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Articles 1711 - 1740 of 18425
Full-Text Articles in Entire DC Network
Linking Social Dynamics To Private Land Management: A Study Of Prescribed Burn Associations In Northern California, Spencer R. Klinefelter
Linking Social Dynamics To Private Land Management: A Study Of Prescribed Burn Associations In Northern California, Spencer R. Klinefelter
Master's Theses
Prescribed fire is one way to improve the adaptive capacity of communities in the wildland urban interface in terms of managing wildfire risk and meeting socio-ecological goals. In California, Prescribed Burn Associations (PBAs) are a way of organizing private landowners with the goal of engaging in more widespread and frequent prescribed fires. This research uses semi-structured interviews with private landowners, along with key informants from public agencies such as CalFire and Regional Parks, to explore PBA development and functioning in northern coastal California. Sonoma and Marin counties were chosen as the primary study sites as they are represented by the …
Quantum Mechanics And Dynamical Models For Finite Unlabeled Simple Graphs, Nathan M. Lewis
Quantum Mechanics And Dynamical Models For Finite Unlabeled Simple Graphs, Nathan M. Lewis
Master's Theses
This thesis constructs quantum mechanical theories of finite simple graphs for both labeled and unlabeled graphs.These theories may provide a description for discrete spacetime in a quantum gravity theory. Finite simple graphs and their properties are introduced. The first and second quantization of the standard quantum mechanics of particle systems are reviewed. A quantum mechanical theory of graphs similar to first quantization of standard quantum mechanics is developed via a correspondence of graph edges to particles in particle systems. An algorithm for constructing quantum states of graphs which is independent of graph vertex labeling is developed. It builds antisymmetric graphstates …
Detecting The Onion Routing Traffic In Real-Time By Using Reinforcement Learning, Dazhou Liu
Detecting The Onion Routing Traffic In Real-Time By Using Reinforcement Learning, Dazhou Liu
Master's Theses
Anonymous networks have been popularly utilized to protect user anonymity and facilitate network security for a decade. However, such networks have been a platform for adversarial affairs and various network attacks including suspicious traffic generators. As a result, detecting anonymous network traffic is one critical task to defend a network against unpredictable attacks. Many new methods using machine learning and deep learning techniques have been proposed. However, many of them rely heavily on a vast amount of labeled data and have complicated architectures. Since network traffic always fluctuates under different network environments, those techniques may degrade in performance due to …
Characterization And Evaluation Of Catalytic Activity Of Small Molecule Copper Complexes For Metallopolymer Design, Brenda Lu
Master's Theses
Catalysis is one of the driving forces in designing greener chemical processes for essential real-world applications. Enzymes, Nature’s catalysts, are known for their high selectivity, use of readily available metals and reagents, and ability to work under physiological conditions; three important qualities that synthetic chemists would like to mimic in their small molecule metal catalysts. Though most small molecule metal catalysts fall short of enzyme-like activity, we hypothesize that using a polymer scaffold as a secondary coordination sphere mimic around the metal complex will affect the microenvironment (steric and electronic) and enable enzyme-like activity. Previously, we synthesized ligand precursors and …
Partnering With International Peers To Promote Young Children’S Social And Emotional Learning: Students’ Experiences During An International Service Learning Program, Danica D. Mavroudis
Partnering With International Peers To Promote Young Children’S Social And Emotional Learning: Students’ Experiences During An International Service Learning Program, Danica D. Mavroudis
Master's Theses
International Service Learning (ISL) has been used increasingly across fields of study in higher education to enhance student’s learning outside the classroom. ISL programs often encourage students to reflect on their experience to promote experiential and transformative learning. Previous research on ISL has found benefits to students’ professional and personal development. While the process may be helpful to participating students, there may be a lack of lasting benefit to the host community. There also is a gap in the literature of how mental wellness services could be delivered using ISL. In hopes to extend program benefits and provide mental wellness …
