Digital Commons Network^™

Youth Sport Development Pathways And Experiences Of Ncaa Division I Women's College Soccer Players, Emily Hardell

Master's Theses

As youth sport has become increasingly professionalized, many believe that the route to elite level play is through early specialization. Early specialization is a contentious issue, and many risk factors have been associated with high levels and intensities of training in youth. Youth today participate in highly competitive sport in pursuit of elite levels of play, recognition, and financial gain. Early specialization is thought to be a requirement for advancement, yet little is known about the early experiences of team sport athletes who grew up in the US. This is the story of 15 elite female athletes who “made it” …

Authentication And Encryption Of Aerial Robotics Communication, Maojie Han

Master's Theses

As designed to accept custom modules, autonomous aircrafts has developed into a fast-paced industry. The remote-control system of aerial robotics is typically based on wireless communications methods, such as 2.4 GHz, 5.8 GHz, or Wi-Fi. Because the services vary with the communication method, users face different kinds of cybersecurity challenges. This thesis provides an innovative solution for the authentication and security methods in proposed aerial robotics communication network. The thesis begins with an introduction to RF drone communications. After a discussion of the MAV Link communication protocol, the thesis will focus on the differences between the existing one-to-one network and …

Hmong In America: An Emergence Of The American Identity, Nkauj Hli Melinda Lo

Master's Theses

The historical background of the Hmong ethnic group and immigration in regards to how the emergence of the American identity has impacted their cultural identity is examined in this thesis. A qualitative study was conducted to better understand the impacts of immigration and the reasons that younger generations have pushed to be one with the American identity. Drawing upon 10 in-depth interviews of second-generation children of Hmong immigrants, the findings show that the Hmong identity has lost its preservation through the Hmong ethnic group’s experiences in the United States. The researcher found that the American identity affects the Hmong cultural …

Preparation And Characterization Of A (Viologen) Containing Main Chain Peg-Carbon Nanotubes Phase For Hybrid Supercapacitor Application, Kanishka Rana

Master's Theses

Supercapacitors (SCs) and batteries are recognized as the two most important electrical energy storage devices. SCs have some distinct advantages such as high-power density and long cycle life when compared to batteries. However, they have yet to match the energy densities of batteries. In an effort to improve the energy density of SCs, a hybrid supercapacitor was developed using a pair of single-walled carbon nanotube electrodes and two polyethylene glycol (PEG-400) gel-polymer electrolytes (GPEs) containing redox additives of viologen (V) and ferrocene dicarboxylic acid (Fc), respectively. The introduction of V and Fc, was expected to improve the energy performance of …

Community Structure And Zonation Of Antarctic Benthic Invertebrates: Using A Remotely Operated Vehicle Under Ice To Define Biological Patterns, Dorota Szuta

Master's Theses

The Ross Sea, Antarctica is a deep bay of the Southern Ocean that exhibits seasonal sea ice and is adjacent to a permanent ice shelf overlying seawater. In 2008 and 2009, imagery of the seafloor under the McMurdo Ice Shelf and under the seasonal ice in the Ross Sea was collected via remotely operated vehicle (ROV) at depths to 300 m. Distinct differences in Antarctic benthic communities were observed over multiple environmental gradients. Species abundance typically exhibited a unimodal distribution with depth with mid-depth peaks, reflecting a food limitation at the deep end and potentially ice disturbance on the shallow …

The Common Lot Of Nature: The Stoic Concept Of Death In The Writings Of St. Ambrose, Nathan Michael Falls Hall

Master's Theses

The Common Lot of Nature is a comparative analysis which questions the completeness of St. Ambrose’s Christian faith. The comparison focuses specifically on notions of death, and how one should deal with its presence in one’s life. This emphasis was chosen because Ambrose was a Christian bishop who was heavily influenced by Stoicism, and these two worldviews held contrasting beliefs on how death fits into the lives of human beings. The paper begins with an outline of other research regarding Stoicism or its potential connections with Christianity. The following two sections discuss how Stoics and 4th century Christians conceptualized death …

