Digital Commons Network^™

Local Map Of The Interstellar Fuv Field, David Lomeli

Open Access Theses & Dissertations

The strength of the far-ultraviolet field is an important parameter in determining the chemistry that takes place in star-forming regions. FUV radiation is produced by bright stars in the galaxy and absorbed by interstellar dust. By using newly available maps of the dust distribution, in conjunction with catalogs of stellar positions and spectra, we created a local map of the FUV field ranging from 6-13.6 eV. We find a value of 6.57*10^-14 erg/cm^3 at the location of the Sun. This value, alongside its spectra, follow previous measurements and estimates of the FUV field at the Sun. We further study the …

Academic And Ethnic Identity's Moderating Effects On Intergenerational Conflict, Academic Motivation And Alcohol Outcomes Relationship Within First-Year Hispanic College Students, Ashley Marie Lindquist

Open Access Theses & Dissertations

While alcohol use is a public health concern for all college students, first-year college students are at higher risk for drinking and experiencing alcohol consequences. The increased risk may be attributed to the stress of transitioning from high school to college. For many of these students, this is their first-time gaining independence and trying to find out how they fit into society. Family conflict commonly occurs when students start college because they develop their values and beliefs, especially Hispanic college students. Intergenerational conflict (IGC) is a subtype of parent-child conflict that arises when the child deviates from traditional Hispanic values, …

My Little Poetic/Prose Book Of Words, Sayings, And Stories In Broken Spanish And A Little Bit Of German / Mi Libro Chiquito De Poética / Prosa De Palabras, Dichos, Y Historias Español Fracturado Y Un Poquetito Alemán, Sharon Ann Lucero

Open Access Theses & Dissertations

Acknowledgements

First and foremost, I would like to thank Jonathan Taylor and Sarah Thompson for the wonderful job they did in providing me with feedback. I took into consideration all their comments. Their comments aligned with Dr. Powers, and I really took a deeper look into my Spanish/English translations on whether I should have them or not. I found a happy medium for all of it. I also went back and looked at the rest of the class’s comments and made sure that I did not miss any of the details that were pointed out to me the first time …

Development Of A Digital Engineering Testing Framework For Cubesat Applications, Javier Alberto Martell

Open Access Theses & Dissertations

Digital Engineering (DE) is playing an important and expanded role in todayâ??s industry. As engineering systems become more and more complex with each new iteration, the need for a more efficient and agile methodology for project management and development is needed. The SleeperSat-1 (SPST-1) is a Modular Open System Architecture (MOSA) type of small satellite being developed by the UTEP Aerospace Center. The SPST-1 will mostly use digital engineering tools for its lifecycle research and development. CubeSats require rigorous environmental testing not only to ensure the success of the mission, but also to ensure the safety of the crew, space …

"So That Our Children May Have The Opportunity That You And I Did Not": Segregated Mexican Schooling In West Texas, 1954-1979., Angelina Martinez Gonzales

Open Access Theses & Dissertations

This project looks at the unique circumstances of ethnic Mexican students in West Texas following the Brown v. Board of Education decision in 1954. It reveals intentional school segregation in the West Texas cities of Midland, Odessa, Pecos, and El Paso and utilizes various court cases that took place between 1950 and 1980 in the Lone Star State to highlight the ways that the federal mandate neglected Mexican children in the Southwest. It includes archival sources, historical litigation, educational records, and oral histories to piece together a historical narrative that has been overlooked.

Manipulation Of The Magnetic Properties Of Van Der Waals Materials Through External Stimuli, Luis Martinez

Open Access Theses & Dissertations

A new revolutionary application dependent on the electron spin to carry information with greater efficiency in data storage, transfer, and processing, will rely heavily on 2D magnets and the ability to effectively control their electron spins and engineer their properties. Previously, magnetic thin films were heavily studied to achieve this goal, however, these materials came with pitfalls and lacked naturally occurring 2D magnetism. The recent discovery of intrinsic magnetism in few-layered van der Waals (vdW) magnets has inspired researchers to extensively study them because of the feasibility to exfoliate them down to a monolayer. Due to this dimensionality factor, vdW …

Our Author Is Crazy, Zani A. Meaders

Open Access Theses & Dissertations

This thesis delves into the realm of young adult (YA) fantasy literature, exploring how its meta-narrative elements, fast-paced story beats, and relatable characters can facilitate the acquisition of healthy coping mechanisms among its readers. In the preface, I discuss the importance of providing YA audiences with narratives that not only entertain but also serve as tools for navigating the complexities of adolescence. Drawing upon psychological theories and literary analysis, I argue that meta-awareness in YA fantasy can offer readers a unique perspective on their own struggles and encourage them to develop resilience and coping skills.

