Improving the methods used for the detection and estimation of fissile material mass content is essential to nuclear security and safeguards to ensure special nuclear material (SNM) accountability, control, safety and security. With the continued expansion of the nuclear industry and the need for safe management of spent fuel, improving...
Confidentiality as a group norm and how it affected self-disclosures
in personal growth groups were compared between control and
treated groups. The sample consisted of 53 students enrolled in a
graduate level group counseling course. The students were randomly
assigned to six groups: three control and three experimental groups.
Each...
This study examines the effect of mood and fairness
of treatment on children's generosity toward peers.
Thirty-one third and nineteen fourth grade males participated.
A positive or negative mood was induced using
recorded stories. Each child then played a ring toss
game for which he had been promised a certain...
Thin foil samples of special nuclear materials (SNMs) were irradiated for 60s using a Mark TRIGA II reactor, and their associated gamma emissions were recorded with a count time of 60s following irradiation. A rapid pneumatic transfer system was used to irradiate the samples in front of beam port #4....
Following thermal neutron induced fission, supervised machine learning and temporal gamma-ray spectroscopy methods were used to identify differences in the delayed gamma-ray spectra of Pu-239 and U-235. The temporal gamma-ray spectroscopy method takes advantage of the time-dependent decay of fission products. Employing Spearman's rank-order correlation coefficient and without prior knowledge...
Adolescent pregnancy is a major social problem which results in negative psychological, medical, developmental,
economic and educational consequences for both mother and child. A review of the literature examined psychological and sociocultural factors and negative consequences associated with adolescent pregnancy. There has been little research on age specific differences between...
Greater sage-grouse (Centrocercus urophasianus) populations declined range wide during the past 50 years. Grouse populations were 2-3 times larger than the current population as recently as the early 1970's. In addition to habitat loss and fragmentation, declines were attributed habitat degradation that caused reduced productivity. Because chick survival remains the...
This thesis describes the chemical investigation of marine cyanobacteria collected in Madagascar and Panama with an emphasis on the isolation and structure elucidation of medicinally relevant secondary metabolites.
A collection of the marine cyanobacterium Lyngbya majuscula from the Radames Islands, Madagascar yielded two new cyclic depsipeptides, radamamides A and B,...
Resident and migratory avifauna in the Willamette Valley, Oregon are heavily influenced by winter conditions and habitat characteristics, especially those of wetlands. As such, it is important to monitor avian communities and environmental factors at wetland sites within the Willamette Valley during winter. Using data from standardized avian point-count surveys,...
The purpose of the study was to determine whether first-grade
children's participation in a counselor-led intervention strategy, Mother-Child
Communication Training (MCCT), would increase their responsible
behavior, as assessed by mothers and teachers. Sixty first-grade children
in one elementary school in Corvallis, Oregon, along with their mothers,
participated in the training...