Geophysical Characterization Of A Rare Earth Element Enriched Carbonatite Terrane At Mountain Pass, California Eastern Mojave Desert, Kevin Denton

Master's Theses

Mountain Pass, California, located in the eastern Mojave Desert, hosts one of the world's richest rare earth element (REE) deposits. The REE-rich rocks occur in a 2.5 km- wide, north-northwest trending zone of Mesoproterozoic (1.4–1.42 Ga) stocks and dikes, which intrude a larger Paleoproterozoic (1.7 Ga) schist-gneiss terrane that extends ~10 km southward from Clark Mountain to the Mescal Range. Several REE-enriched bodies make up the Mountain Pass intrusive suite including shonkinite, syenite, and granite comprising an ultrapotassic intrusive suite and the Sulphide Queen carbonatite body.

Two-dimensional modeling of gravity, magnetic, and electrical resistivity data reveals that the Mountain Pass …

Developmental Effects Of Nicotine Exposure In Drosophila Melanogaster, Lisa Janet Wong

Master's Theses

Approximately 12%-20% of pregnant women smoke at some point during pregnancy, and 10% of pregnant women are reported to have smoked during the last 3 months of pregnancy. Smoking during pregnancy leads to developmental health risks for the fetus and child, including increased mortality, low birth weight, and developmental delays. The direct molecular targets of nicotine are nicotinic acetylcholine receptors (nAChRs) due to the similarities in structure between nicotine and acetylcholine. However, in many cases, it remains unclear what molecular events downstream of nAChRs lead to the deleterious effects of nicotine on development. We have established Drosophila melanogaster as a …

A Full Factorial Analysis Of Polymerization Conditions Of Sodium Alginate Beads To Determine The Effect On Diffusivity And Concentration Limit Of Tryptophan And Glucose, Allison Schulkins

Master's Theses

The purpose of this work is to develop an experimental setup with associated mathematical analysis to analyze the changes in diffusivity through calcium alginate gel beads made under different polymerization conditions. The diffusivity of the solutes glucose and tryptophan was calculated by measuring the concentration change over time as solute diffused out of the alginate spheres and into the bulk. The alginate beads were generated using different polymerization conditions following a two-level, three-factor, full-factorial matrix with alginate concentration, cross-linker concentration, and cross-linking time as the factors. The diffusivities showed variations between different conditions, which were analyzed to determine the main …

The Sediment Analysis Of A Prehistoric Shell Midden From Nevis, West Indies, Erika Harvey

Master's Theses

Archaeology in the Caribbean is a growing area of research. The last few decades have revealed a series of Ceramic Age sites +600BCE - 1620CE along the Windward coast of Nevis, West Indies. These sites must be excavated and examined soon, due to the effects of erosion and sea level rise. It is pertinent to explore and expand the knowledge of the prehistoric Carib peoples, if we are truly going to understand the history of the Caribbean. By bridging aspects of science and humanities through geoarchaeological methods, this project is aiming for an interdisciplinary approach to better understand the pre-Colonial …

Effect Of Land Use Types On The Distribution Of Carnivore Species In Santa Clara County, Ca., Logan Thompson

Master's Theses

Anthropogenic pressures such as habitat loss and hunting pressures have caused terrestrial mammalian carnivores to decline by 95–99% in many regions of the world. These species are especially susceptible to fragmented habitats and a diminishing food supply because of their slow reproductive rates and high metabolic demands. In biodiversity hotspots such as California, understanding the range of human impacts to species is critical. This project assessed carnivore species distribution and occupancy by placing remote camera traps in a protected Reserve, agricultural, and developed land use types. Mountain lions were only detected in the protected Reserve, and because of this coyotes …

Eductional Persistence In Latino Male Students Attending University: Their Experiences And Identity Development, Michelle Swartz

