Digital Commons Network^™

Connecting Work And Family Life: The Effects Of Family-Related Moderators On Idiosyncratic Deals Of Employees And Work Outcomes., Tanushree Chatterjee

Open Access Theses & Dissertations

Idiosyncratic deals (i-deals), which are customized work arrangements negotiated between employees and their organizations, have been increasingly recognized as a strategic mechanism for addressing the heterogeneous needs of today's diverse workforce. However, existing research has largely overlooked the role of employees' family backgrounds as a moderating context that shapes their effectiveness. Drawing on work-life border theory (Clark, 2000) and conservation of resources theory (Hobfoll, 1989), the study tests whether work-family conflict and work-family enrichment mediate the downstream effects of i-deals on turnover intentions and job performance through the moderation of four family-related characteristics (parent status, number of children, family support, …

Spike-Sorting Algorithm For Neuropixel Probes, Luis David Davila

Open Access Theses & Dissertations

Modern extracellular neural probes like Neuropixels, allow for high-density extracellular neural probes to record terabytes of electrophysiological brain data. Spike sorting is the process of isolating individual neurons on this data through various clustering and filtering techniques. Modern spike sorting algorithms are held back by their need for human intervention to separate high-quality from low quality clusters, due to the volume of data that can be collected a completely automated approach is required. To address this requirement, we have developed a framework to preprocess, cluster, grade, and separate high/low quality clustering results using custom models trained on the grades. To …

Mitogenomic And Physiological Comparison Between Wild And Domesticated Congeners, Nicholas Enriquez

Open Access Theses & Dissertations

Domestication is a process in which wild populations are morphologically and/or behaviorally manipulated through selective breeding to become optimized for living in captivity. Consequently, many traits become quickly and significantly diverged from their ancestral, wild lineages, a process known as part of domestication syndrome. Captive breeding of mallards (Anas platyrhynchos) was one of the last major successful domestication events resulting in dozens of recognized breeds today. Many breeds were optimized for either ornamental or agricultural purposes (i.e., meat and/or egg production), but the game-farm mallard was specifically bred for sport hunting. In North America, the use of game-farm mallards to …

Development Of A High-Throughput Framework For Studying Choice-Movement Dynamics In Freely Moving Rats Across Motivational And Pharmacological States, Atanu Giri

Open Access Theses & Dissertations

This thesis develops and applies high-throughput behavioral assays and analysis pipelines to study how external contingencies and internal state shape rodent decision-making. First, it introduces RECORD (Reward-Cost in Rodent Decision-making), a modular platform that combines 3D-printed arenas, microcontroller-based control, and closed-loop trial structure to deliver graded rewards and costs in a foraging-like environment. RECORD supports scalable data collection across multiple arenas and a software stack for parsing, databasing, and extracting spatiotemporal behavioral features and psychometric choice functions. Using this framework, the thesis quantifies how animals integrate sucrose reward magnitude with aversive light cost, revealing structured individual differences and sex-dependent movement …

Metabolomics In The Dryland Critical Zone: The Role Of Soil Metabolites In Phosphorus Acquisition, Kalpana Kukreja

Open Access Theses & Dissertations

Earth's Critical Zone (CZ) plays a key role in sustaining life through carbon, water, and nutrient cycling from the top of the canopy to the groundwater. A key feature of critical zone research is the integration of multiple interdisciplinary techniques. An emerging set of techniques that can add to this approach is the field of metabolomics, the quantification and study of comprehensive metabolite profiles. In this dissertation, I apply metabolomics to address knowledge gaps in dryland critical zone ecosystems, specifically how soil metabolite dynamics influence biogeochemical processes, and with a particular emphasis on phosphorus (P) cycling in the Chihuahuan Desert. …

Human Papillomavirus (Hpv) Vaccine Acceptance: A Mixed-Methods Study And Randomized Controlled Trial Examining Messengers Of Hpv Vaccine Information Among Hispanic Parents, Alyssa Andrea Martinez

Open Access Theses & Dissertations

Hispanics make up 19.5% of the U.S. population, making them the nation's largest ethnic minority. Hispanics are disproportionately impacted by health outcomes, including many different types of cancers that are caused by the Human Papillomavirus (HPV). An HPV vaccine is available that can prevent 90% of HPV associated cancers. The purpose of this mixed-methods study and randomized experiment is to develop and test data-driven digital health messages to promote the HPV vaccine in Hispanic parents. Four specific aims were conducted among three major studies. Aim 1 (Study 1): A cross-sectional survey was conducted to obtain preliminary evidence on trusted messengers …

