Digital Commons Network^™

Growth Media And Lipid Determination Comparison Of High Rate Algae Ponds, Eric Alexander Nicolai

Master's Theses

Growth Media and Lipid Determination Comparison

of High Rate Algae Ponds

Eric Alexander Nicolai

The feasibility of algal biofuel production relies on the use of a non-potable water source. Municipal wastewater is nutrient-rich and a cost effective option as a growth media in algae ponds. However, this resource may be too valuable for algal biomass production, as reclaimed wastewater is needed for surface irrigation and groundwater recharge. This thesis compares the performance of 4.2 m² high rate algal raceway ponds (HRAPs) to 33 m² HRAPs grown on primary settled wastewater during a media recycling study and a growth …

Evaluating Five Years Of Soil Hydrologic Response Following The 2009 Lockheed Fire In The Coastal Santa Cruz Mountains Of California, Mary Theresa Crable

Master's Theses

The Lockheed Fire burned 31 km² (7,660 acres) of the Scotts Creek watershed in August 2009. 4.5 km² (1,100 acres) of California Polytechnic State University’s educational and research facility at Swanton Pacific Ranch. The burned region presented an opportunity for studying the hydrologic response of burned soils in the Santa Cruz Mountains where there is insufficient post-fire studies regarding fire-effects on watershed processes such as infiltration and near-surface runoff. Soil infiltration and soil water repellency were evaluated with rainfall simulations, Mini-disk Infiltrometer (MDI) and water drop penetration time tests (WDPT) at sites represented by variations in burn severity, …

Integration Of Contemporary Artworks Into The Curricula, Jennifer Crawford

Master's Theses

The purpose of this research was to examine arts-integrated lesson plans that use contemporary artworks to promote relevant learning experiences and also develop skills to transfer knowledge from multiple disciplines. The lesson plans examined were from pre-service teachers who enrolled in a methods class, Contemporary Art in Society, at the University of Northern Colorado. The class provided methods and techniques to teachers for creating arts integrated lesson plans from contemporary artworks. The findings of this study showed evidence that the methods used in Contemporary Art in Society to instruct teachers how to use contemporary artworks within arts-integrated lesson plans provided …

Vascular Reactivity In Newly-Formed And Mature Arterialized Collateral Capillaries, Sara K. Hellstrom

Master's Theses

Peripheral arterial occlusive disease (PAOD) is a globally-prevalent cardiovascular disease in which atherosclerotic plaques narrow arterial lumen diameters and restrict blood flow to downstream tissues. The impact of these occlusions can be mitigated by collateral vessels that connect parallel arterial branches and act as natural bypasses to maintain perfusion. In animal models that lack collateral arterioles, capillaries that connect terminal arteriolar segments can arterialize and form functional collaterals following an ischemic event; however, in the early stages of development, vasodilation is impaired. We explored the mechanism of impaired vasodilation in arterialized collateral capillaries (ACCs) and pre-existing collaterals (PECs) by evaluating …

Development Of A Digital Controller For Motor Control Experiments In The Ee472 Lab, Jeffrey David D'Amelio

Master's Theses

A digital motor controller for student lab use is designed, built, and tested. The controller uses an encoder for position measurement, and an H-bridge to drive the electromechanical plant.

A user interface is created to enhance usability of the device. The user interface is able to display key parameters of the control algorithm as well as the state of the system. It is also used to modify the gains and sample rate of the control algorithm.

The design of the system is refined, and 10 units are built for the EE472 Digital Controls Lab. The lab manuals for the first …

Studies To Characterize Heavy Metal Content And Migration From Recycled Polyethyleneterephthalate, Michael John-Ross Whitt

Master's Theses

Packaging Materials account for 31% of the world’s municipal solid waste. Agencies like the Environmental Protection Agency (EPA) and the Agency for Toxic Substances and Disease Registry (ATSDR) are pushing for the increased use of recycled thermoplastic materials. Polyethylene terephthalate (PET) is a commonly recycled thermoplastic which is used to package ready-to-eat fruits and vegetables. Most recycled polyethylene terephthalate (RPET) packaging materials contain heavy metal catalysts, the most common being antimony. The recent increased use of recycled plastic materials has been suspected as the source of increased human heavy metal exposure. In this study, cadmium, chromium, nickel, lead and antimony …

