Digital Commons Network^™

Response Of Cyp1a And Vegf In Cyprinodon Variegatus When Exposed To Source/Dispersed Oil And Hypoxia, Bryan Matthew Hedgpeth

Master's Theses

My thesis research focused on the effects of two environmental stressors on the small estuarine fish, Sheepshead minnow (Cyprinodon variegatus). Specifically, I examined the effects of exposure to crude and dispersed oil and hypoxia. I looked for responses using a combination of molecular and ecological endpoints. These stressors were chosen because of the 2010 Deepwater Horizon oil spill which released 4.1 million barrels of crude oil into the northern Gulf of Mexico. An estimated 2.1 million gallons of Corexit 9500 was used in an attempt to disperse the oil slick into the water column. The spill happened in …

Comparison Of Stated Iron Concentrations Between Name Brand And Generic Children's Multivitamins, Ashlea Nicole Pettengill

Master's Theses

The mineral iron is one of the most common minerals on Earth; not only is iron found in the atmosphere, water, and plants, it is an essential mineral needed for the human body. Children need iron at a young age to ensure proper growth and development of myelin, to promote oxygen transportation within red blood cells, and to assist in Deoxyribonucleic acid (DNA) and Ribonucleic acid (RNA). With iron readily available in children's multivitamins, iron toxicity can become an issue when taking too many tablets. With two types of brands, generic and name brand, parents should be aware of the …

Wireless Cooperative Communication And Networking, Yi Zhu

Master's Theses

Cooperative communication can achieve diversity gain and increase the channel capacity. This paper proposes a novel cooperative scheme called Cooperative Step-Wise Demodulation, which utilizes low level demodulation to demodulate high level modulated signal cooperatively. This paper focuses cooperative scheme in multi-hop wireless networks. The bit error rate probability is analyzed. The comparison among the proposed scheme and the conventional scheme is made through simulation and soft-define radio based experiments. Results show that the proposed scheme has great potential in the performance improvement of cooperative communication.

The Role Of Hardiness, Family Hardiness, And Parenting Self-Efficacy On Parenting Stress In Adoptive Parents, Erica Danielle Raisanen

Master's Theses

Adoptive parents are at risk for experiencing a high level of parenting stress (McGlone, Santos, Kazama, Fong, & Mueller, 2002) throughout the duration of the adoption experience. Adoptee background factors have been found to contribute to increased levels of parenting stress and distress in adoptive parents (Brooks, Simmel, Wind, & Barth, 2005; McDonald, Lieberman, Partridge, & Homby, 1991; McGlone et al., 2002). Increased parenting stress has been associated with negative outcomes for both parent and child (Ang, 2008; Deater-Deckard, Smith, & Ivy 2005; Morgan, Robinsion, & Aldridge, 2002). Hardiness, family hardiness and parental self-efficacy are protective factors that have all …

Topological Network Alignment Based On Graphlet Degree Signature, Shengai Jin

Master's Theses

A large number of experimental biological network data of different types are becoming available due to advanced experimental techniques. Network alignment is considered to be one of the most common methods to analyze and compare biological networks to understand evolution, biological mechanisms, and the complexity of diseases. Kuchaiev, Milenkovic, Memisevic, Hayes, & Przulj (2010) recently proposed a topological method of network alignment based on graphlet degree signatures, called GRAAL, which can be used to align any kind of networks not just biological ones. Several global network alignment algorithms also have been designed based on GRAAL, such as MI-GRAAL, H-GRAAL, and …

Direct Chain-End Functionalization Of Living Polyisobutylene With Phenoxyalkyl(Meth)Acrylates, Conor Patrick Roche