Master's Theses

Because Latino male students have lower graduation rates from high school and postsecondary institutions than other demographic groups have, this qualitative research study examined the psychosocial experiences that influence the development of educational persistence. To this end, eight Latino male undergraduate students, who are also low-income and first-generation students at San José State University, participated in semi-structured interviews in which they discussed their identities and school experiences. An analysis of the eight interviews shows how these students made meaning of their education, gender identity, and ethnicity. The constant comparative method for analyzing interview transcripts revealed the following themes: (a) the …

Transfer Student Experiences At Stanford University And The University Of California, Berkeley, Rachael Madison

Master's Theses

Elite institutions have a long history of serving students from high socioeconomic status families. Transfer students who begin their college career at community colleges are typically from low-income, first-generation, and underrepresented minority status families. This population of students has historically been underrepresented at elite colleges. The purpose of this study was to examine the community college transfer student experience at two elite universities, one public and one private, and how institutional programs and structures affect the transfer student experience. The study gathered information from eight community college transfer students, four from each elite university, interviewed in one-on-one semi-structured interviews. Four …

Investigating How Anticipation Of Object States Drives Event Comprehension, Kyra Krass

Master's Theses

Previous literature has suggested that, when given change of state events in a visual world paradigm task, individuals anticipate either the object that can be acted upon or the goal. This study investigated under what circumstances an individual anticipates one over the other. We used reversible action verbs (e.g. open/close), destruction verbs (e.g., eat), and creation verbs (e.g., knit) in the past and future tense to investigate how anticipation differs across these conditions. Individuals heard sentences such as "The woman will open the umbrella" while seeing four objects on a screen: the initial state (e.g., a closed umbrella), the end …

A Physical Framework For Evaluating Flood Inundation Risk Under Different Water Management Scenarios, Sage Hardesty

Master's Theses

In the United States, many river floodplains contain critical infrastructure that is vulnerable to extreme hydrologic events. These structures are designed based on flood frequency analysis aimed at quantifying the magnitude of the extreme events. However, many floodplains are ungauged or poorly gauged, making flood frequency analysis significantly uncertain. This research topic focuses on estimating flood frequency peaks for an ungauged critical infrastructure within Connecticut’s Naugatuck River Basin utilizing a physically based approach consisting of a distributed rainfall-runoff model forced by long-term reanalysis meteorological data and a hydraulic model driven by high-resolution LiDAR derived terrain elevation data. The hydrologic model …

The Role Of Orphan Nuclear Receptor Dax-1 (Nr0b1) In Human Breast Cancer Cells: Expression, Proliferation And Metastasis, Erin Dishington

Master's Theses

The orphan nuclear hormone receptor DAX-1 (Dosage Sensitive Sex Reversal, Adrenal Hypoplasia Congenita on the X Chromosome, gene 1) plays an important role in the development of adrenal and gonadal tissues and functions as a global negative-regulator of steroidogenesis. In addition, it is known to be involved in several diseases including some cancers. Herein, we describe our examination of the role of DAX-1 in breast cancer, specifically its influence on proliferation and metastasis and its expression during progressive stages of disease. In an effort to understand how DAX-1 influences breast cancer cell proliferation and metastasis, we used MCF7 breast cancer …

Three Essays On Tax Abuse And The Fulfillment Of Economic And Social Rights, Ute Reisinger

Master's Theses

Global tax abuse is one of the key obstacles to sustainable development. Each year more than USD one trillion are lost to cross border tax abuse and stored away in tax havens. We establish that tax abuse accumulates capital, makes tax systems more regressive and diminishes government revenues. Tax abuse consequently indirectly increases economic inequality and relative poverty and reduces social expenditure affecting both dimensions of economic and social rights fulfillment: the ability of people to claim their rights in the market place or through the provision of entitlements. We test our theory in a cross-sectional study and find empirical …

Oxygen Isotopic Composition Of Nitrate Produced By Freshwater Nitrification, Danielle Boshers

Master's Theses

Identifying sources of nitrate (NO₃^-) in the environment is important to elucidate causes of water quality impairment and eutrophication. Measurements of naturally occurring stable isotope ratios of nitrogen (¹⁵N/¹⁴N) and oxygen (¹⁸O/¹⁶O) in NO₃^-, can be used to determine the sources, dispersal, and fate of natural and contaminant NO₃^- in aquatic environments. To this end, it is necessary to know how NO₃^- isotopologues are modified by biological reactions, as heavy and light isotopes have different reaction rates. One important microbial reaction that …

