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Investigation Of The Flow Field In The Jack Rabbit Ii Mock Urban Environment Field Tests Using A 1:50 Scale Wind Tunnel Model, Paulo Victor De Freitas Lopes
Investigation Of The Flow Field In The Jack Rabbit Ii Mock Urban Environment Field Tests Using A 1:50 Scale Wind Tunnel Model, Paulo Victor De Freitas Lopes
Graduate Theses and Dissertations
Accidental release of toxic chemicals can put workers and nearby populations at significant risk. Consequence assessment of accidents in urban environments is of particular interest. Urban geometries create wind channels between buildings, along with particularly dangerous areas downwind of buildings, where near-stagnant flow is present. Furthermore, recirculation zones can be formed between buildings, trapping high concentrations of toxic gases at ground level, particularly for denser-than-air gases. In 2015, the Department of Homeland Security conducted the Jack Rabbit II Field Test (JR-II) at Dugway Proving Ground, UT. During JR-II, chlorine was released at the center of a Mock Urban Environment (MUE) …
Juvenile Justice System Involvement And The Transition To Early Adulthood: Does Direct Intervention Help Or Harm?, Cameron Miller Perrine
Juvenile Justice System Involvement And The Transition To Early Adulthood: Does Direct Intervention Help Or Harm?, Cameron Miller Perrine
Graduate Theses and Dissertations
The present study examines the effects of the juvenile justice system on youth as they transition to early adulthood. The present study adds to the literature by incorporating comparison groups of youths and by testing multiple explanations of recidivism: Labeling Theory and the Life Course perspective. In total, 267 adults were recruited via online survey and sorted into three groups: Externalizing Behavior and Juvenile Justice Involved, Externalizing Behavior and Not Juvenile Justice Involved, and Not Externalizing and Not Juvenile Justice Involved. In addition to demographics, participants completed measures of past externalizing behaviors, past juvenile justice involvement, social disadvantage, deviant peer …
The Multiverse Argument For The Existence Of God, Michael Dover
The Multiverse Argument For The Existence Of God, Michael Dover
Graduate Theses and Dissertations
The Fine-Tuning Argument for the Existence of God is one of the most powerful arguments in favor of God’s existence. Perhaps the most common objection to this argument involves the Multiverse Theory, which posits an infinite or very large multiverse, adequately explaining the fine-tuning of the universe without positing an intelligent designer. Thus, the Multiverse Theory is often posited as a way of maintaining Atheism. In this paper, I argue that the Atheistic Multiverse View is untenable: if the multiverse exists, God or gods are highly likely to exist as well. Additionally, this paper explores topics like: the conceivability of …
Commonalities In Evidence-Based Instructional Strategies For Autism Spectrum Disorder And English Language Learners, Kimberly Michelle O'Mara
Commonalities In Evidence-Based Instructional Strategies For Autism Spectrum Disorder And English Language Learners, Kimberly Michelle O'Mara
Graduate Theses and Dissertations
Many English language learners experience life on the Autism spectrum. These students will spend much of their day in the general education setting, and teachers will need effective and proven strategies to support them. The data show that Autism Spectrum Disorder is increasing among all populations (CDC, 2023). Current understandings and influences on these learners will be explored. This review examines evidence-based practices presented by premier sources in the fields of Autism Spectrum Disorder and English language learning, seeking commonalities in strategies. Using the findings from the National Standards Report and the National Clearinghouse for Autism Evidence & Practice cross-referenced …
