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Acute Toxicity of Crude Oil Exposures to Early Life Stage Teleosts: Contribution of Impaired Renal Function and Select Environmental Factors
Oil spills are well-known adverse anthropogenic events, as they can induce severe impacts on the environment and negative economic consequences. Still, much remains to be learned regarding the effects of crude oil exposure to aquatic organisms. The objectives of this dissertation were to fill some of those knowledge gaps by examining the effects of Deepwater Horizon (DWH) crude oil exposure on teleost kidney development and function. To this end, I analyzed how these effects translate into potential osmoregulatory impairments and investigated the interactive effects of ubiquitous natural factors, such as dissolved organic carbon (DOC) and ultraviolet (UV) light, on acute crude oil toxicity. Results demonstrated that acute early life stage (ELS) crude oil exposure induces developmental defects to the primordial kidney in teleost fish (i.e., the pronephros) as evident by alterations in: (1) transcriptional responses of key genes involved in pronephros development and function and (2) alterations in pronephros morphology. Crude oil-exposed zebrafish (Danio rerio) larvae presented defective pronephric function characterized by reduced renal clearance capacity and altered filtration selectivity, factors that likely contributed to the formation of edema. Latent osmoregulatory implications of crude oil exposure during ELS were observed in red drum (Sciaenops ocellatus) larvae, which manifested reduced survival …
Date:
August 2022
Creator:
Bonatesta, Fabrizio
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Advanced Stochastic Signal Processing and Computational Methods: Theories and Applications
Compressed sensing has been proposed as a computationally efficient method to estimate the finite-dimensional signals. The idea is to develop an undersampling operator that can sample the large but finite-dimensional sparse signals with a rate much below the required Nyquist rate. In other words, considering the sparsity level of the signal, the compressed sensing samples the signal with a rate proportional to the amount of information hidden in the signal. In this dissertation, first, we employ compressed sensing for physical layer signal processing of directional millimeter-wave communication. Second, we go through the theoretical aspect of compressed sensing by running a comprehensive theoretical analysis of compressed sensing to address two main unsolved problems, (1) continuous-extension compressed sensing in locally convex space and (2) computing the optimum subspace and its dimension using the idea of equivalent topologies using Köthe sequence. In the first part of this thesis, we employ compressed sensing to address various problems in directional millimeter-wave communication. In particular, we are focusing on stochastic characteristics of the underlying channel to characterize, detect, estimate, and track angular parameters of doubly directional millimeter-wave communication. For this purpose, we employ compressed sensing in combination with other stochastic methods such as Correlation Matrix Distance …
Date:
August 2022
Creator:
Robaei, Mohammadreza
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
"All things at once": A Retrospective Qualitative Examination of the Parental Racial Ethnic Socialization Practices Experienced by Multiracial/Multiethnic Individuals
The purpose of this phenomenological study was to explore how individuals from different multiracial/multiethnic groups experience and process the phenomenon of parental racial ethnic socialization (RES). Critical multiracial race theory, critical race theory, and bioecological systems theory offered a conceptual framework to how RES is often presented and processed. This study was guided by two research questions: (1) What are the experiences of RES among multiracial individuals? and (2) How do multiracial individuals process the parental racial ethnic socialization they were offered? Nine qualitative, one-on-one, semistructured interviews were conducted with individuals from three different multiracial/multiethnic groups. Results revealed that experiences of RES varied along with how participants processed RES. Three subthemes and one theme emerged related to the RES experiences of participants. For some participants lack of conversations were evident in their RES, which meant that conversations surrounding multiraciality and other racialized topics were not present. Other participants disclosed the subtheme of preparedness as part of their RES experience, while others mentioned the importance of environment to their RES experience. Additionally, the theme of changes over time arose, demonstrating how different life events can impact RES experiences. As for how multiracial/multiethnic individuals process RES experiences, the main theme of identity …
Date:
August 2022
Creator:
Camacho Taylor, Jennifer
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
"Allegro de Concert," op. 46, by Frédéric Chopin: A Performance Guide
Frédéric Chopin produced a remarkable body of piano works. Even though most of his works are essential repertoire in piano literature, some of them remain less familiar. One such significant work is the Allegro de Concert in A major, op. 46, which was apparently intended to be the first movement of a third piano concerto. Despite the praise the work has received, it is rarely heard, and references to performance are lacking in the scholarly literature. Some reasons include the substantial technical challenges, such as risky skips, trills in double notes, thick harmonic textures, complex passagework, and the perpetual motion. This study provides a performance guide for the Allegro de Concert, looking at various perspectives of an informed musical performance. The historical backstory of the intended third concerto and a detailed form analysis demonstrate that the work has a combined form, incorporating elements of both concerto and sonata-allegro form. The chapter on performance presents the technical issues and a comparative analysis of various editions and arrangements of this work to inspire musical ideas and suggest appropriate solutions to the musical and technical difficulties.
