Digital Commons Network^™

Psychosocial And Neuroprediction Of Criminal Recidivism In A Sample Of Adult Female Offenders, Bethany G. Edwards

Psychology ETDs

Recidivism is costly and damaging to society. Despite the narrowing gender gap in the criminal justice system, research on female recidivism falls behind that in males. Biopsychosocial theories suggest a combination of psychosocial and neurobiological factors likely promotes criminal risk in females. This study examined the utility of various risk factors in predicting recidivism in female offenders (n = 298). Results highlight specific psychosocial risk factors (i.e., impulsive/antisocial psychopathic traits, incarceration history, substance use, education, and age) that were especially helpful in identifying females at elevated risk. A particularly novel aspect of this study was incorporation of structural and functional …

Machine Learning Techniques For Seismic Data Analysis And Explosion Monitoring, Mohammad Ashraf Siddiquee

Computer Science ETDs

The current seismic data processing pipeline is surprisingly human-dependent. With the rapid increase of seismic-sensor data availability, all manual data processing approaches fail to detect, classify, and analyze seismic activity within a reasonable amount of time. An automated, fast, and reliable seismic data processing pipeline is desired for the meaningful analysis of massive seismic datasets. In this thesis, we show how advanced time-series data-mining and machine learning techniques can be leveraged to resolve this issue. We precisely focus on seismic activity detection, classification, and inspection using our techniques that would help us better understand the surrounding earth structure, earthquake evaluation, …

Physiologically-Based Pharmacokinetics Modeling Of Colloidal Nanoparticles, Anh-Dung Le

Nanoscience and Microsystems ETDs

Physiologically-based Pharmacokinetics (PBPK) modeling—a mechanistic mathematical tool to predict biodistribution to inform drug development, requires knowledge of the physico-chemical properties of the drug in question as well as the anatomy and physiology of the organism. Unlike with molecular drugs, nanoparticle parameters often need to be estimated by fitting models to time-course data, which can result in large uncertainties in parameter estimates due to a high-dimensional parameter space. Our research addresses this challenge by offering a path to parameter insights using global sensitivity analysis. The first chapter is an overview of the PBPK model structure and mathematical framework used in our …

Fabrication And Characterization Of Carbon Nanotube Metal Matrix Composites For Use In Photovoltaic Gridline Applications, Cayla M. Nelson

Nanoscience and Microsystems ETDs

Performance reliability is crucial for photovoltaic (PV) cells in both terrestrial and space-based applications. Electrical efficiency losses over time are heavily impacted by electrical losses due to microcracks within the cell structure and metallization failure. Mechanical stresses and thermal cycling of the device can lead to fracture of the current-carrying metal (Ag) lines on the surface of the device, significantly reducing output power. Incorporating carbon nanotubes (CNTs) into PV metal lines as a reinforcement, forming a CNT/Ag metal matrix composite (MMC), enhances the electrical and mechanical performance of the device. In this work the influence of CNT/Ag MMCs were explored …

Expanded-Range Venturi Flow Meter: Development And Testing Of A 3d-Printed Flow Meter And Solid-State Valve Concept, Joseph M. Pomo

Mechanical Engineering ETDs

In this thesis, I document the design, testing and performance of a novel Expanded-Range Venturi Flow Meter (ERVFM) concept. The ERVFM combines two, parallel-configured Venturi Flow Meters (VFM) with a Solid-State Selector Valve (SSSV). The goal was to create a reliable, high-turndown ratio flow meter which directs the fluid to either Venturi tube using the inherent pressure drop of the SSSV, and without moving parts. I constructed a pumped-fluid loop test-setup and quantified the ERVFM’s performance through pressure loss and mass flow rate measurements. In addition, I used python to develop models to assist in prototype design and data-processing. My …

Fiesta And Shock-Driven Flows, Brian E. Romero

Mechanical Engineering ETDs

In this study, the interaction of a shock with various gas and particle interfaces is analyzed through simulations using a new, GPU capable, multi-species flow solver, FIESTA (Fast, Interface Evolution, Shocks, and Transport in the Atmosphere), de- veloped for this research. The cases studied include the interaction between a shock and i) a two-dimensional (2D), circular cloud of a dense gas; ii) a 2D curtain of a dense gas; iii) a three-dimensional (3D) cylinder of a dense gas, and iv) a 3D curtain of solid particles.