The accompanying YA Fantasy story …

Modeling The Spatiotemporal Variations Of The Magnetic Field In Active Regions On The Sun Using Deep Neural Networks, Godwill Asare Mensah Mensah

Open Access Theses & Dissertations

Solar active regions are areas on the Sun's surface that have especially strong magnetic fields. Active regions are usually linked to a number of phenomena that can have serious detrimental consequences on technology and, in turn, human life. Examples of these phenomena include solar flares and coronal mass ejections, or CMEs. The precise predictionof solar flares and coronal mass ejections is still an open problem since the fundamental processes underpinning the formation and development of active regions are still not well understood. One key area of research at the intersection of solar physics and artificial intelligence is deriving insights from …

Investigating The Production And Perception Of Lexical Stress In English As A Second Language: A Cue-Weighting Approach, Natalia Irene Minjarez Oppenheimer

Open Access Theses & Dissertations

The Cue-Weighting Transfer Hypothesis states that (a) listeners weight acoustic cues according to how informative they are in signaling a lexical contrast in their L1, and (b) that listeners transfer their cue weightings from the L1 to the L2, using those cues that are important in the L1 to perceive lexical stress in the L2 (Tremblay et al., 2021). Most of the Spanish-English bilinguals in our region are highly proficient in both languages, but differ in their language dominance spectrums. That is, they can handle both languages with ease, but are usually more dominant in one of them. Because of …

Microwave Emission Model Parameter Tuning For Surface Soil Moisture Retrieval Using Uav-Mounted Dual Polarization L-Band Radiometer, Santiago Hoyos Echeverri

Open Access Theses & Dissertations

Surface soil moisture retrieval from L-band brightness temperature has been developed for the past decades due to multiple beneficial characteristics of 1-2 GHz frequency bands for remote sensing of the environment. Numerous microwave emission models have been proposed for tower and satellite-based operations with successful retrieval of surface soil moisture and vegetation water content. As a result of the development of cost-effective and low-mass microwave L-band radiometers such as the Portable L-band Radiometer (PoLRa), surface soil moisture surveying traditionally developed by satellite missions SMOS and SMAP can now be developed at local scales, bringing these operations to commercial small unmanned …

Microstructural Characterization And Oxidation Behavior Of Al-Cu-Ni-Mn And Al-Cu-Ni-Mn-Si Non-Body Centered Cubic High Entropy Alloys, Mckenna Mae Lin Hitter

Open Access Theses & Dissertations

High entropy alloys (HEA) differ from traditional alloying systems because five elements are mixed in equi-atomic proportions, as opposed to having one main principal element. As a result of exploring this new method of alloying, it was found that high entropy alloys demonstrate exceptional mechanical properties, an example being oxidation resistance, and are capable of enduring elevated temperatures. Seeing the potential that this new area of interest contains, studies involving a combination of elements to form various HEA have been performed. Most refractory metals are body-centered cubic and possess extremely high melting temperatures, so they are regularly considered when designing …

Combining Green Analytical Methods And Machine Learning To Develop Urinary Fatty Acid Models For Cancer Detection, Elizabeth Noriega Landa

Open Access Theses & Dissertations

This study aimed to explore fatty acids (FAs) as non-invasive biomarkers for prostate cancer (PCa) detection and prognosis, and their potential applications in other cancers. The objectives of this study were: 1) Develop a non-invasive urinary FAs-based model for diagnosing PCa; 2) Develop a FAs-based liquid biopsy model for non-invasive monitoring of PCa progression; 3) Investigate FAs composition in periprostatic adipose tissue (PPAT) collected from PCa positive patients; 4) Investigate the potential of urinary FAs biomarkers for diagnosing clear cell renal cell carcinoma (ccRCC) and ovarian cancer (OC).For the PCa diagnostic model, urine samples from 334 biopsy-confirmed PCa-positive and 232 …

