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Zircon Trace Element Variation From Mono Craters (California) Ashes And Domes As Recorders Of Temporal Changes In The Rhyolite Magma System, Natalie D. Baker

Master's Theses

The Pleistocene to Holocene Mono Craters in eastern California comprise at least 28 high-silica rhyolite domes, lava flows and tephra cones. To examine the geochemical evolution of the magma system, trace elements were analyzed on crystal rims of zircons separated from juvenile pumice clasts from 5 ashes in the correlative Wilson Creek Formation (spanning from 62 to 21 ka) and from 3 rhyolite domes (21, 12.5, and 7 ka). Rare earth element (REE) patterns show similar overall shapes with prominent negative Eu anomalies, indicative of similar geochemical environments of zircon crystallization, but variation in key trace elements and ratios indicate …

Climate-Driven Insect Herbivory In Mixed Coast Live Oak Woodlands Within The Mt. Hamilton Range, Santa Clara County, Michelle Domocol

Master's Theses

Climate change is expected to dramatically alter and destabilize critical functions of oak woodlands (Quercus spp.) in California. Oak woodlands support hundreds of vertebrate species and thousands of native insect species. Climate-driven changes in annual temperature, annual rainfall, and spatial climatic variability may increase insect herbivore pressures on mixed coast live oak (Quercus agrifolia) woodlands. The Mt. Hamilton Range of Santa Clara County, California offers a unique matrix to study oak-insect herbivore relationship using elevation as a proxy for climate change. This thesis research assessed the relationship between lepidopteran herbivory and coast live oak with insect surveys and the laboratory …

Relationship Between Habitat Variables And Leopard Shark (Triakis Semifasciata) Population Trends In The South San Francisco Estuary, Patrice Frazier

Master's Theses

The San Francisco Estuary (the Estuary) supports a diversity of native marine species, including the leopard shark (Triakis semifasciata). As the human population has increased in the Bay Area, elasmobranchs have simultaneously been subjected to habitat loss and changes in hydrology. On a large scale, global climate change is also affecting the Estuary's water quality. There is little research on the long-term population size of leopard sharks in the Estuary. Leopard shark catch data collected by the Marine Science Institute (MSI) and water quality data from the United States Geological Survey (USGS) from 1998 to 2017 were analyzed to assess …

Observations Of Fire Behavior On A Grass Slope During A Wind Reversal, Dianne Hall

Master's Theses

This experiment studied fire-atmospheric interactions and wildland fire behavior on a slope. A grass slope was instrumented with both in situ and remote instruments to record both meteorological conditions and the fire behavior. A headfire was lit and allowed to burn upslope through the instruments. The data collected were analyzed to determine the fire behavior, specifically fire spread (direction and rate) and flame characteristics (length, height, and angle). During the first several minutes of the experiment, fire behavior was as expected with an upslope rate of spread at 0.1 m s-1 and flame lengths between 1 m and 4 m. …

Expression And Purification Of Snake Antivenom Peptide In Pichia Pastoris, Israel Juarez Contreras

Master's Theses

It has been shown that a peptide of the first 10-15 N-terminal amino acids of the lethal toxin neutralizing factor (LTNF) protein found in opossums (Didelphis spp.) holds promise as a low-cost therapy for snake envenomation. To date, the 11-mer has been expressed in E. coli and shown to neutralize snake venoms. However, possible endotoxin concerns warrant an investigation into other microbial hosts. The methylotrophic yeast, Pichia pastoris, shows promise as an alternative host. Active LTNF peptide was expressed and purified in P. pastoris. This was accomplished by subcloning a tandem repeat of the first 15 N-terminal amino acids of …

The Relationship Between Flexible Work Arrangements And Work-To-Family Conflict: The Role Of Self-Control, Michelle Ching Klinker

Master's Theses

The purpose of the current study was to examine the relationship between flexible work arrangements and work-to-family conflict. Previous research has not yet examined the possible moderating impact of personal characteristics on this relationship. Therefore, this study also examined self-control as a moderator of the relationship between flexible work arrangements and employees’ experience of work-to-family conflict. A total of 131 participants participated in an on-line survey. Results showed that those who had flexplace and flextime available to them in their organizations tended to experience less work-to-family conflict than those who did not have flexplace and flextime available to them. Furthermore, …