Plant Communities Of Arid Ephemeral Stream Streams, Biogeographic Filters, Climatic Sensitivity, Urban Impacts Across Spatial And Temporal Scales, Luis Miranda

Open Access Theses & Dissertations

Ephemeral stream networks, locally known as arroyos, are among the most ecologically significant yet least protected habitats in arid landscapes. Despite supporting a disproportionately high plant biodiversity compared to surrounding uplands, these riparian systems lack regulatory protection in most arid U.S. states and face increasing pressure from urban expansion and intensifying climate change. There is an urgent need to understand how these factors influence riparian plant communities and hinder their ability to recover, enabling effective conservation and management strategies. In this dissertation, I explored the interplay of biogeographic gradients, precipitation variability, and urbanization in shaping arroyo riparian plant communities across …

Adverse Childhood Experiences, Resilience, And Adaptive Functioning Among Student Veterans With Disabilities. A Resilience Portfolio Model Perspective, Donyeill Mozer

Open Access Theses & Dissertations

Adverse Childhood Experiences (ACEs) are associated with long-term psychological, physical, and behavioral outcomes; however, limited research has examined their relationship with multidimensional college adjustment among student veterans with disabilities, particularly those attending Hispanic-Serving Institutions (HSIs). Guided by the Resilience Portfolio Model, this study examined associations among ACEs, perceived resilience, and multidimensional college adjustment within an understudied population of student veterans with disabilities enrolled at an HSI. Using a cross-sectional secondary analysis of survey data, the analytic sample consisted of 129 student veterans. ACEs were measured using the Adverse Childhood Experiences Questionnaire, perceived resilience was measured using the Brief Resilience Scale, …

Dynamic Joint Stiffness Druing Jogging In Individuals With Chronic Ankle Instability, David Saltiel Nava

Open Access Theses & Dissertations

Background: Lateral ankle sprains (LAS) are common musculoskeletal injuries and may progress to chronic ankle instability (CAI), which is characterized by recurrent sprains, perceived "giving way," and altered ankle mechanics. Dynamic joint stiffness (DJS) quantifies a joint's resistance to angular displacement under external loading and may provide insight into ankle stability during dynamic tasks. Although prior CAI studies have examined DJS during walking or jumping, limited evidence exists during jogging. This study examined phase-specific ankle DJS and ankle work variables during jogging in individuals with and without CAI. Methods: Ninety participants were included (40 CAI, 50 uninjured controls). All participants …

Mapping The Lateral Hypothalamic Area: Chemoarchitecture, Connectivity, And Activation In Motivated Learning And Reward, Vanessa Inez Navarro

Open Access Theses & Dissertations

The lateral hypothalamic area (LHA) is a large and complex hypothalamic region with diverse functions across four main rostrocaudal divisions. Despite its size and diversity, disagreements over how to define LHA subdivisions (e.g., Swanson atlas lists 17 subdivisions) make it challenging to fully characterize its structure and function. Across these subregions, neuronal connectivity varies, indicating they serve different behavioral functions. Consistent with this, particular LHA neuronal pathways have been linked to reward-related responses, emphasizing the region's roles in motivation, feeding, and cognition. Current approaches to classifying the LHA have primarily relied on neurochemical markers or gene-directed manipulations, often without integrating …

Computational Studies Of Alpha-Lactalbumin Binding To Perfluorodecanoic Acid, Randhal Smith Ramirez Orozco

Open Access Theses & Dissertations

This thesis investigates the structural and thermodynamic interactions between Perfluorodecanoic acid (PFDA) and bovine alpha-lactalbumin (ALAC), a critical milk protein essential for infant nutrition. The primary objectives were to computationally determine the most probable binding sites of PFDA to ALAC and to quantify the strength of these interactions alongside the structural changes they induce. This study addresses a critical gap in understanding how persistent environmental contaminants like PFDA are recruited and transported by nutritional proteins within the milk matrix. The methodology integrated high-throughput molecular docking with long-range, molecular dynamics (MD) simulations to provide a dynamic characterization of the ALAC-PFDA complex. …

Salience Network Circuit Dynamics In Distress Tolerance And Drug-Seeking Vulnerability, Marina Alicia Smoak

Open Access Theses & Dissertations

The psychological distress experienced during drug withdrawal can lead individuals with substance use disorder to abandon their goal of abstinence. Numerous human studies demonstrate that an inability to persist in challenging, goal-directed behavior while experiencing psychological distress is associated with multiple stages of substance use, including relapse. This behavioral construct is referred to as low distress tolerance (DT). Rodent models of DT similarly show that low DT predicts elevated cocaine relapse, particularly when DT is assessed following extended abstinence. This abstinence period corresponds with the incubation of craving, a phenomenon characterized by progressively increased cocaine-seeking over time. Importantly, relapse vulnerability …

