The purpose of this thesis is to discuss concepts and strategies that provide a general framework which can be used to develop a microcomputer simulation model for educating senior public officials on the linkages between the macroeconomy and agriculture in a developing country. Tradition has it that agriculture is preeminently...
The effect of reducing sodium chloride in Cheddar cheese was
studied. Milled curd from a split-lot was salted at selected NaCl
concentrations and analyzed through aging by sensory and rheological
tests. Estimation of differences in compositional analysis, lactic
acid populations, degree of proteolysis, water activity, and pH were
also determined....
Fluctuations in population density of Pratylenchus sp.,
Trichodorus sp., and Xiphinema americanum s. 1. in three blueberry
fields were determined monthly for one year. Pratylenchus densities
were greatest in August and least in October. Three distinct
periods of population growth occurred; during January, April, and
between June and August. Trichodorus...
The strength of both undisturbed and compacted soils from 10 sites
in the slide-prone Tongass National Forest in SE Alaska were studied.
Index property tests were also conducted on disturbed samples. The
index tests included natural water content, Atterberg Limits, specific
gravity of solids, grain size distribution, and moisture-density relationship....
Landslides are frequent in the steep forested regions of the Oregon
and Washington coastal mountain ranges. The need for forest products
has resulted in increasing logging activity in these marginally stable
areas. The occurrence of landslides has increased, which in turn has
focused greater interest in slope stability management.
Of...
An investigation was conducted in 1980 and 1981 on the larval
parasitoid complex of the orange tortrix, Argyrotaenia citrana
(Fern.), a major contaminant in cane fruits (Rubus spp.) in the
Pacific Northwest. A total of 13 parasitoid species were reared from
1,350 larvae predominantly collected from red raspberries in western...
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...
The primary problem of this study was to evaluate the post-high
school plans component of a high school counseling program. The
intent was to determine the effectiveness of the program component in
relation to the purpose it was designed to serve: providing information
and guidance for high school students who...
The purpose of this study was to determine and explain
attitudes toward intercollegiate athletics of undergraduate
students in three academic majors attending Oregon State
University.
The attitudes of a proportionate random sample
consisting of 215 students were measured according to their
responses to thirty-two Likert scale items containing six
sub-scale...
The research reported here was a preliminary study to assess the nature and extent of herbicides leaving the target area in runoff water when these materials are used in container nurseries, and with less emphasis from nurseries growing field stock.
Specific objectives of this study were to:
1) Survey the...
Research was conducted to study the behavior and
load carrying capacity of stump anchors. A field testing
program was undertaken to determine the response and
strength characteristics of second growth Douglas-fir
(Pseudotsuga menziesii) stumps ranging in diameter from
6 to 17 inches. Horizontal and vertical stump movements
due to an...
Why are the fast Fourier transform and the fast
Hadamard transform fast? A transform can be computed by
multiplying a matrix times a vector, which normally requires 0(n²) operations. The matrices corresponding to
these transforms can be rearranged to eliminate redundant
computations resulting in O(nlogn) operations.
We investigate algebraic reasons...
The basic objective of this thesis was to estimate the
economic effects of yield grade standards for carcass beef
on the various market sectors of the Canadian beef industry.
The adoption of the standards was expected to enhance
consumer demand, improve efficiency within the processing
and marketing services sectors, and...
Residual roots from previous stand components are often cited as a major benefit to stump-sprouts of tanoak in southwest Oregon and northern California. Established patterns of belowground carbon allocation and root/shoot maintenance suggest that residual root systems of stumps
will be reduced by carbohydrate depletion and root mortality and by...
The dynamics of stands in the mid-elevation old-growth
Douglas-fir (Pseudotsuga menziesii) forests of the central western
Oregon Cascade Range were investigated using stand structure
analysis. Trees with different growth rates were commonly present
in the same stand, which resulted often in a weak correlation
between tree diameter and age. Thus,...
A tagging study was conducted from June 1978 through January 1982
to provide information on the movements of adult neritic reef fishes
off the central Oregon coast. To evaluate the cause of low tag
returns of previous tagging studies of reef fish in this area, tag
retention, post-tagging mortality, and...
Middle School represents a period of transition for the
students. This transition is present not only in physical change,
intellectual change, and emotional change, but also in terms of
the type of reading instruction these students receive. One
approach to reading instruction moves from a direct approach
focusing on specific...
Detection of L-serine and D,L-alanine by juvenile coho salmon (Oncorhynchus kisutch) was measured in a two-choice Y-trough. Threshold concentration for olfactory
detection of L-serine was 10-8 M for zero-age parr, 1O-7 M for yearling parr, 10-5 M for smolts in late April-early May, and 10-6 M for smolts in June....