Optimizing Soluble Recombinant Expression Of The Aedes Aegypti Early Trypsin Protease, Neomi Millan
Optimizing Soluble Recombinant Expression Of The Aedes Aegypti Early Trypsin Protease, Neomi Millan
Master's Theses
The female Aedes aegypti mosquito is a primary vector for the transmission of blood–borne viral pathogens such as Chikungunya, Zika, Yellow Fever, and Dengue. The female mosquito will become infected with these pathogens through the uptake of a blood meal from an infected host. The midgut digestive enzymes are required to digest the blood meal to obtain necessary nutrients needed for the completion of the gonotrophic cycle. Blood meal digestion is biphasic and digestive enzymes are expressed at different time points after uptake of a blood meal. The focus of this study is on an early phase protease known as …
Intrinsic Motivation By The Principles Of Non-Linear Dynamical Systems, Phu C. Nguyen
Intrinsic Motivation By The Principles Of Non-Linear Dynamical Systems, Phu C. Nguyen
Master's Theses
The design of appropriate control rules for the stabilization of dynamical systems can require quite substantial domain knowledge. Modern AI methodologies, such as Reinforcement Learning, are often used to mitigate the need for such knowledge. However, these can be slow and often rely on at least some hand-designed reward structure, and thus human input, to be more effective. Here, we propose an alternative route to construct rewards requiring only minimal domain knowledge, essentially relying on the structure of the dynamical system itself. For this, we use truncated Lyapunov exponents as rewards to calculate the stabilizing controller from samples. Concretely, the …
Investigating The Misinformation Effect And Physical Activity In An Online Study, Victoria C. Paoloni
Investigating The Misinformation Effect And Physical Activity In An Online Study, Victoria C. Paoloni
Master's Theses
The purpose of this study was to explore the relationship between physical activity and susceptibility to false memory. Among the many benefits of physical activity are brain changes and cognitive improvements. However, few studies have examined the effects of physical activity on false memory, and none have investigated the relationship between physical activity and susceptibility to false memories generated via the misinformation effect. This study was conducted to address that gap and was also among the first to use a misinformation paradigm in an online study. It was hypothesized that greater amounts of weekly physical activity among young adults would …
Interdependence Of Salt Concentration And Filler Particles On Crystallinity And Mechanical Behavior Of Peo-Litfsi Electrolytes For Lithium-Ion Batteries, Valeria Perez
Master's Theses
Developing composite polymer electrolytes is crucial for enhancing the safety, energy density, and performance of lithium-ion batteries. While it is widely accepted that introducing filler particles in PEO-based electrolytes can reduce crystallinity and enhance ionic conductivity, this conventional understanding applies primarily to electrolytes with high lithium salt concentrations. The hypothesis of this investigation is that the crystallinity change induced by LLZTO ceramic particles in PEO-LiTFSI electrolytes is contingent on the EO:Li molar ratio. This hypothesis is interrogated by measuring changes in crystallinity, spherulite morphology, and stiffness of composite polymer electrolytes with two different EO:Li molar ratios using differential scanning calorimetry, …
Bosons In Anti De Sitter Spacetime, Thi Khanh Linh Pham
Bosons In Anti De Sitter Spacetime, Thi Khanh Linh Pham
Master's Theses
I am extremely grateful to Dr. Kassahun Betre for his support and guidance throughout my thesis journey. His wisdom, knowledge, and encouragement have been invaluable to me. His willingness to take me on making this project and the collaborative friendship is the highlight of my master’s program. Many thanks to Dr. Curtis Asplund and Dr. Ehsan Khatami for participating on my committee and with regard to their valuable feedback on my thesis draft, ensuring the completion of this work. Finally, I am grateful to my family for their unwavering love and all the support and absolute patience over the years …
Controllability-Constrained Deep Neural Network Models For Enhanced Control Of Dynamical Systems, Suruchi Sharma
Controllability-Constrained Deep Neural Network Models For Enhanced Control Of Dynamical Systems, Suruchi Sharma
