PCBs are synthetic organic compounds known for their toxicity to many organisms and are notorious for having large discrepancies between measured and nominal concentrations. Historically thought to be less toxic, non-dioxin-like (NDL) PCBs represent the majority of congeners and are capable of eliciting neurotoxic effects. NDL-PCBs remain understudied, including their effects on aquatic organisms. In the first study, I collected extensive chemistry data and data on neurobehavioral and cardiac endpoints to test the acute effects of exposure to an NDL-PCB mixture on early life stage zebrafish. Neurobehavioral effects observed in the first study indicated a potential for longer term behavioral effects in these fish. In the second study, I collected data on feeding, social, and memory behavior of zebrafish at time points beyond the acute exposure from the first study. Acute and longer-term behavioral endpoints in the first and second studies demonstrated effects from PCB exposure but did not indicate mechanisms. In the third study, I collected untargeted and targeted metabolomic data on amino acid, sugar, anionic compound, and neurotransmitter profiles to determine the specific pathways affected by exposure to an NDL-PCB mixture. These combined data from these studies provide a unique insight into the chemical profile of an NDL-PCB …

This dissertation research work focuses on the investigation of novel donor-acceptor systems elucidating their photochemical properties, anion binding, and their potential application in the development of artificial photosynthetic systems. The explored systems are based on oxoporphyrinogen (OxPs), porphyrins, fullerene, and boron dipyrromethene (BODIPY) based donor-acceptor systems. The photochemical properties of novel molecular systems were elucidated using UV-vis spectroscopy, fluorescence spectroscopy, electrochemical methods, computational calculations, and ultrafast transient absorption spectroscopy. A novel BODIPY-oxoporphyrinogen dyad which is able to bind with fluoride anion promoting the excited state ultrafast electron and energy transfer events mimicking the primary events in natural photosynthesis was introduced. Further, self-assembly of supramolecular complexes based on oxoporphyrinogens, fullerene, and different zinc porphyrin dimers was explored. The formed self-assembled complexes have shown photoinduced electron transfer. A novel push-pull supramolecular construct based on the spiro-locked N-heterocycle-fused zinc porphyrin was studied. The excited state charge separation and stabilization of this push-pull system was enhanced by the complexation with fluoride anion. Also, the effect of BODIPY functionalization and linkers on the electron transfer properties of a series of carbazole–BODIPY and phenothiazine-BODIPY dyads were investigated. These findings are important to develop advanced and efficient BODIPY-based donor-acceptor systems for efficient light harvesting applications. The entire …

Lesbian, gay, bisexual, transgender, questioning, intersex, and queer (LGBTQIQ) adults are more likely to report experiences of complex trauma, and have detrimental mental health effects as a result, when compared to cisgender, heterosexual adults. However, LGBTQIQ adults have excellent capacity for resilience. In this phenomenological investigation, I explored the lived experiences of resilient LGBTQIQ emerging adults (N = 11) who have histories of complex trauma. Five themes emerged as a result of this study, including (a) abuse and neglect, (b) emotional experiences during and after trauma, (c) connections are essential, (d) getting through hard times, and (e) struggles in the counseling process. The results indicated implications for counselors and counselor educators to better address the experiences of complex trauma and identify resilience in LGBTQIQ emerging adults. Recommendations are provided to counselors and counselor educators for integrating knowledge and actions into their counseling, teaching, and supervision practices, as well as for parents and caregivers, teachers and school personnel, and policymakers.

