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...
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...
Equipment for strip-till planting is under development in wheat-fallow
rotations in the Columbia Basin of Oregon. This involves the
absence of tillage during the fallow season. At planting time, the
strip-till planter creates a narrow band into which the wheat seed is
placed. The area between the rows is undisturbed...
Time-course growth chamber studies were conducted on little mallow
(Malva parviflora L.) to determine whether sublethal doses of lactofen
(1'-(carboethoxy)ethyl-5-[2-chloro-4-(trifluoromethyl) phenoxy]-2-
nitrobenzoate) would enhance uptake of glyphosate (N'-(phosphonomethyl)
glycine) by altering membrane permeability. Lactofen-induced membrane
peroxidation was determined by harvesting leaf discs, measuring stress
ethylene evolution, and recording increases in...
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...
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 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...