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Ab Initio Studies On Mechanical Properties Of Freestanding Ferroic Monolayers, John Malcolm Davis
Ab Initio Studies On Mechanical Properties Of Freestanding Ferroic Monolayers, John Malcolm Davis
Graduate Theses and Dissertations
This thesis explores the role of mechanical properties and elastic couplings in freestanding paradigmatic ferroic monolayers within the framework of density functional theory. This dissertation is comprised of three interconnected published studies: (i) establishing the elastic behavior across a temperature-driven phase transition in SnSe monolayers; (ii) thermally-driven phase transitions in graphene-like silicene, germanene, and stanene, examining the structural stability and band gap occlusion; and (iii) magnetoelastic coupling in an Ising-like CrSiTe3 monolayer, focused on assessing magnetic contributions to the material stiffness by establishing a proper non-magnetic reference.
Advancing Social Sustainability In Operations And Supply Chain Management: A Multi-Theoretical Exploration Of Technology, Task Familiarity, And Sustainability Interactions, Satabdi Hazarika
Graduate Theses and Dissertations
Social sustainability in operations and supply chain management (OSCM) centers on generating economic value through practices that safeguard people, communities, and broader societal systems impacted by the supply chain. While the importance of such practices is increasingly recognized, firms face persistent challenges in embedding social sustainability into formal management systems. This dissertation tackles three such challenges, with a particular focus on safety in trucking—a vital yet underexamined aspect from the lens of social sustainability. Safety performance in this context is influenced by the complexities of using advanced safety technologies, the demanding and solitary nature of truck driving, and the temporal …
A Dynamic Hierarchical Attention Framework For Multimodal Malware Detection, Tamanna Nazmin
A Dynamic Hierarchical Attention Framework For Multimodal Malware Detection, Tamanna Nazmin
Graduate Theses and Dissertations
The increasing use of Android in the worldwide mobile ecosystem has come along with a significant increase in advanced malware, highlighting the critical necessity for efficient, scalable, and adaptable detection systems. Despite recent advancements in machine learning improving malware detection, the majority of current solutions are limited to one, two, or three data modalities, hence neglecting the comprehensive behavioral spectrum of contemporary multi-vector threats. This thesis presents the first comprehensive multimodal framework for Android malware detection, which combines textual, time-series (temporal), graph-based (structural), and visual information using an innovative hierarchical attention mechanism and Dynamic Fusion Controller(DFC). Our methodology consistently classifies …
Fpga-Based Overlay Accelerators With Massive Parallel Processing Units To Accelerate Deep Neural Networks, Ehsan Kabir
Fpga-Based Overlay Accelerators With Massive Parallel Processing Units To Accelerate Deep Neural Networks, Ehsan Kabir
Graduate Theses and Dissertations
Deep neural networks (DNNs) are widely used in applications such as classification, prediction, and regression. Various DNN architectures, such as convolutional neural networks (CNN), multilayer perceptrons (MLP), long short-term memory (LSTM), recurrent neural networks (RNN), and transformers, have become leading machine learning techniques in these applications. They require significant computational resources and have substantial memory demands due to intensive matrix-matrix multiplications and complex data flows. Hence, efficient utilization of on-chip computational and memory resources is essential to maximize parallelism and minimize latency. Designing an optimal tiling scheme that aligns effectively with the architecture is also necessary. Modern FPGAs are equipped …
Constraining The Properties And Formation Pathways Of Low Mass X-Ray Binaries In Early-Type Galaxies, Andrew Paul Ferrell
Constraining The Properties And Formation Pathways Of Low Mass X-Ray Binaries In Early-Type Galaxies, Andrew Paul Ferrell
Graduate Theses and Dissertations
In this dissertation, we explore how low-mass X-ray binaries (LMXBs) form and evolve in nearby early-type galaxies. We investigate X-ray binary (XRB) luminosity function (XLF) scaling relations for Chandra-detected populations of LMXBs within the footprints of 24 early-type galaxies. Our sample includes Chandra and Hubble Space Telescope observed galaxies at D ≲ 25Mpc that have estimates of the globular cluster (GC) specific frequency (SN) reported in the literature. As such, we are able to directly classify X-ray-detected sources as being coincident with unrelated background/foreground objects, GCs, or sources that are within the fields of the galaxy targets. We model the …