The Timecourse Of Phonological Competition In Spoken Word Recognition: A Comparison Of Adults And Very Young Children, Elizabeth Schoen Simmons

Master's Theses

Spoken word recognition (SWR) is the mapping of speech sounds to words from many potential candidates in one’s lexicon. In adults, words that are phonetically similar, of high frequency, or semantically related compete for recognition. An ongoing debate in the literature is whether or not very young children encode spoken words with fine-grained temporal and phonetic detail. Specifically, whether they represent words wholistically or as smaller phonetic units similar to that of adults. The adult literature demonstrates that words that are phonetically similar at onset (cohorts) and offset (rhymes) compete for recognition. As it happens, rhymes have the potential to …

Il-17a And The Receptor Are Regulated By Runx3 During Fracture Healing, Satoko Matsumura

Master's Theses

Enhancing bone repair is the key process which facilitates the improvement of fracture healing outcomes. Despite of many studies regarding osteogenesis induction, Bone morphogenetic proteins-2 (BMP-2) and Platelet-derived growth factor-BB (PDGF-BB) are still the only two the Food and Drug Administration (FDA)-approved treatment^{1, 2}. To develop potential treatment modalities, it is essential to understand the role of transcription factors in fracture healing and how they may be specifically targeted in preclinical models to enhance bone regeneration. While the Runt-related transcription factor 2 (Runx2) is known to play a crucial role in osteoblastogenesis, the role of Runx3, a homologue …

Effects Of Atomic Oxygen On The Vacuum-Induced Mass Loss Properties Of A Variety Of Spacecraft Materials, Tyler Harty

Master's Theses

The space environment influences spacecraft design and material selection in many ways. Two aspects of the space environment that were of interest for this research are the vacuum and atomic oxygen (AO) environments. This project used the outgassing testing chamber and the AO chamber in the Cal Poly Space Environments lab to test multiple common spacecraft materials and determine whether AO affects the outgassing properties of those materials. This research has relevant applications in the design and material selection for spacecraft in low-Earth orbits. AO and outgassing are both known to be individual contributors of spacecraft material mass loss and …

Whitespace Exploration, Jason Lloyd Daniel

Master's Theses

As engineering systems grow in complexity so too must the design tools that we use evolve and allow for decision makers to efficiently ask questions of their model and obtain meaningful answers. The process of whitespace exploration has recently been developed to aid in engineering design and provide insight into a design space where traditional design exploration methods may fail. In an effort to further the research and development of whitespace exploration algorithms, a software package called Thalia has been created to allow for automated data collection and experimentation with the whitespace exploration methodology.

In this work, whitespace exploration is …

Rf Front End For An Integrated Silhouette Capture And Boundary Detection Frequency Modulated Continuous Wave Ultra-Wideband Radar System For The Extension Of Independent Living, Adrian Smet

Master's Theses

Limitations of current eldercare monitoring systems leave a need for new solutions. A monitoring system based on a frequency modulated continuous wave ultra-wideband short-range radar is proposed for this application. The complete proposed monitoring system is comprised of four blocks: boundary detection, silhouette capture, human identification, and data transmission. This paper develops the RF front end hardware for the silhouette capture subsystem.