Corporate environmental social and governance (ESG) reporting is becoming subject to increased scrutiny by regulators, investors and public. This dissertation will contribute to several research streams in the extant literature. This dissertation is the first to show the impact of employee environmental values and attitudes on reporting and whistleblowing decisions, making contributions to accounting, management, whistleblowing and environmental psychology literatures. Next, it is among the first to examine the role of the identity of ESG assurance provider in ESG reporting context. Further, it is among the first to examine the impact of SEC assurance mandate and the value of assurance over ESG information, thus contributing to audit literature. Using experimental methodology, I examine how ESG report assurance, ESG report assurance provider, ESG issue type, and environmentalism as a personality factor influence employee decisions to accede to a supervisory request to misrepresent ESG information, to report management's actions to a corporate hotline, to post information about management wrongdoing on social media, to switch jobs, and to judge ESG misreporting actions as unethical. The results indicate that (1) employee personality factor environmentalism impacts their ESG reporting decisions; (2) pro-environmental employees are more likely to whistleblow when assurance is not mandated, and they …

Goal and incentive alignment are a means of establishing collaborative behavior in supply chains. Essay 1 examines goal and incentive alignment at the strategic level in the purchasing process. It employs survey research in conjunction with structural equation modelling to examine the source selection strategy as a means of aligning the goals of the offeror with those of the buyer. Essay 2 examines goal and incentive alignment at the tactical level. It uses discrete event simulation to explore how the pursuit of localized profit objectives affects the global profitability of a supply chain. Lastly, Essay 3 examines goal and incentive alignment at the operational level. By employing a hybrid simulation approach to model a complex product refurbishment process, this research demonstrates that evaluating subprocesses based solely on their throughput does not equate to greater cost savings for the company at the focal point of this case study. These essays contribute to the body of knowledge in several ways. To the best of the author's knowledge, Essay 1 demonstrates the first empirical linkage, in the realm of public procurement, between the fear of a bid protest and the appropriateness of the sourcing strategy. Similarly, Essay 2 represents the first adaptation of …

The histories of acoustic ecology, field recording, and soundscape composition are intertwined. This combination of disciplines has lead to the potential for powerful insights, but an over-emphasis on music composition using recorded sound has to led to some problematic tendencies in the study of soundscapes. I begin by tracing the development of acoustic ecology and related disciplines, leading to a proposal for a practice of acoustic ecology that centers the study of all sounds from an ecological perspective and incorporates the insights of creative practices. I include the results and data from my acoustic surveys in Patagonia, Iceland, and Texas. These three locations are varied in their climate, and they are all threatened by noise pollution or human interference from one source or another. Each survey plots out the daily sound activity in a given location and then includes information such as decibel level and the amount of anthropogenic noise. Using the field recordings from my acoustic surveys, I composed a non-linear piece, Resonance Ecology, that generates soundscapes by combining sounds from different locations based on connections such as geography or weather patterns. There is also the option for acoustic performers to perform alongside the electronics, creating an unpredictably evolving …

The work is a collection of poems entitled The Sometime Joy, comprising a mix of poems completed before and during my studies at UNT. The manuscript is my second completed full-length work after my first manuscript, the unpublished Night, Translated. The Sometime Joy shares many of the same themes with its predecessor, although stylistically the more recent work hews much more strongly toward the infusion of speculative and fantastical elements (just one example being the apocalyptic poem "Petal Storm"). The speculative components of the collection allow me to express and utilize the full range of my imagination, to use poetry to explore alternate existences and to create allegories, such as the "Market" series of poems, where capitalism is embodied as a chimerical beast that would fit in a horror film. The collection functions as my exploration of the intersections between folklore and pop culture, a series of meditations on the strangeness of human perspectives and how the relation between perceiver and the perceived alloys and transforms both. The collection also delves into horrific subjects varying from serried monsters (wendigos, the capitalist system, J. Edgar Hoover), the apocalypse, and the capacity of mundane humans to be cruel to each other, but …