Examining The Perceived Implications Of Eliminating The Stem Career Cluster In Kansas, Trevor Maiseroulle
Examining The Perceived Implications Of Eliminating The Stem Career Cluster In Kansas, Trevor Maiseroulle
Graduate Theses and Dissertations
Career and technical education (CTE) has been an effort in the United States to help bring quality career preparation programs to secondary schools nationwide, with many career clusters allowing schools to teach various courses. For example, the science, technology, engineering, and mathematics (STEM) career cluster provides interdisciplinary approaches and hands-on activities to help students succeed in postsecondary ventures. One of the integral subjects in STEM education is technology and engineering education (T&EE), which has been synonymous with STEM education for decades. T&EE is a discipline which has been around for over a century, nevertheless it may be confused with CTE. …
A Calvinistic Divine Glory Defense, Stephen Thomas Irby
A Calvinistic Divine Glory Defense, Stephen Thomas Irby
Graduate Theses and Dissertations
Calvinists, because they embrace the view that God ordains whatsoever comes to pass, cannot appeal to libertarian free will while trying to defend theism against the problem of evil. However, they can appeal – and, in fact, some have appealed – to God’s desire to be glorified to account for why He has ordained the evils of our world. This is the divine glory defense, and my dissertation aims to develop a version of it. After spending some time framing my defense in the context of the rest of the literature on the problem of evil, an account is provided …
Team Overall Relationship Quality: Examining Factor Structure And Predictive Precision Among Relationship-Based Team Emergent States, Cody Bradley
Graduate Theses and Dissertations
Given that work teams are defined partly in terms of relationships (e.g., members interact socially, maintain and manage boundaries, exhibit interdependencies; Kozlowski & Bell, 2013), it is not surprising that many work team constructs (e.g., team trust, team cohesion, team satisfaction, and team commitment) focus, to some extent, on capturing the “health” or “quality” of relationships among team members. While these relational team constructs reliably correlate with important outcomes such as team performance (e.g., Breuer et al., 2016; Castaño et al., 2013; Thatcher & Patel, 2011), they tend to be studied in isolation, as if they are entirely separate variables. …
How Systematically Increasing Estimator Variables Affects The Confidence-Accuracy Relationship, Amber M. Giacona
How Systematically Increasing Estimator Variables Affects The Confidence-Accuracy Relationship, Amber M. Giacona
Graduate Theses and Dissertations
Researchers have used signal-detection theory-based approach to show that when police use proper practices with eyewitnesses, highly confident witnesses will be highly accurate even when viewing conditions may be suboptimal (Wixted & Wells, 2017). This is referred to as the pristine conditions hypothesis. There have been multiple, and often contradictory, studies that have investigated the relationship between viewing conditions and memory degradation (Giacona et al., 2021; Grabman et al., 2019; Lockamyeir et al, 2020; Semmler et al., 2018). In the current study, I systematically manipulated five estimator variables (lighting, distance, retention interval, exposure duration, and race) as either suboptimal or …
Hedda Is All Of Us. On Directing Henrik Ibsen’S Hedda Gabler, Laura Catherine Post
Hedda Is All Of Us. On Directing Henrik Ibsen’S Hedda Gabler, Laura Catherine Post
Graduate Theses and Dissertations
This paper aims to document the process of directing Henrik Ibsen’s 1890 play Hedda Gabler at the University of Arkansas in February 2023. The chapters include the script selection process, translation selection process, casting, text analysis, research, design process, rehearsal process, and production evaluation.