Master's Theses
Control of a dynamical system without the knowledge of dynamics is an important and challenging task. Modern machine learning approaches, such as deep neural networks (DNNs), allow for the estimation of a dynamics model from control inputs and corresponding state observation outputs. Such data-driven models are often utilized for the derivation of model-based controllers. However, in general, there are no guarantees that a model represented by DNNs will be controllable according to the formal control-theoretical meaning of controllability, which is crucial for the design of effective controllers. This often precludes the use of DNN-estimated models in applications, where formal controllability …
Behavorial Response Of Diving Northern Elephant Seals (Mirounga Angustirostris) When Exposed To Predator Calls, Daphne M. Shen
Behavorial Response Of Diving Northern Elephant Seals (Mirounga Angustirostris) When Exposed To Predator Calls, Daphne M. Shen
Master's Theses
Understanding how marine mammals respond to and recover from acoustic stressors is crucial if underwater noise increases. The use of an animal-borne biologger that combines a speaker with a motion sensor allows for the collection of whole-dive and fine-scale data over repeated exposures under identical experimental parameters. This study determined whether northern elephant seals (Mirounga angustirostris), a model for deep-diving marine mammals, exhibited a stereotypical behavioral response when exposed to killer whale whistles, an acoustic stressor. I examined changes in dive characteristics, measured duration of altered response, and observed behavior in response to repeated exposures. When exposed to the playback …
Micro-Scale Laser-Induced Fluorescence Thermometry For Multiphase Flow In Porous Media, Samuel J. Simmons
Micro-Scale Laser-Induced Fluorescence Thermometry For Multiphase Flow In Porous Media, Samuel J. Simmons
Master's Theses
In this thesis the use of Laser-Induced Fluorescence (LIF) thermometry was evaluated as a temperature measurement for multiphase flow in porous media. This optical temperature measurement technique utilizes the temperature-dependent emissive properties of fluorescent dyes to measure temperature. This research evaluates the accuracy, spatial resolution, and temporal resolution of LIF thermometry compared to existing temperature measurements. In this research water-soluble and oil-soluble fluorescent dyes are evaluated in terms of their temperature sensitivity. The ability of these dyes to measure temperature is compared to an Ansys FEA simulation of a fixed temperature gradient. For multiphase flow, the fluorescent dyes were both …
The Statue That Started It All: The Aphrodite Of Knidos, Amereece Sterba
The Statue That Started It All: The Aphrodite Of Knidos, Amereece Sterba
Master's Theses
In this thesis, I argue that The Aphrodite of Knidos statue has had a significant impact on the perception of the female nude in art throughout history because of this statue's iconic nature; it lent itself to be easily copied by artists, which has allowed artists to alter the Knidian image for cultural purposes. This thesis explores why this statue became the canon in Antiquity and continued to be replicated in subsequent eras. The first chapter examines how Praxiteles created the formula that would become the canon. By looking at Knidian and other ancient statues that take inspiration from the …
Daily Synoptic-Scale Influences On Weather-Dependent Renewable Energy Supply And Demand In Hypothetical Fully Electrified North American Interconnections, Howard Tang
Master's Theses
Energy grids around the world are becoming increasingly penetrated by renewable energy sources, resulting in progressively variable energy generation. This study aims to provide a fundamental basis for observing atmospheric conditions in relation to weather-dependent renewable energy supply, where daily synoptic-scale influences are considered in hypothetical fully electrified North American interconnections. Three renewable energy types – 100% wind energy, 100% solar energy, and a 50-50 split of wind and solar energy – are scaled to meet weather-driven energy demand on average in three interconnections, namely the Western Interconnection, the Eastern Interconnection, and a hypothetical combined interconnection composed of the Western, …
How Should I Fall Apart For You? A Critical Autoethnography Exploring Embodied Trauma, Julie R. Terebkov
How Should I Fall Apart For You? A Critical Autoethnography Exploring Embodied Trauma, Julie R. Terebkov
Master's Theses