Master's Theses

This volume describes efforts toward the synthesis and employment of phenoxyalkyl (meth)acrylates, which were used to end-quench 1sobutylene polymers m1tiated from 2-chloro-2,4,4-tnmethylpentane (TMPCl), and 5-tert-butyl-1 ,3-d1(1-chlorol- methylethyl)benzene (bDCC), respectively, at -70 °C in 40/60 (v/v) hexane/methyl chlonde. The quencher/cham end molar rat10s typically ranged from 2.5-4, while the ratio of Lewis ac1d/cham end was vaned from approximately 3 5-6 In all cases, alkylation occurred exclusively at the para position of the quencher and no cham degradat10n was observed, even at high concentrations of TiC14 and long reaction times. Prellmmary qualitative studies mvolved the reaction of quenchers of varymg alkyl tether …

Interactions Between Protozoan Prey (Phylum Protista) And Their Mosquito Predators (Order Diptera, Family Cuclicidae) Prey Size And Predator Behavior Effects, Jeffrey Jay Skiff

Master's Theses

Mosquitoes (Diptera. Culicidae) are insects that are medically important as adults as they vector numerous diseases. Yet, understanding the ecology of the larval stage can lead to surveillance and control of adult populations. Aedes albopictus, Aedes triseriatus, Cu/ex corona/or, and Culex quinquefasciatus are four species of mosquito that co-occur in discarded automobile tires. Mosqui-to larvae feed on microorganisms (including protozoans) and particulate organic matter Most larval feeding experiments. howt:ver, have dealt exclusively with bacteria, fungi , and particulate organic matter Although bactena and fungi are important sources of nitrogen and lipids, they may be 111sufficient sources of carbon, which may …

Empowerment And Health In A Low Income Community In Mumbai, India, Lwendo Moonzwe

Master's Theses

The data on which this thesis is based were collected in three study communities located in a marginalized area of Mumbai. We draw on two data sources: in-depth qualitative interviews conducted with 66 married women and a survey sample of 260 married women. This thesis examines the relationship between empowerment to women’s self-reported general health status and women’s self-reported health during pregnancy in low-income communities in Mumbai. The results of the analysis show that empowerment functions differently in relation to women’s general health situation and their pregnancy status. Findings indicate that women who are more empowered are more likely to …

Reactions To English Language Learning In Chile As A Means For Personal And National Development, Kortnee Byrd

Master's Theses

In our globalized world today, English has developed into the worldwide

language. Chilean leaders, in connection to their development goals to reach a developed

country status by 2020, have highlighted the need for Chilean citizens to become

bilingual in order to attract foreign investment and further integrate into the world

market. Leaders also highlight how English education will serve as an equalizing

measure to combat the socioeconomic inequality that has plagued this country since

Spanish colonization. While the economic benefits are clear, questions remain as to what

the social and cultural costs will be. This research project presents how a …

A Transnational And Intergenerational Account Of Value Preference Patterns: Revisiting Needs-Gratification And Post-Materialist Theories, Fouad Bou Zeineddine

Master's Theses

The socio-political values predominant in a particular society will reflect the correspondent needs of that society, and these needs can include factors other than material acquisition. In contrast to needs-gratification theory (Maslow, 1970), and post-materialist theory (Inglehart, 1971), this paper discusses agency in terms of relational autonomy (Oshana, 2006), as it pertains to power. I argue that a) personal and national economic affluence or security may not be sufficient to describe social ecology nor fully describe the ways that power can influence values, b) individual and collective relational power is utilitarian and essential, c) fulfillment of material and social needs …

Modulation Of Synaptic Transmission By Adenosine In Layer 2/3 Of The Rat Visual Cortex In Vitro, Nicholas M. Bannon

Master's Theses

No abstract provided.

An Experimental Investigation Of The Stol Performance Of Cal Poly's Amelia In The Nfac, Jonathan Andrew Lichtwardt

Master's Theses

Results from Cal Poly's recent wind tunnel test, during the Winter of 2011-2012, in the 40- by 80-foot test section at the National Full-Scale Aerodynamics Complex (NFAC) at NASA Ames Research Center are presented. AMELIA, the Advanced Model for Extreme Lift and Improved Aeroacoustics, is the first full-span, cruise efficient, short take-off and landing (CESTOL) model incorporating leading- and trailing-edge blowing wing circulation control and over-the-wing mounted turbine propulsion simulators (TPS) to date. Testing of the 10 foot span model proved successful and was the result of a 5 year NASA Fundamental Aeronautics Program Research Announcement. The test generated extensive …

