The polarization state of light in a single mode optical fiber may
be changed by linear and circular birefringence intrinsic to the fiber
or introduced by stress in the fiber due to external pressure, bends or
twists. Rotation of polarization may also occur in the absence of any
intrinsic or...
This study investigates the polarization and magnetooptic properties of single-mode fibers. These are important for the development of single-mode fiber applications such as interferometric and electromagnetic field sensors and coherent communication systems, which rely on the polarization state of the light. Various linear, circular and induced birefringence effects cause mode...
The 4s³P₁ state of argon decays radiatively by a resonance
transition to the 3p⁶¹S₀ ground state; the wavelength of this radiation
is 1067A. By direct observation of the decay of the 1067A radiation
from excited argon gas, a value of 0.93±0.06 x 10⁻⁵ seconds
has been obtained for the natural...
The hydroxide ion as a substitutional defect in KC1 can be photo-dissociated
at liquid nitrogen temperature by ultraviolet light. The
photochemistry of this system was investigated by EPR and optical absorption
methods. Theoretical calculations were also performed in an
investigation of the KC1:OH system.
The bleaching behavior of photochemically colored...
We describe a general finite-dimensional inner product space setting for studying the characterization of admissible linear estimators. We extend the results of LaMotte (1982) and derive necessary and sufficient conditions for an estimator to be admissible among an arbitrary affine set of linear estimators when they are compared using quadratic...
The focus of this study was to identify persistent
problems in the developmental history of the American
Department of Defense dependents schools in Okinawa, Japan.
The period of time covered was from 1946 through 1978.
The study includes historical descriptions of curriculum
development, obtaining and maintaining school facilities,
and the...
This research was conducted to compare the performance of
community college students to four -year institutional students both
of which were enrolled in one of three different programs of general
college chemistry for nonscience majors during the 1967 -68 academic
year. The three programs were defined as follows:
Program A...
An advanced forward 'area tactical radar network, now under
conceptual development by the Air Force Electronic Systems Division,
can be viewed as a novel form of computer network but with
other unique problems resulting from the specialized nature of the
application. The proposed network will link together a number of...
This thesis is concerned with simulating two forms of energy retrieval.
Standard computer programs are routinely used to simulate
such energy systems. However, the accuracy of these simulations is
not well documented. The main objective of the work presented here is
to evaluate the validity of this type of simulation...
The purpose of this study was to investigate the relationship between the Human Development Program and locus of control as measured by the Intellectual Achievement Responsibility Questionnaire. Sixty-one subjects were selected from the fourth grade at the West Salem School in Salem, Oregon for this study. All fourth grade students...
The purpose of this research was to examine the
effects of a co-curricular program on the behavior of
seriously emotionally disturbed (SED) middle school
students. Co-curricular activities are any school-based activities that give students an opportunity to
blend the various aspects of their academic learning
with personal actions.
This was...
This study examined the values, competencies, and goals of educators
related to preventing drug abuse. Its purpose was to develop a new theory to
define the crisis moral community among the educators: a theory which linked
the primary variables (values, competencies, and goals) in such a way as to
reveal...
One-minute rainrates were measured during two winter rainy
seasons in western Oregon to gain insights into the time-structure of
Oregon rainstorms. The averages of three non-dimensional relative
variance statistics were greater on the coast than inland. Rainrate
distributions showed that a greater portion of the total rain fell, at
higher...
Deliberately underirrigating a crop may yield economic
benefits. The optimal use of water by an irrigator
should be achieved under a deficit irrigation regime. It
is important to know how water deficits affect yields and
the interaction of the deficits with the scheduling of
irrigations.
A field experiment was conducted...
The effects of selected atmospheric variables on the power output
of a DOE Mod-2 horizontal-axis wind turbine are studied. Particular
attention is focused on unsteady, nonuniform flow conditions
within the rotor disc as represented by vertical profiles measured at
adjacent meteorological towers. Primary variables are wind speed,
wind direction and...
The recent development of the laser has made possible
communications with a beam of coherent light.
Since coherent light offers great advantages over radio
in the areas of beam directivity and information capacity,
optical communication systems have been proposed
for many uses.
The first section of this thesis gives a...
The design of a point focus, distributed receiver solar power system is presented. It is
shown that a two axis concentrator, with a two axis solar tracker and drive, has significant
advantages over other possible optical systems. It is further shown that each concentrator should
have its own optical receiver...
Several studies were conducted to determine if a more consistent
predictor of phytotoxicity to winter oats could be obtained with a
surfactant-herbicide ratio or a per-unit-volume concentration of surfactant,
independent of volume. The herbicides tested were 2,2-dichloropropionic acid (dalapon), 1,1'-dimethyl-4, 4'-bipyridinium
(paraquat), and 3-tert-butyl-5-chloro-6-methyluracil (terbacil) with
the nonionic surfactant X-77...
A new experimental technique for the study of
atom-surface interactions is obtained by passing an atomic
beam containing high-Rydberg states through a fine mesh
target. The technique is demonstrated to be a sensitive
probe of the electric fields of adsorbed dipole layers in
transmission experiments in which a time-dependent beam...