Date:
August 2022
Creator:
Jeong, Jiyoon
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Assessing Student Perceptions in Short Research Experiences and Course Research Experiences in Undergraduate Biology Laboratories
This study examined students' perception between short research experiences (SRE) courses and full-semester course research experiences (CRE) using the Persistence in the Sciences (PITS) survey and the interview questionnaire. The study also aimed to correlate the influence of student's demographic as a predictive indicator for Project Ownership Scores (POS) and Quantitative Literacy (QL) score means. The three courses studied at the University of North Texas were Biology for Science Majors Laboratory (BIOL 1760 SRE), Microbiology with Tiny Earth (BIOL 2042 Tiny Earth SRE), and Introductory Biology Research Laboratory I (BIOL 1750 SEA-PHAGES CRE). The mean scores for the PITS categories leaned favorably towards the research component of each laboratory course assessed in this study. The interview questionnaire showed 66% of the students in the SRE courses and 90% of the students in the CRE course preferred the research component of the lab. Paired survey demographic analysis for BIOL 1760 SRE showed significance for the Science Community Values with associate/bachelor's degree. BIOL 1750 SEA-PHAGES CRE showed significance in three of the six categories when comparing means for Project Ownership Emotion, Self-Efficacy, and Science Identity with Gender. Binary logistics was used to build a regression model to predict demographics with approximately 65% …
Date:
August 2022
Creator:
Alberts, Arland Dulcey
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Il bel canto russo: Incorporating Principles from the Old Italian School of Singing to Russian Lyric Diction Utilizing the Songs of Mikhail Glinka (1804 -1857)
Mikhail Glinka (1804-1857) is widely recognized as a founding father of Russian classical music, but in fact, his music represents a bridge: it establishes a distinctive Slavic sound built on the Italian roots of Glinka's musical inspiration. As a young man, Glinka traveled abroad, which included three years spent in Italy, where he gained extensive exposure to and familiarity with what modern scholarship refers to as the Old Italian School of Singing. This influence makes his songs an ideal introduction to Russian lyric diction while reinforcing the tenets of sound vocalism. This study explores four Glinka melodies: "Doubt ," "To Molly," "The Lark," and "Cavatina." Previously published only in their original keys, the songs are presented here transposed into keys suitable for a young bass and a young baritone singer, with the melody line placed in the bass clef and corresponding IPA transcriptions beneath the original Cyrillic text. Following both an introduction that contextualizes Glinka as a composer enamored of 19th-century Italian opera and a discussion of technical and stylistic aspects regarding the production of sound in that same era, there is a brief examination of Russian lyric diction intended to inspire further study of this unique and rewarding singing …
Date:
August 2022
Creator:
McGee, Michael Anthony
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Bicultural Identity Integration and Psychological Wellness among Adult Children of Immigrants: Role of Cognitive Flexibility, Affect Regulation, and Adaptive Coping
Guided by the framework of bicultural identity integration (BII), a conceptual model depicting the direct and indirect effects of BII, cognitive flexibility, affect regulation, and coping on psychological wellbeing indicators (i.e., life satisfaction, depression) of adult children of immigrants (ACI) in the U.S. was developed. It was hypothesized that greater BII would contribute to greater cognitive flexibility and affect regulation, which would be associated with more utilization of adaptive coping strategies and greater psychological wellbeing. A total of 240 young ACI from across the U.S. completed the online research questionnaire that measured all variables of interest. Results from structural equation modeling analyses showed adequate model fit with the data. Findings provided support to the indirect effects of BII factors on wellbeing through affect regulation, however, the indirect effect paths are more complicated than what were hypothesized originally. Specifically, higher levels of identity harmony and identity blendedness contributed to more difficulties in emotion regulation, and subsequently, poorer wellbeing. Additionally, both cultural identity harmony and identity blendedness contributed to greater levels of cultural and relational maintenance strategies (i.e., avoidance, forbearance) in the context of intergenerational conflict through affect regulation, but not through cognitive flexibility. Notably, the latent variable of cultural coping strategies …