Principal workloads and demands are steadily increasing while principal health and well-being are declining, resulting in increased rates of principal turnover. Currently, principals are experiencing numerous work-related stressors that are increasing burnout. In many cases, school leaders are sacrificing their families and health to lead their schools. As school success is linked with principal leadership, principal burnout and wellness demands further discussion and investigation. Yet, there is a limited body of research that examines the lived experiences of principals who experience burnout. Consequently, this researcher conducted a phenomenological qualitative study of 12 Texas K-12 elementary and secondary public school principals in central Texas. Findings pointed out that principals experience burnout in waves. While the COVID-19 pandemic greatly impacted the burnout principal experienced, political divisiveness and social media attacks intensified their burnout. Additional findings revealed that burnout can cause principals to question staying in their role and negatively affect the quality of their family relationships as well as their health. Principals coped with their burnout by being aware of their emotions, spending time doing things that brought happiness, exercising, and reverting back to their faith in God. Additionally, principals believed that having knowledgeable district leaders who are visible, trust their leadership, …

This study's first goal is to investigate whether a 23-item multidimensional scale is a valid and reliable measure of benefits private club members perceive to be important. Seven theoretically plausible model structures are empirically tested: a unidimensional model, a two oblique first-order factors model, a four oblique first-order factors model, a two oblique second-order factors model, a bifactor model with two domain-specific factors, a bifactor model with four domain-specific factors, and two oblique bifactor models. The second goal is to examine the benefits members receive most often from their membership clubs. The multidimensional scale is based on four dimensions: member-to-employee relationship, member-to-member relationship, confidence, and reduced anxiety. Member-to-employee relationship and member-to-member relationship subscales are aligned with social benefits while confidence and reduced anxiety subscales are aligned with psychological benefits. The study participants (N = 114) were recruited through a commercial crowdsourcing platform, Prolific. The results of a Bayesian confirmatory factor analysis (BCFA) provided support for the two oblique bifactor models. Additionally, the social benefits and psychological benefits bifactor scales displayed acceptable reliability. A comparison of the means for each type of benefit revealed that no statistically significant differences existed between the general social benefits factor and the general psychological benefits …

The current study is the first repeated-measures design exploring the impact of child-centered play therapy (CCPT), an evidence-based child psychotherapy intervention, on autistic children's social-emotional assets, and emotional and behavioral problems across four times during intervention based on teacher reports. Participants consisted of 19 autistic children recruited from two Title-1 elementary schools in the southwest United States who were aged between 5 years and 8.25 years (M = 6.22, SD = .91), presented with varied levels of cognitive functioning and speech and language abilities. Over 60% of participants were identified by their parents as children of color. Results indicated participants' increased time in CCPT predicted statistically significant improvement in social-emotional assets measured by Social-Emotional Assets and Resilience Scales-Teacher (SEARS-T) total score with a large effect size. Results also indicated participants' increased time in CCPT predicted a statistically significant reduction in emotional and behavioral problems of irritability, social withdrawal, and hyperactivity/ noncompliance, measured by Aberrant Behavior Checklist-Second Edition (ABC- 2), with large effect sizes. Findings of this study revealed substantive changes in social-emotional assets as early as 8 CCPT sessions, and reduction of emotional and behavioral concerns as early as 12 CCPT sessions. Clinical significance, implications for practice, and limitations of …

This dissertation is a thorough examination of the problems modern composers of electronic music face when writing or discussing acousmatic music as derived from Pierre Schaeffer. By taking a close examination of Schaeffer's own writings on the subjects of reduced listening and acousmatic sounds, I illustrate the difficulties and inconsistencies in Schaeffer's philosophy and the problems that his reliance on Husserl's phenomenology creates. Further examination of criticisms of Husserl from Derrida and Heidegger highlight the ways that Schaeffer's phenomenology needs to be updated for the modern acousmatic composer. Articles by modern acousmatic composers such as Adrian Moore, Denis Smalley, Simon Emmerson, and others illustrate how artists have dealt with the problems in Schaeffer's ideas and the inconsistent ways they have applied his principles of sound and the sound object. I argue that a new method of musical meaning as a method of composition and analysis is necessary to resolve these conflicts and inconsistencies. This method is found in the writings of J.L. Austin, and Ludwig Wittgenstein through Andrew Chung, who places significant emphasis on the actions and effects that music takes. By reframing the acousmatic problem through meaning-as-use, I attempt to modernize Schaeffer's conceptions of sound and emphasize the significance …