The Hidden Role Of Religiosity In Contemporary Public Education In The United States Of America, Marilyn Anderson Rhames
The Hidden Role Of Religiosity In Contemporary Public Education In The United States Of America, Marilyn Anderson Rhames
Graduate Theses and Dissertations
The ‘separation of church and state’ is a fundamental precept of the United States, yet the phrase itself is not written in the Constitution and even Supreme Court justices disagree on how it should be defined. The ambiguity surrounding religious liberty is perhaps most felt in K-12 public education, where the fear of inflicting faith formation on impressionable students has inspired the vision of a secular, God-neutral, government-run school system. As such, federal and state laws dictate that public school educators who coerce students by promoting or inhibiting religious devotion risk losing their jobs. Yet, the reality is that the …
The Influence Of Climate And Landscape On Allocapnia Mohri Distribution In Arkansas, Brianna Leigh Annaratone
The Influence Of Climate And Landscape On Allocapnia Mohri Distribution In Arkansas, Brianna Leigh Annaratone
Graduate Theses and Dissertations
Stoneflies are a globally threatened aquatic insect order. In Arkansas, a diverse group of winter stonefly (Capniidae: Allocapnia) have not been surveyed since the 1980s, likely because species-level identification requires the rarely-collected adult form. Allocapnia mohri, a regional endemic, was previously commonly found in mountainous, intermittent streams from the Ouachita Mountains ecoregion north to the Ozark Highlands, but no species distributional models including land use or climate variables exist to our knowledge. We collected adults from 70 stream reaches from the historic Arkansas range from November to April 2020 and 2021. We modeled distributions using random forest (RF) models populated …
Shedding In The Timber Rattlesnake: Natural Patterns, Endocrinological Underpinnings, Temporal And Energetic Effort, And Integration As A Reptilian Life History Trait, Maxwell D. Carnes-Mason
Shedding In The Timber Rattlesnake: Natural Patterns, Endocrinological Underpinnings, Temporal And Energetic Effort, And Integration As A Reptilian Life History Trait, Maxwell D. Carnes-Mason
Graduate Theses and Dissertations
The semi-frequent replacement of the epidermis (ecdysis) is a characteristic trait of reptiles. Whereas all reptiles regularly engage in some degree of skin shedding, skin morphology in snakes necessitates the synchronous replacement of the entire epidermis and facilitates the subsequent removal of the old layer as a single sheet. To date, the ubiquitous process has garnered little attention from researchers because snakes shed with unpredictable timing and frequency and are exceedingly cryptic during ecdytic cycles; previously impeding detailed physiological or ecological investigations of the process in the clade. Because of the lack of study, ecdysis is often viewed as a …
Evaluation Of Heat Stress And Dietary Amino Acid Density On Nutrient And Energy Partitioning In Broilers, Jean-Remi Teyssier
Evaluation Of Heat Stress And Dietary Amino Acid Density On Nutrient And Energy Partitioning In Broilers, Jean-Remi Teyssier
Graduate Theses and Dissertations
The simultaneous increase in the global demand for animal-based protein products and the rise in temperature associated with global warming pose important challenges to the poultry industry. Heat stress (HS) occurs when an animal’s heat production (HP) surpasses its capacity to dissipate heat into the surrounding environment, ultimately leading to reduced feed intake (FI) and negative impacts on performance. A better understanding of bird responses to elevated temperatures is required to propose effective nutritional strategies that mitigate the adverse effects of HS. Therefore, this dissertation aimed to characterize the nutritional and physiological mechanisms explaining the loss in performance and carcass …
Understanding Peripheral Blood Pressure Signals: A Statistical Learning Approach, Md Abul Hayat
Understanding Peripheral Blood Pressure Signals: A Statistical Learning Approach, Md Abul Hayat
Graduate Theses and Dissertations
Proper estimation of body fluid status for human or animal subjects has always been a challenging problem. Accurate and timely estimate of body fluid can prevent life threatening conditions under trauma and severe dehydration. The main objective of this research is the estimation, classification and detection of dehydration in human and animal subjects using peripheral blood pressure (PBP) signals. Peripheral venous pressure (PVP) and peripheral arterial pressure (PAP) signals have been investigated in this research. Both PVP and PAP signals are PBP signals. A dataset of PVP signals was collected using standard peripheral intravenous catheters from human subjects suffering from …
Beef And Dairy Substitution Effects Associated With Carbon Labeling And An Information Intervention, Sara Gardner Hedgecock