Fluoxetine Exposure During Adolescence Alters Prefrontal Cortex Signaling And Nociceptive-Related Behavior In Adulthood, Anapaula Themann

Open Access Theses & Dissertations

The long-term neurobiological consequences of adolescent antidepressant exposure remain poorly understood, despite the substantial increase in selective serotonin reuptake inhibitor (SSRI) prescription rates in youth. Therefore, the goal of this dissertation was to determine whether adolescent exposure to the SSRI fluoxetine (FLX) produces lasting molecular and behavioral adaptations, using rodents as a model system. To do this, in Chapter 2, I assessed whether adolescent FLX exposure (postnatal day [PD] 35-49) alters signaling molecules associated with survival and synaptic plasticity (extracellular signa- regulated kinase [ERK]) within the adult prefrontal cortex (PFC) - a brain region that plays a central role in …

High-Resolution Mapping Of Brainstem Feeding Circuits: A Framework For Targeted Neuroscience Tools, Geronimo Tapia

Open Access Theses & Dissertations

The neural control of energy balance is mediated in part by distributed brainstem circuits that integrate metabolic, visceral, and hormonal signals to coordinate appropriate motivated behaviors and autonomic responses. Despite extensive study, the precise neuroanatomical architecture regulating metabolism remains incompletely defined within standardized atlas frameworks. This work addresses that gap through complementary studies examining an acute glycemic challenge methodology known to stimulate feeding, the acute delivery of an anorexigenic-associated neurohormone, and the chemoarchitecture of a major feeding-related region, the parabrachial nucleus. First, utilizing 2-deoxy-D-glucose (2-DG) induced glucoprivation, we map the rapid response of dorsal medullary neuronal populations with high spatial …

The Moderating Role Of Cannabis Use Motives On The Relationship Between Intragroup Marginalization And Cannabis Use In Hispanic Emerging Adults, Austin Ray Vernon

Open Access Theses & Dissertations

Cannabis use has become increasingly normalized among emerging adults, yet associated risks to health remain a growing concern. Cannabis use among Hispanic populations has risen over the past decade, underscoring the need to examine culturally relevant factors that may influence use patterns and related harm. Intragroup marginalization, a culturally specific form of identity-based rejection from one's own ethnic group, may represent one such factor. The present study examined whether intragroup marginalization is associated with cannabis use outcomes and whether cannabis use motives moderate these associations. Participants were 358 Hispanic college students recruited from a U.S.-Mexico border university. Following informed consent, …

Soil Microbial Responses To Artifical Light At Night, Randall L. Walker

Open Access Theses & Dissertations

Global change, driven by both natural processes and human activities, has significantly transformed ecosystems. Urbanization and artificial light at night (ALAN) are key contributors, disrupting natural light cycles and influencing biological rhythms, biodiversity, and ecosystem functions. Thus far, there remains a gap in knowledge of how soil ecosystems are impacted by ALAN. This study uses a laboratory incubation to investigate the effects of ALAN on soil microbial communities and functions across urban and natural ecosystems. Briefly, soil was collected from eight sites around El Paso, Texas and neighboring New Mexico representing urban and rural light exposure. Soil was then subjected …

Overcoming Glioblastoma Resistance To Temozolomide With New Derivatives: Design, Synthesis, And Mechanistic Studies, Hualin Zhang

Open Access Theses & Dissertations

Glioblastoma multiforme (GBM) is an aggressive brain tumor with rapid progression and poor prognosis. Although temozolomide (TMZ) remains a central component of standard therapy, its clinical benefit is limited and resistance frequently emerges through DNA repair pathways, particularly O6-methylguanine-DNA methyltransferase (MGMT). Because DNA cross-links are generally more difficult to repair than monoalkylated lesions, we hypothesized that TMZ derivatives bearing protein-reactive functionality might generate damage that is less susceptible to MGMT-mediated resistance. Guided by this rationale, we designed a new class of N3-modified TMZ derivatives containing covalent warheads, developed a synthetic route compatible with the chemical instability of the TMZ scaffold, …

Unveiling The Longitudinal Dynamics Of Discrimination, Identity, And Mental Health Over Time Within U.S. Muslims Among On-Going Palestine Genocide, Manal Aboargob