Computational Study Of Fluorescent Molecular Probes For The Early Detection Of Alzheimer's Disease, Gabriela Elizabeth Molina Aguirre

Open Access Theses & Dissertations

Alzheimer's disease is a debilitating brain disorder that affects memory, thinking, and behavior. It is the most prevalent form of dementia and the seventh leading cause of death in the United States. As, researchers have identified biomarkers that can indicate the presence of the disease many years before the first symptoms appear, so there is an opportunity for early detection and treatment follow-ups, which could significantly improve the quality of life for those affected by this disease.This dissertation investigates the relationship between molecular structure and optical properties of donor-bridge-acceptor (DBA) fluorescent molecular probes designed for detecting Amyloid-β and p-Tau protein …

Analysis Of Drying Behavior Of Robocasted Barium Titanate, Abigail Ortega

Open Access Theses & Dissertations

Finding an adequate ceramic formulation for material extrusion is a time-consuming process. The necessary equipment may be unavailable to perform the desired test. This study demonstrated an alternative to observe a material after extrusion to understand its drying process. This study focused on 55 solid loading volume percent and a 39 solid loading volume percent, each with two different binder treatments focusing on fresh same day made binder, a 30 day old, aged binder and lastly an artificial binder obtained by a fuming process. Firstly, a formulation was created and loaded onto a pressure-based syringe to be extruded with a …

Examining School-Age Children's Use Of Rare Words In Expository Discourse: Applications Of Computerized Analysis, Serena Jae Pedroza

Open Access Theses & Dissertations

In the school-age years, children use varied discourse styles to convey information. In addition to conversational and narrative discourse, they learn to use expository discourse to explain complex topics. Previous studies have found that compared to conversation, expository discourse samples are generally more syntactically complex (Lundine et al., 2018; Nippold et al., 2005). In addition, the vocabulary used in expository discourse may be more advanced than that in other discourse types. One way to explore vocabulary use in discourse is to measure the rarity of words within samples of discourse. The purpose of this study was to compare typically developing …

Energy Optimization In Pneumatic Systems Using Ens-200 Energy Saving Trainer, Maha Guru Shankar Perumal

Open Access Theses & Dissertations

Various industries such as manufacturing and assembly, the automotive sector, printing and paper handling, packaging, aerospace, etc., widely use pneumatic systems for a variety of operations. Enterprises use pneumatic systems for cost-effectiveness, reliability, and simplicity. However, they also have certain inefficiencies, leading to high operating costs and reduced efficiency in various applications. The focus of this research is on energy optimization in pneumatic systems to improve efficiency in industrial applications, minimize energy waste, and reduce operational costs. The best practices for enhancing energy efficiency in pneumatic systems were proper system design, pressure regulation, leak detection and repair, energy-efficient components, and …

Establishing The Validity Of A Measure Of Implicit Bias Toward People With Alcohol Use Disorder, Erin Marie Portillo

Open Access Theses & Dissertations

Alcohol use disorder has been identified as one of the major burdens of disease but also remains one of the disorders with the lowest treatment prevalence. For individuals who seek treatment for their alcohol use disorder, they may experience barriers that impact their treatment for alcohol use disorder. These barriers may extend to a person’s beliefs, attitudes, and stigma. While attitudes and beliefs refer to their perceived need for treatment and beliefs of self-reliance, stigma is multistep process that makes way for stereotypes, prejudice, and acts of discrimination to take place. With labels such as “alcoholic” implying negative connotation and …

Understanding The Limits Of Deep Packet Inspection For Network Traffic Classification, Herman Ramey

Open Access Theses & Dissertations

We present our human network application labeling system that contributes a new level of distinction between the network traffic that should be labeled from the network traffic that should not be labeled. This distinction improves the label accuracy of the training data set produced from the human labeled data and will subsequently improve the performance of supervised machine learning classifiers used for network traffic classification. This system also allows for the human network user to label traffic, with little effort, in a manner consistent with normal network usage, i.e., no need for a contrived experiment. Lastly, we use human supplied …