The Top-Down Influences Of Characteristic Sounds On Visual Search Performance In Realistic Scenes, Ghazaleh Mahzouni

Master's Theses

The purpose of this experiment was to investigate whether meaningful sounds can facilitate visual search performance in the context of realistic scenes. It also aimed to determine whether the stimulus onset asynchrony (SOA) of sound and picture is a significant factor in enhancing performance. A 3 X 4 X 2 within subject design was used with independent factors sound congruency (congruent, incongruent and white noise), SOA (-1000, -500, 0, 300 ms), and target presence (present and absent). Participants were 55 (34 female and 21 male) college aged students at San Jose State University. On each trial participants were presented with …

Synthesis And Study Of Verdazyl Stable Free Radical Substituted Oligothiophenes For Magnetoresistive And Spintronic Properties, Amir Shakouri Mansouri

Master's Theses

Interest in spin polarizing materials and their application in electronic devices in the field of spintronics has been steadily growing in recent years. The development of wholly organic spin polarizing materials has been of particular interest due to the material flexibility, solution processing, synthetic modifiability, and longer spin lifetimes of organics compared to inorganic analogs. One class of organic compounds with significant room for exploration is polyconjugated π systems coupled with stable radicals. We have explored the synthesis of oligothiophenes substituted with verdazyl stable free radicals with differing thiophene chain lengths, through a series of halogenation, borylation, and palladium catalyzed …

Electrical Characterization Of Blood Clots, William Mcgrath

Master's Theses

This work reports the use of dielectric spectroscopy to study blood and blood clots. A test setup was developed and electrode behavior was characterized with water and salt solutions. By measuring changes in electrical permittivity, trends differentiating clotting and non-clotting blood were identified. Non-clotting blood exhibited an increase in normalized permittivity at high frequencies that is credited to the sedimentation of red blood cells (RBCs) in static blood samples. Clotting blood was found to show a decrease in permittivity after some time at high frequencies. This is associated with the aggregation of red blood cells. Platelet rich plasma (PRP) and …

The Deformability Of Red Blood Cells In Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (Me/Cfs), Brendan Robert Schmidt

Master's Theses

Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a disease that causes profound fatigue in its sufferers as well as loss of concentration, headaches, and sleep abnormalities. Unfortunately, the disease is poorly diagnosed, and etiology is not known. Although the ME/CFS patients do not show anemic readings, and their arterial partial pressure is normal, it is possible that their extreme post-exertional malaise stems from poor microvascular perfusion and oxygenation. Previous studies have indicated that the red blood cells (RBCs) in ME/CFS patients show evidence of oxidative damage. We hypothesized that the RBC deformability metrics can serve as a reliable biomarker of ME/CFS …

Evaluating Tropical Tropospheric Ozone And Water Vapor In Merra-2, Era-Interim, And Cam-Chem Using Aircraft Observations From The Western Pacific, Kathryn Steinmann

Master's Theses

Tropospheric ozone (O3) negatively is a greenhouse gas, affecting global climate. To improve climate predictions, the behavior of O3 and the mechanisms affecting its distribution must be understood and accurately represented in model simulations. This study evaluates O3 and water vapor (H2O) observations from the Convective Transport of Active Species in the Tropics (CONTRAST) campaign with data from the National Center for Atmospheric Research’s (NCAR) Community Atmospheric Model with Chemistry (CAM-Chem), the Modern-Era Retrospective Analysis for Research and Applications version 2 (MERRA-2), and the European Centre for Medium-Range Weather Forecast (ECMWF) Re-Analysis-Interim (ERA-Interim). In the tropical middle troposphere, CAM-Chem shows …

High-Throughput Screening Of A Metagenomic Library Using A Novel E. Coli Chip For Discovery Of Antibiotic Resistance Genes, Richard Paul Manarin Tiongco