You're A Good Man, Charlie Brown: An Analysis Of Compassion, Friendship, And Overcoming Obstacles, Jessamyn L. Miller

Master's Theses

Since the late 1960s many things have changed. With the inception of the Internet, much of the world has gone viral––including newspapers. Children rarely find the same joy their parents found in a nostalgic printed Sunday morning comic strip. In addition, societal tragedies have increased with almost daily occurrences highlighted on the news. With an influx of recent tragedies too close to home, this thesis examines arts advocacy facts, anti-bulling campaigns, and the themes of friendship, compassion, and overcoming obstacles within a production of Clark M. Gesner’s musical You’re a Good Man, Charlie Brown [Revised]. Charles M. Schulz’s classic characters …

Participatory Democracy In The Chinese Cyber World: Case Studies From Weibo, Duyi Li

Master's Theses

This thesis discusses features of citizen communication on Weibo, the Chinese social media platform, and its relationship to participatory democracy in China. Weibo is a complex social space due to the interplay of different forces and social actors. On the one hand, Weibo provides the space for bottom-up political participation: it expands the horizontal discursive space where plural discourses coexist and interact; provides a social sphere where counter-discourses are created; a space where the culture of resistance is formed; and serves as an alternative source for information. On the other hand, the vertical political control of the state, and the …

The Application Of P-Bar Theory In Transformation-Based Error-Driven Learning, Bryant Harold Walley

Master's Theses

In P-bar Theory, Perkins et al. (2014) proposed a rule based method for determining the context of a partext (i.e., a part of a text document).

In Transformation-Based Error-Driven Learning and Natural Language Processing: A Case Study in Part-of-Speech Tagging Brill (1995) demonstrates a method of error-driven learning applied to individual words at the sentence level to determine the part of speech each word represents.

We combine these two concepts providing a transformation-based error-driven learning algorithm to improve the results obtained from the static rules Perkins proposed and determine if the rule order prediction will provide additional metadata.

An Evaluation Of Metric Methods Of Race Differentiation In The Human Pelvic Girdle For The Application Of Expert Witness Testimony, Laura Natalie Yurka

Master's Theses

Research has shown that measurements from the pelvic bones and femur can be utilized for race estimation when the skull is absent or damaged. The literature reported levels up to 95% accuracy when utilizing discriminant function analysis to simultaneously classify race and sex. This research examined the previously reported methods of race estimation within the evidence standards for forensic science as well as current statistical standards. New metric measurements from the pelvis and femur were also proposed and tested to assess their utility as race indicators. Finally, this research addressed concerns that skeletal collections like the Robert J. Terry Skeletal …

Intimate Partner Violence: Domestic Violence Service Providers' Perceptions Of Male Victims, Bradon Allan Valgardson

Master's Theses

Intimate partner violence (IPV) against women has been recognized as a serious issue which requires attention. Over the past 40 years there has been an increase in sensitivity to female victims of intimate partner violence, but the same has not been true for male victims. This may be attributed to the substantial influence the feminist perspective has had upon the development of the IPV resource system. Furthermore, certain research indicates IPV resource centers may refuse to help or demean men who seek assistance as victims (Hines, Brown, & Dunning, 2007).

This research project surveyed domestic violence resource centers in an …

Dialect Use Within A Socially Fluid Group Of Southern Resident Killer Whales, Orcinus Orca, Courtney Elizabeth Smith

Master's Theses

Resident killer whales, Orcinus orca, of the Northeastern Pacific form stable kinship-based matrifocal associations and communicate with group-specific repertoires of discrete calls (dialects) that reflect these associations. The gradual fission of matrilines is usually consistent with dialect variations among groups that may manifest as differences in call usage at the repertoire level or subtle structural differences of the calls themselves. Therefore, matrilines that are more closely related tend to be more acoustically similar. Within the endangered community of Southern Resident killer whales (SRKWs), recent evidence shows that one particular group (L pod) exhibits the lowest rate of intrapod association …

A Phenological Study Of Bat Communities In Southern Mississippi Caves, Zachary Uriah Roth