Defining and naming trauma is a layered and nuanced process but hegemonic medical and media discourses have forced trauma into a system of binary terms and categories. This study begins with an exploration of how hegemonic discourses define trauma and how focusing on embodied trauma disrupts the limiting language presently available. I use Lisa Blackman’s (2008) work on embodiment to explore how our bodies move, take on, and shed trauma as a form of disruption to oppressive language. Blackman’s theory is used to examine my own embodied trauma through a critical autoethnography using prose and narrative I developed in narrative …
An Exploration Of The Low Prevalence Effect During Phising Detection, Sherry J. Wei
An Exploration Of The Low Prevalence Effect During Phising Detection, Sherry J. Wei
Master's Theses
Phishing attacks are attempts to obtain individual credentials or other private information through deception, usually in email format. As the Internet becomes increasingly intertwined with everyday lives, such attacks are on the rise, threatening individuals and businesses alike. Existing anti-phishing training measures fail to address possible prevalence effects on detection performance: in tasks where targets appear rarely, participants have heightened miss rates. This low prevalence effect could be present in phishing detection because phishing emails are observed much less frequently than legitimate emails. Emerging research has reported observing heightened miss rates as a function of phishing email rarity. This study …
Cloud Phase Distribution At A Global-Scale And The Governing Factors Using Satellite And In-Situ Airborne Observations, Dao Wang
Master's Theses
Cloud thermodynamic phase distributions play a crucial role in accurately representing cloud radiative effects and feedback in a changing climate. The partitioning of cloud thermodynamic phases (ice, liquid, and mixed phase) significantly influences Earth's surface temperature and its ability to mitigate the impact of global warming. Satellite-based cloud phase data are frequently used for the evaluation of global climate models, yet validation of them against in-situ observations is still lacking. This study examines global cloud phase distributions and their determinant factors by validating three satellite-based cloud phase products against an extensive in-situ airborne dataset. CALIPSO exhibits the most similar ice …
Development Of Inattention And Executive Dysfunction In Youth With Spina Bifida: Condition Severity Variables As Predictors, Allison D. Payne
Development Of Inattention And Executive Dysfunction In Youth With Spina Bifida: Condition Severity Variables As Predictors, Allison D. Payne
Master's Theses
Spina bifida (SB) is associated with neurologic impairments that increase individuals’ risk for neuropsychological deficits, particularly inattention and executive dysfunction. While extant literature has yet to examine the development of inattention in youth with SB, some research suggests that these youth may not experience the age-related improvements in executive dysfunction seen in the general population. SB is a heterogeneous condition; thus, it is important to consider variability in condition severity when examining outcomes over time in youth with SB. Lesion level and shunt status are commonly used as indicators of SB severity and have been significantly associated with variability in …
Lactobacillus Metabolite Nc As An Inflammation Inhibitor, Drew Hahnnah Landrowski
Lactobacillus Metabolite Nc As An Inflammation Inhibitor, Drew Hahnnah Landrowski
Master's Theses
The human body contains a diverse ecosystem of microbes. Commensal bacteria have numerous mutually-beneficial relationships with their host. Not only do they assist in digestion and gut homeostasis, they are critical for development and function of the immune system. As such, hosts and microbes alike have evolved mechanisms to foster symbiosis. Gut barrier function, toll-like receptor signaling, and metabolites are all examples of how hosts interact with microbes to promote this mutually-beneficial relationship. Metabolites from commensal bacteria promote the generation of regulatory T-cells, capable of ameliorating inflammation. A number of inflammatory, allergic, and autoimmune conditions are associated with dysbiosis. Therefore, …
Targeting The Subacute Progression Of Hippocampal Cellular Senescence Following Repetitive Mild Traumatic Brain Injury, Jacob Edward Exline
Targeting The Subacute Progression Of Hippocampal Cellular Senescence Following Repetitive Mild Traumatic Brain Injury, Jacob Edward Exline
Master's Theses