The purpose of this study is to analyze which behaviors are or are not helpful for debugging when a novice is in a state of unproductive persistence. Further, this project will exploratorily use a variety of analytical techniques -- including association rule mining, process mining, frequent sequence mining, and machine learning-- in order to determine which approaches are useful for data analysis. For the study, programming process data from hundreds of novice programmers were analyzed to determine which behaviors were more or less likely to be correlated with escaping a state of unproductive persistence. Of these events, only three had a statistically significant difference in their rates of occurrence and large effect sizes: file, edit, and compile events. While the data set cannot reveal a user's motivation for a file event, the most logical explanation of these events is that the user is tracing the code. Thus, a higher rate of file events suggests that code tracing (with the goal of code comprehension) is a key behavior correlated with a student's ability to escape a state of unproductive persistence. On the other hand, editing events are far more common in unproductive states that are not escaped. A content analysis suggests …

This dissertation is an investigation and analysis of the contributions of the human organism to climate change, specifically concerned with its adverse effect on the biosphere. The focus of the analysis rests on three phenomena distinctive to humans participating in globalized economies and modernized societies; the distortions of anthrosupremacy, an uncritical development of technology, and an unhealthy cathexis with economic growth. These are analyzed and identified as stark contributors to the creation, proliferation, and pervasiveness of systems contributing to the decline of the biosphere. These phenomena serve to dissociate humans from the consequences of their actions in systemic ways; thereby thriving by preying on the faults of human agency. Using a biogenic framework to analyze human agency, these faults are identified as problematic to the teleological pursuits of the human organism (i.e., extantcy). An analysis of these phenomena in relationship to the faults in human agency is done to create an awareness of how certain mythologies, technologies, and socioeconomic practices have created enabling constraints that deter a more efficacious and sustainable exercise of human agency. Existing strategies and philosophies that have been promoted to address the issue have failed to account for these enabling constraints and, have therefore, fallen short …

Le Rire de Saraï for flute and piano was written in 2001 by Guillaume Connesson. Although the composer's works have been commissioned and performed by numerous leading orchestras and musicians in Europe and the United States, his music is largely neglected by scholars. Despite the increasing popularity of Le Rire de Saraï, the piece also has never received scholarly attention. Therefore, an analytical study of the piece, its influences, and its context in Connesson's output will provide for a deeper understanding and informed performance of this significant element of the flutist's repertoire. Le Rire de Saraï, like much of the composer's music, is notable for the eclecticism of its language and its inspiration from an extramusical source. This study first discusses his biography, inspirational sources, and various musical influences, which provide essential background information to understand his musical world. This document then explores the story of Hagar and Sarah, which serves as the inspiration for the piece and how Connesson draws on the story without crossing into the domain of program music. Finally, the study examines the interactive elements of his eclecticism in the piece, such as French sensibility, American minimalism, Baroque toccata, and popular music.

Carbene ligands over these years have become a heavily utilizes and effective ligand for catalysis. The diamino carbene class of ligands are slightly less understood. The effects of bis(carbene) ligand structures of palladium (II) catalysts were investigated using the ETS-NOCV method. The results showed that the amount of π-backbonding played a major role in the rate of the reaction for these NHC complexes. The amount of pi acceptance from the ligand increased in correlation to the length of the methylene linkage in the ligand back bone resulting in increased catalytic activity. The ETS-NOCV method was used to determine the deformation densities that had a contribution to this interaction based on visual interpretation. The percent contribution of pi interactions provided a linear correlation to the natural log of the initial reaction rate, indicating that π-backbonding plays a crucial role in the overall catalytic activity of the palladium complexes. Gold (I) bis acyclic diamino carbenes (ADCs) were investigated for the possibility to be strong hydrogen bond catalysts. The ligand motif of the gold (I) bisADCs were found to be analogous thiourea compounds. Based on NBO analysis there were some improvements to hydrogen bond donicity in comparison to thioureas with the same functional …