Master's Theses

The growing prevalence of antibiotic resistance is one of the greatest challenges facing humankind today. The Centers for Disease Control and Prevention (CDC) have estimated that about 2 million people in the US each year develop an infection caused by antibiotic-resistant bacteria, and about 23,000 people die. To combat this growing crisis, efforts geared toward the discovery of novel compounds, such as antimicrobial peptides (AMPs), have spurred. However, current approaches for identification of such compounds have proven to be costly, time-consuming and ineffective. This problem underscores the need for a new approach, one that is fundamentally different from traditional methods …

Association Of Food Pharmacy Participation With Type Ii Diabetes Risk Factors, Breanne Vinogradoff

Master's Theses

Food insecurity is defined as a lack of access to enough food for a healthy lifestyle and has been found to lead to higher prevalence of type 2 diabetes (T2DM). In recognition of this relationship, many safety-net clinics and food banks have introduced “food pharmacies.” The term “food pharmacy” may be used to describe a treatment model that focuses on provision of disease-specific, medically appropriate food. This observational study examined data from a food pharmacy in the San Francisco Bay Area to determine if program participation improved clinical measures of T2DM status or risk, namely glycated hemoglobin (HbA1c), fasting blood …

Modeling, Simulation, And Validation Of Process-Structure-Property Relationships In Fused Filament Fabrication, Aaron Grant

Electronic Theses and Dissertations

As additive manufacturing (AM) grows in popularity, the need for better simulation tools to predict the process-structure-property relationships of AM parts becomes ever more necessary to employ the technology in design of functional parts with varying degrees of complexity and performance requirements. Many simulation tools and techniques have been developed that aim to achieve this goal, and the main purpose of this research is to explore how well different simulation tools and modeling approaches can capture various AM-specific features such as inter-raster and end-of raster voids, and residual stresses induced by dissimilar rates of thermal expansion. Process simulation of fused …

Comparing Levels Of Environmental Literacy Between Stars- And Non-Stars-Rated Universities, Analisa Kathleen Campos

Master's Theses

The Sustainability Tracking, Assessment, and Rating System (STARS) is a program that measures university sustainability levels. STARS ranks university campuses based on the number of points received from individual specifications such as green buildings, access to mass transit, number of environmental courses, and more. Therefore, the rank a school receives translates directly to its level of sustainability as an institution. Currently, it is unknown if there is a relationship between a campus’s STARS-rating and individual students’ environmental literacy (EL). The purpose of this project was to analyze the impacts of university’s sustainable features on student EL. Surveys were administered to …

Using Blockchain Technology For The Organ Procurement And Transplant Network, Utsav Jain

Master's Theses

The organ donation system in the United States is centralized and difficult to audit by the general public. This centralized approach may lead to data integrity issues in the future. The Organ Procurement and Transplant Network (OPTN) was built and maintained by a non-governmental organization called the United Network for Organ Sharing (UNOS) under its proprietary UNet(SM) umbrella platform. This platform is made up of proprietary closed source software and does not provide the general public easy access to the organ transplant data for auditing. This study investigates the feasibility, challenges, and advantages of a blockchain-based OPTN.

A prototype of …

The Effects Of A 6-Week Group Meal Prep Program On The Frequency Of Consumption Of Home-Cooked Meals, Shannon Mendez

Master's Theses

Consumption of food away from home is associated with higher caloric intake and poorer diet quality compared to home-cooked food. The advance quantity meal prep (AQMP) program is a group-based program developed to increase the frequency of consumption of home-cooked meals. The AQMP pilot study was a pre-experimental 6-week intervention aimed at analyzing the effects of the program on frequency of consumption of home-cooked meals, cooking attitudes, cooking self-efficacy, and anthropometric measures. Ten study participants met once a week at a commercial kitchen to prepare and package lunches, dinners, and snacks for the work week. A survey was administered and …

Summer Habitat Used By American Kestrels In Santa Clara County, California, Nicole Tomes