Enabling Rapid Conceptual Design Using Geometry-Based Multi-Fidelity Models In Vsp, Joel Brian Belben

Master's Theses

The purpose of this work is to help bridge the gap between aircraft conceptual design and analysis. Much work is needed, but distilling essential characteristics from a design and collecting them in an easily accessible format that is amenable to use by inexpensive analysis tools is a significant contribution to this goal. Toward that end, four types of reduced-fidelity or degenerate geometric representations have been defined and implemented in VSP, a parametric geometry modeler. The four types are degenerate surface, degenerate plate, degenerate stick, and degenerate point, corresponding to three-, two-, one-, and zero- dimensional representations of underlying geometry, respectively. …

Why Risk It? The Effect Of Risk And Time Preferences On Microfinance Loan Default, Nike Start

Master's Theses

Microfinance is widely recognized as a powerful method for poverty

alleviation. However, little is known about the characteristics of those who

default on their loans. Understanding the behavior of borrowers is an important

component of mitigating adverse selection and the moral hazard of lending. Both

of these concepts embody some of the greatest challenges faced by microfinance

institutions, and they provide the major motivation for this study. Accordingly,

the main objective of this research is to investigate whether non-delinquent

borrowers and delinquent borrowers of a microfinance institution reveal any

difference in their level of risk preference and time preference. This …

Stress, Anxiety, And Somatic Symptoms: A Comparison Of Biomarkers In A Clinical Sample, David J. Finitsis

Master's Theses

Anxiety disorders are the most prevalent class of mental disorders, often characterized by a chronic course and comorbid psychopathology. The anxiety-stress literature utilizing cortisol as a biomarker of the hypothalamus pituitary adrenal (HPA) axis has been inconsistent. The establishment of salivary alpha-amylase (sAA) as a biomarker of sympathetic nervous system (SNS) activation allows researchers an opportunity to examine the stress response more fully. This study sought to explore relationships between trait anxiety and salivary stress biomarkers in an outpatient sample attending a specialized anxiety treatment center. Multiple regression and moderator analyses were conducted to examine associations between psychosocial and physiological …

Migration And Children's School And Labor: Evidence From El Salvador, Zachary Intemann

Master's Theses

This paper examines the impact of parental migration on schooling outcomes for children left behind in El Salvador. Using cross sectional data collected in 2012, outcomes for children are observed for children with migrant parents. The outcomes are also analyzed by gender of the migrant parent who left his or her child behind. Results are observed using instrumental variable estimations, as well as a seemingly unrelated regression to estimate the impact of migration on a child’s time allocation. Outcomes are also analyzed measuring the impact of remittances. Results show that children with at least one migrant parent will complete more …

Effect Of Post Manufacture Thermal Dip Treatment On Proteolysis Of Commercial String Cheese During Storage, Melissa Karen Hsu

Master's Theses

String cheese, a Mozzarella cheese, has the unique ability to string in fibrous strands when pulled apart. Graders judge string cheese by its stringy texture; samples with copious amounts of string are awarded high ratings. But just as the texture of natural cheeses softens with time, the stringy texture of string cheese can diminish with age too.

Age related softening in cheese is due primarily to an important biochemical event known as proteolysis, which is attributed to inherent milk proteinases, residual coagulant activity, and enzymes from the lysis of starter culture microorganisms. It is hypothesized that a post manufacture heat …

U.S. Multinationals Abroad: Fdi Determinants In The Global Food Sector, Brandon Charles Banner

Master's Theses

The following study assesses economic and political determinants of foreign direct investment by U.S. firms. Data from the Bureau of Economic Analysis at the U.S. Department of Commerce was used for total and food sector FDI for 35 countries from the years 2001-2008. Using these data in three econometric models, the paper examines the effect on FDI of regional trade blocs as well as political factors such as labor and credit market regulations, and transfers and subsidies. Finally, the thesis provides a comparison of each model on two dependent variables: food sector and total FDI. The study finds that management …