Date:
August 2022
Creator:
Bismar, Danna
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Bifunctional Enamine‐Metal Lewis Acid Catalysis and α-Enaminones for Cyclization Reactions
The use of enamines continues to be an important tool in organic syntheses as both a catalyst and reactant. The addition of metal catalysts coupled with enamine catalysis has generated many reactions that normally would not occur separately. However, catalysts' incompatibility is an issue that we wish to solve allowing new chemistry to occur without hindrance. The use of enamines has continued to be a well-studied area of organic chemistry, but the field is ripe for different types of enamines to gain the spotlight. Enaminones are enamines with both nucleophilic and electrophilic properties. They allow reactions that are normally not possible with enamines to become obtainable. Chapter 1 is a brief introduction on enamines and the reason they gained so much attention. Then ends with enaminones and what makes them interesting reactants. Chapter 2 described a new synthesis for the tricyclic synthesis of chromanes using a novel bifunctional catalyst system of enamine-metal Lewis acid giving great yields (up to 87 %yield) and excellent stereoselectivity (up to 99 % ee). Chapter 3 covered new reactions for ring-open cyclopropane (up to 94% yield), tetrahydroquinolinones (up to 84% yield) and enantiospecific tetrahydroquinolinones (up to 84% yield and 97% ee) using α-enaminone and donor-acceptor …
Date:
August 2022
Creator:
Davis, Jacqkis
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Black Male Collegiate Football Players' Experiences of Racial Mistreatment and Its Effects: A Qualitative Analysis
Research examining how these athletes, specifically football players, are racially mistreated in revenue sports in Power Five conferences, as well as the effect of this mistreatment on their health and well-being, has been sparse. Thus, the purpose of my study was to examine current Black male college football players' experiences of racial mistreatment within their lives in general, and their collegiate sport experiences in particular, and to learn how these experiences have affected their health and well-being across their academic, athletic, and social spheres of functioning. Through reflexive thematic analysis, I gathered that (a) the athletes believed that football defines and limits them, (b) they felt misunderstood and isolated on campus, (b) they were dehumanized and criminalized, and (d) they were physically and psychologically exhausted from chronic racial mistreatment. Despite the NCAA making positive strides toward addressing mental health concerns within collegiate athletics, there remains a clear need for more support and nourishment regarding the mental health of Black male college athletes, particularly football players. Further results and implications are discussed.
Date:
August 2022
Creator:
Walsh, J. Andy
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Characteristics, Expectations, and Challenges of Non-Traditional Adult First-Generation Students
The purpose of this phenomenological study was to explore the lived experiences of adult first-generation students through their college journey. With a conceptual framework based on student involvement and social and cultural capital theories that contribute to student persistence, retention, and graduation, this study was guided by three research questions: (1) What were the expectations and motivations of adult first-generation students when pursuing postsecondary studies after the age of 25? (2) What were the main challenges experienced by this population during their journey through college? and (3) What strategies did these students use to cope with those challenges? Five first-generation participants who started or resumed their college careers when they were 27, 34, 47, and 50 years old were interviewed in-depth. Results indicated that all participants had to search for their inner strength to pursue higher education studies and required the support of their family and social network to succeed. As a result of their rich lived experiences, these adult first-generation students showed how their strong social and cultural capital enabled them to juggle family and work responsibilities and overcome the challenges of their college experiences.