Open Access Theses & Dissertations

Discrimination is a pervasive stressor that shapes mental health through both direct experiences and indirect, or vicarious, exposure. In contemporary contexts marked by global media saturation, individuals may repeatedly witness discrimination and violence directed toward their social group, amplifying psychological burden. The present longitudinal study examined how direct and vicarious discrimination were associated with affective well-being among U.S. Muslims during the ongoing genocide in Palestine, and whether religious identity and religious coping moderated these associations over time. Participants (N = 103) completed a baseline survey and up to 11 weekly surveys over a three-month period. Multilevel mixed-effects growth models were …

Riemannian Manifold-Coupled Joint Sparse Graphical Models For Spatially Structured Precision Matrix Estimation, Abdul Rahman Adam

Open Access Theses & Dissertations

This thesis introduces a novel geometry-aware framework for joint precision matrix estimation in spatially structured data. Unlike existing joint Gaussian graphical model estimators that rely on Euclidean coupling mechanisms such as fused or group graphical lasso, our approach incorporates intrinsic Riemannian geometry through geodesic distance penalties on the symmetric positive definite manifold.

The method measures similarity between precision matrices of adjacent spatial regions using the affine-invariant Riemannian distance, capturing deformations of concentration ellipsoids rather than entrywise differences. This is particularly suited for spatial transcriptomics, where regions may share dependence structures despite differences in scale or composition.

An efficient Alternating Direction …

Characterization Of The Antiviral Activity Of Mouse Schlafen Proteins, Wendy Paola Alvarez Leal

Open Access Theses & Dissertations

The goal of this work was to characterize the anti-viral role of mouse Schlafen8 and Schlafen9. Expression of these proteins is induced by type I interferon in response to viral infections. Importantly, their human functional orthologs exhibit anti-viral functions, and the structural element required for these activities are conserved in Schlafen8 and Schlafen9. Therefore, it is expected that these proteins will also impair viral replication. An important limitation in this field is that the anti-viral function of human SLFNs has been evidenced only in in vitro cellular models. No informative mutations have been described in human populations so far. Thus, …

Bayesian Deep Learning For Photovoltaic Power Forecasting: A Probabilistic Framework For Uncertainty Quantification And Grid Reliability Optimization, Pablo Abraham Bustamante

Open Access Theses & Dissertations

The global energy landscape is undergoing a profound transformation, driven by the urgent need to decarbonize power systems, enhance energy security, and meet growing electricity demands. Solar photovoltaic (PV) power has emerged as a critical component of future energy infrastructure due to its abundance, scalability, and cost-effectiveness. However, PV generation is inherently variable and weather-dependent, introducing significant uncertainty into grid operations and complicating the task of balancing supply and demand. Accurate forecasting of PV power generation-particularly on day-ahead and hour-ahead horizons-has become a strategic necessity for grid stability, economic efficiency, and environmental sustainability. PV output is influenced by numerous factors, …

Exploring Connectivity And Element Distribution In The Critical Zone Using Deep Cores Below Agricultural And Natural Drylands In The American Southwest, Angie Lynette Cano

Open Access Theses & Dissertations

Water movement controls how solutes are transported and stored in arid Critical Zone (CZ) systems. In natural drylands, low precipitation and high evapotranspiration lead to long term salt accumulation in the CZ, whereas irrigation increases water input and increases downward solute transport. This study investigates how agricultural practices alter subsurface hydrology and geochemistry by comparing two deep CZ cores from the southwestern United States: a 50 m deep core beneath a flood irrigated pecan farm named 5R farm, in the Rio Grande Valley in Tornillo, Texas, and a 97.5 m deep core from the Red Lake Playa in the Jornada …

Detecting Early Physiological Signs Of Work-Related Muscle Strain And Fatigue Using Quantitative Sensory Testing, Omar Alberto Cano

Open Access Theses & Dissertations

Background: Work-related musculoskeletal disorders (WRMSDs) are a major source of occupational disability and economic burden worldwide. Early detection of physiological strain remains challenging since traditional methods often rely on self-reported pain or diagnosis after symptom development. Quantitative Sensory Testing (QST) may provide an objective, non-invasive method for identifying early sensory changes associated with repetitive upper-extremity loading. Purpose: This pilot study examined the responsiveness of Pressure Pain Threshold (PPT) and Thermal Threshold Testing (TTT) for detecting Acute muscular strain and fatigue following repetitive manual task performance. Methods: A within-subject counterbalanced design was conducted with sixteen healthy participants. Each participant completed both …

The 2026 Mda Award Winners: Recognizing Outstanding Service, David Foe

The Journal of the Michigan Dental Association

This article lists the recipients of the 2026 MDA awards, highlighting their contributions to the dental profession and public health. Notable winners include Dr. Christopher Smiley, recipient of the Meritorious Award for a lifetime of achievement in dental journalism and leadership, and Dr. Charles Burling, honored as Dentist Citizen of the Year for his community service. The feature also recognizes educators, legislative advocates, and volunteers in the Donated Dental Services (DDS) program who provide care to vulnerable populations.