Beef And Dairy Substitution Effects Associated With Carbon Labeling And An Information Intervention, Sara Gardner Hedgecock
Graduate Theses and Dissertations
Understanding consumer perceptions of carbon emissions in agriculture is a critical step to help increase the sustainability of food consumption. According to the Food and Agriculture Organization of the United Nations, 14.5 percent of all global anthropogenic GHG emissions are estimated to be represented by livestock (FAO), and cattle, raised for beef and milk, are the largest animal species responsible for emissions, comprising over 60 percent of the livestock sector’s emissions. This motivates this study’s analysis of beef and dairy milk products and alternatives. To better understand how consumers may substitute meat and milk products when provided with information about …
Presentation Matters: Effects Of Presentation Order Of Personality Feedback And Need For Structure On Participant Response To Feedback, Alita Marie Mobley Tu
Presentation Matters: Effects Of Presentation Order Of Personality Feedback And Need For Structure On Participant Response To Feedback, Alita Marie Mobley Tu
Graduate Theses and Dissertations
Psychological assessment plays a vital role in differential diagnosis, treatment planning, and measurement of treatment effectiveness. Insufficient or ineffective feedback to the client can limit the utility of psychological assessment. Finn and Tonsager (1997) advise that assessment feedback will be best received when the feedback content is ordered to start with information that is most consistent with the client’s existing self-concept to information that is the most discrepant from their self-concept. There is minimal empirical support for this practice recommendation. The current study investigates the relationship between presentation order of personality feedback and participant response to feedback (i.e., feedback evaluations, …
A Pilot Study Of Students’ Ethical Decision Making And Emotional Intelligence, Casandra K. Cox
A Pilot Study Of Students’ Ethical Decision Making And Emotional Intelligence, Casandra K. Cox
Graduate Theses and Dissertations
Demand for ethical leaders in agriculture is high to meet 21st century goals, while ethics course offerings in land-grant institutions are limited. The purpose of this case study was to establish a baseline of current University of Arkansas Bumpers College of Agriculture, Food and Life Science (Bumpers College) agriculture and natural resource program students’ ethical decision making (EDM), as measured by the DIT-2, and emotional intelligence (EI), as measured by STEM-B and STEU-B, determine if EI mean scores predict EDM, and identify relationships between EDM or EI and demographic characteristics or lifespan experiences. An online survey design with probability sampling …
Partial Discharge Mitigation In Power Modules Using An Automation-Driven Design Rule Development Method, Shilpi Mukherjee
Partial Discharge Mitigation In Power Modules Using An Automation-Driven Design Rule Development Method, Shilpi Mukherjee
Graduate Theses and Dissertations
Power modules used for the conversion and conditioning of electrical power for applications like electric vehicles, more-electric aircraft, the power grid, etc., are largely designed manually by engineers. Design automation of power modules is starting to gain recognition as a timely and necessary alternative to intuitive manual design and fabrication. With increasing need for wide bandgap materials that can operate at higher voltages, and the need to make modules more compact, hazards like electrical breakdown are more likely. Partial discharge (PD) is a silent and invisible precursor to electrical breakdown. It is compounded with compaction, creating a potential for electrical …
A Real-Time Anpc Inverter Digital Twin With Integrated Design-For-Trust, Paulo Vitor Do Amaral Custodio
A Real-Time Anpc Inverter Digital Twin With Integrated Design-For-Trust, Paulo Vitor Do Amaral Custodio
Graduate Theses and Dissertations
The demand for renewable energy has increased over the last few years, and so has the demand for greater expectations within the energy market. This increasing trend has been accompanied by more significant usage of internet-connected devices (IoT), leading to critical electrical infrastructure being connected to the internet. Implementing internet connectivity with such devices and systems provides benefits such as improving the system's performance, facilitating irregularity and anomaly mitigation, and providing additional situational awareness for enhanced decision-making. However, enhancing the connected system with IoT introduces a drawback – a greater vulnerability to cyber-attacks. Cyber-attacks targeting critical infrastructure in the electrical …
Non-Physical Abuse In Sports: Organizational Culture’S Role, Ian O'Rourke
Non-Physical Abuse In Sports: Organizational Culture’S Role, Ian O'Rourke
Graduate Theses and Dissertations