System requirements are derived for the silhouette capture subsystem. An architecture for the RF front end is designed, and required individual component specifications are determined. Components are selected off the shelf or custom designed for each socket. Full …

Eeg Characterization During Motor Tasks That Are Difficult For Movement Disorder Patients, Adam Joshua Aslam

Master's Theses

Movement disorders are a group of syndromes that often arise due to neurological abnormalities. Approximately 40 million Americans are affected by some form of movement disorder, significantly impacting patients’ quality of life and their ability to live independently. Deep brain stimulation (DBS) is one treatment that has shown promising results in the past couple decades, however, the currently used open-loop system has several drawbacks. By implementing a closed-loop or adaptive DBS (aDBS) system, the need for expensive parameter reprogramming sessions would be reduced, side-effects may be relieved, and habituation could be avoided. Several biomarkers, for example signals or activity derived …

Interfacing A Hirudo Medicinalis Retzius Cell With Insulated Gate Of Mosfet, Rachel M. Smith

Master's Theses

Much work has been done to study the external stimulation of nervous tissue as well as the transmission of neural signals to electronics. Peter Fromherz was one of the pioneers in this area of electrophysiology, with a series of experiments in the 1990s that aimed to characterize and optimize the interface between neural tissue and transistors. In this thesis, Kurt Sjoberg and I interfaced a Retzius cell isolated from a Hirudo medicinalis ganglion with the insulated gate of a MOSFET. The goal was to see change in membrane potential that could be related Fromherz’s original 1991 work. Our experimental setup …

The Value Of Choice: An Exploratory Case Study On The Intrinsic Motivation Of Dance Students Within The Creative Process, Jenna M. Gonsalves

Master's Theses

This exploratory case study was designed to analyze the impact choice making has on the intrinsic motivation of middle school dance students including self determination theory’s basic needs of competence, relatedness, and autonomy. Data were collected using multiple sources including observation rubrics and semi-structured pre- and post- group interviews. Two groups of students ages 11-14 created dances for performance. One group participated in a collaborative approach to the creative process and had the opportunity to make choices. The other group participated in a teacher-led creative process and did not have the opportunity to make choices. A thematic content analysis of …

Building The More Confident Student Choreographer Through Writing: The Use Of Prompts To Guide The Choreographic Process, Yvette Bennett

Master's Theses

The purpose of this research was to implement specific writing prompts into a high-school curriculum that aids in the choreographic process in an effort to bring about confident student choreographers. This research evaluated the choreographic process using a series of writing prompts to support participants with the goal of producing successful student choreographed dance works throughout a semester long high school dance course. The researcher posed the following three essential questions: How does the writing prompt aid in the choreographic process? What did the participants learn about the choreographic process by using writing prompts? Do the participants feel a sense …

Let's Dance! Designing And Assessing Dance-Integrated Lessons In The Fifth Grade Language Arts Class, Emily Lorraine Hoch

Master's Theses

The purpose of this study was to design movement and dance-integrated lessons that would complement a poetry unit in a fifth grade language arts class at a public charter school. This quantitative and qualitative study sought to discover how the use of creative movement and dance could improve students’ ability to communicate through writing, and revise their work, as well as assess how this approach to teaching would effect their ability to think critically. These integrated lessons aligned with Colorado State Core Standards and 21st Century skills, as dance integration promotes the use of creativity, critical thinking, communication and collaboration …

Dance For Special Needs Students: Building Confidence And Motor Skills, Jennifer Monique Dabalsa

Master's Theses

Participating in a dance class is influential in the development of young people’s creative, imaginative, individual, and communicative skills. The use of dance within a classroom increases physical fitness, enriches motor skills, coordination, and enhances social skills. Dance also increases muscular endurance, builds balance, as well as encourages teamwork and group skills. Most, if not all individuals crave to be socially accepted on some level. Many individuals with special needs are limited in verbal communication, or they are completely non-verbal. Connecting to individuals with these types of limitations proves to be challenging in comparison with a typical abled bodied individual. …

Determining The Effectiveness Of The Cancer Phase Training Model In A Group Setting, Scott F. Eberhardt

Master's Theses

The role of exercise as a primary therapy has been well documented and has the capacity to act across multiple body systems to attenuate cancer-related toxicities. To date, the Cancer Phase Training Model is the only cancer rehabilitation intervention that includes recommended modes, intensity, frequency, and duration of exercise for cancer survivors. The one-on-one model has been shown to be the most effective method of cancer rehabilitation; however the largest perceived limitation of this model is the expense of the program and its lack of scalability. By creating a structured cancer specific group model that can produce similar results to …