A five year longitudinal study was begun in 1976 to find a
solution to the problem of early primary children who fail in school
and then adopt the failure syndrome. The study was conducted in four
elementary schools in Oregon which had distinctly different
socio-economic populations.
The tests used for...
Voter preference on the issue of comprehensive land use
planning in Oregon was analyzed through various population
characteristics in order to determine the factors
contributing to public preference in this issue and how they
were distributed spatially. Two statistical models were
developed to analyze the correlations between voting outcome
in...
The tadpoles of several anuran species with groupforming
larvae are relatively unpalatable to many of
their potential predators. To more fully understand the
role of palatability and its relationship to group
formation as an antipredator defense in anuran amphibian
larvae, I investigated the palatabilities of the larvae
of three species...
A parasitic wasp, Trioxys pallidus Haliday
(Hymenoptera: Aphidiidae) was imported from Europe and
initially released against the filbert aphid Mvzocallis
coryli (Goetze) in hazelnut (filbert) orchards of the
Willamette Valley, Oregon beginning in 1984. In the
present study, I investigated the establishment rates of
this parasitoid. A total of 13...
Temperature observations are presented from 4 Aanderaa thermistor chains suspended from a free-floating surface buoy during October-November 1983 near 33.5° N, 126.5° W as part of the Mixed Layer Dynamics Experiment (MILDEX). Each chain contained 11 sensors; the upper two were 30 min length, the lower two were 100 m...
The abundance of the 1982 brood of juvenile coho salmon
(Oncorhynchus kisutch) was determined in August 1983, and January
and April 1984 at 20 study sites spread throughout Knowles Creek,
an Oregon coastal watershed. The timing of emigration of juvenile
coho from the watershed was monitored from October 1983
through...
Lagrangean relaxation is presented as a solution
technique to solve flow constrained area-based harvest
scheduling problems. The best set of multipliers in the
Lagrangean approach is obtained through the subgradient
method. Guidelines to set some parameters to compute the
step size in the subgradient algorithm are provided. An
additional procedure...