Synthesis And Properties Study Of Layered Magnetic Topological Materials, Gokul Acharya
Synthesis And Properties Study Of Layered Magnetic Topological Materials, Gokul Acharya
Graduate Theses and Dissertations
The discovery of topological materials (TMs) has opened up exciting opportunities for probing fundamental physics and enhancing innovative device integrations. These materials display various exotic properties, such as large magnetoresistance, high mobility, chiral anomaly, and surface Fermi arcs. The magnetic versions of ZrSiS family, LnSbTe and LnPS (Ln = lanthanide) have attracted intensive attention as these materials provide a new platform to study interplay between magnetism, topological states, and electron correlations. The vast pool of topological materials has provided exciting avenues to precisely engineer the topological states by modulating spin-orbital coupling, electronic dimensionality, and lattice constant through element substitutions. This …
Impact Of Retail Display Case On Shelf-Life, Palatability, And Color-Stability Of Fresh Beef Steaks, Stephanie Elizabeth Shimer
Impact Of Retail Display Case On Shelf-Life, Palatability, And Color-Stability Of Fresh Beef Steaks, Stephanie Elizabeth Shimer
Graduate Theses and Dissertations
The objective of the study was to determine: the impact of two retail display cases, three beef muscles, and three packaging schemes on palatability traits, flavor development, lipid oxidation, objective and subjective evaluation of color stability, and microbial shelf-life. No muscle × package × case × day interactions were observed for any instrumental or panelist color evaluation (P > 0.851). No retail case effect was observed for TBARS, consumer sensory evaluation, or cook loss (P >0.05). A muscle × case × package interaction was observed for L* and b* (P< 0.05). No muscle × case × package observations were observed for shelf-life or palatability analyses (P > 0.05). No significant two-way or three-way interactions were observed for evaluation …
A Security Worth Having: The Pursuit Of Happiness Through Reading Burney, Radcliffe, And Austen, Samantha Meeks
A Security Worth Having: The Pursuit Of Happiness Through Reading Burney, Radcliffe, And Austen, Samantha Meeks
Graduate Theses and Dissertations
This dissertation explores the works of three female authors of female protagonists in the long 18th century: Frances Burney’s Camilla and Evelina; Anne Radcliffe’s The Mysteries of Udolpho and The Italian; and Jane Austen’s Northanger Abbey, Sense and Sensibility, and Pride and Prejudice. By following the paths to security the female protagonists of these novels fashion, and identifying the elements of Stoicism and related Hellenism and the aspects of cybernetics, this dissertation delves into the choices female protagonists make along the way regarding their security and how such choices lead to agency and self-fashioning for these women. Emotional, economic, and …
The Relationship Between Physical Activity And Health-Related Quality Of Life In College Students, Shelia Ann Fritts
The Relationship Between Physical Activity And Health-Related Quality Of Life In College Students, Shelia Ann Fritts
Graduate Theses and Dissertations
This study explored the interaction effects of physical activity levels and race on college students' physical and mental health, focusing on Native American students. A total of 245 students participated, categorized by physical activity levels (low, moderate, and high) and race (Native American and others). Descriptive statistics outlined the sample characteristics and physical activity behaviors. At the same time, a two-way ANOVA was conducted to assess the effects of race and physical activity on health-related quality of life, measured through physical and mental composite scores (PCS and MCS). The results revealed a significant interaction effect between race and low physical …
Tissue Engineered Combinatorial Therapeutics For Spinal Cord Injury Repair, Inha Baek
Tissue Engineered Combinatorial Therapeutics For Spinal Cord Injury Repair, Inha Baek
Graduate Theses and Dissertations
Traumatic spinal cord injury (SCI) lead to temporary or permanent sensorimotor deficit due to the complex and multifaceted features of the injury site, making the treatments ineffective. Recent research emphasizes the potential of combinatorial therapeutics approaches combining different therapeutics, such as biomaterials and stem cell transplantation. In this context, nerve composite hydrogels, fabricated from decellularized sciatic nerve (dSN) and spinal cord (dSC) extracellular matrices (ECM), might be promising platforms due to their biocompatibility and ability to mimic native microenvironments. In this study, we developed and characterized nerve mimetic composite hydrogels embedded with human adipose-derived stem cells (hASCs) and investigated their …