Master's Theses

Mississippi is generally not known for its caves, and consequently its cave flora and fauna remain largely unstudied. From fall 2010 to winter 2013, we studied the bat populations in the three largest caves in Mississippi. The most common (and only) species found in these caves were Myotis austroriparius and Perimyotis subflavus. I collected monthly data on the number of bats per species, behaviors and locations of the bats within the caves, as well as atmospheric data at selected positions within each cave. All three caves were found to have significant temperature differences between seasons (winterPerimyotis subflavus was found …

Approximation Of The Scattering Amplitude Using Nonsymmetric Saddle Point Matrices, Amber Sumner Robertson

Master's Theses

In this thesis we look at iterative methods for solving the primal (Ax = b) and dual (A^T y = g) systems of linear equations to approximate the scattering amplitude defined by g^Tx =y^Tb. We use a conjugate gradient-like iteration for a unsymmetric saddle point matrix that is contructed so as to have a real positive spectrum. We find that this method is more consistent than known methods for computing the scattering amplitude such as GLSQR or QMR. Then, we use techniques from "matrices, moments, and quadrature" to compute the scattering amplitude …

The Conservation Genetics Of Two Emydid Turtles: Emydoidea Blandingii And Malaclemys Terrapin, Charlotte Lizana Petre

Master's Theses

Conservation of turtles is complicated by their sensitivity to habitat degradation and overexploitation. I used microsatellites and standard population genetic analyses to explore genetic diversity, population structure, paternity and demographic history in two emydid turtles that are currently experiencing threats to their survival. The Blanding’s turtle, Emydoidea blandingii, has experienced habitat fragmentation throughout its range, and this study focuses on a population in Massachusetts where hatchlings from one population are being translocated to establish a new population. I found evidence of multiple paternity within clutches and found no significant reduction in genetic diversity when comparing the source population and …

A Novel Method For Confirming The Presence Of Volatile Reduced Sulfide Compounds Via Inductively Coupled Plasma-Optical Emission Spectroscopy, Krystal Lynne Parker

Master's Theses

Millions of dollars in destruction in the past decade have resulted from the use of Chinese drywall in homes. There are also potential health hazards related to this corrosive material. As such, it is important to find a way to identify Chinese drywall. Drywall can be tested for certain markers, such as strontium, sulfur, and carbonates to identify it as corrosive Chinese drywall. The laboratory preparation and analysis should be efficient and cost effective. The methods previously used, such as an X-ray fluorescence gun have had issues with getting a proper reading due to the layers of other materials found …

The Effects Of The Tootling Intervention Using Daily Reinforcement, Melissa Bryanne Mchugh

Master's Theses

The current study was designed to replicate and extend the literature on the effectiveness of a classroom intervention known as Tootling (Skinner, Skinner, & Cashwell, 1998) in decreasing disruptive classroom behavior as well as increasing academically engaged classroom behavior. Tootling is a strategy that encourages and prompts students to report instances of their peers’ positive behaviors. Thus far, only three studies have utilized direct observation data for disruptive behavior during Tootling (Cihak, Kirk, & Boon, 2009; Lambert, 2012, 2014). To extend the research on Tootling, direct observation data of disruptive and academically engaged behaviors were collected on both entire classes …

One Big Puzzle, Two Thousand Tiny Pieces: An Analysis Of The Juvenile Remains From The Shady Grove Ossuary, Jaimie Arlene Ide

Master's Theses

This thesis is an inventory and analysis of the juvenile remains excavated in 2010 from a Middle Mississippian ossuary at the Shady Grove site (22QU525), located in the Mississippi Delta. This project presents a clear challenge given the commingled and incomplete nature of the sample, as well as the preservation biases associated with subadult material, but this research offers valuable insight into the demographic pattern of the larger population at the site, as well as the mortuary practices which created the ossuary at Shady Grove. A “bone-by-bone” inventory revealed the presence of 43 juvenile individuals between the ages of 0 …

Eating, Feeding, And Weight In Early Childhood: Investigation Of Child Eating Behaviors And Maternal Feeding Style As Influences On Preschoolers' Body Mass Index, Maren Elizabeth Hankey

Master's Theses

Research investigating determinants of obesity risk during early childhood highlights the role of children’s eating behaviors as well as food-related parenting practices. Compared with the vast literature on parent feeding practices, little is known regarding parent feeding styles, and the mechanisms through which child eating behaviors and parent feeding styles influence child body mass index (BMI) remain poorly understood. The current study addressed this gap in the literature by a) describing the prevalence and correlates of parent feeding styles in a sample of mothers residing in the southern United States and b) exploring associations among child eating behaviors, parent feeding …