Master's Theses

Urbanization can be a primary source of the loss of native species populations by causing habitat loss, fragmentation and land conversion (Tilman et al., 2001; Krauss et al., 2010; Marzluff, 2001). Birds of prey, which are mid or top carnivores, are especially at risk from the loss of habitat that can occur on both the breeding and wintering grounds. Raptors can be considered environmental indicators of habitat degradation because of their small populations, low population densities, and high position in local food webs. This research investigated the habitat preference of the American Kestrel (Falco sparverius) (kestrel), a widely distributed raptor, …

Investigation Of Membrane Protein Dynamics Using Correlative Single-Particle Tracking And Super-Resolution Microscopy Combined With Bayesian Inference Of Diusion In Arbitrary Landscapes, Hanieh Mazloom Farsibaf

Physics & Astronomy ETDs

Many experiments have shown that the diffusive motion of lipids and membrane proteins are slower on the cell surface than those in artificial lipid bilayers or blebs. One hypothesis that may partially explain this mystery is the effect of the cytoskeleton structures on the protein dynamics. To test this hypothesis, we designed a high-speed single particle tracking microscope and use a hybrid tracking and super-resolution approach on the same cell. We labeled the high-affinity FceRI receptor as a transmembrane protein and GPI-anchored proteins as an example of outer leaflet protein in Rat Basophilic Leukemia (RBL) cells and tracked these membrane …

Predicting Switch-Like Behavior In Proteins Using Logistic Regression On Sequence-Based Descriptors, Benjamin Nathan Strauss

Master's Theses

Ligands can bind at specific protein locations, inducing conformational changes such as those involving secondary structure. Identifying these possible switches from sequence, including homology, is an important ongoing area of research. We attempt to predict possible secondary structure switches from sequence in proteins using machine learning, specifically a logistic regression approach with 48 N-acetyltransferases as our learning set and 5 sirtuins as our test set. Validated residue binary assignments of 0 (no change in secondary structure) and 1 (change in secondary structure) were determined (DSSP) from 3D X-ray structures for sets of virtually identical chains crystallized under different conditions. Our …

Non-Invasive Hyperglycemia Detection Using Ecg And Deep Learning, Renato Silveira Cordeiro

Master's Theses

Hyperglycemia is characterized by an elevated level of glucose in the blood. It is normally asymptomatic, except for an extremely high level, and thus a person can live in that state for years before the negative - sometimes irreversible - health impacts appear. Unexpected hyperglycemia can also be an indication of diabetes, a chronic disease that, when not treated, can lead to serious consequences, including limb amputations and even death. Therefore, identifying hyperglycemic state is important. The most common and direct way to measure a person’s glucose level is by directly assessing it from a blood sample by pricking a …

Identifying The Leadership Skills Needed To Develop The Competencies To Lead In A Postcrisis Organization: A Delphi Study, Paul Turgeon

Dissertations

Purpose: Organizational leaders play a pivotal role in postcrisis activities. There is abundant research in the actions of leaders in a crisis; however, there is limited research regarding the leadership competencies required postcrisis, and a gap remains in knowing which leadership skills are needed postcrisis. The purpose of this Delphi study was to identify the leadership skills needed to promote organizational resilience, to act with integrity, and to possess a learning orientation of organizational leaders in the postcrisis phase.

Methodology: This study used a 3-round Delphi technique to identify the leadership skills that support the possession of the competencies needed …

Disrupting The Heteronormative Mindset In Teacher Preparation Through Inclusive Children's Literature, Denise I. Donahue

USF Tampa Graduate Theses and Dissertations

Because of discrimination that presents itself through bullying based on identity, and the lack of positive LGBTQIA+ representation within classroom lessons, there is a need for a higher quality of preparation for teachers in order to create inclusive environments.

All teachers, particularly new teachers, need to know how to effectively work with diverse learners to meet their needs academically, emotionally and socially. This includes preparing teachers to instruct students and work with families who include LGBTQIA+ members. LGBTQIA+ students are often marginalized, discounted, harassed or invisible. (Kosciw, Greytak, Zongrone, Clark, & Truong, 2018). There is a need for a higher …

Diasporic Strangers In The Mirror: Ever-Evolving Identity And The Immigrant Experience, Meriam Metoui

Theses and Dissertations

This text explores the disparity between immigrant parents and their American born or raised children and show the chasm of misunderstanding between generations navigating different national and cultural contexts found in novels such as The Joy Luck Club, The Namesake, Americanah, and Everything I Never Told You.

