
Published May 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
Ascorbic acid, or vitamin C, is well known as a co-factor for proline-hydroxylase and as an anti-oxidant. However, it is also capable of forming covalent bonds, particularly in the role of a nucleophile, henceforth termed 'ascorbylation'.
The ascorbylation of electrophiles can occur under physiological conditions. Furthermore, there are a number...
The purpose of this study is to explore the uncertainty and fear that DACAmented college and university students experience with the potential termination of the United States Deferred Action for Childhood Arrivals (DACA) program. There is limited research on the experiences of DACAmented individuals during this time of uncertainty for...
Distress among resettled refugees in the U.S. consistently reflects refugees’ experiences of discrimination, re-traumatization, gaps in healthcare services, and disrupted expectations and lived-realities. This thesis aims to fill a critical need for ethnographic studies investigating how recent anti-immigrant, -Muslim, and -Arab rhetoric and policies combine with chronic gaps in services...
Characterizing a mindset landscape within the physics classroom is crucial to portray the variation and context of mindset in the classroom. This paper will be looking at students enrolled in Oregon State University’s PH20x series, which is a series of three algebra-based introductory physics courses. This project is an exploratory...
A flipped classroom provides students with course content in the form of videos, readings, and/or simulations that they complete during the time traditionally used for homework assignments while in-class time is devoted to hands-on group learning activities. Project BoxSand is gathering quantitative data on how students in a flipped classroom,...
Two studies were conducted involving rare earth elements. In the
first study, the use of rare earth diethylenetriaminepentaacetic acid
(DTPA) complexes as stable actiable tracers, a method of stable-isotope
tracing with post-sampling neutron activation analysis, was explored.
The persistence of rare earth DTPA complexes in estuarine waters was
measured in...
Bacterial soft rot of potato (Solanum tuberosum), caused by Pectobacterium and Dickeya species, is among the most common and destructive potato diseases in the United States. These pathogens cause a variety of vascular wilts, and in potato cause a disease complex that includes tuber soft rot, blackleg, aerial stem rot,...
A program of research has been established at Oregon State
University to study wood residue combustion using an experimental
spreader-stoker combustor. This research was conducted to increase
the understanding of combustion occurring in wood fired boilers.
Using Douglas Fir screened to 3/8-3/4 inches, two 4x4 factorial
experiments were conducted varying...
This paper describes a technique for separating the
two signal voltages which are necessary for balancing an
ac impedance bridge from its detector output voltage.
The technique is unique in that the necessary information
is derived from modulations on the generator voltage.
These modulations are formed by perturbing the variable...
Fifteen species of Noctuidae (Lepidoptera) were collected in alfalfa and
peppermint in western Oregon. Seven of these species were hosts for the braconid
parasitoid Meteorus communis. The most frequently parasitized (percent) species were
Agrotis ipsilon (35.3), Dargida procincta (15.0), and Peridroma saucia (6.9). Other
species parasitized were Autographa californica (3.8)...
In this paper a signal-processed antenna and receiver system is
proposed and analyzed. In addition, a simulation of the balanced-mixer portion of the processing system is made on a hybrid computer
to find the bandwidth limitations for the total system. The system
utilizes both the amplitude and phase information of...
This study was conducted to delineate the cause or causes of
winter deaths in deer and to provide information from which emergency
feed could be formulated. Deer were shot at monthly intervals through
the winter in Wallowa County, Oregon. Samples from the rumen, liver,
mandible, blood and feces were taken...