In simulations of a 2D gas curtain and a 3D gas column, the curtain …

Effectiveness Of The Social Behavior Mapping Intervention On The Social Communication Skills Of Adolescents With Autism Spectrum Disorder, Jessica Ann Donaldson

Special Education ETDs

The purpose of this study was to evaluate the effectiveness of Social Thinking® Social Behavior Mapping (SBM) on adolescents with autism spectrum disorder. A pretest-posttest control group design with matched sampling was used. There were 22 participants between the ages of 13 and 17 who were matched by age and IQ and then were randomly assigned to either an intervention group or to a treatment-as-usual group. Results revealed that participants made significant improvements on the SBM rating scale scores and participant-reported scores on the Social Skills subscale of the Social Skills Improvement System (SSIS; Elliott & Gresham, 2008) Rating Scales. …

Joining Of Candidate Materials For Lead-Cooled Fast Reactors, Brandon M. Bohanon

Nuclear Engineering ETDs

The lead-cooled fast reactor (LFR) is a fourth-generation reactor design characterized by high temperatures, neutron dosage, and highly corrosive and erosive environment due to high flow velocities. Therefore, materials testing must be performed to find structural and system components that withstand this harsh environment. These candidate alloys must have high-temperature creep strength, resistance to damage from fast-spectrum neutrons, and must grow protective oxide layers. FeCrAl alloys have been identified as possessing all these qualities, however, there are limitations due to erosion and the joining of these materials. In this work, mechanical and microstructural properties of base and conventionally joined FeCrAl-based …

Un-Earthing Popular Climate Narratives: Maintenance And Prophecy In Settler World, Hannah Oxford

Communication ETDs

Climate change is fundamentally rooted in facts such as rising global temperatures, carbon emissions, losses in biodiversity, etc. However new information about our changing world is translated and incorporated within the narratives we live by and give form to our personal and collective worlds. While climate change is scientific, our mitigation efforts are entirely storied. This thesis looks at popular climate narratives that frames climate change as an issue of Earthly mechanics fixable through innovative technology. The goal of this thesis is to understand the ways in which settler colonialism, as a communicable mechanism of cultural production, organizes this particular …

Reimagining Rhetorical Ability: (Dis)Embodiments Of Disabled Speakers In The Stuttertalk Podcast And The 2020 Democratic National Convention, Katherine Mulle

Communication ETDs

While communication scholars have dedicated much research towards defining and furthering effective communication, explorations of speech disability, especially from a critical lens, are largely absent in these pursuits. I conducted a critical rhetorical analysis of the (dis)embodiments of disabled speakers through examining segments from the 2020 Democratic National Convention (DNC) program that cover Joe Biden’s story as a person who stutters, and episodes of StutterTalk, a podcast created by and featuring people who stutter. Moreover, I organize this thesis around two claims: (1) As a person who stutters with certain privilege and power, Joe Biden’s DNC story further secured …

Return Migration, Human Capital, And Labor Outcomes, Avinandan Chakraborty

Economics ETDs

This dissertation is a collection of chapters that demonstrate the relationship between return migration, human capital, and labor outcomes in the origin developing countries. Return migration is an intrinsic part of the cycle of international migration and development. Migrants acquire new skills, accumulate human capital and savings during their stay abroad. When they return, this accumulated capital may generate benefits for the left behind family members but may also affect their reintegration into the labor markets in the origin countries.

In my first chapter, I estimate the effect of a return migrant in the household on the schooling outcomes of …

The Corona-To-Spark Transition And Its Dependence On Electric Field Non-Uniformity, David O. Smith

Electrical and Computer Engineering ETDs

The corona to spark transition is an important part of understanding gaseous breakdown in non-uniform fields. The degree of uniformity in the geometry determines both the onset of corona as well as the eventual spark transition. In a highly non-uniform geometry, the onset of corona precedes the development of a spark. However, in weakly non-uniform fields, corona is unable to form before it transitions into a spark. The degree of non-uniformity at which this transition occurs is known as the corona point.