Deal With A Dead Man, Afton Reed

Open Access Theses & Dissertations

The Value of Fantasy in Exploring Intangibles

Often, a story is sparked because of asking the question, “what if?” which is what happened to create the hydra that is Deal with a Dead Man. Two percolating ideas happened to coincide, and eventually crashed together. Early on, it began when I was introduced to the Russian fairytale of Koschei the Deathless and his fear of death, but inability to enjoy life. Over the past year, my family experienced several deaths, one tragically early, and another of ripe old age. My fascination with the fairytale grew as I watched myself and family …

Characterization Of The Androgen Receptor H1-H3 Loop As A Putative Fkbp Regulatory Surface, Isela Rodriguez

Open Access Theses & Dissertations

Prostate Cancer (PCa) is one of the most common life-threatening malignancies diagnosed among American men. Initiation and progression of PCa are dependent upon androgen receptor (AR) regulated genes. Functional receptor conformation is influenced by the cooperation of chaperone and cochaperone proteins including the 52 and 51 kDa FK506 binding proteins (FKBP52 and FKBP51). FKBP52 is known for being a positive regulator of AR, PR (progesterone receptor), and GR (glucocorticoid receptor) activity, whereas FKBP51 negatively regulates steroid hormone receptor activity. As a result, these two proteins have become highly promising therapeutic targets for the disruption of mechanisms important in several endocrine-related …

Prediction Modeling Of Foreign Object Impact Debris On Aircraft Through Digital Engineering, Luis Eduardo Rodriguez

Open Access Theses & Dissertations

The contribution of the research made is derived into two sections. The first topic discusses the prediction modeling of Foreign Object debris (FOd) impact on aircraft structures through the use of digital engineering. The program used in this project is Ansys Explicit Dynamics to evaluate the stress and strain caused by the initial conditions of flight trajectory and impact created from FOd found inside of aircraft structures. The prediction modeling consists of creating a repetition of simulations with different FOds to evaluate the damage created to subsystems of the wing bay such as the fuel system and internal structures. The …

Examining The Effects Of A Week-Long Social Media Abstinence Intervention, Iweek, On General Well-Being, Mental Health, And Body Image Concerns In Latina College Students, Roberto Sagaribay

Open Access Theses & Dissertations

Latina college students, on average, spend approximately 30 hours per week on social media, highlighting the pervasive influence of social media on their lives. While social media can facilitate interpersonal relationships, its impact on mental and physical health is evident in the literature. Problematic social media use has been associated with increased rates of depression, anxiety, and decreased life satisfaction. Additionally, exposure to idealized images on social media platforms often leads to lower body satisfaction, particularly among women. Social media may also influence eating behaviors through the abundance of food advertisements and contribute to sedentary behavior, as individuals spend significant …

Becoming A Bilingual Teacher On The Border: Developing Ideological Clarity At A Hispanic-Serving Institution, Laura J. Salazar

Open Access Theses & Dissertations

As teacher education programs encourage more candidates to pursue bilingual certification, a need exists to improve the ways that preservice teachers (PSTs) are prepared to teach in bilingual classrooms. Research suggests the importance of preparing PSTs in the area of linguistic ideological clarity. Scholars define ideological clarity as an ongoing process through which individuals can critically consider their ideological orientations as well as dominant ideologies that favor those in power, with an aim of becoming agents of change through this process (Alfaro & Bartolomé, 2017). This case study sought to understand the opportunities that bilingual PSTs have to develop ideological …

Evaluating The Effectiveness Of A Resilience Intervention On College Students' Mental Illness And Subsequent Alcohol Use, Aitiana Ivonne Sanchez-Garciaguirre

Open Access Theses & Dissertations

Mental illness and stigma surrounding mental illness are common among college-aged individuals. Alcohol use is also common among college-aged individuals, and often coexists with increased symptoms of mental illness, leading to unhealthy perpetual coping mechanisms. However, increased resilience and adaptive coping strategies may suppress the need to use alcohol as a coping mechanism when experiencing symptoms of mental illness and the stigma associated with it. The present study sought to utilize a resilience intervention to increase resilience and adaptive coping strategies among Hispanic college students to reduce their alcohol use and experiences of depression and/or anxiety. Additionally, the present study …