The Women Against Violence Experiment (W.A.V.E.): Social Journalism Solutions To Help Immigrant Women Protect Themselves Against Abuse, Isadora Varejao

Capstones

The Women Against Violence Experiment (W.A.V.E.) is the product of a yearlong investigation about information gaps in New York’s Latina immigrant community. I interviewed two Brazilian-American immigration attorneys serving the Brazilian community and several Brazilian women living in New York, including victims and survivors of domestic violence, and found that immigrant women have little or no knowledge about the different forms of abuse to which they are vulnerable. No matter who perpetrates the abuse -- a partner, a boss, a landlord -- women don’t know about the resources available to protect their rights, such as free services and U.S. legislation. …

A Qualitative And Quantitative Inquiry Into The Learner Engagement Construct, Charles Dye

Doctoral Dissertations

The present study seeks to develop a situated construct of learner engagement within an instructional experience. Despite compelling potential benefits to instructional practice, extant learner engagement research has been limited to either within-the learner constructs or adding a simplistic behavioral component to a model and largely discounting the effects of diverse learning environments, instructional techniques and educational technology, and their collective effects on the learner’s attitudes, behaviors, perceptions, and performance while learning. The present study seeks to develop a construct of learner engagement applying a situated cognition theoretical framework to evaluate the effects of diverse learning environments on the …

Defining Art Aesthetically : A Revision Of Iseminger's New Aestheticism, Yeung Yu

Lingnan Theses and Dissertations (MPhil & PhD)

My thesis attempts to provide an aesthetic definition of art.

The thesis is divided into three parts. The first part is a summary of the different attempts in defining art in contemporary analytic philosophy, beginning with a discussion of Morris Weitz’s famous paper “The Role of Theory in Aesthetics”, in which he appealed to Wittgenstein’s “family resemblance” idea while rejecting traditional essential definitions. His attempt has led to the appearance of contemporary essential definitions, whereby art is defined through different relational properties. This is followed by a critically review on Weitz’s claims and those definitions.

The second part focuses on …

Frontline Nurse Leader Orientation Programs: A Review Of Literature, Shanelle Renee House

DNP Qualifying Manuscripts

Abstract

Aim This manuscript aims to synthesize the literature on the skills and knowledge needed by frontline nurse leaders and effective orientation or training programs developed to meet those needs.

Background Frontline nurse leaders are often promoted to positions of leadership due to their strong clinical skills; they often do not receive formal training.

Evaluation A literature search was conducted to identify and critically appraise journal articles that discuss orientation and training programs offered to frontline nurse leaders.

Key Issues The literature review revealed that frontline nurse leaders require a variety of skills and knowledge to be successful. Orientation and …

Taking Advantage Of Second Chances Through Reassessment, Benjamin D. Lee

Theses and Dissertations

A critical factor in Skills-Based Reporting is the opportunity for students to reassess in an effort to enhance learning. In this middle school, however, few students were taking advantage of the opportunity to reassess. The study focused specifically on investigating how Skills-Based Reporting impacted student mindset and to what extent parent involvement played a role in whether students chose to reassess or not to reassess. Students and parents from this middle-school setting shared their perceptions on Skills-Based Reporting. For use in the quantitative phase of the, a student survey was administered to each student in the middle school to collect …

The Intersection Of Deforestation And Economic Growth In The Brazilian Amazon, Victoria Oceguera

Student Theses 2015-Present

Abstract

As a result of capital gain, deforestation of the Amazon in Brazil continues. Brazilian government's insufficient efforts to mitigate and enforce the preservation of these precious forests has ledto the commodification of the Amazon. Chapter 1 uses historical and quantitative data to examine the negative impacts of deforestation on indigenous communities and climate change. Chapter2 employs economics to analyze the role of business as a crucial component of deforestation in Brazil. Chapter 3 engages politics in Brazil to discuss interactions between key actors involved in the perpetuation of deforestation. Chapter 3 examines the interactions between politics and corruption involved …