Audit inquiry can be a valuable source of information for auditors, particularly when the client provides useful information about important issues that could affect the audit. Recent studies indicate that the way an audit inquiry is conducted can affect the level of cooperation in the client's response. In this study, I investigate the use of social norms as an intervention auditors could include in their inquiries to increase the likelihood of client cooperation. To test my hypotheses, I conducted a 2x2 between-subjects experiment with 138 MBA and senior accounting students who proxied for non-accounting and accounting managers, respectively. I manipulated the auditor's use of a positive descriptive norm, which informed participants that the desired behavior is typical among similar others. I also manipulated the auditor's use of a negative injunctive norm, which informed participants of social disapproval for not engaging in the desired behavior. The dependent variable was a scaled measure of the likelihood the participant would disclose useful information in their response to the auditor. I find evidence of a main effect for both social norms I test. I do not find evidence of an interaction between the two social norms. My findings contribute to the audit literature as …

Audience costs, which are defined as political costs for a leader generated when the leader fails to follow through on international commitments, are an important concept in international relations to understand the causes of war and peace. However, despite its prominence, evidence for audience costs is mixed at best. In this dissertation, by conducting a series of survey experiments in the United States, I examine a variety of causal mechanisms and observable implications of audience cost models. In Chapter 2 I explore the role of the media. The result of a survey experiment shows that the media's negative framing of a leader's backing down from a threat increases audience costs, but only after subjects are informed of the leader's justification. Chapter 3 tests the idea that the magnitude of audience costs depends on an individual's personality traits. A pilot experiment using a sample of undergraduate students does not support this expectation. Lastly, I compare the credibility of public versus private threats in Chapter 4. A conjoint survey experiment demonstrates that as many proponents of audience cost theory suggest, public threats are perceived as more credible, and the sources of their credibility are domestic audience costs.

The study explores the effectiveness of multimodality teaching using the 4MAT Model. A meta-analysis was conducted with empirical studies on instruction via multimodality teaching in preschool, K-12, and higher education. The studies in the meta-analysis involved an experimental and control group. The control group received traditional teaching lessons, and the experimental group received multimodality teaching. A text analysis was conducted to examine the trends in the advantages of the 4MAT model versus traditional methods. The literature review analyzed the cognitive theory of multimedia learning, advances in multimedia teaching effectiveness assessment, transforming traditional teaching through the 4MAT model, 4MAT model and learning, the importance of multimodality teaching, the origin of multimodality teaching, the 4MAT model, and multimodality teaching and student achievement. This research aimed to determine a better understanding and increase learning achievement by using the 4MAT model versus traditional teaching methods.

John Mayer (1929-2004) was a British Indian composer and violinist. Despite his contributions to bringing Indian music to the West and his large output of works, the majority of his compositions remain largely unknown. This document focuses on Mayer's only oboe concerto, Shanai Awaz, which translates to "Sound of the Shanai" in Hindi. It is representative of his fusion of Indian and Western techniques. The performance guide helps the oboist navigate the fusion elements of the piece. Because no piano reduction of the score was made by the composer, the piece has likely not been performed since 1983. A piano reduction of the score was created as part of this dissertation to make it more accessible to oboists.

Alexander Scriabin (1872-1915) composed primarily for his instrument, the piano. He did, however, compose five major works for orchestra and a piano concerto. Scriabin's last work for orchestra, Prometheus: Poem of Fire, Op. 60 (1910), exemplifies his mature compositional style. The purpose of this dissertation is to contribute a solo transcription of Prometheus to the piano's rich literature in that genre. Furthermore, the dissertation aims to identify and examine the problems encountered in transcribing this work for solo piano and the decision-making that led to musically acceptable solutions. Throughout the process of arrangement, one major question became apparent: What informs the transcription? In turn, this question and its numerous answers served as a guide during the transcription's realization and are the focus of the project.

