Digital Commons Network^™

Heide: An Ide For The Homomorphic Encryption Library Helib, Grant Taylor Frame

Master's Theses

Work in the field of Homomorphic Encryption has exploded in the past 5 years, after Craig Gentry proposed the first encryption scheme capable of performing Homomorphic Encryption. Under the scheme one can encrypt data, perform computations on the encrypted result (without needing the original data), and then decrypt the data to get the result as if the computations had been run on the unencrypted data.

Such a scheme has wide reaching implications for cloud computing. Computations on sensitive data, just like regular data, could now be performed in the cloud with the added security that even the cloud service provider …

Gpuhelib And Distributedhelib: Distributed Computing Variants Of Helib, A Homomorphic Encryption Library, Ethan Andrew Frame

Master's Theses

Homomorphic Encryption, an encryption scheme only developed in the last five years, allows for arbitrary operations to be performed on encrypted data. Using this scheme, a user can encrypt data, and send it to an online service. The online service can then perform an operation on the data and generate an encrypted result. This encrypted result is then sent back to the user, who decrypts it. This decryption produces the same data as if the operation performed by the online service had been performed on the unencrypted data. This is revolutionary because it allows for users to rely on online …

Effect Of Surfactant Architecture On Conformational Transitions Of Conjugated Polyelectrolytes, Greg A. Braggin

Master's Theses

Water soluble conjugated polyelectrolytes (CPEs), which fall under the category of conductive polymers, possess numerous advantages over other conductive materials for the fabrication of electronic devices. Namely, the processing of water soluble conjugated polyelectrolytes into thin film electronic devices is much less costly as compared to the processing of inorganic materials. Moreover, the handling of conjugated polyelectrolytes can be performed in a much more environmentally friendly manner than in the processing of other conjugated polymers because conjugated polyelectrolytes are water soluble, whereas other polymers will only dissolve in toxic organic solvents. The processing of electronic devices containing inorganic constituents such …

The California Coastal Commission's Approach To Lower Cost Overnight Visitor-Serving Accommodations Mitigation: A Policy And Legal Analysis, David Francis Pierucci

Master's Theses

Section 30213 of California Coastal Act requires the California Coastal Commission (“CCC”) to protect, encourage, and, where feasible, provide for lower cost overnight visitor accommodations (“LCOVA”) along the State’s coast. As mitigation measure consistent with this charge, the CCC imposes a $30,000 fee for 25 percent for rooms of new hotel developments determined to be higher cost (the “$30,000/25% fee”), in-lieu of LCOVA facility provision. Generally, the CCC applies this fee in two circumstances: (1) As an ad hoc fee for developers upon CCC review of coastal development permit (“CDP”) applications, and (2) as a legislatively imposed fee to be …

Criticality And Risk Assessment For Pipe Rehabilitation In The City Of Santa Barbara Sewer System, Rossi Carmelo Rossi Ii

Master's Theses

Aging sewer infrastructure is posing greater and greater risk to the health and well-being of City residents. Issues can range from pipe blockages in sewer laterals to Sanitary Sewer Overflows. This thesis develops a risk analysis method that can be used by municipalities to maintain and rehabilitate sewer assets. Risk combines the effect of Likelihood of Failure (LOF) and Consequence of Failure (COF) to perform a complete two-dimensional analysis that allows for relative comparison between different pipes in the system. The LOF rating has been equated to pipe integrity while the COF rating was related to the environmental, economic, and …

Micro Electrostatic Actuation Of A Silicon Diaphragm, Matthew W. Samples

Master's Theses

There are a number of applications, from hearing aids to microfluidic pumps, which utilize micro-scale actuating diaphragms. These MEMS (micro-electromechanical system) devices can be actuated by electrostatic forces, which utilize an induced electric field to pull two charged plates towards one another. Such devices were fabricated and electrostatic actuation of the diaphragms was performed to analyze its viability as a micro-speaker. The long-term performance of such products requires adequate diaphragm deflection to create audible pressure waves with relatively low maximum stresses to ensure a high cycle fatigue life. With these requirements, initial calculations and FEA (finite element analysis) were performed …

