Index Catalog // ScholarsArchive@OSU

An Evaluation of the Effects of Hatchery and Management Practices on Geomagnetic Orientation Behavior in Juvenile Pacific Steelhead Trout (Oncorhynchus mykiss)

Creator:: Scanlan, Michelle M.
Abstract:: Numerous populations of salmon and trout undergo extensive migrations, migrating from freshwater to the sea and throughout ocean basins. Years later they return to their natal streams with remarkable accuracy and precision. The outward migration is accomplished without the benefit of following experienced migrants or prior individual experience. Evidence suggests...
Resource Type:: Masters Thesis
Full Text:: . CONTRIBUTION OF AUTHORS Dr. David Noakes, Dr. Nathan Putman, and Dr. Tom Quinn contributed to the

Magnetic map in nonanadromous Atlantic salmon

Creator:: Scanlan, Michelle M., Putman, Nathan F., Pollock, Amanda M., and Noakes, David L.
Abstract:: Long-distance migrants, including Pacific salmon (Oncorhynchus spp), can use geomagnetic information to navigate. We tested the hypothesis that a “magnetic map” (i.e., an ability to extract positional information from Earth’s magnetic field) also exists in a population of salmon that do not undertake oceanic migrations. This study examined juvenile Atlantic...
Resource Type:: Article

Using Culture-independent Genomics as a Means for Understanding Chlamydial Biology

Creator:: Putman, Timothy E.
Abstract:: The chlamydiae are a family of obligate intracellular bacteria that have a unique bi-phasic developmental cycle, unique cellular properties, and a unique set of challenges to studying its biology. While genetic manipulation is becoming routine in Chlamydia, there are significant challenges to working with this intracellular parasite. The body of...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Timothy E. Putman for the degree

Enhancing Facial Recognition: A Comparative Analysis of Image Preprocessing Techniques in PCA, KL Expansion and SVD

Creator:: Tuffour, Prince A.
Abstract:: Facial recognition has become increasingly important in recent years, due to the wide range of applications it has in fields such as security, surveillance, and human-computer interaction. Three popular methods for facial recognition are the Principal Component Analysis (PCA), Karhunen-Loeve Expansions, which is fundamentally a continuous form of PCA but...
Resource Type:: Capstone Project
Full Text:: each image. Stacking each column vector side by side, we form the matrix F = [A1|A2|...|AM ] (19

Geomagnetic field influences upward movement of young Chinook salmon emerging from nests

Creator:: Putman, Nathan F., Scanlan, Michelle M., Pollock, Amanda M., O'Neil, Joseph P., Couture, Ryan B., Stoner, Joseph S., Quinn, Thomas P., Lohmann, Kenneth J., and Noakes, David L.
Abstract:: Organisms use a variety of environmental cues to orient their movements in three-dimensional space. Here, we show that the upward movement of young Chinook salmon (Oncorhynchus tshawytscha) emerging from gravel nests is influenced by the geomagnetic field. Fish in the ambient geomagnetic field travelled farther upwards through substrate than did...
Resource Type:: Article

Optimization under Uncertainty of a Magnetohydrodynamics Generator

Creator:: Rajbhandari, Evan
Abstract:: Within this dissertation, we develop tools and techniques to demonstrate the feasibility of real-time optimization of a magnetohydrodynamics generator. To ease computational complexity, we work on the kinematic magnetohydrodynamic system, prescribing the ﬂuid-ﬂow and model the material response of the system through an updated Generalized Ohm’s law. We focus on...
Resource Type:: Dissertation
Full Text:: Uncertainty of a Magnetohydrodynamics Generator Abstract approved: Nathan L. Gibson Within this

Modeling of Power Efficiency in a Magnetohydrodynamic Generator

Creator:: Redle, Michael T.
Abstract:: The introduction of an Magnetohydrodynamic (MHD) generator in coal or natural gas energy plants could significantly increase the efficiency by converting kinetic and thermal energy of the combustion exhaust to electrical energy by the generation of a Faraday and Hall current. The traditional MHD system was transformed into a simplified...
Resource Type:: Honors College Thesis
Full Text:: : Modeling of Power Efficiency in a Magnetohydrodynamic Generator Abstract approved: Nathan L. Gibson The

Bioactivity Screening and Gene Activation Strategies in Fungi

Creator:: Coddington, Nathan C.
Abstract:: Natural products from plants, bacteria, and fungi play an important role in society. Over the last 35 years, natural products and their derivatives have inspired over 60% of all FDA approved small-molecule drugs, and are among the top prescribed therapeutics.1-2 Fleming’s discovery of the fungal antibiotic penicillin started the “Golden...
Resource Type:: Honors College Thesis
Full Text:: Strategies in Fungi By Nathan Charles Coddington A PROJECT Submitted to

Compatible Discretizations for Maxwell's Equations with General Constitutive Laws

Creator:: McGregor, D. A.
Abstract:: In this thesis we construct compatible discretizations of Maxwell's equations. We use the term compatible to describe numerical methods for Maxwell's equations which obey many properties of vector Calculus in a discrete setting. Compatible discretizations preserve the exterior Calculus ensuring that the divergence of the curl and the curl of...
Resource Type:: Dissertation
Full Text:: Nathan L. Gibson In this thesis we construct compatible discretizations of Maxwell’s equations. We use

Stochastic and Numerical Analysis for Optimization Problems

Creator:: Jiang, Huanqun
Abstract:: There are three chapters of manuscripts in this dissertation and all of them are talking about a speciﬁc theme: stochastic control, but with completely diﬀerent perspectives. In the ﬁrst manuscript, we solve the optimal barrier strategy for dividend distribution in a complicated Lévy system. In this system, the capital of...
Resource Type:: Dissertation
Full Text:: Numerical Analysis for Optimization Problems Abstract approved: Edward C. Waymire Nathan L. Gibson There

ScholarsArchive@OSU

An Evaluation of the Effects of Hatchery and Management Practices on Geomagnetic Orientation Behavior in Juvenile Pacific Steelhead Trout (Oncorhynchus mykiss)

Magnetic map in nonanadromous Atlantic salmon

Using Culture-independent Genomics as a Means for Understanding Chlamydial Biology

Enhancing Facial Recognition: A Comparative Analysis of Image Preprocessing Techniques in PCA, KL Expansion and SVD

Geomagnetic field influences upward movement of young Chinook salmon emerging from nests

Optimization under Uncertainty of a Magnetohydrodynamics Generator

Modeling of Power Efficiency in a Magnetohydrodynamic Generator

Bioactivity Screening and Gene Activation Strategies in Fungi

Compatible Discretizations for Maxwell's Equations with General Constitutive Laws

Stochastic and Numerical Analysis for Optimization Problems

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