An experimental setup using the point electrodes allows precise changes in field uniformity, characterizing the corona point in …

A Study On Electromagnetic Topology Optimization Using Binary Particle Swarm Algorithm, Mohammad Sazzad Hossain

Electrical and Computer Engineering ETDs

Topology optimization is a state-of-the-art tool for detecting the best material layout in a physical space to obtain certain goals. Initially developed as a structural engineering tool, it has been recently used in electromagnetics and has shown immense potential. The aim of this work is to build a framework for applying the topology optimization method in electromagnetics using a modified binary particle swarm optimization (BPSO) algorithm. In this thesis, a very classic problem of coax to waveguide transition has been considered, and a novel solution has been given using topology optimization. The steps to implementing topology optimization using BPSO have …

Stochastic Optimal Shared Control With Non-Gaussian Processes, Paul Onor

Electrical and Computer Engineering ETDs

In this paper, we propose an approach for shared control of a planar quadrotor that allows for non-Gaussian disturbance in the model and non-Gaussian variation in the pilot's control actions. We do this by constructing empirical characteristic functions for the state, inputs, and disturbance using demonstrations by a human expert. These are then used to make predictions of future states and of the system disturbance, using the first and second moments of the empirical characteristic function to estimate the mean and variance of these processes. With this method, we can extend assumptions from additive white Gaussian noise to any real-valued …

An Investigation Of Emerging Technologies To Advance The Understanding Of Dynamics Between The Floodplain And Main Channel Due To Riparian Vegetation, Smriti Chaulagain

Civil Engineering ETDs

Riparian vegetation covers only about 0.4% of the land surface whereas rivers and streams cover about 0.3 to 0.56% but riparian vegetation still provides substantial ecosystem services including many that affect hydrodynamic processes. The ability to estimate the flow resistance caused by vegetation and the consequences for hydrodynamic processes has long been a vexing problem for engineers. Flow resistance is strongly influenced by local hydraulic conditions (water velocity and depth) and vegetation structures, and in turn, vegetation affects mass and momentum exchange processes. However, riparian vegetation conditions change continuously due to external stressors including climate change (e.g., extended drought in …

Nuevomexicana/O Identity Affirmations Through Chicana And Chicano Muralism, Howard E. Griego

Chicana and Chicano Studies ETDs

This research spotlights Nuevomexicana/o identity as expressed in murals produced by New Mexican artists during the Chicana and Chicano Mural Movement of the 1970s. Extant research focuses on Chicana/o murals in other regions mainly in California and Texas, and New Mexico has been understudied in the literature. This study analyzes murals and interviews with New Mexico artists to explore how these artists portrayed their identity and conveyed their social and political expression through their thematic content. A dialectical analysis was conducted using a mixed method approach. A statistical analysis determined the frequency and distribution of distinct themes. The findings showed …

Thermodynamic And Kinetic Investigation Of U(Vi) And As(V) Reactions: Insights For Risk Assessment And Remediation, Maria Isabel Meza

Civil Engineering ETDs

The goal of this dissertation was to investigate the mechanisms of immobilization of uranium (U) and arsenic (As) in waters nearby to Native American Communities for remediation applications. This work sought to identify the physical or chemical processes affecting the complexation, sorption, and precipitation of U and As with calcium (Ca), carbonates (CO3)2-, and phosphate (PO4)3-. The current knowledge about the mechanisms affecting the reaction of metal mixtures such as U, As, and other co-occurring elements in natural waters with minerals such as limestone1-5 and hydroxyapatite for remediation applications is limited. A better understanding of thermodynamics and kinetics affecting the …

Three Essays On Student Enrollment Responses To General Household And Education-Specific Assistance Programs, Usamah Wasif

Economics ETDs

Greater educational attainment is associated with an increase in expected income, lowering of internal discount rates, and improved financial and health literacy. Income transfers have the potential to positively impact educational attainment by either reducing the direct cost of college attendance or by inducing an income effect that nudges students to decrease labor supply and devote greater time to studies. Whether assistance leads to more education depends on the circumstances, particularly the educational stage and assistance type. High school students may react differently to assistance relative to college students and both may react differently to general household income transfers compared …