Date:
August 2022
Creator:
Fleurquin, Fernando
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Chemically Optimized Cu Etch Bath Systems for High-Density Interconnects and the FTIR Operando Exploration of the Nitrogen Reduction Reaction on a Vanadium Oxynitride Electrocatalyst
Printed circuit board manufacturing involves subtractive copper (Cu) etching where fine features are developed with a specific spatial resolution and etch profile of the Cu interconnects. A UV-Vis ATR metrology, to characterize the chemical transitions, has been developed to monitor the state of the bath by an in-situ measurement. This method provides a direct correlation of the Cu etch bath and was able to predict a 35% lower etch rate that was not predicted by the three current monitoring methods (ORP, specific gravity, and conductivity). Application of this UV-Vis ATR probe confirmed that two industrial etch baths, in identical working conditions, confirmed a difference in Cu2+ concentration by the difference of the near IR 860nm peak. The scope of this probe allowed chemically specific monitoring of the Cu etch bath to achieve a successful regeneration for repeated use. Interlayer dielectrics (ILDs) provide mechanical and electrical stability to the 3D electrical interconnects found in IC devices. It is particularly important that the structural support is created properly in the multilayered architecture to prevent the electrical cross signaling in short range distances. A combined multiple internal reflection and transmission FTIR has been employed for the characterization of silicon oxycarbonitride (SiOCN) films. These …
Date:
August 2022
Creator:
Caperton, Joshua M
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Cognitive States while Mind Wandering and Associated Alterations in Time Perception
Time perception is a fundamental aspect of consciousness related to mental health. One cognitive state related to time perception is mind wandering (MW), defined as having thoughts unrelated to the current task. Little research has directly assessed the relationship between these two constructs, despite the overlap in clinical significance and the shared importance of attention for healthy functioning. In the present study, I addressed this by having a sample of 40 adults in the United States complete an online sustained attention to response task remotely while answering thought probes related to thought type and time perception. Multilevel modeling results indicated that cognitive factors were related to the judgements of passage of time (JOPOTs; the feeling that time is passing quickly or slowly) while they had little relation to the estimated duration or the accuracy of those estimations. Specifically, JOPOTs were related to attention to task and emotional valence, and the addition of MW, intentionality, and fixed/dynamic thoughts to the models explained additional variance. Duration estimations and JOPOTs were unrelated to each other, suggesting JOPOTs and duration estimations have different relationships to cognitive factors and should be studied as separate constructs. Additionally, results suggested that the heavy use of dichotomization in …
Date:
August 2022
Creator:
Kelly, Megan Erin
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Common Strategies for Regulating Emotions across the Hierarchical Taxonomy of Psychopathology (HiTOP) Model
The hierarchical taxonomy of psychopathology (HiTOP) is a novel classification system that adopts both a dimensional and hierarchical approach to psychopathology to address shortcomings. However, the HiTOP framework is descriptive in nature and requires additional research to consider potential mechanisms for the onset and maintenance of psychopathology, such as cognitive-behavioral emotion regulation strategies. To redress this gap, a sample of 341 adults who endorsed ongoing mental health concerns completed self-report measures of emotion regulation strategies and psychopathology. The data revealed a three-spectra HiTOP model consisting of internalizing, thought disorder, and antagonistic externalizing. Results found that psychopathology was most strongly associated with avoidance, catastrophizing, expressive suppression, and self-blame. In contrast, adaptive strategies were generally unrelated to the HiTOP spectra. This pattern was strongest for internalizing, distress, and detachment. Fewer, yet noteworthy unique relationships between the strategies and specific spectra/subfactors were also found. These findings suggest that psychopathology may be best conceptualized as an overutilization of maladaptive emotion regulation strategies. Furthermore, the results indicate there is added benefit to considering these strategies within a hierarchical approach to psychopathology. These associations alert clinicians to potential treatment targets and contribute to an ongoing literature that seeks to identify underlying mechanisms of the structure of …
Date:
August 2022
Creator:
Bennett, Charles B.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Comparison of Plaintiff and Defense Expert Witness H-Index Scores in Mild Traumatic Brain Injury Civil Litigation