Novel Approach To Junctional Bleeding: Tourniquet Device Proposal For Battlefield Hemorrhage Control, Kyle W. Cabaniss

Master's Theses

This study investigated possible solutions to the current wartime problem of junctional hemorrhaging, or massive traumatic hemorrhaging in non-tourinquetable areas such as the neck, groin, or armpit. Junctional hemorrhaging has been identified as a major contributor to potentially survivable deaths seen on the battlefield today and therefore is a priority for the U.S. armed and coalition forces (Kragh et al., 2011a; Bozeman, 2011). Common tourniquets today are standard issue and carried by soldiers in the military, but are limited to distal extremity trauma. As the battlefield has changes however, trauma has transformed from commonly seen gunshot wounds to more extreme …

A Gravity Gradient, Momentum-Biased Attitude Control System For A Cubesat, Ryan J. Sellers

Master's Theses

ExoCube is the latest National Science Foundation (NSF) funded space weather CubeSat and is a collaboration between PolySat, Scientific Solutions Inc. (SSI), the University of Wisconsin, NASA Goddard and SRI International. The 3U will carry a mass spectrometer sensor suite, EXOS, in to low earth orbit (LEO) to measure neutral and ionized particles in the exosphere and thermosphere. Measurements of neutral and ion particles are directly impacted by the angle at which they enter EXOS and which leads to pointing requirements. A combination of a gravity gradient system with a momentum bias wheel is proposed to meet pointing requirements while …

Ad-Hoc Regional Coverage Constellations Of Cubesats Using Secondary Launches, Guy G. Zohar

Master's Theses

As development of CubeSat based architectures increase, methods of deploying constellations of CubeSats are required to increase functionality of future systems. Given their low cost and quickly increasing launch opportunities, large numbers of CubeSats can easily be developed and deployed in orbit. However, as secondary payloads, CubeSats are severely limited in their options for deployment into appropriate constellation geometries.

This thesis examines the current methods for deploying cubes and proposes new and efficient geometries using secondary launch opportunities. Due to the current deployment hardware architecture, only the use of different launch opportunities, deployment direction, and deployment timing for individual cubes …

Axisymmetric Air Augmented Methanol/Gox Rocket Mixing Duct Experimental Thrust Study, Kyle Jacob Johnson

Master's Theses

A hot-flow axisymmetric Air Augmented Rocket (AAR) test apparatus was constructed to test various mixing duct configurations at static conditions. Primary flow for the AAR was provided through a liquid methanol-gaseous oxygen bipropellant rocket. Experimental thrust measurements were recorded and propellant mass flow rates and chamber conditions were calculated using an iterative solver dependant on recorded propellant line stagnation pressures. Primary rocket flow produced thrust ranging from 14 to 17.9lbf. Primary mass flow rate through testing ranged from 0.071 to 0.085lbm/s with calculated chamber pressures between 298-362psia. Calculated primary flow velocity ranged from 6,600ft/s to 8,000ft/s depending on propellant pressure …

Improving Webide Through Delightful Design And Gamification, Michael Hilton

Master's Theses

WebIDE is a web-based online learning environment. WebIDE has been used

successfully to teach CS0 and CS1 students Java and C concepts and software

engineering best practices, specically Test Driven Development. Previous Web-

IDE development has concentrated on developing functionality. The main goal

of this eort is to improve two non-functional aspects of WebIDE. The rst is to

design a more delightful user interface. The second is to add a scoring mecha-

nism that encourages students to develop best practices. The scoring mechanism

rewards students who answer the question correctly on the rst attempt, dis-

couraging them from spamming the …

Effects Of Ovariectomy And Anatomical Location On Osteonal Encroachment In Adult Cortical Ovine Bone, Paige Brell Ryan