Produced Water: Characterization And Treatment, Ramon Antonio Sanchez Rosario

Open Access Theses & Dissertations

In recent years, environmental concerns have urged companies in the energy sector to modify their industrial activities to facilitate greater environmental stewardship. For example, the practice of unconventional oil and gas extraction has drawn the ire of regulators and various environmental groups due to its reliance on millions of barrels of fresh water for hydraulic fracturing well stimulation, which is generally withdrawn from natural sources and public water supplies. Additionally, this process generates two substantial waste streams, which are collectively characterized as flowback and produced water. Whereas flowback water is comprised of various chemical additives that are used during hydraulic …

Characterizing The Mentoring Landscape In An Online Biology Cure: An Examination Of Student And Graduate Teaching Assistant Perspectives And Outcomes, Karen Alejandra Santillan

Open Access Theses & Dissertations

Both undergraduate research experiences (UREs) and course-based undergraduate research experiences (CUREs) provide students with benefits and opportunities such as improving technical skills and making connections that provide resources. Where these two experiences differ is accessibility. Similar to their URE counterpart, CUREs entail mentorship on the part of the faculty/graduate teaching assistant (GTA) instructor (Dolan, 2016). There is general agreement that mentoring has many benefits for undergraduate STEM students, such as an improvement in retention rates, increased confidence and self-efficacy, and a more established sense of belonging and science identity (Dolan, 2016). CURE instructors often adopt the role of “mentor” in …

Computational Investigation Of Transition Metal Photoredox Catalysis: Redox Property Tuning Via Ligand Modification, Christian Fernando Sandoval Pauker

Open Access Theses & Dissertations

In the last decade, photoredox catalysis has become a powerful tool in synthetic chemistry. It relies on the ability of catalytic systems that facilitate energy-demanding redox reactions thanks to photoinduced electron transfer processes. This dissertation focuses on the computational investigation of the redox properties of transition metal photoredox catalysts using density functional theory (DFT) calculations. The research systematically explores the effects of altering redox-active ligands on the thermodynamics of electron transfer events in the photoredox cycle. The electronic structure changes throughout oxidative and reductive quenching cycles are analyzed, with a particular focus on Cu(I) complexes. Through computational techniques, insights into …

Atlas-Based Analysis Of The Neural Projections From The Lateral Hypothalamic Area To The Lower Brainstem In The Adult Male Rat, Jessica Valeria Salcido Padilla

Open Access Theses & Dissertations

Within the last decade, the number of diseases associated with dysregulation of the neural circuits responsible for energy balance, glucosensing, and feeding control has increased. One brain region containing these circuits is the lateral hypothalamic area (LHA), which plays an important role in the sleep/wake cycle, energy balance, and motivated behavior. Although the LHA has been termed a â??feeding centerâ??, other regions within the hindbrain are known for the regulation of similar functions including energy balance, glucosensing, and feeding control. While many studies have explored and reported projections from the LHA to the hindbrain, few have further investigated the interconnections …

"Inwombed" Expressions Of Anxiety: Myhth, Humor, And The Absurd, Jonathan Taylor

Open Access Theses & Dissertations

Abstract poetry collection.

Abortion Funds As Care Work: Navigating The Emotional Tolls Of The Texas Executive Order Abortion Ban And Covid-19 Pandemic, Brianna Trejo

Open Access Theses & Dissertations

This qualitative study explores the experiences of abortion fund staff and volunteers amidst the unprecedented challenges posed during the early months of COVID-19 and the Texas Executive Order. Through analysis of semi-structured interviews, we aimed to identify the shared experiences of staff and volunteers during this time. Four categories of experiences were identified: (1) Reproductive Justice, (2) Emotional Support, (3) Creating a Community of Care, and (4) Emotional Burnout. Our findings revealed that to navigate the uncertainties of the pandemic and Executive Order, staff and volunteers adapted a community of care model deeply rooted within the framework of reproductive justice. …