This study examines the background and qualifications of plaintiff and defense experts using the H-Index score as quantification of expert background and qualifications. The goal is to better understand the similarities and differences among the professionals offering paid expert witness testimony in mild traumatic brain injury (mTBI) civil litigation. In this quantitative study, descriptive statistics include the mean and standard deviation scores for the data to support examining measures of central tendency and variance, respectively. The study includes the use of logistic regression and the Wilcoxon signed-rank test, and their statistical assumptions were tested to determine whether they would be used or if it was more appropriate to use a non-parametric test. The study included two research questions: How do the qualifications of plaintiff and defense expert witnesses in mild traumatic brain injury civil litigation compare? and to what extent does a higher h-index correlate with a favorable litigation outcome in a mild traumatic brain injury case? The findings for the hypothesis tests associated with the research questions led to the acceptance of the null hypothesis in each test. There was a lack of asymptotic significance in Hypothesis 1 and a lack of significance in Hypothesis 2. The findings from …
Date:
August 2022
Creator:
Victor, Elise C
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Computational Investigations of Catalytic Activity by Metal-Containing Complexes
This dissertation delves into the catalytic activity of multiple metal-containing complexes with an emphasis on the activation of C–H bonds in small molecules and olefin oligomerization. The research contained in these works employs computational methodologies to better understand the thermodynamics and kinetics of the reactions. Computations can be used to quickly identify novel models and find ideal substitutions for improved catalyst design. Within this dissertation, multiple molecules of divalent and trivalent main group element-containing complexes as well as Group 13 dimetallene complexes were investigated with density functional theory (DFT) to identify their ability to activate C–H of hydrocarbons, including methane, by quantifying their thermodynamics and kinetics of reaction. With several substitutions to the base complex, improved catalysts were designed to decrease the energy barriers of the activations. Multiconfiguration self-consistent field methods were also employed to characterize the biradical character of these Group 13 compounds. Olefin oligomerization by zirconium boratabenzenes with various ancillary pendant groups was also investigated via DFT to identify the most ideal variations as well as the most likely reaction pathway.
Date:
August 2022
Creator:
Carter, Carly Catherine
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Concerning Millennials: Exploring Generational Cohort Effects on Racial Linked Fate, Religion and Politics, and Support for American Civil Liberities
This research examines the political implications of the Millennial generation on American politics by exploring the interaction of generational cohort with race, social issues, and civil liberties. Relying on the 2016 Collaborative Multiracial Post-Election Survey and the 2018 General Social Survey, I examine (1) Millennial attitudes toward race and ethnicity by looking specifically at racial linked fate, (2) how Millennials interact with race and evangelical Christianity and how this interaction influences social policy preferences, and (3) how generational factors influence Millennial attitudes toward American civil liberties. I find that there are measurable effects of generational cohorts on the predicted value of Linked Fate for racial minority groups in the United States. My results suggest that Millennials are significantly more likely to have higher levels of linked fate for Latino and Asian Americans. However, I do not find sufficient evidence to suggest that African Americans' level of linked fate is affected either positively or negatively for Millennials. Second, for the investigation on social policy, the results suggest that those who sit at the intersection of the three groups- the Latino-Millennial evangelicals- hold policy preferences that contrast from those who are solely either Latino, Millennial, or evangelical. Latino-Millennial evangelicals are significantly more …
Date:
August 2022
Creator:
Molinar, J. Antonio
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Construction of the Fringe Extraterrestrial of Postmodernity
This study focuses on the discourse that orders and creates a logic of the extraterrestrial during postmodernity, what I term "Fringe." Using Foucault's notion of discourse, I define and theorize Fringe and its formation during postmodernity, looking at the particular features of the historical moment post-1960 that contributed to the creation and regulation of a particular extraterrestrial. I then investigate historical conceptions of the extraterrestrial from Aquinas to Kant. This genealogy of the extraterrestrial reveals a rich history of the extraterrestrial and compares this history with Fringe. After this I discuss two precursors of Fringe discourse: the Society for Psychical Research and the writings of anomalous researcher Charles Fort. This investigation of pre-Fringe notions of the psychical in discourse shows how the SPR and Fort's work both created new ways of looking at and speaking about phenomena falling outside the purview of "normal science" and contributed to the formation of Fringe while also being distinguishable from it. Finally, I analyze two popular iterations of Fringe discourse—the ancient aliens hypothesis and the abduction narrative—as popularized in the works of Erich von Däniken and Whitley Strieber.