Using The Papathoma Tsunami Vulnerability Assessment Model To Forcast Probable Impacts, And Planning Implications, Of A 500-Year Tsunami In Cayucos, California, Andrew Robert Marshall

Master's Theses

This report focuses on using the Papathoma Tsunami Vulnerability Assessment Model (PTVA) to demonstrate the vulnerability of Cayucos to a 500-year tsunami, and using the results to inform specific planning recommendations. By modeling inundation with GIS and analyzing building attributes via the PTVA model, this study has gone beyond any previous vulnerability assessments of Cayucos. Findings include: delineation of the most vulnerable areas, estimates of numbers of lost civic buildings, commercial buildings and houses, as well as estimates of people displaced from tsunami damaged homes. The report goes on to discuss what mitigation measures are in place and what further …

Detecting Change In Central California Coast Coho Salmon Habitat In Scotts Creek, California, From 1997–2013, Ashley Brubaker Hillard

Master's Theses

Scotts Creek, in Santa Cruz County, Calif., supports the southernmost extant population of Coho Salmon (Oncorhynchus kisutch) in North America. In 1997, the California Department of Fish and Game (now Fish and Wildlife) conducted an extensive habitat typing survey of mainstem Scotts Creek, describing all habitat units from the top of the estuary to the limit of anadromy approximately 12 km upstream. I repeated this survey in 2013 to (1) assess changes in the quantity and quality of instream habitat, (2) compare the current condition to goals and standards established in the federal Central California Coast (CCC) Coho …

Design Of An Ultra-Wideband Spiral Antenna For Ground-Penetrating Microwave Impulse Radar Applications, Bradley Curtis Hutchinson

Master's Theses

Radar systems that allow early detection of underground IEDs can save lives. The Microwave Impulse Radar (MIR) capable of IED detection requires antennas capable of transmitting sub-nanosecond pulses over ultra-wideband (UWB) frequency ranges. This thesis investigates the suitability of a novel MIR antenna for high-accuracy ground-penetrating radar (GPR) applications. Key GPR antenna considerations are pulse dispersion, size, and cost. UWB horn antennas provide excellent dispersion performance but limit system efficacy due to significant size and cost requirements. Micro-strip spiral antennas provide a low-cost alternative to UWB horn antennas, but common spiral designs demonstrate poor pulse dispersion performance. The article “Low-Dispersion …

A Finite Element Analysis On The Viscoelasticity Of Postmenopausal Compact Bone Utilizing A Complex Collagen D-Spacing Model, Austin C. Cummings

Master's Theses

The nanoscale dimension known as D-spacing describes the staggering of collagen molecules, which are fundamental to the biphasic makeup of bone tissue. This dimension was long assumed to be constant, but recent studies have shown that the periodicity of collagen is variable. Given that the arrangement of collagen molecules is closely related to the degree of bone mineralization, recent studies have begun to look at D-spacing as a potential factor in the ongoing effort to battle postmenopausal osteoporosis. The theoretical models presented by previous studies have only opted to model a single collagen-hydroxyapatite period, so the creation of an intricate …

Stability Analysis Of Negative Resistance-Based Source Combining Power Amplifiers, Hannah S. Homer

Master's Theses

An investigation into the stability of negative resistance-based source combining power amplifiers is conducted in this thesis. Two different negative resistance-based source combining topologies, a series and parallel version, are considered. Stability is analyzed using a simple and intuitive broadband approach that leverages linear circuit stability criterion and two different linearization methods: linearization around the operating point and in the frequency domain. Using this strategy, it is shown that conditions for self-sustained oscillation exist for both topologies. For the series combining topology, self-sustained oscillation is prevented by means of injection locking.