Land Owners And Law Givers: Relations Between Yeomen And Planters In The South Carolina Back Country During The Early Republic, 1790-1830, Kevin Caldwell Grubbs

Master's Theses

The society that fought the Civil War in the 1860s was slowly created through years of class conflict and cooperation between planters and yeoman farmers. The South Carolina backcountry developed during the decades of the Early Republic, reacting to the formative events of the nation during that time, such as the Second Great Awakening, the market revolution, and the War of 1812. The difficulties of these events necessitated new approaches to life in South Carolina. Over time, the new society spread from the eastern seaboard states across the South, forming the regional southern society.

Mapping The Distribution Of Barrier Island Slash Pine Woodland And Determining Growth Responses Of Pinus Elliottii To Hurricane Katrina (2005) On Cat Island, Mississippi, William Richard Funderburk

Master's Theses

Barrier islands are ubiquitous features along the Atlantic and Gulf of Mexico North American coastline and are subjected disturbances such as extreme episodic events. The wind, waves, and storm surges of Hurricane Katrina heavily impacted the Mississippi–Alabama barrier island chain on August 29, 2005. Cat Island experienced a 7-m storm surge, the highest wind energy in the chain, but was estimated to have the least amount of forest mortality. The purpose of this study was to investigate the distribution of Pinus elliottii on Cat Island Mississippi and evaluate relationships of elevation with mean radial growth rate (mm y ̄ ˡ), …

The Drosophila T-Box Transcription Factor Midline Functions Within The Insulin/Akt And C-Jun-N-Terminal Kinase Signaling Pathways To Regulate Interomatidial Bristle Formation And Cell Survival, Qichuan Chen

Master's Theses

From a genetic and allelic modifier screen, we report that the Drosophila melanogaster T-box transcription factor midline (mid), a homolog to the human TBX20 gene, interacts with dFOXO within the insulin receptor (InR) and the c-Jun-N-terminal kinase (JNK) signaling pathways to regulate interommatidial bristle (IOB) formation. Previous studies have identified mid’s role in cell fate specification of sensory organ precursor cells in conjunction with the Notch-Delta signaling pathway (Das et al., 2013). The Notch, InR, and JNK signaling pathways regulate dFOXO activity under conditions of stress. Thus, we determined the effects of oxidative stress and metabolic stress by …

Exploring The Glucocorticoid Actions Of 1Α-Hydroxycorticosterone (1Α-Oh-B) In The Elasmobranch Fishes, Faith Nichole Lambert

Master's Theses

The corticosteroid 1α-hydroxycorticosterone (1α-OH-B) is unique to the elasmobranch fishes. It is thought that 1α-OH-B acts as both the primary glucocorticoid (GC) and mineralocorticoid (MC) in these fishes, a dual role analogous to that of cortisol in the teleost fishes. The MC characteristics of 1α-OH-B are well supported, but data supporting its GC functions are lacking. In this study, the putative GC actions of 1α-OH-B were examined. The first experiment characterized the physiological stress response of the Atlantic stingray (Dasyatis sabina) to air exposure, with particular regards to the roles of corticosteroids and metabolic fuels. Results demonstrate that …

Using Spectral Analysis To Evaluate Flute Tone Quality, Ron Yorita

Master's Theses

Many skilled flutists place a high priority on "good" tone quality, or timbre. Timbre can be defined as the audible difference in character that a listener perceives for two notes played at the same pitch. Different timbres are determined by the combination and balance of harmonics that comprise a note. Unlike pitch and rhythm, timbre is difficult to objectively quantify. This project explores (1) how tone quality is described by skilled flutists, (2) whether the harmonic spectrum has some correlation with tone quality, (3) whether certain harmonic spectra are preferred, or considered "good".