Purpose of the Study:
The main focus of this study was to compare the perceptions of district
superintendents, vocational administrators and trade and industrial
teachers toward vocational teacher certification procedures and
ramifications. The population consisted of 225 respondents randomly
selected from 15 states.
The following hypotheses were tested:
1. There...
A novel acyl protecting group for cytosine and adenine has been prepared
from 4-( chloromethyl) benzoic acid. Reaction of the acid with morpholine produces
4-( 4-morpholinyl )methyl benzoic acid which is converted to it's acid chloride
with thionyl chloride. This may be used to acylate cytidine and adenosine under
standard...
Machine Vision has been extensively applied in industry.
This thesis project, which originated with a local food
processor, applies a vision system to inspection of packages
for cosmetric errors. The basic elements and theory of the
machine vision system are introduced, and some image
processing techniques, such as histogram analysis,...
Published February 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
Research was undertaken to examine the influence of light intensity on the shoaling behavior, activity and anti-predator behavior of juvenile walleye pollock Theragra chalcogramma. Under a 12 h light/12 h dark photoperiod, juveniles displayed a diurnal shoaling and activity pattern, characterized by fish swimming in cohesive groups during the day,...
Prior studies have demonstrated that juvenile walleye pollock Theragra chalcogramma forage socially in schools for spatially and temporally clumped food, but forage more independently for spatially and temporally dispersed food. One advantage of social foraging is that fish in schools may be able to locate more food clumps than fish...
Rockfish species of the genus Sebastes are notable for being numerous and diverse. Rockfishes are unusual among fish because they fertilize their eggs internally and release live, swimming larvae. They undergo complex courting behaviors, which may allow females to be selective about their mates. The major histocompatibility complex (MHC) has...
Full Text:
major histocompatibility complex (MHC) 2
3
ML Johansson
1,4,*
, KClifford
2
, B Fodness
2
, NA
Rockfish species of the genus Sebastes are notable for being numerous and diverse. Rockfishes are unusual among fish because they fertilize their eggs internally and release live, swimming larvae. They undergo complex courting behaviors, which may allow females to be selective about their mates. The major histocompatibility complex (MHC) has...
Full Text:
histocompatibility complex (MHC)
M. L. Johansson1,4,*, K. Clifford2, B. Fodness2, N. A. Vazquez3, M. A. Banks1
Published November 1956. 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
Rockfish species of the genus Sebastes are notable for being numerous and diverse. Rockfishes are unusual among fish because they fertilize their eggs internally and release live, swimming larvae. They undergo complex courting behaviors, which may allow females to be selective about their mates. The major histocompatibility complex (MHC) has...
The refractive index of particulate matter suspended in seawater
is nonuniform and potentially is an indicator of composition and
origin. A method is described for determining the refractive index
distribution. The method requires the measurement of the volume
scattering function and assumes the total size distribution to be
capable of...
The purpose of this study was to identify the dry season
vegetable production sources of information, technical knowledge
base and needs of women farmers expressed by the women farmers
themselves in Ngabu Agricultural Development Division, Malawi,
Central Africa.
The objectives were to identify the following aspects of dry
season vegetable...
Mentor teachers are currently seen as a solution to
education's dilemma of how to orient beginners into the
profession and provide educational advancement for its most
capable, experienced teachers. One goal of Oregon's mentor
program is to have mentors provide their proteges with
instructional assistance through an observation process.
The...
THE PROBLEM. The problem was to study the recreation resource-
user and to determine attitudes, characteristics and relationships
between selected variables common to these users.
PURPOSE OF THE STUDY. The purpose of the study was to
examine:
1) Who are the recreation resource-users of the Bend Ranger
District, Deschutes National...
There were six major objectives of this study. The first was to
identify the common career education competencies that elementary
and/or junior high school teachers should have as they adopt and
utilize the concepts of career education. The second purpose was to
identify where, in the professional preparation of the...
The purpose of this study was to compare two groups of freshmen
entering Oregon State University in the fall of 1970; (1) men and
women who were uncertain about choices of academic majors at the time
of entry, and (2) men and women who were certain about choices of
academic...
Published September 1959. 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
We explored whether anti-predator behavior and intrinsic growth are co-evolved traits in 3 co-occurring juvenile flatfish species: English sole Pleuronectes vetulus, Pacific halibut Hippoglossus stenolepis and northern rock sole Lepidopsetta polyxystra. English sole are risk prone, adopting behavior that renders them more vulnerable to predation, while northern rock sole are...
Temperature strongly influences the growth of crustaceans and directly controls distribution. Despite being commercially important, there are no data on temperature effects upon growth in newly settled southern Tanner crab Chionoecetes bairdi. Recently settled crabs were reared through three consecutive molts, both individually and in groups, at four different temperatures;...
The influence of cultivar and maturity on polyphenolic composition and
antioxidant activity was investigated by UV-Visible spectrophotometry and
analytical high performance liquid chromatography (HPLC) in commercially
important blackberry cultivars and selections. The anthocyanin pigments changed
tremendously with ripening. Total anthocyanins increased from 74.7-317 mg/100g
fw from underripe to over ripe...
