Index Catalog // ScholarsArchive@OSU

Theoretical and implementation improvements for difference evaluation functions

Creator:: Colby, Mitchell Kataichi
Abstract:: Multiagent learning with cooperative coevolutionary algorithms is a critical area of research, and is relevant to many real-world applications including air traffic control, distributed sensor network control, and game-theoretic applications such as border patrol. A key difficulty in multiagent learning is the credit assignment problem, where the impact of each...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Mitchell Kataichi Colby

Beta-particle backscatter factors and energy-absorption scaling factors for use with dose-point kernels

Creator:: Mangini, Colby D.
Abstract:: 'Hot particle' skin dosimetry calculations are commonly performed using homogeneous dose-point kernels (DPK) in conjunction with scaling and backscatter models to account for non-homogeneous geometries. A new scaling model for determining the actual DPK for beta-particles transmitted by a high-Z source material has been developed. The model is based on...
Resource Type:: Dissertation
Full Text:: Colby D. Mangini for the degree of Doctor of Philosophy in Radiation Health Physics presented on

A chemical study of the minerals from L-6 chondritic meteorites

Creator:: Curtis, David Ballantyne
Abstract:: 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...
Resource Type:: Dissertation
Full Text:: A chemical investigation of minerals in L-6 chondritic

Response of wheat (Triticum aestivum L.) cultivars and downy brome (Bromus tectorum L.) to metribuzin and ethyl metribuzin

Creator:: Munir, Muhammad
Abstract:: Downy brome (Bromus tectorum. L.), a serious grass weed in eastern Oregon can be partially controlled in wheat by metribuzin [4-amino-6-tertbutyl- 3-(methylthio)-as triazin -5(4H)-one]. However, cultivars of many crops Lave been reported to differ in their level of tolerance to metribuzin. This lack of tolerance has led to the investigation...
Resource Type:: Dissertation
Full Text:: Response of wheat (Triticum aestivum L.) cultivars and downy

Interaction of crop plant population with weed competition in corn (Zea mays L.), bush snap beans (Phaseolus vulgaris L.), and onion (Allium cepa L.) at differing stages of development

Creator:: Williams, Clarence Frank
Abstract:: Yield reductions due to competition of weeds with crop plants can be extremely important. Early weed competition can be as important in reducing crop yield as weed competition for the entire season. The objectives of this study were (1) to determine the weed control achieved by narrow row-cropping patterns, (2)...
Resource Type:: Dissertation
Full Text:: ) Title: INTERACTION OF CROP PLANT POPULATION WITH WEED COMPETITION IN CORN ( Zea mays L. ), BUSH

Production dynamics of a Zostera marina L. bed in Netarts Bay, Oregon

Creator:: Kentula, Mary E.
Resource Type:: Dissertation
Full Text:: Dynamics of a Zostera marina L. Bed in Netarts Bay, Oregon Abstract Approved: C. David Mclntire This

Yellow nutsedge (Cyperus esculentus L.) control with herbicides : the role of tuberization

Creator:: Pereira, Welington
Resource Type:: Dissertation
Full Text:: (Cyperus esculentus L.) Control with Herbicides: The Role of Tuberization. Abstract approved: ' Garvm

Utilization of the Zebrafish Model for Investigating Nitrated Polycyclic Aromatic Hydrocarbon Developmental Toxicity

Creator:: Chlebowski, Anna C.
Abstract:: Polycyclic aromatic hydrocarbons (PAHs) are among the most widely known and studied environmental contaminants, originating from a range of natural and anthropogenic sources. PAHs are known to occur in the environment as complex mixtures, containing both unsubstituted PAHs, as well as a range of PAH derivatives. Among the less-studied of...
Resource Type:: Dissertation
Full Text:: : _________________________________________________________________ Staci L. Massey Simonich Robert L. Tanguay

Unraveling the endogenous functions of the aryl hydrocarbon receptor (AHR) and characterizing a novel long non-coding RNA (slincR) that contributes to AHR-mediated toxic responses in zebrafish

Creator:: Garcia, Gloria R.
Abstract:: The aryl hydrocarbon receptor (AHR) is a ligand activated transcription factor that is a member of the basic helix-loop-helix PER-ARNT-SIM (bHLH/PAS) protein family of cellular sensors. The AHR is conserved across multiple animal phyla and is required for proper vertebrate development. A structurally diverse group of chemicals, including polycyclic aromatic...
Resource Type:: Dissertation
Full Text:: zebrafish Abstract approved: ______________________________________________________ Robert L

Elucidating the Signaling Events Downstream of Aryl Hydrocarbon Receptor Activation in Zebrafish

Creator:: Shankar, Prarthana
Abstract:: All animals have developed the critical ability to detect, respond to, and detoxify a large array of environmental chemicals and stressors that can cause adverse health effects. Important examples of landmark contaminants around the world are polycyclic aromatic hydrocarbons (PAHs) and dioxins, both of which can act via the aryl...
Resource Type:: Dissertation
Full Text:: Abstract approved: _____________________________________________________ Robyn L

ScholarsArchive@OSU

Theoretical and implementation improvements for difference evaluation functions

Beta-particle backscatter factors and energy-absorption scaling factors for use with dose-point kernels

A chemical study of the minerals from L-6 chondritic meteorites

Response of wheat (Triticum aestivum L.) cultivars and downy brome (Bromus tectorum L.) to metribuzin and ethyl metribuzin

Interaction of crop plant population with weed competition in corn (Zea mays L.), bush snap beans (Phaseolus vulgaris L.), and onion (Allium cepa L.) at differing stages of development

Production dynamics of a Zostera marina L. bed in Netarts Bay, Oregon

Yellow nutsedge (Cyperus esculentus L.) control with herbicides : the role of tuberization

Utilization of the Zebrafish Model for Investigating Nitrated Polycyclic Aromatic Hydrocarbon Developmental Toxicity

Unraveling the endogenous functions of the aryl hydrocarbon receptor (AHR) and characterizing a novel long non-coding RNA (slincR) that contributes to AHR-mediated toxic responses in zebrafish

Elucidating the Signaling Events Downstream of Aryl Hydrocarbon Receptor Activation in Zebrafish

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