Date:
August 2022
Creator:
Smith, Andrew
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Content Analysis of the Role of Instagram as a Learning Environment on Health and Fitness
As social media evolves, educators and other professionals have taken advantage of it as a teaching resource. This research focused on exploring the role of Instagram as a learning technology on health and fitness. In this research, there are references to literature that document the impact of social media on health and fitness. This study also highlights several features found on Instagram, Facebook, Twitch, YouTube, and other similar platforms to deliver learning content in real time. Several articles in this dissertation mentioned how social media content can influence the audience and their thoughts on health and fitness. Social media presents the opportunity to access information, impart knowledge as well as other forms of interaction.
Date:
August 2022
Creator:
Atamenwan, Imonitie Osalume
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Continuity of Hausdorff Dimension of Julia Sets of Expansive Polynomials
This dissertation is in the area of complex dynamics, more specifically focused on the iteration of rational functions. Given a well-chosen family of rational functions, parameterized by a complex parameter, we are especially interested in regularity properties of the Hausdorff dimension of Julia sets of these polynomials considered as a function of the parameters. In this dissertation I deal with a family of polynomials of degree at least 3 depending in a holomorphic way on a parameter, focusing on the point where the dynamics and topology of the polynomials drastically change. In such a context proving continuity is quite challenging while real analyticity will most likely break. Our approach will, on the one hand, build on the existing methods of proving continuity of Hausdorff dimension, primarily based on proving continuity, in the weak* topology of measures on the Riemann sphere, of canonical conformal measures, but will also require methods which, up to my best knowledge, have not been implemented anywhere yet. Our main result gives a surprising example where the Hausdorff dimension of the Julia set is continuous in the parameter, but where the Julia set itself is not.
Date:
August 2022
Creator:
Wilson, Timothy Charles
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Cost of Higher Education: Impacts of Student Loan Debt on the Life Course for Hispanic Americans
Student loan debt continues to be an issue in the U.S., with potential long-term effects on loan repayment and potential wealth accumulation. In particular, minorities face barriers in the educational system and accruing wealth. Hispanics occupy a middling position in the U.S. racial hierarchy. Using the National Longitudinal Survey of Youth 1997 geocode data, in this study I examined how Hispanic-White differences in student debt change over time and how student debt influences wealth. In addition, I accounted for immigration status via parents' nativity status to investigate debt burdens and subsequent wealth for these respondents. I used hierarchical linear growth models to examine debt growth over time and linear decomposition to examine Hispanic-White differences in wealth accumulation and the impact of student debt on these differences. While findings were largely statistically insignificant, I found that Hispanics tended to start with less debt than their White counterparts and that student debt initially grew for both groups. However, White respondents pay off their debt more quickly than Hispanics. In addition, I found that the wealth gap between White and Hispanic respondents grew significantly between the ages of 20 and 35. While Hispanics tended to start with less debt, my findings suggest that …
Date:
August 2022
Creator:
Knudsen, Jennifer L
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Cross Validation of the Juror Questionnaire of Values and Viewpoints: Sentencing Decisions and Impression Management in Eligible Capital Jurors