A Theoretical Investigation Of Photo-Induced Deformations And Transitions In Nanoscale Ferroelectrics, Carmel Dansou
A Theoretical Investigation Of Photo-Induced Deformations And Transitions In Nanoscale Ferroelectrics, Carmel Dansou
Graduate Theses and Dissertations
This dissertation presents a comprehensive first-principles investigation into the interaction of light with ferroelectric materials, focusing on light-induced structural responses (photostriction) and phase transitions in Ferroelectric superlattices, epitaxially strained BiFeO3 thin films, and twodimensional NbOX2 (X = Cl, Br, I) ferroelectrics. The work aims to provide microscopic insights into how light can control the lattice structure and even the crystallographic phase in these systems, with the broader goal of informing the design of light-responsive functional materials for practical technological applications. The first part explores light-induced effects in PbTiO3/SrTiO3 superlattices with different polarization orientations. Our simulations reveal that photoexcitation modifies the …
A Mobility Data-Driven Approach To Analyzing And Modeling Park Accessibility Inequities And Use In U.S. Cities, Michaelmary Chukwu
A Mobility Data-Driven Approach To Analyzing And Modeling Park Accessibility Inequities And Use In U.S. Cities, Michaelmary Chukwu
Graduate Theses and Dissertations
Urban Park accessibility inequities have been a longstanding issue globally and the United States in particular. Despite the benefits that urban parks provide, use and access is not equitably distributed among the population, often favoring historically privileged populations over others (disadvantaged). Fortunately, improvements have been made in recent years to promote balanced park distribution in some cities; however, evidence still shows that most cities are behind. Interestingly, the rise in human mobility data has facilitated the study of human behavior and use of activity spaces. This thesis advances the existing studies on park accessibility and emerging human mobility to study …
Switching Performance Optimization Of Sic Mosfets With Digital Active Gate Drivers, Liyang Du
Switching Performance Optimization Of Sic Mosfets With Digital Active Gate Drivers, Liyang Du
Graduate Theses and Dissertations
Silicon carbide (SiC) metal-oxide-semiconductor field-effect transistors (MOSFETs) have extensive applications in high-power density devices, but they exhibit quick switching transients that are problematic, including electromagnetic interference (EMI), voltage overshoot, and current imbalance between paralleled devices. The purpose of this dissertation is to maximize the switching performance of SiC MOSFETs using digital active gate drivers (AGDs). A three-level gate driving approach is presented to improve current sharing in paralleled SiC MOSFETs through turn-on voltage and gate signal delay adjustment. Closed-loop control with real-time feedback ensures high-reliability operation. For better practicability, a compact AGD structure of a single-path Class-B amplifier-based topology is …
Urbanization, Climate Change, And Water Quality In Northwest Arkansas Caves, Eliezer Ugarte
Urbanization, Climate Change, And Water Quality In Northwest Arkansas Caves, Eliezer Ugarte
Graduate Theses and Dissertations
The Ozark Cavefish is one of multiple species of conservation concern found in Cave Springs Cave and Logan Cave in Northwest Arkansas (NWA). Over the past two decades, the urbanization of NWA has negatively impacted the recharge areas of both caves, and in turn the water quality of both cave streams. The changing climate has also altered temperature and precipitation, which influence many aspects of karst groundwater. These effects are shown in the historical water quality records for both caves. However, these records are from varied sources and have never been comprehensively compiled and analyzed. This thesis approaches the issue …
Dual Investigations Into Broiler Health: Mitochondrial Gene Expression In Ascites Susceptibility And G-1,25(Oh)₂D₃-Driven Modulation Of Bone And Gut Integrity In Lameness, Layla Hussein Al-Mitib
Dual Investigations Into Broiler Health: Mitochondrial Gene Expression In Ascites Susceptibility And G-1,25(Oh)₂D₃-Driven Modulation Of Bone And Gut Integrity In Lameness, Layla Hussein Al-Mitib
Graduate Theses and Dissertations
Modern broiler production faces persistent challenges from metabolic and skeletal disorders, particularly ascites and bacterial chondronecrosis with osteomyelitis (BCO), which compromise animal welfare and production efficiency. This dissertation examines two key factors that contribute to these conditions: mitochondrial gene expression associated with pulmonary hypertension syndrome (PHS) and the role of intestinal barrier integrity in mitigating lameness. In the first study, the expression of mitochondrial genes COXII and ATP6 was evaluated in the breast, thigh, and lung tissues of three broiler genetic lines—ascites-susceptible (SUS), ascites-resistant (RES), and unselected relaxed (REL). While no significant expression differences were observed in muscle tissues, SUS …