The purpose of this study was to explore the perceptions of sport professionals who worked in organizations that tolerated non-physical abuse. This qualitative study used active interviewing and grounded-theory design to guide the data collection and coding efforts. The data identified emerging themes to generate essential theory. The research collected data through interviews with 10 sport professionals. This phenomenological study looked at sport professionals’ experiences who worked at private sport organizations and those that worked within a university athletic department. Interview responses illustrated that all participants experienced comparable treatment and felt similarly to the non-physical abuse taking place. An interesting …
A Comparison Of Intelligent Agent Technology And Traditional Preference Assessment Implementation Methods For Preservice Speech-Language Pathologists, Brenna R. Griffen
A Comparison Of Intelligent Agent Technology And Traditional Preference Assessment Implementation Methods For Preservice Speech-Language Pathologists, Brenna R. Griffen
Graduate Theses and Dissertations
Identifying preferred stimuli is an initial step in many evidence-based educational programs for young children. Preference assessments, such as the Multiple Stimulus Without Replacement (MSWO), provide an empirically validated way of identifying and ranking these stimuli. Traditional methods of training professionals to implement MSWO often require the presence of an expert trainer, involve lengthy instructional time, require additional training to transfer skills into the clinical or classroom setting, and necessitate follow-up training to maintain skills over time. Intelligent agent technology may overcome these challenges by providing professionals with easily accessible, consistent instruction. The purpose of the current study was to …
Modeling & Small Signal Analysis Of Grid Forming Inverter, Kadesh Hepburn
Modeling & Small Signal Analysis Of Grid Forming Inverter, Kadesh Hepburn
Graduate Theses and Dissertations
There is a rising number of inverter-based resources (IBRs) being integrated with distribution systems are becoming a more common occurrence. With integration of IBRs inverters, power utilities are experiencing an increase of number of operations with regards to voltage and frequency support. To maintain grid stability and reliability, IBRs need to provide some of the services currently (or formerly) provided by synchronous generators. Interconnection standards, like the IEEE 1547. 2018 has include requirements for IBRs to have the capability to provide some of these services—such as frequency and voltage support—and the procurement and deployment of the services can be implemented …
Fabrication And Measurement Of Lt-Gaas Photoconductive Antennas And Arrays, Zachary Paul Uttley
Fabrication And Measurement Of Lt-Gaas Photoconductive Antennas And Arrays, Zachary Paul Uttley
Graduate Theses and Dissertations
This thesis presents the fabrication and measurement of LT-GaAs based terahertz (THz) photo conductive antennas (PCAs) and arrays. The LT-GaAs THz PCAs are fabricated to serve as reference devices to new 2D material black phosphorous (BP) based THz PCAs. The LT-GaAs and BP devices have identical metallic electrodes, allowing for a comparison of emitted THz intensity and bandwidth. All PCAs have been measured using an open bench pulsed time-domain spectroscopy (TDS) system with a usable bandwidth from 0.1-4 THz, pumped with a 780nm Ti:Sapphire femtosecond laser. The results have shown LT-GaAs devices outperforming BP devices in signal amplitude and bandwidth …
The Role Of Platform Openness In Complementary Innovation, Jia Wei
The Role Of Platform Openness In Complementary Innovation, Jia Wei
Graduate Theses and Dissertations
The two important roles in a platform ecosystem are platform owners and complementors that cooperate to create value through indirect network effects. To facilitate such cooperation, platforms implement platform openness to provide significant resources for their complementors. Granting complementors access to platform core resources through application programming interfaces enables complementors to access the platform’s core development assets such as built-in software functionalities, data, and the user base. This resource provision is the dominant way for platforms to “open” their platform to complementors. While platform openness has attracted scholarly attention, there is a gap in understanding the role of platform openness …
Racial Disparities In Women’S Imprisonment, Gift Onyinyechi Onwuadiamu
Racial Disparities In Women’S Imprisonment, Gift Onyinyechi Onwuadiamu
Graduate Theses and Dissertations
The total imprisonment rate in the United States, and racial disparity in imprisonment, have decreased substantially since 2008 (Carson, 2020), but research has not examined if disparity in women’s imprisonment rates has also declined, or what accounts for these changes. Guided by prior research and theory, this study examines racial differences in women’s prison admission rates from 2000 to 2019 in 25 states. Analyses examine changes over time, by state, and the effects of social structural characteristics that prior research has shown to be associated with women’s imprisonment disparities. Initial findings indicate that disparity has decreased, substantially, due to both …