The current dissertation had three primary objectives, categorized into two MTurk studies with capital juror-eligible community members: (a) cross-validate the psychometric properties of the JQVV, (b): explore the role of legal attitudes via the JQVV in mock capital sentencing decisions, and (c): examine the JQVV's ability to detect juror social desirability in capital voir dire. Impressively, Study 1 (N = 552) and Study 2 (N = 313) provided strong and consistent evidence for the JQVV's reliability and construct validity. In the mock juror paradigm, punitive legal attitudes on the JQVV (i.e., Crime-Neg, Convict, and Death-Pos), did not directly affect sentencing decisions, however they indirectly influenced the perception of nearly all other legally relevant variables (e.g., evidence type). For example, participants with more punitive criminal justice attitudes evaluated aggravating evidence more favorably which, in turn, increased death sentence verdicts. Study 1 also underscored the concerningly low levels of comprehension jurors have regarding judicial instructions and other relevant legal knowledge (e.g., the definition of aggravating). In Study 2, the support-life and support-death groups evidenced divergent patterns of social desirability, although support-death participants did not dramatically alter their scores between the genuine and social desirability condition. Additionally, the JQVV Pros-Cyn and Justice-Pos scales …
Date:
August 2022
Creator:
Hartigan, Sara E
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Cyber Risk Management in Supply Chains: Three Essays on Cyber Resilience, Business Continuity, and Information Security
This dissertation provides empirical and theoretical support for the antecedents and consequences of cyber resilience via three essays on cyber resilience. Essay 1 comprises 2 studies using a multi-method empirical research effort to determine whether emphasizing suppliers' implementation and use of business continuity management (S-BCM) is actually beneficial to buyers. In Study 1, data from 150 managers was collected via a survey-based questionnaire to determine whether buyers' adoption of monitoring supplier operational performance (MS-OP) and monitoring S-BCM (MS-BCM) enhances S-BCM implementation and use. Evidence from Study 1 suggests that MS-BCM is more effective than MS-OP. Moreover, the results suggest that while buyer power positively augments the effectiveness of MS-BCM, it actually has a diminishing effect on the effectiveness of MS-OP. Study 2 uses the data of 114 managers from a vignette-based experiment to determine whether S-BCM leads to improved buyer operational and financial performance. Study 2 offers evidence that confirms the positive link between S-BCM and buyer operational and financial performance. The results also suggest that the use of reward power further enhances the association between S-BCM and buyer performance. Using two studies, Essay 2 examines how supply chain power and learning can be related to cyber resilience capability. Study …
Date:
August 2022
Creator:
Sadeghi, J. Kiarash
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Death Awareness and Meaningful Work: Considering Mortality and How It Relates to Individual Perceptions of Work
While some individuals experience their work as meaningful, others, with the same job, do not. The purpose of this dissertation is to answer the following question: Why do different individuals, with the same job, view the meaningfulness of their work in conflicting ways? I draw on terror management theory and generativity theory to answer this question by testing the relationship between death awareness and meaningful work. The bulk of academic work concerning meaningful work focuses on its outcomes and few scholars have explained the antecedents of meaningful work. This study aims to extend empirical work of the relationship between death awareness and meaningful.
Date:
August 2022
Creator:
Varghese, Johnson George
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Deep Learning Optimization and Acceleration
The novelty of this dissertation is the optimization and acceleration of deep neural networks aimed at real-time predictions with minimal energy consumption. It consists of cross-layer optimization, output directed dynamic quantization, and opportunistic near-data computation for deep neural network acceleration. On two datasets (CIFAR-10 and CIFAR-100), the proposed deep neural network optimization and acceleration frameworks are tested using a variety of Convolutional neural networks (e.g., LeNet-5, VGG-16, GoogLeNet, DenseNet, ResNet). Experimental results are promising when compared to other state-of-the-art deep neural network acceleration efforts in the literature.
Date:
August 2022
Creator:
Jiang, Beilei
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library