Helping Someone Off The Hook: Post-Moral Disengagement As An Interpersonal Emotion Regulation Strategy In A Hypothetical Alcohol-Involved Sexual Assault Vignette, Kayla Ford
Graduate Theses and Dissertations
Post-moral disengagement (PMD) is posited as a form of interpersonal emotion regulation that involves altering the severity of harmful conduct and/or the transgressor’s personal responsibility to facilitate avoidance of negative emotions like guilt, which could maintain problematic behaviors. A pervasive harmful behavior on college campuses is alcohol-involved sexual violence, wherein intoxication is often used as an excuse or justification for assault. Though some aggressors of sexual violence experience guilt afterwards, it is unclear how bystanders might respond to this display of emotion and the potential applicability of PMD. As an initial step to assessing PMD as interpersonal emotion regulation, the …
Stay Woke: Understanding Critical Consciousness Development In Adults And Its Relationship To Psychological Constructs, Christin Alexandra Mujica
Stay Woke: Understanding Critical Consciousness Development In Adults And Its Relationship To Psychological Constructs, Christin Alexandra Mujica
Graduate Theses and Dissertations
Racism confers numerous measurable health risks for people of color. Interventions to mitigate the impact of racism on health are necessary and important to reduce disease burden and improve health outcomes for people of color. While communities of color have developed resiliency tactics that have allowed them to survive, even thrive, in the face of racial oppression, the evaluation and promotion of promising tools that counteract racism’s negative impacts are essential (Phillips et al., 2015). Critical consciousness is just such a tool. Research with children suggests it holds promise (Diemer et al., 2016; Heberle et al., 2020; Maker-Castro et al., …
Media’S New-Age Opinion Leaders: Audience Perceptions Of Smi Credibility And Opinion Leadership Role, Alyssa Claire Riley
Media’S New-Age Opinion Leaders: Audience Perceptions Of Smi Credibility And Opinion Leadership Role, Alyssa Claire Riley
Graduate Theses and Dissertations
With worldwide technological and communication advancements in the last few decades, everyday citizens can capture, create, and share news through social media platforms. Nowadays, prominent social media influencers (SMIs) influence where and from whom online audiences consume their news and information. This study aims to explore how different SMI attributes – such as attractiveness, expertise, and trustworthiness – and their social media tactics create or add to audience perceptions of SMIs as credible online opinion leaders. Applying Two-Step Flow theory and Source Credibility theory, the study used data from a survey of 115 participants to understand how audiences perceived the …
The Cannon-Thurston Map For Relatively Hyperbolic Free-By-Cyclic Groups, Kailey Beth Perry
The Cannon-Thurston Map For Relatively Hyperbolic Free-By-Cyclic Groups, Kailey Beth Perry
Graduate Theses and Dissertations
Let F = H1 ∗ · · · ∗ Hk ∗ Fr be a splitting of a finitely generated free group, H = {H1 , . . . , Hk } a set of subgroups of F , and Φ ∈ Aut(F ) an automorphism such that for any i, Φ([Hi ]) = [Hj ] for some j. Consider the free-by-cyclic group Gϕ = ⟨F, t | t−1 xt = Φ(x)⟩. Suppose Gϕ is strongly hyperbolic relative to H̃ = {H̃1 , . . . , H̃k }, where H̃i = ⟨Hi , t | t−1 xt = Φ(x)⟩. In …
Exploring The Relationship Between Grit, Burnout, And Academic Success Among First-Year Osteopathic Medical Students During Fundamentals Of Anatomic Science I Course, Heather Guzik
Graduate Theses and Dissertations
Burnout is a significant issue among healthcare professionals. Burnout refers to the mental, emotional, and physical exhaustion that can develop throughout one’s career or studies. It can affect professionalism and patient care (National Academies of Sciences, Engineering, and Medicine: National Academy of Medicine, 2019). Studies have shown that burnout begins early in an individual's medical education and can increase throughout their training (Voltmer et al., 2021). It has been suggested that students with a high level of Grit may exhibit some resistance to burnout (Jumat et al., 2020; Lee et al., 2022). This noncognitive trait measures a person’s ability to …
Synthesis Of Pillar[N]Arenes And Bridge-Functionalized Pillar[N]Arenes Via Cyclic And Acyclic Acetals, Babitha Machireddy
Synthesis Of Pillar[N]Arenes And Bridge-Functionalized Pillar[N]Arenes Via Cyclic And Acyclic Acetals, Babitha Machireddy
Graduate Theses and Dissertations