Master's Theses

The purpose of this study is to further quantify adult ovine ovariectomized bone for new remodeling characteristics to obtain a better understanding of how remodeling is occurring and the effectiveness of this animal model for the study of postmenopausal osteoporosis. Postmenopausal osteoporosis is a major health concern and animal models to test new treatment options are needed. The ovine model is a good option because the ewes undergo Haversian remodeling, are a large sized animal, and have a similar hormone profile to humans. Ewes, however, do not undergo a natural menopause, so an ovariectomy surgery was conducted in the sheep …

Modeling Flood Reduction Scenarios For A Small Coastal Community, Evan J. Perez

Master's Theses

The Arroyo Grande Creek Watershed, an approximately 170 mi² watershed located on the central coast of California, drains to the Pacific Ocean via the Arroyo Grande Creek that passes through several coastal cities including the community of Oceano. At the mouth of the Creek is the Arroyo Grande Lagoon, which is connected to another lagoon known as the Oceano Lagoon, by a tidal flap-gate whose hydraulics is a function of water levels in the two lagoons. Historically the Oceano Lagoon has played a part in floods that have occurred in the community of Oceano. The most recent flooding occurred …

System Identification Of A Bridge-Type Building Structure, Pablo D. Ramos Jr.

Master's Theses

The Bridge House is a steel building structure located in Poly Canyon, a rural area inside the campus of California Polytechnic State University, San Luis Obispo. The Bridge House is a one story steel structure supported on 4 concrete piers with a lateral force resisting system (LFRS) composed of ordinary moment frames in the N-S direction and braced frames in the E-W direction and vertically supported by a pair of trusses. The dynamic response of the Bridge House was investigated by means of system identification through ambient and forced vibration testing. Interesting findings such as diaphragm flexibility, foundation flexibility and …

Spoons: Netflix Outage Detection Using Microtext Classification, Eriq A. Augusitne

Master's Theses

Every week there are over a billion new posts to Twitter services and many of those messages contain feedback to companies about their services. One company that recognizes this unused source of information is Netflix. That is why Netflix initiated the development of a system that lets them respond to the millions of Twitter and Netflix users that are acting as sensors and reporting all types of user visible outages. This system enhances the feedback loop between Netflix and its customers by increasing the amount of customer feedback that Netflix receives and reducing the time it takes for Netflix to …

Home Range And Habitat Use Of Santa Rosa Island Foxes (Urocyon Littoralis Santarosae), Elizabeth Marie Drake

Master's Theses

Island foxes (Urocyon littoralis) are currently listed as federally endangered on four of the six Channel Islands to which they are endemic. The Santa Rosa Island (SRI) population declined by 99% during the 1990’s due to non-native golden eagle (Aguila chrysaetos) predation and is currently the lowest fox population (~280) and density (0.86 foxes/km²) of any of the Channel Islands. The goals of this study were to assess new miniaturized GPS technology and to quantify home range and habitat use of the SRI population. This is only the second use of Global Positioning System (GPS) …

Effects Of Damage Arrestment Devices On The Fatigue Life Of Impacted Composite Sandwich Beams, Yvette Vanessa Wood

Master's Theses

The use of composite sandwich panels is rapidly increasing in the aerospace industry. In these applications, thin composite face sheets are typically co-cured to foam or honeycomb cores. One of the greatest concerns in these types of applications is face-core delamination because it can ultimately lead to catastrophic failure of the structure. Further, the effects of foreign object damage on composite sandwich structures are often catastrophic. Damage to the structure is often undetectable through visual inspection, leading to concerns of unknown interlaminar damage through the life of the structure, which can cause a catastrophic failure. This research determines the effectiveness …

Design And Performance Of Circulation Control Geometries, Rory Martin Golden

Master's Theses

With the pursuit of more advanced and environmentally-friendly technologies of today’s society, the airline industry has been pushed further to investigate solutions that will reduce airport noise and congestion, cut down on emissions, and improve the overall performance of aircraft. These items directly influence airport size (runway length), flight patterns in the community surrounding the airport, cruise speed, and many other aircraft design considerations which are setting the requirements for next generation aircraft. Leading the research in this movement is NASA, which has set specific goals for the next generation regional airliners and has categorized the designs that meet the …