The Impact Of Self-Practice Qigong On Strength Gains And Wellbeing During Off-Season Training For Fall Sport Athletes, Christopher Shawn White

Master's Theses

The use of mind-body therapies, such as Tai Chi, yoga, Qigong, and meditation are frequently reported as a means of coping with anxiety and depression. Despite these findings, there is little knowledge of Qigong exercise being able to impact elite athlete’s physical and mental states during off-season training. Purpose: Determine the efficacy of Qigong to facilitate strength gains and wellbeing in collegiate anaerobically trained athletes. Methods: Seventy-three athletes (47 M, 26 F, 18-22 years) volunteered to participate in a Qigong exercise group or standard care group. Strength gains were measured through a vertical jump test and a 3 RM front …

The Development Of A Small Scale Wind Tunnel Simulating The Atmospheric Boundary Layer, Maximillian Hobson-Dupont

Master's Theses

There has been much success in atmospheric boundary layer simulation with medium sized closed-circuit wind tunnels with test section dimensions of approximately 1 x 1 m. However, smaller, blower-type wind tunnels are more common in university laboratories due to the lower cost and smaller space requirements. A small size, open flow wind tunnel with a 1 x 1 foot test section was modified to simulate the atmospheric boundary layer with a combination of upstream spires and cubic roughness elements. The primitive spire geometry detailed in the literature was found to yield poor agreement with the power law velocity profile of …

Growth, Mortality, And Reproductive Potential Of California Halibut (Paralichthys Californicus) Off Central California, Cheryl L. Barnes

Master's Theses

Differences in key biological processes, such as growth and reproduction, can greatly influence localized population dynamics. Thus, it is important to evaluate intraspecific variation at several spatial scales to better understand biological limitations and develop management plans that maximize fishery sustainability. In 2011, the California Department of Fish and Wildlife (CDFW) conducted its first comprehensive stock assessment for California Halibut, Paralichthys californicus. However, limited life history data were available north of Point Conception. To improve our understanding of central California Halibut biology, 704 fish were collected during 2012 and 2013. Von Bertalanffy growth parameters were estimated at L∞ = 1041 …

The Investigation Of The Low Temperature Combustion Of Mesitylene And Tert-Amyl Methyl Ether By Synchrotron Photoionization Mass Spectrometry, Martin Yu-Hin Ng

Master's Theses

This thesis describes the combustion experiments performed at the Chemical Dynamics Beamline of the Advanced Light Source (ALS) located at the Lawrence Berkeley National Laboratories (LBNL). The need for renewable fuel sources, the need for the study of their combustion in the contexts of homogenous charge combustion ignition (HCCI) engines can be found in Chapter 1. The components of the experimental set-up used throughout this thesis—time-of-flight mass spectrometer, Excimer laser, vacuum pumps and other components—and the components of ALS responsible in synchrotron radiation generation and processing—the linear accelerator, the booster ring, insertion devices, gas filters and monochromator are explained in …

Electrolyte Effects On The Kinetics Of Comproportionation Electron-Transfer Reactions And On Intervalence Charge-Transfer Band Energies Of Binuclear Ruthenium Ammine Complexes, Zhiji Han

Master's Theses

Chapter 1 describes an overview of electron-transfer reactions. The kinetic equations for ET reactions have also been described in detail.

Chapter 2 describes a series of novel kinetic accelerations which deviate strongly from the predictions of the classical Debye-Huckle theory with a range of different added “inert” electrolytes. The greater catalytic effects seen with the heavier halides and other catalytic electrolytes (especially certain dicarboxylates) indicate an important role for hole-transfer superexchange in the ET transition state. The hypothesis of a catalytic ternary association complex, [RuII--X--RuIII] has also been explored by kinetic modeling of the reaction. An increasing ratio of anion-catalyzed …

The Impact Of Offcial Development Assistance On Foreign Direct Investment: Evidence From Vietnam, Hang Pham

Master's Theses

The relationship between Foreign Direct Investment (FDI) and Official Development Assistance (ODA) has not been fully established, nor has its directionality, as evidenced the disagreement among economists. Using existing literature as starting point, I extend its base by examining key causal variables for ODA and FDI within 64 Vietnamese provinces, covering the span from 1998 to 2012. With the most extensive and newest dataset available, I find that ODA attracts more FDI inflows in intermediate term (5year average) and long term (all year average), but not in the short-term. An important policy implication of these results for developing countries, and …

Furanic Molecules: Multiplexed Synchrotron Photoionization Investigations And Aerosol Studies, Audrey R. Smith