Developing A Questionnaire For The Interoceptive Awareness Of Stuttering, Leslie Williams

Graduate Theses and Dissertations

Stuttering is commonly measured through its overt characteristics (blocks, prolongations, and repetitions). This equates to stuttering “severity,” or the frequency of these behaviors. This method, however, does not reflect the lived experience of adults who stutter. This “measurement problem” has been the subject of numerous studies. In this graduate thesis, the measurement problem is addressed by using qualitative data previously gathered by Malcolm (2024) from adults who stutter about the internal experience of stuttering to create survey. Quotes from adults who stutter were gathered, categorized, edited for clarity, and formatted into a survey, The Multidimensional Interoceptive Awareness of Stuttering Scale …

Exploring The Spectrum Of Anxiety During Concussion Recovery: A Comprehensive Examination Of Symptom-Based Anxiety Disorders, Kori J. Durfee

Graduate Theses and Dissertations

Background: Anxiety is common following a concussion, arising from both psychosocial and physiological changes, and can manifest in diverse ways. Despite its complexity and association with worse outcomes, post-concussion anxiety is often assessed as a single construct. Characterizing anxiety presentations following injury may improve the identification of clinically meaningful symptoms and help inform future targeted interventions that can improve concussion outcomes. Purpose: The primary purpose was to determine if symptom-based anxiety disorders occur in adults with concussion and identify pre- and post-injury predictors associated with these disorders. Additionally, the clinical utility and predictive abilities of symptom-based anxiety disorders and variability …

Impacts Of Climate-Smart Agriculture On Greenhouse Gas Emissions In Southeast Arkansas Cotton, Cassandra Seuferling

Graduate Theses and Dissertations

Increasing concerns of climate change have led to the evaluation of greenhouse gas (GHG) emissions [i.e., carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O)] from agroecosystems, particularly cotton (Gossypium hirsutum) production. Technology improvement and conservation agriculture methods [i.e., reduced-tillage (RT) instead of conventional tillage (CT) and the use of cover crops (CC)] require further evaluation regarding GHG emissions from Arkansas cotton production. The first objective of the study was to evaluate four gas-flux-determination methods [i.e., linear or exponential regression models, with negative fluxes (WNF) included in the dataset or replacing negative fluxes (RNF)] on CO2, CH4, and N2O fluxes …

Exploring A 'Fishy' Solution: Uncovering Human Norovirus Using A Zebrafish Model, Sahaana Chandran

Graduate Theses and Dissertations

Human norovirus (HuNoV) is the leading cause of acute gastroenteritis worldwide; however, the lack of robust laboratory culture systems and reliable animal models has limited progress in understanding viral replication and developing effective intervention strategies. While alternative models such as the zebrafish system have been explored, gaps remain in evaluating their ability to support replication across diverse HuNoV strains and in identifying factors that influence infectivity. This dissertation provides a comprehensive investigation into the use of the zebrafish model for studying viral replication, host interactions, and potential inhibition strategies. Initial studies focused on optimizing viral delivery methods using Tulane virus …

Marvelous And Disturbing: Surreal Imagery, Elaboration And The Limits Of Persuasion In Women's Health Journalism, Shelby Elizabeth Gill

Graduate Theses and Dissertations

Since the 1930s, surrealism has lent its abstract hand to journalism, offering a visual language for topics that resist literal depiction. Given its historical and often fraught association with the female form, surrealist imagery has found a natural home in editorial coverage of women's health, most recently in reporting on endometriosis, a condition whose invisible, stigmatized and difficult-to-articulate experience makes conventional photojournalism an inadequate representational tool. The present study experimentally compared surreal imagery, realistic imagery and a text-only control condition to assess their effects on knowledge acquisition, comprehension, attitudinal responses, perceived risk and behavioral intentions related to endometriosis in a …

The Impact Of Quantum Computing On Ransomware, Byron Denham

Graduate Theses and Dissertations

Ransomware is one of the most pervasive and dangerous threats to cybersecurity today. Attacks involving ransomware have been responsible for the disruption of critical services in many fields including healthcare, education, and government. In the current paradigm, crypto ransomware relies on asymmetric cryptography to perform its operations in a way that ensure the victim’s only chance for file recovery is by paying the attacker’s requested ransom payment. However, advancements in quantum computing threaten the asymmetric cryptography that ransomware relies on. It has been shown that, once developed, a sufficiently powerful quantum computer will have the ability to break asymmetric cryptography …