A common problem in postal surveys of human populations
arises when some of the sampled people fail to respond to the questionnaire.
The problem is that the answers provided by the respondents
may not be typical of the answers the nonrespondents would
provide if these had been solicited more successfully....
A Bayesian approach to the analysis of a two-phase linear
regression model is given. It is assumed that the regression model is
continuous at the change point. The likelihood function is expressed
in a form which explicitly contains the continuity restriction. The
natural conjugate prior distribution for the likelihood function...
The primary purpose of this investigation was to determine the
conditions necessary for the preparation of cell-free extracts of
nodule bacteroids capable of catalysing the reduction of acetylene to
ethylene and nitrogen to ammonia. Initial investigations were conducted
to determine whether intact soybean root nodules would reduce
acetylene to ethylene...
This thesis research consists of an investigation of the human
influences on wildlife in Belize. The study was accomplished by the
collection and analysis of data with respect to land use, habitat
characteristics, and wildlife status in Belize. Requirements and
status of many species are tabulated in order to give...
Caurinus dectes Russell is a minute, brachypterous scorpionfly
which was discovered at Marys Peak, Benton County, Oregon, in
1976, and subsequently described as the only representative of the
subfamily Caurininae within the Boreidae (snow scorpionflies).
Caurinus dectes is now known to range from the Olympic Peninsula
and Northern Cascades in...
Biological studies were conducted on a histozoic myxosporidan
Myxobolus insidiosus (Wyatt and Pratt, 1963) from the musculature of
Oncorhynchus tshawytscha (Walbaum). This organism is known to
occur in spring chinook salmon in Oregon and coho salmon O. kisutch
(Walbaum) in Washington. In addition Myxobolus kisutchi (Yasutake
and Wood, 1957) was...
This report summarizes the results of a field study of a population
of the Pacific mountain beaver, Aplodontia rufa pacifica, from
August 1965 through August 1967. The study site consisted of a 13. 5-
acre grid on a logged over area in the Coast Range Mountains of
Benton County, Oregon....
Ashlock (1975) identified career education descriptive
factors as related to eight content areas of the Theory and
Practicum II program at Oregon State University. Based on
this research and the research literature, a Career Education
Competency-Based Instructional Model was devised. By
modifying the curriculum, this career education conceptual
model for...
Major and minor minerals have been separated from
three L-6 chondritic meteorites (Alfianello, Colby (Wisconsin),
and Leedey). Olivine, hypersthene, diopside, feldspar,
troilite, chromite, phosphate minerals, and metallic
minerals were analyzed for major, minor and trace elements
using instrumental neutron activation analysis and radiochemical
neutron activation analysis techniques. Concentrations
df the...
The Brassicaceae, Mustard Family, is a well marked natural
family, whose tetramerous flowers, tetradynamous stamens, and
distinctive bi- carpellary fruits, clearly distinguish it from related
families. It is a large family of some 3, 000 recognized species and
over 300 genera. Although numerous attempts have been made over
the past...
Detailed phytosociological and physical data were gathered from six grass-fern balds in the Oregon Coast Range, Monmouth Peak, Grass Mountain, Prairie Peak, Roman Nose Mountain, Tyee Mountain, and Saddle Mountain. Panchromatic and color infrared air photography guided sampling within individual balds. The resultant floristic data was manipulated by a Braun-Blanquet...
In response to the growing preference for the small family, this study was carried cut to acquire information about women who expect zero, one, or two children. The purposes of the study were: to identify the cultural and socioeconomic characteristics of these women; and to determine which of these characteristics...
This study was concerned with the effect of additional time in
health instruction for 9th graders at the junior high school level.
A 120-item questionnaire, developed after extensive review of related
tests, was mailed to a jury of ten health subject matter experts.
The evaluations of all the items made...
The purpose of this study was to determine the effectiveness of an in-service project for teachers of the social studies (K-12). The project was sponsored by the Region II Committee of the Oregon Council for Curriculum and Instruction (O.C.C.I.) during the period from November 1, 1966 to April 1, 1969....
The purpose of this study was to compare and evaluate personal
attitudes and perceptions, educational and vocational plans, activities
and satisfaction among students of two basic groups selected for the
study: a) financial aid recipients, b) non-financial aid recipients.
Subgroups in each category consisted of over-achievers and under-achievers.
Over-achievers were...