Effect Of Phylogeny Misestimation On Estimating Trait Evolution Parameters, Tabytha Ariel Perez

Mathematics & Statistics ETDs

Biologists are interested in estimating trait evolution models from phylogenies. However, phylogenies are imperfectly estimated, generally from DNA sequence data. In this study, true phylogenies are simulated to understand whether errors in phylogeny estimation affect inference of the trait evolution model. Given the tree, DNA sequences as well as traits are then simulated from the true phylogeny; both are simulated independently from the other. After the simulation, the DNA sequences were used to estimate trees using the UPGMA method without utilizing the trait information. The estimated trees combined with the traits are used to infer the evolutionary trait models, specifically …

Relationships Between Self-Efficacy, Participation In Prison Programs, And Perceived Ability To Live Crime Free Upon Release From Prison, Beret Ravenscroft

Nursing ETDs

This study examined the relationships between self-efficacy, participation in prison programs, and perceived ability to live crime free among male prisoners in state-operated New Mexico prisons. Among the 589 study participants, those who reported having received assistance in changing criminal attitudes agreed they would be able to live crime free at a rate 8% higher than those who did not (p = .029). Those who agreed that they are able to accomplish any task (p = .001) or who disagreed with feeling helpless to deal with problems (p = .001) also scored significantly higher in perceived ability …

Development Of A Programmable, Open-Source, And Cost-Effective Fluidic System For Cell Culture Applications, Charles Montoya

Biomedical Engineering ETDs

Open-source laboratory equipment has become an increasingly popular alternative to commercially available options due to its simple implementation, capability of user-customized modifications, and cost-effectiveness. Presented here is the development of a programmable and open-source fluidic system comprised of three custom-built syringe pumps for cell culture applications. The fluidic system was directly integrated with a multiwell plate on an environmentally controlled microscope platform for live-cell imaging and time-lapse analyses of cellular responses as culture conditions are adjusted using the programmable fluidic system. Proof-of-concept of this system is obtained by controlling autophagic activity in A549 cells by adjustment of nutrient supply. The …

"Sometimes You Just Want To Be Another Parent And Another Kid At The Party": Exploring Parental Narratives Surrounding Disclosure Of Child's Epilepsy, Lisa German

Communication ETDs

Epilepsy is currently the fourth most common neurological disorder in the world (Epilepsy Foundation, 2022). However, it is largely misunderstood by both the public and those with epilepsy. In addition, epilepsy is still a stigmatized condition in most areas of the world.

In part due to the stigma, as well as the impact on quality of life factors, disclosure of an epilepsy diagnosis can be a struggle for those with epilepsy as well as their parents or caregivers. Therefore, this study explored disclosure challenges faced by parents of children with epilepsy, utilizing Communication Privacy Management theory and Stigma Management Communication …

Implications For Cross-Training Between Applied Behavior Analysis And Speech-Language Pathology, Katherine Lynn Isaacson

Speech and Hearing Sciences Publications

This paper is to provide clarity about the overlaps between the fields of Applied Behavior Analysis (ABA) and speech-language pathology, including evaluation, assessment, intervention planning, and treatment of language development, nine articles were selected for a review of terms and definitions, philosophical and theoretical underpinnings, and licensure/certification requirements pertaining to both scopes of practice. Behavior analysts and speech-language pathologists (SLPs) are likely to provide intervention alongside one another due to their frequent provision of intervention with individuals diagnosed with autism spectrum disorder (ASD). Despite broad, initial overlaps between the professions, the required educational coursework, supervised fieldwork and clinical practicums, and …

The Effects Of A Power Iteration-Based K-Eigenvalue Solver For Various Subcritical Parameters And Calculations, Daniel H. Timmons

Nuclear Engineering ETDs

The need to simulate subcritical benchmark parameters quickly and accurately is becoming increasing important. When using Monte Carlo methods this is traditionally done using a fixed-source calculation where a particle and its progeny are tracked until their removal from the system. This method can be slow for near critical systems. The use of a k-eigenvalue solver could reduce the computational footprint and reduce the need to post process data.