Master's Theses

The oxidation reactions of 2-methylfuran (2MF) and 2-ethylfuran (2EF) initiated by Cl radicals is studied at the low temperatures, in addition to the determination of the absolute photoionization cross-sections of 2EF, 2-acetylfuran, and furfural. These experiments are carried out using synchrotron photoionization mass spectrometry (SPIMS) with an orthogonal time-of-flight spectrometer used for mass analysis at the Advanced Light Source of Lawrence Berkeley National Laboratory. CBS-QB3 calculated adiabatic ionization energies (AIE) agree well with the experimental results and published literature values. Furfural is found to be the dominant product of 2MF oxidation, with 2-acetylfuran and 2-vinylfuran being the dominant products of …

Investigations Of Thioether Generation For S-D-Ribosyl-L-Homocysteine Synthesis, Brendan Corcoran

Master's Theses

Creation of the thioether linkage is a fundamental step for the chemical preparation of the bacterial quorum sensing molecule S-D-ribosyl-L-homocysteine (SRH). Although previous preparations of SRH and its analogues have been reported in the literature, they employ assorted methods with varied results. Therefore, a reassessment of the methodology used for synthetic preparation of the thioether bond in SRH-like molecules is here considered. This work examines four methods of thioether generation following two mechanisms, bimolecular nucleophilic substitution (S_N2) and radical-initiated thiol-ene coupling, in an attempt to generate SRH in a more efficient and reproducible manner. Both mechanisms address …

The Role Of Gender And Education In The Perpetration And Prevention Of School-Related Gender-Based Violence, Sabrina James

Master's Theses

This study examines how gender ideologies contribute to violence in and around schools while looking through a peace research framework proposed by peace studies scholar Johan Galtung (1969). The study explores school-related gender-based violence (SRGBV) in three regions—the United States, India, and Central Africa—and highlights the universal and destructive nature of SRGBV as a serious obstacle to the right to education and achieving education for all.

In addition, the study examines three promising initiatives in the aforementioned regions that combat SRGBV. The aim of the study is to contribute to the dialogue of effective strategies for addressing SRGBV vis-à-vis gender …

The Effect Of The Traditional Mediterranean-Style Diet On Metabolic Risk Factors: A Meta-Analysis, Marissa L. Garcia

Master's Theses

Importance: A Mediterranean-style diet has been shown to be effective in improving a variety of disease outcomes, including metabolic risk factors. Such dietary patterns are complex and, thus it is currently unclear as to which components and intervention characteristics are more greatly associated with reducing metabolic syndrome risk.

Objective: To obtain overall effect sizes for the metabolic risk factors (waist circumference, HDL cholesterol, triglycerides, fasting blood glucose, systolic blood pressure, and diastolic blood pressure) and explain the variability across the current literature based on study design, sample, and diet characteristics.

Data Sources: Six electronic databases (PubMed, EMBASE, Web of Science, …

Electrostatic Interactions Stabilizing The I-Domain Of Bacteriophage P22, Christina Harprecht

Master's Theses

No abstract provided.

The Effect Of Heat Acclimation On Hand Cooling Efficacy During Exercise Heat Stress, Elizabeth Adams

Master's Theses

The Effect of Heat Acclimation on Hand Cooling Efficacy During Exercise Heat Stress

Adams EL, Vandermark LW, Pryor JL, Pryor RR, Vanscoy RM, Denegar CR, Huggins RA, Armstrong LE, Casa DJ. Korey Stringer Institute, Department of Kinesiology, University of Connecticut, Storrs, CT.

