Index Catalog // ScholarsArchive@OSU

Development of a singulation device for stonefly larva

Creator:: Williams, Kate S. (Kate Shreeve)
Abstract:: Population counts of aquatic insects can be a credible indicator of the overall health of a waterway. Stonefly (Plecoptera) larva are very sensitive to chemicals present within the waterway, however obtaining population counts of the larvae can be very labor intensive and thus costly. The BugID project has been working...
Resource Type:: Masters Thesis
Full Text:: then using a pump moved down the channel. The brush in the channel is used to de-tangle the

Connections between combinatorics of permutations and algorithms and geometry

Creator:: Wills, Dean Connable
Abstract:: Geometric Problems become increasingly intractable and difficult to visualize as the number of dimensions increases beyond three. Inductions from lower dimensional spaces are possible yet often awkward. This thesis shows how elementary linear algebra, vector calculus, and combinatorics offer improved methods for calculating the dihedral angles of n-simplicies and proving...
Resource Type:: Dissertation
Full Text:: dn indicate the number of possible derangements of n letters.The first few de- rangements are easily

A study of adiabatic and diabatic flow boiling in parallel microchannels and fractal-like branching microchannels

Creator:: Daniels, Brian J.
Abstract:: A one-dimensional numerical model has been developed to study diabatic and adiabatic flow boiling in microchannels. This model accounts for developing flow effects and variable property effects. The model uses correlations for void fraction and two-phase multipliers found in the literature. The model has been used to study the performance...
Resource Type:: Dissertation

Micro adiabatic combustion engine : concept development, simulation and combustion experiments

Creator:: Chewning, Scott R.
Abstract:: The current proliferation of portable electronic devices for personal communication, business and entertainment has created a demand for high energy density power supplies. A hydrocarbon fuel with a conversion efficiency of over 15% can provide greater energy density than current battery technology for these applications. Current micro-scale heat engines do...
Resource Type:: Masters Thesis

Renewal risk processes with stochastic returns on investments : a unified approach and analysis of the ruin probabilities

Creator:: Constantinescu, Corina D.
Abstract:: This thesis considers one of the classical problems in the actuarial mathematics literature, the decay of the probability of ruin in the collective risk model. The claim number process N(t) is assumed to be a renewal process, the resulting model being referred as the Sparre Andersen risk model. The inter-claim...
Resource Type:: Dissertation
Full Text:: to Professor Roland DeSzoeke for his unyielding support during the final stages of the defense

Long-term momentum and heat balances and turbulent mixing in the upper equatorial Pacific Ocean

Creator:: Luan, Shusheng
Resource Type:: Dissertation

Quantifying linear disturbance growth in periodic and aperiodic systems

Creator:: Wolfe, Christopher Lee
Abstract:: The mathematical and physical connections between three different ways of quantifying linear predictability in geophysical fluid systems are studied in a series of analytical and numerical models. Normal modes, as they are traditionally formulated in the instabilities theories of geophysical fluid dynamics, characterize the asymptotic development of disturbances to stationary...
Resource Type:: Dissertation
Full Text:: , Robert Miller, Roland deSzoeke, and Solomon Yim, for taking the time to attend multiple events and

Survey of isotope ratios in the near coastal outflow of the Columbia River

Creator:: Dolan-Caret, Amari
Abstract:: This report details ocean water salinity and stable isotope measurements (deuterium (D) and 18O) in water collected from April 17 2018 to April 21 2018 in the coastal waters of Oregon, USA. Measurements were made from surface, ship flow-through, and CTD rosette bottle samples collected as part of a student-led...
Resource Type:: Capstone Project
Full Text:: Niezgoda, Kaleb Horlick and Dr. David Noone. Dr. Simon de Szoeke provided assistance and expertise for

Evaluation of techniques for on-farm monitoring of percolation and irrigation system performance

Creator:: Louie, Michael J.
Abstract:: Efficient use of water in agricultural production involves accurate assessment and control of the quantity and spatial uniformity of excess percolation. Passive Capillary Samplers (PCAPS), which sample water from the vadose zone have shown potential to provide superior estimates of soil water flux compared to alternative methods. In a four-year...
Resource Type:: Masters Thesis
Full Text:: , and my committee members Dr. Richard Cuenca, Dr. Marshall English, and Dr. Roland De Szoeke. Their

Vertical Structure of the Lower Troposphere in a Changing Arctic

Creator:: Watkins, Daniel M.
Abstract:: The Arctic climate system is changing dramatically as a response to rising atmospheric greenhouse gas concentrations. Key indicators of Arctic change include thinning and retreating of Arctic pack ice, thawing permafrost, greening tundra, and rising surface temperatures. The structure of the atmospheric boundary layer influences and is influenced by processes...
Resource Type:: Dissertation
Full Text:: many interesting tangential discussions. To Eric Skyllingstad, Simon de Szoeke, and Justin Wettstein

ScholarsArchive@OSU

Development of a singulation device for stonefly larva

Connections between combinatorics of permutations and algorithms and geometry

A study of adiabatic and diabatic flow boiling in parallel microchannels and fractal-like branching microchannels

Micro adiabatic combustion engine : concept development, simulation and combustion experiments

Renewal risk processes with stochastic returns on investments : a unified approach and analysis of the ruin probabilities

Long-term momentum and heat balances and turbulent mixing in the upper equatorial Pacific Ocean

Quantifying linear disturbance growth in periodic and aperiodic systems

Survey of isotope ratios in the near coastal outflow of the Columbia River

Evaluation of techniques for on-farm monitoring of percolation and irrigation system performance

Vertical Structure of the Lower Troposphere in a Changing Arctic

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