This is done for four parameters from the ICSBEP benchmark values: R_1 , R_2 , M_L, and M_eff. These parameters are calculated in two new distinct ways. First, is directly …

Human-Centered Avalanche Susceptibility Mapping, Lindsey L. Rotche

Geography ETDs

With backcountry winter travel increasing in popularity, the importance of accessible avalanche safety information is crucial. Widely accessible avalanche backcountry maps use slope shading to show where avalanches are likely to start. Instead of focusing on the hazard of an avalanche starting in a specific location, this project shifted the cartographic emphasis of avalanche susceptibility maps to show risk to a human traveling in the terrain. I developed a methodology to incorporate possible avalanche runouts, terrain traps, and connected slopes while reducing false certainty of the visualization. To provide a more comprehensive representation of susceptible terrain, I integrated aspect, distance …

Permeability And Porosity Of Loose Granular Salt, Evan J. Babcock

Civil Engineering ETDs

In this study, permeability and porosity measurements are made and reported for loose granular salt from the Waste Isolation Pilot Plant (WIPP). Measurements are made on a particularly wide range of particle sizes of this salt in a permeameter constructed large enough to fit and represent mixtures containing salt particles up to 25.4 cm in size. Salt samples with different particle size distributions are constructed and tested at varying levels of consolidation due to induced vibrations. Permeability measurements are made at a varying range of porosities for a given sample. Measurements are also compared with a predictive model for permeability …

Single-Crystal Elasticity Of Clinopyroxenes And The Viscosity Of Kimberlite Magma Under High Pressure-Temperature Conditions, Ming Hao

Earth and Planetary Sciences ETDs

Clinopyroxene is not only an important mineral phase in the pyrolitic upper mantle, but also one of the dominated mineral phases in the subducted or delaminated eclogitic materials in the deep Earth. Identifying and locating these eclogitic materials requires the knowledge of the thermoelastic properties of clinopyroxene under high pressure-temperature conditions. In this dissertation, we have measured the single-crystal elastic properties of jadeite and omphacite, which are major clinopyroxene phases in the eclogitic materials, up to 18 GPa 700 K by Brillouin spectroscopy and utilized these data to identify the eclogitic heterogeneities in the mantle.

We also measured the viscosity …

Halogen And Non-Traditional Isotope Geochemistry Of Planetary And Terrestrial Materials, Anthony Gargano, Zachary Sharp, Justin Simon, Charles Shearer, Adrian Brearley, James Day

Earth and Planetary Sciences ETDs

This dissertation presents the advances in non-traditional isotope geochemistry of planetary and terrestrial materials encompassing chlorine, sulfur, and zinc isotopes, as well as halogen geochemistry. A wide breadth of materials was studied throughout the completion of this work including iron meteorites, achondrites, chondrites, Apollo lunar samples, as well ancient marine chert, and carbonate sediments. Much of the focus involved the development of a method capable of simultaneously measuring the halogen contents and chlorine isotope compositions of geological materials. Here, I present these data sets to broadly characterize the process of devolatilization of planetary materials, and specifically the problem of ‘halogen-poisoning’ …

Beyond Seeing: Sight, Mind, And Power In Early-Medieval England, Kevin S. Jackson

English Language and Literature ETDs

Before the development of optical science, sight was largely understood to function extramissively, with rays emitted from the eyes effectuating sight as they came into contact with the physical world. In early-medieval England in particular, a very strong correlation between extramissive sight and an extracorporeal mind is evident, based in part on a potential source for this model that has yet to be identified in scholarship: De opificio Dei, by Lactantius. The connection between sight and the mind accounts for anxiety about the possibility of seeing God, manifest in some early-medieval English translators’ careful revision of biblical texts. Sight …

The Return On Investment For Dual Credit, Samantha Sengel

Teacher Education, Educational Leadership & Policy ETDs

Scrutiny of colleges and universities based upon student success factors such as retention, persistence, time to degree and graduation has indicated that interventions often have incremental impact. Access to dual credit, the taking of college courses while in high school, as an intervention for maintaining the engagement of high achieving students and re-connecting disengaged, underserved student populations has had proven positive outcomes for many decades. The purpose of this research study was to understand the relationship between dual credit and several higher education measures and outcomes including retention and persistence, likelihood of receiving an award, and ultimately the cost of …