Repetitive mild traumatic brain injury (rmTBI) increases an individual’s risk for developing persistent deficits in recognition memory with symptoms experienced by up to 30% of rmTBI patients. Cellular senescence has been suggested as an underlying mechanism of persistent rmTBI symptoms; however, the subacute progression of cellular senescence following rmTBI has not been evaluated. Furthermore, the use of subacute testosterone administration to treat persistent recognition memory deficits and the cellular and molecular underpinnings has yet to be well characterized. Our lab utilizes a 5-hit closed-head rmTBI rat model to induce deficits in recognition memory and determine the effects of subacute testosterone …
Building Strength Versus Getting Lean: An Analysis Of The Gendered Nature Of Fitness In Crossfit, Barre, And Personal Training, Margaret M. Jones
Building Strength Versus Getting Lean: An Analysis Of The Gendered Nature Of Fitness In Crossfit, Barre, And Personal Training, Margaret M. Jones
Master's Theses
Like many industries in contemporary society, the fitness sector is heavily gendered, andthus needs to be examined as a sector that both creates and reinforces gendered bodies. Building on previous single-method studies, I utilized a multi-methods approach of ethnography and interviews to analyze organizational and individual experiences with gender and fitness. Using West and Zimmerman’s concept of “doing gender,” I analyzed fitness organizations as a setting where gender and inequality are actively reproduced. By analyzing three fitness organizations with different gendered audiences (a barre studio, a CrossFit gym, and a personal training facility) I looked at how gender and fitness …
Investigating Putative Toxin-Immunity Pairs From A New Class Of Rhs Proteins In Pseudomonas Aeruginosa, Syed Faieq Imam
Investigating Putative Toxin-Immunity Pairs From A New Class Of Rhs Proteins In Pseudomonas Aeruginosa, Syed Faieq Imam
Master's Theses
Pseudomonas aeruginosa is a gram-negative, opportunistic pathogen that is ubiquitous in nature, especially in human/animal impacted environments. One of the reasons for this is the arsenal of protein systems and toxins that P. aeruginosa utilizes to mold its environment to suit its needs. Recently, we discovered a novel locus in the P. aeruginosa genome, which resembles other loci that are known to mediate interbacterial competition. Our bioinformatic analysis found this locus to be enriched in a rearrangement hotspot (rhs) motif which led us to ad-interim term the three ORFs of the loci as rhsB, rhsC, and rhsI. Furthermore, we have …
Abortion, Medieval Christianity, And The Christian Far-Right: The Harms Of Rhetoric And Misconstruing The Past, Madison Givens
Abortion, Medieval Christianity, And The Christian Far-Right: The Harms Of Rhetoric And Misconstruing The Past, Madison Givens
Master's Theses
This research explores the intersection of abortion, Medieval Christianity, and the Christian far-right, with a focus on the harms of rhetoric and the misconstruing of history. The study argues that a selective reading of history is being used by the Christian far-right to justify violence against reproductive rights activists, including police brutality and mass shootings, as well as to promote forced sterilization and other forms of reproductive control. This thesis examines the harms of rhetoric and misconstruing the past in the abortion and medieval Christianity debate. By analyzing the role of language, symbols, and history in shaping the abortion debate …
Decolonizing A Settler Colonial State: How Canada And The United States Have Approached Investigations Into Indigenous Boarding And Residential Schools, Holly Jacobs
Master's Theses
Indigenous boarding and residential schools were in use for over 100 years in both Canada and the United States. Grown from numerous policies aimed at assimilation, dispossession, and genocide of the Indigenous peoples of North America, these residential schools had a particular aim: to wipe away all cultural and familial ties of every individual and to replace them with beliefs and values of white settlers. Though the schools are no longer in operation, their legacy of erasure and pain continues to affect survivors, their descendants, and Indigenous communities across both nations. This thesis looks at what the federal governments of …
Effect Of Selenof Loss In Combination With A Western Diet On Tumorigenesis, Brenna Joy Flowers
Effect Of Selenof Loss In Combination With A Western Diet On Tumorigenesis, Brenna Joy Flowers
Master's Theses