Pillar[n]arenes are macrocyclic compounds consisting of ‘n’ hydroquinone units linked by para-methylene bridges. Since their first report of facile synthesis 17 years ago, pillararenes have attracted significant interest due to their versatile functionality, electron-rich cavity, crystalline nature, and planar chirality. These unique properties have enabled a broad range of practical applications, including small molecule separation, formation of one-dimensional and two-dimensional channels, drug delivery systems, and enhanced emissive and fluorescent properties. The ease of synthesis of pillararenes has been one of the key factors in their widespread adoption and continued exploration in supramolecular chemistry and material science. Despite the efficiency and …
The Intersection Of Race And Nativity: Exploring Criminal Justice Contact Among Black Adults In The United States., Uchenna Makuochukwu Onuoha
The Intersection Of Race And Nativity: Exploring Criminal Justice Contact Among Black Adults In The United States., Uchenna Makuochukwu Onuoha
Graduate Theses and Dissertations
Black immigrants in the United States navigate a dual identity as both Black and immigrant, yet their unique experiences remain underexplored in research on immigration and crime. While prior studies have documented generational differences and negative associations between immigration and crime, the intersection of race and nativity in shaping criminal justice contact for Black immigrants is unknown. Using data from the National Longitudinal Study of Adolescent to Adult Health, this study examines the role of race and nativity on various forms of criminal justice contact. Specifically, we investigate (1) the extent to which nativity plays a role in criminal legal …
Nanoparticle Iron Based Catalysts For Clean Water And Other Applications, Shelby Lynn Foster
Nanoparticle Iron Based Catalysts For Clean Water And Other Applications, Shelby Lynn Foster
Graduate Theses and Dissertations
This dissertation explores the development, characterization, and application of iron-based catalysts for environmental remediation and energy generation. The research focuses on Fe-based nanomaterials for water purification, electrochemical ammonia production, and ethanol oxidation enhancement. The first section of the dissertation investigates the removal of water contaminants using nickel-iron (NiFe) bimetallic nanoparticles. Various NiFe ratios were synthesized and tested for their efficiency in degrading the azo dye (Orange G), with lower Ni content formulations achieving 80–99% dye removal within 60 minutes. Results show that changing the molar ratio of nickel to iron caused different removal rates, as well as the extent of …
Co-Creating Play:Utilizing Comics To Potentialize Participatory Self-Determination In Marginilized Young Adults, Marlin Mcknight
Co-Creating Play:Utilizing Comics To Potentialize Participatory Self-Determination In Marginilized Young Adults, Marlin Mcknight
Graduate Theses and Dissertations
Storytelling has long served as a vital mechanism for preserving cultural heritage, transmitting values, and fostering intergenerational connection (Moeshlin, 2024). Despite this significance, graphic narratives such as comics and graphic novels have been historically marginalized—dismissed as trivial “children’s media” or reduced to entertainment rather than recognized as culturally resonant tools (McCloud, 1993). This marginalization intensified as comics evolved to depict adult themes and, at times, harmful stereotypes, triggering social backlash that stigmatized their utility for younger audiences (Segran, 2020). Consequently, scholarly exploration of comics’ therapeutic potential has stagnated, hindered by the medium’s tumultuous history. This study bridges this gap by …
Engineered Interfaces For Enhanced Transient Liquid Phase Bonding In Electronics Assembly, John Russell Harris
Engineered Interfaces For Enhanced Transient Liquid Phase Bonding In Electronics Assembly, John Russell Harris
Graduate Theses and Dissertations
Growing applications in transportation make power density a key optimization target in the power electronics industry. More power in a shrinking environment leads to high heat flux and junction temperatures that damage silicon-based switching devices. Temperatures approaching 175℃ can result in false triggering of the device’s activated state, resulting in short circuits. Developing wide bandgap semi-conductors, such as gallium nitride and silicon carbide, are less susceptible to this complication as the energy from elevated temperature is a smaller fraction of what would be required to trigger the device. These devices are projected to function reliably in environments of up to …
Photochemical Fabrication And Tribological Evaluation Of Hexagonal Grooves With Corner Dimples On Cast Iron Surfaces, Steven Sonntag