Thirty-one flutists ranging from high school students …

The Effect Of Artery Bifurcation Angles On Fluid Flow And Wall Shear Stress In The Middle Cerebral Artery, Zachary Ramey Jones

Master's Theses

Saccular aneurysms are the abnormal plastic deformation of veins and arteries that can lead to lethal thrombus genesis or internal hemorrhaging. Medication and surgery greatly reduce the mortality rates, but treatment is limited by predicting who will develop aneurysms. A common location for saccular aneurysm genesis is at the main middle cerebral artery (MCA) bifurcation. The main MCA bifurcation is comprised of the M1 MCA segment, parent artery, and two M2 segments, daughter arteries. Studies have found that the lateral angle (LA) ratio of the MCA bifurcation is correlated with aneurysm formation. The LA ratio is defined as the angle …

A Novel Dual Modeling Method For Characterizing Human Nerve Fiber Activation, Frank Daniel Sugden

Master's Theses

Presented in this work is the investigation and successful illustration of a coupled model of the human nerve fiber. SPICE netlist code was utilized to describe the electrical properties of the human nervous membrane in tandem with COMSOL Multiphysics, a finite element analysis software tool. The initial research concentrated on the utilization of the Hodgkin-Huxley electrical circuit representation of the nerve fiber membrane. Further development of the project identified the need for a linear circuit model that more closely resembled the McNeal linearization model augmented by the work of Szlavik which better facilitated the coupling of both SPICE and COMSOL …

Microcosm Study Of Natural Attenuation, Biostimulation, And Bioaugmentation Of Soils Contaminated With Pcbs, Dioxins, Pahs, And Petroleum Hydrocarbons, Mackenzie L. Billings

Master's Theses

Remediation of weathered petroleum hydrocarbons, polycyclic aromatic hydrocarbons (PAHs), dioxins, and polychlorinated biphenyls (PCBs) through monitored natural attenuation, in-situ biostimulation, and/or bioaugmentation was assessed using laboratory-scale microcosms. These contaminants of interest (COIs) have persisted in Santa Susana Field Laboratory (SSFL) soils for over 40 years in some cases. The objective of this United States Department of Energy (DOE)-funded study was to determine the potential of the aforementioned remediation methods to reduce COI concentrations in soil and estimate potential biodegradation rates of COIs in SSFL soils.

Several types of soil microcosms were established: one set of microcosms was run without amendments …

Investigation Of Dairy Wastewater Using Biowish, Ada Mingwah Chan

Master's Theses

Various bacterial products from BiOWiSH^TM Technologies have been tested in dairy wastewater experiments to determine the bacterial mixes’ ability for enhanced degradation of biochemical oxygen demand (BOD), solids, and nitrate concentrations. The dairy wastewater was augmented with various bacterial composition obtained from BiOWiSH^TM. The bacterial mixes experimented were US Aqua, Thai Aqua, BMT, Osprey, Fruit Wash, KLB, LCM1, and MDG. Method development was a crucial process to optimize and test the effects of the BiOWiSH^TM Technologies bacterial mixes.

After 5 experiments, the BOD tests showed that for some of the tests, the redosage of bacteria helped …

Experiment And Simulation Of The Acoustic Signature Of Fatigued-Cracked Gears In A Two-Stage Gearbox, Matthew James Ostiguy

Master's Theses

This thesis focuses on the development of a health monitoring system for gearbox transmissions. This was accomplished by developing and understanding a two-stage gearbox computer model that emulates an actual gearbox test rig. The computer model contains actual gearbox geometry, flexible shafts, bearings, gear contact forces, input motor torque, output brake torque, and realistic gearbox imbalance. The gear contact force of each gear stage and the input bearing translational acceleration were the main outputs compared between a healthy gearbox and damaged gearbox computer model. The damage of focus was a fatigue crack on the input pinion gear. A sideband energy …

The Effects Of Atomic Oxygen On The Outgassing Properties Of Spacecraft Materials, Eli Z. Gurnee

Master's Theses

The space environment contains many harsh characteristics that are harmful to spacecraft and threaten the success of space missions. Atomic oxygen (AO) and outgassing are among the chief concerns that spacecraft engineers must design for in order to ensure the safety of a spacecraft. AO is monatomic oxygen (O1) that is created when Ultraviolet (UV) radiation photochemically disassociates diatomic oxygen (O2) in space. AO is the dominant atmospheric constituent between 175 and 600 km, and is a great concern in low earth orbits. Orbital AO has an average impact energy of 4.5 ± 1 eV with orbiting spacecraft and is …