Béla Bartók's Piano Sonata Sz.80 is known for its integration of modernist language with traditional elements. However, due to Bartók's radical style of writing, it remains challenging to precisely define the piece's motives, voice-leading, and structure, even though pianists who perform it may intuitively comprehend them. Therefore, this study aims to elucidate the Piano Sonata's motivic and tonal structure, genesis and development. First, this study demonstrates Bartók's use of linear motives and progressions to elucidate the Piano Sonata's large-scale structure and demonstrate its internal coherence. Second, by comparing the published score with the facsimile of the Budapest Manuscript, it is possible to shed light on the significance of the changes that Bartók made, facilitating a better understanding of his intentions. Lastly, this study suggests interpretive decisions based on the analysis and manuscripts, thus providing performers with a more thorough understanding of the piece.

The Department of Housing and Urban Development is the primary public agency responsible for providing housing subsidies to low-income households. The Home Choice Voucher Program (HCVP) is currently the most significant housing subsidy. The voucher can be transferred to any location where the landlord is registered with the local housing agency to participate in the program. The mobility of the voucher is designed to decrease concentrations of low-income households in areas that lack economic, educational, and social opportunities. The results of the study found that race and income have a strong negative impact on the percentage of subsidized households and rental units. The findings also show that median area rents have a negative impact on subsidized households, while home values have a negative impact on subsidized rental units. There are more subsidized households and rental units in highly populated with many households living in areas with more transit stops. finally, the data showed that jobs paying under $3,333 per month had a negative impact on the percentage of subsidized housing units. These outcomes can provide insight for HUD and public housing agencies to assist in the utilization of subsidies and encourage more landlord participation to add units to the current …

This research investigates existing and new HR practices that have impacted public health employee retention in Saudi Arabia during the COVID-19 pandemic. It builds on social support theory and social exchange theory to better understand the relationships between HR practices and retention, and uses quantitative methods to examine the hypotheses based on a conceptual framework. While OLS regression is employed to analyze the relationships between HR practices and retention, path analysis (bootstrapping) is used to examine the mediator variable. Based on 417 valid questionnaires distributed to public health employees in Saudi Arabia's central, western, and eastern regions, the analysis illustrates that while training and emphasis on work-life-balance as existing HR practices had a positive effect on retention, social support (supervisory support) and promotion of mental well-being as new HR practices also had a positive effect on retention during the COVID-19 pandemic. However, the hypothesis that compensation and occupational health and safety would improve retention was not supported. These results indicate that financial benefits and providing safety materials did not lead to employee retention. Meanwhile, safety training programs, psychosocial support, and promotion of well-being have been essential HR practices during the pandemic. Regarding the mediation hypotheses, interestingly, the results show that …

This research aims to examine current practices in gifted and talented educator professional learning, as well as teacher attitudes, beliefs, and experiences towards gifted education in order to explore opportunities to further develop and improve professional learning structures. Through a qualitative methodology following the constructivist-interpretivist paradigm, this research utilizes a phenomenological interview design in which data from educator interviews are examined through thematic analysis. To support and further extrapolate on the feedback from the interviews, this research also includes a document analysis of the published descriptions of 30-hour educator training required for those providing GT services in the state of Texas. The thematic analysis of interviews identified three major themes and two minor themes after engaging in a deep analysis of the interview transcriptions. These major themes are the (1) utility of professional learning, (2) shared control of learning, and (3) understanding the whole student. Minor themes are (i) long-term career growth and (ii) role of professional support networks and connections. Results of the document analysis illustrate that the most frequent descriptions are associated with the abilities participants will take from the learning. Within this descriptive code, most of the language focused on learner competence, while few of the descriptions …