I radio-tagged 191 Hatch-Year (HY) and After-Hatch-Year (AHY) female northern pintails (Anas acuta) in the San Joaquin Valley (SJV), California and studied their movements, habitat use and survival during August March, 1991-94.
Overall, 94.3% wintered in central California; the highest percentage left during
the 1991 drought. Tulare Basin and Mendota...
The purpose of this study was to compare the acceptance of
specified kinds of student behavior of three selected residence hall.
groups at Oregon State University: male elected residence hall
leaders (N = 50), male appointed residence hall judicial board
members (N = 50), and a random sample of men...
The purpose of this study was to determine the need
for mathematics inservice training for untrained and
trained teachers in K-7 rural schools in Manicaland,
Zimbabwe. The auxiliary teachers do not have any
professional preparation before entry into the teaching
profession. The study sought to determine the mathematics
areas needed...
Published November 1968. 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 groundfish trawl fishery operating off the coasts of Oregon
and Washington 1985-1987 caught six major assemblages of species
which could be treated as units in developing mixed-species
management plans. Eighty-one percent of the tows observed on
commercial vessels were consistently placed in one of the assemblage
designations using three...
The effects of soil moisture, mineral nutrition and
temperature on the susceptibility of peas to inoculation
with bean yellow mosaic virus (BYMV) by the green peach
aphid, Myzus persicae (Sulz.) were investigated along with
three vector-virus relationships. In addition, a comparative
study was made of two methods of evaluating susceptibility...
This study, conducted with the cooperation of the Oregon Comprehensive
Health Planning Agency, Salem, had a threefold purpose:
(1) to identify the role of the physician's assistant (PA) in Oregon,
(2) to provide substantive data for recommendations regarding changes
in PA licensure, and (3) to provide information which may be...
Coffee trees growing in the Kona district of Hawaii
were treated with different concentrations of either BA,
GA3, or Promalin, and pruned at the time of flowering. No
significant differences in the flowering and fruit ripening
pattern were found. High concentrations (100 mg/1) of
growth regulators decreased fruit fresh weight....
Because riparian canopy controls most energy inputs to stream
ecosystems, it directly affects the structure of aquatic food webs and the
ecological processes that govern interactions among trophic levels. This
study addresses the interdependence among riparian canopy, benthic
community structure, and the carrying capacity of high desert streams for
salmonid...
Cancer was recognized as a genetic disease at least four decades ago, with the realization that the spontaneous mutation rate must increase early in tumorigenesis, to account for the many mutations in tumor cells as compared with their progenitor normal cells. The genetic basis for cancer was established also from...
Full Text:
, and Cancer
Christopher K. Mathews
Department of Biochemistry and Biophysics
Oregon State
Fifty-seven stranded marine mammals representing seven species
were examined over a period of three years. The primary cause of
death along with contributing factors, incidental pathology and
parasites is reported for each animal examined.
Gunshot wounds directly or indirectly caused the death of 14
of 44 seals and sea lions...
In an effort to isolate and characterize cardiac glycosides C-17
binding site(s), we have synthesized different affinity and photoaffinity
C-17 side chain probes. These probes were screened for their
ability to inhibit Na⁺,K⁺-ATPase enzyme, a pharmacological receptor
of cardiac glycosides. The enzyme was isolated from hog kidney.
Screening of these...
Several popular cultural movements emphasizing indigenous spirituality have arisen in the United States and Europe within the past thirty years. Spiritual discourses attributed to Native Americans, among other groups, are borrowed by Euro-Americans in search of alternatives to dominant ideologies. In such a circumstance, Native Americans become part of a...
Social media platforms are effective tools used
to help communicate and increase involvement in cultural, political,
and scientific circles. In 2012, an ad hoc committee was
established to explore online fisheries science communication
and how social media platforms can be utilized by the American
Fisheries Society (AFS). A survey was...
Wood debris serves an important substrate for macroinvertebrates in streams. Particle size reduction due to feeding and other activities can be an important role of the fauna in wood degradation. In this study the Ephemeroptera associated with wood were investigated, with the objective of assessing their impact in the degradation...
To maximize the utility of research to decisionmaking, especially given limited financial resources, scientists must set priorities for their efforts.
We present a list of the top 40 high-priority, multidisciplinary research questions directed toward informing some of the most important current
and future decisions about management of species, communities, and...
It was the intent of this investigation to compare the performance
of community college students to four-year institutional students, both
of whom were enrolled in a college general biology program (GS 101,
102, 103) during the 1967-68 academic year. During the week of
May 27, 1968 measurements were taken of...
The purpose of the current study was to examine program- and community-level characteristics related to total points earned by early care and education programs in North Carolina’s Tiered Quality Rating and Improvement System (TQRIS). Multiple statewide data sources, program- and community-level characteristics were combined to better understand associations with total...
It is critical to study factors that are important for origin and maintenance of biological
diversity. A comparative approach involving a large number of populations is
particularly useful.We use this approach to study the relationship between ecological
factors and phenotypic diversity in Icelandic Arctic charr (Salvelinus alpinus).
Numerous populations of...