The objective of the thesis is to present data upon which the management of the Oregon otter-trawl fishery can be based. In addition, a history of the Oregon trawl fishery is presented. A summary of gear development by many of the vessels in the Oregon fleet is presented in table...
The effects of boundary geometry on internal density currents
in a density stratified reservoir were investigated in a laboratory
model. When water was simultaneously withdrawn and admitted to
the reservoir, a complex current regime was established. The general
flow pattern is described, and the influence of physical variables
on the...
Re searchers have long tried to correlate weather factors with plant disease occurrences. However, inconclusive results have usually been obtained because most plant diseases have biologic as well as climatic optimums.
In this study, thirty weather variables were correlated, by the stepwise regression method in a computer, to the amount...
The land tenure system in the United States contains a variety
of tenure types. A major characteristic of this tenure system is the
continual change of tenure types within a given region. As these tenure
types change, problems of a cultural, economic, and legal nature
are created and interact with...
This study traces the historical foundations of the concept of
constant ionic proportionality and the equation (Salinity [S%₀] = 1.805
Chlorinity [Cl%₀] + 0.030) which has been in general use in oceanography
since 1902 until 1969 and which is based upon this constancy,
The notion that the constituents present in...
A gene-ecological transplant study was made on populations of
the Crepis nana and C. elegans complex from the Arctic and Alpine of
North America. Transplants were collected from the Brooks Range,
Eagle Summit, and Alaska Range in Alaska, the Rocky Mountains in
Alberta, the Olympic Mountains in Washington, the Wallowa...
Nine Gray Podzolic soils from different physiographic regions
of Thailand were studied to determine their characteristics and
genesis in relation to their parent materials, land form, pedogenic
environment, classification and management. The clay was characterized
by X-ray diffraction and standard chemical and physical
analyses were performed. Mineralogy of the light...
The Purposes of the Study
The primary purpose of this study was to identify common professional
education competencies needed by public school district
vocational education leaders. Other purposes were to (1) determine
if significant differences existed in vocational education leadership
competencies among respondents as categorized by state, type of
position...