SELENOF is an understudied selenium-containing protein that has previously been postulated to behave as a tumor suppressor in the breast. Examination of patient databases showed that SELENOF levels were lowest in tumors from patients with aggressive late-stage breast cancers. Whether loss of SELENOF drives breast tumorigenesis remains to be determined. To address this question, we used juvenile female wild type or systemic Selenof knockout mice and exposed them to 7,12-Dimethylbenz[a]anthracene (DMBA), a carcinogen that replicates the multistep process of breast tumorigenesis. Previous reports have shown that loss of Selenof led to glucose and metabolic dysregulation in mice suggesting a link …
Engagement With Ethnic Practices: How Ethnic Communities Contribute To Second-Generation Asian American Assimilation, Bảo-Trân T. Nguyễn
Engagement With Ethnic Practices: How Ethnic Communities Contribute To Second-Generation Asian American Assimilation, Bảo-Trân T. Nguyễn
Master's Theses
Previous research on spatial assimilation has described ethnic enclaves as places withmany recently arrived immigrants and fewer socioeconomic resources. As immigrants become more assimilated, they move to more affluent neighborhoods in proximity to Anglos. However, recent studies on resurgent ethnicity challenge the idea of the spatial assimilation by suggesting that Asian immigrants and subsequent generations continue to live near co-ethnics, despite gaining socioeconomic status. The transition from traditional ethnic enclaves to resurgent ethnic communities or ‘ethnoburbs’ indicate shifting understandings of what ethnic communities mean to Asian Americans. Although, Asian Americans are, on average, attaining higher socioeconomic status, the emergent importance …
Investigating Structural And Biochemical Characteristics Of A Peptidase Required For Staphylococcus Aureus Virulence, Sagar Bhusal
Investigating Structural And Biochemical Characteristics Of A Peptidase Required For Staphylococcus Aureus Virulence, Sagar Bhusal
Master's Theses
Staphylococcus aureus is an opportunistic Gram-positive pathogen that transiently colonizes 30% of the population at any given time. Upon breaching host skin or mucosal barriers, S. aureus can infect and cause disease in nearly all host tissues. Once inside the host, S. aureus expresses a plethora of virulence factors, mostly regulated by the Accessory Gene Regulatory (Agr) quorum sensing system, which facilitates the evasion of immune responses or directly promotes pathogenesis. The S. aureus Agr system relies on the production of a small peptide known as an auto-inducing peptide (AIP) to control virulence gene expression in response to cell density. …
Physical Activity, Self-Determination, And Self-Conscious Emotions In Adolescents And Young Adults With And Without Autism Symptomatology, Dakota Morales
Physical Activity, Self-Determination, And Self-Conscious Emotions In Adolescents And Young Adults With And Without Autism Symptomatology, Dakota Morales
Master's Theses
Previous literature suggests that autistic individuals engage in physical activity less frequently compared to typically developing peers (Bandini et al., 2013; Jones et al., 2017). This is noteworthy because exercise interventions for autistic individuals have found that engaging in physical activity can improve motor, social, and behavioral skills (Anderson-Hanley et al., 2011; Duffy et al., 2017; Nicholson et al., 2011; Oriel et al., 2011). Thus, the present study seeks to understand what factors may promote physical activity engagement, such as self-determination motivation regulations and body-related self-conscious emotions, in adolescents and young adults with and without autism symptomatology. Participants included 51 …
How To Build A Cortex: Coordinated Assembly Of Cortical Septins And Actomyosin In The Leader Bleb, Asia Marie Paguntalan
How To Build A Cortex: Coordinated Assembly Of Cortical Septins And Actomyosin In The Leader Bleb, Asia Marie Paguntalan
Master's Theses
In confined spaces, migrating cells can undergo mesenchymal-to-amoeboid transitions by altering their cortical dynamics and adhesion with the environment. Septins frequently associate with cortical actin and non-muscle myosin (NMII), but the functional nature of these interactions remains unclear. Upon non-adhesive confinement and NMII enrichment, fibroblasts can switch to a fast, leader bleb-based mode of motility, characterized by the absence of adhesions and stress fibers and formation of a single, elongated leader bleb. During this transition, cortical actin remodeling and polarized NMII contractility drive leader bleb stabilization by generating long-range cortical flows, in coordination with changes in septin localization and assembly …