Use Of Microorganisms For The Enrichment Of Zn And Se By Using Solid-State Fermentation, Rashmi Rangaswamaiah
Use Of Microorganisms For The Enrichment Of Zn And Se By Using Solid-State Fermentation, Rashmi Rangaswamaiah
Graduate Theses and Dissertations
Zinc (Zn) and selenium (Se) are essential minerals for human health and naturally found in many food sources. However, the risk of Zn and Se deficiency has been recognized in several countries. As most people throughout the world consume rice, grains, and cereals as staple foods in their daily diet, which contain a certain amount of phytic acid (antinutrients), the phytic acid content inhibits mineral absorption (Zn and Se) by the human body. Moreover, the low levels of Zn and Se content found in the crop's soil also reduce the amount of minerals in the food sources. Therefore, it is …
Effects Of Supplemental Trace Minerals As Amino Acid Complexed Or Inorganic Sources For Beef Cattle From Receiving Through Finishing, Robin Ashley Cheek
Effects Of Supplemental Trace Minerals As Amino Acid Complexed Or Inorganic Sources For Beef Cattle From Receiving Through Finishing, Robin Ashley Cheek
Graduate Theses and Dissertations
The objective of experiments was to investigate the effects of inorganic or amino acid-complexed sources of trace minerals on health, gain performance, liver mineral concentrations, and carcass characteristics of beef heifers from receiving through finishing. To investigate the effects of inorganic or amino acid-complexed sources of trace minerals (zinc, copper, manganese, and cobalt) on performance and morbidity of beef heifers during the receiving period, crossbred beef heifer calves arriving on 3 delivery dates were used in a 42-day receiving trial. Treatments consisted of supplemental zinc (360 mg/d), copper (125 mg/d), manganese (200 mg/d), and cobalt (12 mg/d) from complexed (Availa-4, …
Method Development For Quantifying Micropollutants In Water At Trace Levels With Diffusive Gradients In Thin-Films Passive Samplers, Michael Bradford Howland
Method Development For Quantifying Micropollutants In Water At Trace Levels With Diffusive Gradients In Thin-Films Passive Samplers, Michael Bradford Howland
Graduate Theses and Dissertations
The United States (US) Environmental Protection Agency (EPA) issued a proposed National Primary Drinking Water Regulation in March 2023 for six per- and polyfluoroalkyl substances (PFAS), which included maximum contaminant levels (MCLs) of 4.0 ng•L−1 for perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS). These MCLs were based on current method detection limits (MDLs) for aqueous-phase grab samples achievable at certified analytical labs throughout the US. In June 2022, the US EPA issued the interim lifetime health advisory levels for PFOA and PFOS of 0.004 ng•L−1 and 0.02 ng•L−1, respectively, which presently cannot be reliably quantified using existing PFAS methods. …
Death Like Dreaming, Junli Song
Death Like Dreaming, Junli Song
Graduate Theses and Dissertations
This written dissertation accompanies my thesis exhibition, Death Like Dreaming, which took place in Sculpture Gallery in the spring of 2023. This show was the culmination of my MFA at the University of Arkansas and centered around my most recent zhenmushou sculpture. I began making these mythical beings from my mythology in the summer of 2022. This essay will provide theoretical, historical, and personal context to the work, expanding upon my artistic journey and exploration during my degree. I will focus on my conceptual and formal decision making, areas of research, and discuss the world building and personal mythology that …
On The Micro-Mechanical Property Characterization And Bulk-Volume Behavior Prediction Of Additively Manufactured 17-4 Ph Stainless Steels, David González-Niño
On The Micro-Mechanical Property Characterization And Bulk-Volume Behavior Prediction Of Additively Manufactured 17-4 Ph Stainless Steels, David González-Niño
Graduate Theses and Dissertations
Selective laser melting is an additive manufacturing technology that opens the possibility to manufacture components with complex geometries that are difficult with traditional manufacturing techniques which could benefit engineering applications such as aviation or structural engineering. However, the lack of a reliable universal predictive model for selective laser melting components could impede the full implementation in industrial applications. Therefore, this dissertation investigates the mechanical behavior of selective laser melting 17-4 PH stainless steel under ultra-low cycle fatigue regime and propose a novel micro-mechanical based modeling using statistical and representative volume element. The first phase of this project examined the mechanical …