CONTEXT: Heat acclimation (HA) and body cooling during exercise in the heat both help to mitigate the rise in body temperature; however, the effects of HA and hand cooling combined remain unexplored. OBJECTIVE: To determine the separate and combined effects of HA and hand cooling efficacy, during and after exercise in the heat. DESIGN: Randomized, counterbalanced, crossover design. …

Examining The Nature Of Socratic Citizenship: An Inquiry Into The Voegelinian Conception Of Consciousness, Emma Christine Fontenot

Master's Theses

This thesis explores Socrates as the paradigmatic citizen through Eric Voegelin’s theory of consciousness. While scholars tend to ground the source of Socrates’ civic behavior in the self, I maintain that his daimonion is the very essence of his citizenship. Illustrating that spiritual openness endows him with the highest level of consciousness within the polis, I argue that Socrates’ efforts to democratize truth are the direct result of his adherence to divine authority. In doing so, I assert that he is neither a self-interested civic actor nor an atheist. By examining Platonic philosophy through the lens of Voegelinian thought I …

Assessing Knowledge And Attitudes Of The Human Papillomavirus Infection And Vaccine Among Adolescents In Hartford, Ct, Anita C. Chandrasekaran

Master's Theses

No abstract provided.

The Impacts Of Youth Conservation Corps On Participants: A Multi-Method Examination 2015, Nicholas Justin Prechel

Master's Theses

The purpose of this study was to examine the benefits that participants receive from serving in youth conservation corps. The entire population of one youth conservation corps was selected to participate in the study during the summer of 2012 trail work season. The study utilized a mixed-method approach that included a one-time pre/posttest with a retrospective pretest adapted from the American Camp Association’s Youth Outcomes Battery (YOB) and an open ended interview session. Of the 109 participants in the field at the time, 101 chose to participate in the quantitative survey. The YOB tested four areas: independence, responsibility, teamwork, and …

The Relationship Between Motivation And Volunteer Satisfaction In Conservation Programs 2015., Raena Blumenthal

Master's Theses

Conservation leisure service organizations are relying more heavily on volunteers to sustain their services and protect natural resources (Strigas, 2006). However, research focusing on volunteer vacationers, those who spend money to volunteer, is still in its infancy. Drawing on functional theorizing (Bruyer & Rappe, 2007; Clary, Snyder, Ridge, Copeland, Stukas, Haugen, & Miene, 1998; Houle, Sagarin, & Kaplan, 2005; Katz, 1960; Smith, Bruner, & White, 1956), this study explored volunteer vacationers’ motivations and the relationships between motivations to volunteer, satisfaction with the volunteer vacation experience, and inclinations to volunteer in the future (in both local and nonlocal settings). The study …

Eight Degree Of Freedom Vehicle Model With Pitch, Yaw, Tire Control And Sensor Inputs, Sean T. Hirtle

Master's Theses

This research focuses on the development of an eight degree of freedom vehicle model in the MATLAB computing language. Its purpose is to provide flexibility in the modeling and implementation of signal inputs and crash avoidance logic while maintaining accuracy in the physics of the vehicle’s motion. Firstly, the equations of motion for the bodies involved under a reasonable set of assumptions were developed. Next the model was translated to computer code. By writing the model in SimuLink with *.m files, the modularity of the code is enhanced. To validate the model, several well defined tests were simulated.

To establish …

Synthetic Aperture Radar: Rapid Detection Of Target Motion In Matlab, Daniel S. Kassen

Master's Theses

Synthetic Aperture Radar (SAR) has come into widespread use in several civilian and military applications. The focus of this paper is the military application of imaging point targets captured by an airborne SAR platform. Using the traditional SAR method of determining target motion by analyzing the difference between subsequent images takes a relatively large amount of processing resources. Using methods in this thesis, target motion can be estimated before even a single image is obtained, reducing the amount of time and power used by a significantly large amount. This thesis builds on work done by Brain Zaharri and David So. …

Evaluating The Effectiveness Of Cranial Molding For Treatment Of Positional Plagiocephaly Using Finite Element Analysis, Maziyar Keshtgar

Master's Theses

Since the advent of recommendations for placing infants in the supine position during sleep to reduce the incidence of sudden infant death syndrome, clinicians have noted an increase in the frequency of cranial asymmetry due to deformation of suture sections of the infants’ skulls as a result of constant concentrated stress in one area at the back of their head. This specific form of cranial deformation is known as positional plagiocephaly and its rate of occurrence has increased from 0.3% in 8.2% within the past 30 years.

Current treatments and methodologies for preventing and correcting positional plagiocephaly such as stretching …