Photochemical Fabrication And Tribological Evaluation Of Hexagonal Grooves With Corner Dimples On Cast Iron Surfaces, Steven Sonntag
Graduate Theses and Dissertations
The traditional honing process used to texture cylinder liners in internal combustion engines has long been recognized as suboptimal, as evidenced by the need for a break-in period before achieving peak performance. Although laser-based methods can produce micro-scale features with high precision, they are often cost-prohibitive and difficult to scale for large or complex components. This study explores photochemical machining (PCM) as a low-cost, scalable alternative for fabricating high-resolution surface textures—specifically, hexagonal grooves with corner dimples—on gray cast iron. The resulting textures exhibit uniform groove widths (~13 μm) and varied depths, demonstrating PCM’s capability to create high-resolution patterns with sub-micron …
High-Resolution Energy Efficient Selective Laser Sintering Of Copper Nanoparticles, Bo Shen
High-Resolution Energy Efficient Selective Laser Sintering Of Copper Nanoparticles, Bo Shen
Graduate Theses and Dissertations
Copper (Cu) is widely utilized in electronics and photonics applications due to its outstanding electrical and thermal conductivity. With increasing demand for miniaturization and higher precision in modern manufacturing, traditional selective laser sintering (SLS) techniques designed primarily for high-throughput production are becoming insufficient. These conventional methods struggle to deliver the resolution required for micro-scale fabrication and often cause thermal damage to sensitive substrates. Therefore, there is a growing necessity to develop compact and high-resolution laser sintering systems capable of precise microfabrication with minimal thermal influence. This study addresses this challenge by investigating nanosecond pulsed laser sintering as a method to …
Layered Redactions: An Arts Based Research And Self Study Handbook For Art Teachers Navigating Professional Learning Communities, Audrea M. Danenhauer
Layered Redactions: An Arts Based Research And Self Study Handbook For Art Teachers Navigating Professional Learning Communities, Audrea M. Danenhauer
Graduate Theses and Dissertations
This self-study contributes to the field of art education by examining the tensions and possibilities within Professional Learning Communities (PLCs) through an arts-based lens. Framed as both a love letter and a palimpsestic work, this thesis reimagines professional development as a layered, living practice, rooted in collective care and criticality. Using collage as both method and metaphor, the study interweaves Freire’s dialogic praxis, bell hooks’ radical tenderness, and the marginalia of a weathered PLC handbook—redacted, annotated, and reassembled with lived experience. Through deliberate redaction and reassembly, the research intentionally disrupts the normative invisibility of whiteness in educational structures, making visible …
Design, Modeling, Control, And Analysis Of A Modular Two-Wheeled Self-Balancing Robotic System, Mishek Jair Musa
Design, Modeling, Control, And Analysis Of A Modular Two-Wheeled Self-Balancing Robotic System, Mishek Jair Musa
Graduate Theses and Dissertations
Two-wheeled self-balancing robots have garnered substantial attention within the realms of research and innovation in academia and industrial settings. In particular, advances in control algorithms, machine learning, reinforcement learning, and sensor technologies have played a pivotal role in their development. Although primarily recognized for their utility in personal transportation in the commercial sector, these robots possess potential applications across various domains, including search and rescue, healthcare, material handling, logistics, etc., due to their active stabilization and exceptional maneuvering capabilities. A particular area of interest lies in the creation of modular self-balancing robots designed for seamless reconfiguration and enhanced human interaction. …
Pricing The Unknown: An Analysis Of Expected Value Of Young Horses And Price-Determining Factors, Rupasri Sura
Pricing The Unknown: An Analysis Of Expected Value Of Young Horses And Price-Determining Factors, Rupasri Sura
Graduate Theses and Dissertations
From a seller’s point of view in a market, it is crucial to plan the pricing strategies based on perceptions of buyer preferences and their willingness to purchase to ensure market success in selling and pricing. Applying this to the equine industry, this paper studies the factors determining the price of young horses (age ≤ 2 years) in digital auction platforms. Using data from Professional Horse Services, LLC (2012–2023), a Heckman’s two-step approach was employed, which involves a probit model as the first step and a hedonic price model as the second, aiming to correct for sample selection bias in …